/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* this file is part of atril, a mate document viewer * * Copyright (C) 2004 Red Hat, Inc * * Atril is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Atril is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #include #include #include #include #include #include #include #include "ev-mapping-list.h" #include "ev-document-forms.h" #include "ev-document-images.h" #include "ev-document-links.h" #include "ev-document-layers.h" #include "ev-document-misc.h" #include "ev-document-text.h" #include "ev-pixbuf-cache.h" #include "ev-page-cache.h" #include "ev-view-marshal.h" #include "ev-document-annotations.h" #include "ev-annotation-window.h" #include "ev-view.h" #include "ev-view-accessible.h" #include "ev-view-private.h" #include "ev-view-type-builtins.h" #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass)) #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW)) #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass)) enum { SIGNAL_SCROLL, SIGNAL_HANDLE_LINK, SIGNAL_EXTERNAL_LINK, SIGNAL_POPUP_MENU, SIGNAL_SELECTION_CHANGED, SIGNAL_SYNC_SOURCE, SIGNAL_ANNOT_ADDED, SIGNAL_ANNOT_REMOVED, SIGNAL_LAYERS_CHANGED, SIGNAL_MOVE_CURSOR, SIGNAL_CURSOR_MOVED, N_SIGNALS }; enum { TARGET_DND_URI, TARGET_DND_TEXT, TARGET_DND_IMAGE }; enum { PROP_0, PROP_IS_LOADING, PROP_HADJUSTMENT, PROP_VADJUSTMENT, PROP_HSCROLL_POLICY, PROP_VSCROLL_POLICY }; static guint signals[N_SIGNALS] = { 0 }; typedef enum { EV_VIEW_FIND_NEXT, EV_VIEW_FIND_PREV } EvViewFindDirection; typedef struct { GtkWidget *widget; /* View coords */ gint x; gint y; /* Document */ guint page; EvRectangle doc_rect; } EvViewChild; #define ZOOM_IN_FACTOR 1.2 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) #define SCROLL_TIME 150 #define EV_STYLE_CLASS_DOCUMENT_PAGE "document-page" #define EV_STYLE_CLASS_INVERTED "inverted" /*** Scrolling ***/ static void view_update_range_and_current_page (EvView *view); static void ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect); /*** Geometry computations ***/ static void compute_border (EvView *view, GtkBorder *border); static void get_page_y_offset (EvView *view, int page, int *y_offset); static void find_page_at_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_offset, gint *y_offset); /*** Hyperrefs ***/ static EvLink * ev_view_get_link_at_location (EvView *view, gdouble x, gdouble y); static char* tip_from_link (EvView *view, EvLink *link); /*** Forms ***/ static EvFormField *ev_view_get_form_field_at_location (EvView *view, gdouble x, gdouble y); /*** Annotations ***/ static EvAnnotation *ev_view_get_annotation_at_location (EvView *view, gdouble x, gdouble y); static void show_annotation_windows (EvView *view, gint page); static void hide_annotation_windows (EvView *view, gint page); /*** GtkWidget implementation ***/ static void ev_view_size_request_continuous_dual_page (EvView *view, GtkRequisition *requisition); static void ev_view_size_request_continuous (EvView *view, GtkRequisition *requisition); static void ev_view_size_request_dual_page (EvView *view, GtkRequisition *requisition); static void ev_view_size_request_single_page (EvView *view, GtkRequisition *requisition); static void ev_view_size_request (GtkWidget *widget, GtkRequisition *requisition); static void ev_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static gboolean ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event); static gboolean ev_view_draw (GtkWidget *widget, cairo_t *cr); static gboolean ev_view_popup_menu (GtkWidget *widget); static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event); static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event); static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event); static gboolean ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing *event); static gboolean ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing *event); static void ev_view_style_updated (GtkWidget *widget); static void ev_view_remove_all (EvView *view); static AtkObject *ev_view_get_accessible (GtkWidget *widget); /*** Drawing ***/ static void highlight_find_results (EvView *view, cairo_t *cr, int page); static void highlight_forward_search_results (EvView *view, cairo_t *cr, int page); static void draw_one_page (EvView *view, gint page, cairo_t *cr, GdkRectangle *page_area, GtkBorder *border, GdkRectangle *expose_area, gboolean *page_ready); static void ev_view_reload_page (EvView *view, gint page, cairo_region_t *region); /*** Callbacks ***/ static void ev_view_change_page (EvView *view, gint new_page); static void job_finished_cb (EvPixbufCache *pixbuf_cache, cairo_region_t *region, EvView *view); static void ev_view_page_changed_cb (EvDocumentModel *model, gint old_page, gint new_page, EvView *view); static void on_adjustment_value_changed (GtkAdjustment *adjustment, EvView *view); /*** GObject ***/ static void ev_view_finalize (GObject *object); static void ev_view_dispose (GObject *object); static void ev_view_class_init (EvViewClass *class); static void ev_view_init (EvView *view); /*** Zoom and sizing ***/ static double zoom_for_size_fit_width (gdouble doc_width, gdouble doc_height, int target_width, int target_height); static double zoom_for_size_fit_height (gdouble doc_width, gdouble doc_height, int target_width, int target_height); static double zoom_for_size_fit_page (gdouble doc_width, gdouble doc_height, int target_width, int target_height); static double zoom_for_size_automatic (GdkScreen *screen, gdouble doc_width, gdouble doc_height, int target_width, int target_height); static void ev_view_zoom_for_size (EvView *view, int width, int height); static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, int width, int height); static void ev_view_zoom_for_size_continuous (EvView *view, int width, int height); static void ev_view_zoom_for_size_dual_page (EvView *view, int width, int height); static void ev_view_zoom_for_size_single_page (EvView *view, int width, int height); static gboolean ev_view_page_fits (EvView *view, GtkOrientation orientation); /*** Cursors ***/ static void ev_view_set_cursor (EvView *view, EvViewCursor new_cursor); static void ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y); /*** Find ***/ static gint ev_view_find_get_n_results (EvView *view, gint page); static EvRectangle *ev_view_find_get_result (EvView *view, gint page, gint result); static void jump_to_find_result (EvView *view); static void jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift); /*** Selection ***/ static void compute_selections (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop); static void extend_selection (EvView *view, GdkPoint *start, GdkPoint *stop); static void clear_selection (EvView *view); static void clear_link_selected (EvView *view); static void selection_free (EvViewSelection *selection); static char* get_selected_text (EvView *ev_view); static void ev_view_primary_get_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data); static void ev_view_primary_clear_cb (GtkClipboard *clipboard, gpointer data); static void ev_view_update_primary_selection (EvView *ev_view); /*** Caret navigation ***/ static void ev_view_check_cursor_blink (EvView *ev_view); G_DEFINE_TYPE_WITH_CODE (EvView, ev_view, GTK_TYPE_CONTAINER, G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL)) /* HeightToPage cache */ #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache" static void ev_view_build_height_to_page_cache (EvView *view, EvHeightToPageCache *cache) { gboolean swap, uniform; int i; double uniform_height, page_height, next_page_height; double saved_height; gdouble u_width, u_height; gint n_pages; EvDocument *document = view->document; swap = (view->rotation == 90 || view->rotation == 270); uniform = ev_document_is_page_size_uniform (document); n_pages = ev_document_get_n_pages (document); g_free (cache->height_to_page); g_free (cache->dual_height_to_page); cache->rotation = view->rotation; cache->dual_even_left = view->dual_even_left; cache->height_to_page = g_new0 (gdouble, n_pages + 1); cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2); if (uniform) ev_document_get_page_size (document, 0, &u_width, &u_height); saved_height = 0; for (i = 0; i <= n_pages; i++) { if (uniform) { uniform_height = swap ? u_width : u_height; cache->height_to_page[i] = i * uniform_height; } else { if (i < n_pages) { gdouble w, h; ev_document_get_page_size (document, i, &w, &h); page_height = swap ? w : h; } else { page_height = 0; } cache->height_to_page[i] = saved_height; saved_height += page_height; } } if (cache->dual_even_left && !uniform) { gdouble w, h; ev_document_get_page_size (document, 0, &w, &h); saved_height = swap ? w : h; } else { saved_height = 0; } for (i = cache->dual_even_left; i < n_pages + 2; i += 2) { if (uniform) { uniform_height = swap ? u_width : u_height; cache->dual_height_to_page[i] = ((i + cache->dual_even_left) / 2) * uniform_height; if (i + 1 < n_pages + 2) cache->dual_height_to_page[i + 1] = ((i + cache->dual_even_left) / 2) * uniform_height; } else { if (i + 1 < n_pages) { gdouble w, h; ev_document_get_page_size (document, i + 1, &w, &h); next_page_height = swap ? w : h; } else { next_page_height = 0; } if (i < n_pages) { gdouble w, h; ev_document_get_page_size (document, i, &w, &h); page_height = swap ? w : h; } else { page_height = 0; } if (i + 1 < n_pages + 2) { cache->dual_height_to_page[i] = saved_height; cache->dual_height_to_page[i + 1] = saved_height; saved_height += MAX(page_height, next_page_height); } else { cache->dual_height_to_page[i] = saved_height; } } } } static void ev_height_to_page_cache_free (EvHeightToPageCache *cache) { if (cache->height_to_page) { g_free (cache->height_to_page); cache->height_to_page = NULL; } if (cache->dual_height_to_page) { g_free (cache->dual_height_to_page); cache->dual_height_to_page = NULL; } g_free (cache); } static EvHeightToPageCache * ev_view_get_height_to_page_cache (EvView *view) { EvHeightToPageCache *cache; if (!view->document) return NULL; cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY); if (!cache) { cache = g_new0 (EvHeightToPageCache, 1); ev_view_build_height_to_page_cache (view, cache); g_object_set_data_full (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY, cache, (GDestroyNotify)ev_height_to_page_cache_free); } return cache; } static void ev_view_get_height_to_page (EvView *view, gint page, gint *height, gint *dual_height) { EvHeightToPageCache *cache = NULL; gdouble h, dh; if (!view->height_to_page_cache) return; cache = view->height_to_page_cache; if (cache->rotation != view->rotation || cache->dual_even_left != view->dual_even_left) { ev_view_build_height_to_page_cache (view, cache); } if (height) { h = cache->height_to_page[page]; *height = (gint)(h * view->scale + 0.5); } if (dual_height) { dh = cache->dual_height_to_page[page]; *dual_height = (gint)(dh * view->scale + 0.5); } } static gint ev_view_get_scrollbar_size (EvView *view, GtkOrientation orientation) { GtkWidget *widget = GTK_WIDGET (view); GtkWidget *sb; GtkWidget *swindow = gtk_widget_get_parent (GTK_WIDGET (view)); GtkAllocation allocation; GtkRequisition req; gint spacing; if (!GTK_IS_SCROLLED_WINDOW (swindow)) return 0; gtk_widget_get_allocation (widget, &allocation); if (orientation == GTK_ORIENTATION_VERTICAL) { if (allocation.height >= view->requisition.height) sb = gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (swindow)); else return 0; } else { if (allocation.width >= view->requisition.width) sb = gtk_scrolled_window_get_hscrollbar (GTK_SCROLLED_WINDOW (swindow)); else return 0; } gtk_widget_style_get (swindow, "scrollbar_spacing", &spacing, NULL); gtk_widget_get_preferred_size (sb, &req, NULL); return (orientation == GTK_ORIENTATION_VERTICAL ? req.width : req.height) + spacing; } static gboolean is_dual_page (EvView *view, gboolean *odd_left_out) { gboolean dual = FALSE; gboolean odd_left = FALSE; switch (view->page_layout) { case EV_PAGE_LAYOUT_AUTOMATIC: { GdkWindow *window; GdkMonitor *monitor; GdkDisplay *display; double scale; double doc_width; double doc_height; GtkAllocation allocation; window = gtk_widget_get_window (GTK_WIDGET (view)); display = gdk_window_get_display (window); monitor = gdk_display_get_monitor_at_window (display, window); scale = ev_document_misc_get_monitor_dpi (monitor) / 72.0; ev_document_get_max_page_size (view->document, &doc_width, &doc_height); gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); /* If the width is ok and the height is pretty close, try to fit it in */ if (ev_document_get_n_pages (view->document) > 1 && doc_width < doc_height && allocation.width > (2 * doc_width * scale) && allocation.height > (doc_height * scale * 0.9)) { odd_left = !view->dual_even_left; dual = TRUE; } } break; case EV_PAGE_LAYOUT_DUAL: odd_left = !view->dual_even_left; dual = TRUE; break; case EV_PAGE_LAYOUT_SINGLE: break; default: g_assert_not_reached (); } if (odd_left_out) *odd_left_out = odd_left; return dual; } static void scroll_to_point (EvView *view, gdouble x, gdouble y, GtkOrientation orientation) { gdouble page_size; gdouble upper, lower; if (orientation == GTK_ORIENTATION_VERTICAL) { page_size = gtk_adjustment_get_page_size (view->vadjustment); upper = gtk_adjustment_get_upper (view->vadjustment); lower = gtk_adjustment_get_lower (view->vadjustment); if (view->continuous) { gtk_adjustment_clamp_page (view->vadjustment, y - view->spacing / 2, y + page_size); } else { gtk_adjustment_set_value (view->vadjustment, CLAMP (y, lower, upper - page_size)); } } else { page_size = gtk_adjustment_get_page_size (view->hadjustment); upper = gtk_adjustment_get_upper (view->hadjustment); lower = gtk_adjustment_get_lower (view->hadjustment); if (is_dual_page (view, NULL)) { gtk_adjustment_clamp_page (view->hadjustment, x, x + page_size); } else { gtk_adjustment_set_value (view->hadjustment, CLAMP (x, lower, upper - page_size)); } } } static void ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation) { gdouble x, y; if (!view->document) return; if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) || (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) { GdkRectangle page_area; GtkBorder border; ev_view_get_page_extents (view, view->current_page, &page_area, &border); x = page_area.x; y = page_area.y; } else { GdkPoint view_point; _ev_view_transform_doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point); x = view_point.x; y = view_point.y; } scroll_to_point (view, x, y, orientation); } static void view_set_adjustment_values (EvView *view, GtkOrientation orientation) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; GtkAllocation allocation; int req_size; int alloc_size; gdouble page_size; gdouble value; gdouble upper; double factor; gint new_value; gdouble zoom_center; gtk_widget_get_allocation (widget, &allocation); if (orientation == GTK_ORIENTATION_HORIZONTAL) { req_size = view->requisition.width; alloc_size = allocation.width; adjustment = view->hadjustment; zoom_center = view->zoom_center_x; } else { req_size = view->requisition.height; alloc_size = allocation.height; adjustment = view->vadjustment; zoom_center = view->zoom_center_y; } if (!adjustment) return; factor = 1.0; value = gtk_adjustment_get_value (adjustment); upper = gtk_adjustment_get_upper (adjustment); page_size = gtk_adjustment_get_page_size (adjustment); if (zoom_center < 0) zoom_center = page_size * 0.5; switch (view->pending_scroll) { case SCROLL_TO_KEEP_POSITION: case SCROLL_TO_FIND_LOCATION: factor = value / upper; break; case SCROLL_TO_PAGE_POSITION: break; case SCROLL_TO_CENTER: factor = (value + zoom_center) / upper; break; } upper = MAX (alloc_size, req_size); page_size = alloc_size; gtk_adjustment_set_page_size (adjustment, page_size); gtk_adjustment_set_step_increment (adjustment, alloc_size * 0.1); gtk_adjustment_set_page_increment (adjustment, alloc_size * 0.9); gtk_adjustment_set_lower (adjustment, 0); gtk_adjustment_set_upper (adjustment, upper); /* * We add 0.5 to the values before to average out our rounding errors. */ switch (view->pending_scroll) { case SCROLL_TO_KEEP_POSITION: case SCROLL_TO_FIND_LOCATION: new_value = CLAMP (upper * factor + 0.5, 0, upper - page_size); gtk_adjustment_set_value (adjustment, (int)new_value); break; case SCROLL_TO_PAGE_POSITION: ev_view_scroll_to_page_position (view, orientation); break; case SCROLL_TO_CENTER: new_value = CLAMP (upper * factor - zoom_center + 0.5, 0, upper - page_size); if (orientation == GTK_ORIENTATION_HORIZONTAL) view->zoom_center_x = -1.0; else view->zoom_center_y = -1.0; gtk_adjustment_set_value (adjustment, (int)new_value); break; } } static void view_update_range_and_current_page (EvView *view) { gint start = view->start_page; gint end = view->end_page; gboolean odd_left; if (ev_document_get_n_pages (view->document) <= 0 || !ev_document_check_dimensions (view->document)) return; if (view->continuous) { GdkRectangle current_area, unused, page_area; GtkBorder border; gboolean found = FALSE; gint area_max = -1, area; gint best_current_page = -1; int i, j = 0; if (!(view->vadjustment && view->hadjustment)) return; current_area.x = gtk_adjustment_get_value (view->hadjustment); current_area.width = gtk_adjustment_get_page_size (view->hadjustment); current_area.y = gtk_adjustment_get_value (view->vadjustment); current_area.height = gtk_adjustment_get_page_size (view->vadjustment); for (i = 0; i < ev_document_get_n_pages (view->document); i++) { ev_view_get_page_extents (view, i, &page_area, &border); if (gdk_rectangle_intersect (¤t_area, &page_area, &unused)) { area = unused.width * unused.height; if (!found) { area_max = area; view->start_page = i; found = TRUE; best_current_page = i; } if (area > area_max) { best_current_page = (area == area_max) ? MIN (i, best_current_page) : i; area_max = area; } view->end_page = i; j = 0; } else if (found && view->current_page <= view->end_page) { if (is_dual_page (view, NULL) && j < 1) { /* In dual mode we stop searching * after two consecutive non-visible pages. */ j++; continue; } break; } } if (view->pending_scroll == SCROLL_TO_KEEP_POSITION) { best_current_page = MAX (best_current_page, view->start_page); if (best_current_page >= 0 && view->current_page != best_current_page) { view->current_page = best_current_page; ev_view_set_loading (view, FALSE); ev_document_model_set_page (view->model, best_current_page); } } } else if (is_dual_page (view, &odd_left)) { if (view->current_page % 2 == !odd_left) { view->start_page = view->current_page; if (view->current_page + 1 < ev_document_get_n_pages (view->document)) view->end_page = view->start_page + 1; else view->end_page = view->start_page; } else { if (view->current_page < 1) view->start_page = view->current_page; else view->start_page = view->current_page - 1; view->end_page = view->current_page; } } else { view->start_page = view->current_page; view->end_page = view->current_page; } if (view->start_page == -1 || view->end_page == -1) return; if (start != view->start_page || end != view->end_page) { gint i; for (i = start; i < view->start_page && start != -1; i++) { hide_annotation_windows (view, i); } for (i = end; i > view->end_page && end != -1; i--) { hide_annotation_windows (view, i); } ev_view_check_cursor_blink (view); } #define PAGE_CACHE_NUMBER 10 ev_page_cache_set_page_range (view->page_cache, MAX(view->start_page - PAGE_CACHE_NUMBER, 0), MIN(view->end_page + PAGE_CACHE_NUMBER, ev_document_get_n_pages (view->document) - 1)); ev_pixbuf_cache_set_page_range (view->pixbuf_cache, MAX(view->start_page - PAGE_CACHE_NUMBER, 0), MIN(view->end_page + PAGE_CACHE_NUMBER, ev_document_get_n_pages (view->document) - 1), view->selection_info.selections); if (view->accessible) ev_view_accessible_set_page_range (EV_VIEW_ACCESSIBLE (view->accessible), view->start_page, view->end_page); if (ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page)) gtk_widget_queue_draw (GTK_WIDGET (view)); } static void set_scroll_adjustment (EvView *view, GtkOrientation orientation, GtkAdjustment *adjustment) { GtkAdjustment **to_set; const gchar *prop_name; if (orientation == GTK_ORIENTATION_HORIZONTAL) { to_set = &view->hadjustment; prop_name = "hadjustment"; } else { to_set = &view->vadjustment; prop_name = "vadjustment"; } if (adjustment && adjustment == *to_set) return; if (*to_set) { g_signal_handlers_disconnect_by_func (*to_set, (gpointer) on_adjustment_value_changed, view); g_object_unref (*to_set); } if (!adjustment) adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0); g_signal_connect (adjustment, "value_changed", G_CALLBACK (on_adjustment_value_changed), view); *to_set = g_object_ref_sink (adjustment); view_set_adjustment_values (view, orientation); g_object_notify (G_OBJECT (view), prop_name); } static void add_scroll_binding_keypad (GtkBindingSet *binding_set, guint keyval, GdkModifierType modifiers, GtkScrollType scroll, GtkOrientation orientation) { guint keypad_keyval = keyval - GDK_KEY_Left + GDK_KEY_KP_Left; gtk_binding_entry_add_signal (binding_set, keyval, modifiers, "scroll", 2, GTK_TYPE_SCROLL_TYPE, scroll, GTK_TYPE_ORIENTATION, orientation); gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers, "scroll", 2, GTK_TYPE_SCROLL_TYPE, scroll, GTK_TYPE_ORIENTATION, orientation); } static gdouble compute_scroll_increment (EvView *view, GtkScrollType scroll) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment = view->vadjustment; cairo_region_t *text_region, *region; GtkAllocation allocation; gint page; GdkRectangle rect; EvRectangle doc_rect; GdkRectangle page_area; GtkBorder border; gdouble fraction = 1.0; if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD) return gtk_adjustment_get_page_size (adjustment); page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page; text_region = ev_page_cache_get_text_mapping (view->page_cache, page); if (!text_region || cairo_region_is_empty (text_region)) return gtk_adjustment_get_page_size (adjustment); gtk_widget_get_allocation (widget, &allocation); ev_view_get_page_extents (view, page, &page_area, &border); rect.x = page_area.x + view->scroll_x; rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : allocation.height - 5); rect.width = page_area.width; rect.height = 1; _ev_view_transform_view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect); /* Convert the doc rectangle into a GdkRectangle */ rect.x = doc_rect.x1; rect.y = doc_rect.y1; rect.width = doc_rect.x2 - doc_rect.x1; rect.height = MAX (1, doc_rect.y2 - doc_rect.y1); region = cairo_region_create_rectangle (&rect); cairo_region_intersect (region, text_region); if (cairo_region_num_rectangles (region)) { EvRenderContext *rc; EvPage *ev_page; cairo_region_t *sel_region; cairo_region_get_rectangle (region, 0, &rect); ev_page = ev_document_get_page (view->document, page); rc = ev_render_context_new (ev_page, view->rotation, view->scale); g_object_unref (ev_page); /* Get the selection region to know the height of the line */ doc_rect.x1 = doc_rect.x2 = rect.x + 0.5; doc_rect.y1 = doc_rect.y2 = rect.y + 0.5; ev_document_doc_mutex_lock (); sel_region = ev_selection_get_selection_region (EV_SELECTION (view->document), rc, EV_SELECTION_STYLE_LINE, &doc_rect); ev_document_doc_mutex_unlock (); g_object_unref (rc); if (cairo_region_num_rectangles (sel_region) > 0) { cairo_region_get_rectangle (sel_region, 0, &rect); fraction = 1 - (rect.height / gtk_adjustment_get_page_size (adjustment)); } cairo_region_destroy (sel_region); } cairo_region_destroy (region); return gtk_adjustment_get_page_size (adjustment) * fraction; } void ev_view_scroll (EvView *view, GtkScrollType scroll, gboolean horizontal) { GtkAdjustment *adjustment; double value, increment; gdouble upper, lower; gdouble page_size; gdouble step_increment; gboolean first_page = FALSE; gboolean last_page = FALSE; if (view->key_binding_handled) return; view->jump_to_find_result = FALSE; if ((!horizontal && ev_view_page_fits (view, GTK_ORIENTATION_VERTICAL)) || (horizontal && ev_view_page_fits (view, GTK_ORIENTATION_HORIZONTAL))) { switch (scroll) { case GTK_SCROLL_PAGE_BACKWARD: case GTK_SCROLL_STEP_BACKWARD: ev_view_previous_page (view); break; case GTK_SCROLL_PAGE_FORWARD: case GTK_SCROLL_STEP_FORWARD: ev_view_next_page (view); break; default: break; } return; } /* Assign values for increment and vertical adjustment */ adjustment = horizontal ? view->hadjustment : view->vadjustment; value = gtk_adjustment_get_value (adjustment); upper = gtk_adjustment_get_upper (adjustment); lower = gtk_adjustment_get_lower (adjustment); page_size = gtk_adjustment_get_page_size (adjustment); step_increment = gtk_adjustment_get_step_increment (adjustment); /* Assign boolean for first and last page */ if (view->current_page == 0) first_page = TRUE; if (view->current_page == ev_document_get_n_pages (view->document) - 1) last_page = TRUE; switch (scroll) { case GTK_SCROLL_PAGE_BACKWARD: /* Do not jump backwards if at the first page */ if (value == lower && first_page) { /* Do nothing */ /* At the top of a page, assign the upper bound limit of previous page */ } else if (value == lower) { value = upper - page_size; ev_view_previous_page (view); /* Jump to the top */ } else { increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD); value = MAX (value - increment, lower); } break; case GTK_SCROLL_PAGE_FORWARD: /* Do not jump forward if at the last page */ if (value == (upper - page_size) && last_page) { /* Do nothing */ /* At the bottom of a page, assign the lower bound limit of next page */ } else if (value == (upper - page_size)) { value = 0; ev_view_next_page (view); /* Jump to the bottom */ } else { increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD); value = MIN (value + increment, upper - page_size); } break; case GTK_SCROLL_STEP_BACKWARD: value -= step_increment; break; case GTK_SCROLL_STEP_FORWARD: value += step_increment; break; case GTK_SCROLL_STEP_DOWN: value -= step_increment / 10; break; case GTK_SCROLL_STEP_UP: value += step_increment / 10; break; default: break; } value = CLAMP (value, lower, upper - page_size); gtk_adjustment_set_value (adjustment, value); } static void ev_view_scroll_internal (EvView *view, GtkScrollType scroll, GtkOrientation orientation) { ev_view_scroll (view, scroll, orientation == GTK_ORIENTATION_HORIZONTAL); } #define MARGIN 5 static void ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; GtkAllocation allocation; gdouble adj_value; int value; view->pending_scroll = SCROLL_TO_FIND_LOCATION; gtk_widget_get_allocation (widget, &allocation); adjustment = view->vadjustment; adj_value = gtk_adjustment_get_value (adjustment); if (rect->y < adj_value) { value = MAX (gtk_adjustment_get_lower (adjustment), rect->y - MARGIN); gtk_adjustment_set_value (view->vadjustment, value); } else if (rect->y + rect->height > adj_value + allocation.height) { value = MIN (gtk_adjustment_get_upper (adjustment), rect->y + rect->height - allocation.height + MARGIN); gtk_adjustment_set_value (view->vadjustment, value); } adjustment = view->hadjustment; adj_value = gtk_adjustment_get_value (adjustment); if (rect->x < adj_value) { value = MAX (gtk_adjustment_get_lower (adjustment), rect->x - MARGIN); gtk_adjustment_set_value (view->hadjustment, value); } else if (rect->x + rect->height > adj_value + allocation.width) { value = MIN (gtk_adjustment_get_upper (adjustment), rect->x + rect->width - allocation.width + MARGIN); gtk_adjustment_set_value (view->hadjustment, value); } } /*** Geometry computations ***/ static void compute_border (EvView *view, GtkBorder *border) { GtkWidget *widget = GTK_WIDGET (view); GtkStyleContext *context = gtk_widget_get_style_context (widget); GtkStateFlags state = gtk_widget_get_state_flags (widget); gtk_style_context_save (context); gtk_style_context_add_class (context, EV_STYLE_CLASS_DOCUMENT_PAGE); gtk_style_context_get_border (context, state, border); gtk_style_context_restore (context); } void _get_page_size_for_scale_and_rotation (EvDocument *document, gint page, gdouble scale, gint rotation, gint *page_width, gint *page_height) { gdouble w, h; gint width, height; ev_document_get_page_size (document, page, &w, &h); width = (gint)(w * scale + 0.5); height = (gint)(h * scale + 0.5); if (page_width) *page_width = (rotation == 0 || rotation == 180) ? width : height; if (page_height) *page_height = (rotation == 0 || rotation == 180) ? height : width; } static void ev_view_get_page_size (EvView *view, gint page, gint *page_width, gint *page_height) { _get_page_size_for_scale_and_rotation (view->document, page, view->scale, view->rotation, page_width, page_height); } static void ev_view_get_max_page_size (EvView *view, gint *max_width, gint *max_height) { double w, h; gint width, height; ev_document_get_max_page_size (view->document, &w, &h); width = (gint)(w * view->scale + 0.5); height = (gint)(h * view->scale + 0.5); if (max_width) *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height; if (max_height) *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width; } static void get_page_y_offset (EvView *view, int page, int *y_offset) { int offset = 0; GtkBorder border; gboolean odd_left; g_return_if_fail (y_offset != NULL); compute_border (view, &border); if (is_dual_page (view, &odd_left)) { ev_view_get_height_to_page (view, page, NULL, &offset); offset += ((page + !odd_left) / 2 + 1) * view->spacing + ((page + !odd_left) / 2 ) * (border.top + border.bottom); } else { ev_view_get_height_to_page (view, page, &offset, NULL); offset += (page + 1) * view->spacing + page * (border.top + border.bottom); } *y_offset = offset; return; } gboolean ev_view_get_page_extents (EvView *view, gint page, GdkRectangle *page_area, GtkBorder *border) { GtkWidget *widget; int width, height; GtkAllocation allocation; widget = GTK_WIDGET (view); gtk_widget_get_allocation (widget, &allocation); /* Get the size of the page */ ev_view_get_page_size (view, page, &width, &height); compute_border (view, border); page_area->width = width + border->left + border->right; page_area->height = height + border->top + border->bottom; if (view->continuous) { gint max_width; gint x, y; gboolean odd_left; ev_view_get_max_page_size (view, &max_width, NULL); max_width = max_width + border->left + border->right; /* Get the location of the bounding box */ if (is_dual_page (view, &odd_left)) { x = view->spacing + ((page % 2 == !odd_left) ? 0 : 1) * (max_width + view->spacing); x = x + MAX (0, allocation.width - (max_width * 2 + view->spacing * 3)) / 2; if (page % 2 == !odd_left) x = x + (max_width - width - border->left - border->right); } else { x = view->spacing; x = x + MAX (0, allocation.width - (width + view->spacing * 2)) / 2; } get_page_y_offset (view, page, &y); page_area->x = x; page_area->y = y; } else { gint x, y; gboolean odd_left; if (is_dual_page (view, &odd_left)) { gint width_2, height_2; gint max_width = width; gint max_height = height; GtkBorder overall_border; gint other_page; other_page = (page % 2 == !odd_left) ? page + 1: page - 1; /* First, we get the bounding box of the two pages */ if (other_page < ev_document_get_n_pages (view->document) && (0 <= other_page)) { ev_view_get_page_size (view, other_page, &width_2, &height_2); if (width_2 > width) max_width = width_2; if (height_2 > height) max_height = height_2; } compute_border (view, &overall_border); /* Find the offsets */ x = view->spacing; y = view->spacing; /* Adjust for being the left or right page */ if (page % 2 == !odd_left) x = x + max_width - width; else x = x + (max_width + overall_border.left + overall_border.right) + view->spacing; y = y + (max_height - height)/2; /* Adjust for extra allocation */ x = x + MAX (0, allocation.width - ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2; y = y + MAX (0, allocation.height - (height + view->spacing * 2))/2; } else { x = view->spacing; y = view->spacing; /* Adjust for extra allocation */ x = x + MAX (0, allocation.width - (width + border->left + border->right + view->spacing * 2))/2; y = y + MAX (0, allocation.height - (height + border->top + border->bottom + view->spacing * 2))/2; } page_area->x = x; page_area->y = y; } return TRUE; } static void get_doc_page_size (EvView *view, gint page, gdouble *width, gdouble *height) { double w, h; ev_document_get_page_size (view->document, page, &w, &h); if (view->rotation == 0 || view->rotation == 180) { if (width) *width = w; if (height) *height = h; } else { if (width) *width = h; if (height) *height = w; } } void _ev_view_transform_view_point_to_doc_point (EvView *view, GdkPoint *view_point, GdkRectangle *page_area, double *doc_point_x, double *doc_point_y) { *doc_point_x = (double) (view_point->x - page_area->x) / view->scale; *doc_point_y = (double) (view_point->y - page_area->y) / view->scale; } void _ev_view_transform_view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *page_area, EvRectangle *doc_rect) { doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale; doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale; doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale; doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale; } void _ev_view_transform_doc_point_to_view_point (EvView *view, int page, EvPoint *doc_point, GdkPoint *view_point) { GdkRectangle page_area; GtkBorder border; double x, y, view_x, view_y; gdouble width, height; get_doc_page_size (view, page, &width, &height); if (view->rotation == 0) { x = doc_point->x; y = doc_point->y; } else if (view->rotation == 90) { x = width - doc_point->y; y = doc_point->x; } else if (view->rotation == 180) { x = width - doc_point->x; y = height - doc_point->y; } else if (view->rotation == 270) { x = doc_point->y; y = height - doc_point->x; } else { g_assert_not_reached (); } ev_view_get_page_extents (view, page, &page_area, &border); view_x = CLAMP (x * view->scale, 0, page_area.width); view_y = CLAMP (y * view->scale, 0, page_area.height); view_point->x = view_x + page_area.x; view_point->y = view_y + page_area.y; } void _ev_view_transform_doc_rect_to_view_rect (EvView *view, int page, EvRectangle *doc_rect, GdkRectangle *view_rect) { GdkRectangle page_area; GtkBorder border; double x, y, w, h; gdouble width, height; get_doc_page_size (view, page, &width, &height); if (view->rotation == 0) { x = doc_rect->x1; y = doc_rect->y1; w = doc_rect->x2 - doc_rect->x1; h = doc_rect->y2 - doc_rect->y1; } else if (view->rotation == 90) { x = width - doc_rect->y2; y = doc_rect->x1; w = doc_rect->y2 - doc_rect->y1; h = doc_rect->x2 - doc_rect->x1; } else if (view->rotation == 180) { x = width - doc_rect->x2; y = height - doc_rect->y2; w = doc_rect->x2 - doc_rect->x1; h = doc_rect->y2 - doc_rect->y1; } else if (view->rotation == 270) { x = doc_rect->y1; y = height - doc_rect->x2; w = doc_rect->y2 - doc_rect->y1; h = doc_rect->x2 - doc_rect->x1; } else { g_assert_not_reached (); } ev_view_get_page_extents (view, page, &page_area, &border); view_rect->x = x * view->scale + page_area.x; view_rect->y = y * view->scale + page_area.y; view_rect->width = w * view->scale; view_rect->height = h * view->scale; } static void find_page_at_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_offset, gint *y_offset) { int i; if (view->document == NULL) return; g_assert (page); g_assert (x_offset); g_assert (y_offset); for (i = view->start_page; i >= 0 && i <= view->end_page; i++) { GdkRectangle page_area; GtkBorder border; if (! ev_view_get_page_extents (view, i, &page_area, &border)) continue; if ((x >= page_area.x + border.left) && (x < page_area.x + page_area.width - border.right) && (y >= page_area.y + border.top) && (y < page_area.y + page_area.height - border.bottom)) { *page = i; *x_offset = x - (page_area.x + border.left); *y_offset = y - (page_area.y + border.top); return; } } *page = -1; } static gboolean location_in_text (EvView *view, gdouble x, gdouble y) { cairo_region_t *region; gint page = -1; gint x_offset = 0, y_offset = 0; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); if (page == -1) return FALSE; region = ev_page_cache_get_text_mapping (view->page_cache, page); if (region) return cairo_region_contains_point (region, x_offset / view->scale, y_offset / view->scale); else return FALSE; } static gboolean location_in_selected_text (EvView *view, gdouble x, gdouble y) { cairo_region_t *region; gint page = -1; gint x_offset = 0, y_offset = 0; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); if (page == -1) return FALSE; region = ev_pixbuf_cache_get_selection_region (view->pixbuf_cache, page, view->scale); if (region) return cairo_region_contains_point (region, x_offset, y_offset); else return FALSE; } static gboolean get_doc_point_from_offset (EvView *view, gint page, gint x_offset, gint y_offset, gint *x_new, gint *y_new) { gdouble width, height; double x, y; get_doc_page_size (view, page, &width, &height); x_offset = x_offset / view->scale; y_offset = y_offset / view->scale; if (view->rotation == 0) { x = x_offset; y = y_offset; } else if (view->rotation == 90) { x = y_offset; y = width - x_offset; } else if (view->rotation == 180) { x = width - x_offset; y = height - y_offset; } else if (view->rotation == 270) { x = height - y_offset; y = x_offset; } else { g_assert_not_reached (); } *x_new = x; *y_new = y; return TRUE; } static gboolean get_doc_point_from_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_new, gint *y_new) { gint x_offset = 0, y_offset = 0; x += view->scroll_x; y += view->scroll_y; find_page_at_location (view, x, y, page, &x_offset, &y_offset); if (*page == -1) return FALSE; return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new); } static void ev_view_get_area_from_mapping (EvView *view, guint page, EvMappingList *mapping_list, gconstpointer data, GdkRectangle *area) { EvMapping *mapping; mapping = ev_mapping_list_find (mapping_list, data); _ev_view_transform_doc_rect_to_view_rect (view, page, &mapping->area, area); area->x -= view->scroll_x; area->y -= view->scroll_y; } static void ev_view_put (EvView *view, GtkWidget *child_widget, gint x, gint y, guint page, EvRectangle *doc_rect) { EvViewChild *child; child = g_slice_new (EvViewChild); child->widget = child_widget; child->x = x; child->y = y; child->page = page; child->doc_rect = *doc_rect; gtk_widget_set_parent (child_widget, GTK_WIDGET (view)); view->children = g_list_append (view->children, child); } static void ev_view_put_to_doc_rect (EvView *view, GtkWidget *child_widget, guint page, EvRectangle *doc_rect) { GdkRectangle area; _ev_view_transform_doc_rect_to_view_rect (view, page, doc_rect, &area); area.x -= view->scroll_x; area.y -= view->scroll_y; ev_view_put (view, child_widget, area.x, area.y, page, doc_rect); } /*** Hyperref ***/ static EvMapping * get_link_mapping_at_location (EvView *view, gdouble x, gdouble y, gint *page) { gint x_new = 0, y_new = 0; EvMappingList *link_mapping; if (!EV_IS_DOCUMENT_LINKS (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, page, &x_new, &y_new)) return NULL; link_mapping = ev_page_cache_get_link_mapping (view->page_cache, *page); if (link_mapping) return ev_mapping_list_get (link_mapping, x_new, y_new); return NULL; } static EvLink * ev_view_get_link_at_location (EvView *view, gdouble x, gdouble y) { EvMapping *mapping; gint page; mapping = get_link_mapping_at_location (view, x, y, &page); return mapping ? mapping->data : NULL; } static void goto_fitr_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gdouble zoom, left, top; gboolean change_left, change_top; GtkAllocation allocation; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); left = ev_link_dest_get_left (dest, &change_left); top = ev_link_dest_get_top (dest, &change_top); zoom = zoom_for_size_fit_page (ev_link_dest_get_right (dest) - left, ev_link_dest_get_bottom (dest) - top, allocation.width, allocation.height); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); ev_document_model_set_scale (view->model, zoom); doc_point.x = change_left ? left : 0; doc_point.y = change_top ? top : 0; view->pending_point = doc_point; ev_view_change_page (view, ev_link_dest_get_page (dest)); } static void goto_fitv_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gdouble doc_width, doc_height; gint page; double zoom, left; gboolean change_left; GtkAllocation allocation; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); page = ev_link_dest_get_page (dest); ev_document_get_page_size (view->document, page, &doc_width, &doc_height); left = ev_link_dest_get_left (dest, &change_left); doc_point.x = change_left ? left : 0; doc_point.y = 0; zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height, allocation.width, allocation.height); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); ev_document_model_set_scale (view->model, zoom); view->pending_point = doc_point; ev_view_change_page (view, page); } static void goto_fith_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gdouble doc_width, doc_height; gint page; gdouble zoom, top; gboolean change_top; GtkAllocation allocation; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); page = ev_link_dest_get_page (dest); ev_document_get_page_size (view->document, page, &doc_width, &doc_height); top = ev_link_dest_get_top (dest, &change_top); doc_point.x = 0; doc_point.y = change_top ? top : 0; zoom = zoom_for_size_fit_width (doc_width, top, allocation.width, allocation.height); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH); ev_document_model_set_scale (view->model, zoom); view->pending_point = doc_point; ev_view_change_page (view, page); } static void goto_fit_dest (EvView *view, EvLinkDest *dest) { double zoom; gdouble doc_width, doc_height; int page; GtkAllocation allocation; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); page = ev_link_dest_get_page (dest); ev_document_get_page_size (view->document, page, &doc_width, &doc_height); zoom = zoom_for_size_fit_page (doc_width, doc_height, allocation.width, allocation.height); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_PAGE); ev_document_model_set_scale (view->model, zoom); ev_view_change_page (view, page); } static void goto_xyz_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gint page; gdouble zoom, left, top; gboolean change_zoom, change_left, change_top; zoom = ev_link_dest_get_zoom (dest, &change_zoom); page = ev_link_dest_get_page (dest); if (change_zoom && zoom > 1) { ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); ev_document_model_set_scale (view->model, zoom); } left = ev_link_dest_get_left (dest, &change_left); top = ev_link_dest_get_top (dest, &change_top); doc_point.x = change_left ? left : 0; doc_point.y = change_top ? top : 0; view->pending_point = doc_point; ev_view_change_page (view, page); } static void goto_dest (EvView *view, EvLinkDest *dest) { EvLinkDestType type; int page, n_pages, current_page; page = ev_link_dest_get_page (dest); n_pages = ev_document_get_n_pages (view->document); if (page < 0 || page >= n_pages) return; current_page = view->current_page; type = ev_link_dest_get_dest_type (dest); switch (type) { case EV_LINK_DEST_TYPE_PAGE: ev_document_model_set_page (view->model, page); break; case EV_LINK_DEST_TYPE_FIT: goto_fit_dest (view, dest); break; case EV_LINK_DEST_TYPE_FITH: goto_fith_dest (view, dest); break; case EV_LINK_DEST_TYPE_FITV: goto_fitv_dest (view, dest); break; case EV_LINK_DEST_TYPE_FITR: goto_fitr_dest (view, dest); break; case EV_LINK_DEST_TYPE_XYZ: goto_xyz_dest (view, dest); break; case EV_LINK_DEST_TYPE_PAGE_LABEL: ev_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest)); break; default: g_assert_not_reached (); } if (current_page != view->current_page) ev_document_model_set_page (view->model, view->current_page); } static void ev_view_goto_dest (EvView *view, EvLinkDest *dest) { EvLinkDestType type; type = ev_link_dest_get_dest_type (dest); if (type == EV_LINK_DEST_TYPE_NAMED) { EvLinkDest *dest2; const gchar *named_dest; named_dest = ev_link_dest_get_named_dest (dest); dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document), named_dest); if (dest2) { goto_dest (view, dest2); g_object_unref (dest2); } return; } goto_dest (view, dest); } void ev_view_handle_link (EvView *view, EvLink *link) { EvLinkAction *action = NULL; EvLinkActionType type; action = ev_link_get_action (link); if (!action) return; type = ev_link_action_get_action_type (action); switch (type) { case EV_LINK_ACTION_TYPE_GOTO_DEST: { EvLinkDest *dest; g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link); dest = ev_link_action_get_dest (action); ev_view_goto_dest (view, dest); } break; case EV_LINK_ACTION_TYPE_LAYERS_STATE: { GList *show, *hide, *toggle; GList *l; EvDocumentLayers *document_layers; document_layers = EV_DOCUMENT_LAYERS (view->document); show = ev_link_action_get_show_list (action); for (l = show; l; l = g_list_next (l)) { ev_document_layers_show_layer (document_layers, EV_LAYER (l->data)); } hide = ev_link_action_get_hide_list (action); for (l = hide; l; l = g_list_next (l)) { ev_document_layers_hide_layer (document_layers, EV_LAYER (l->data)); } toggle = ev_link_action_get_toggle_list (action); for (l = toggle; l; l = g_list_next (l)) { EvLayer *layer = EV_LAYER (l->data); if (ev_document_layers_layer_is_visible (document_layers, layer)) { ev_document_layers_hide_layer (document_layers, layer); } else { ev_document_layers_show_layer (document_layers, layer); } } g_signal_emit (view, signals[SIGNAL_LAYERS_CHANGED], 0); ev_view_reload_page (view, view->current_page, NULL); } break; case EV_LINK_ACTION_TYPE_GOTO_REMOTE: case EV_LINK_ACTION_TYPE_EXTERNAL_URI: case EV_LINK_ACTION_TYPE_LAUNCH: case EV_LINK_ACTION_TYPE_NAMED: g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action); break; } } static char * tip_from_action_named (EvLinkAction *action) { const gchar *name = ev_link_action_get_name (action); if (g_ascii_strcasecmp (name, "FirstPage") == 0) { return g_strdup (_("Go to first page")); } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) { return g_strdup (_("Go to previous page")); } else if (g_ascii_strcasecmp (name, "NextPage") == 0) { return g_strdup (_("Go to next page")); } else if (g_ascii_strcasecmp (name, "LastPage") == 0) { return g_strdup (_("Go to last page")); } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) { return g_strdup (_("Go to page")); } else if (g_ascii_strcasecmp (name, "Find") == 0) { return g_strdup (_("Find")); } return NULL; } static char * tip_from_link (EvView *view, EvLink *link) { EvLinkAction *action; EvLinkActionType type; char *msg = NULL; char *page_label; const char *title; action = ev_link_get_action (link); title = ev_link_get_title (link); if (!action) return title ? g_strdup (title) : NULL; type = ev_link_action_get_action_type (action); switch (type) { case EV_LINK_ACTION_TYPE_GOTO_DEST: page_label = ev_document_links_get_dest_page_label (EV_DOCUMENT_LINKS (view->document), ev_link_action_get_dest (action)); if (page_label) { msg = g_strdup_printf (_("Go to page %s"), page_label); g_free (page_label); } break; case EV_LINK_ACTION_TYPE_GOTO_REMOTE: if (title) { msg = g_strdup_printf (_("Go to %s on file “%s”"), title, ev_link_action_get_filename (action)); } else { msg = g_strdup_printf (_("Go to file “%s”"), ev_link_action_get_filename (action)); } break; case EV_LINK_ACTION_TYPE_EXTERNAL_URI: msg = g_strdup (ev_link_action_get_uri (action)); break; case EV_LINK_ACTION_TYPE_LAUNCH: msg = g_strdup_printf (_("Launch %s"), ev_link_action_get_filename (action)); break; case EV_LINK_ACTION_TYPE_NAMED: msg = tip_from_action_named (action); break; default: if (title) msg = g_strdup (title); break; } return msg; } static void ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y) { EvLink *link; EvFormField *field; EvAnnotation *annot = NULL; if (view->cursor == EV_VIEW_CURSOR_HIDDEN) return; if (view->adding_annot) { if (view->cursor != EV_VIEW_CURSOR_ADD) ev_view_set_cursor (view, EV_VIEW_CURSOR_ADD); return; } if (view->drag_info.in_drag) { if (view->cursor != EV_VIEW_CURSOR_DRAG) ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); return; } if (view->scroll_info.autoscrolling) { if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL) ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL); return; } link = ev_view_get_link_at_location (view, x, y); if (link) { ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); } else if ((field = ev_view_get_form_field_at_location (view, x, y))) { if (field->is_read_only) { if (view->cursor == EV_VIEW_CURSOR_LINK || view->cursor == EV_VIEW_CURSOR_IBEAM || view->cursor == EV_VIEW_CURSOR_DRAG) ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } else if (EV_IS_FORM_FIELD_TEXT (field)) { ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); } else { ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); } } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) { ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) { ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); } else { if (view->cursor == EV_VIEW_CURSOR_LINK || view->cursor == EV_VIEW_CURSOR_IBEAM || view->cursor == EV_VIEW_CURSOR_DRAG || view->cursor == EV_VIEW_CURSOR_AUTOSCROLL || view->cursor == EV_VIEW_CURSOR_ADD) ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } if (link || annot) g_object_set (view, "has-tooltip", TRUE, NULL); } /*** Images ***/ static EvImage * ev_view_get_image_at_location (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_new = 0, y_new = 0; EvMappingList *image_mapping; if (!EV_IS_DOCUMENT_IMAGES (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new)) return NULL; image_mapping = ev_page_cache_get_image_mapping (view->page_cache, page); if (image_mapping) return ev_mapping_list_get_data (image_mapping, x_new, y_new); else return NULL; } /*** Focus ***/ static gboolean ev_view_get_focused_area (EvView *view, GdkRectangle *area) { if (!view->focused_element) return FALSE; _ev_view_transform_doc_rect_to_view_rect (view, view->focused_element_page, &view->focused_element->area, area); area->x -= view->scroll_x + 1; area->y -= view->scroll_y + 1; area->width += 1; area->height += 1; return TRUE; } void _ev_view_set_focused_element (EvView *view, EvMapping *element_mapping, gint page) { GdkRectangle view_rect; cairo_region_t *region = NULL; if (view->focused_element == element_mapping) return; if (ev_view_get_focused_area (view, &view_rect)) region = cairo_region_create_rectangle (&view_rect); view->focused_element = element_mapping; view->focused_element_page = page; if (ev_view_get_focused_area (view, &view_rect)) { if (!region) region = cairo_region_create_rectangle (&view_rect); else cairo_region_union_rectangle (region, &view_rect); ev_document_model_set_page (view->model, page); view_rect.x += view->scroll_x; view_rect.y += view->scroll_y; ensure_rectangle_is_visible (view, &view_rect); } if (region) { gdk_window_invalidate_region (gtk_widget_get_window (GTK_WIDGET (view)), region, TRUE); cairo_region_destroy (region); } } /*** Forms ***/ static EvMapping * get_form_field_mapping_at_location (EvView *view, gdouble x, gdouble y, gint *page) { gint x_new = 0, y_new = 0; EvMappingList *forms_mapping; if (!EV_IS_DOCUMENT_FORMS (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, page, &x_new, &y_new)) return NULL; forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, *page); if (forms_mapping) return ev_mapping_list_get (forms_mapping, x_new, y_new); return NULL; } static EvFormField * ev_view_get_form_field_at_location (EvView *view, gdouble x, gdouble y) { EvMapping *field_mapping; gint page; field_mapping = get_form_field_mapping_at_location (view, x, y, &page); return field_mapping ? field_mapping->data : NULL; } static cairo_region_t * ev_view_form_field_get_region (EvView *view, EvFormField *field) { GdkRectangle view_area; EvMappingList *forms_mapping; forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, field->page->index); ev_view_get_area_from_mapping (view, field->page->index, forms_mapping, field, &view_area); return cairo_region_create_rectangle (&view_area); } static gboolean ev_view_forms_remove_widgets (EvView *view) { ev_view_remove_all (view); return FALSE; } static void ev_view_form_field_destroy (GtkWidget *widget, EvView *view) { g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view); } static void ev_view_form_field_button_toggle (EvView *view, EvFormField *field) { EvMappingList *forms_mapping; cairo_region_t *region; gboolean state; GList *l; EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field); if (field_button->type == EV_FORM_FIELD_BUTTON_PUSH) return; state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document), field); /* FIXME: it actually depends on NoToggleToOff flags */ if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO && state && field_button->state) return; region = ev_view_form_field_get_region (view, field); /* For radio buttons and checkbox buttons that are in a set * we need to update also the region for the current selected item */ forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, field->page->index); for (l = ev_mapping_list_get_list (forms_mapping); l; l = g_list_next (l)) { EvFormField *button = ((EvMapping *)(l->data))->data; cairo_region_t *button_region; if (button->id == field->id) continue; /* FIXME: only buttons in the same group should be updated */ if (!EV_IS_FORM_FIELD_BUTTON (button) || EV_FORM_FIELD_BUTTON (button)->type != field_button->type || EV_FORM_FIELD_BUTTON (button)->state != TRUE) continue; button_region = ev_view_form_field_get_region (view, button); cairo_region_union (region, button_region); cairo_region_destroy (button_region); } /* Update state */ ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document), field, !state); field_button->state = !state; ev_view_reload_page (view, field->page->index, region); cairo_region_destroy (region); } static GtkWidget * ev_view_form_field_button_create_widget (EvView *view, EvFormField *field) { EvMappingList *form_mapping; EvMapping *mapping; form_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, field->page->index); mapping = ev_mapping_list_find (form_mapping, field); _ev_view_set_focused_element (view, mapping, field->page->index); return NULL; } static void ev_view_form_field_text_save (EvView *view, GtkWidget *widget) { EvFormField *field; if (!view->document) return; field = g_object_get_data (G_OBJECT (widget), "form-field"); if (field->changed) { EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); cairo_region_t *field_region; field_region = ev_view_form_field_get_region (view, field); ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document), field, field_text->text); field->changed = FALSE; ev_view_reload_page (view, field->page->index, field_region); cairo_region_destroy (field_region); } } static void ev_view_form_field_text_changed (GtkWidget *widget, EvFormField *field) { EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); gchar *text = NULL; if (GTK_IS_ENTRY (widget)) { text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget))); } else if (GTK_IS_TEXT_BUFFER (widget)) { GtkTextIter start, end; gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end); text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget), &start, &end, FALSE); } if (!field_text->text || (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) { g_free (field_text->text); field_text->text = text; field->changed = TRUE; } } static gboolean ev_view_form_field_text_focus_out (GtkWidget *widget, GdkEventFocus *event, EvView *view) { ev_view_form_field_text_save (view, widget); return FALSE; } static GtkWidget * ev_view_form_field_text_create_widget (EvView *view, EvFormField *field) { EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); GtkWidget *text = NULL; gchar *txt; txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document), field); switch (field_text->type) { case EV_FORM_FIELD_TEXT_FILE_SELECT: /* TODO */ case EV_FORM_FIELD_TEXT_NORMAL: text = gtk_entry_new (); gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE); gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len); gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password); if (txt) { gtk_entry_set_text (GTK_ENTRY (text), txt); g_free (txt); } g_signal_connect (text, "focus-out-event", G_CALLBACK (ev_view_form_field_text_focus_out), view); g_signal_connect (text, "changed", G_CALLBACK (ev_view_form_field_text_changed), field); g_signal_connect_after (text, "activate", G_CALLBACK (ev_view_form_field_destroy), view); break; case EV_FORM_FIELD_TEXT_MULTILINE: { GtkTextBuffer *buffer; text = gtk_text_view_new (); buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text)); if (txt) { gtk_text_buffer_set_text (buffer, txt, -1); g_free (txt); } g_signal_connect (text, "focus-out-event", G_CALLBACK (ev_view_form_field_text_focus_out), view); g_signal_connect (buffer, "changed", G_CALLBACK (ev_view_form_field_text_changed), field); } break; } g_object_weak_ref (G_OBJECT (text), (GWeakNotify)ev_view_form_field_text_save, view); return text; } static void ev_view_form_field_choice_save (EvView *view, GtkWidget *widget) { EvFormField *field; if (!view->document) return; field = g_object_get_data (G_OBJECT (widget), "form-field"); if (field->changed) { GList *l; EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); cairo_region_t *field_region; field_region = ev_view_form_field_get_region (view, field); if (field_choice->is_editable) { ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document), field, field_choice->text); } else { ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field); for (l = field_choice->selected_items; l; l = g_list_next (l)) { ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document), field, GPOINTER_TO_INT (l->data)); } } field->changed = FALSE; ev_view_reload_page (view, field->page->index, field_region); cairo_region_destroy (field_region); } } static void ev_view_form_field_choice_changed (GtkWidget *widget, EvFormField *field) { EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); if (GTK_IS_COMBO_BOX (widget)) { gint item; item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget)); if (!field_choice->selected_items || GPOINTER_TO_INT (field_choice->selected_items->data) != item) { g_list_free (field_choice->selected_items); field_choice->selected_items = NULL; field_choice->selected_items = g_list_prepend (field_choice->selected_items, GINT_TO_POINTER (item)); field->changed = TRUE; } if (gtk_combo_box_get_has_entry (GTK_COMBO_BOX (widget))) { const gchar *text; text = gtk_entry_get_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (widget)))); if (!field_choice->text || (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) { g_free (field_choice->text); field_choice->text = g_strdup(text); field->changed = TRUE; } } } else if (GTK_IS_TREE_SELECTION (widget)) { GtkTreeSelection *selection = GTK_TREE_SELECTION (widget); GtkTreeModel *model; GList *items, *l; items = gtk_tree_selection_get_selected_rows (selection, &model); g_list_free (field_choice->selected_items); field_choice->selected_items = NULL; for (l = items; l && l->data; l = g_list_next (l)) { GtkTreeIter iter; GtkTreePath *path = (GtkTreePath *)l->data; gint item; gtk_tree_model_get_iter (model, &iter, path); gtk_tree_model_get (model, &iter, 1, &item, -1); field_choice->selected_items = g_list_prepend (field_choice->selected_items, GINT_TO_POINTER (item)); gtk_tree_path_free (path); } g_list_free (items); field->changed = TRUE; } } static GtkWidget * ev_view_form_field_choice_create_widget (EvView *view, EvFormField *field) { EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); GtkWidget *choice; GtkTreeModel *model; gint n_items, i; gint selected_item = 0; n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document), field); model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT)); for (i = 0; i < n_items; i++) { GtkTreeIter iter; gchar *item; item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document), field, i); if (ev_document_forms_form_field_choice_is_item_selected ( EV_DOCUMENT_FORMS (view->document), field, i)) { selected_item = i; /* FIXME: we need a get_selected_items function in poppler */ field_choice->selected_items = g_list_prepend (field_choice->selected_items, GINT_TO_POINTER (i)); } if (item) { gtk_list_store_append (GTK_LIST_STORE (model), &iter); gtk_list_store_set (GTK_LIST_STORE (model), &iter, 0, item, 1, i, -1); g_free (item); } } if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) { GtkCellRenderer *renderer; GtkWidget *tree_view; GtkTreeSelection *selection; tree_view = gtk_tree_view_new_with_model (model); gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE); selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)); if (field_choice->multi_select) { gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE); } /* TODO: set selected items */ renderer = gtk_cell_renderer_text_new (); gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view), 0, "choix", renderer, "text", 0, NULL); choice = gtk_scrolled_window_new (NULL, NULL); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_container_add (GTK_CONTAINER (choice), tree_view); gtk_widget_show (tree_view); g_signal_connect (selection, "changed", G_CALLBACK (ev_view_form_field_choice_changed), field); g_signal_connect_after (selection, "changed", G_CALLBACK (ev_view_form_field_destroy), view); } else if (field_choice->is_editable) { /* ComboBoxEntry */ gchar *text; choice = gtk_combo_box_new_with_model_and_entry (model); gtk_combo_box_set_entry_text_column (GTK_COMBO_BOX (choice), 0); text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field); if (text) { gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text); g_free (text); } g_signal_connect (choice, "changed", G_CALLBACK (ev_view_form_field_choice_changed), field); g_signal_connect_after (gtk_bin_get_child (GTK_BIN (choice)), "activate", G_CALLBACK (ev_view_form_field_destroy), view); } else { /* ComboBoxText */ GtkCellRenderer *renderer; choice = gtk_combo_box_new_with_model (model); renderer = gtk_cell_renderer_text_new (); gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice), renderer, TRUE); gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice), renderer, "text", 0, NULL); gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item); gtk_combo_box_popup (GTK_COMBO_BOX (choice)); g_signal_connect (choice, "changed", G_CALLBACK (ev_view_form_field_choice_changed), field); g_signal_connect_after (choice, "changed", G_CALLBACK (ev_view_form_field_destroy), view); } g_object_unref (model); g_object_weak_ref (G_OBJECT (choice), (GWeakNotify)ev_view_form_field_choice_save, view); return choice; } void _ev_view_focus_form_field (EvView *view, EvFormField *field) { GtkWidget *field_widget = NULL; EvMappingList *form_field_mapping; EvMapping *mapping; _ev_view_set_focused_element (view, NULL, -1); if (field->is_read_only) return; if (EV_IS_FORM_FIELD_BUTTON (field)) { field_widget = ev_view_form_field_button_create_widget (view, field); } else if (EV_IS_FORM_FIELD_TEXT (field)) { field_widget = ev_view_form_field_text_create_widget (view, field); } else if (EV_IS_FORM_FIELD_CHOICE (field)) { field_widget = ev_view_form_field_choice_create_widget (view, field); } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) { /* TODO */ } /* Form field doesn't require a widget */ if (!field_widget) return; g_object_set_data_full (G_OBJECT (field_widget), "form-field", g_object_ref (field), (GDestroyNotify)g_object_unref); form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, field->page->index); mapping = ev_mapping_list_find (form_field_mapping, field); ev_view_put_to_doc_rect (view, field_widget, field->page->index, &mapping->area); gtk_widget_show (field_widget); gtk_widget_grab_focus (field_widget); } static void ev_view_handle_form_field (EvView *view, EvFormField *field) { if (field->is_read_only) return; _ev_view_focus_form_field (view, field); if (field->activation_link) ev_view_handle_link (view, field->activation_link); if (EV_IS_FORM_FIELD_BUTTON (field)) ev_view_form_field_button_toggle (view, field); } /* Annotations */ static EvViewWindowChild * ev_view_get_window_child (EvView *view, GtkWidget *window) { GList *children = view->window_children; while (children) { EvViewWindowChild *child; child = (EvViewWindowChild *)children->data; children = children->next; if (child->window == window) return child; } return NULL; } static void ev_view_window_child_move (EvView *view, EvViewWindowChild *child, gint x, gint y) { GtkAllocation allocation; gint width, height; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); gtk_window_get_size (GTK_WINDOW (child->window), &width, &height); child->x = x; child->y = y; gtk_window_move (GTK_WINDOW (child->window), CLAMP (x, child->parent_x, child->parent_x + allocation.width - width), CLAMP (y, child->parent_y, child->parent_y + allocation.height - height)); } static void ev_view_window_child_move_with_parent (EvView *view, GtkWidget *window) { EvViewWindowChild *child; gint root_x, root_y; child = ev_view_get_window_child (view, window); gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)), &root_x, &root_y); if (root_x != child->parent_x || root_y != child->parent_y) { gint dest_x, dest_y; dest_x = child->x + (root_x - child->parent_x); dest_y = child->y + (root_y - child->parent_y); child->parent_x = root_x; child->parent_y = root_y; ev_view_window_child_move (view, child, dest_x, dest_y); } if (child->visible && !gtk_widget_get_visible (window)) gtk_widget_show (window); } static void ev_view_window_child_put (EvView *view, GtkWidget *window, guint page, gint x, gint y, gdouble orig_x, gdouble orig_y) { EvViewWindowChild *child; gint root_x, root_y; gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)), &root_x, &root_y); child = g_new0 (EvViewWindowChild, 1); child->window = window; child->page = page; child->orig_x = orig_x; child->orig_y = orig_y; child->parent_x = root_x; child->parent_y = root_y; child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window)); ev_view_window_child_move (view, child, x + root_x, y + root_y); if (child->visible) gtk_widget_show (window); else gtk_widget_hide (window); view->window_children = g_list_append (view->window_children, child); } static EvViewWindowChild * ev_view_find_window_child_for_annot (EvView *view, guint page, EvAnnotation *annot) { GList *children = view->window_children; while (children) { EvViewWindowChild *child; EvAnnotation *wannot; child = (EvViewWindowChild *)children->data; children = children->next; if (child->page != page) continue; wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window)); if (ev_annotation_equal (wannot, annot)) return child; } return NULL; } static void ev_view_window_children_free (EvView *view) { GList *l; if (!view->window_children) return; for (l = view->window_children; l && l->data; l = g_list_next (l)) { EvViewWindowChild *child; child = (EvViewWindowChild *)l->data; gtk_widget_destroy (GTK_WIDGET (child->window)); g_free (child); } g_list_free (view->window_children); view->window_children = NULL; view->window_child_focus = NULL; } static void annotation_window_grab_focus (GtkWidget *widget, EvView *view) { if (view->window_child_focus) ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window)); view->window_child_focus = ev_view_get_window_child (view, widget); } static void annotation_window_closed (EvAnnotationWindow *window, EvView *view) { EvViewWindowChild *child; child = ev_view_get_window_child (view, GTK_WIDGET (window)); child->visible = FALSE; } static void annotation_window_moved (EvAnnotationWindow *window, gint x, gint y, EvView *view) { EvViewWindowChild *child; GdkRectangle page_area; GtkBorder border; GdkRectangle view_rect; EvRectangle doc_rect; gint width, height; child = ev_view_get_window_child (view, GTK_WIDGET (window)); if (child->x == x && child->y == y) return; child->moved = TRUE; child->x = x; child->y = y; /* Window has been moved by the user, * we have to set a new origin in doc coords */ gtk_window_get_size (GTK_WINDOW (window), &width, &height); view_rect.x = (x - child->parent_x) + view->scroll_x; view_rect.y = (y - child->parent_y) + view->scroll_y; view_rect.width = width; view_rect.height = height; ev_view_get_page_extents (view, child->page, &page_area, &border); _ev_view_transform_view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect); child->orig_x = doc_rect.x1; child->orig_y = doc_rect.y1; } static void ev_view_annotation_save_contents (EvView *view, GParamSpec *pspec, EvAnnotation *annot) { if (!view->document) return; ev_document_doc_mutex_lock (); ev_document_annotations_save_annotation (EV_DOCUMENT_ANNOTATIONS (view->document), annot, EV_ANNOTATIONS_SAVE_CONTENTS); ev_document_doc_mutex_unlock (); } static GtkWidget * ev_view_create_annotation_window (EvView *view, EvAnnotation *annot, GtkWindow *parent) { GtkWidget *window; EvRectangle doc_rect; GdkRectangle view_rect; guint page; window = ev_annotation_window_new (annot, parent); g_signal_connect (window, "grab_focus", G_CALLBACK (annotation_window_grab_focus), view); g_signal_connect (window, "closed", G_CALLBACK (annotation_window_closed), view); g_signal_connect (window, "moved", G_CALLBACK (annotation_window_moved), view); g_signal_connect_swapped (annot, "notify::contents", G_CALLBACK (ev_view_annotation_save_contents), view); g_object_set_data (G_OBJECT (annot), "popup", window); page = ev_annotation_get_page_index (annot); ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window), &doc_rect); _ev_view_transform_doc_rect_to_view_rect (view, page, &doc_rect, &view_rect); view_rect.x -= view->scroll_x; view_rect.y -= view->scroll_y; ev_view_window_child_put (view, window, page, view_rect.x, view_rect.y, doc_rect.x1, doc_rect.y1); return window; } static void show_annotation_windows (EvView *view, gint page) { EvMappingList *annots; GList *l; GtkWindow *parent; parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view))); annots = ev_page_cache_get_annot_mapping (view->page_cache, page); for (l = ev_mapping_list_get_list (annots); l && l->data; l = g_list_next (l)) { EvAnnotation *annot; EvViewWindowChild *child; GtkWidget *window; annot = ((EvMapping *)(l->data))->data; if (!EV_IS_ANNOTATION_MARKUP (annot)) continue; if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot))) continue; window = g_object_get_data (G_OBJECT (annot), "popup"); if (window) { ev_view_window_child_move_with_parent (view, window); continue; } /* Look if we already have a popup for this annot */ child = ev_view_find_window_child_for_annot (view, page, annot); window = child ? child->window : NULL; if (window) { ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot); g_object_set_data (G_OBJECT (annot), "popup", window); ev_view_window_child_move_with_parent (view, window); } else { ev_view_create_annotation_window (view, annot, parent); } } } static void hide_annotation_windows (EvView *view, gint page) { EvMappingList *annots; GList *l; annots = ev_page_cache_get_annot_mapping (view->page_cache, page); for (l = ev_mapping_list_get_list (annots); l && l->data; l = g_list_next (l)) { EvAnnotation *annot; GtkWidget *window; annot = ((EvMapping *)(l->data))->data; if (!EV_IS_ANNOTATION_MARKUP (annot)) continue; window = g_object_get_data (G_OBJECT (annot), "popup"); if (window) gtk_widget_hide (window); } } static EvMapping * get_annotation_mapping_at_location (EvView *view, gdouble x, gdouble y, gint *page) { gint x_new = 0, y_new = 0; EvMappingList *annotations_mapping; if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, page, &x_new, &y_new)) return NULL; annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, *page); if (annotations_mapping) return ev_mapping_list_get (annotations_mapping, x_new, y_new); return NULL; } static EvAnnotation * ev_view_get_annotation_at_location (EvView *view, gdouble x, gdouble y) { EvMapping *annotation_mapping; gint page; annotation_mapping = get_annotation_mapping_at_location (view, x, y, &page); return annotation_mapping ? annotation_mapping->data : NULL; } static void ev_view_annotation_show_popup_window (EvView *view, GtkWidget *window) { EvViewWindowChild *child; if (!window) return; child = ev_view_get_window_child (view, window); if (!child->visible) { child->visible = TRUE; ev_view_window_child_move (view, child, child->x, child->y); gtk_widget_show (window); } } static void ev_view_handle_annotation (EvView *view, EvAnnotation *annot, gdouble x, gdouble y, guint32 timestamp) { if (EV_IS_ANNOTATION_MARKUP (annot)) { GtkWidget *window; window = g_object_get_data (G_OBJECT (annot), "popup"); ev_view_annotation_show_popup_window (view, window); } if (EV_IS_ANNOTATION_ATTACHMENT (annot)) { EvAttachment *attachment; attachment = ev_annotation_attachment_get_attachment (EV_ANNOTATION_ATTACHMENT (annot)); if (attachment) { GError *error = NULL; ev_attachment_open (attachment, gtk_widget_get_screen (GTK_WIDGET (view)), timestamp, &error); if (error) { g_warning ("%s", error->message); g_error_free (error); } } } } static void ev_view_create_annotation (EvView *view, EvAnnotationType annot_type, gint x, gint y) { EvAnnotation *annot; GdkPoint point; GdkRectangle page_area; GtkBorder border; EvRectangle doc_rect, popup_rect; EvPage *page; GdkColor color = { 0, 65535, 65535, 0 }; GdkRectangle view_rect; cairo_region_t *region; point.x = x; point.y = y; ev_view_get_page_extents (view, view->current_page, &page_area, &border); _ev_view_transform_view_point_to_doc_point (view, &point, &page_area, &doc_rect.x1, &doc_rect.y1); doc_rect.x2 = doc_rect.x1 + 24; doc_rect.y2 = doc_rect.y1 + 24; ev_document_doc_mutex_lock (); page = ev_document_get_page (view->document, view->current_page); switch (annot_type) { case EV_ANNOTATION_TYPE_TEXT: annot = ev_annotation_text_new (page); break; case EV_ANNOTATION_TYPE_ATTACHMENT: /* TODO */ g_object_unref (page); ev_document_doc_mutex_unlock (); return; default: g_assert_not_reached (); } g_object_unref (page); ev_annotation_set_color (annot, &color); if (EV_IS_ANNOTATION_MARKUP (annot)) { popup_rect.x1 = doc_rect.x2; popup_rect.x2 = popup_rect.x1 + 200; popup_rect.y1 = doc_rect.y2; popup_rect.y2 = popup_rect.y1 + 150; g_object_set (annot, "rectangle", &popup_rect, "has_popup", TRUE, "popup_is_open", FALSE, "label", g_get_real_name (), "opacity", 1.0, NULL); } ev_document_annotations_add_annotation (EV_DOCUMENT_ANNOTATIONS (view->document), annot, &doc_rect); ev_document_doc_mutex_unlock (); /* If the page didn't have annots, mark the cache as dirty */ if (!ev_page_cache_get_annot_mapping (view->page_cache, view->current_page)) ev_page_cache_mark_dirty (view->page_cache, view->current_page, EV_PAGE_DATA_INCLUDE_ANNOTS); if (EV_IS_ANNOTATION_MARKUP (annot)) { GtkWindow *parent; GtkWidget *window; parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view))); window = ev_view_create_annotation_window (view, annot, parent); /* Show the annot window the first time */ ev_view_annotation_show_popup_window (view, window); } _ev_view_transform_doc_rect_to_view_rect (view, view->current_page, &doc_rect, &view_rect); view_rect.x -= view->scroll_x; view_rect.y -= view->scroll_y; region = cairo_region_create_rectangle (&view_rect); ev_view_reload_page (view, view->current_page, region); cairo_region_destroy (region); g_signal_emit (view, signals[SIGNAL_ANNOT_ADDED], 0, annot); } void ev_view_focus_annotation (EvView *view, EvMapping *annot_mapping) { if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document)) return; _ev_view_set_focused_element (view, annot_mapping, ev_annotation_get_page_index (EV_ANNOTATION (annot_mapping->data))); } void ev_view_begin_add_annotation (EvView *view, EvAnnotationType annot_type) { if (annot_type == EV_ANNOTATION_TYPE_UNKNOWN) return; if (view->adding_annot) return; view->adding_annot = TRUE; view->adding_annot_type = annot_type; ev_view_set_cursor (view, EV_VIEW_CURSOR_ADD); } void ev_view_cancel_add_annotation (EvView *view) { gint x, y; if (!view->adding_annot) return; view->adding_annot = FALSE; ev_document_misc_get_pointer_position (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); } void ev_view_remove_annotation (EvView *view, EvAnnotation *annot) { guint page; g_return_if_fail (EV_IS_VIEW (view)); g_return_if_fail (EV_IS_ANNOTATION (annot)); g_object_ref (annot); page = ev_annotation_get_page_index (annot); if (EV_IS_ANNOTATION_MARKUP (annot)) { EvViewWindowChild *child; child = ev_view_find_window_child_for_annot (view, page, annot); if (child) { view->window_children = g_list_remove (view->window_children, child); gtk_widget_destroy (child->window); g_free (child); } } _ev_view_set_focused_element (view, NULL, -1); ev_document_doc_mutex_lock (); ev_document_annotations_remove_annotation (EV_DOCUMENT_ANNOTATIONS (view->document), annot); ev_document_doc_mutex_unlock (); ev_page_cache_mark_dirty (view->page_cache, page, EV_PAGE_DATA_INCLUDE_ANNOTS); /* FIXME: only redraw the annot area */ ev_view_reload_page (view, page, NULL); g_signal_emit (view, signals[SIGNAL_ANNOT_REMOVED], 0, annot); g_object_unref (annot); } static gboolean ev_view_synctex_backward_search (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_new = 0, y_new = 0; EvSourceLink *link; if (!ev_document_has_synctex (view->document)) return FALSE; if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new)) return FALSE; link = ev_document_synctex_backward_search (view->document, page, x_new, y_new); if (link) { g_signal_emit (view, signals[SIGNAL_SYNC_SOURCE], 0, link); ev_source_link_free (link); return TRUE; } return FALSE; } /* Caret navigation */ #define CURSOR_ON_MULTIPLIER 2 #define CURSOR_OFF_MULTIPLIER 1 #define CURSOR_PEND_MULTIPLIER 3 #define CURSOR_DIVIDER 3 static inline gboolean cursor_is_in_visible_page (EvView *view) { return (view->cursor_page == view->current_page || (view->cursor_page >= view->start_page && view->cursor_page <= view->end_page)); } static gboolean cursor_should_blink (EvView *view) { if (view->caret_enabled && view->rotation == 0 && cursor_is_in_visible_page (view) && gtk_widget_has_focus (GTK_WIDGET (view)) && view->pixbuf_cache && !ev_pixbuf_cache_get_selection_region (view->pixbuf_cache, view->cursor_page, view->scale)) { GtkSettings *settings; gboolean blink; settings = gtk_widget_get_settings (GTK_WIDGET (view)); g_object_get (settings, "gtk-cursor-blink", &blink, NULL); return blink; } return FALSE; } static gint get_cursor_blink_time (EvView *view) { GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (view)); gint time; g_object_get (settings, "gtk-cursor-blink-time", &time, NULL); return time; } static gint get_cursor_blink_timeout_id (EvView *view) { GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (view)); gint timeout; g_object_get (settings, "gtk-cursor-blink-timeout", &timeout, NULL); return timeout; } static gboolean get_caret_cursor_area (EvView *view, gint page, gint offset, GdkRectangle *area) { EvRectangle *areas = NULL; EvRectangle *doc_rect; guint n_areas = 0; gfloat cursor_aspect_ratio; gint stem_width; if (!view->caret_enabled || view->rotation != 0) return FALSE; if (!view->page_cache) return FALSE; ev_page_cache_get_text_layout (view->page_cache, page, &areas, &n_areas); if (!areas) return FALSE; if (offset > n_areas) return FALSE; doc_rect = areas + offset; if (offset == n_areas || ((doc_rect->x1 == doc_rect->x2 || doc_rect->y1 == doc_rect->y2) && offset > 0)) { EvRectangle *prev; EvRectangle last_rect; /* Special characters like \n have an empty bounding box * and the end of a page doesn't have any bounding box, * use the size of the previous area. */ prev = areas + offset - 1; last_rect.x1 = prev->x2; last_rect.y1 = prev->y1; last_rect.x2 = prev->x2 + (prev->x2 - prev->x1); last_rect.y2 = prev->y2; _ev_view_transform_doc_rect_to_view_rect (view, page, &last_rect, area); } else { _ev_view_transform_doc_rect_to_view_rect (view, page, doc_rect, area); } area->x -= view->scroll_x; area->y -= view->scroll_y; gtk_style_context_get_style (gtk_widget_get_style_context (GTK_WIDGET (view)), "cursor-aspect-ratio", &cursor_aspect_ratio, NULL); stem_width = area->height * cursor_aspect_ratio + 1; area->x -= (stem_width / 2); area->width = stem_width; return TRUE; } static void show_cursor (EvView *view) { GtkWidget *widget; GdkRectangle view_rect; if (view->cursor_visible) return; widget = GTK_WIDGET (view); view->cursor_visible = TRUE; if (gtk_widget_has_focus (widget) && get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &view_rect)) { gtk_widget_queue_draw_area (widget, view_rect.x, view_rect.y, view_rect.width, view_rect.height); } } static void hide_cursor (EvView *view) { GtkWidget *widget; GdkRectangle view_rect; if (!view->cursor_visible) return; widget = GTK_WIDGET (view); view->cursor_visible = FALSE; if (gtk_widget_has_focus (widget) && get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &view_rect)) { gtk_widget_queue_draw_area (widget, view_rect.x, view_rect.y, view_rect.width, view_rect.height); } } static gboolean blink_cb (EvView *view) { gint blink_timeout; guint blink_time; blink_timeout = get_cursor_blink_timeout_id (view); if (view->cursor_blink_time > 1000 * blink_timeout && blink_timeout < G_MAXINT / 1000) { /* We've blinked enough without the user doing anything, stop blinking */ show_cursor (view); view->cursor_blink_timeout_id = 0; return FALSE; } blink_time = get_cursor_blink_time (view); if (view->cursor_visible) { hide_cursor (view); blink_time *= CURSOR_OFF_MULTIPLIER; } else { show_cursor (view); view->cursor_blink_time += blink_time; blink_time *= CURSOR_ON_MULTIPLIER; } view->cursor_blink_timeout_id = gdk_threads_add_timeout (blink_time / CURSOR_DIVIDER, (GSourceFunc)blink_cb, view); return FALSE; } static void ev_view_check_cursor_blink (EvView *view) { if (cursor_should_blink (view)) { if (view->cursor_blink_timeout_id == 0) { show_cursor (view); view->cursor_blink_timeout_id = gdk_threads_add_timeout (get_cursor_blink_time (view) * CURSOR_ON_MULTIPLIER / CURSOR_DIVIDER, (GSourceFunc)blink_cb, view); } return; } if (view->cursor_blink_timeout_id > 0) { g_source_remove (view->cursor_blink_timeout_id); view->cursor_blink_timeout_id = 0; } view->cursor_visible = TRUE; view->cursor_blink_time = 0; } static void ev_view_pend_cursor_blink (EvView *view) { if (!cursor_should_blink (view)) return; if (view->cursor_blink_timeout_id > 0) g_source_remove (view->cursor_blink_timeout_id); show_cursor (view); view->cursor_blink_timeout_id = gdk_threads_add_timeout (get_cursor_blink_time (view) * CURSOR_PEND_MULTIPLIER / CURSOR_DIVIDER, (GSourceFunc)blink_cb, view); } gboolean ev_view_supports_caret_navigation (EvView *view) { EvDocumentTextInterface *iface; if (!view->document || !EV_IS_DOCUMENT_TEXT (view->document)) return FALSE; iface = EV_DOCUMENT_TEXT_GET_IFACE (view->document); if (!iface->get_text_layout || !iface->get_text) return FALSE; return TRUE; } void ev_view_set_caret_navigation_enabled (EvView *view, gboolean enabled) { g_return_if_fail (EV_IS_VIEW (view)); if (view->caret_enabled != enabled) { view->caret_enabled = enabled; ev_view_check_cursor_blink (view); if (cursor_is_in_visible_page (view)) gtk_widget_queue_draw (GTK_WIDGET (view)); } } gboolean ev_view_is_caret_navigation_enabled (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), FALSE); return view->caret_enabled; } void ev_view_set_caret_cursor_position (EvView *view, guint page, guint offset) { g_return_if_fail (EV_IS_VIEW (view)); g_return_if_fail (EV_IS_DOCUMENT (view->document)); g_return_if_fail (page < ev_document_get_n_pages (view->document)); if (view->cursor_page != page || view->cursor_offset != offset) { view->cursor_page = page; view->cursor_offset = offset; g_signal_emit (view, signals[SIGNAL_CURSOR_MOVED], 0, view->cursor_page, view->cursor_offset); if (view->caret_enabled && cursor_is_in_visible_page (view)) gtk_widget_queue_draw (GTK_WIDGET (view)); } } /*** GtkWidget implementation ***/ static void ev_view_size_request_continuous_dual_page (EvView *view, GtkRequisition *requisition) { gint n_pages; n_pages = ev_document_get_n_pages (view->document) + 1; get_page_y_offset (view, n_pages, &requisition->height); switch (view->sizing_mode) { case EV_SIZING_FIT_WIDTH: case EV_SIZING_FIT_PAGE: case EV_SIZING_AUTOMATIC: requisition->width = 1; break; case EV_SIZING_FREE: { gint max_width; GtkBorder border; ev_view_get_max_page_size (view, &max_width, NULL); compute_border (view, &border); requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3); } break; default: g_assert_not_reached (); } } static void ev_view_size_request_continuous (EvView *view, GtkRequisition *requisition) { gint n_pages; n_pages = ev_document_get_n_pages (view->document); get_page_y_offset (view, n_pages, &requisition->height); switch (view->sizing_mode) { case EV_SIZING_FIT_WIDTH: case EV_SIZING_FIT_PAGE: case EV_SIZING_AUTOMATIC: requisition->width = 1; break; case EV_SIZING_FREE: { gint max_width; GtkBorder border; ev_view_get_max_page_size (view, &max_width, NULL); compute_border (view, &border); requisition->width = max_width + (view->spacing * 2) + border.left + border.right; } break; default: g_assert_not_reached (); } } static void ev_view_size_request_dual_page (EvView *view, GtkRequisition *requisition) { GtkBorder border; gint width, height; if (view->sizing_mode == EV_SIZING_FIT_PAGE) { requisition->width = 1; requisition->height = 1; return; } /* Find the largest of the two. */ ev_view_get_page_size (view, view->current_page, &width, &height); if (view->current_page + 1 < ev_document_get_n_pages (view->document)) { gint width_2, height_2; ev_view_get_page_size (view, view->current_page + 1, &width_2, &height_2); if (width_2 > width) { width = width_2; height = height_2; } } compute_border (view, &border); requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 : ((width + border.left + border.right) * 2) + (view->spacing * 3); requisition->height = (height + border.top + border.bottom) + (view->spacing * 2); } static void ev_view_size_request_single_page (EvView *view, GtkRequisition *requisition) { GtkBorder border; gint width, height; if (view->sizing_mode == EV_SIZING_FIT_PAGE) { requisition->width = 1; requisition->height = 1; return; } ev_view_get_page_size (view, view->current_page, &width, &height); compute_border (view, &border); requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 : width + border.left + border.right + (2 * view->spacing); requisition->height = height + border.top + border.bottom + (2 * view->spacing); } static void ev_view_size_request (GtkWidget *widget, GtkRequisition *requisition) { EvView *view = EV_VIEW (widget); gboolean dual_page; if (view->document == NULL) { view->requisition.width = 1; view->requisition.height = 1; *requisition = view->requisition; return; } /* Get zoom for size here when not called from * ev_view_size_allocate() */ if (!view->internal_size_request && (view->sizing_mode == EV_SIZING_FIT_WIDTH || view->sizing_mode == EV_SIZING_FIT_PAGE || view->sizing_mode == EV_SIZING_AUTOMATIC)) { GtkAllocation allocation; gtk_widget_get_allocation (widget, &allocation); ev_view_zoom_for_size (view, allocation.width, allocation.height); } dual_page = is_dual_page (view, NULL); if (view->continuous && dual_page) ev_view_size_request_continuous_dual_page (view, &view->requisition); else if (view->continuous) ev_view_size_request_continuous (view, &view->requisition); else if (dual_page) ev_view_size_request_dual_page (view, &view->requisition); else ev_view_size_request_single_page (view, &view->requisition); *requisition = view->requisition; } static void ev_view_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural) { GtkRequisition requisition; ev_view_size_request (widget, &requisition); *minimum = *natural = requisition.width; } static void ev_view_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural) { GtkRequisition requisition; ev_view_size_request (widget, &requisition); *minimum = *natural = requisition.height; } static void ev_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { EvView *view = EV_VIEW (widget); GList *l; gint root_x, root_y; gtk_widget_set_allocation (widget, allocation); if (gtk_widget_get_realized (widget)) gdk_window_move_resize (gtk_widget_get_window (widget), allocation->x, allocation->y, allocation->width, allocation->height); if (!view->document) return; if (view->sizing_mode == EV_SIZING_FIT_WIDTH || view->sizing_mode == EV_SIZING_FIT_PAGE || view->sizing_mode == EV_SIZING_AUTOMATIC) { GtkRequisition req; ev_view_zoom_for_size (view, allocation->width, allocation->height); view->internal_size_request = TRUE; ev_view_size_request (widget, &req); view->internal_size_request = FALSE; } view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL); view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL); if (view->document) view_update_range_and_current_page (view); view->pending_scroll = SCROLL_TO_KEEP_POSITION; view->pending_resize = FALSE; view->pending_point.x = 0; view->pending_point.y = 0; for (l = view->children; l && l->data; l = g_list_next (l)) { GdkRectangle view_area; EvViewChild *child = (EvViewChild *)l->data; if (!gtk_widget_get_visible (child->widget)) continue; _ev_view_transform_doc_rect_to_view_rect (view, child->page, &child->doc_rect, &view_area); view_area.x -= view->scroll_x; view_area.y -= view->scroll_y; gtk_widget_set_size_request (child->widget, view_area.width, view_area.height); gtk_widget_size_allocate (child->widget, &view_area); } if (view->window_children) gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)), &root_x, &root_y); for (l = view->window_children; l && l->data; l = g_list_next (l)) { EvViewWindowChild *child; EvRectangle doc_rect; GdkRectangle view_rect; child = (EvViewWindowChild *)l->data; ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window), &doc_rect); if (child->moved) { doc_rect.x1 = child->orig_x; doc_rect.y1 = child->orig_y; } _ev_view_transform_doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect); view_rect.x -= view->scroll_x; view_rect.y -= view->scroll_y; if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) { child->parent_x = root_x; child->parent_y = root_y; ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y); } } } static gboolean ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event) { EvView *view = EV_VIEW (widget); guint state; gboolean fit_width, fit_height; state = event->state & gtk_accelerator_get_default_mod_mask (); if (state == GDK_CONTROL_MASK) { ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); view->zoom_center_x = event->x; view->zoom_center_y = event->y; switch (event->direction) { case GDK_SCROLL_DOWN: case GDK_SCROLL_RIGHT: if (ev_view_can_zoom_out (view)) ev_view_zoom_out (view); break; case GDK_SCROLL_UP: case GDK_SCROLL_LEFT: if (ev_view_can_zoom_in (view)) ev_view_zoom_in (view); break; case GDK_SCROLL_SMOOTH: { gdouble delta = event->delta_x + event->delta_y; gdouble factor = pow (delta < 0 ? ZOOM_IN_FACTOR : ZOOM_OUT_FACTOR, fabs (delta)); if ((factor < 1.0 && ev_view_can_zoom_out (view)) || (factor >= 1.0 && ev_view_can_zoom_in (view))) ev_view_zoom (view, factor); } break; } return TRUE; } view->jump_to_find_result = FALSE; /* Shift+Wheel scrolls the in the perpendicular direction */ if (state & GDK_SHIFT_MASK) { if (event->direction == GDK_SCROLL_UP) event->direction = GDK_SCROLL_LEFT; else if (event->direction == GDK_SCROLL_LEFT) event->direction = GDK_SCROLL_UP; else if (event->direction == GDK_SCROLL_DOWN) event->direction = GDK_SCROLL_RIGHT; else if (event->direction == GDK_SCROLL_RIGHT) event->direction = GDK_SCROLL_DOWN; else if (event->direction == GDK_SCROLL_SMOOTH) { /* Swap the deltas for perpendicular direction */ gdouble tmp_delta = event->delta_x; event->delta_x = event->delta_y; event->delta_y = tmp_delta; } event->state &= ~GDK_SHIFT_MASK; state &= ~GDK_SHIFT_MASK; } fit_width = ev_view_page_fits (view, GTK_ORIENTATION_HORIZONTAL); fit_height = ev_view_page_fits (view, GTK_ORIENTATION_VERTICAL); if (state == 0 && !view->continuous && (fit_width || fit_height)) { switch (event->direction) { case GDK_SCROLL_DOWN: if (fit_height) { ev_view_next_page (view); return TRUE; } break; case GDK_SCROLL_RIGHT: if (fit_width) { ev_view_next_page (view); return TRUE; } break; case GDK_SCROLL_UP: if (fit_height) { ev_view_previous_page (view); return TRUE; } break; case GDK_SCROLL_LEFT: if (fit_width) { ev_view_previous_page (view); return TRUE; } break; case GDK_SCROLL_SMOOTH: { gdouble decrement; if ((fit_width && fit_height) || ((fit_height && event->delta_x == 0.0) || (fit_width && event->delta_y == 0.0))) { /* Emulate normal scrolling by summing the deltas */ view->total_delta += event->delta_x + event->delta_y; decrement = view->total_delta < 0 ? -1.0 : 1.0; for (; fabs (view->total_delta) >= 1.0; view->total_delta -= decrement) { if (decrement < 0) ev_view_previous_page (view); else ev_view_next_page (view); } return TRUE; } } break; } return FALSE; } return FALSE; } static EvViewSelection * find_selection_for_page (EvView *view, gint page) { GList *list; for (list = view->selection_info.selections; list != NULL; list = list->next) { EvViewSelection *selection; selection = (EvViewSelection *) list->data; if (selection->page == page) return selection; } return NULL; } static void ev_view_realize (GtkWidget *widget) { GtkAllocation allocation; GdkWindow *window; GdkWindowAttr attributes; gint attributes_mask; gtk_widget_set_realized (widget, TRUE); gtk_widget_get_allocation (widget, &allocation); attributes.window_type = GDK_WINDOW_CHILD; attributes.x = allocation.x; attributes.y = allocation.y; attributes.width = allocation.width; attributes.height = allocation.height; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.event_mask = gtk_widget_get_events (widget); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL; window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gtk_widget_set_window (widget, window); gdk_window_set_user_data (window, widget); } static void get_cursor_color (GtkStyleContext *context, GdkRGBA *color) { GdkColor *style_color; gtk_style_context_get_style (context, "cursor-color", &style_color, NULL); if (style_color) { color->red = style_color->red / 65535.0; color->green = style_color->green / 65535.0; color->blue = style_color->blue / 65535.0; color->alpha = 1; gdk_color_free (style_color); } else { gtk_style_context_save (context); gtk_style_context_get_color (context, GTK_STATE_FLAG_NORMAL, color); gtk_style_context_restore (context); } } /* This is based on the deprecated function gtk_draw_insertion_cursor. */ static void draw_caret_cursor (EvView *view, cairo_t *cr) { GdkRectangle view_rect; GdkRGBA cursor_color; if (!get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &view_rect)) return; get_cursor_color (gtk_widget_get_style_context (GTK_WIDGET (view)), &cursor_color); cairo_save (cr); gdk_cairo_set_source_rgba (cr, &cursor_color); cairo_rectangle (cr, view_rect.x, view_rect.y, view_rect.width, view_rect.height); cairo_fill (cr); cairo_restore (cr); } static gboolean should_draw_caret_cursor (EvView *view, gint page) { return (view->caret_enabled && view->cursor_page == page && view->cursor_visible && gtk_widget_has_focus (GTK_WIDGET (view)) && !ev_pixbuf_cache_get_selection_region (view->pixbuf_cache, page, view->scale)); } static void draw_focus (EvView *view, cairo_t *cr, gint page, GdkRectangle *clip) { GtkWidget *widget = GTK_WIDGET (view); GdkRectangle rect; GdkRectangle intersect; if (view->focused_element_page != page) return; if (!ev_view_get_focused_area (view, &rect)) return; if (gdk_rectangle_intersect (&rect, clip, &intersect)) { gtk_render_focus (gtk_widget_get_style_context (widget), cr, intersect.x, intersect.y, intersect.width, intersect.height); } } static gboolean ev_view_draw (GtkWidget *widget, cairo_t *cr) { EvView *view = EV_VIEW (widget); cairo_rectangle_int_t clip_rect; GdkRectangle *area = &clip_rect; gint i; gtk_render_background (gtk_widget_get_style_context (widget), cr, 0, 0, gtk_widget_get_allocated_width (widget), gtk_widget_get_allocated_height (widget)); if (view->document == NULL) return FALSE; if (!gdk_cairo_get_clip_rectangle (cr, &clip_rect)) return FALSE; for (i = view->start_page; i >= 0 && i <= view->end_page; i++) { GdkRectangle page_area; GtkBorder border; gboolean page_ready = TRUE; if (!ev_view_get_page_extents (view, i, &page_area, &border)) continue; page_area.x -= view->scroll_x; page_area.y -= view->scroll_y; draw_one_page (view, i, cr, &page_area, &border, area, &page_ready); if (page_ready && should_draw_caret_cursor (view, i)) draw_caret_cursor (view, cr); if (page_ready && view->find_pages && view->highlight_find_results) highlight_find_results (view, cr, i); if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document)) show_annotation_windows (view, i); if (page_ready && view->focused_element) draw_focus (view, cr, i, &clip_rect); if (page_ready && view->synctex_result) highlight_forward_search_results (view, cr, i); } if (GTK_WIDGET_CLASS (ev_view_parent_class)->draw) (* GTK_WIDGET_CLASS (ev_view_parent_class)->draw) (widget, cr); return FALSE; } static void ev_view_set_focused_element_at_location (EvView *view, gdouble x, gdouble y) { EvMapping *mapping; EvFormField *field; gint page; mapping = get_annotation_mapping_at_location (view, x, y, &page); if (mapping) { _ev_view_set_focused_element (view, mapping, page); return; } mapping = get_link_mapping_at_location (view, x, y, &page); if (mapping) { _ev_view_set_focused_element (view, mapping, page); return; } if ((field = ev_view_get_form_field_at_location (view, x, y))) { ev_view_remove_all (view); _ev_view_focus_form_field (view, field); return; } _ev_view_set_focused_element (view, NULL, -1); } static gboolean ev_view_do_popup_menu (EvView *view, gdouble x, gdouble y) { GList *items = NULL; EvLink *link; EvImage *image; EvAnnotation *annot; image = ev_view_get_image_at_location (view, x, y); if (image) items = g_list_prepend (items, image); link = ev_view_get_link_at_location (view, x, y); if (link) items = g_list_prepend (items, link); annot = ev_view_get_annotation_at_location (view, x, y); if (annot) items = g_list_prepend (items, annot); g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, items); g_list_free (items); return TRUE; } static gboolean ev_view_popup_menu (GtkWidget *widget) { gint x, y; ev_document_misc_get_pointer_position (widget, &x, &y); return ev_view_do_popup_menu (EV_VIEW (widget), x, y); } static void get_link_area (EvView *view, gint x, gint y, EvLink *link, GdkRectangle *area) { EvMappingList *link_mapping; gint page; gint x_offset = 0, y_offset = 0; x += view->scroll_x; y += view->scroll_y; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page); ev_view_get_area_from_mapping (view, page, link_mapping, link, area); } static void get_annot_area (EvView *view, gint x, gint y, EvAnnotation *annot, GdkRectangle *area) { EvMappingList *annot_mapping; gint page; gint x_offset = 0, y_offset = 0; x += view->scroll_x; y += view->scroll_y; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page); ev_view_get_area_from_mapping (view, page, annot_mapping, annot, area); } static gboolean ev_view_query_tooltip (GtkWidget *widget, gint x, gint y, gboolean keyboard_tip, GtkTooltip *tooltip) { EvView *view = EV_VIEW (widget); EvLink *link; EvAnnotation *annot; gchar *text; annot = ev_view_get_annotation_at_location (view, x, y); if (annot) { const gchar *contents; if ((contents = ev_annotation_get_contents (annot))) { GdkRectangle annot_area; get_annot_area (view, x, y, annot, &annot_area); gtk_tooltip_set_text (tooltip, contents); gtk_tooltip_set_tip_area (tooltip, &annot_area); return TRUE; } } link = ev_view_get_link_at_location (view, x, y); if (!link) return FALSE; text = tip_from_link (view, link); if (text && g_utf8_validate (text, -1, NULL)) { GdkRectangle link_area; get_link_area (view, x, y, link, &link_area); gtk_tooltip_set_text (tooltip, text); gtk_tooltip_set_tip_area (tooltip, &link_area); g_free (text); return TRUE; } g_free (text); return FALSE; } static void start_selection_for_event (EvView *view, GdkEventButton *event) { clear_selection (view); view->selection_info.start.x = event->x + view->scroll_x; view->selection_info.start.y = event->y + view->scroll_y; switch (event->type) { case GDK_2BUTTON_PRESS: view->selection_info.style = EV_SELECTION_STYLE_WORD; break; case GDK_3BUTTON_PRESS: view->selection_info.style = EV_SELECTION_STYLE_LINE; break; default: view->selection_info.style = EV_SELECTION_STYLE_GLYPH; return; } /* In case of WORD or LINE, compute selections now */ compute_selections (view, view->selection_info.style, &(view->selection_info.start), &(view->selection_info.start)); } gint _ev_view_get_caret_cursor_offset_at_doc_point (EvView *view, gint page, gdouble doc_x, gdouble doc_y) { EvRectangle *areas = NULL; guint n_areas = 0; gint offset = -1; gint first_line_offset; gint last_line_offset = -1; EvRectangle *rect; guint i; ev_page_cache_get_text_layout (view->page_cache, page, &areas, &n_areas); if (!areas) return -1; i = 0; while (i < n_areas && offset == -1) { rect = areas + i; first_line_offset = -1; while (doc_y >= rect->y1 && doc_y <= rect->y2) { if (first_line_offset == -1) { if (doc_x <= rect->x1) { /* Location is before the start of the line */ if (last_line_offset != -1) { EvRectangle *last = areas + last_line_offset; gint dx1, dx2; /* If there's a previous line, check distances */ dx1 = doc_x - last->x2; dx2 = rect->x1 - doc_x; if (dx1 < dx2) offset = last_line_offset; else offset = i; } else { offset = i; } last_line_offset = i + 1; break; } first_line_offset = i; } last_line_offset = i + 1; if (doc_x >= rect->x1 && doc_x <= rect->x2) { /* Location is inside the line. Position the caret before * or after the character, depending on whether the point * falls within the left or right half of the bounding box. */ if (doc_x <= rect->x1 + (rect->x2 - rect->x1) / 2) offset = i; else offset = i + 1; break; } i++; rect = areas + i; } if (first_line_offset == -1) i++; } if (last_line_offset == -1) return -1; if (offset == -1) offset = last_line_offset; return offset; } static gboolean position_caret_cursor_at_doc_point (EvView *view, gint page, gdouble doc_x, gdouble doc_y) { gint offset; offset = _ev_view_get_caret_cursor_offset_at_doc_point (view, page, doc_x, doc_y); if (offset == -1) return FALSE; if (view->cursor_offset != offset || view->cursor_page != page) { view->cursor_offset = offset; view->cursor_page = page; return TRUE; } return FALSE; } static gboolean position_caret_cursor_at_location (EvView *view, gdouble x, gdouble y) { gint page; gint doc_x, doc_y; if (!view->caret_enabled || view->rotation != 0) return FALSE; if (!view->page_cache) return FALSE; /* Get the offset from the doc point */ if (!get_doc_point_from_location (view, x, y, &page, &doc_x, &doc_y)) return FALSE; return position_caret_cursor_at_doc_point (view, page, doc_x, doc_y); } static gboolean position_caret_cursor_for_event (EvView *view, GdkEventButton *event, gboolean redraw) { GdkRectangle area; GdkRectangle prev_area = { 0, 0, 0, 0 }; if (redraw) get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &prev_area); if (!position_caret_cursor_at_location (view, event->x, event->y)) return FALSE; if (!get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &area)) return FALSE; view->cursor_line_offset = area.x; g_signal_emit (view, signals[SIGNAL_CURSOR_MOVED], 0, view->cursor_page, view->cursor_offset); if (redraw) { cairo_region_t *damage_region; damage_region = cairo_region_create_rectangle (&prev_area); cairo_region_union_rectangle (damage_region, &area); gdk_window_invalidate_region (gtk_widget_get_window (GTK_WIDGET (view)), damage_region, TRUE); cairo_region_destroy (damage_region); } return TRUE; } static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event) { EvView *view = EV_VIEW (widget); if (!view->document || ev_document_get_n_pages (view->document) <= 0) return FALSE; if (gtk_gesture_is_recognized (view->zoom_gesture)) return TRUE; if (!gtk_widget_has_focus (widget)) { gtk_widget_grab_focus (widget); } if (view->window_child_focus) { EvAnnotationWindow *window; window = EV_ANNOTATION_WINDOW (view->window_child_focus->window); ev_annotation_window_ungrab_focus (window); view->window_child_focus = NULL; } view->pressed_button = event->button; view->selection_info.in_drag = FALSE; if (view->adding_annot) return FALSE; if (view->scroll_info.autoscrolling) return TRUE; switch (event->button) { case 1: { EvImage *image; EvAnnotation *annot; EvFormField *field; EvMapping *link; gint page; if (event->state & GDK_CONTROL_MASK) return ev_view_synctex_backward_search (view, event->x , event->y); if (EV_IS_SELECTION (view->document) && view->selection_info.selections) { if (event->type == GDK_3BUTTON_PRESS) { start_selection_for_event (view, event); } else if (event->state & GDK_SHIFT_MASK) { GdkPoint end_point; end_point.x = event->x + view->scroll_x; end_point.y = event->y + view->scroll_y; extend_selection (view, &view->selection_info.start, &end_point); } else if (location_in_selected_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) { view->selection_info.in_drag = TRUE; } else { start_selection_for_event (view, event); if (position_caret_cursor_for_event (view, event, TRUE)) { view->cursor_blink_time = 0; ev_view_pend_cursor_blink (view); } } } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) { ev_view_handle_annotation (view, annot, event->x, event->y, event->time); } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) { ev_view_remove_all (view); ev_view_handle_form_field (view, field); } else if ((link = get_link_mapping_at_location (view, event->x, event->y, &page))){ _ev_view_set_focused_element (view, link, page); } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) && (image = ev_view_get_image_at_location (view, event->x, event->y))) { if (view->image_dnd_info.image) g_object_unref (view->image_dnd_info.image); view->image_dnd_info.image = g_object_ref (image); view->image_dnd_info.in_drag = TRUE; view->image_dnd_info.start.x = event->x + view->scroll_x; view->image_dnd_info.start.y = event->y + view->scroll_y; } else { ev_view_remove_all (view); _ev_view_set_focused_element (view, NULL, -1); if (view->synctex_result) { g_free (view->synctex_result); view->synctex_result = NULL; gtk_widget_queue_draw (widget); } if (EV_IS_SELECTION (view->document)) start_selection_for_event (view, event); if (position_caret_cursor_for_event (view, event, TRUE)) { view->cursor_blink_time = 0; ev_view_pend_cursor_blink (view); } } } return TRUE; case 2: /* use root coordinates as reference point because * scrolling changes window relative coordinates */ view->drag_info.start.x = event->x_root; view->drag_info.start.y = event->y_root; view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment); view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment); ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); ev_view_set_focused_element_at_location (view, event->x, event->y); return TRUE; case 3: view->scroll_info.start_y = event->y; ev_view_set_focused_element_at_location (view, event->x, event->y); return ev_view_do_popup_menu (view, event->x, event->y); } return FALSE; } static void ev_view_remove_all (EvView *view) { gtk_container_foreach (GTK_CONTAINER (view), (GtkCallback) gtk_widget_destroy, NULL); GList *children, *child; children = gtk_container_get_children (GTK_CONTAINER (view)); for (child = children; child && child->data; child = g_list_next (child)) { gtk_container_remove (GTK_CONTAINER (view), GTK_WIDGET (child->data)); } g_list_free (children); } /*** Drag and Drop ***/ static void ev_view_drag_data_get (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time) { EvView *view = EV_VIEW (widget); switch (info) { case TARGET_DND_TEXT: if (EV_IS_SELECTION (view->document) && view->selection_info.selections) { gchar *text; text = get_selected_text (view); gtk_selection_data_set_text (selection_data, text, strlen (text)); g_free (text); } break; case TARGET_DND_IMAGE: if (view->image_dnd_info.image) { GdkPixbuf *pixbuf; ev_document_doc_mutex_lock (); pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document), view->image_dnd_info.image); ev_document_doc_mutex_unlock (); gtk_selection_data_set_pixbuf (selection_data, pixbuf); g_object_unref (pixbuf); } break; case TARGET_DND_URI: if (view->image_dnd_info.image) { GdkPixbuf *pixbuf; const gchar *tmp_uri; gchar *uris[2]; ev_document_doc_mutex_lock (); pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document), view->image_dnd_info.image); ev_document_doc_mutex_unlock (); tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf); g_object_unref (pixbuf); uris[0] = (gchar *)tmp_uri; uris[1] = NULL; gtk_selection_data_set_uris (selection_data, uris); } } } static gboolean ev_view_drag_motion (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { if (gtk_drag_get_source_widget (context) == widget) gdk_drag_status (context, 0, time); else gdk_drag_status (context, gdk_drag_context_get_suggested_action (context), time); return TRUE; } static gboolean selection_update_idle_cb (EvView *view) { compute_selections (view, view->selection_info.style, &view->selection_info.start, &view->motion); view->selection_update_id = 0; return FALSE; } static gboolean selection_scroll_timeout_cb (EvView *view) { gint x, y, shift = 0; GtkWidget *widget = GTK_WIDGET (view); GtkAllocation allocation; gtk_widget_get_allocation (widget, &allocation); ev_document_misc_get_pointer_position (widget, &x, &y); if (y > allocation.height) { shift = (y - allocation.height) / 2; } else if (y < 0) { shift = y / 2; } if (shift) gtk_adjustment_set_value (view->vadjustment, CLAMP (gtk_adjustment_get_value (view->vadjustment) + shift, gtk_adjustment_get_lower (view->vadjustment), gtk_adjustment_get_upper (view->vadjustment) - gtk_adjustment_get_page_size (view->vadjustment))); if (x > allocation.width) { shift = (x - allocation.width) / 2; } else if (x < 0) { shift = x / 2; } if (shift) gtk_adjustment_set_value (view->hadjustment, CLAMP (gtk_adjustment_get_value (view->hadjustment) + shift, gtk_adjustment_get_lower (view->hadjustment), gtk_adjustment_get_upper (view->hadjustment) - gtk_adjustment_get_page_size (view->hadjustment))); return TRUE; } static gboolean ev_view_drag_update_momentum (EvView *view) { int i; if (!view->drag_info.in_drag) return FALSE; for (i = DRAG_HISTORY - 1; i > 0; i--) { view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x; view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y; } /* Momentum is a moving average of 10ms granularity over * the last 100ms with each 10ms stored in buffer. */ view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x); view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y); return TRUE; } static gboolean ev_view_scroll_drag_release (EvView *view) { gdouble dhadj_value, dvadj_value; gdouble oldhadjustment, oldvadjustment; gdouble h_page_size, v_page_size; gdouble h_upper, v_upper; GtkAllocation allocation; view->drag_info.momentum.x /= 1.2; view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); h_page_size = gtk_adjustment_get_page_size (view->hadjustment); v_page_size = gtk_adjustment_get_page_size (view->vadjustment); dhadj_value = h_page_size * (gdouble)view->drag_info.momentum.x / allocation.width; dvadj_value = v_page_size * (gdouble)view->drag_info.momentum.y / allocation.height; oldhadjustment = gtk_adjustment_get_value (view->hadjustment); oldvadjustment = gtk_adjustment_get_value (view->vadjustment); h_upper = gtk_adjustment_get_upper (view->hadjustment); v_upper = gtk_adjustment_get_upper (view->vadjustment); /* When we reach the edges, we need either to absorb some momentum and bounce by * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */ if (((oldhadjustment + dhadj_value) > (h_upper - h_page_size)) || ((oldhadjustment + dhadj_value) < 0)) view->drag_info.momentum.x = 0; if (((oldvadjustment + dvadj_value) > (v_upper - v_page_size)) || ((oldvadjustment + dvadj_value) < 0)) view->drag_info.momentum.y = 0; gtk_adjustment_set_value (view->hadjustment, MIN (oldhadjustment + dhadj_value, h_upper - h_page_size)); gtk_adjustment_set_value (view->vadjustment, MIN (oldvadjustment + dvadj_value, v_upper - v_page_size)); if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) && ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1))) return FALSE; else return TRUE; } static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event) { EvView *view = EV_VIEW (widget); GdkWindow *bin_window; gint x, y; if (!view->document) return FALSE; if (gtk_gesture_is_recognized (view->zoom_gesture)) return TRUE; bin_window = gtk_widget_get_window (widget); if (event->is_hint || event->window != bin_window) { ev_document_misc_get_pointer_position (widget, &x, &y); } else { x = event->x; y = event->y; } if (view->scroll_info.autoscrolling) { view->scroll_info.last_y = y; return TRUE; } if (view->selection_info.in_drag) { if (gtk_drag_check_threshold (widget, view->selection_info.start.x, view->selection_info.start.y, x, y)) { GtkTargetList *target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT); gtk_drag_begin_with_coordinates (widget, target_list, GDK_ACTION_COPY, 1, (GdkEvent *)event, event->x, event->y); view->selection_info.in_drag = FALSE; gtk_target_list_unref (target_list); return TRUE; } } else if (view->image_dnd_info.in_drag) { if (gtk_drag_check_threshold (widget, view->selection_info.start.x, view->selection_info.start.y, x, y)) { GtkTargetList *target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI); gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE); gtk_drag_begin_with_coordinates (widget, target_list, GDK_ACTION_COPY, 1, (GdkEvent *)event, event->x, event->y); view->image_dnd_info.in_drag = FALSE; gtk_target_list_unref (target_list); return TRUE; } } switch (view->pressed_button) { case 1: /* For the Atril 0.4.x release, we limit selection to un-rotated * documents only. */ if (view->rotation != 0) return FALSE; /* Schedule timeout to scroll during selection and additionally * scroll once to allow arbitrary speed. */ if (!view->selection_scroll_id) view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view); else selection_scroll_timeout_cb (view); view->motion.x = x + view->scroll_x; view->motion.y = y + view->scroll_y; /* Queue an idle to handle the motion. We do this because * handling any selection events in the motion could be slower * than new motion events reach us. We always put it in the * idle to make sure we catch up and don't visibly lag the * mouse. */ if (!view->selection_update_id) view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view); return TRUE; case 2: if (!view->drag_info.in_drag) { gboolean start; int i; start = gtk_drag_check_threshold (widget, view->drag_info.start.x, view->drag_info.start.y, event->x_root, event->y_root); view->drag_info.in_drag = start; view->drag_info.drag_timeout_id = g_timeout_add (10, (GSourceFunc)ev_view_drag_update_momentum, view); /* Set 100 to choose how long it takes to build up momentum */ /* Clear out previous momentum info: */ for (i = 0; i < DRAG_HISTORY; i++) { view->drag_info.buffer[i].x = event->x; view->drag_info.buffer[i].y = event->y; } view->drag_info.momentum.x = 0; view->drag_info.momentum.y = 0; } if (view->drag_info.in_drag) { int dx, dy; gdouble dhadj_value, dvadj_value; GtkAllocation allocation; view->drag_info.buffer[0].x = event->x; view->drag_info.buffer[0].y = event->y; dx = event->x_root - view->drag_info.start.x; dy = event->y_root - view->drag_info.start.y; gtk_widget_get_allocation (widget, &allocation); dhadj_value = gtk_adjustment_get_page_size (view->hadjustment) * (gdouble)dx / allocation.width; dvadj_value = gtk_adjustment_get_page_size (view->vadjustment) * (gdouble)dy / allocation.height; /* clamp scrolling to visible area */ gtk_adjustment_set_value (view->hadjustment, MIN (view->drag_info.hadj - dhadj_value, gtk_adjustment_get_upper (view->hadjustment) - gtk_adjustment_get_page_size (view->hadjustment))); gtk_adjustment_set_value (view->vadjustment, MIN (view->drag_info.vadj - dvadj_value, gtk_adjustment_get_upper (view->vadjustment) - gtk_adjustment_get_page_size (view->vadjustment))); return TRUE; } break; default: ev_view_handle_cursor_over_xy (view, x, y); } return FALSE; } static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event) { EvView *view = EV_VIEW (widget); EvLink *link = NULL; view->image_dnd_info.in_drag = FALSE; if (gtk_gesture_is_recognized (view->zoom_gesture)) return TRUE; if (view->scroll_info.autoscrolling) { ev_view_autoscroll_stop (view); view->pressed_button = -1; return TRUE; } if (view->pressed_button == 1 && event->state & GDK_CONTROL_MASK) { view->pressed_button = -1; return TRUE; } if (view->drag_info.in_drag) { view->drag_info.release_timeout_id = g_timeout_add (20, (GSourceFunc)ev_view_scroll_drag_release, view); } if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) { link = ev_view_get_link_at_location (view, event->x, event->y); } view->drag_info.in_drag = FALSE; if (view->adding_annot && view->pressed_button == 1) { view->adding_annot = FALSE; ev_view_handle_cursor_over_xy (view, event->x, event->y); view->pressed_button = -1; ev_view_create_annotation (view, view->adding_annot_type, event->x + view->scroll_x, event->y + view->scroll_y); return FALSE; } if (view->pressed_button == 2) { ev_view_handle_cursor_over_xy (view, event->x, event->y); } view->pressed_button = -1; if (view->selection_scroll_id) { g_source_remove (view->selection_scroll_id); view->selection_scroll_id = 0; } if (view->selection_update_id) { g_source_remove (view->selection_update_id); view->selection_update_id = 0; } if (view->selection_info.selections) { clear_link_selected (view); ev_view_update_primary_selection (view); position_caret_cursor_for_event (view, event, FALSE); if (view->selection_info.in_drag) clear_selection (view); view->selection_info.in_drag = FALSE; } else if (link) { if (event->button == 2) { EvLinkAction *action; EvLinkActionType type; action = ev_link_get_action (link); if (!action) return FALSE; type = ev_link_action_get_action_type (action); if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) { g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action); } } else { ev_view_handle_link (view, link); } } return FALSE; } static gboolean ev_view_forward_key_event_to_focused_child (EvView *view, GdkEventKey *event) { GtkWidget *child_widget = NULL; GdkEventKey *new_event; gboolean handled; if (view->window_child_focus) { child_widget = view->window_child_focus->window; } else if (view->children) { EvViewChild *child = (EvViewChild *)view->children->data; child_widget = child->widget; } else { return FALSE; } new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event); g_object_unref (new_event->window); new_event->window = gtk_widget_get_window (child_widget); if (new_event->window) g_object_ref (new_event->window); gtk_widget_realize (child_widget); handled = gtk_widget_event (child_widget, (GdkEvent *)new_event); gdk_event_free ((GdkEvent *)new_event); return handled; } static gint go_to_next_page (EvView *view, gint page) { int n_pages; gboolean dual_page; if (!view->document) return -1; n_pages = ev_document_get_n_pages (view->document); dual_page = is_dual_page (view, NULL); page += dual_page ? 2 : 1; if (page < n_pages) return page; if (dual_page && page == n_pages) return page - 1; return -1; } static gint go_to_previous_page (EvView *view, gint page) { gboolean dual_page; if (!view->document) return -1; dual_page = is_dual_page (view, NULL); page -= dual_page ? 2 : 1; if (page >= 0) return page; if (dual_page && page == -1) return 0; return -1; } static gboolean cursor_go_to_page_start (EvView *view) { view->cursor_offset = 0; return TRUE; } static gboolean cursor_go_to_page_end (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; view->cursor_offset = n_attrs; return TRUE; } static gboolean cursor_go_to_next_page (EvView *view) { gint new_page; new_page = go_to_next_page (view, view->cursor_page); if (new_page != -1) { view->cursor_page = new_page; return cursor_go_to_page_start (view); } return FALSE; } static gboolean cursor_go_to_previous_page (EvView *view) { gint new_page; new_page = go_to_previous_page (view, view->cursor_page); if (new_page != -1) { view->cursor_page = new_page; return cursor_go_to_page_end (view); } return FALSE; } static gboolean cursor_backward_char (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; if (view->cursor_offset == 0) return cursor_go_to_previous_page (view); do { view->cursor_offset--; } while (view->cursor_offset >= 0 && !log_attrs[view->cursor_offset].is_cursor_position); return TRUE; } static gboolean cursor_forward_char (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; if (view->cursor_offset >= n_attrs) return cursor_go_to_next_page (view); do { view->cursor_offset++; } while (view->cursor_offset <= n_attrs && !log_attrs[view->cursor_offset].is_cursor_position); return TRUE; } static gboolean cursor_backward_word_start (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; gint i, j; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; /* Skip current word starts */ for (i = view->cursor_offset; i >= 0 && log_attrs[i].is_word_start; i--); if (i <= 0) { if (cursor_go_to_previous_page (view)) return cursor_backward_word_start (view); return FALSE; } /* Move to the beginning of the word */ for (j = i; j >= 0 && !log_attrs[j].is_word_start; j--); view->cursor_offset = MAX (0, j); return TRUE; } static gboolean cursor_forward_word_end (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; gint i, j; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; /* Skip current current word ends */ for (i = view->cursor_offset; i < n_attrs && log_attrs[i].is_word_end; i++); if (i >= n_attrs) { if (cursor_go_to_next_page (view)) return cursor_forward_word_end (view); return FALSE; } /* Move to the end of the word. */ for (j = i; j < n_attrs && !log_attrs[j].is_word_end; j++); view->cursor_offset = MIN (j, n_attrs); return TRUE; } static gboolean cursor_go_to_line_start (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; gint i; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; for (i = view->cursor_offset; i >= 0 && !log_attrs[i].is_mandatory_break; i--); view->cursor_offset = MAX (0, i); return TRUE; } static gboolean cursor_backward_line (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; if (!cursor_go_to_line_start (view)) return FALSE; if (view->cursor_offset == 0) return cursor_go_to_previous_page (view); ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); do { view->cursor_offset--; } while (view->cursor_offset >= 0 && !log_attrs[view->cursor_offset].is_mandatory_break); view->cursor_offset = MAX (0, view->cursor_offset); return TRUE; } static gboolean cursor_go_to_line_end (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; gint i; if (!view->page_cache) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (!log_attrs) return FALSE; for (i = view->cursor_offset + 1; i <= n_attrs && !log_attrs[i].is_mandatory_break; i++); view->cursor_offset = MIN (i, n_attrs); if (view->cursor_offset == n_attrs) return TRUE; do { view->cursor_offset--; } while (view->cursor_offset >= 0 && !log_attrs[view->cursor_offset].is_cursor_position); return TRUE; } static gboolean cursor_forward_line (EvView *view) { PangoLogAttr *log_attrs = NULL; gulong n_attrs; if (!cursor_go_to_line_end (view)) return FALSE; ev_page_cache_get_text_log_attrs (view->page_cache, view->cursor_page, &log_attrs, &n_attrs); if (view->cursor_offset == n_attrs) return cursor_go_to_next_page (view); do { view->cursor_offset++; } while (view->cursor_offset <= n_attrs && !log_attrs[view->cursor_offset].is_cursor_position); return TRUE; } static void extend_selection (EvView *view, GdkPoint *start_point, GdkPoint *end_point) { if (!view->selection_info.selections) { view->selection_info.start.x = start_point->x; view->selection_info.start.y = start_point->y; } compute_selections (view, EV_SELECTION_STYLE_GLYPH, &(view->selection_info.start), end_point); } static gboolean cursor_clear_selection (EvView *view, gboolean forward) { GList *l; EvViewSelection *selection; cairo_rectangle_int_t rect; gint doc_x, doc_y; /* When clearing the selection, move the cursor to * the limits of the selection region. */ if (!view->selection_info.selections) return FALSE; l = forward ? g_list_last (view->selection_info.selections) : view->selection_info.selections; selection = (EvViewSelection *)l->data; if (!selection->covered_region || cairo_region_is_empty (selection->covered_region)) return FALSE; cairo_region_get_rectangle (selection->covered_region, forward ? cairo_region_num_rectangles (selection->covered_region) - 1 : 0, &rect); if (!get_doc_point_from_offset (view, selection->page, forward ? rect.x + rect.width : rect.x, rect.y + (rect.height / 2), &doc_x, &doc_y)) return FALSE; position_caret_cursor_at_doc_point (view, selection->page, doc_x, doc_y); return TRUE; } static gboolean ev_view_move_cursor (EvView *view, GtkMovementStep step, gint count, gboolean extend_selections) { GdkRectangle rect; GdkRectangle prev_rect; gint prev_offset; gint prev_page; cairo_region_t *damage_region; gboolean clear_selections = FALSE; const gboolean forward = count >= 0; if (!view->caret_enabled || view->rotation != 0) return FALSE; view->key_binding_handled = TRUE; view->cursor_blink_time = 0; prev_offset = view->cursor_offset; prev_page = view->cursor_page; clear_selections = !extend_selections && view->selection_info.selections != NULL; switch (step) { case GTK_MOVEMENT_VISUAL_POSITIONS: if (!clear_selections || !cursor_clear_selection (view, count > 0)) { while (count > 0) { cursor_forward_char (view); count--; } while (count < 0) { cursor_backward_char (view); count++; } } break; case GTK_MOVEMENT_WORDS: while (count > 0) { cursor_forward_word_end (view); count--; } while (count < 0) { cursor_backward_word_start (view); count++; } break; case GTK_MOVEMENT_DISPLAY_LINES: while (count > 0) { cursor_forward_line (view); count--; } while (count < 0) { cursor_backward_line (view); count++; } break; case GTK_MOVEMENT_DISPLAY_LINE_ENDS: if (count > 0) cursor_go_to_line_end (view); else if (count < 0) cursor_go_to_line_start (view); break; default: g_assert_not_reached (); } ev_view_pend_cursor_blink (view); /* Notify the user that it was not possible to move the caret cursor */ if (!clear_selections && prev_offset == view->cursor_offset && prev_page == view->cursor_page) { gtk_widget_error_bell (GTK_WIDGET (view)); return TRUE; } /* Scroll to make the caret visible */ if (!get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &rect)) return TRUE; if (step == GTK_MOVEMENT_DISPLAY_LINES) { const gint prev_cursor_offset = view->cursor_offset; position_caret_cursor_at_location (view, MAX (rect.x, view->cursor_line_offset), rect.y + (rect.height / 2)); /* Make sure we didn't move the cursor in the wrong direction * in case the visual order isn't the same as the logical one, * in order to avoid cursor movement loops */ if ((forward && prev_cursor_offset > view->cursor_offset) || (!forward && prev_cursor_offset < view->cursor_offset)) { view->cursor_offset = prev_cursor_offset; } if (!clear_selections && prev_offset == view->cursor_offset && prev_page == view->cursor_page) { gtk_widget_error_bell (GTK_WIDGET (view)); return TRUE; } if (!get_caret_cursor_area (view, view->cursor_page, view->cursor_offset, &rect)) return TRUE; } else { view->cursor_line_offset = rect.x; } damage_region = cairo_region_create_rectangle (&rect); if (get_caret_cursor_area (view, prev_page, prev_offset, &prev_rect)) cairo_region_union_rectangle (damage_region, &prev_rect); rect.x += view->scroll_x; rect.y += view->scroll_y; ev_document_model_set_page (view->model, view->cursor_page); ensure_rectangle_is_visible (view, &rect); g_signal_emit (view, signals[SIGNAL_CURSOR_MOVED], 0, view->cursor_page, view->cursor_offset); gdk_window_invalidate_region (gtk_widget_get_window (GTK_WIDGET (view)), damage_region, TRUE); cairo_region_destroy (damage_region); /* Select text */ if (extend_selections && EV_IS_SELECTION (view->document)) { GdkPoint start_point, end_point; start_point.x = prev_rect.x + view->scroll_x; start_point.y = prev_rect.y + (prev_rect.height / 2) + view->scroll_y; end_point.x = rect.x; end_point.y = rect.y + rect.height / 2; extend_selection (view, &start_point, &end_point); } else if (clear_selections) clear_selection (view); return TRUE; } static gboolean ev_view_key_press_event (GtkWidget *widget, GdkEventKey *event) { EvView *view = EV_VIEW (widget); gboolean retval; if (!view->document) return FALSE; if (!gtk_widget_has_focus (widget)) return ev_view_forward_key_event_to_focused_child (view, event); /* I expected GTK+ do this for me, but it doesn't cancel * the propagation of bindings handled for the same binding set */ view->key_binding_handled = FALSE; retval = gtk_bindings_activate_event (G_OBJECT (widget), event); view->key_binding_handled = FALSE; return retval; } static gint ev_view_focus_in (GtkWidget *widget, GdkEventFocus *event) { EvView *view = EV_VIEW (widget); if (view->pixbuf_cache) ev_pixbuf_cache_style_changed (view->pixbuf_cache); ev_view_check_cursor_blink (view); gtk_widget_queue_draw (widget); return FALSE; } static gint ev_view_focus_out (GtkWidget *widget, GdkEventFocus *event) { EvView *view = EV_VIEW (widget); if (view->pixbuf_cache) ev_pixbuf_cache_style_changed (view->pixbuf_cache); ev_view_check_cursor_blink (view); gtk_widget_queue_draw (widget); return FALSE; } static gboolean ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing *event) { EvView *view = EV_VIEW (widget); if (view->cursor != EV_VIEW_CURSOR_NORMAL) ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); return FALSE; } static gboolean ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing *event) { EvView *view = EV_VIEW (widget); ev_view_handle_cursor_over_xy (view, event->x, event->y); return FALSE; } static void ev_view_style_updated (GtkWidget *widget) { if (EV_VIEW (widget)->pixbuf_cache) ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); GTK_WIDGET_CLASS (ev_view_parent_class)->style_updated (widget); } /*** Drawing ***/ static void draw_rubberband (EvView *view, cairo_t *cr, const GdkRectangle *rect, gdouble alpha) { GtkStyleContext *context; GdkRGBA color; context = gtk_widget_get_style_context (GTK_WIDGET (view)); gtk_style_context_save (context); gtk_style_context_get_background_color (context, GTK_STATE_FLAG_SELECTED, &color); gtk_style_context_restore (context); cairo_save (cr); cairo_set_source_rgba (cr, color.red, color.green, color.blue, alpha); cairo_rectangle (cr, rect->x - view->scroll_x, rect->y - view->scroll_y, rect->width, rect->height); cairo_fill_preserve (cr); cairo_set_line_width (cr, 0.5); cairo_set_source_rgb (cr, color.red, color.green, color.blue); cairo_stroke (cr); cairo_restore (cr); } static void highlight_find_results (EvView *view, cairo_t *cr, int page) { gint i, n_results = 0; n_results = ev_view_find_get_n_results (view, page); for (i = 0; i < n_results; i++) { EvRectangle *rectangle; GdkRectangle view_rectangle; gdouble alpha; if (i == view->find_result && page == view->current_page) { alpha = 0.6; } else { alpha = 0.3; } rectangle = ev_view_find_get_result (view, page, i); _ev_view_transform_doc_rect_to_view_rect (view, page, rectangle, &view_rectangle); draw_rubberband (view, cr, &view_rectangle, alpha); } } static void highlight_forward_search_results (EvView *view, cairo_t *cr, int page) { GdkRectangle rect; EvMapping *mapping = view->synctex_result; if (GPOINTER_TO_INT (mapping->data) != page) return; _ev_view_transform_doc_rect_to_view_rect (view, page, &mapping->area, &rect); cairo_save (cr); cairo_set_source_rgb (cr, 1., 0., 0.); cairo_rectangle (cr, rect.x - view->scroll_x, rect.y - view->scroll_y, rect.width, rect.height); cairo_stroke (cr); cairo_restore (cr); } static void draw_surface (cairo_t *cr, cairo_surface_t *surface, gint x, gint y, gint offset_x, gint offset_y, gint target_width, gint target_height) { gdouble width, height; gdouble device_scale_x = 1, device_scale_y = 1; cairo_surface_get_device_scale (surface, &device_scale_x, &device_scale_y); width = cairo_image_surface_get_width (surface) / device_scale_x; height = cairo_image_surface_get_height (surface) / device_scale_y; cairo_save (cr); cairo_translate (cr, x, y); if (width != target_width || height != target_height) { gdouble scale_x, scale_y; scale_x = (gdouble)target_width / width; scale_y = (gdouble)target_height / height; cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_FAST); cairo_scale (cr, scale_x, scale_y); offset_x /= scale_x; offset_y /= scale_y; } cairo_surface_set_device_offset (surface, offset_x * device_scale_x, offset_y * device_scale_y); cairo_set_source_surface (cr, surface, 0, 0); cairo_paint (cr); cairo_restore (cr); } void _ev_view_get_selection_colors (EvView *view, GdkRGBA *bg_color, GdkRGBA *fg_color) { GtkWidget *widget = GTK_WIDGET (view); GtkStateFlags state; GtkStyleContext *context; state = gtk_widget_has_focus (widget) ? GTK_STATE_FLAG_SELECTED : GTK_STATE_FLAG_ACTIVE; context = gtk_widget_get_style_context (widget); gtk_style_context_save (context); if (bg_color) gtk_style_context_get_background_color (context, state, bg_color); if (fg_color) gtk_style_context_get_color (context, state, fg_color); gtk_style_context_restore (context); } static void draw_selection_region (cairo_t *cr, cairo_region_t *region, GdkRGBA *color, gint x, gint y, gdouble scale_x, gdouble scale_y) { cairo_save (cr); cairo_translate (cr, x, y); cairo_scale (cr, scale_x, scale_y); gdk_cairo_region (cr, region); cairo_set_source_rgb (cr, color->red, color->green, color->blue); cairo_set_operator (cr, CAIRO_OPERATOR_MULTIPLY); cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); cairo_fill (cr); cairo_restore (cr); } static void draw_one_page (EvView *view, gint page, cairo_t *cr, GdkRectangle *page_area, GtkBorder *border, GdkRectangle *expose_area, gboolean *page_ready) { GtkStyleContext *context; GdkRectangle overlap; GdkRectangle real_page_area; gint current_page; g_assert (view->document); if (! gdk_rectangle_intersect (page_area, expose_area, &overlap)) return; /* Render the document itself */ real_page_area = *page_area; real_page_area.x += border->left; real_page_area.y += border->top; real_page_area.width -= (border->left + border->right); real_page_area.height -= (border->top + border->bottom); *page_ready = TRUE; context = gtk_widget_get_style_context (GTK_WIDGET (view)); current_page = ev_document_model_get_page (view->model); gtk_style_context_save (context); gtk_style_context_add_class (context, EV_STYLE_CLASS_DOCUMENT_PAGE); if (ev_document_model_get_inverted_colors (view->model)) gtk_style_context_add_class (context, EV_STYLE_CLASS_INVERTED); if (view->continuous && page == current_page) gtk_style_context_set_state (context, GTK_STATE_FLAG_ACTIVE); gtk_render_background (context, cr, page_area->x, page_area->y, page_area->width, page_area->height); gtk_render_frame (context, cr, page_area->x, page_area->y, page_area->width, page_area->height); gtk_style_context_restore (context); if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) { gint width, height; cairo_surface_t *page_surface = NULL; cairo_surface_t *selection_surface = NULL; gint offset_x, offset_y; cairo_region_t *region = NULL; page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page); if (!page_surface) { if (page == current_page) ev_view_set_loading (view, TRUE); *page_ready = FALSE; return; } if (page == current_page) ev_view_set_loading (view, FALSE); ev_view_get_page_size (view, page, &width, &height); offset_x = overlap.x - real_page_area.x; offset_y = overlap.y - real_page_area.y; draw_surface (cr, page_surface, overlap.x, overlap.y, offset_x, offset_y, width, height); /* Get the selection pixbuf iff we have something to draw */ if (!find_selection_for_page (view, page)) return; selection_surface = ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, page, view->scale); if (selection_surface) { draw_surface (cr, selection_surface, overlap.x, overlap.y, offset_x, offset_y, width, height); return; } region = ev_pixbuf_cache_get_selection_region (view->pixbuf_cache, page, view->scale); if (region) { double scale_x, scale_y; GdkRGBA color; double device_scale_x = 1, device_scale_y = 1; scale_x = (gdouble)width / cairo_image_surface_get_width (page_surface); scale_y = (gdouble)height / cairo_image_surface_get_height (page_surface); cairo_surface_get_device_scale (page_surface, &device_scale_x, &device_scale_y); scale_x *= device_scale_x; scale_y *= device_scale_y; _ev_view_get_selection_colors (view, &color, NULL); draw_selection_region (cr, region, &color, real_page_area.x, real_page_area.y, scale_x, scale_y); } } } /*** GObject functions ***/ static void ev_view_finalize (GObject *object) { EvView *view = EV_VIEW (object); if (view->selection_info.selections) { g_list_free_full (view->selection_info.selections, (GDestroyNotify)selection_free); view->selection_info.selections = NULL; } clear_link_selected (view); if (view->synctex_result) { g_free (view->synctex_result); view->synctex_result = NULL; } if (view->image_dnd_info.image) g_object_unref (view->image_dnd_info.image); view->image_dnd_info.image = NULL; g_object_unref (view->zoom_gesture); G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); } static void ev_view_dispose (GObject *object) { EvView *view = EV_VIEW (object); if (view->model) { g_object_unref (view->model); view->model = NULL; } if (view->pixbuf_cache) { g_object_unref (view->pixbuf_cache); view->pixbuf_cache = NULL; } if (view->document) { g_object_unref (view->document); view->document = NULL; } if (view->page_cache) { g_object_unref (view->page_cache); view->page_cache = NULL; } ev_view_window_children_free (view); if (view->selection_scroll_id) { g_source_remove (view->selection_scroll_id); view->selection_scroll_id = 0; } if (view->selection_update_id) { g_source_remove (view->selection_update_id); view->selection_update_id = 0; } if (view->scroll_info.timeout_id) { g_source_remove (view->scroll_info.timeout_id); view->scroll_info.timeout_id = 0; } if (view->drag_info.drag_timeout_id) { g_source_remove (view->drag_info.drag_timeout_id); view->drag_info.drag_timeout_id = 0; } if (view->drag_info.release_timeout_id) { g_source_remove (view->drag_info.release_timeout_id); view->drag_info.release_timeout_id = 0; } if (view->cursor_blink_timeout_id) { g_source_remove (view->cursor_blink_timeout_id); view->cursor_blink_timeout_id = 0; } g_clear_object(&view->accessible); G_OBJECT_CLASS (ev_view_parent_class)->dispose (object); } static void ev_view_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { EvView *view = EV_VIEW (object); switch (prop_id) { case PROP_IS_LOADING: g_value_set_boolean (value, view->loading); break; case PROP_HADJUSTMENT: g_value_set_object (value, view->hadjustment); break; case PROP_VADJUSTMENT: g_value_set_object (value, view->vadjustment); break; case PROP_HSCROLL_POLICY: g_value_set_enum (value, view->hscroll_policy); break; case PROP_VSCROLL_POLICY: g_value_set_enum (value, view->vscroll_policy); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void ev_view_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { EvView *view = EV_VIEW (object); switch (prop_id) { case PROP_IS_LOADING: ev_view_set_loading (view, g_value_get_boolean (value)); break; case PROP_HADJUSTMENT: set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, (GtkAdjustment *) g_value_get_object (value)); break; case PROP_VADJUSTMENT: set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, (GtkAdjustment *) g_value_get_object (value)); break; case PROP_HSCROLL_POLICY: view->hscroll_policy = g_value_get_enum (value); gtk_widget_queue_resize (GTK_WIDGET (view)); break; case PROP_VSCROLL_POLICY: view->vscroll_policy = g_value_get_enum (value); gtk_widget_queue_resize (GTK_WIDGET (view)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* Accessibility */ static AtkObject * ev_view_get_accessible (GtkWidget *widget) { EvView *view = EV_VIEW (widget); if (!view->accessible) view->accessible = ev_view_accessible_new (widget); return view->accessible; } /* GtkContainer */ static void ev_view_remove (GtkContainer *container, GtkWidget *widget) { EvView *view = EV_VIEW (container); GList *tmp_list = view->children; EvViewChild *child; while (tmp_list) { child = tmp_list->data; if (child->widget == widget) { gtk_widget_unparent (widget); view->children = g_list_remove_link (view->children, tmp_list); g_list_free_1 (tmp_list); g_slice_free (EvViewChild, child); return; } tmp_list = tmp_list->next; } } static void ev_view_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data) { EvView *view = EV_VIEW (container); GList *tmp_list = view->children; EvViewChild *child; while (tmp_list) { child = tmp_list->data; tmp_list = tmp_list->next; (* callback) (child->widget, callback_data); } } static void pan_gesture_pan_cb (GtkGesturePan *gesture, GtkPanDirection direction, gdouble offset, EvView *view) { GtkAllocation allocation; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); if (view->continuous || allocation.width < view->requisition.width) { gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED); return; } #define PAN_ACTION_DISTANCE 200 view->pan_action = EV_PAN_ACTION_NONE; gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED); if (offset > PAN_ACTION_DISTANCE) { if (direction == GTK_PAN_DIRECTION_LEFT || gtk_widget_get_direction (GTK_WIDGET (view)) == GTK_TEXT_DIR_RTL) view->pan_action = EV_PAN_ACTION_NEXT; else view->pan_action = EV_PAN_ACTION_PREV; } #undef PAN_ACTION_DISTANCE } static void pan_gesture_end_cb (GtkGesture *gesture, GdkEventSequence *sequence, EvView *view) { if (!gtk_gesture_handles_sequence (gesture, sequence)) return; if (view->pan_action == EV_PAN_ACTION_PREV) ev_view_previous_page (view); else if (view->pan_action == EV_PAN_ACTION_NEXT) ev_view_next_page (view); view->pan_action = EV_PAN_ACTION_NONE; } static void ev_view_hierarchy_changed (GtkWidget *widget, GtkWidget *previous_toplevel) { GtkWidget *parent = gtk_widget_get_parent (widget); EvView *view = EV_VIEW (widget); if (parent && !view->pan_gesture) { view->pan_gesture = gtk_gesture_pan_new (parent, GTK_ORIENTATION_HORIZONTAL); g_signal_connect (view->pan_gesture, "pan", G_CALLBACK (pan_gesture_pan_cb), widget); g_signal_connect (view->pan_gesture, "end", G_CALLBACK (pan_gesture_end_cb), widget); gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (view->pan_gesture), TRUE); gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (view->pan_gesture), GTK_PHASE_CAPTURE); } else if (!parent && view->pan_gesture) { g_clear_object (&view->pan_gesture); } } static void ev_view_parent_set (GtkWidget *widget, GtkWidget *previous_parent) { GtkWidget *parent; parent = gtk_widget_get_parent (widget); g_assert (!parent || GTK_IS_SCROLLED_WINDOW (parent)); } static void add_move_binding_keypad (GtkBindingSet *binding_set, guint keyval, GdkModifierType modifiers, GtkMovementStep step, gint count) { guint keypad_keyval = keyval - GDK_KEY_Left + GDK_KEY_KP_Left; gtk_binding_entry_add_signal (binding_set, keyval, modifiers, "move-cursor", 3, GTK_TYPE_MOVEMENT_STEP, step, G_TYPE_INT, count, G_TYPE_BOOLEAN, FALSE); gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers, "move-cursor", 3, GTK_TYPE_MOVEMENT_STEP, step, G_TYPE_INT, count, G_TYPE_BOOLEAN, FALSE); /* Selection-extending version */ gtk_binding_entry_add_signal (binding_set, keyval, modifiers | GDK_SHIFT_MASK, "move-cursor", 3, GTK_TYPE_MOVEMENT_STEP, step, G_TYPE_INT, count, G_TYPE_BOOLEAN, TRUE); gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers | GDK_SHIFT_MASK, "move-cursor", 3, GTK_TYPE_MOVEMENT_STEP, step, G_TYPE_INT, count, G_TYPE_BOOLEAN, TRUE); } static void ev_view_class_init (EvViewClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class); GtkBindingSet *binding_set; object_class->get_property = ev_view_get_property; object_class->set_property = ev_view_set_property; object_class->finalize = ev_view_finalize; widget_class->realize = ev_view_realize; widget_class->draw = ev_view_draw; widget_class->button_press_event = ev_view_button_press_event; widget_class->motion_notify_event = ev_view_motion_notify_event; widget_class->button_release_event = ev_view_button_release_event; widget_class->key_press_event = ev_view_key_press_event; widget_class->focus_in_event = ev_view_focus_in; widget_class->focus_out_event = ev_view_focus_out; widget_class->get_accessible = ev_view_get_accessible; widget_class->get_preferred_width = ev_view_get_preferred_width; widget_class->get_preferred_height = ev_view_get_preferred_height; widget_class->size_allocate = ev_view_size_allocate; widget_class->scroll_event = ev_view_scroll_event; widget_class->enter_notify_event = ev_view_enter_notify_event; widget_class->leave_notify_event = ev_view_leave_notify_event; widget_class->style_updated = ev_view_style_updated; widget_class->drag_data_get = ev_view_drag_data_get; widget_class->drag_motion = ev_view_drag_motion; widget_class->popup_menu = ev_view_popup_menu; widget_class->query_tooltip = ev_view_query_tooltip; widget_class->parent_set = ev_view_parent_set; widget_class->hierarchy_changed = ev_view_hierarchy_changed; object_class->dispose = ev_view_dispose; gtk_widget_class_set_css_name (widget_class, "evview"); container_class->remove = ev_view_remove; container_class->forall = ev_view_forall; class->scroll = ev_view_scroll_internal; class->move_cursor = ev_view_move_cursor; g_object_class_install_property (object_class, PROP_IS_LOADING, g_param_spec_boolean ("is-loading", "Is Loading", "Whether the view is loading", FALSE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); /* Scrollable interface */ g_object_class_override_property (object_class, PROP_HADJUSTMENT, "hadjustment"); g_object_class_override_property (object_class, PROP_VADJUSTMENT, "vadjustment"); g_object_class_override_property (object_class, PROP_HSCROLL_POLICY, "hscroll-policy"); g_object_class_override_property (object_class, PROP_VSCROLL_POLICY, "vscroll-policy"); signals[SIGNAL_SCROLL] = g_signal_new ("scroll", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, scroll), NULL, NULL, ev_view_marshal_VOID__ENUM_ENUM, G_TYPE_NONE, 2, GTK_TYPE_SCROLL_TYPE, GTK_TYPE_ORIENTATION); signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, handle_link), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, external_link), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, popup_menu), NULL, NULL, g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); signals[SIGNAL_SELECTION_CHANGED] = g_signal_new ("selection-changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, selection_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE); signals[SIGNAL_SYNC_SOURCE] = g_signal_new ("sync-source", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, sync_source), NULL, NULL, g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); signals[SIGNAL_ANNOT_ADDED] = g_signal_new ("annot-added", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, annot_added), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, EV_TYPE_ANNOTATION); signals[SIGNAL_ANNOT_REMOVED] = g_signal_new ("annot-removed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, annot_removed), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, EV_TYPE_ANNOTATION); signals[SIGNAL_LAYERS_CHANGED] = g_signal_new ("layers-changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, layers_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE); signals[SIGNAL_MOVE_CURSOR] = g_signal_new ("move-cursor", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, move_cursor), NULL, NULL, ev_view_marshal_BOOLEAN__ENUM_INT_BOOLEAN, G_TYPE_BOOLEAN, 3, GTK_TYPE_MOVEMENT_STEP, G_TYPE_INT, G_TYPE_BOOLEAN); signals[SIGNAL_CURSOR_MOVED] = g_signal_new ("cursor-moved", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, 0, NULL, NULL, ev_view_marshal_VOID__INT_INT, G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT); binding_set = gtk_binding_set_by_class (class); add_move_binding_keypad (binding_set, GDK_KEY_Left, 0, GTK_MOVEMENT_VISUAL_POSITIONS, -1); add_move_binding_keypad (binding_set, GDK_KEY_Right, 0, GTK_MOVEMENT_VISUAL_POSITIONS, 1); add_move_binding_keypad (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, -1); add_move_binding_keypad (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, 1); add_move_binding_keypad (binding_set, GDK_KEY_Up, 0, GTK_MOVEMENT_DISPLAY_LINES, -1); add_move_binding_keypad (binding_set, GDK_KEY_Down, 0, GTK_MOVEMENT_DISPLAY_LINES, 1); add_move_binding_keypad (binding_set, GDK_KEY_Home, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1); add_move_binding_keypad (binding_set, GDK_KEY_End, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1); add_scroll_binding_keypad (binding_set, GDK_KEY_Left, 0, GTK_SCROLL_STEP_BACKWARD, GTK_ORIENTATION_HORIZONTAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Right, 0, GTK_SCROLL_STEP_FORWARD, GTK_ORIENTATION_HORIZONTAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Left, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, GTK_ORIENTATION_HORIZONTAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, GTK_ORIENTATION_HORIZONTAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Up, 0, GTK_SCROLL_STEP_BACKWARD, GTK_ORIENTATION_VERTICAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Down, 0, GTK_SCROLL_STEP_FORWARD, GTK_ORIENTATION_VERTICAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Up, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, GTK_ORIENTATION_VERTICAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Down, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, GTK_ORIENTATION_VERTICAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Page_Up, 0, GTK_SCROLL_PAGE_BACKWARD, GTK_ORIENTATION_VERTICAL); add_scroll_binding_keypad (binding_set, GDK_KEY_Page_Down, 0, GTK_SCROLL_PAGE_FORWARD, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, GDK_SHIFT_MASK, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_H, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_BACKWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_HORIZONTAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_J, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_FORWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_K, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_BACKWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_L, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_FORWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_HORIZONTAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_SHIFT_MASK, "scroll", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD, GTK_TYPE_ORIENTATION, GTK_ORIENTATION_VERTICAL); } static void on_notify_scale_factor (EvView *view, GParamSpec *pspec) { if (view->document) view_update_range_and_current_page (view); } static void zoom_gesture_begin_cb (GtkGesture *gesture, GdkEventSequence *sequence, EvView *view) { view->prev_zoom_gesture_scale = 1; } static void zoom_gesture_scale_changed_cb (GtkGestureZoom *gesture, gdouble scale, EvView *view) { gdouble factor; view->drag_info.in_drag = FALSE; view->image_dnd_info.in_drag = FALSE; factor = scale - view->prev_zoom_gesture_scale + 1; view->prev_zoom_gesture_scale = scale; ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); gtk_gesture_get_bounding_box_center (GTK_GESTURE (gesture), &view->zoom_center_x, &view->zoom_center_y); if ((factor < 1.0 && ev_view_can_zoom_out (view)) || (factor >= 1.0 && ev_view_can_zoom_in (view))) ev_view_zoom (view, factor); } static void ev_view_init (EvView *view) { GtkStyleContext *context; gtk_widget_set_can_focus (GTK_WIDGET (view), TRUE); gtk_widget_set_has_window (GTK_WIDGET (view), TRUE); gtk_widget_set_redraw_on_allocate (GTK_WIDGET (view), FALSE); context = gtk_widget_get_style_context (GTK_WIDGET (view)); gtk_style_context_add_class (context, "content-view"); gtk_style_context_add_class (context, "view"); gtk_widget_set_events (GTK_WIDGET (view), GDK_TOUCH_MASK | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_SCROLL_MASK | GDK_SMOOTH_SCROLL_MASK | GDK_KEY_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); view->start_page = -1; view->end_page = -1; view->spacing = 5; view->scale = 1.0; view->current_page = 0; view->pressed_button = -1; view->cursor = EV_VIEW_CURSOR_NORMAL; view->drag_info.in_drag = FALSE; view->scroll_info.autoscrolling = FALSE; view->selection_info.selections = NULL; view->selection_info.in_drag = FALSE; view->continuous = TRUE; view->dual_even_left = TRUE; view->fullscreen = FALSE; view->sizing_mode = EV_SIZING_FIT_WIDTH; view->page_layout = EV_PAGE_LAYOUT_SINGLE; view->pending_scroll = SCROLL_TO_KEEP_POSITION; view->jump_to_find_result = TRUE; view->highlight_find_results = FALSE; view->caret_enabled = FALSE; view->cursor_page = 0; view->zoom_center_x = -1; view->zoom_center_y = -1; g_signal_connect (view, "notify::scale-factor", G_CALLBACK (on_notify_scale_factor), NULL); view->zoom_gesture = gtk_gesture_zoom_new (GTK_WIDGET (view)); gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (view->zoom_gesture), GTK_PHASE_CAPTURE); g_signal_connect (view->zoom_gesture, "begin", G_CALLBACK (zoom_gesture_begin_cb), view); g_signal_connect (view->zoom_gesture, "scale-changed", G_CALLBACK (zoom_gesture_scale_changed_cb), view); } /*** Callbacks ***/ static void ev_view_change_page (EvView *view, gint new_page) { gint x, y; view->current_page = new_page; view->pending_scroll = SCROLL_TO_PAGE_POSITION; ev_view_set_loading (view, FALSE); ev_document_misc_get_pointer_position (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); gtk_widget_queue_resize (GTK_WIDGET (view)); } static void job_finished_cb (EvPixbufCache *pixbuf_cache, cairo_region_t *region, EvView *view) { if (region) { gdk_window_invalidate_region (gtk_widget_get_window (GTK_WIDGET (view)), region, TRUE); } else { gtk_widget_queue_draw (GTK_WIDGET (view)); } } static void ev_view_page_changed_cb (EvDocumentModel *model, gint old_page, gint new_page, EvView *view) { if (!view->document) return; if (view->current_page != new_page) { ev_view_change_page (view, new_page); } else { gtk_widget_queue_draw (GTK_WIDGET (view)); } view->find_result = 0; } static void on_adjustment_value_changed (GtkAdjustment *adjustment, EvView *view) { GtkWidget *widget = GTK_WIDGET (view); int dx = 0, dy = 0; gint x, y; gint value; GList *l; if (!gtk_widget_get_realized (widget)) return; if (view->hadjustment) { value = (gint) gtk_adjustment_get_value (view->hadjustment); dx = view->scroll_x - value; view->scroll_x = value; } else { view->scroll_x = 0; } if (view->vadjustment) { value = (gint) gtk_adjustment_get_value (view->vadjustment); dy = view->scroll_y - value; view->scroll_y = value; } else { view->scroll_y = 0; } for (l = view->children; l && l->data; l = g_list_next (l)) { EvViewChild *child = (EvViewChild *)l->data; child->x += dx; child->y += dy; if (gtk_widget_get_visible (child->widget) && gtk_widget_get_visible (widget)) gtk_widget_queue_resize (widget); } for (l = view->window_children; l && l->data; l = g_list_next (l)) { EvViewWindowChild *child; child = (EvViewWindowChild *)l->data; ev_view_window_child_move (view, child, child->x + dx, child->y + dy); } if (view->pending_resize) { gtk_widget_queue_draw (widget); } else { gdk_window_scroll (gtk_widget_get_window (widget), dx, dy); } ev_document_misc_get_pointer_position (widget, &x, &y); ev_view_handle_cursor_over_xy (view, x, y); if (view->document) view_update_range_and_current_page (view); } GtkWidget* ev_view_new (void) { GtkWidget *view; view = g_object_new (EV_TYPE_VIEW, NULL); return view; } static void setup_caches (EvView *view) { gboolean inverted_colors; view->height_to_page_cache = ev_view_get_height_to_page_cache (view); view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->model, view->pixbuf_cache_size); view->page_cache = ev_page_cache_new (view->document); ev_page_cache_set_flags (view->page_cache, ev_page_cache_get_flags (view->page_cache) | EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT | EV_PAGE_DATA_INCLUDE_TEXT | EV_PAGE_DATA_INCLUDE_TEXT_ATTRS | EV_PAGE_DATA_INCLUDE_TEXT_LOG_ATTRS); inverted_colors = ev_document_model_get_inverted_colors (view->model); ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors); g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view); } static void clear_caches (EvView *view) { if (view->pixbuf_cache) { g_object_unref (view->pixbuf_cache); view->pixbuf_cache = NULL; } if (view->page_cache) { g_object_unref (view->page_cache); view->page_cache = NULL; } } /** * ev_view_set_page_cache_size: * @view: * @cache_size: * * Sets the maximum size in bytes that will be used to cache * rendered pages. Use 0 to disable caching rendered pages. * * Note that this limit doesn't affect the current visible page range, * which will always be rendered. In order to limit the total memory used * you have to use ev_document_model_set_max_scale() too. * */ void ev_view_set_page_cache_size (EvView *view, gsize cache_size) { if (view->pixbuf_cache_size == cache_size) return; view->pixbuf_cache_size = cache_size; if (view->pixbuf_cache) ev_pixbuf_cache_set_max_size (view->pixbuf_cache, cache_size); } void ev_view_set_loading (EvView *view, gboolean loading) { if (view->loading == loading) return; view->loading = loading; g_object_notify (G_OBJECT (view), "is-loading"); } gboolean ev_view_is_loading (EvView *view) { return view->loading; } static gboolean ev_view_autoscroll_cb (EvView *view) { gdouble speed, value; /* If the user stops autoscrolling, autoscrolling will be * set to false but the timeout will continue; stop the timeout: */ if (!view->scroll_info.autoscrolling) { view->scroll_info.timeout_id = 0; return FALSE; } /* Replace 100 with your speed of choice: The lower the faster. * Replace 3 with another speed of choice: The higher, the faster it accelerated * based on the distance of the starting point from the mouse * (All also effected by the timeout interval of this callback) */ if (view->scroll_info.start_y > view->scroll_info.last_y) speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3); else speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3); value = gtk_adjustment_get_value (view->vadjustment); value = CLAMP (value + speed, 0, gtk_adjustment_get_upper (view->vadjustment) - gtk_adjustment_get_page_size (view->vadjustment)); gtk_adjustment_set_value (view->vadjustment, value); return TRUE; } void ev_view_autoscroll_start (EvView *view) { gint x, y; g_return_if_fail (EV_IS_VIEW (view)); if (view->scroll_info.autoscrolling) return; view->scroll_info.autoscrolling = TRUE; view->scroll_info.timeout_id = g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb, view); ev_document_misc_get_pointer_position (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); } void ev_view_autoscroll_stop (EvView *view) { gint x, y; g_return_if_fail (EV_IS_VIEW (view)); if (!view->scroll_info.autoscrolling) return; view->scroll_info.autoscrolling = FALSE; if (view->scroll_info.timeout_id) { g_source_remove (view->scroll_info.timeout_id); view->scroll_info.timeout_id = 0; } ev_document_misc_get_pointer_position (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); } static void ev_view_document_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { EvDocument *document = ev_document_model_get_document (model); if (document != view->document) { gint current_page; ev_view_remove_all (view); clear_caches (view); if (view->document) { g_object_unref (view->document); } view->document = document ? g_object_ref (document) : NULL; view->find_result = 0; if (view->document) { if (ev_document_get_n_pages (view->document) <= 0 || !ev_document_check_dimensions (view->document)) return; ev_view_set_loading (view, FALSE); setup_caches (view); } current_page = ev_document_model_get_page (model); if (view->current_page != current_page) { ev_view_change_page (view, current_page); } else { view->pending_scroll = SCROLL_TO_KEEP_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } } } static void ev_view_rotation_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gint rotation = ev_document_model_get_rotation (model); view->rotation = rotation; if (view->pixbuf_cache) { ev_pixbuf_cache_clear (view->pixbuf_cache); if (!ev_document_is_page_size_uniform (view->document)) view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } ev_view_remove_all (view); if (rotation != 0) clear_selection (view); } static void ev_view_inverted_colors_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { if (view->pixbuf_cache) { gboolean inverted_colors; inverted_colors = ev_document_model_get_inverted_colors (model); ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors); gtk_widget_queue_draw (GTK_WIDGET (view)); } } static void ev_view_sizing_mode_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { EvSizingMode mode = ev_document_model_get_sizing_mode (model); view->sizing_mode = mode; if (mode != EV_SIZING_FREE) gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_page_layout_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { EvPageLayout layout = ev_document_model_get_page_layout (model); view->page_layout = layout; view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); /* FIXME: if we're keeping the pixbuf cache around, we should extend the * preload_cache_size to be 2 if dual_page is set. */ } #define EPSILON 0.0000001 static void ev_view_scale_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gdouble scale = ev_document_model_get_scale (model); if (ABS (view->scale - scale) < EPSILON) return; view->scale = scale; view->pending_resize = TRUE; if (view->sizing_mode == EV_SIZING_FREE) gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_continuous_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gboolean continuous = ev_document_model_get_continuous (model); view->continuous = continuous; view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_dual_odd_left_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { view->dual_even_left = !ev_document_model_get_dual_page_odd_pages_left (model); view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_fullscreen_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gboolean fullscreen = ev_document_model_get_fullscreen (model); view->fullscreen = fullscreen; gtk_widget_queue_resize (GTK_WIDGET (view)); } void ev_view_set_model (EvView *view, EvDocumentModel *model) { g_return_if_fail (EV_IS_VIEW (view)); g_return_if_fail (EV_IS_DOCUMENT_MODEL (model)); if (model == view->model) return; if (view->model) { g_signal_handlers_disconnect_by_func (view->model, ev_view_document_changed_cb, view); g_signal_handlers_disconnect_by_func (view->model, ev_view_page_changed_cb, view); g_object_unref (view->model); } view->model = g_object_ref (model); /* Initialize view from model */ view->rotation = ev_document_model_get_rotation (view->model); view->sizing_mode = ev_document_model_get_sizing_mode (view->model); view->scale = ev_document_model_get_scale (view->model); view->continuous = ev_document_model_get_continuous (view->model); view->page_layout = ev_document_model_get_page_layout (view->model); view->fullscreen = ev_document_model_get_fullscreen (view->model); ev_view_document_changed_cb (view->model, NULL, view); g_signal_connect (view->model, "notify::document", G_CALLBACK (ev_view_document_changed_cb), view); g_signal_connect (view->model, "notify::rotation", G_CALLBACK (ev_view_rotation_changed_cb), view); g_signal_connect (view->model, "notify::inverted-colors", G_CALLBACK (ev_view_inverted_colors_changed_cb), view); g_signal_connect (view->model, "notify::sizing-mode", G_CALLBACK (ev_view_sizing_mode_changed_cb), view); g_signal_connect (view->model, "notify::page-layout", G_CALLBACK (ev_view_page_layout_changed_cb), view); g_signal_connect (view->model, "notify::scale", G_CALLBACK (ev_view_scale_changed_cb), view); g_signal_connect (view->model, "notify::continuous", G_CALLBACK (ev_view_continuous_changed_cb), view); g_signal_connect (view->model, "notify::dual-odd-left", G_CALLBACK (ev_view_dual_odd_left_changed_cb), view); g_signal_connect (view->model, "notify::fullscreen", G_CALLBACK (ev_view_fullscreen_changed_cb), view); g_signal_connect (view->model, "page-changed", G_CALLBACK (ev_view_page_changed_cb), view); if (view->accessible) ev_view_accessible_set_model (EV_VIEW_ACCESSIBLE (view->accessible), view->model); } static void ev_view_reload_page (EvView *view, gint page, cairo_region_t *region) { ev_pixbuf_cache_reload_page (view->pixbuf_cache, region, page, view->rotation, view->scale); } void ev_view_reload (EvView *view) { ev_pixbuf_cache_clear (view->pixbuf_cache); view_update_range_and_current_page (view); } /*** Zoom and sizing mode ***/ gboolean ev_view_can_zoom_in (EvView *view) { return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model); } gboolean ev_view_can_zoom_out (EvView *view) { return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model); } void ev_view_zoom (EvView *view, gdouble factor) { gdouble scale; g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); view->pending_scroll = SCROLL_TO_CENTER; scale = ev_document_model_get_scale (view->model) * factor; ev_document_model_set_scale (view->model, scale); } void ev_view_zoom_in (EvView *view) { ev_view_zoom (view, ZOOM_IN_FACTOR); } void ev_view_zoom_out (EvView *view) { ev_view_zoom (view, ZOOM_OUT_FACTOR); } void ev_view_zoom_reset (EvView *view) { g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); ev_document_model_set_scale (view->model, 1.2); } static double zoom_for_size_fit_width (gdouble doc_width, gdouble doc_height, int target_width, int target_height) { return (double)target_width / doc_width; } static double zoom_for_size_fit_height (gdouble doc_width, gdouble doc_height, int target_width, int target_height) { return (double)target_height / doc_height; } static double zoom_for_size_fit_page (gdouble doc_width, gdouble doc_height, int target_width, int target_height) { double w_scale; double h_scale; w_scale = (double)target_width / doc_width; h_scale = (double)target_height / doc_height; return MIN (w_scale, h_scale); } static double zoom_for_size_automatic (GdkScreen *screen, gdouble doc_width, gdouble doc_height, int target_width, int target_height) { double fit_width_scale; double scale; fit_width_scale = zoom_for_size_fit_width (doc_width, doc_height, target_width, target_height); if (doc_height < doc_width) { double fit_height_scale; fit_height_scale = zoom_for_size_fit_height (doc_width, doc_height, target_width, target_height); scale = MIN (fit_width_scale, fit_height_scale); } else { double actual_scale, resolution; resolution = gdk_screen_get_resolution (screen); if (resolution == -1) { GdkDisplay *display = gdk_screen_get_display (screen); GdkMonitor *monitor = gdk_display_get_primary_monitor (display); resolution = ev_document_misc_get_monitor_dpi (monitor); } actual_scale = resolution / 72.0; scale = MIN (fit_width_scale, actual_scale); } return scale; } static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, int width, int height) { gdouble doc_width, doc_height; GtkBorder border; gdouble scale; gint sb_size; ev_document_get_max_page_size (view->document, &doc_width, &doc_height); if (view->rotation == 90 || view->rotation == 270) { gdouble tmp; tmp = doc_width; doc_width = doc_height; doc_height = tmp; } compute_border (view, &border); doc_width *= 2; width -= (2 * (border.left + border.right) + 3 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing - 1); sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL); switch (view->sizing_mode) { case EV_SIZING_FIT_WIDTH: scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height); break; case EV_SIZING_FIT_PAGE: scale = zoom_for_size_fit_page (doc_width, doc_height, width - sb_size, height); break; case EV_SIZING_AUTOMATIC: scale = zoom_for_size_automatic (gtk_widget_get_screen (GTK_WIDGET (view)), doc_width, doc_height, width - sb_size, height); break; default: g_assert_not_reached (); } ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_continuous (EvView *view, int width, int height) { gdouble doc_width, doc_height; GtkBorder border; gdouble scale; gint sb_size; ev_document_get_max_page_size (view->document, &doc_width, &doc_height); if (view->rotation == 90 || view->rotation == 270) { gdouble tmp; tmp = doc_width; doc_width = doc_height; doc_height = tmp; } compute_border (view, &border); width -= (border.left + border.right + 2 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing - 1); sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL); switch (view->sizing_mode) { case EV_SIZING_FIT_WIDTH: scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height); break; case EV_SIZING_FIT_PAGE: scale = zoom_for_size_fit_page (doc_width, doc_height, width - sb_size, height); break; case EV_SIZING_AUTOMATIC: scale = zoom_for_size_automatic (gtk_widget_get_screen (GTK_WIDGET (view)), doc_width, doc_height, width - sb_size, height); break; default: g_assert_not_reached (); } ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_dual_page (EvView *view, int width, int height) { GtkBorder border; gdouble doc_width, doc_height; gdouble scale; gint other_page; gint sb_size; other_page = view->current_page ^ 1; /* Find the largest of the two. */ get_doc_page_size (view, view->current_page, &doc_width, &doc_height); if (other_page < ev_document_get_n_pages (view->document)) { gdouble width_2, height_2; get_doc_page_size (view, other_page, &width_2, &height_2); if (width_2 > doc_width) doc_width = width_2; if (height_2 > doc_height) doc_height = height_2; } compute_border (view, &border); doc_width = doc_width * 2; width -= ((border.left + border.right)* 2 + 3 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing); switch (view->sizing_mode) { case EV_SIZING_FIT_WIDTH: sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL); scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height); break; case EV_SIZING_FIT_PAGE: scale = zoom_for_size_fit_page (doc_width, doc_height, width, height); break; case EV_SIZING_AUTOMATIC: sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL); scale = zoom_for_size_automatic (gtk_widget_get_screen (GTK_WIDGET (view)), doc_width, doc_height, width - sb_size, height); break; default: g_assert_not_reached (); } ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_single_page (EvView *view, int width, int height) { gdouble doc_width, doc_height; GtkBorder border; gdouble scale; gint sb_size; get_doc_page_size (view, view->current_page, &doc_width, &doc_height); /* Get an approximate border */ compute_border (view, &border); width -= (border.left + border.right + 2 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing); switch (view->sizing_mode) { case EV_SIZING_FIT_WIDTH: sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL); scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height); break; case EV_SIZING_FIT_PAGE: scale = zoom_for_size_fit_page (doc_width, doc_height, width, height); break; case EV_SIZING_AUTOMATIC: sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL); scale = zoom_for_size_automatic (gtk_widget_get_screen (GTK_WIDGET (view)), doc_width, doc_height, width - sb_size, height); break; default: g_assert_not_reached (); } ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size (EvView *view, int width, int height) { gboolean dual_page; g_return_if_fail (EV_IS_VIEW (view)); g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH || view->sizing_mode == EV_SIZING_FIT_PAGE || view->sizing_mode == EV_SIZING_AUTOMATIC); g_return_if_fail (width >= 0); g_return_if_fail (height >= 0); if (view->document == NULL) return; dual_page = is_dual_page (view, NULL); if (view->continuous && dual_page) ev_view_zoom_for_size_continuous_and_dual_page (view, width, height); else if (view->continuous) ev_view_zoom_for_size_continuous (view, width, height); else if (dual_page) ev_view_zoom_for_size_dual_page (view, width, height); else ev_view_zoom_for_size_single_page (view, width, height); } static gboolean ev_view_page_fits (EvView *view, GtkOrientation orientation) { GtkRequisition requisition; GtkAllocation allocation; double size; if (view->sizing_mode == EV_SIZING_FIT_PAGE) return TRUE; if (orientation == GTK_ORIENTATION_HORIZONTAL && (view->sizing_mode == EV_SIZING_FIT_WIDTH)) return TRUE; gtk_widget_get_allocation (GTK_WIDGET (view), &allocation); ev_view_size_request (GTK_WIDGET (view), &requisition); if (orientation == GTK_ORIENTATION_HORIZONTAL) { if (requisition.width == 1) { size = 1.0; } else { if (allocation.width > 0.0) size = (double) requisition.width / allocation.width; else size = 1.0; } } else { if (requisition.height == 1) { size = 1.0; } else { if (allocation.height > 0.0) size = (double) requisition.height / allocation.height; else size = 1.0; } } return size <= 1.0; } /*** Find ***/ static gint ev_view_find_get_n_results (EvView *view, gint page) { return view->find_pages ? g_list_length (view->find_pages[page]) : 0; } static EvRectangle * ev_view_find_get_result (EvView *view, gint page, gint result) { return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL; } static void jump_to_find_result (EvView *view) { gint n_results; gint page = view->current_page; n_results = ev_view_find_get_n_results (view, page); if (n_results > 0 && view->find_result < n_results) { EvRectangle *rect; GdkRectangle view_rect; rect = ev_view_find_get_result (view, page, view->find_result); _ev_view_transform_doc_rect_to_view_rect (view, page, rect, &view_rect); ensure_rectangle_is_visible (view, &view_rect); if (view->caret_enabled && view->rotation == 0) position_caret_cursor_at_doc_point (view, page, rect->x1, rect->y1); view->jump_to_find_result = FALSE; } } /** * jump_to_find_page: * @view: #EvView instance * @direction: Direction to look * @shift: Shift from current page * * Jumps to the first page that has occurences of searched word. * Uses a direction where to look and a shift from current page. * */ static void jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift) { int n_pages, i; n_pages = ev_document_get_n_pages (view->document); for (i = 0; i < n_pages; i++) { int page; if (direction == EV_VIEW_FIND_NEXT) page = view->current_page + i; else page = view->current_page - i; page += shift; if (page >= n_pages) { page = page - n_pages; } else if (page < 0) page = page + n_pages; if (ev_view_find_get_n_results (view, page) > 0) { ev_document_model_set_page (view->model, page); break; } } } /** * ev_view_find_changed: (skip) * @view: an #EvView * @results: the results as returned by ev_job_find_get_results() * @page: page index */ void ev_view_find_changed (EvView *view, GList **results, gint page) { g_return_if_fail (view->current_page >= 0); view->find_pages = results; if (view->jump_to_find_result == TRUE) { jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0); jump_to_find_result (view); } if (view->current_page == page) gtk_widget_queue_draw (GTK_WIDGET (view)); } void ev_view_find_next (EvView *view) { gint n_results; n_results = ev_view_find_get_n_results (view, view->current_page); view->find_result++; if (view->find_result >= n_results) { view->find_result = 0; jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1); jump_to_find_result (view); } else { jump_to_find_result (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } } void ev_view_find_previous (EvView *view) { view->find_result--; if (view->find_result < 0) { jump_to_find_page (view, EV_VIEW_FIND_PREV, -1); view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1); jump_to_find_result (view); } else { jump_to_find_result (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } } void ev_view_find_search_changed (EvView *view) { /* search string has changed, focus on new search result */ view->jump_to_find_result = TRUE; view->find_pages = NULL; } void ev_view_find_set_highlight_search (EvView *view, gboolean value) { view->highlight_find_results = value; gtk_widget_queue_draw (GTK_WIDGET (view)); } void ev_view_find_cancel (EvView *view) { view->find_pages = NULL; } /*** Synctex ***/ void ev_view_highlight_forward_search (EvView *view, EvSourceLink *link) { EvMapping *mapping; gint page; GdkRectangle view_rect; if (!ev_document_has_synctex (view->document)) return; mapping = ev_document_synctex_forward_search (view->document, link); if (!mapping) return; if (view->synctex_result) g_free (view->synctex_result); view->synctex_result = mapping; page = GPOINTER_TO_INT (mapping->data); ev_document_model_set_page (view->model, page); _ev_view_transform_doc_rect_to_view_rect (view, page, &mapping->area, &view_rect); ensure_rectangle_is_visible (view, &view_rect); gtk_widget_queue_draw (GTK_WIDGET (view)); } /*** Selections ***/ static gboolean gdk_rectangle_point_in (GdkRectangle *rectangle, GdkPoint *point) { return rectangle->x <= point->x && rectangle->y <= point->y && point->x < rectangle->x + rectangle->width && point->y < rectangle->y + rectangle->height; } static inline gboolean gdk_point_equal (GdkPoint *a, GdkPoint *b) { return a->x == b->x && a->y == b->y; } static gboolean get_selection_page_range (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop, gint *first_page, gint *last_page) { gint start_page, end_page; gint first, last; gint i, n_pages; n_pages = ev_document_get_n_pages (view->document); if (gdk_point_equal (start, stop)) { start_page = view->start_page; end_page = view->end_page; } else if (view->continuous) { start_page = 0; end_page = n_pages - 1; } else if (is_dual_page (view, NULL)) { start_page = view->start_page; end_page = view->end_page; } else { start_page = view->current_page; end_page = view->current_page; } first = -1; last = -1; for (i = start_page; i <= end_page; i++) { GdkRectangle page_area; GtkBorder border; ev_view_get_page_extents (view, i, &page_area, &border); page_area.x -= border.left; page_area.y -= border.top; page_area.width += border.left + border.right; page_area.height += border.top + border.bottom; if (gdk_rectangle_point_in (&page_area, start) || gdk_rectangle_point_in (&page_area, stop)) { if (first == -1) first = i; last = i; } } if (first != -1 && last != -1) { *first_page = first; *last_page = last; return TRUE; } return FALSE; } static GList * compute_new_selection (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop) { int i, first, last; GList *list = NULL; /* First figure out the range of pages the selection affects. */ if (!get_selection_page_range (view, style, start, stop, &first, &last)) return list; /* Now create a list of EvViewSelection's for the affected * pages. This could be an empty list, a list of just one * page or a number of pages.*/ for (i = first; i <= last; i++) { EvViewSelection *selection; GdkRectangle page_area; GtkBorder border; GdkPoint *point; gdouble width, height; get_doc_page_size (view, i, &width, &height); selection = g_slice_new0 (EvViewSelection); selection->page = i; selection->style = style; selection->rect.x1 = selection->rect.y1 = 0; selection->rect.x2 = width; selection->rect.y2 = height; ev_view_get_page_extents (view, i, &page_area, &border); page_area.x -= border.left; page_area.y -= border.top; page_area.width += border.left + border.right; page_area.height += border.top + border.bottom; if (gdk_rectangle_point_in (&page_area, start)) point = start; else point = stop; if (i == first) { _ev_view_transform_view_point_to_doc_point (view, point, &page_area, &selection->rect.x1, &selection->rect.y1); selection->rect.x1 = MAX (selection->rect.x1 - border.left, 0); selection->rect.y1 = MAX (selection->rect.y1 - border.top, 0); } /* If the selection is contained within just one page, * make sure we don't write 'start' into both points * in selection->rect. */ if (first == last) point = stop; if (i == last) { _ev_view_transform_view_point_to_doc_point (view, point, &page_area, &selection->rect.x2, &selection->rect.y2); selection->rect.x2 = MAX (selection->rect.x2 - border.right, 0); selection->rect.y2 = MAX (selection->rect.y2 - border.bottom, 0); } list = g_list_prepend (list, selection); } return g_list_reverse (list); } /* This function takes the newly calculated list, and figures out which regions * have changed. It then queues a redraw approporiately. */ static void merge_selection_region (EvView *view, GList *new_list) { GList *old_list; GList *new_list_ptr, *old_list_ptr; /* Update the selection */ old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache); g_list_free_full (view->selection_info.selections, (GDestroyNotify)selection_free); view->selection_info.selections = new_list; ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list); g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL); new_list_ptr = new_list; old_list_ptr = old_list; while (new_list_ptr || old_list_ptr) { EvViewSelection *old_sel, *new_sel; int cur_page; cairo_region_t *region = NULL; new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL; old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL; /* Assume that the lists are in order, and we run through them * comparing them, one page at a time. We come out with the * first page we see. */ if (new_sel && old_sel) { if (new_sel->page < old_sel->page) { new_list_ptr = new_list_ptr->next; old_sel = NULL; } else if (new_sel->page > old_sel->page) { old_list_ptr = old_list_ptr->next; new_sel = NULL; } else { new_list_ptr = new_list_ptr->next; old_list_ptr = old_list_ptr->next; } } else if (new_sel) { new_list_ptr = new_list_ptr->next; } else if (old_sel) { old_list_ptr = old_list_ptr->next; } g_assert (new_sel || old_sel); /* is the page we're looking at on the screen?*/ cur_page = new_sel ? new_sel->page : old_sel->page; if (cur_page < view->start_page || cur_page > view->end_page) continue; /* seed the cache with a new page. We are going to need the new * region too. */ if (new_sel) { cairo_region_t *tmp_region; tmp_region = ev_pixbuf_cache_get_selection_region (view->pixbuf_cache, cur_page, view->scale); if (tmp_region) new_sel->covered_region = cairo_region_reference (tmp_region); } /* Now we figure out what needs redrawing */ if (old_sel && new_sel) { if (old_sel->covered_region && new_sel->covered_region) { if (!cairo_region_equal (old_sel->covered_region, new_sel->covered_region)) { /* Anything that was previously or currently selected may * have changed */ region = cairo_region_copy (old_sel->covered_region); cairo_region_union (region, new_sel->covered_region); } } else if (old_sel->covered_region) { region = cairo_region_reference (old_sel->covered_region); } else if (new_sel->covered_region) { region = cairo_region_reference (new_sel->covered_region); } } else if (old_sel && !new_sel) { if (old_sel->covered_region && !cairo_region_is_empty (old_sel->covered_region)) { region = cairo_region_reference (old_sel->covered_region); } } else if (!old_sel && new_sel) { if (new_sel->covered_region && !cairo_region_is_empty (new_sel->covered_region)) { region = cairo_region_reference (new_sel->covered_region); } } else { g_assert_not_reached (); } /* Redraw the damaged region! */ if (region) { GdkRectangle page_area; GtkBorder border; cairo_region_t *damage_region; gint i, n_rects; ev_view_get_page_extents (view, cur_page, &page_area, &border); damage_region = cairo_region_create (); /* Translate the region and grow it 2 pixels because for some zoom levels * the area actually drawn by cairo is larger than the selected region, due * to rounding errors or pixel alignment. */ n_rects = cairo_region_num_rectangles (region); for (i = 0; i < n_rects; i++) { cairo_rectangle_int_t rect; cairo_region_get_rectangle (region, i, &rect); rect.x += page_area.x + border.left - view->scroll_x - 2; rect.y += page_area.y + border.top - view->scroll_y - 2; rect.width += 4; rect.height += 4; cairo_region_union_rectangle (damage_region, &rect); } cairo_region_destroy (region); gdk_window_invalidate_region (gtk_widget_get_window (GTK_WIDGET (view)), damage_region, TRUE); cairo_region_destroy (damage_region); } } ev_view_check_cursor_blink (view); /* Free the old list, now that we're done with it. */ g_list_free_full (old_list, (GDestroyNotify)selection_free); } static void compute_selections (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop) { merge_selection_region (view, compute_new_selection (view, style, start, stop)); } /* Free's the selection. It's up to the caller to queue redraws if needed. */ static void selection_free (EvViewSelection *selection) { if (selection->covered_region) cairo_region_destroy (selection->covered_region); g_slice_free (EvViewSelection, selection); } static void clear_selection (EvView *view) { merge_selection_region (view, NULL); } void ev_view_select_all (EvView *view) { GList *selections = NULL; int n_pages, i; /* Disable selection on rotated pages for the 0.4.0 series */ if (view->rotation != 0) return; n_pages = ev_document_get_n_pages (view->document); for (i = 0; i < n_pages; i++) { gdouble width, height; EvViewSelection *selection; get_doc_page_size (view, i, &width, &height); selection = g_slice_new0 (EvViewSelection); selection->page = i; selection->style = EV_SELECTION_STYLE_GLYPH; selection->rect.x1 = selection->rect.y1 = 0; selection->rect.x2 = width; selection->rect.y2 = height; selections = g_list_prepend (selections, selection); } merge_selection_region (view, g_list_reverse (selections)); } gboolean ev_view_get_has_selection (EvView *view) { return view->selection_info.selections != NULL; } void _ev_view_clear_selection (EvView *view) { clear_selection (view); } void _ev_view_set_selection (EvView *view, GdkPoint *start_point, GdkPoint *end_point) { compute_selections (view, EV_SELECTION_STYLE_GLYPH, start_point, end_point); } static char * get_selected_text (EvView *view) { GString *text; GList *l; gchar *normalized_text; text = g_string_new (NULL); ev_document_doc_mutex_lock (); for (l = view->selection_info.selections; l != NULL; l = l->next) { EvViewSelection *selection = (EvViewSelection *)l->data; EvPage *page; gchar *tmp; page = ev_document_get_page (view->document, selection->page); tmp = ev_selection_get_selected_text (EV_SELECTION (view->document), page, selection->style, &(selection->rect)); g_object_unref (page); g_string_append (text, tmp); g_free (tmp); } ev_document_doc_mutex_unlock (); normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC); g_string_free (text, TRUE); return normalized_text; } static void ev_view_clipboard_copy (EvView *view, const gchar *text) { GtkClipboard *clipboard; clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view), GDK_SELECTION_CLIPBOARD); gtk_clipboard_set_text (clipboard, text, -1); } void ev_view_copy (EvView *ev_view) { char *text; if (!EV_IS_SELECTION (ev_view->document)) return; text = get_selected_text (ev_view); ev_view_clipboard_copy (ev_view, text); g_free (text); } static void ev_view_primary_get_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data) { EvView *ev_view = EV_VIEW (data); if (ev_view->link_selected) { gtk_selection_data_set_text (selection_data, ev_link_action_get_uri (ev_view->link_selected), -1); } else if (EV_IS_SELECTION (ev_view->document) && ev_view->selection_info.selections) { gchar *text; text = get_selected_text (ev_view); if (text) { gtk_selection_data_set_text (selection_data, text, -1); g_free (text); } } } static void ev_view_primary_clear_cb (GtkClipboard *clipboard, gpointer data) { EvView *view = EV_VIEW (data); clear_selection (view); clear_link_selected (view); } static void ev_view_update_primary_selection (EvView *ev_view) { GtkClipboard *clipboard; clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), GDK_SELECTION_PRIMARY); if (ev_view->selection_info.selections || ev_view->link_selected) { GtkTargetList *target_list; GtkTargetEntry *targets; int n_targets; target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (target_list, 0); targets = gtk_target_table_new_from_list (target_list, &n_targets); gtk_target_list_unref (target_list); if (!gtk_clipboard_set_with_owner (clipboard, targets, n_targets, ev_view_primary_get_cb, ev_view_primary_clear_cb, G_OBJECT (ev_view))) ev_view_primary_clear_cb (clipboard, ev_view); gtk_target_table_free (targets, n_targets); } else { if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) gtk_clipboard_clear (clipboard); } } static void clear_link_selected (EvView *view) { if (view->link_selected) { g_object_unref (view->link_selected); view->link_selected = NULL; } } void ev_view_copy_link_address (EvView *view, EvLinkAction *action) { clear_link_selected (view); ev_view_clipboard_copy (view, ev_link_action_get_uri (action)); view->link_selected = g_object_ref (action); ev_view_update_primary_selection (view); } /*** Cursor operations ***/ static void ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) { GdkDisplay *display; GdkCursor *cursor = NULL; GtkWidget *widget; GdkWindow *bin_window; if (view->cursor == new_cursor) { return; } view->cursor = new_cursor; bin_window = gtk_widget_get_window (GTK_WIDGET (view)); widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); display = gtk_widget_get_display (widget); cursor = ev_view_cursor_new (display, new_cursor); gdk_window_set_cursor (bin_window, cursor); gdk_display_flush (display); if (cursor) g_object_unref (cursor); } void ev_view_hide_cursor (EvView *view) { ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN); } void ev_view_show_cursor (EvView *view) { ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } gboolean ev_view_next_page (EvView *view) { gint next_page; g_return_val_if_fail (EV_IS_VIEW (view), FALSE); next_page = go_to_next_page (view, view->current_page); if (next_page == -1) return FALSE; ev_document_model_set_page (view->model, next_page); return TRUE; } gboolean ev_view_previous_page (EvView *view) { gint prev_page; g_return_val_if_fail (EV_IS_VIEW (view), FALSE); prev_page = go_to_previous_page (view, view->current_page); if (prev_page == -1) return FALSE; ev_document_model_set_page (view->model, prev_page); return TRUE; } /** * ev_view_disconnect_handlers * @view: #EvView instance * * Disconnect all signal handlers from the model, to ensure error free operation of the webview, * we have an equivalent function for the webview. */ void ev_view_disconnect_handlers(EvView *view) { g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_rotation_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_inverted_colors_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_sizing_mode_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_page_layout_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_scale_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_continuous_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_fullscreen_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_page_changed_cb), view); g_signal_handlers_disconnect_by_func(view->model, G_CALLBACK (ev_view_document_changed_cb), view); }