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| author | Perberos <[email protected]> | 2011-11-09 18:17:43 -0300 |
|---|---|---|
| committer | Perberos <[email protected]> | 2011-11-09 18:17:43 -0300 |
| commit | f6ce926719943751cf65cacde7fae050593eb2d6 (patch) | |
| tree | 9224d1751678cf2d1fbd0431f128b711311c0287 /libview/ev-view.c | |
| download | atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.bz2 atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.xz | |
inicial
Diffstat (limited to 'libview/ev-view.c')
| -rw-r--r-- | libview/ev-view.c | 6274 |
1 files changed, 6274 insertions, 0 deletions
diff --git a/libview/ev-view.c b/libview/ev-view.c new file mode 100644 index 00000000..b47d6047 --- /dev/null +++ b/libview/ev-view.c @@ -0,0 +1,6274 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* this file is part of evince, a mate document viewer + * + * Copyright (C) 2004 Red Hat, Inc + * + * Evince 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. + * + * Evince 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 <stdlib.h> +#include <math.h> +#include <string.h> + +#include <glib/gi18n-lib.h> +#include <gtk/gtk.h> +#include <gdk/gdkkeysyms.h> + +#include "ev-mapping-list.h" +#include "ev-document-forms.h" +#include "ev-document-images.h" +#include "ev-document-links.h" +#include "ev-document-misc.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-loading-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_BINDING_ACTIVATED, + SIGNAL_HANDLE_LINK, + SIGNAL_EXTERNAL_LINK, + SIGNAL_POPUP_MENU, + SIGNAL_SELECTION_CHANGED, + SIGNAL_SYNC_SOURCE, + SIGNAL_ANNOT_ADDED, + N_SIGNALS +}; + +enum { + TARGET_DND_URI, + TARGET_DND_TEXT, + TARGET_DND_IMAGE +}; + +static guint signals[N_SIGNALS]; + +typedef enum { + EV_VIEW_FIND_NEXT, + EV_VIEW_FIND_PREV +} EvViewFindDirection; + +#define ZOOM_IN_FACTOR 1.2 +#define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) + +#define SCROLL_TIME 150 + +/*** Scrolling ***/ +static void ev_view_set_scroll_adjustments (GtkLayout *layout, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment); +static void view_update_range_and_current_page (EvView *view); +static void set_scroll_adjustment (EvView *view, + GtkOrientation orientation, + GtkAdjustment *adjustment); +static void add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GdkModifierType modifiers, + GtkScrollType scroll, + gboolean horizontal); +static void ensure_rectangle_is_visible (EvView *view, + GdkRectangle *rect); + +/*** Geometry computations ***/ +static void compute_border (EvView *view, + int width, + int height, + GtkBorder *border); +static void get_page_y_offset (EvView *view, + int page, + int *y_offset); +static void view_rect_to_doc_rect (EvView *view, + GdkRectangle *view_rect, + GdkRectangle *page_area, + EvRectangle *doc_rect); +static void doc_rect_to_view_rect (EvView *view, + int page, + EvRectangle *doc_rect, + GdkRectangle *view_rect); +static gboolean get_dual_even_left (EvView *view); +static void find_page_at_location (EvView *view, + gdouble x, + gdouble y, + gint *page, + gint *x_offset, + gint *y_offset); +static void doc_point_to_view_point (EvView *view, + int page, + EvPoint *doc_point, + GdkPoint *view_point); +/*** 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 void ev_view_realize (GtkWidget *widget); +static gboolean ev_view_scroll_event (GtkWidget *widget, + GdkEventScroll *event); +static gboolean ev_view_expose_event (GtkWidget *widget, + GdkEventExpose *event); +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_set (GtkWidget *widget, + GtkStyle *old_style); +static void ev_view_remove_all (EvView *view); + +static AtkObject *ev_view_get_accessible (GtkWidget *widget); + +/*** Drawing ***/ +static void highlight_find_results (EvView *view, + int page); +static void highlight_forward_search_results (EvView *view, + int page); +static void focus_annotation (EvView *view, + int page, + GdkRectangle *clip); +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 show_loading_window (EvView *view); +static void hide_loading_window (EvView *view); +static void ev_view_reload_page (EvView *view, + gint page, + cairo_region_t *region); +static void ev_view_loading_window_move (EvView *view); + +/*** 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_destroy (GtkObject *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_best_fit (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); +/*** 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 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); + +G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT) + +/* HeightToPage cache */ +#define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache" + +static void +build_height_to_page (EvHeightToPageCache *cache, + EvDocument *document, + gint rotation) +{ + gboolean swap, uniform, dual_even_left; + int i; + double uniform_height, page_height, next_page_height; + double saved_height; + gdouble u_width, u_height; + gint n_pages; + + swap = (rotation == 90 || rotation == 270); + + uniform = ev_document_is_page_size_uniform (document); + n_pages = ev_document_get_n_pages (document); + dual_even_left = (n_pages > 2); + + g_free (cache->height_to_page); + g_free (cache->dual_height_to_page); + + cache->rotation = rotation; + 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 (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 = 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 + dual_even_left) / 2) * uniform_height; + if (i + 1 < n_pages + 2) + cache->dual_height_to_page[i + 1] = ((i + 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_get_height (EvHeightToPageCache *cache, + EvDocument *document, + gint page, + gint rotation, + gdouble *height, + gdouble *dual_height) +{ + if (cache->rotation != rotation) + build_height_to_page (cache, document, rotation); + + *height = cache->height_to_page[page]; + *dual_height = cache->dual_height_to_page[page]; +} + +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); + build_height_to_page (cache, view->document, view->rotation); + 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) +{ + gdouble h, dh; + + if (!view->height_to_page_cache) + return; + + ev_height_to_page_cache_get_height (view->height_to_page_cache, + view->document, + page, + view->rotation, + &h, &dh); + if (height) + *height = (gint)(h * view->scale + 0.5); + + if (dual_height) + *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_size_request (sb, &req); + + return (orientation == GTK_ORIENTATION_VERTICAL ? req.width : req.height) + spacing; +} + +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 (view->dual_page) { + 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; + + 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; + + gtk_widget_get_allocation (widget, &allocation); + + if (orientation == GTK_ORIENTATION_HORIZONTAL) { + req_size = view->requisition.width; + alloc_size = allocation.width; + adjustment = view->hadjustment; + } else { + req_size = view->requisition.height; + alloc_size = allocation.height; + adjustment = view->vadjustment; + } + + 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); + + 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 + page_size * 0.5) / 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 - page_size * 0.5 + 0.5, + 0, upper - page_size); + gtk_adjustment_set_value (adjustment, (int)new_value); + break; + } + + gtk_adjustment_changed (adjustment); +} + +static void +view_update_range_and_current_page (EvView *view) +{ + gint start = view->start_page; + gint end = view->end_page; + + 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 (view->dual_page && 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 (view->current_page != best_current_page) { + view->current_page = best_current_page; + hide_loading_window (view); + ev_document_model_set_page (view->model, best_current_page); + } + } + } else if (view->dual_page) { + if (view->current_page % 2 == get_dual_even_left (view)) { + 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_page_cache_set_page_range (view->page_cache, + view->start_page, + view->end_page); + ev_pixbuf_cache_set_page_range (view->pixbuf_cache, + view->start_page, + view->end_page, + view->selection_info.selections); + + 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; + + if (orientation == GTK_ORIENTATION_HORIZONTAL) + to_set = &view->hadjustment; + else + to_set = &view->vadjustment; + + if (*to_set != adjustment) { + if (*to_set) { + g_signal_handlers_disconnect_by_func (*to_set, + (gpointer) on_adjustment_value_changed, + view); + g_object_unref (*to_set); + } + + *to_set = adjustment; + view_set_adjustment_values (view, orientation); + + if (*to_set) { + g_object_ref (*to_set); + g_signal_connect (*to_set, "value_changed", + G_CALLBACK (on_adjustment_value_changed), view); + } + } +} + +static void +ev_view_set_scroll_adjustments (GtkLayout *layout, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment) +{ + EvView *view = EV_VIEW (layout); + + set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment); + set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment); + + on_adjustment_value_changed (NULL, view); +} + +static void +add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GdkModifierType modifiers, + GtkScrollType scroll, + gboolean horizontal) +{ + guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; + + gtk_binding_entry_add_signal (binding_set, keyval, modifiers, + "binding_activated", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); + gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers, + "binding_activated", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); +} + +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; + 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; + + view->jump_to_find_result = FALSE; + + if (view->sizing_mode == EV_SIZING_BEST_FIT) { + 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); +} + +#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); + } + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +/*** Geometry computations ***/ + +static void +compute_border (EvView *view, int width, int height, GtkBorder *border) +{ + ev_document_misc_get_page_border_size (width, height, border); +} + +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 max_width, offset; + GtkBorder border; + + g_return_if_fail (y_offset != NULL); + + ev_view_get_max_page_size (view, &max_width, NULL); + compute_border (view, max_width, max_width, &border); + + if (view->dual_page) { + ev_view_get_height_to_page (view, page, NULL, &offset); + offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing + + ((page + get_dual_even_left (view)) / 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, width, height, 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; + + 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 (view->dual_page) { + x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing); + x = x + MAX (0, allocation.width - (max_width * 2 + view->spacing * 3)) / 2; + if (page % 2 == get_dual_even_left (view)) + 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; + if (view->dual_page) { + gint width_2, height_2; + gint max_width = width; + gint max_height = height; + GtkBorder overall_border; + gint other_page; + + other_page = (page % 2 == get_dual_even_left (view)) ? 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, max_width, max_height, &overall_border); + + /* Find the offsets */ + x = view->spacing; + y = view->spacing; + + /* Adjust for being the left or right page */ + if (page % 2 == get_dual_even_left (view)) + 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; + } +} + +static void +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; +} + +static void +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; +} + +static void +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; +} + +static void +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 gboolean +get_dual_even_left (EvView *view) +{ + return (ev_document_get_n_pages (view->document) > 2); +} + +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) +{ + gint page = -1; + gint x_offset = 0, y_offset = 0; + EvViewSelection *selection; + GList *l = NULL; + + for (l = view->selection_info.selections; l != NULL; l = l->next) { + selection = (EvViewSelection *)l->data; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + if (page != selection->page) + continue; + + if (selection->covered_region && + cairo_region_contains_point (selection->covered_region, x_offset, y_offset)) + return TRUE; + } + + 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); + doc_rect_to_view_rect (view, page, &mapping->area, area); + area->x -= view->scroll_x; + area->y -= view->scroll_y; +} + + +/*** Hyperref ***/ +static EvLink * +ev_view_get_link_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + 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_data (link_mapping, x_new, y_new); + else + return 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_best_fit (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_best_fit (doc_width, doc_height, + allocation.width, + allocation.height); + + ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT); + 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_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; +} + +/*** Forms ***/ +static EvFormField * +ev_view_get_form_field_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + 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_data (forms_mapping, x_new, y_new); + else + return 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 GtkWidget * +ev_view_form_field_button_create_widget (EvView *view, + EvFormField *field) +{ + EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field); + cairo_region_t *field_region = NULL; + + switch (field_button->type) { + case EV_FORM_FIELD_BUTTON_PUSH: + return NULL; + case EV_FORM_FIELD_BUTTON_CHECK: + case EV_FORM_FIELD_BUTTON_RADIO: { + gboolean state; + EvMappingList *forms_mapping; + GList *l; + + 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 NULL; + + field_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 (field_region, button_region); + cairo_region_destroy (button_region); + } + + ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document), + field, !state); + field_button->state = !state; + } + break; + } + + ev_view_reload_page (view, field->page->index, field_region); + cairo_region_destroy (field_region); + + 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 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, "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 (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_IS_COMBO_BOX_ENTRY (widget)) { + gchar *text; + + text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget)); + if (!field_choice->text || + (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) { + g_free (field_choice->text); + field_choice->text = 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_entry_new_with_model (model, 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; +} + +static void +ev_view_handle_form_field (EvView *view, + EvFormField *field, + gdouble x, + gdouble y) +{ + GtkWidget *field_widget = NULL; + EvMappingList *form_field_mapping; + GdkRectangle view_area; + + 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); + ev_view_get_area_from_mapping (view, field->page->index, + form_field_mapping, + field, &view_area); + + gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y); + gtk_widget_show (field_widget); + gtk_widget_grab_focus (field_widget); +} + +/* 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); + 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); + 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 EvAnnotation * +ev_view_get_annotation_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + 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_data (annotations_mapping, x_new, y_new); + else + return 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); + 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); + + 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); + } + + 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) +{ + GdkRectangle view_rect; + EvAnnotation *annot; + guint page; + + if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document)) + return; + + if (view->focus_annotation == annot_mapping) + return; + + view->focus_annotation = annot_mapping; + annot = (EvAnnotation *)annot_mapping->data; + + page = ev_annotation_get_page_index (annot); + ev_document_model_set_page (view->model, page); + + doc_rect_to_view_rect (view, page, + &annot_mapping->area, &view_rect); + ensure_rectangle_is_visible (view, &view_rect); + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +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; + gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); + ev_view_handle_cursor_over_xy (view, x, y); +} + +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); + g_free (link); + + return TRUE; + } + + return FALSE; +} + +/*** 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_BEST_FIT: + 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, max_width, max_width, &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_BEST_FIT: + 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, max_width, max_width, &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_BEST_FIT) { + 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, width, height, &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_BEST_FIT) { + requisition->width = 1; + requisition->height = 1; + + return; + } + + ev_view_get_page_size (view, view->current_page, &width, &height); + compute_border (view, width, height, &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); + + 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_BEST_FIT)) { + GtkAllocation allocation; + + gtk_widget_get_allocation (widget, &allocation); + ev_view_zoom_for_size (view, + allocation.width, + allocation.height); + } + + if (view->continuous && view->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 (view->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_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + EvView *view = EV_VIEW (widget); + GList *children, *l; + gint root_x, root_y; + + GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation); + + if (!view->document) + return; + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH || + view->sizing_mode == EV_SIZING_BEST_FIT) { + 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; + + children = gtk_container_get_children (GTK_CONTAINER (widget)); + for (l = children; l && l->data; l = g_list_next (l)) { + EvFormField *field; + GdkRectangle view_area; + EvMappingList *form_field_mapping; + GtkAllocation child_allocation; + GtkRequisition child_requisition; + GtkWidget *child = (GtkWidget *)l->data; + + field = g_object_get_data (G_OBJECT (child), "form-field"); + if (!field) + continue; + + form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, + field->page->index); + ev_view_get_area_from_mapping (view, field->page->index, + form_field_mapping, + field, &view_area); + + gtk_widget_size_request (child, &child_requisition); + if (child_requisition.width != view_area.width || + child_requisition.height != view_area.height) + gtk_widget_set_size_request (child, view_area.width, view_area.height); + + gtk_container_child_get (GTK_CONTAINER (widget), + child, + "x", &child_allocation.x, + "y", &child_allocation.y, + NULL); + if (child_allocation.x != view_area.x || + child_allocation.y != view_area.y) { + gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y); + } + } + g_list_free (children); + + 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; + } + 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 void +ev_view_realize (GtkWidget *widget) +{ + EvView *view = EV_VIEW (widget); + GdkWindow *bin_window; + GtkStyle *style; + + if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize) + (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget); + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + gdk_window_set_events (bin_window, + (gdk_window_get_events (bin_window) | + GDK_EXPOSURE_MASK | + GDK_BUTTON_PRESS_MASK | + GDK_BUTTON_RELEASE_MASK | + GDK_SCROLL_MASK | + GDK_KEY_PRESS_MASK | + GDK_POINTER_MOTION_MASK | + GDK_POINTER_MOTION_HINT_MASK | + GDK_ENTER_NOTIFY_MASK | + GDK_LEAVE_NOTIFY_MASK)); + + style = gtk_widget_get_style (widget); + gdk_window_set_background (bin_window, &style->mid[GTK_STATE_NORMAL]); + + on_adjustment_value_changed (NULL, view); +} + +static gboolean +ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event) +{ + EvView *view = EV_VIEW (widget); + guint state; + + 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); + if (event->direction == GDK_SCROLL_UP || + event->direction == GDK_SCROLL_LEFT) { + if (ev_view_can_zoom_in (view)) { + ev_view_zoom_in (view); + } + } else { + if (ev_view_can_zoom_out (view)) { + ev_view_zoom_out (view); + } + } + + 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; + + event->state &= ~GDK_SHIFT_MASK; + state &= ~GDK_SHIFT_MASK; + } + + if (state == 0 && view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous) { + switch (event->direction) { + case GDK_SCROLL_DOWN: + case GDK_SCROLL_RIGHT: + ev_view_next_page (view); + break; + case GDK_SCROLL_UP: + case GDK_SCROLL_LEFT: + ev_view_previous_page (view); + break; + } + + return TRUE; + } + + 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 gboolean +ev_view_expose_event (GtkWidget *widget, + GdkEventExpose *event) +{ + EvView *view = EV_VIEW (widget); + GdkWindow *bin_window; + cairo_t *cr; + gint i; + + if (view->loading) { + show_loading_window (view); + } else if (view->loading_window && + gtk_widget_get_visible (view->loading_window)) { + ev_view_loading_window_move (view); + } + + if (view->document == NULL) + return FALSE; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + cr = gdk_cairo_create (bin_window); + + 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, &(event->area), &page_ready); + + if (page_ready && view->find_pages && view->highlight_find_results) + highlight_find_results (view, i); + if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document)) + show_annotation_windows (view, i); + if (page_ready && view->focus_annotation) + focus_annotation (view, i, &event->area); + if (page_ready && view->synctex_result) + highlight_forward_search_results (view, i); + } + + cairo_destroy (cr); + + if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) + (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event); + + return FALSE; +} + +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; + + gtk_widget_get_pointer (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; +} + +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)); +} + +static gboolean +ev_view_button_press_event (GtkWidget *widget, + GdkEventButton *event) +{ + EvView *view = EV_VIEW (widget); + + if (!view->document) + return FALSE; + + if (!gtk_widget_has_focus (widget)) { + gtk_widget_grab_focus (widget); + } + + if (view->window_child_focus) { + EvAnnotationWindow *window; + EvAnnotation *annot; + + window = EV_ANNOTATION_WINDOW (view->window_child_focus->window); + annot = ev_annotation_window_get_annotation (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; + + 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 (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); + } + + gtk_widget_queue_draw (widget); + } 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, event->x, event->y); + } 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); + + if (view->synctex_result) { + g_free (view->synctex_result); + view->synctex_result = NULL; + gtk_widget_queue_draw (widget); + } + + if (view->focus_annotation) + view->focus_annotation = NULL; + + if (EV_IS_SELECTION (view->document)) + start_selection_for_event (view, event); + } + } + 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); + + return TRUE; + case 3: + view->scroll_info.start_y = event->y; + return ev_view_do_popup_menu (view, event->x, event->y); + } + + return FALSE; +} + +static void +ev_view_remove_all (EvView *view) +{ + 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); + gtk_widget_get_pointer (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; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + + if (event->is_hint || event->window != bin_window) { + gtk_widget_get_pointer (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 (widget, target_list, + GDK_ACTION_COPY, + 1, (GdkEvent *)event); + + 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 (widget, target_list, + GDK_ACTION_COPY, + 1, (GdkEvent *)event); + + view->image_dnd_info.in_drag = FALSE; + + gtk_target_list_unref (target_list); + + return TRUE; + } + } + + switch (view->pressed_button) { + case 1: + /* For the Evince 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->selection_info.in_selection = TRUE; + 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 (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); + + if (view->selection_info.in_drag) { + clear_selection (view); + gtk_widget_queue_draw (widget); + } + + 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_key_press_event (GtkWidget *widget, + GdkEventKey *event) +{ + EvView *view = EV_VIEW (widget); + + if (!view->document) + return FALSE; + + if (!gtk_widget_has_focus (widget)) { + /* Forward key events to current focused window child */ + if (view->window_child_focus) { + GdkEventKey *new_event; + gboolean handled; + + new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event); + g_object_unref (new_event->window); + new_event->window = gtk_widget_get_window (view->window_child_focus->window); + if (new_event->window) + g_object_ref (new_event->window); + gtk_widget_realize (view->window_child_focus->window); + handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event); + gdk_event_free ((GdkEvent *)new_event); + + return handled; + } + + return FALSE; + } + + return gtk_bindings_activate_event (GTK_OBJECT (widget), event); +} + +static gint +ev_view_focus_in (GtkWidget *widget, + GdkEventFocus *event) +{ + if (EV_VIEW (widget)->pixbuf_cache) + ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); + gtk_widget_queue_draw (widget); + + return FALSE; +} + +static gint +ev_view_focus_out (GtkWidget *widget, + GdkEventFocus *event) +{ + if (EV_VIEW (widget)->pixbuf_cache) + ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); + 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_set (GtkWidget *widget, + GtkStyle *old_style) +{ + if (EV_VIEW (widget)->pixbuf_cache) + ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); + + GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style); +} + +/*** Drawing ***/ + +static void +draw_rubberband (EvView *view, + GdkWindow *window, + const GdkRectangle *rect, + gdouble alpha) +{ + GtkStyle *style; + GdkColor *fill_color_gdk; + gdouble r, g, b; + cairo_t *cr; + + style = gtk_widget_get_style (GTK_WIDGET (view)); + fill_color_gdk = gdk_color_copy (&style->base[GTK_STATE_SELECTED]); + r = fill_color_gdk->red / 65535.; + g = fill_color_gdk->green / 65535.; + b = fill_color_gdk->blue / 65535.; + + cr = gdk_cairo_create (window); + + cairo_set_source_rgba (cr, r, g, b, 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, r, g, b); + cairo_stroke (cr); + + cairo_destroy (cr); + + gdk_color_free (fill_color_gdk); +} + + +static void +highlight_find_results (EvView *view, int page) +{ + gint i, n_results = 0; + GdkWindow *bin_window; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + + 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); + doc_rect_to_view_rect (view, page, rectangle, &view_rectangle); + draw_rubberband (view, bin_window, &view_rectangle, alpha); + } +} + +static void +highlight_forward_search_results (EvView *view, int page) +{ + GdkWindow *bin_window; + GdkRectangle rect; + cairo_t *cr; + EvMapping *mapping = view->synctex_result; + + if (GPOINTER_TO_INT (mapping->data) != page) + return; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + doc_rect_to_view_rect (view, page, &mapping->area, &rect); + + cr = gdk_cairo_create (bin_window); + 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_destroy (cr); +} + +static void +focus_annotation (EvView *view, + gint page, + GdkRectangle *clip) +{ + GtkWidget *widget = GTK_WIDGET (view); + GdkRectangle rect; + EvMapping *mapping = view->focus_annotation; + EvAnnotation *annot = (EvAnnotation *)mapping->data; + + if (ev_annotation_get_page_index (annot) != page) + return; + + doc_rect_to_view_rect (view, page, &mapping->area, &rect); + gtk_paint_focus (gtk_widget_get_style (widget), + gtk_layout_get_bin_window (GTK_LAYOUT (view)), + gtk_widget_get_state (widget), + NULL, widget, NULL, + rect.x - view->scroll_x, + rect.y - view->scroll_y, + rect.width + 1, rect.height + 1); +} + +static void +ev_view_loading_window_move (EvView *view) +{ + GtkWidget *widget = GTK_WIDGET (view); + EvLoadingWindow *window = EV_LOADING_WINDOW (view->loading_window); + gint root_x, root_y; + gint window_width; + GtkAllocation allocation; + + gtk_widget_get_allocation (widget, &allocation); + gdk_window_get_origin (gtk_widget_get_window (widget), &root_x, &root_y); + ev_loading_window_get_size (window, &window_width, NULL); + + root_x += allocation.width - window_width - 10; + root_y += 10; + + ev_loading_window_move (window, root_x, root_y); +} + +static gboolean +show_loading_window_cb (EvView *view) +{ + if (!view->loading_window) { + GtkWindow *parent; + GdkScreen *screen; + + parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view))); + view->loading_window = ev_loading_window_new (parent); + + /* Show the window off screen to get a valid size asap */ + screen = gtk_widget_get_screen (GTK_WIDGET (view)); + gtk_window_move (GTK_WINDOW (view->loading_window), + gdk_screen_get_width (screen) + 1, + gdk_screen_get_height (screen) + 1); + gtk_widget_show (view->loading_window); + } + + ev_view_loading_window_move (view); + + gtk_widget_show (view->loading_window); + + view->loading_timeout = 0; + + return FALSE; +} + +static void +show_loading_window (EvView *view) +{ + if (view->loading_window && gtk_widget_get_visible (view->loading_window)) { + ev_view_loading_window_move (view); + return; + } + + if (!view->loading_timeout) { + view->loading_timeout = + g_timeout_add_full (G_PRIORITY_LOW, + 0.5, (GSourceFunc)show_loading_window_cb, + view, NULL); + } +} + +static void +hide_loading_window (EvView *view) +{ + if (view->loading_timeout) { + g_source_remove (view->loading_timeout); + view->loading_timeout = 0; + } + + if (view->loading_window && gtk_widget_get_visible (view->loading_window)) { + gtk_widget_hide (view->loading_window); + } +} + +static void +draw_one_page (EvView *view, + gint page, + cairo_t *cr, + GdkRectangle *page_area, + GtkBorder *border, + GdkRectangle *expose_area, + gboolean *page_ready) +{ + GdkWindow *bin_window; + GdkRectangle overlap; + GdkRectangle real_page_area; + gint current_page; + gboolean inverted_colors; + + 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; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + current_page = ev_document_model_get_page (view->model); + inverted_colors = ev_document_model_get_inverted_colors (view->model); + ev_document_misc_paint_one_page (cr, + GTK_WIDGET (view), + page_area, border, + page == current_page, + inverted_colors); + + if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) { + gint width, height; + gint page_width, page_height; + cairo_surface_t *page_surface = NULL; + gint selection_width, selection_height; + cairo_surface_t *selection_surface = NULL; + + page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page); + + if (!page_surface) { + if (page == current_page) + show_loading_window (view); + + *page_ready = FALSE; + + return; + } + + if (page == current_page) + hide_loading_window (view); + + ev_view_get_page_size (view, page, &width, &height); + + page_width = cairo_image_surface_get_width (page_surface); + page_height = cairo_image_surface_get_height (page_surface); + + cairo_save (cr); + cairo_translate (cr, overlap.x, overlap.y); + + if (width != page_width || height != page_height) { + cairo_pattern_set_filter (cairo_get_source (cr), + CAIRO_FILTER_FAST); + cairo_scale (cr, + (gdouble)width / page_width, + (gdouble)height / page_height); + } + + cairo_surface_set_device_offset (page_surface, + overlap.x - real_page_area.x, + overlap.y - real_page_area.y); + cairo_set_source_surface (cr, page_surface, 0, 0); + cairo_paint (cr); + cairo_restore (cr); + + /* Get the selection pixbuf iff we have something to draw */ + if (find_selection_for_page (view, page) && + view->selection_mode == EV_VIEW_SELECTION_TEXT) { + selection_surface = + ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, + page, + view->scale, + NULL); + } + + if (!selection_surface) { + return; + } + + selection_width = cairo_image_surface_get_width (selection_surface); + selection_height = cairo_image_surface_get_height (selection_surface); + + cairo_save (cr); + cairo_translate (cr, overlap.x, overlap.y); + + if (width != selection_width || height != selection_height) { + cairo_pattern_set_filter (cairo_get_source (cr), + CAIRO_FILTER_FAST); + cairo_scale (cr, + (gdouble)width / selection_width, + (gdouble)height / selection_height); + } + + cairo_surface_set_device_offset (selection_surface, + overlap.x - real_page_area.x, + overlap.y - real_page_area.y); + + cairo_set_source_surface (cr, selection_surface, 0, 0); + cairo_paint (cr); + cairo_restore (cr); + } +} + +/*** GObject functions ***/ + +static void +ev_view_finalize (GObject *object) +{ + EvView *view = EV_VIEW (object); + + clear_selection (view); + 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_CLASS (ev_view_parent_class)->finalize (object); +} + +static void +ev_view_destroy (GtkObject *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->loading_timeout) { + g_source_remove (view->loading_timeout); + view->loading_timeout = 0; + } + + ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL); + + GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); +} + +static AtkObject * +ev_view_get_accessible (GtkWidget *widget) +{ + static gboolean first_time = TRUE; + + if (first_time) { + AtkObjectFactory *factory; + AtkRegistry *registry; + GType derived_type; + GType derived_atk_type; + + /* + * Figure out whether accessibility is enabled by looking at the + * type of the accessible object which would be created for + * the parent type of EvView. + */ + derived_type = g_type_parent (EV_TYPE_VIEW); + + registry = atk_get_default_registry (); + factory = atk_registry_get_factory (registry, + derived_type); + derived_atk_type = atk_object_factory_get_accessible_type (factory); + if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE)) { + atk_registry_set_factory_type (registry, + EV_TYPE_VIEW, + ev_view_accessible_factory_get_type ()); + EV_VIEW (widget)->a11y_enabled = TRUE; + } + first_time = FALSE; + } + return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget); +} + +static void +ev_view_class_init (EvViewClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class); + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); + GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class); + GtkBindingSet *binding_set; + + object_class->finalize = ev_view_finalize; + + widget_class->expose_event = ev_view_expose_event; + 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->size_request = ev_view_size_request; + widget_class->size_allocate = ev_view_size_allocate; + widget_class->realize = ev_view_realize; + 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_set = ev_view_style_set; + 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; + + gtk_object_class->destroy = ev_view_destroy; + + layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments; + + class->binding_activated = ev_view_scroll; + + signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, binding_activated), + NULL, NULL, + ev_view_marshal_VOID__ENUM_BOOLEAN, + G_TYPE_NONE, 2, + GTK_TYPE_SCROLL_TYPE, + G_TYPE_BOOLEAN); + 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); + + binding_set = gtk_binding_set_by_class (class); + + add_scroll_binding_keypad (binding_set, GDK_Left, 0, GTK_SCROLL_STEP_BACKWARD, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Left, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_BACKWARD, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_FORWARD, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Up, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Down, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, FALSE); + gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE); + gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE); + gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE); + gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE); + +} + +static void +ev_view_init (EvView *view) +{ + gtk_widget_set_can_focus (GTK_WIDGET (view), TRUE); + + 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_selection = FALSE; + view->selection_info.in_drag = FALSE; + view->selection_mode = EV_VIEW_SELECTION_TEXT; + view->continuous = TRUE; + view->dual_page = FALSE; + view->fullscreen = FALSE; + view->sizing_mode = EV_SIZING_FIT_WIDTH; + view->pending_scroll = SCROLL_TO_KEEP_POSITION; + view->jump_to_find_result = TRUE; + view->highlight_find_results = FALSE; + + gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL); + gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL); +} + +/*** 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; + + hide_loading_window (view); + + gtk_widget_get_pointer (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) { + GdkWindow *bin_window; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); +#if GTK_CHECK_VERSION(2, 90, 5) + gdk_window_invalidate_region (bin_window, region, TRUE); +#else + { + GdkRegion *gdk_region = gdk_region_new (); + guint n_recs = cairo_region_num_rectangles (region); + guint i; + + for (i = 0; i < n_recs; i++) { + cairo_rectangle_int_t rect; + + cairo_region_get_rectangle (region, i, &rect); + gdk_region_union_with_rect (gdk_region, (GdkRectangle *)&rect); + } + gdk_window_invalidate_region (bin_window, gdk_region, TRUE); + gdk_region_destroy (gdk_region); + } +#endif + } 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) +{ + int dx = 0, dy = 0; + gint x, y; + gint value; + GList *children, *l; + + if (!gtk_widget_get_realized (GTK_WIDGET (view))) + 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; + } + + children = gtk_container_get_children (GTK_CONTAINER (view)); + for (l = children; l && l->data; l = g_list_next (l)) { + gint child_x, child_y; + GtkWidget *child = (GtkWidget *)l->data; + + gtk_container_child_get (GTK_CONTAINER (view), + child, + "x", &child_x, + "y", &child_y, + NULL); + gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy); + } + g_list_free (children); + + 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 (GTK_WIDGET (view)); + } else { + GdkWindow *bin_window; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + gdk_window_scroll (bin_window, dx, dy); + } + + gtk_widget_get_pointer (GTK_WIDGET (view), &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); + if (view->a11y_enabled) { + EvJobPageDataFlags flags = ev_page_cache_get_flags (view->page_cache); + + ev_page_cache_set_flags (view->page_cache, + flags | + EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT | + EV_PAGE_DATA_INCLUDE_TEXT); + } + 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) + hide_loading_window (view); + view->loading = loading; + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +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; + } + + if (view->scroll_info.last_y > view->scroll_info.start_y && + (view->scroll_info.last_y < view->scroll_info.start_y)) + return TRUE; + + /* 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); + + gtk_widget_get_pointer (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; + } + + gtk_widget_get_pointer (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; + + clear_caches (view); + + if (view->document) { + g_object_unref (view->document); + } + + view->document = document; + view->find_result = 0; + + if (view->document) { + view->loading = FALSE; + g_object_ref (view->document); + 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)); +} + +#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_page_changed_cb (EvDocumentModel *model, + GParamSpec *pspec, + EvView *view) +{ + gboolean dual_page = ev_document_model_get_dual_page (model); + + view->dual_page = dual_page; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + /* FIXME: if we're keeping the pixbuf cache around, we should extend the + * preload_cache_size to be 2 if dual_page is set. + */ + 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->dual_page = ev_document_model_get_dual_page (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::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-page", + G_CALLBACK (ev_view_dual_page_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); +} + +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_in (EvView *view) +{ + 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) * ZOOM_IN_FACTOR; + ev_document_model_set_scale (view->model, scale); +} + +void +ev_view_zoom_out (EvView *view) +{ + 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) * ZOOM_OUT_FACTOR; + ev_document_model_set_scale (view->model, scale); +} + +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_best_fit (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 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, doc_width, doc_height, &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); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height); + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height); + else + 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, doc_width, doc_height, &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); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height); + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height); + else + 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; + + 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, width, height, &border); + + doc_width = doc_width * 2; + width -= ((border.left + border.right)* 2 + 3 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + gint sb_size; + + 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); + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); + else + 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; + + get_doc_page_size (view, view->current_page, &doc_width, &doc_height); + + /* Get an approximate border */ + compute_border (view, width, height, &border); + + width -= (border.left + border.right + 2 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + gint sb_size; + + 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); + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); + else + 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) +{ + g_return_if_fail (EV_IS_VIEW (view)); + g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH || + view->sizing_mode == EV_SIZING_BEST_FIT); + g_return_if_fail (width >= 0); + g_return_if_fail (height >= 0); + + if (view->document == NULL) + return; + + if (view->continuous && view->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 (view->dual_page) + ev_view_zoom_for_size_dual_page (view, width, height); + else + ev_view_zoom_for_size_single_page (view, width, height); +} + +/*** 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); + doc_rect_to_view_rect (view, page, rect, &view_rect); + ensure_rectangle_is_visible (view, &view_rect); + 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; + } + } +} + +void +ev_view_find_changed (EvView *view, GList **results, gint page) +{ + 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); + + 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 ***/ + +/* compute_new_selection_rect/text calculates the area currently selected by + * view_rect. each handles a different mode; + */ +static GList * +compute_new_selection_rect (EvView *view, + GdkPoint *start, + GdkPoint *stop) +{ + GdkRectangle view_rect; + int n_pages, i; + GList *list = NULL; + + g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE); + + view_rect.x = MIN (start->x, stop->x); + view_rect.y = MIN (start->y, stop->y); + view_rect.width = MAX (start->x, stop->x) - view_rect.x; + view_rect.width = MAX (start->y, stop->y) - view_rect.y; + + n_pages = ev_document_get_n_pages (view->document); + + for (i = 0; i < n_pages; i++) { + GdkRectangle page_area; + GtkBorder border; + + if (ev_view_get_page_extents (view, i, &page_area, &border)) { + GdkRectangle overlap; + + if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) { + EvViewSelection *selection; + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + view_rect_to_doc_rect (view, &overlap, &page_area, + &(selection->rect)); + + list = g_list_append (list, selection); + } + } + } + + return list; +} + +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 GList * +compute_new_selection_text (EvView *view, + EvSelectionStyle style, + GdkPoint *start, + GdkPoint *stop) +{ + int n_pages, i, first, last; + GList *list = NULL; + EvViewSelection *selection; + gdouble width, height; + int start_page, end_page; + + g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT); + + n_pages = ev_document_get_n_pages (view->document); + + /* First figure out the range of pages the selection + * affects. */ + first = n_pages; + last = 0; + if (view->continuous) { + start_page = 0; + end_page = n_pages; + } else if (view->dual_page) { + start_page = view->start_page; + end_page = view->end_page + 1; + } else { + start_page = view->current_page; + end_page = view->current_page + 1; + } + + for (i = start_page; i < end_page; i++) { + GdkRectangle page_area; + GtkBorder border; + + ev_view_get_page_extents (view, i, &page_area, &border); + if (gdk_rectangle_point_in (&page_area, start) || + gdk_rectangle_point_in (&page_area, stop)) { + if (first == n_pages) + first = i; + last = i; + } + + } + + /* 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 + 1; i++) { + GdkRectangle page_area; + GtkBorder border; + GdkPoint *point; + + get_doc_page_size (view, i, &width, &height); + + selection = g_new0 (EvViewSelection, 1); + 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); + + if (gdk_rectangle_point_in (&page_area, start)) + point = start; + else + point = stop; + + if (i == first) + view_point_to_doc_point (view, point, &page_area, + &selection->rect.x1, + &selection->rect.y1); + + /* 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) + view_point_to_doc_point (view, point, &page_area, + &selection->rect.x2, + &selection->rect.y2); + + list = g_list_append (list, selection); + } + + return 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_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); + g_list_free (view->selection_info.selections); + 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 = NULL; + + ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, + cur_page, + view->scale, + &tmp_region); + + if (tmp_region && !cairo_region_is_empty (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) { + /* We only want to redraw the areas that have + * changed, so we xor the old and new regions + * and redraw if it's different */ + region = cairo_region_copy (old_sel->covered_region); +#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 9, 12) + cairo_region_xor (region, new_sel->covered_region); +#else + cairo_region_t *tbr; + tbr = cairo_region_copy (new_sel->covered_region); + + /* xor old_sel, new_sel*/ + cairo_region_subtract (tbr, region); + cairo_region_subtract (region, new_sel->covered_region); + cairo_region_union (region, tbr); + cairo_region_destroy (tbr); +#endif + + if (cairo_region_is_empty (region)) { + cairo_region_destroy (region); + region = NULL; + } else { + gint num_rectangles = cairo_region_num_rectangles (region); + GdkRectangle r; + + /* We need to make the damage region a little bigger + * because the edges of the old selection might change + */ + cairo_region_get_rectangle (region, 0, &r); + r.x -= 5; + r.width = 5; + cairo_region_union_rectangle (region, &r); + + cairo_region_get_rectangle (region, num_rectangles - 1, &r); + r.x += r.width; + r.width = 5; + cairo_region_union_rectangle (region, &r); + } + } else if (old_sel->covered_region) { + region = cairo_region_copy (old_sel->covered_region); + } else if (new_sel->covered_region) { + region = cairo_region_copy (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_copy (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_copy (new_sel->covered_region); + } + } else { + g_assert_not_reached (); + } + + /* Redraw the damaged region! */ + if (region) { + GdkWindow *bin_window; + GdkRectangle page_area; + GtkBorder border; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + ev_view_get_page_extents (view, cur_page, &page_area, &border); + cairo_region_translate (region, + page_area.x + border.left - view->scroll_x, + page_area.y + border.top - view->scroll_y); +#if GTK_CHECK_VERSION(2, 90, 5) + gdk_window_invalidate_region (bin_window, region, TRUE); +#else + { + GdkRegion *gdk_region = gdk_region_new (); + guint n_recs = cairo_region_num_rectangles (region); + guint i; + + for (i = 0; i < n_recs; i++) { + cairo_rectangle_int_t rect; + + cairo_region_get_rectangle (region, i, &rect); + gdk_region_union_with_rect (gdk_region, (GdkRectangle *)&rect); + } + gdk_window_invalidate_region (bin_window, gdk_region, TRUE); + gdk_region_destroy (gdk_region); + } +#endif + cairo_region_destroy (region); + } + } + + /* Free the old list, now that we're done with it. */ + g_list_foreach (old_list, (GFunc) selection_free, NULL); + g_list_free (old_list); +} + +static void +compute_selections (EvView *view, + EvSelectionStyle style, + GdkPoint *start, + GdkPoint *stop) +{ + GList *list; + + if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE) + list = compute_new_selection_rect (view, start, stop); + else + list = compute_new_selection_text (view, style, start, stop); + merge_selection_region (view, list); +} + +/* 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_free (selection); +} + +static void +clear_selection (EvView *view) +{ + if (view->selection_info.selections) { + g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); + g_list_free (view->selection_info.selections); + view->selection_info.selections = NULL; + + g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL); + } + view->selection_info.in_selection = FALSE; + if (view->pixbuf_cache) + ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, 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; + + clear_selection (view); + + 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_new0 (EvViewSelection, 1); + 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_append (selections, selection); + } + + merge_selection_region (view, selections); + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +gboolean +ev_view_get_has_selection (EvView *view) +{ + return view->selection_info.selections != NULL; +} + +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) +{ + GdkCursor *cursor = NULL; + GtkWidget *widget; + GdkWindow *bin_window; + + if (view->cursor == new_cursor) { + return; + } + + view->cursor = new_cursor; + + bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view)); + widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); + cursor = ev_view_cursor_new (gtk_widget_get_display (widget), new_cursor); + gdk_window_set_cursor (bin_window, cursor); + gdk_flush (); + if (cursor) + gdk_cursor_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) +{ + int page, n_pages; + + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + if (!view->document) + return FALSE; + + page = ev_document_model_get_page (view->model); + n_pages = ev_document_get_n_pages (view->document); + + if (view->dual_page) + page = page + 2; + else + page = page + 1; + + if (page < n_pages) { + ev_document_model_set_page (view->model, page); + return TRUE; + } else if (view->dual_page && page == n_pages) { + ev_document_model_set_page (view->model, page - 1); + return TRUE; + } else { + return FALSE; + } +} + +gboolean +ev_view_previous_page (EvView *view) +{ + int page; + + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + if (!view->document) + return FALSE; + + page = ev_document_model_get_page (view->model); + + if (view->dual_page) + page = page - 2; + else + page = page - 1; + + if (page >= 0) { + ev_document_model_set_page (view->model, page); + return TRUE; + } else if (view->dual_page && page == -1) { + ev_document_model_set_page (view->model, 0); + return TRUE; + } else { + return FALSE; + } +} + |