diff options
Diffstat (limited to 'shell/ev-sidebar-thumbnails.c')
| -rw-r--r-- | shell/ev-sidebar-thumbnails.c | 974 |
1 files changed, 974 insertions, 0 deletions
diff --git a/shell/ev-sidebar-thumbnails.c b/shell/ev-sidebar-thumbnails.c new file mode 100644 index 00000000..65fb3141 --- /dev/null +++ b/shell/ev-sidebar-thumbnails.c @@ -0,0 +1,974 @@ +/* this file is part of evince, a mate document viewer + * + * Copyright (C) 2004 Red Hat, Inc. + * Copyright (C) 2004, 2005 Anders Carlsson <[email protected]> + * + * Authors: + * Jonathan Blandford <[email protected]> + * Anders Carlsson <[email protected]> + * + * 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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> + +#include <glib/gi18n.h> +#include <gtk/gtk.h> + +#include "ev-document-misc.h" +#include "ev-document-thumbnails.h" +#include "ev-job-scheduler.h" +#include "ev-sidebar-page.h" +#include "ev-sidebar-thumbnails.h" +#include "ev-utils.h" +#include "ev-window.h" + +#define THUMBNAIL_WIDTH 100 + +/* The IconView doesn't scale nearly as well as the TreeView, so we arbitrarily + * limit its use */ +#define MAX_ICON_VIEW_PAGE_COUNT 1500 + +typedef struct _EvThumbsSize +{ + gint width; + gint height; +} EvThumbsSize; + +typedef struct _EvThumbsSizeCache { + gboolean uniform; + gint uniform_width; + gint uniform_height; + EvThumbsSize *sizes; +} EvThumbsSizeCache; + +struct _EvSidebarThumbnailsPrivate { + GtkWidget *swindow; + GtkWidget *icon_view; + GtkWidget *tree_view; + GtkAdjustment *vadjustment; + GtkListStore *list_store; + GHashTable *loading_icons; + EvDocument *document; + EvDocumentModel *model; + EvThumbsSizeCache *size_cache; + + gint n_pages, pages_done; + + int rotation; + gboolean inverted_colors; + + /* Visible pages */ + gint start_page, end_page; +}; + +enum { + COLUMN_PAGE_STRING, + COLUMN_PIXBUF, + COLUMN_THUMBNAIL_SET, + COLUMN_JOB, + NUM_COLUMNS +}; + +enum { + PROP_0, + PROP_WIDGET, +}; + +static void ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar); +static gboolean ev_sidebar_thumbnails_support_document (EvSidebarPage *sidebar_page, + EvDocument *document); +static void ev_sidebar_thumbnails_page_iface_init (EvSidebarPageInterface *iface); +static const gchar* ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page); +static void thumbnail_job_completed_callback (EvJobThumbnail *job, + EvSidebarThumbnails *sidebar_thumbnails); +static void adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails); + +G_DEFINE_TYPE_EXTENDED (EvSidebarThumbnails, + ev_sidebar_thumbnails, + GTK_TYPE_VBOX, + 0, + G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE, + ev_sidebar_thumbnails_page_iface_init)) + +#define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \ + (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate)); + +/* Thumbnails dimensions cache */ +#define EV_THUMBNAILS_SIZE_CACHE_KEY "ev-thumbnails-size-cache" + +static EvThumbsSizeCache * +ev_thumbnails_size_cache_new (EvDocument *document) +{ + EvThumbsSizeCache *cache; + EvRenderContext *rc = NULL; + gint i, n_pages; + EvThumbsSize *thumb_size; + + cache = g_new0 (EvThumbsSizeCache, 1); + + n_pages = ev_document_get_n_pages (document); + + /* Assume all pages are the same size until proven otherwise */ + cache->uniform = TRUE; + + for (i = 0; i < n_pages; i++) { + EvPage *page; + gdouble page_width, page_height; + gint thumb_width = 0; + gint thumb_height = 0; + + page = ev_document_get_page (document, i); + + ev_document_get_page_size (document, i, &page_width, &page_height); + + if (!rc) { + rc = ev_render_context_new (page, 0, (gdouble)THUMBNAIL_WIDTH / page_width); + } else { + ev_render_context_set_page (rc, page); + ev_render_context_set_scale (rc, (gdouble)THUMBNAIL_WIDTH / page_width); + } + + ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (document), + rc, &thumb_width, &thumb_height); + + if (i == 0) { + cache->uniform_width = thumb_width; + cache->uniform_height = thumb_height; + } else if (cache->uniform && + (cache->uniform_width != thumb_width || + cache->uniform_height != thumb_height)) { + /* It's a different thumbnail size. Backfill the array. */ + int j; + + cache->sizes = g_new0 (EvThumbsSize, n_pages); + + for (j = 0; j < i; j++) { + thumb_size = &(cache->sizes[j]); + thumb_size->width = cache->uniform_width; + thumb_size->height = cache->uniform_height; + } + cache->uniform = FALSE; + } + + if (! cache->uniform) { + thumb_size = &(cache->sizes[i]); + + thumb_size->width = thumb_width; + thumb_size->height = thumb_height; + } + + g_object_unref (page); + } + + if (rc) { + g_object_unref (rc); + } + + return cache; +} + +static void +ev_thumbnails_size_cache_get_size (EvThumbsSizeCache *cache, + gint page, + gint rotation, + gint *width, + gint *height) +{ + gint w, h; + + if (cache->uniform) { + w = cache->uniform_width; + h = cache->uniform_height; + } else { + EvThumbsSize *thumb_size; + + thumb_size = &(cache->sizes[page]); + + w = thumb_size->width; + h = thumb_size->height; + } + + if (rotation == 0 || rotation == 180) { + if (width) *width = w; + if (height) *height = h; + } else { + if (width) *width = h; + if (height) *height = w; + } +} + +static void +ev_thumbnails_size_cache_free (EvThumbsSizeCache *cache) +{ + if (cache->sizes) { + g_free (cache->sizes); + cache->sizes = NULL; + } + + g_free (cache); +} + +static EvThumbsSizeCache * +ev_thumbnails_size_cache_get (EvDocument *document) +{ + EvThumbsSizeCache *cache; + + cache = g_object_get_data (G_OBJECT (document), EV_THUMBNAILS_SIZE_CACHE_KEY); + if (!cache) { + cache = ev_thumbnails_size_cache_new (document); + g_object_set_data_full (G_OBJECT (document), + EV_THUMBNAILS_SIZE_CACHE_KEY, + cache, + (GDestroyNotify)ev_thumbnails_size_cache_free); + } + + return cache; +} + + +static void +ev_sidebar_thumbnails_dispose (GObject *object) +{ + EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object); + + if (sidebar_thumbnails->priv->loading_icons) { + g_hash_table_destroy (sidebar_thumbnails->priv->loading_icons); + sidebar_thumbnails->priv->loading_icons = NULL; + } + + if (sidebar_thumbnails->priv->list_store) { + ev_sidebar_thumbnails_clear_model (sidebar_thumbnails); + g_object_unref (sidebar_thumbnails->priv->list_store); + sidebar_thumbnails->priv->list_store = NULL; + } + + G_OBJECT_CLASS (ev_sidebar_thumbnails_parent_class)->dispose (object); +} + +static void +ev_sidebar_thumbnails_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvSidebarThumbnails *sidebar = EV_SIDEBAR_THUMBNAILS (object); + + switch (prop_id) { + case PROP_WIDGET: + if (sidebar->priv->tree_view) + g_value_set_object (value, sidebar->priv->tree_view); + else + g_value_set_object (value, sidebar->priv->icon_view); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +ev_sidebar_thumbnails_map (GtkWidget *widget) +{ + EvSidebarThumbnails *sidebar; + + sidebar = EV_SIDEBAR_THUMBNAILS (widget); + + GTK_WIDGET_CLASS (ev_sidebar_thumbnails_parent_class)->map (widget); + + adjustment_changed_cb (sidebar); +} + +static void +ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class) +{ + GObjectClass *g_object_class; + GtkObjectClass *gtk_object_class; + GtkWidgetClass *widget_class; + + g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class); + gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class); + widget_class = GTK_WIDGET_CLASS (ev_sidebar_thumbnails_class); + + g_object_class->dispose = ev_sidebar_thumbnails_dispose; + g_object_class->get_property = ev_sidebar_thumbnails_get_property; + widget_class->map = ev_sidebar_thumbnails_map; + + g_object_class_override_property (g_object_class, + PROP_WIDGET, + "main-widget"); + + g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate)); +} + +GtkWidget * +ev_sidebar_thumbnails_new (void) +{ + GtkWidget *ev_sidebar_thumbnails; + + ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL); + + return ev_sidebar_thumbnails; +} + +static GdkPixbuf * +ev_sidebar_thumbnails_get_loading_icon (EvSidebarThumbnails *sidebar_thumbnails, + gint width, + gint height) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + GdkPixbuf *icon; + gchar *key; + + key = g_strdup_printf ("%dx%d", width, height); + icon = g_hash_table_lookup (priv->loading_icons, key); + if (!icon) { + gboolean inverted_colors; + + inverted_colors = ev_document_model_get_inverted_colors (priv->model); + icon = ev_document_misc_get_loading_thumbnail (width, height, inverted_colors); + g_hash_table_insert (priv->loading_icons, key, icon); + } else { + g_free (key); + } + + return icon; +} + +static void +clear_range (EvSidebarThumbnails *sidebar_thumbnails, + gint start_page, + gint end_page) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + GtkTreePath *path; + GtkTreeIter iter; + gboolean result; + gint prev_width = -1; + gint prev_height = -1; + + g_assert (start_page <= end_page); + + path = gtk_tree_path_new_from_indices (start_page, -1); + for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path); + result && start_page <= end_page; + result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) { + EvJobThumbnail *job; + GdkPixbuf *loading_icon = NULL; + gint width, height; + + gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), + &iter, + COLUMN_JOB, &job, + -1); + + if (job) { + g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails); + ev_job_cancel (EV_JOB (job)); + g_object_unref (job); + } + + ev_thumbnails_size_cache_get_size (priv->size_cache, start_page, + priv->rotation, + &width, &height); + if (!loading_icon || (width != prev_width && height != prev_height)) { + loading_icon = + ev_sidebar_thumbnails_get_loading_icon (sidebar_thumbnails, + width, height); + } + + prev_width = width; + prev_height = height; + + gtk_list_store_set (priv->list_store, &iter, + COLUMN_JOB, NULL, + COLUMN_THUMBNAIL_SET, FALSE, + COLUMN_PIXBUF, loading_icon, + -1); + } + gtk_tree_path_free (path); +} + +static gdouble +get_scale_for_page (EvSidebarThumbnails *sidebar_thumbnails, + gint page) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + gdouble width; + + ev_document_get_page_size (priv->document, page, &width, NULL); + + return (gdouble)THUMBNAIL_WIDTH / width; +} + +static void +add_range (EvSidebarThumbnails *sidebar_thumbnails, + gint start_page, + gint end_page) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + GtkTreePath *path; + GtkTreeIter iter; + gboolean result; + gint page = start_page; + + g_assert (start_page <= end_page); + + path = gtk_tree_path_new_from_indices (start_page, -1); + for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path); + result && page <= end_page; + result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) { + EvJob *job; + gboolean thumbnail_set; + + gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter, + COLUMN_JOB, &job, + COLUMN_THUMBNAIL_SET, &thumbnail_set, + -1); + + if (job == NULL && !thumbnail_set) { + job = ev_job_thumbnail_new (priv->document, + page, priv->rotation, + get_scale_for_page (sidebar_thumbnails, page)); + ev_job_scheduler_push_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH); + + g_object_set_data_full (G_OBJECT (job), "tree_iter", + gtk_tree_iter_copy (&iter), + (GDestroyNotify) gtk_tree_iter_free); + g_signal_connect (job, "finished", + G_CALLBACK (thumbnail_job_completed_callback), + sidebar_thumbnails); + gtk_list_store_set (priv->list_store, &iter, + COLUMN_JOB, job, + -1); + + /* The queue and the list own a ref to the job now */ + g_object_unref (job); + } else if (job) { + g_object_unref (job); + } + } + gtk_tree_path_free (path); +} + +/* This modifies start */ +static void +update_visible_range (EvSidebarThumbnails *sidebar_thumbnails, + gint start_page, + gint end_page) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + int old_start_page, old_end_page; + + old_start_page = priv->start_page; + old_end_page = priv->end_page; + + if (start_page == old_start_page && + end_page == old_end_page) + return; + + /* Clear the areas we no longer display */ + if (old_start_page >= 0 && old_start_page < start_page) + clear_range (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page)); + + if (old_end_page > 0 && old_end_page > end_page) + clear_range (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page); + + add_range (sidebar_thumbnails, start_page, end_page); + + priv->start_page = start_page; + priv->end_page = end_page; +} + +static void +adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + GtkTreePath *path = NULL; + GtkTreePath *path2 = NULL; + gdouble page_size; + gdouble value; + gint wy1; + gint wy2; + + /* Widget is not currently visible */ + if (!gtk_widget_get_mapped (GTK_WIDGET (sidebar_thumbnails))) + return; + + page_size = gtk_adjustment_get_page_size (priv->vadjustment); + + if (page_size == 0) + return; + + value = gtk_adjustment_get_value (priv->vadjustment); + + if (priv->tree_view) { + if (! gtk_widget_get_realized (priv->tree_view)) + return; + + gtk_tree_view_convert_tree_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view), + 0, (int) value, + NULL, &wy1); + gtk_tree_view_convert_tree_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view), + 0, (int) (value + page_size), + NULL, &wy2); + gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view), + 1, wy1 + 1, &path, + NULL, NULL, NULL); + gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view), + 1, wy2 -1, &path2, + NULL, NULL, NULL); + } else if (priv->icon_view) { + if (! gtk_widget_get_realized (priv->icon_view)) + return; + if (! gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2)) + return; + } else { + return; + } + + if (path && path2) { + update_visible_range (sidebar_thumbnails, + gtk_tree_path_get_indices (path)[0], + gtk_tree_path_get_indices (path2)[0]); + } + + gtk_tree_path_free (path); + gtk_tree_path_free (path2); +} + +static void +ev_sidebar_thumbnails_fill_model (EvSidebarThumbnails *sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + GtkTreeIter iter; + int i; + gint prev_width = -1; + gint prev_height = -1; + + for (i = 0; i < sidebar_thumbnails->priv->n_pages; i++) { + gchar *page_label; + gchar *page_string; + GdkPixbuf *loading_icon = NULL; + gint width, height; + + page_label = ev_document_get_page_label (priv->document, i); + page_string = g_markup_printf_escaped ("<i>%s</i>", page_label); + ev_thumbnails_size_cache_get_size (sidebar_thumbnails->priv->size_cache, i, + sidebar_thumbnails->priv->rotation, + &width, &height); + if (!loading_icon || (width != prev_width && height != prev_height)) { + loading_icon = + ev_sidebar_thumbnails_get_loading_icon (sidebar_thumbnails, + width, height); + } + + prev_width = width; + prev_height = height; + + gtk_list_store_append (priv->list_store, &iter); + gtk_list_store_set (priv->list_store, &iter, + COLUMN_PAGE_STRING, page_string, + COLUMN_PIXBUF, loading_icon, + COLUMN_THUMBNAIL_SET, FALSE, + -1); + g_free (page_label); + g_free (page_string); + } +} + +static void +ev_sidebar_tree_selection_changed (GtkTreeSelection *selection, + EvSidebarThumbnails *ev_sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv; + GtkTreePath *path; + GtkTreeIter iter; + int page; + + if (!gtk_tree_selection_get_selected (selection, NULL, &iter)) + return; + + path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->list_store), + &iter); + page = gtk_tree_path_get_indices (path)[0]; + gtk_tree_path_free (path); + + ev_document_model_set_page (priv->model, page); +} + +static void +ev_sidebar_icon_selection_changed (GtkIconView *icon_view, + EvSidebarThumbnails *ev_sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv; + GtkTreePath *path; + GList *selected; + int page; + + selected = gtk_icon_view_get_selected_items (icon_view); + if (selected == NULL) + return; + + /* We don't handle or expect multiple selection. */ + g_assert (selected->next == NULL); + + path = selected->data; + page = gtk_tree_path_get_indices (path)[0]; + + gtk_tree_path_free (path); + g_list_free (selected); + + ev_document_model_set_page (priv->model, page); +} + +static void +ev_sidebar_init_tree_view (EvSidebarThumbnails *ev_sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv; + GtkTreeSelection *selection; + GtkCellRenderer *renderer; + + priv = ev_sidebar_thumbnails->priv; + priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store)); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view)); + g_signal_connect (selection, "changed", + G_CALLBACK (ev_sidebar_tree_selection_changed), ev_sidebar_thumbnails); + gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE); + renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF, + "xpad", 2, + "ypad", 2, + NULL); + gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1, + NULL, renderer, + "pixbuf", 1, + NULL); + gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1, + NULL, gtk_cell_renderer_text_new (), + "markup", 0, NULL); + gtk_container_add (GTK_CONTAINER (priv->swindow), priv->tree_view); + gtk_widget_show (priv->tree_view); +} + +static void +ev_sidebar_init_icon_view (EvSidebarThumbnails *ev_sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv; + + priv = ev_sidebar_thumbnails->priv; + + priv->icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (priv->list_store)); + gtk_icon_view_set_markup_column (GTK_ICON_VIEW (priv->icon_view), 0); + gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (priv->icon_view), 1); + g_signal_connect (priv->icon_view, "selection-changed", + G_CALLBACK (ev_sidebar_icon_selection_changed), ev_sidebar_thumbnails); + + gtk_container_add (GTK_CONTAINER (priv->swindow), priv->icon_view); + gtk_widget_show (priv->icon_view); +} + +static gboolean +ev_sidebar_thumbnails_use_icon_view (EvSidebarThumbnails *sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + + return (ev_document_get_n_pages (priv->document) <= MAX_ICON_VIEW_PAGE_COUNT); +} + +static void +ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv; + + priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails); + + priv->list_store = gtk_list_store_new (NUM_COLUMNS, + G_TYPE_STRING, + GDK_TYPE_PIXBUF, + G_TYPE_BOOLEAN, + EV_TYPE_JOB_THUMBNAIL); + + priv->swindow = gtk_scrolled_window_new (NULL, NULL); + + /* We actually don't want GTK_POLICY_AUTOMATIC for horizontal scrollbar here + * it's just a workaround for bug #449462 + */ + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->swindow), + GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); + gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->swindow), + GTK_SHADOW_IN); + priv->vadjustment = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->swindow)); + g_signal_connect_data (priv->vadjustment, "value-changed", + G_CALLBACK (adjustment_changed_cb), + ev_sidebar_thumbnails, NULL, + G_CONNECT_SWAPPED | G_CONNECT_AFTER); + g_signal_connect_swapped (priv->swindow, "size-allocate", + G_CALLBACK (adjustment_changed_cb), + ev_sidebar_thumbnails); + gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), priv->swindow, TRUE, TRUE, 0); + + /* Put it all together */ + gtk_widget_show_all (priv->swindow); +} + +static void +ev_sidebar_thumbnails_set_current_page (EvSidebarThumbnails *sidebar, + gint page) +{ + GtkTreeView *tree_view; + GtkTreePath *path; + + path = gtk_tree_path_new_from_indices (page, -1); + + if (sidebar->priv->tree_view) { + tree_view = GTK_TREE_VIEW (sidebar->priv->tree_view); + gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE); + gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0); + } else if (sidebar->priv->icon_view) { + + g_signal_handlers_block_by_func + (sidebar->priv->icon_view, + G_CALLBACK (ev_sidebar_icon_selection_changed), sidebar); + + gtk_icon_view_select_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path); + + g_signal_handlers_unblock_by_func + (sidebar->priv->icon_view, + G_CALLBACK (ev_sidebar_icon_selection_changed), sidebar); + + gtk_icon_view_set_cursor (GTK_ICON_VIEW (sidebar->priv->icon_view), path, NULL, FALSE); + } + + gtk_tree_path_free (path); +} + +static void +page_changed_cb (EvSidebarThumbnails *sidebar, + gint old_page, + gint new_page) +{ + ev_sidebar_thumbnails_set_current_page (sidebar, new_page); +} + +static gboolean +refresh (EvSidebarThumbnails *sidebar_thumbnails) +{ + adjustment_changed_cb (sidebar_thumbnails); + return FALSE; +} + +static void +ev_sidebar_thumbnails_reload (EvSidebarThumbnails *sidebar_thumbnails) +{ + EvDocumentModel *model; + + if (sidebar_thumbnails->priv->loading_icons) + g_hash_table_remove_all (sidebar_thumbnails->priv->loading_icons); + + if (sidebar_thumbnails->priv->document == NULL || + sidebar_thumbnails->priv->n_pages <= 0) + return; + + model = sidebar_thumbnails->priv->model; + + ev_sidebar_thumbnails_clear_model (sidebar_thumbnails); + ev_sidebar_thumbnails_fill_model (sidebar_thumbnails); + + /* Trigger a redraw */ + sidebar_thumbnails->priv->start_page = -1; + sidebar_thumbnails->priv->end_page = -1; + ev_sidebar_thumbnails_set_current_page (sidebar_thumbnails, + ev_document_model_get_page (model)); + g_idle_add ((GSourceFunc)refresh, sidebar_thumbnails); +} + +static void +ev_sidebar_thumbnails_rotation_changed_cb (EvDocumentModel *model, + GParamSpec *pspec, + EvSidebarThumbnails *sidebar_thumbnails) +{ + gint rotation = ev_document_model_get_rotation (model); + + sidebar_thumbnails->priv->rotation = rotation; + ev_sidebar_thumbnails_reload (sidebar_thumbnails); +} + +static void +ev_sidebar_thumbnails_inverted_colors_changed_cb (EvDocumentModel *model, + GParamSpec *pspec, + EvSidebarThumbnails *sidebar_thumbnails) +{ + gboolean inverted_colors = ev_document_model_get_inverted_colors (model); + + sidebar_thumbnails->priv->inverted_colors = inverted_colors; + ev_sidebar_thumbnails_reload (sidebar_thumbnails); +} + +static void +thumbnail_job_completed_callback (EvJobThumbnail *job, + EvSidebarThumbnails *sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + GtkTreeIter *iter; + + iter = (GtkTreeIter *) g_object_get_data (G_OBJECT (job), "tree_iter"); + if (priv->inverted_colors) + ev_document_misc_invert_pixbuf (job->thumbnail); + gtk_list_store_set (priv->list_store, + iter, + COLUMN_PIXBUF, job->thumbnail, + COLUMN_THUMBNAIL_SET, TRUE, + COLUMN_JOB, NULL, + -1); +} + +static void +ev_sidebar_thumbnails_document_changed_cb (EvDocumentModel *model, + GParamSpec *pspec, + EvSidebarThumbnails *sidebar_thumbnails) +{ + EvDocument *document = ev_document_model_get_document (model); + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + + if (!EV_IS_DOCUMENT_THUMBNAILS (document) || + ev_document_get_n_pages (document) <= 0 || + !ev_document_check_dimensions (document)) { + return; + } + + priv->size_cache = ev_thumbnails_size_cache_get (document); + priv->document = document; + priv->n_pages = ev_document_get_n_pages (document); + priv->rotation = ev_document_model_get_rotation (model); + priv->inverted_colors = ev_document_model_get_inverted_colors (model); + priv->loading_icons = g_hash_table_new_full (g_str_hash, + g_str_equal, + (GDestroyNotify)g_free, + (GDestroyNotify)g_object_unref); + + ev_sidebar_thumbnails_clear_model (sidebar_thumbnails); + ev_sidebar_thumbnails_fill_model (sidebar_thumbnails); + + /* Create the view widget, and remove the old one, if needed */ + if (ev_sidebar_thumbnails_use_icon_view (sidebar_thumbnails)) { + if (priv->tree_view) { + gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->tree_view); + priv->tree_view = NULL; + } + + if (! priv->icon_view) { + ev_sidebar_init_icon_view (sidebar_thumbnails); + g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget"); + } else { + gtk_widget_queue_resize (priv->icon_view); + } + } else { + if (priv->icon_view) { + gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->icon_view); + priv->icon_view = NULL; + } + + if (! priv->tree_view) { + ev_sidebar_init_tree_view (sidebar_thumbnails); + g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget"); + } + } + + /* Connect to the signal and trigger a fake callback */ + g_signal_connect_swapped (priv->model, "page-changed", + G_CALLBACK (page_changed_cb), + sidebar_thumbnails); + g_signal_connect (priv->model, "notify::rotation", + G_CALLBACK (ev_sidebar_thumbnails_rotation_changed_cb), + sidebar_thumbnails); + g_signal_connect (priv->model, "notify::inverted-colors", + G_CALLBACK (ev_sidebar_thumbnails_inverted_colors_changed_cb), + sidebar_thumbnails); + sidebar_thumbnails->priv->start_page = -1; + sidebar_thumbnails->priv->end_page = -1; + ev_sidebar_thumbnails_set_current_page (sidebar_thumbnails, + ev_document_model_get_page (model)); + adjustment_changed_cb (sidebar_thumbnails); +} + +static void +ev_sidebar_thumbnails_set_model (EvSidebarPage *sidebar_page, + EvDocumentModel *model) +{ + EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (sidebar_page); + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + + if (priv->model == model) + return; + + priv->model = model; + g_signal_connect (model, "notify::document", + G_CALLBACK (ev_sidebar_thumbnails_document_changed_cb), + sidebar_page); +} + +static gboolean +ev_sidebar_thumbnails_clear_job (GtkTreeModel *model, + GtkTreePath *path, + GtkTreeIter *iter, + gpointer data) +{ + EvJob *job; + + gtk_tree_model_get (model, iter, COLUMN_JOB, &job, -1); + + if (job != NULL) { + ev_job_cancel (job); + g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, data); + g_object_unref (job); + } + + return FALSE; +} + +static void +ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar_thumbnails) +{ + EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv; + + gtk_tree_model_foreach (GTK_TREE_MODEL (priv->list_store), ev_sidebar_thumbnails_clear_job, sidebar_thumbnails); + gtk_list_store_clear (priv->list_store); +} + +static gboolean +ev_sidebar_thumbnails_support_document (EvSidebarPage *sidebar_page, + EvDocument *document) +{ + return (EV_IS_DOCUMENT_THUMBNAILS (document)); +} + +static const gchar* +ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page) +{ + return _("Thumbnails"); +} + +static void +ev_sidebar_thumbnails_page_iface_init (EvSidebarPageInterface *iface) +{ + iface->support_document = ev_sidebar_thumbnails_support_document; + iface->set_model = ev_sidebar_thumbnails_set_model; + iface->get_label = ev_sidebar_thumbnails_get_label; +} |