diff options
Diffstat (limited to 'shell/ev-sidebar-links.c')
| -rw-r--r-- | shell/ev-sidebar-links.c | 760 |
1 files changed, 760 insertions, 0 deletions
diff --git a/shell/ev-sidebar-links.c b/shell/ev-sidebar-links.c new file mode 100644 index 00000000..402f3be7 --- /dev/null +++ b/shell/ev-sidebar-links.c @@ -0,0 +1,760 @@ +/* this file is part of evince, a mate document viewer + * + * Copyright (C) 2004 Red Hat, Inc. + * + * Author: + * Jonathan Blandford <[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-links.h" +#include "ev-job-scheduler.h" +#include "ev-sidebar-links.h" +#include "ev-sidebar-page.h" +#include "ev-window.h" + +struct _EvSidebarLinksPrivate { + GtkWidget *tree_view; + + /* Keep these ids around for blocking */ + guint selection_id; + guint page_changed_id; + guint row_activated_id; + + EvJob *job; + GtkTreeModel *model; + EvDocument *document; + EvDocumentModel *doc_model; +}; + +enum { + PROP_0, + PROP_MODEL, + PROP_WIDGET, +}; + +enum { + LINK_ACTIVATED, + N_SIGNALS +}; + +static void update_page_callback (EvSidebarLinks *sidebar_links, + gint old_page, + gint current_page); +static void row_activated_callback (GtkTreeView *treeview, + GtkTreePath *arg1, + GtkTreeViewColumn *arg2, + gpointer user_data); +static void ev_sidebar_links_set_links_model (EvSidebarLinks *links, + GtkTreeModel *model); +static void job_finished_callback (EvJobLinks *job, + EvSidebarLinks *sidebar_links); +static void ev_sidebar_links_set_current_page (EvSidebarLinks *sidebar_links, + gint current_page); +static void ev_sidebar_links_page_iface_init (EvSidebarPageInterface *iface); +static gboolean ev_sidebar_links_support_document (EvSidebarPage *sidebar_page, + EvDocument *document); +static const gchar* ev_sidebar_links_get_label (EvSidebarPage *sidebar_page); + +static guint signals[N_SIGNALS]; + +G_DEFINE_TYPE_EXTENDED (EvSidebarLinks, + ev_sidebar_links, + GTK_TYPE_VBOX, + 0, + G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE, + ev_sidebar_links_page_iface_init)) + + +#define EV_SIDEBAR_LINKS_GET_PRIVATE(object) \ + (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LINKS, EvSidebarLinksPrivate)) + +static void +ev_sidebar_links_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + EvSidebarLinks *ev_sidebar_links = EV_SIDEBAR_LINKS (object); + + switch (prop_id) + { + case PROP_MODEL: + ev_sidebar_links_set_links_model (ev_sidebar_links, g_value_get_object (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +ev_sidebar_links_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvSidebarLinks *ev_sidebar_links; + + ev_sidebar_links = EV_SIDEBAR_LINKS (object); + + switch (prop_id) + { + case PROP_MODEL: + g_value_set_object (value, ev_sidebar_links->priv->model); + break; + case PROP_WIDGET: + g_value_set_object (value, ev_sidebar_links->priv->tree_view); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +ev_sidebar_links_dispose (GObject *object) +{ + EvSidebarLinks *sidebar = EV_SIDEBAR_LINKS (object); + + if (sidebar->priv->job) { + g_signal_handlers_disconnect_by_func (sidebar->priv->job, + job_finished_callback, sidebar); + ev_job_cancel (sidebar->priv->job); + g_object_unref (sidebar->priv->job); + sidebar->priv->job = NULL; + } + + if (sidebar->priv->model) { + g_object_unref (sidebar->priv->model); + sidebar->priv->model = NULL; + } + + if (sidebar->priv->document) { + g_object_unref (sidebar->priv->document); + sidebar->priv->document = NULL; + sidebar->priv->doc_model = NULL; + } + + G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object); +} + +static void +ev_sidebar_links_map (GtkWidget *widget) +{ + EvSidebarLinks *links; + + links = EV_SIDEBAR_LINKS (widget); + + GTK_WIDGET_CLASS (ev_sidebar_links_parent_class)->map (widget); + + if (links->priv->model) { + ev_sidebar_links_set_current_page (links, + ev_document_model_get_page (links->priv->doc_model)); + } +} + +static void +ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class) +{ + GObjectClass *g_object_class; + GtkWidgetClass *widget_class; + + g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class); + widget_class = GTK_WIDGET_CLASS (ev_sidebar_links_class); + + g_object_class->set_property = ev_sidebar_links_set_property; + g_object_class->get_property = ev_sidebar_links_get_property; + g_object_class->dispose = ev_sidebar_links_dispose; + + widget_class->map = ev_sidebar_links_map; + + signals[LINK_ACTIVATED] = g_signal_new ("link-activated", + G_TYPE_FROM_CLASS (g_object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvSidebarLinksClass, link_activated), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, G_TYPE_OBJECT); + + g_object_class_install_property (g_object_class, + PROP_MODEL, + g_param_spec_object ("model", + "Model", + "Current Model", + GTK_TYPE_TREE_MODEL, + G_PARAM_READWRITE)); + g_object_class_override_property (g_object_class, + PROP_WIDGET, + "main-widget"); + + g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate)); +} + +static void +selection_changed_callback (GtkTreeSelection *selection, + EvSidebarLinks *ev_sidebar_links) +{ + EvDocument *document; + GtkTreeModel *model; + GtkTreeIter iter; + + document = EV_DOCUMENT (ev_sidebar_links->priv->document); + g_return_if_fail (ev_sidebar_links->priv->document != NULL); + + if (gtk_tree_selection_get_selected (selection, &model, &iter)) { + EvLink *link; + + gtk_tree_model_get (model, &iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + if (link == NULL) + return; + + g_signal_handler_block (ev_sidebar_links->priv->doc_model, + ev_sidebar_links->priv->page_changed_id); + g_signal_emit (ev_sidebar_links, signals[LINK_ACTIVATED], 0, link); + g_signal_handler_unblock (ev_sidebar_links->priv->doc_model, + ev_sidebar_links->priv->page_changed_id); + + g_object_unref (link); + } +} + +static GtkTreeModel * +create_loading_model (void) +{ + GtkTreeModel *retval; + GtkTreeIter iter; + gchar *markup; + + /* Creates a fake model to indicate that we're loading */ + retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS, + G_TYPE_STRING, + G_TYPE_OBJECT, + G_TYPE_BOOLEAN, + G_TYPE_STRING); + + gtk_list_store_append (GTK_LIST_STORE (retval), &iter); + markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading…")); + gtk_list_store_set (GTK_LIST_STORE (retval), &iter, + EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup, + EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE, + EV_DOCUMENT_LINKS_COLUMN_LINK, NULL, + -1); + g_free (markup); + + return retval; +} + +static void +print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar) +{ + GtkWidget *window; + GtkTreeSelection *selection; + GtkTreeModel *model; + GtkTreeIter iter; + + selection = gtk_tree_view_get_selection + (GTK_TREE_VIEW (sidebar->priv->tree_view)); + + if (gtk_tree_selection_get_selected (selection, &model, &iter)) { + EvLink *link; + int first_page, last_page = -1; + + gtk_tree_model_get (model, &iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + if (!link) + return; + + first_page = ev_link_get_page (link); + if (first_page == -1) { + g_object_unref (link); + return; + } + + first_page++; + g_object_unref (link); + + if (gtk_tree_model_iter_next (model, &iter)) { + gtk_tree_model_get (model, &iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + if (link) { + last_page = ev_link_get_page (link); + g_object_unref (link); + } + } else { + last_page = ev_document_get_n_pages (sidebar->priv->document); + } + + if (last_page == -1) + last_page = ev_document_get_n_pages (sidebar->priv->document); + + window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar)); + if (EV_IS_WINDOW (window)) { + ev_window_print_range (EV_WINDOW (window), first_page, last_page); + } + } +} + +static GtkMenu * +build_popup_menu (EvSidebarLinks *sidebar) +{ + GtkWidget *menu; + GtkWidget *item; + + menu = gtk_menu_new (); + item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL); + gtk_label_set_label (GTK_LABEL (gtk_bin_get_child (GTK_BIN (item))), _("Print…")); + gtk_widget_show (item); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + g_signal_connect (item, "activate", + G_CALLBACK (print_section_cb), sidebar); + + return GTK_MENU (menu); +} + +static void +popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar) +{ + GtkMenu *menu = build_popup_menu (sidebar); + + gtk_menu_popup (menu, NULL, NULL, + ev_gui_menu_position_tree_selection, + sidebar->priv->tree_view, 0, + gtk_get_current_event_time ()); + gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE); +} + +static gboolean +button_press_cb (GtkWidget *treeview, + GdkEventButton *event, + EvSidebarLinks *sidebar) +{ + GtkTreePath *path = NULL; + + if (event->button == 3) { + if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview), + event->x, + event->y, + &path, + NULL, NULL, NULL)) { + gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview), + path, NULL, FALSE); + gtk_menu_popup (build_popup_menu (sidebar), NULL, + NULL, NULL, NULL, event->button, + gtk_get_current_event_time ()); + gtk_tree_path_free (path); + + return TRUE; + } + } + + return FALSE; +} + + +static void +ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links) +{ + EvSidebarLinksPrivate *priv; + GtkWidget *swindow; + GtkTreeViewColumn *column; + GtkCellRenderer *renderer; + GtkTreeSelection *selection; + GtkTreeModel *loading_model; + + priv = ev_sidebar_links->priv; + + swindow = gtk_scrolled_window_new (NULL, NULL); + + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow), + GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); + gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow), + GTK_SHADOW_IN); + + /* Create tree view */ + loading_model = create_loading_model (); + priv->tree_view = gtk_tree_view_new_with_model (loading_model); + g_object_unref (loading_model); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view)); + gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE); + gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE); + gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view); + + gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0); + gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links)); + + column = gtk_tree_view_column_new (); + gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE); + gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column); + + renderer = (GtkCellRenderer*) + g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, + "ellipsize", PANGO_ELLIPSIZE_END, + NULL); + gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE); + gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer, + "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP, + NULL); + + + renderer = gtk_cell_renderer_text_new (); + gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE); + gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer, + "text", EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL, + NULL); + g_object_set (G_OBJECT (renderer), "style", PANGO_STYLE_ITALIC, NULL); + + g_signal_connect (priv->tree_view, + "button_press_event", + G_CALLBACK (button_press_cb), + ev_sidebar_links); + g_signal_connect (priv->tree_view, + "popup_menu", + G_CALLBACK (popup_menu_cb), + ev_sidebar_links); +} + +static void +ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links) +{ + ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links); + + ev_sidebar_links_construct (ev_sidebar_links); +} + +static gboolean +fill_page_labels (GtkTreeModel *tree_model, + GtkTreePath *path, + GtkTreeIter *iter, + EvSidebarLinks *sidebar_links) +{ + EvLink *link; + gint page; + gchar *page_label; + + gtk_tree_model_get (tree_model, iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + if (!link) + return FALSE; + + page = ev_link_get_page (link); + + if (page < 0) + return FALSE; + + page_label = ev_document_get_page_label (sidebar_links->priv->document, + page); + gtk_tree_store_set (GTK_TREE_STORE (tree_model), iter, + EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL, page_label, + -1); + + g_free (page_label); + + g_object_unref (link); + return FALSE; +} + +/* Public Functions */ + +GtkWidget * +ev_sidebar_links_new (void) +{ + GtkWidget *ev_sidebar_links; + + ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL); + + return ev_sidebar_links; +} + +static gboolean +update_page_callback_foreach (GtkTreeModel *model, + GtkTreePath *path, + GtkTreeIter *iter, + gpointer data) +{ + EvSidebarLinks *sidebar_links = (data); + EvLink *link; + + gtk_tree_model_get (model, iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + + if (link) { + int current_page; + int dest_page; + + dest_page = ev_link_get_page (link); + g_object_unref (link); + + current_page = ev_document_model_get_page (sidebar_links->priv->doc_model); + + if (dest_page == current_page) { + gtk_tree_view_expand_to_path (GTK_TREE_VIEW (sidebar_links->priv->tree_view), + path); + gtk_tree_view_set_cursor (GTK_TREE_VIEW (sidebar_links->priv->tree_view), + path, NULL, FALSE); + + return TRUE; + } + } + + return FALSE; +} + +static void +ev_sidebar_links_set_current_page (EvSidebarLinks *sidebar_links, + gint current_page) +{ + GtkTreeSelection *selection; + GtkTreeModel *model; + GtkTreeIter iter; + + /* Widget is not currently visible */ + if (!gtk_widget_get_mapped (GTK_WIDGET (sidebar_links))) + return; + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view)); + + if (gtk_tree_selection_get_selected (selection, &model, &iter)) { + EvLink *link; + + gtk_tree_model_get (model, &iter, + EV_DOCUMENT_LINKS_COLUMN_LINK, &link, + -1); + if (link) { + gint dest_page; + + dest_page = ev_link_get_page (link); + g_object_unref (link); + + if (dest_page == current_page) + return; + } + } + + /* We go through the tree linearly looking for the first page that + * matches. This is pretty inefficient. We can do something neat with + * a GtkTreeModelSort here to make it faster, if it turns out to be + * slow. + */ + g_signal_handler_block (selection, sidebar_links->priv->selection_id); + g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id); + + gtk_tree_model_foreach (model, + update_page_callback_foreach, + sidebar_links); + + g_signal_handler_unblock (selection, sidebar_links->priv->selection_id); + g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id); +} + +static void +update_page_callback (EvSidebarLinks *sidebar_links, + gint old_page, + gint new_page) +{ + ev_sidebar_links_set_current_page (sidebar_links, new_page); +} + +static void +row_activated_callback (GtkTreeView *treeview, + GtkTreePath *arg1, + GtkTreeViewColumn *arg2, + gpointer user_data) +{ + if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) { + gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1); + } else { + gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE); + } +} + +static void +expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent) +{ + GtkTreeIter iter; + gboolean expand; + + if (gtk_tree_model_iter_children (model, &iter, parent)) { + do { + gtk_tree_model_get (model, &iter, + EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand, + -1); + if (expand) { + GtkTreePath *path; + + path = gtk_tree_model_get_path (model, &iter); + gtk_tree_view_expand_row (tree_view, path, FALSE); + gtk_tree_path_free (path); + } + + expand_open_links (tree_view, model, &iter); + } while (gtk_tree_model_iter_next (model, &iter)); + } +} + +static void +ev_sidebar_links_set_links_model (EvSidebarLinks *sidebar_links, + GtkTreeModel *model) +{ + EvSidebarLinksPrivate *priv = sidebar_links->priv; + + if (priv->model == model) + return; + + if (priv->model) + g_object_unref (priv->model); + priv->model = g_object_ref (model); + + g_object_notify (G_OBJECT (sidebar_links), "model"); +} + +static void +job_finished_callback (EvJobLinks *job, + EvSidebarLinks *sidebar_links) +{ + EvSidebarLinksPrivate *priv = sidebar_links->priv; + GtkTreeSelection *selection; + + ev_sidebar_links_set_links_model (sidebar_links, job->model); + + gtk_tree_model_foreach (priv->model, (GtkTreeModelForeachFunc)fill_page_labels, sidebar_links); + + gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model); + + g_object_unref (job); + priv->job = NULL; + + expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view)); + gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE); + + if (priv->selection_id <= 0) { + priv->selection_id = + g_signal_connect (selection, "changed", + G_CALLBACK (selection_changed_callback), + sidebar_links); + } + priv->page_changed_id = + g_signal_connect_swapped (priv->doc_model, "page-changed", + G_CALLBACK (update_page_callback), + sidebar_links); + if (priv->row_activated_id <= 0) { + priv->row_activated_id = + g_signal_connect (priv->tree_view, "row-activated", + G_CALLBACK (row_activated_callback), + sidebar_links); + } + + ev_sidebar_links_set_current_page (sidebar_links, + ev_document_model_get_page (priv->doc_model)); +} + +static void +ev_sidebar_links_document_changed_cb (EvDocumentModel *model, + GParamSpec *pspec, + EvSidebarLinks *sidebar_links) +{ + EvDocument *document = ev_document_model_get_document (model); + EvSidebarLinksPrivate *priv = sidebar_links->priv; + + if (!EV_IS_DOCUMENT_LINKS (document)) + return; + + if (!ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document))) + return; + + if (priv->document) { + gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL); + g_object_unref (priv->document); + } + + priv->document = g_object_ref (document); + + if (priv->job) { + g_signal_handlers_disconnect_by_func (priv->job, + job_finished_callback, + sidebar_links); + g_object_unref (priv->job); + } + + priv->job = ev_job_links_new (document); + g_signal_connect (priv->job, + "finished", + G_CALLBACK (job_finished_callback), + sidebar_links); + /* The priority doesn't matter for this job */ + ev_job_scheduler_push_job (priv->job, EV_JOB_PRIORITY_NONE); +} + +static void +ev_sidebar_links_set_model (EvSidebarPage *sidebar_page, + EvDocumentModel *model) +{ + EvSidebarLinks *sidebar_links = EV_SIDEBAR_LINKS (sidebar_page); + EvSidebarLinksPrivate *priv = sidebar_links->priv; + + if (priv->doc_model == model) + return; + + priv->doc_model = model; + g_signal_connect (model, "notify::document", + G_CALLBACK (ev_sidebar_links_document_changed_cb), + sidebar_page); +} + +static gboolean +ev_sidebar_links_support_document (EvSidebarPage *sidebar_page, + EvDocument *document) +{ + return (EV_IS_DOCUMENT_LINKS (document) && + ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document))); +} + +static const gchar* +ev_sidebar_links_get_label (EvSidebarPage *sidebar_page) +{ + return _("Index"); +} + +static void +ev_sidebar_links_page_iface_init (EvSidebarPageInterface *iface) +{ + iface->support_document = ev_sidebar_links_support_document; + iface->set_model = ev_sidebar_links_set_model; + iface->get_label = ev_sidebar_links_get_label; +} + |