[evince] [previewer] Add some more keybindings

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 4d91ce6a1f547d3a75da7cbc956033fbf65c7c0c
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Wed Mar 31 16:18:18 2010 +0200

    [previewer] Add some more keybindings

 data/evince-previewer-ui.xml    |   18 +++++++
 previewer/ev-previewer-window.c |   95 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 113 insertions(+), 0 deletions(-)
---
diff --git a/data/evince-previewer-ui.xml b/data/evince-previewer-ui.xml
index 2987c50..32c75af 100644
--- a/data/evince-previewer-ui.xml
+++ b/data/evince-previewer-ui.xml
@@ -12,4 +12,22 @@
     <separator/>
     <toolitem name="PreviewPrint" action="PreviewPrint"/>
   </toolbar>
+
+  <accelerator name="SpaceAccel" action="Space"/>
+  <accelerator name="ReturnAccel" action="Return"/>
+  <accelerator name="BackSpaceAccel" action="BackSpace"/>
+  <accelerator name="ShiftSpaceAccel" action="ShiftSpace"/>
+  <accelerator name="ShiftBackSpaceAccel" action="ShiftBackSpace"/>
+  <accelerator name="pAccel" action="p"/>
+  <accelerator name="nAccel" action="n"/>
+  <accelerator name="ShiftReturnAccel" action="ShiftReturn"/>
+  <accelerator name="FocusPageSelectorAccel" action="FocusPageSelector"/>
+  <accelerator name="PlusAccel" action="Plus"/>
+  <accelerator name="MinusAccel" action="Minus"/>
+  <accelerator name="Equal" action="Equal"/>
+  <accelerator name="CtrlEqualAccel" action="CtrlEqual"/>
+  <accelerator name="KpPlusAccel" action="KpPlus"/>
+  <accelerator name="KpMinusAccel" action="KpMinus"/>
+  <accelerator name="CtrlKpPlusAccel" action="CtrlKpPlus"/>
+  <accelerator name="CtrlKpMinusAccel" action="CtrlKpMinus"/>
 </ui>
diff --git a/previewer/ev-previewer-window.c b/previewer/ev-previewer-window.c
index 2c884f6..91e25a8 100644
--- a/previewer/ev-previewer-window.c
+++ b/previewer/ev-previewer-window.c
@@ -36,6 +36,7 @@ struct _EvPreviewerWindow {
 	EvDocument       *document;
 
 	GtkActionGroup   *action_group;
+	GtkActionGroup   *accels_group;
 	GtkUIManager     *ui_manager;
 
 	GtkWidget        *swindow;
@@ -152,6 +153,31 @@ ev_previewer_window_action_page_activated (GtkAction         *action,
 	gtk_widget_grab_focus (GTK_WIDGET (window->view));
 }
 
+static void
+ev_previewer_window_focus_page_selector (GtkAction         *action,
+					 EvPreviewerWindow *window)
+{
+	GtkAction *page_action;
+
+	page_action = gtk_action_group_get_action (window->action_group,
+						   "PageSelector");
+	ev_page_action_grab_focus (EV_PAGE_ACTION (page_action));
+}
+
+static void
+ev_previewer_window_scroll_forward (GtkAction         *action,
+				    EvPreviewerWindow *window)
+{
+	ev_view_scroll (window->view, GTK_SCROLL_PAGE_FORWARD, FALSE);
+}
+
+static void
+ev_previewer_window_scroll_backward (GtkAction         *action,
+				     EvPreviewerWindow *window)
+{
+	ev_view_scroll (window->view, GTK_SCROLL_PAGE_BACKWARD, FALSE);
+}
+
 #if GTKUNIXPRINT_ENABLED
 static void
 ev_previewer_window_print_finished (GtkPrintJob       *print_job,
@@ -264,6 +290,44 @@ static const GtkActionEntry action_entries[] = {
 #endif
 };
 
+static const GtkActionEntry accel_entries[] = {
+	{ "Space", NULL, "", "space", NULL,
+	  G_CALLBACK (ev_previewer_window_scroll_forward) },
+	{ "ShiftSpace", NULL, "", "<shift>space", NULL,
+	  G_CALLBACK (ev_previewer_window_scroll_backward) },
+	{ "BackSpace", NULL, "", "BackSpace", NULL,
+	  G_CALLBACK (ev_previewer_window_scroll_backward) },
+	{ "ShiftBackSpace", NULL, "", "<shift>BackSpace", NULL,
+	  G_CALLBACK (ev_previewer_window_scroll_forward) },
+	{ "Return", NULL, "", "Return", NULL,
+	  G_CALLBACK (ev_previewer_window_scroll_forward) },
+	{ "ShiftReturn", NULL, "", "<shift>Return", NULL,
+	  G_CALLBACK (ev_previewer_window_scroll_backward) },
+	{ "p", GTK_STOCK_GO_UP, "", "p", NULL,
+	  G_CALLBACK (ev_previewer_window_previous_page) },
+	{ "n", GTK_STOCK_GO_DOWN, "", "n", NULL,
+	  G_CALLBACK (ev_previewer_window_next_page) },
+	{ "Plus", GTK_STOCK_ZOOM_IN, NULL, "plus", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_in) },
+	{ "CtrlEqual", GTK_STOCK_ZOOM_IN, NULL, "<control>equal", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_in) },
+	{ "Equal", GTK_STOCK_ZOOM_IN, NULL, "equal", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_in) },
+	{ "Minus", GTK_STOCK_ZOOM_OUT, NULL, "minus", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_out) },
+	{ "KpPlus", GTK_STOCK_ZOOM_IN, NULL, "KP_Add", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_in) },
+	{ "KpMinus", GTK_STOCK_ZOOM_OUT, NULL, "KP_Subtract", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_out) },
+	{ "CtrlKpPlus", GTK_STOCK_ZOOM_IN, NULL, "<control>KP_Add", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_in) },
+	{ "CtrlKpMinus", GTK_STOCK_ZOOM_OUT, NULL, "<control>KP_Subtract", NULL,
+	  G_CALLBACK (ev_previewer_window_zoom_out) },
+	{ "FocusPageSelector", NULL, "", "<control>l", NULL,
+	  G_CALLBACK (ev_previewer_window_focus_page_selector) }
+
+};
+
 static const GtkToggleActionEntry toggle_action_entries[] = {
 	{ "ViewBestFit", EV_STOCK_ZOOM_PAGE, N_("_Best Fit"), NULL,
 	  N_("Make the current document fill the window"),
@@ -273,6 +337,17 @@ static const GtkToggleActionEntry toggle_action_entries[] = {
 	  G_CALLBACK (ev_previewer_window_zoom_page_width) }
 };
 
+static gboolean
+view_focus_changed (GtkWidget         *widget,
+		    GdkEventFocus     *event,
+		    EvPreviewerWindow *window)
+{
+	if (window->accels_group)
+		gtk_action_group_set_sensitive (window->accels_group, event->in);
+
+	return FALSE;
+}
+
 static void
 view_sizing_mode_changed (EvDocumentModel   *model,
 			  GParamSpec        *pspec,
@@ -316,6 +391,7 @@ ev_previewer_window_set_document (EvPreviewerWindow *window,
 			  window);
 	ev_view_set_loading (window->view, FALSE);
 	gtk_action_group_set_sensitive (window->action_group, TRUE);
+	gtk_action_group_set_sensitive (window->accels_group, TRUE);
 }
 
 static void
@@ -350,6 +426,11 @@ ev_previewer_window_dispose (GObject *object)
 		window->action_group = NULL;
 	}
 
+	if (window->accels_group) {
+		g_object_unref (window->accels_group);
+		window->accels_group = NULL;
+	}
+
 	if (window->ui_manager) {
 		g_object_unref (window->ui_manager);
 		window->ui_manager = NULL;
@@ -476,9 +557,17 @@ ev_previewer_window_constructor (GType                  type,
 	gtk_action_group_add_action (window->action_group, action);
 	g_object_unref (action);
 
+	window->accels_group = gtk_action_group_new ("PreviewerAccelerators");
+	gtk_action_group_add_actions (window->accels_group, accel_entries,
+				      G_N_ELEMENTS (accel_entries),
+				      window);
+	gtk_action_group_set_sensitive (window->accels_group, FALSE);
+
 	window->ui_manager = gtk_ui_manager_new ();
 	gtk_ui_manager_insert_action_group (window->ui_manager,
 					    window->action_group, 0);
+	gtk_ui_manager_insert_action_group (window->ui_manager,
+					    window->accels_group, 1);
 	gtk_window_add_accel_group (GTK_WINDOW (window),
 				    gtk_ui_manager_get_accel_group (window->ui_manager));
 	datadir = data_dir ();
@@ -509,6 +598,12 @@ ev_previewer_window_constructor (GType                  type,
 					GTK_POLICY_AUTOMATIC);
 
 	window->view = EV_VIEW (ev_view_new ());
+	g_signal_connect_object (window->view, "focus_in_event",
+				 G_CALLBACK (view_focus_changed),
+				 window, 0);
+	g_signal_connect_object (window->view, "focus_out_event",
+				 G_CALLBACK (view_focus_changed),
+				 window, 0);
 	ev_view_set_model (window->view, window->model);
 	ev_document_model_set_continuous (window->model, FALSE);
 	ev_view_set_loading (window->view, TRUE);