inicial

1 files changed, 214 insertions, 0 deletions

diff --git a/shell/ev-navigation-action-widget.c b/shell/ev-navigation-action-widget.c
new file mode 100644
index 00000000..95c7fdff
--- /dev/null
+++ b/shell/ev-navigation-action-widget.c
@@ -0,0 +1,214 @@
+/*
+ *  Copyright (C) 2003, 2004 Marco Pesenti Gritti
+ *  Copyright (C) 2003, 2004 Christian Persch
+ *
+ *  This program 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, or (at your option)
+ *  any later version.
+ *
+ *  This program 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 "ev-navigation-action-widget.h"
+
+#include <glib/gi18n.h>
+#include <string.h>
+
+static void  ev_navigation_action_widget_init       (EvNavigationActionWidget      *action_widget);
+static void  ev_navigation_action_widget_class_init (EvNavigationActionWidgetClass *action_widget);
+static void ev_navigation_action_widget_toggled (GtkToggleToolButton *toggle);
+static gboolean ev_navigation_action_widget_button_press_event (GtkWidget *widget,
+        	        	        		        GdkEventButton    *event, 
+        	        	        		        gpointer data);
+
+G_DEFINE_TYPE (EvNavigationActionWidget, ev_navigation_action_widget, GTK_TYPE_TOGGLE_TOOL_BUTTON)
+
+enum
+{
+	SHOW_MENU,
+	LAST_SIGNAL
+};
+
+static gint signals[LAST_SIGNAL];
+
+static void
+ev_navigation_action_widget_init (EvNavigationActionWidget *action_widget)
+{
+	GtkWidget *toggle_button;
+	
+	/* It's rather dirty hack but we need a child to connect to
+	 * button press event
+	 */
+		
+	toggle_button = gtk_bin_get_child (GTK_BIN (action_widget));
+	
+	g_signal_connect (toggle_button, "button-press-event", 
+			  G_CALLBACK (ev_navigation_action_widget_button_press_event),
+		          action_widget);
+	return;
+}
+
+static void
+ev_navigation_action_widget_class_init (EvNavigationActionWidgetClass *klass)
+{
+	GtkToggleToolButtonClass *toggle_tool_button_class = GTK_TOGGLE_TOOL_BUTTON_CLASS (klass);
+
+	toggle_tool_button_class->toggled = ev_navigation_action_widget_toggled;
+
+	signals[SHOW_MENU] =
+	          g_signal_new ("show-menu",
+        		        G_OBJECT_CLASS_TYPE (klass),
+                    		G_SIGNAL_RUN_FIRST,
+                                G_STRUCT_OFFSET (EvNavigationActionWidgetClass, show_menu),
+                                NULL, NULL,
+                                g_cclosure_marshal_VOID__VOID,
+                                G_TYPE_NONE, 0);
+}
+
+static int
+menu_deactivate_cb (GtkMenuShell      *menu_shell,
+		    EvNavigationActionWidget *widget)
+{
+         gtk_toggle_tool_button_set_active (GTK_TOGGLE_TOOL_BUTTON (widget), FALSE);
+	 return TRUE;
+}
+	          
+static void
+menu_detacher (GtkWidget *widget,
+               GtkMenu   *menu)
+{
+	 EvNavigationActionWidget *button = EV_NAVIGATION_ACTION_WIDGET (widget);
+         g_return_if_fail (button->menu == menu);
+	 button->menu = NULL;
+}
+
+void
+ev_navigation_action_widget_set_menu(EvNavigationActionWidget *button, GtkWidget *menu)
+{
+
+      if (button->menu == GTK_MENU (menu))
+		return;
+	
+      if (button->menu && gtk_widget_get_visible (GTK_WIDGET (button->menu)))
+	        gtk_menu_shell_deactivate (GTK_MENU_SHELL (button->menu));
+
+      if (button->menu) {
+    		g_signal_handlers_disconnect_by_func (button->menu, 
+						menu_deactivate_cb, 
+						button);
+		gtk_menu_detach (button->menu);
+       }
+
+       button->menu = GTK_MENU (menu);
+
+       if (button->menu) {
+    		gtk_menu_attach_to_widget (button->menu, GTK_WIDGET (button),
+            		                   menu_detacher);
+		g_signal_connect (button->menu, "deactivate",
+				  G_CALLBACK (menu_deactivate_cb), button);
+	}
+}
+
+static void
+menu_position_func (GtkMenu           *menu,
+                    int               *x,
+                    int               *y,
+                    gboolean          *push_in,
+                    EvNavigationActionWidget *button)
+{
+	GtkWidget *widget = GTK_WIDGET (button);
+	GtkRequisition menu_req;
+	GtkAllocation  allocation;
+	GtkTextDirection direction;
+	GdkWindow *gdk_window;
+	GdkRectangle monitor;
+	gint monitor_num;
+	GdkScreen *screen;
+
+	gtk_widget_size_request (GTK_WIDGET (button->menu), &menu_req);
+	direction = gtk_widget_get_direction (widget);
+	screen = gtk_widget_get_screen (GTK_WIDGET (menu));
+
+	gdk_window = gtk_widget_get_window (widget);
+	monitor_num = gdk_screen_get_monitor_at_window (screen, gdk_window);
+	if (monitor_num < 0)
+		monitor_num = 0;
+	gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
+
+	gdk_window_get_origin (gdk_window, x, y);
+	gtk_widget_get_allocation (widget, &allocation);
+	*x += allocation.x;
+	*y += allocation.y;
+
+	if (direction == GTK_TEXT_DIR_LTR)
+		*x += MAX (allocation.width - menu_req.width, 0);
+	else if (menu_req.width > allocation.width)
+    		*x -= menu_req.width - allocation.width;
+
+	if ((*y + allocation.height + menu_req.height) <= monitor.y + monitor.height)
+    		*y += allocation.height;
+	else if ((*y - menu_req.height) >= monitor.y)
+    		*y -= menu_req.height;
+	else if (monitor.y + monitor.height - (*y + allocation.height) > *y)
+    		*y += allocation.height;
+	else
+    		*y -= menu_req.height; 
+
+	*push_in = FALSE;
+}
+
+static void
+popup_menu_under_arrow (EvNavigationActionWidget *button,
+                        GdkEventButton    *event)
+{
+	g_signal_emit (button, signals[SHOW_MENU], 0);
+
+	if (!button->menu)
+		return;
+
+	gtk_menu_popup (button->menu, NULL, NULL, 
+    	    		(GtkMenuPositionFunc) menu_position_func,
+        	         button,
+            	         event ? event->button : 0,
+                         event ? event->time : gtk_get_current_event_time ());
+}
+
+static void
+ev_navigation_action_widget_toggled (GtkToggleToolButton *toggle)
+{
+	EvNavigationActionWidget *button = EV_NAVIGATION_ACTION_WIDGET (toggle);
+	if (!button->menu)
+    		return;
+
+	if (gtk_toggle_tool_button_get_active (GTK_TOGGLE_TOOL_BUTTON (button)) &&
+	    !gtk_widget_get_visible (GTK_WIDGET (button->menu))) {
+		      /* we get here only when the menu is activated by a key
+		       * press, so that we can select the first menu item */
+		      popup_menu_under_arrow (button, NULL);
+		      gtk_menu_shell_select_first (GTK_MENU_SHELL (button->menu), FALSE);
+        }
+}
+
+static gboolean
+ev_navigation_action_widget_button_press_event (GtkWidget *widget,
+                	            		GdkEventButton    *event,
+                	            		gpointer data)
+{
+	EvNavigationActionWidget *button = EV_NAVIGATION_ACTION_WIDGET (data);
+
+	if (event->button == 1) {
+	         popup_menu_under_arrow (button, event);
+	    	 gtk_toggle_tool_button_set_active (GTK_TOGGLE_TOOL_BUTTON (button), TRUE);
+	    	 return TRUE;
+	}
+	return FALSE;
+}