[gnome-panel] panel: Require modifier to move applets by clicking on handle

[Vincent Untz <vuntz src gnome org>]

commit f9a7efdc90727a2089bd5d8924d39afa1e1cd97e
Author: Vincent Untz <vuntz gnome org>
Date:   Wed Mar 23 11:12:54 2011 +0100

    panel: Require modifier to move applets by clicking on handle
    
    Also do the same for internal object (eg: menubar) when clicking with
    middle button.

 gnome-panel/panel-applet-frame.c |   12 ++++++------
 gnome-panel/panel-widget.c       |   10 ++++++++--
 2 files changed, 14 insertions(+), 8 deletions(-)
---
diff --git a/gnome-panel/panel-applet-frame.c b/gnome-panel/panel-applet-frame.c
index cfa8786..ae395e7 100644
--- a/gnome-panel/panel-applet-frame.c
+++ b/gnome-panel/panel-applet-frame.c
@@ -351,6 +351,7 @@ panel_applet_frame_button_changed (GtkWidget      *widget,
 {
 	PanelAppletFrame *frame;
 	gboolean          handled = FALSE;
+	guint             modifiers;
 	GdkDisplay       *display;
 	GdkDevice        *pointer;
 	GdkDeviceManager *device_manager;
@@ -363,12 +364,15 @@ panel_applet_frame_button_changed (GtkWidget      *widget,
 	if (event->window != gtk_widget_get_window (widget))
 		return FALSE;
 
+	modifiers = event->state & GDK_MODIFIER_MASK;
+
 	switch (event->button) {
 	case 1:
 	case 2:
 		if (button_event_in_rect (event, &frame->priv->handle_rect)) {
-			if (event->type == GDK_BUTTON_PRESS ||
-			    event->type == GDK_2BUTTON_PRESS) {
+			if ((event->type == GDK_BUTTON_PRESS ||
+			     event->type == GDK_2BUTTON_PRESS) &&
+			    modifiers == panel_bindings_get_mouse_button_modifier_keymask ()){
 				panel_widget_applet_drag_start (
 					frame->priv->panel, GTK_WIDGET (frame),
 					PW_DRAG_OFF_CURSOR, event->time);
@@ -382,10 +386,6 @@ panel_applet_frame_button_changed (GtkWidget      *widget,
 	case 3:
 		if (event->type == GDK_BUTTON_PRESS ||
 		    event->type == GDK_2BUTTON_PRESS) {
-			guint modifiers;
-
-			modifiers = event->state & GDK_MODIFIER_MASK;
-
 			display = gtk_widget_get_display (widget);
 			device_manager = gdk_display_get_device_manager (display);
 			pointer = gdk_device_manager_get_client_pointer (device_manager);
diff --git a/gnome-panel/panel-widget.c b/gnome-panel/panel-widget.c
index bcd89d1..dcc08ff 100644
--- a/gnome-panel/panel-widget.c
+++ b/gnome-panel/panel-widget.c
@@ -19,6 +19,7 @@
 #include "panel-widget.h"
 #include "button-widget.h"
 #include "panel.h"
+#include "panel-bindings.h"
 #include "panel-util.h"
 #include "panel-marshal.h"
 #include "panel-typebuiltins.h"
@@ -2161,6 +2162,7 @@ panel_widget_applet_button_press_event (GtkWidget      *widget,
 {
 	GtkWidget   *parent;
 	PanelWidget *panel;
+	guint        modifiers;
 	guint32      event_time;
 
 	parent = gtk_widget_get_parent (widget);
@@ -2178,9 +2180,13 @@ panel_widget_applet_button_press_event (GtkWidget      *widget,
 		return TRUE;
 	}
 
-	/* Begin drag if the middle mouse button is pressed, unless the panel
-	 * is locked down or a grab is active (meaning a menu is open) */
+	modifiers = event->state & GDK_MODIFIER_MASK;
+
+	/* Begin drag if the middle mouse button and modifier are pressed,
+	 * unless the panel is locked down or a grab is active (meaning a menu
+	 * is open) */
 	if (panel_lockdown_get_locked_down () || event->button != 2 ||
+	    modifiers != panel_bindings_get_mouse_button_modifier_keymask () ||
 	    gtk_grab_get_current() != NULL)
 		return FALSE;