+
+/* attempt to work around GTK+ 2.16/2.17 bugs where random interface
+ elements receive XInput events that they can't handle properly */
+
+// prevent interface items from getting bogus XInput events
+
+gboolean filter_extended_events (GtkWidget *widget, GdkEvent *event,
+ gpointer user_data)
+{
+ if (event->type == GDK_MOTION_NOTIFY &&
+ event->motion.device != gdk_device_get_core_pointer())
+ return TRUE;
+ if ((event->type == GDK_BUTTON_PRESS || event->type == GDK_2BUTTON_PRESS ||
+ event->type == GDK_3BUTTON_PRESS || event->type == GDK_BUTTON_RELEASE) &&
+ event->button.device != gdk_device_get_core_pointer())
+ return TRUE;
+ return FALSE;
+}
+
+/* Code to turn an extended input event into a core event and send it to
+ a different GdkWindow -- e.g. could be used when a click in a text edit box
+ gets sent to the canvas instead due to incorrect event translation.
+ We now turn off xinput altogether while editing text under GTK+ 2.17, so
+ this isn't needed any more... but could become useful again someday!
+*/
+
+/*
+gboolean fix_extended_events (GtkWidget *widget, GdkEvent *event,
+ gpointer user_data)
+{
+ int ix, iy;
+ GdkWindow *window;
+
+ if (user_data) window = (GdkWindow *)user_data;
+ else window = widget->window;
+
+ if (event->type == GDK_MOTION_NOTIFY &&
+ event->motion.device != gdk_device_get_core_pointer()) {
+// printf("fixing motion\n");
+ gdk_window_get_pointer(window, &ix, &iy, NULL);
+ event->motion.x = ix; event->motion.y = iy;
+ event->motion.device = gdk_device_get_core_pointer();
+ g_object_unref(event->motion.window);
+ event->motion.window = g_object_ref(window);
+ gtk_widget_event(widget, event);
+ return TRUE;
+ }
+ if ((event->type == GDK_BUTTON_PRESS || event->type == GDK_BUTTON_RELEASE) &&
+ event->button.device != gdk_device_get_core_pointer()) {
+// printf("fixing button from pos = %f, %f\n", event->button.x, event->button.y);
+ gdk_window_get_pointer(window, &ix, &iy, NULL);
+ event->button.x = ix; event->button.y = iy;
+ event->button.device = gdk_device_get_core_pointer();
+ g_object_unref(event->button.window);
+ event->button.window = g_object_ref(window);
+// printf("fixing button to pos = %f, %f\n", event->button.x, event->button.y);
+ gtk_widget_event(widget, event);
+ return TRUE;
+ }
+ return FALSE;
+}
+*/
+
+// disable xinput when layer combo box is popped up, to avoid crash
+
+gboolean combobox_popup_disable_xinput (GtkWidget *widget, GdkEvent *event,
+ gpointer user_data)
+{
+ gboolean is_shown;
+
+ g_object_get(G_OBJECT(widget), "popup-shown", &is_shown, NULL);
+ gdk_input_set_extension_events(GTK_WIDGET(canvas)->window,
+ GDK_POINTER_MOTION_MASK | GDK_BUTTON_MOTION_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK,
+ (ui.use_xinput && !is_shown)?GDK_EXTENSION_EVENTS_ALL:GDK_EXTENSION_EVENTS_NONE);
+}