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Use motion hints for smooth panning of image on slow machines.
================================================================================
--- src/pixbuf-renderer.c
+++ src/pixbuf-renderer.c
@@ -2968,6 +2968,13 @@
PixbufRenderer *pr;
gint accel;
+ /* This is a hack, but work far the best, at least for single pointer systems.
+ * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
+ gint x, y;
+ gdk_window_get_pointer (bevent->window, &x, &y, NULL);
+ bevent->x = x;
+ bevent->y = y;
+
pr = PIXBUF_RENDERER(widget);
if (pr->scroller_id != -1)
@@ -3003,6 +3010,11 @@
pr->drag_last_x = bevent->x;
pr->drag_last_y = bevent->y;
+ /* This is recommended by the GTK+ documentation, but does not work properly.
+ * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
+ * http://bugzilla.gnome.org/show_bug.cgi?id=587714
+ */
+ /* gdk_event_request_motions (bevent); */
return FALSE;
}
@@ -3023,7 +3035,7 @@
pr->drag_last_y = bevent->y;
pr->drag_moved = 0;
gdk_pointer_grab(widget->window, FALSE,
- GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
+ GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
NULL, NULL, bevent->time);
gtk_grab_add(widget);
break;
@@ -3119,7 +3131,7 @@
g_signal_connect(G_OBJECT(pr), "leave_notify_event",
G_CALLBACK(pr_mouse_leave_cb), pr);
- gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK |
+ gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
GDK_LEAVE_NOTIFY_MASK);
|
