+
+gboolean DeferredMotion::gtk_motion(ui::Widget widget, GdkEventMotion *event, DeferredMotion *self)
+{
+ self->motion( event->x, event->y, event->state );
+ return FALSE;
+}
+
+gboolean FreezePointer::motion_delta(ui::Window widget, GdkEventMotion *event, FreezePointer *self)
+{
+ int current_x, current_y;
+ Sys_GetCursorPos( widget, ¤t_x, ¤t_y );
+ int dx = current_x - self->last_x;
+ int dy = current_y - self->last_y;
+ int ddx = current_x - self->recorded_x;
+ int ddy = current_y - self->recorded_y;
+ self->last_x = current_x;
+ self->last_y = current_y;
+ if ( dx != 0 || dy != 0 ) {
+ //globalOutputStream() << "motion x: " << dx << ", y: " << dy << "\n";
+ if (ddx < -32 || ddx > 32 || ddy < -32 || ddy > 32) {
+ Sys_SetCursorPos( widget, self->recorded_x, self->recorded_y );
+ self->last_x = self->recorded_x;
+ self->last_y = self->recorded_y;
+ }
+ self->m_function( dx, dy, event->state, self->m_data );
+ }
+ return FALSE;
+}
+
+void FreezePointer::freeze_pointer(ui::Window window, FreezePointer::MotionDeltaFunction function, void *data)
+{
+ ASSERT_MESSAGE( m_function == 0, "can't freeze pointer" );
+
+ const GdkEventMask mask = static_cast<GdkEventMask>( GDK_POINTER_MOTION_MASK
+ | GDK_POINTER_MOTION_HINT_MASK
+ | GDK_BUTTON_MOTION_MASK
+ | GDK_BUTTON1_MOTION_MASK
+ | GDK_BUTTON2_MOTION_MASK
+ | GDK_BUTTON3_MOTION_MASK
+ | GDK_BUTTON_PRESS_MASK
+ | GDK_BUTTON_RELEASE_MASK
+ | GDK_VISIBILITY_NOTIFY_MASK );
+
+ GdkCursor* cursor = create_blank_cursor();
+ //GdkGrabStatus status =
+ gdk_pointer_grab( gtk_widget_get_window(window), TRUE, mask, 0, cursor, GDK_CURRENT_TIME );
+ gdk_cursor_unref( cursor );
+
+ Sys_GetCursorPos( window, &recorded_x, &recorded_y );
+
+ Sys_SetCursorPos( window, recorded_x, recorded_y );
+
+ last_x = recorded_x;
+ last_y = recorded_y;
+
+ m_function = function;
+ m_data = data;
+
+ handle_motion = window.connect( "motion_notify_event", G_CALLBACK( motion_delta ), this );
+}
+
+void FreezePointer::unfreeze_pointer(ui::Window window)
+{
+ g_signal_handler_disconnect( G_OBJECT( window ), handle_motion );
+
+ m_function = 0;
+ m_data = 0;
+
+ Sys_SetCursorPos( window, recorded_x, recorded_y );
+
+ gdk_pointer_ungrab( GDK_CURRENT_TIME );
+}