+ else if (dx < 0)
+ {
+ if (gravity_works)
+ {
+ gdk_window_move_resize (pizza->bin_window,
+ x + dx,
+ y,
+ w - dx,
+ h);
+ gdk_window_move (pizza->bin_window, x, y);
+ gdk_window_resize (pizza->bin_window, w, h );
+ }
+ else
+ {
+ /* FIXME */
+ }
+
+ gtk_pizza_expose_area (pizza,
+ 0,
+ 0,
+ MIN (-dx, w),
+ h);
+ }
+
+ if (dy > 0)
+ {
+ if (gravity_works)
+ {
+ gdk_window_resize (pizza->bin_window, w, h + dy);
+ gdk_window_move (pizza->bin_window, x, y-dy);
+ gdk_window_move_resize (pizza->bin_window,
+ x, y, w, h );
+ }
+ else
+ {
+ /* FIXME */
+ }
+
+ gtk_pizza_expose_area (pizza,
+ 0,
+ MAX ((gint)h - dy, 0),
+ w,
+ MIN (dy, h));
+ }
+ else if (dy < 0)
+ {
+ if (gravity_works)
+ {
+ gdk_window_move_resize (pizza->bin_window,
+ x, y+dy, w, h - dy );
+ gdk_window_move (pizza->bin_window, x, y);
+ gdk_window_resize (pizza->bin_window, w, h );
+ }
+ else
+ {
+ /* FIXME */
+ }
+ gtk_pizza_expose_area (pizza,
+ 0,
+ 0,
+ w,
+ MIN (-dy, (gint)h));
+ }
+
+ gtk_pizza_position_children (pizza);
+
+ /* We have to make sure that all exposes from this scroll get
+ * processed before we scroll again, or the expose events will
+ * have invalid coordinates.
+ *
+ * We also do expose events for other windows, since otherwise
+ * their updating will fall behind the scrolling
+ *
+ * This also avoids a problem in pre-1.0 GTK where filters don't
+ * have access to configure events that were compressed.
+ */
+
+ gdk_flush();
+ while (XCheckIfEvent(GDK_WINDOW_XDISPLAY (pizza->bin_window),
+ &xevent,
+ gtk_pizza_expose_predicate,
+ (XPointer)&GDK_WINDOW_XWINDOW (pizza->bin_window)))
+ {
+ GdkEvent event;
+ GtkWidget *event_widget;
+
+ if ((xevent.xany.window == GDK_WINDOW_XWINDOW (pizza->bin_window)) &&
+ (gtk_pizza_filter (&xevent, &event, pizza) == GDK_FILTER_REMOVE))
+ continue;
+
+ if (xevent.type == Expose)
+ {
+ event.expose.window = gdk_window_lookup (xevent.xany.window);
+ gdk_window_get_user_data (event.expose.window,
+ (gpointer *)&event_widget);
+
+ if (event_widget)
+ {
+ event.expose.type = GDK_EXPOSE;
+ event.expose.area.x = xevent.xexpose.x;
+ event.expose.area.y = xevent.xexpose.y;
+ event.expose.area.width = xevent.xexpose.width;
+ event.expose.area.height = xevent.xexpose.height;
+ event.expose.count = xevent.xexpose.count;
+
+ gdk_window_ref (event.expose.window);
+ gtk_widget_event (event_widget, &event);
+ gdk_window_unref (event.expose.window);
+ }
+ }
+ }
+}
+
+/* The main event filter. Actually, we probably don't really need
+ * to install this as a filter at all, since we are calling it
+ * directly above in the expose-handling hack. But in case scrollbars
+ * are fixed up in some manner...
+ *
+ * This routine identifies expose events that are generated when
+ * we've temporarily moved the bin_window_origin, and translates
+ * them or discards them, depending on whether we are obscured
+ * or not.
+ */
+static GdkFilterReturn
+gtk_pizza_filter (GdkXEvent *gdk_xevent,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent;
+ GtkPizza *pizza;
+
+ xevent = (XEvent *)gdk_xevent;
+
+ pizza = GTK_PIZZA (data);
+
+ switch (xevent->type)
+ {
+ case Expose:
+ if (xevent->xexpose.serial == pizza->configure_serial)
+ {
+ if (pizza->visibility == GDK_VISIBILITY_UNOBSCURED)
+ return GDK_FILTER_REMOVE;
+ else
+ {
+ xevent->xexpose.x += pizza->scroll_x;
+ xevent->xexpose.y += pizza->scroll_y;
+
+ break;
+ }
+ }
+ break;
+
+ case ConfigureNotify:
+ if ((xevent->xconfigure.x != 0) || (xevent->xconfigure.y != 0))
+ {
+ pizza->configure_serial = xevent->xconfigure.serial;
+ pizza->scroll_x = xevent->xconfigure.x;
+ pizza->scroll_y = xevent->xconfigure.y;
+ }
+ break;
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+/* Although GDK does have a GDK_VISIBILITY_NOTIFY event,
+ * there is no corresponding event in GTK, so we have
+ * to get the events from a filter
+ */
+static GdkFilterReturn
+gtk_pizza_main_filter (GdkXEvent *gdk_xevent,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent;
+ GtkPizza *pizza;
+
+ xevent = (XEvent *)gdk_xevent;
+ pizza = GTK_PIZZA (data);
+
+ if (xevent->type == VisibilityNotify)
+ {
+ switch (xevent->xvisibility.state)
+ {
+ case VisibilityFullyObscured:
+ pizza->visibility = GDK_VISIBILITY_FULLY_OBSCURED;
+ break;
+
+ case VisibilityPartiallyObscured:
+ pizza->visibility = GDK_VISIBILITY_PARTIAL;
+ break;
+
+ case VisibilityUnobscured:
+ pizza->visibility = GDK_VISIBILITY_UNOBSCURED;
+ break;
+ }
+
+ return GDK_FILTER_REMOVE;
+ }
+
+ return GDK_FILTER_CONTINUE;
projects / wxWidgets.git / blobdiff