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#include "gdkprivate-fb.h"
void
gdk_window_scroll (GdkWindow *window,
gint dx,
gint dy)
{
GdkWindowObject *private = GDK_WINDOW_P (window);
GdkRegion *invalidate_region;
GdkRectangle dest_rect;
GdkRectangle clip_rect;
GList *tmp_list;
gboolean handle_cursor;
g_return_if_fail (window != NULL);
g_return_if_fail (GDK_IS_WINDOW (window));
clip_rect.x = GDK_DRAWABLE_IMPL_FBDATA (window)->llim_x;
clip_rect.y = GDK_DRAWABLE_IMPL_FBDATA (window)->llim_y;
clip_rect.width = GDK_DRAWABLE_IMPL_FBDATA (window)->lim_x - GDK_DRAWABLE_IMPL_FBDATA (window)->llim_x;
clip_rect.height = GDK_DRAWABLE_IMPL_FBDATA (window)->lim_y - GDK_DRAWABLE_IMPL_FBDATA (window)->llim_y;
handle_cursor = gdk_fb_cursor_need_hide (&clip_rect);
clip_rect.x -= GDK_DRAWABLE_IMPL_FBDATA (window)->abs_x;
clip_rect.y -= GDK_DRAWABLE_IMPL_FBDATA (window)->abs_y;
invalidate_region = gdk_region_rectangle (&clip_rect);
dest_rect = clip_rect;
dest_rect.x += dx;
dest_rect.y += dy;
gdk_rectangle_intersect (&dest_rect, &clip_rect, &dest_rect);
if (handle_cursor)
gdk_fb_cursor_hide ();
if (dest_rect.width > 0 && dest_rect.height > 0)
{
GdkRegion *tmp_region;
tmp_region = gdk_region_rectangle (&dest_rect);
gdk_region_subtract (invalidate_region, tmp_region);
gdk_region_destroy (tmp_region);
gdk_fb_draw_drawable_2 (GDK_DRAWABLE_IMPL(window),
NULL,
GDK_DRAWABLE_IMPL(window),
dest_rect.x - dx,
dest_rect.y - dy,
dest_rect.x, dest_rect.y,
dest_rect.width, dest_rect.height,
FALSE, FALSE);
}
gdk_window_invalidate_region (window, invalidate_region, TRUE);
gdk_region_destroy (invalidate_region);
for (tmp_list = private->children; tmp_list; tmp_list = tmp_list->next)
gdk_fb_window_move_resize (tmp_list->data,
GDK_WINDOW_OBJECT(tmp_list->data)->x + dx,
GDK_WINDOW_OBJECT(tmp_list->data)->y + dy,
GDK_DRAWABLE_IMPL_FBDATA(tmp_list->data)->width,
GDK_DRAWABLE_IMPL_FBDATA(tmp_list->data)->height,
FALSE);
if (handle_cursor)
gdk_fb_cursor_unhide ();
}
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