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server: Clip the visible region of a window to the desktop window.

This commit is contained in:
Alexandre Julliard 2007-09-20 19:38:50 +02:00
parent 088e27c849
commit 5874b854ee
1 changed files with 11 additions and 12 deletions
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23
server/window.c
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@ -840,7 +840,7 @@ static inline struct window *get_top_clipping_window( struct window *win )
/* compute the visible region of a window, in window coordinates */
static struct region *get_visible_region( struct window *win, struct window *top, unsigned int flags )
static struct region *get_visible_region( struct window *win, unsigned int flags )
{
struct region *tmp = NULL, *region;
int offset_x, offset_y;
@ -853,7 +853,7 @@ static struct region *get_visible_region( struct window *win, struct window *top
/* create a region relative to the window itself */
if ((flags & DCX_PARENTCLIP) && win != top && win->parent)
if ((flags & DCX_PARENTCLIP) && win->parent && !is_desktop_window(win->parent))
{
set_region_client_rect( region, win->parent );
offset_region( region, -win->parent->client_rect.left, -win->parent->client_rect.top );
@ -891,11 +891,12 @@ static struct region *get_visible_region( struct window *win, struct window *top
offset_y = win->window_rect.top;
}
if (top && top != win && (tmp = create_empty_region()) != NULL)
if ((tmp = create_empty_region()) != NULL)
{
while (win != top && win->parent)
while (win->parent)
{
if (win->style & WS_CLIPSIBLINGS)
/* we don't clip out top-level siblings as that's up to the native windowing system */
if ((win->style & WS_CLIPSIBLINGS) && !is_desktop_window( win->parent ))
{
if (!clip_children( win->parent, win, region, 0, 0 )) goto error;
if (is_region_empty( region )) break;
@ -1332,12 +1333,11 @@ static void set_window_pos( struct window *win, struct window *previous,
const rectangle_t old_window_rect = win->window_rect;
const rectangle_t old_visible_rect = win->visible_rect;
const rectangle_t old_client_rect = win->client_rect;
struct window *top = get_top_clipping_window( win );
int visible = (win->style & WS_VISIBLE) || (swp_flags & SWP_SHOWWINDOW);
if (win->parent && !is_visible( win->parent )) visible = 0;
if (visible && !(old_vis_rgn = get_visible_region( win, top, DCX_WINDOW ))) return;
if (visible && !(old_vis_rgn = get_visible_region( win, DCX_WINDOW ))) return;
/* set the new window info before invalidating anything */
@ -1356,7 +1356,7 @@ static void set_window_pos( struct window *win, struct window *previous,
/* if the window is not visible, everything is easy */
if (!visible) return;
if (!(new_vis_rgn = get_visible_region( win, top, DCX_WINDOW )))
if (!(new_vis_rgn = get_visible_region( win, DCX_WINDOW )))
{
free_region( old_vis_rgn );
clear_error(); /* ignore error since the window info has been modified already */
@ -1441,17 +1441,16 @@ done:
static void set_window_region( struct window *win, struct region *region, int redraw )
{
struct region *old_vis_rgn = NULL, *new_vis_rgn;
struct window *top = get_top_clipping_window( win );
/* no need to redraw if window is not visible */
if (redraw && !is_visible( win )) redraw = 0;
if (redraw) old_vis_rgn = get_visible_region( win, top, DCX_WINDOW );
if (redraw) old_vis_rgn = get_visible_region( win, DCX_WINDOW );
if (win->win_region) free_region( win->win_region );
win->win_region = region;
if (old_vis_rgn && (new_vis_rgn = get_visible_region( win, top, DCX_WINDOW )))
if (old_vis_rgn && (new_vis_rgn = get_visible_region( win, DCX_WINDOW )))
{
/* expose anything revealed by the change */
if (xor_region( new_vis_rgn, old_vis_rgn, new_vis_rgn ))
@ -1867,7 +1866,7 @@ DECL_HANDLER(get_visible_region)
if (!win) return;
top = get_top_clipping_window( win );
if ((region = get_visible_region( win, top, req->flags )))
if ((region = get_visible_region( win, req->flags )))
{
rectangle_t *data;
map_win_region_to_screen( win, region );