ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Clip parent client area when using the drawable from a higher level 

parent.
This commit is contained in:
Alexandre Julliard 2001-06-20 00:22:40 +00:00
parent 8ffcf755fe
commit 64264be49b
1 changed files with 18 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
dlls/x11drv/winpos.c
View File

@ -59,16 +59,16 @@ DEFAULT_DEBUG_CHANNEL(x11drv);
*
* Clip all children of a given window out of the visible region
*/
static void clip_children( WND *win, WND *last, HRGN hrgn, int whole_window )
static int clip_children( WND *win, WND *last, HRGN hrgn, int whole_window )
{
WND *ptr;
HRGN rectRgn;
int x, y;
int x, y, ret = SIMPLEREGION;
/* first check if we have anything to do */
for (ptr = win->child; ptr && ptr != last; ptr = ptr->next)
if (ptr->dwStyle & WS_VISIBLE) break;
if (!ptr || ptr == last) return; /* no children to clip */
if (!ptr || ptr == last) return ret; /* no children to clip */
if (whole_window)
{
@ -84,12 +84,13 @@ static void clip_children( WND *win, WND *last, HRGN hrgn, int whole_window )
{
SetRectRgn( rectRgn, ptr->rectWindow.left + x, ptr->rectWindow.top + y,
ptr->rectWindow.right + x, ptr->rectWindow.bottom + y );
if (CombineRgn( hrgn, hrgn, rectRgn, RGN_DIFF ) == NULLREGION)
if ((ret = CombineRgn( hrgn, hrgn, rectRgn, RGN_DIFF )) == NULLREGION)
break; /* no need to go on, region is empty */
}
ptr = ptr->next;
}
DeleteObject( rectRgn );
return ret;
}
@ -131,25 +132,36 @@ static HRGN get_visible_region( WND *win, WND *top, UINT flags, int mode )
if ((flags & DCX_CLIPCHILDREN) && (mode != ClipByChildren))
{
/* we need to clip children by hand */
clip_children( win, NULL, rgn, (flags & DCX_WINDOW) );
if (clip_children( win, NULL, rgn, (flags & DCX_WINDOW) ) == NULLREGION) return rgn;
}
if (top && top != win) /* need to clip siblings of ancestors */
{
WND *ptr = win;
HRGN tmp = 0;
OffsetRgn( rgn, xoffset, yoffset );
for (;;)
{
if (ptr->dwStyle & WS_CLIPSIBLINGS) clip_children( ptr->parent, ptr, rgn, FALSE );
if (ptr->dwStyle & WS_CLIPSIBLINGS)
{
if (clip_children( ptr->parent, ptr, rgn, FALSE ) == NULLREGION) break;
}
if (ptr == top) break;
ptr = ptr->parent;
/* clip to parent client area */
if (tmp) SetRectRgn( tmp, 0, 0, ptr->rectClient.right - ptr->rectClient.left,
ptr->rectClient.bottom - ptr->rectClient.top );
else tmp = CreateRectRgn( 0, 0, ptr->rectClient.right - ptr->rectClient.left,
ptr->rectClient.bottom - ptr->rectClient.top );
CombineRgn( rgn, rgn, tmp, RGN_AND );
OffsetRgn( rgn, ptr->rectClient.left, ptr->rectClient.top );
xoffset += ptr->rectClient.left;
yoffset += ptr->rectClient.top;
}
/* make it relative to the target window again */
OffsetRgn( rgn, -xoffset, -yoffset );
if (tmp) DeleteObject( tmp );
}
return rgn;