mirrors/FreeRDP
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix drawing with negative window origin

Browse Source 
Since REGION16 uses unsigned values, when appWindow->x or appWindow->y
is negative, the region will have a very large left or top value.

Avoid this problem by clamping to 0 before casting to an unsigned value.
This commit is contained in:
Peter Harris 2015-09-03 18:42:53 -04:00
parent 72d901454c
commit 769ac2d35f
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
client/X11/xf_rail.c
View File

@ -222,10 +222,10 @@ void xf_rail_invalidate_region(xfContext* xfc, REGION16* invalidRegion)
if (appWindow)
{
windowRect.left = appWindow->x;
windowRect.top = appWindow->y;
windowRect.right = appWindow->x + appWindow->width;
windowRect.bottom = appWindow->y + appWindow->height;
windowRect.left = MAX(appWindow->x, 0);
windowRect.top = MAX(appWindow->y, 0);
windowRect.right = MAX(appWindow->x + appWindow->width, 0);
windowRect.bottom = MAX(appWindow->y + appWindow->height, 0);
region16_clear(&windowInvalidRegion);
region16_intersect_rect(&windowInvalidRegion, invalidRegion, &windowRect);