Add optional app-visible region to lp API.HEADmaster

1 files changed, 18 insertions, 0 deletions

diff --git a/lpdamage.c b/lpdamage.c
index 8d4922a..066748f 100644
--- a/lpdamage.c
+++ b/lpdamage.c
@@ -84,6 +84,17 @@ _xlightpipe_damage_window (light_pipe_window *lpw, int x, int y, int width, int
 	    old_y2 = new_y2;
 	lpw->public.damage.height = old_y2 - lpw->public.damage.y;
     }
+    if (lpw->public.damage_region)
+    {
+	XRectangle  r;
+
+	r.x = x;
+	r.y = y;
+	r.width = width;
+	r.height = height;
+	XUnionRectWithRegion (&r, lpw->public.damage_region,
+			      lpw->public.damage_region);
+    }
 }
 
 void
@@ -114,6 +125,13 @@ _xlightpipe_undamage_window (light_pipe_window *lpw)
     remove_damage (lpw);
     lpw->public.damage.x = lpw->public.damage.y = 0;
     lpw->public.damage.width = lpw->public.damage.height = 0;
+    if (lpw->public.damage_region)
+    {
+	Region  empty = XCreateRegion ();
+	XIntersectRegion (lpw->public.damage_region, empty,
+			  lpw->public.damage_region);
+	XDestroyRegion (empty);
+    }
 }
 
 light_pipe_window *