Fix frame invalidation on Haiku

* src/haiku_support.cc (FlipBuffers): Only set view bitmap if it
actually changed.

* src/haikuterm.c (haiku_clip_to_string_exactly)
(haiku_draw_window_cursor, haiku_draw_fringe_bitmap): Fix region
invalidation.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/haiku_support.cc b/src/haiku_support.cc
index cb9dfabc4e7..6caf8049d1f 100644
--- a/src/haiku_support.cc
+++ b/src/haiku_support.cc
@@ -1619,16 +1619,17 @@ public:
 	copy_bitmap = NULL;
       }
     if (!copy_bitmap)
-      copy_bitmap = new BBitmap (offscreen_draw_bitmap_1);
+      {
+	copy_bitmap = new BBitmap (offscreen_draw_bitmap_1);
+	SetViewBitmap (copy_bitmap, Frame (),
+		       Frame (), B_FOLLOW_NONE, 0);
+      }
     else
       copy_bitmap->ImportBits (offscreen_draw_bitmap_1);
 
     if (copy_bitmap->InitCheck () != B_OK)
       gui_abort ("Failed to init copy bitmap during buffer flip");
 
-    SetViewBitmap (copy_bitmap,
-		   Frame (), Frame (), B_FOLLOW_NONE, 0);
-
     Invalidate (&invalid_region);
     invalid_region.MakeEmpty ();
     UnlockLooper ();