From: Christian Hergert <chergert@redhat.com>
Date: Wed, 9 Oct 2019 17:43:34 +0000 (-0700)
Subject: textview: fix off-by-one in y_range invalidation
X-Git-Tag: archive/raspbian/4.4.1+ds1-2+rpi1^2~18^2~20^2~757^2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=e4a00f864d845398e77bdeafdffd7f98b1d4cc3b;p=gtk4.git

textview: fix off-by-one in y_range invalidation

Previously, with selection bounds, we could have a state where a line
display with selections set would eroniously stay in the cache. This
aggresively releases those at the boundary cases fixing deselection
drawing state.
---

diff --git a/gtk/gtktextlinedisplaycache.c b/gtk/gtktextlinedisplaycache.c
index c15d8907d6..b6295b6f55 100644
--- a/gtk/gtktextlinedisplaycache.c
+++ b/gtk/gtktextlinedisplaycache.c
@@ -681,7 +681,7 @@ gtk_text_line_display_cache_invalidate_y_range (GtkTextLineDisplayCache *cache,
       cache_y = _gtk_text_btree_find_line_top (btree, display->line, layout);
       cache_height = display->height;
 
-      if (cache_y + cache_height > y && cache_y < y + old_height)
+      if (cache_y + cache_height >= y && cache_y <= y + old_height)
         {
           gtk_text_line_display_cache_invalidate_display (cache, display, cursors_only);