From d27e7e018045c2871cb18dc93910c335c756d41b Mon Sep 17 00:00:00 2001
From: Sergey Bugaev <bugaevc@gmail.com>
Date: Fri, 28 Jul 2023 18:37:09 +0300
Subject: [PATCH] label: Microoptimize width-for-height computation

We told Pango to limit width to mid pixels, and it returned a layout
size of text_width by text_height; text_width can be considerably
smaller than mid. If the layout fits, we know that it fits at
text_width, so set max to that. This lets us skip many iterations in a
typical case.
---
 gtk/gtklabel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index f223bae0d3..b230c0b05f 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -1202,7 +1202,7 @@ my_pango_layout_get_width_for_height (PangoLayout *layout,
       else if (text_height > for_height)
         min = mid + 1;
       else
-        max = mid;
+        max = text_width;
     }
 
   return min * PANGO_SCALE;