From d1c7caec3bf726ac137566ced91d067591a71e7e Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Wed, 2 Dec 2020 14:39:37 +0100
Subject: Improve Fl_Graphics_Driver::cache_size() when GUI is scaled.

The change lets this function enlarge the size only when strictly necessary
for image tiling.
---
 src/drivers/X11/Fl_X11_Screen_Driver.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/drivers/X11')

diff --git a/src/drivers/X11/Fl_X11_Screen_Driver.cxx b/src/drivers/X11/Fl_X11_Screen_Driver.cxx
index 539fdfdb3..ec3a6e0d2 100644
--- a/src/drivers/X11/Fl_X11_Screen_Driver.cxx
+++ b/src/drivers/X11/Fl_X11_Screen_Driver.cxx
@@ -800,7 +800,7 @@ Fl_RGB_Image *Fl_X11_Screen_Driver::read_win_rectangle(int X, int Y, int w, int
       sh = screens[ns].height;
     }
     if (win && !allow_outside && int(s) != s) {
-      ws = (w+1) * s; // matches what Fl_Graphics_Driver::cache_size() does
+      ws = (w+1) * s; // approximates what Fl_Graphics_Driver::cache_size() does
       hs = (h+1) * s;
       if (Xs + ws >= int(win->w()*s)) ws = win->w()*s - Xs -1;
       if (Ys + hs >= int(win->h()*s)) hs = win->h()*s - Ys -1;
-- 
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