From a1115f13e37d8b8b816dbd9213505288f781e0b8 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sun, 8 Mar 2020 20:16:34 +0100
Subject: Improve use of fl_scroll within Fl_Overlay_Window on macOS. This is a
 partial fix for "[fltk.general] scroll and overlay window" dated 7 march
 2020. Mixing of Fl_Scroll and Fl_Overlay_Window is now OK also on a retina
 display, but there are still problems when the window is scaled.

---
 src/drivers/Quartz/Fl_Quartz_Image_Surface_Driver.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/drivers/Quartz/Fl_Quartz_Image_Surface_Driver.cxx b/src/drivers/Quartz/Fl_Quartz_Image_Surface_Driver.cxx
index b25bda07c..45bef28a4 100644
--- a/src/drivers/Quartz/Fl_Quartz_Image_Surface_Driver.cxx
+++ b/src/drivers/Quartz/Fl_Quartz_Image_Surface_Driver.cxx
@@ -70,7 +70,7 @@ Fl_Quartz_Image_Surface_Driver::Fl_Quartz_Image_Surface_Driver(int w, int h, int
   offscreen = off ? off : CGBitmapContextCreate(calloc(W*H,4), W, H, 8, W*4, lut, kCGImageAlphaPremultipliedLast);
   CGColorSpaceRelease(lut);
   driver(new Fl_Quartz_Graphics_Driver);
-  CGContextTranslateCTM(offscreen, 0.5, -0.5); // as when drawing to a window
+  CGContextTranslateCTM(offscreen, 0.5*s, -0.5*s); // as when drawing to a window
   if (high_res) {
     CGContextScaleCTM(offscreen, s, s);
   }
-- 
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