From c472d5d8b76e17e4dd537ca20c9bfb144b06189c Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Fri, 9 Feb 2018 13:48:22 +0000
Subject: Fix fl_read_image() under MacOS platform when GUI is rescaled.

This commit also simplifies the platform-dependent support of fl_read_image():
only Fl_XXX_Screen_Driver::read_win_rectangle() contains platform-specific
code to capture pixels from the current window or from an offscreen buffer.
Platform-independent function Fl_Screen_Driver::traverse_to_gl_subwindows()
captures subwindows that intersect with the area fl_read_image() targets.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12653 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_Graphics_Driver.cxx | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/Fl_Graphics_Driver.cxx')

diff --git a/src/Fl_Graphics_Driver.cxx b/src/Fl_Graphics_Driver.cxx
index d7cb15031..05d609f14 100644
--- a/src/Fl_Graphics_Driver.cxx
+++ b/src/Fl_Graphics_Driver.cxx
@@ -221,6 +221,11 @@ unsigned Fl_Graphics_Driver::font_desc_size() {
   return (unsigned)sizeof(Fl_Fontdesc);
 }
 
+bool Fl_Graphics_Driver::overlay_rect_unscaled()
+{
+  return (scale() == int(scale()));
+}
+
 #ifndef FL_DOXYGEN
 Fl_Font_Descriptor::Fl_Font_Descriptor(const char* name, Fl_Fontsize Size) {
   next = 0;
-- 
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