From fad867a5d37b5162255a338f5f5218ff852f8852 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Tue, 12 Apr 2022 09:20:34 +0200
Subject: Modify test/cairo_test.cxx to show roles of OPTION_CAIRO and
 OPTION_CAIROEXT.

Also make clear that these options require, for now, Fl_Double_Window to work cross-platform.
---
 src/drivers/X11/Fl_X11_Window_Driver.cxx | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/drivers/X11')

diff --git a/src/drivers/X11/Fl_X11_Window_Driver.cxx b/src/drivers/X11/Fl_X11_Window_Driver.cxx
index 5cf8bc59d..725f8f5e0 100644
--- a/src/drivers/X11/Fl_X11_Window_Driver.cxx
+++ b/src/drivers/X11/Fl_X11_Window_Driver.cxx
@@ -156,6 +156,9 @@ void Fl_X11_Window_Driver::flush_double(int erase_overlay)
     if (pWindow->damage() & ~FL_DAMAGE_EXPOSE) {
       fl_clip_region(i->region); i->region = 0;
       fl_window = other_xid;
+# if defined(FLTK_HAVE_CAIROEXT)
+      if (Fl::cairo_autolink_context()) Fl::cairo_make_current(pWindow);
+# endif
       draw();
       fl_window = i->xid;
     }
-- 
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