# HG changeset patch
# User Mike Miller <mtmiller@octave.org>
# Date 1524675119 25200
# Node ID 5daeb404908867d6e3383302188763a04f03ecda
# Parent  ca740fb8b49182f89952c7209d3cb18b3f32d6aa
gui: fix editor rendering on some displays, disable QScintilla buffered drawing

* octave-qscintilla.cc (octave_qscintilla::octave_qscintilla): Disable buffered
bitmap drawing mode on all systems. Has no effect on some systems, improves
appearance on some GNU/Linux systems with non-integer HiDPI scaling.

diff -r ca740fb8b491 -r 5daeb4049088 libgui/src/m-editor/octave-qscintilla.cc
--- a/libgui/src/m-editor/octave-qscintilla.cc	Fri Jun 29 12:37:42 2018 -0400
+++ b/libgui/src/m-editor/octave-qscintilla.cc	Wed Apr 25 09:51:59 2018 -0700
@@ -117,6 +117,9 @@
     // clear scintilla edit shortcuts that are handled by the editor
     QsciCommandSet *cmd_set = standardCommands ();
 
+    // Disable buffered drawing on all systems
+    SendScintilla (SCI_SETBUFFEREDDRAW, false);
+
 #if defined (HAVE_QSCI_VERSION_2_6_0)
     // find () was added in QScintilla 2.6
     cmd_set->find (QsciCommand::SelectionCopy)->setKey (0);