fdo#51688 fdo#66745: drawinglayer: properly restore anti-aliasing mode

VclPixelProcessor2D: the constructor changes the anti-aliasing mode of
the given output device, and the destructor restores a hard-coded mode
instead of what was there before.

Due to this commit 5913506b2193e93ca2767ab7365ab2e76ed7848f turned off
anti-aliasing for FontWork objects simply by creating a
temporary VclPixelProcessor2D.

Change-Id: I7f7fcbf86b0dd425f599cd8e62fce3c69a2744bb
(cherry picked from commit 420aa16af0bbab4bdef80ceeb8d44cabe65840e0)
Reviewed-on: https://gerrit.libreoffice.org/5393
Reviewed-by: Tor Lillqvist <tml@iki.fi>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drawinglayer/inc/drawinglayer/processor2d/vclpixelprocessor2d.hxx b/drawinglayer/inc/drawinglayer/processor2d/vclpixelprocessor2d.hxx
index c3003f096467..f280da72ccdc 100644
--- a/drawinglayer/inc/drawinglayer/processor2d/vclpixelprocessor2d.hxx
+++ b/drawinglayer/inc/drawinglayer/processor2d/vclpixelprocessor2d.hxx
@@ -25,6 +25,8 @@
 #include <drawinglayer/processor2d/vclprocessor2d.hxx>
 #include <vcl/outdev.hxx>
 
+#include <boost/scoped_ptr.hpp>
+
 //////////////////////////////////////////////////////////////////////////////
 
 namespace drawinglayer
@@ -40,6 +42,9 @@ namespace drawinglayer
         class DRAWINGLAYER_DLLPUBLIC VclPixelProcessor2D : public VclProcessor2D
         {
         private:
+            struct Impl;
+            boost::scoped_ptr<Impl> m_pImpl;
+
         protected:
             /*  the local processor for BasePrinitive2D-Implementation based primitives,
                 called from the common process()-implementation