src/core/qgspaintenginehack.cpp

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/***************************************************************************
  qgspaintenginehack.cpp
  Hack paint engine flags
  -------------------
         begin                : July 2012
         copyright            : (C) Juergen E. Fischer
         email                : jef at norbit dot de

 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "qgspaintenginehack.h"

// Hack to workaround Qt #5114 by disabling PatternTransform
void QgsPaintEngineHack::fixFlags()
{
  gccaps = 0;
  gccaps |= ( QPaintEngine::PrimitiveTransform
              // | QPaintEngine::PatternTransform
              | QPaintEngine::PixmapTransform
              | QPaintEngine::PatternBrush
              // | QPaintEngine::LinearGradientFill
              // | QPaintEngine::RadialGradientFill
              // | QPaintEngine::ConicalGradientFill
              | QPaintEngine::AlphaBlend
              // | QPaintEngine::PorterDuff
              | QPaintEngine::PainterPaths
              | QPaintEngine::Antialiasing
              | QPaintEngine::BrushStroke
              | QPaintEngine::ConstantOpacity
              | QPaintEngine::MaskedBrush
              // | QPaintEngine::PerspectiveTransform
              | QPaintEngine::BlendModes
              // | QPaintEngine::ObjectBoundingModeGradients
#if QT_VERSION >= 0x040500
              | QPaintEngine::RasterOpModes
#endif
              | QPaintEngine::PaintOutsidePaintEvent
            );
}

void QgsPaintEngineHack::fixEngineFlags( QPaintEngine *engine )
{
  if ( !engine )
    return;

  QgsPaintEngineHack *hack = static_cast<QgsPaintEngineHack*>( engine );
  hack->fixFlags();
}