forked from amazingfate/loongoffice
d4bfa55209
impBufferDevice now can create its mpContent with alpha; that is used when painting, blending mpContent's alpha with mpMask/mpAlpha/fTrans. That allows to paint to the buffer device and get actual transparency of the painted objects in one pass, to process further (e.g., modify transparency separately, or use it to get mask). Required for subsequent soft edge effect improvement Change-Id: If19c160581ce9a515d86222dd2fab06f746df2da Reviewed-on: https://gerrit.libreoffice.org/c/core/+/95030 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <vcl/virdev.hxx>
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namespace basegfx
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{
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class B2DRange;
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}
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// support methods for vcl direct gradient rendering
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namespace drawinglayer
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{
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class impBufferDevice
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{
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OutputDevice& mrOutDev;
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VclPtr<VirtualDevice> mpContent;
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VclPtr<VirtualDevice> mpMask;
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VclPtr<VirtualDevice> mpAlpha;
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tools::Rectangle maDestPixel;
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bool mbContentTransparent;
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public:
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impBufferDevice(OutputDevice& rOutDev, const basegfx::B2DRange& rRange,
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bool bContentTransparent = false);
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~impBufferDevice();
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void paint(double fTrans = 0.0);
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bool isVisible() const { return !maDestPixel.IsEmpty(); }
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VirtualDevice& getContent();
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VirtualDevice& getMask();
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VirtualDevice& getTransparence();
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};
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} // end of namespace drawinglayer
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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