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/*
* Copyright (C) 2017 Metrological Group B.V.
* Copyright (C) 2017 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CairoPaintingEngineThreaded.h"
#if USE(CAIRO) && USE(COORDINATED_GRAPHICS)
#include "CairoPaintingContext.h"
#include "CoordinatedTileBuffer.h"
#include "GraphicsContext.h"
#include "GraphicsLayer.h"
namespace WebCore {
namespace Cairo {
static void paintLayer(GraphicsContext& context, GraphicsLayer& layer, const IntRect& sourceRect, const IntRect& mappedSourceRect, const IntRect& targetRect, float contentsScale, bool supportsAlpha)
{
context.save();
context.clip(targetRect);
context.translate(targetRect.x(), targetRect.y());
if (supportsAlpha) {
context.setCompositeOperation(CompositeOperator::Copy);
context.fillRect(IntRect(IntPoint::zero(), sourceRect.size()), Color::transparentBlack);
context.setCompositeOperation(CompositeOperator::SourceOver);
}
context.translate(-sourceRect.x(), -sourceRect.y());
context.scale(FloatSize(contentsScale, contentsScale));
layer.paintGraphicsLayerContents(context, mappedSourceRect);
context.restore();
}
PaintingEngineThreaded::PaintingEngineThreaded(unsigned numThreads)
: m_workerPool(WorkerPool::create("PaintingThread"_s, numThreads))
{
}
PaintingEngineThreaded::~PaintingEngineThreaded()
{
}
void PaintingEngineThreaded::paint(GraphicsLayer& layer, CoordinatedTileBuffer& buffer, const IntRect& sourceRect, const IntRect& mappedSourceRect, const IntRect& targetRect, float contentsScale)
{
buffer.beginPainting();
PaintingOperations paintingOperations;
PaintingContext::record(paintingOperations, [&](GraphicsContext& context) {
paintLayer(context, layer, sourceRect, mappedSourceRect, targetRect, contentsScale, buffer.supportsAlpha());
});
m_workerPool->postTask([paintingOperations = WTFMove(paintingOperations), buffer = Ref { buffer }] {
PaintingContext::replay(buffer.get(), paintingOperations);
buffer->completePainting();
});
}
} // namespace Cairo
} // namespace WebCore
#endif // USE(CAIRO) && USE(COORDINATED_GRAPHICS)
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