1/*
2 * Copyright (C) 2017 Metrological Group B.V.
3 * Copyright (C) 2017 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials provided
14 * with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30#include "NicosiaPaintingEngineThreaded.h"
31
32#if USE(COORDINATED_GRAPHICS)
33
34#include "GraphicsContext.h"
35#include "GraphicsLayer.h"
36#include "NicosiaBuffer.h"
37#include "NicosiaPaintingContext.h"
38
39namespace Nicosia {
40using namespace WebCore;
41
42static void paintLayer(GraphicsContext& context, GraphicsLayer& layer, const IntRect& sourceRect, const IntRect& mappedSourceRect, const IntRect& targetRect, float contentsScale, bool supportsAlpha)
43{
44 context.save();
45 context.clip(targetRect);
46 context.translate(targetRect.x(), targetRect.y());
47
48 if (supportsAlpha) {
49 context.setCompositeOperation(CompositeCopy);
50 context.fillRect(IntRect(IntPoint::zero(), sourceRect.size()), Color::transparent);
51 context.setCompositeOperation(CompositeSourceOver);
52 }
53
54 context.translate(-sourceRect.x(), -sourceRect.y());
55 context.scale(FloatSize(contentsScale, contentsScale));
56
57 layer.paintGraphicsLayerContents(context, mappedSourceRect);
58
59 context.restore();
60}
61
62PaintingEngineThreaded::PaintingEngineThreaded(unsigned numThreads)
63 : m_workerPool(WorkerPool::create("PaintingThread"_s, numThreads))
64{
65}
66
67PaintingEngineThreaded::~PaintingEngineThreaded()
68{
69}
70
71bool PaintingEngineThreaded::paint(GraphicsLayer& layer, Ref<Buffer>&& buffer, const IntRect& sourceRect, const IntRect& mappedSourceRect, const IntRect& targetRect, float contentsScale)
72{
73 buffer->beginPainting();
74
75 PaintingOperations paintingOperations;
76 PaintingContext::record(paintingOperations,
77 [&](GraphicsContext& context)
78 {
79 paintLayer(context, layer, sourceRect, mappedSourceRect, targetRect, contentsScale, buffer->supportsAlpha());
80 });
81
82 m_workerPool->postTask([paintingOperations = WTFMove(paintingOperations), buffer = WTFMove(buffer)] {
83 PaintingContext::replay(buffer, paintingOperations);
84 buffer->completePainting();
85 });
86
87 return true;
88}
89
90} // namespace Nicosia
91
92#endif // USE(COORDINATED_GRAPHICS)
93