1/*
2 * Copyright (C) 2017-2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "ActiveDOMObject.h"
29#include "CanvasRenderingContext.h"
30#include <wtf/IsoMalloc.h>
31
32namespace WebCore {
33
34class GPUBasedCanvasRenderingContext : public CanvasRenderingContext, public ActiveDOMObject {
35 WTF_MAKE_ISO_NONALLOCATABLE(GPUBasedCanvasRenderingContext);
36public:
37
38 bool isGPUBased() const override { return true; }
39
40 bool isAccelerated() const override
41 {
42#if PLATFORM(WIN)
43 // FIXME: Implement accelerated canvas on Windows.
44 return false;
45#else
46 return true;
47#endif
48 }
49
50 virtual void reshape(int width, int height) = 0;
51 virtual void markLayerComposited() = 0;
52
53protected:
54 GPUBasedCanvasRenderingContext(CanvasBase& canvas)
55 : CanvasRenderingContext(canvas)
56 , ActiveDOMObject(canvas.scriptExecutionContext())
57 {
58 }
59};
60
61} // namespace WebCore
62
63SPECIALIZE_TYPE_TRAITS_CANVASRENDERINGCONTEXT(WebCore::GPUBasedCanvasRenderingContext, isGPUBased())
64