1/*
2 * Copyright (C) 2017 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "CanvasRenderingContext.h"
29
30#include "ExceptionOr.h"
31#include "ImageBitmapRenderingContextSettings.h"
32#include "ImageBufferData.h"
33#include <memory>
34#include <wtf/RefPtr.h>
35
36namespace WebCore {
37
38class ImageBitmap;
39class ImageBuffer;
40
41class ImageBitmapRenderingContext final : public CanvasRenderingContext {
42 WTF_MAKE_ISO_ALLOCATED(ImageBitmapRenderingContext);
43public:
44 static std::unique_ptr<ImageBitmapRenderingContext> create(CanvasBase&, ImageBitmapRenderingContextSettings&&);
45
46 enum class BitmapMode {
47 Valid,
48 Blank
49 };
50
51 ~ImageBitmapRenderingContext();
52
53 HTMLCanvasElement* canvas() const;
54
55 ExceptionOr<void> transferFromImageBitmap(RefPtr<ImageBitmap>);
56
57 BitmapMode bitmapMode() { return m_bitmapMode; }
58 bool hasAlpha() { return m_settings.alpha; }
59
60private:
61 ImageBitmapRenderingContext(CanvasBase&, ImageBitmapRenderingContextSettings&&);
62
63 bool isBitmapRenderer() const final { return true; }
64 bool isAccelerated() const override;
65
66 void setOutputBitmap(RefPtr<ImageBitmap>);
67
68 BitmapMode m_bitmapMode { BitmapMode::Blank };
69 ImageBitmapRenderingContextSettings m_settings;
70};
71
72}
73
74SPECIALIZE_TYPE_TRAITS_CANVASRENDERINGCONTEXT(WebCore::ImageBitmapRenderingContext, isBitmapRenderer())
75