1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* Copyright (C) 2018 Apple Inc. All rights reserved.
*
* 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
#pragma once
#if ENABLE(CSS_PAINTING_API)
#include "AffineTransform.h"
#include "CanvasBase.h"
#include "ContextDestructionObserver.h"
#include "EventTarget.h"
#include "ExceptionOr.h"
#include "ImageBuffer.h"
#include "IntSize.h"
#include "ScriptWrappable.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CanvasRenderingContext;
class ImageBitmap;
class PaintRenderingContext2D;
class CustomPaintCanvas final : public RefCounted<CustomPaintCanvas>, public CanvasBase, private ContextDestructionObserver {
WTF_MAKE_FAST_ALLOCATED;
public:
static Ref<CustomPaintCanvas> create(ScriptExecutionContext&, unsigned width, unsigned height);
virtual ~CustomPaintCanvas();
bool isCustomPaintCanvas() const final { return true; }
RefPtr<PaintRenderingContext2D> getContext();
CanvasRenderingContext* renderingContext() const final { return m_context.get(); }
GraphicsContext* drawingContext() const final;
GraphicsContext* existingDrawingContext() const final;
void didDraw(const std::optional<FloatRect>&, ShouldApplyPostProcessingToDirtyRect) final { }
AffineTransform baseTransform() const final { ASSERT(m_destinationGraphicsContext && m_copiedBuffer); return m_copiedBuffer->baseTransform(); }
Image* copiedImage() const final;
void clearCopiedImage() const final;
void replayDisplayList(GraphicsContext*) const;
void queueTaskKeepingObjectAlive(TaskSource, Function<void()>&&) final { };
void dispatchEvent(Event&) final { }
using RefCounted::ref;
using RefCounted::deref;
private:
CustomPaintCanvas(ScriptExecutionContext&, unsigned width, unsigned height);
void refCanvasBase() final { ref(); }
void derefCanvasBase() final { deref(); }
ScriptExecutionContext* canvasBaseScriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
std::unique_ptr<CanvasRenderingContext> m_context;
mutable GraphicsContext* m_destinationGraphicsContext = nullptr;
mutable RefPtr<ImageBuffer> m_copiedBuffer;
mutable RefPtr<Image> m_copiedImage;
};
}
SPECIALIZE_TYPE_TRAITS_CANVAS(WebCore::CustomPaintCanvas, isCustomPaintCanvas())
#endif
|
