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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (C) 2021-2023 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. ``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
* 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
#include "GraphicsContext.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
enum class NullGraphicsContextPaintInvalidationReasons : uint8_t {
None,
InvalidatingControlTints,
InvalidatingImagesWithAsyncDecodes,
DetectingContentfulPaint
};
class NullGraphicsContext : public GraphicsContext {
WTF_MAKE_TZONE_ALLOCATED_INLINE(NullGraphicsContext);
public:
using PaintInvalidationReasons = NullGraphicsContextPaintInvalidationReasons;
NullGraphicsContext() = default;
NullGraphicsContext(PaintInvalidationReasons reasons)
: m_paintInvalidationReasons(reasons)
{
}
private:
#if USE(CG)
bool isCALayerContext() const final { return false; }
#endif
bool paintingDisabled() const final { return true; }
bool performingPaintInvalidation() const final { return m_paintInvalidationReasons != PaintInvalidationReasons::None; }
bool invalidatingControlTints() const final { return m_paintInvalidationReasons == PaintInvalidationReasons::InvalidatingControlTints; }
bool invalidatingImagesWithAsyncDecodes() const final { return m_paintInvalidationReasons == PaintInvalidationReasons::InvalidatingImagesWithAsyncDecodes; }
bool detectingContentfulPaint() const final { return m_paintInvalidationReasons == PaintInvalidationReasons::DetectingContentfulPaint; }
void didUpdateState(GraphicsContextState&) final { }
void drawNativeImageInternal(NativeImage&, const FloatRect&, const FloatRect&, ImagePaintingOptions) final { }
void drawSystemImage(SystemImage&, const FloatRect&) final { };
void drawPattern(NativeImage&, const FloatRect&, const FloatRect&, const AffineTransform&, const FloatPoint&, const FloatSize&, ImagePaintingOptions) final { }
IntRect clipBounds() const final { return { }; }
#if USE(CG)
void applyStrokePattern() final { }
void applyFillPattern() final { }
void drawPath(const Path&) final { }
#endif
void drawRect(const FloatRect&, float = 1) final { }
void drawLine(const FloatPoint&, const FloatPoint&) final { }
void drawEllipse(const FloatRect&) final { }
void fillPath(const Path&) final { }
void strokePath(const Path&) final { }
void fillRect(const FloatRect&, RequiresClipToRect) final { }
void fillRect(const FloatRect&, Gradient&, const AffineTransform&, RequiresClipToRect) final { }
void fillRect(const FloatRect&, const Color&) final { }
void fillRoundedRectImpl(const FloatRoundedRect&, const Color&) final { }
void strokeRect(const FloatRect&, float) final { }
void clipPath(const Path&, WindRule = WindRule::EvenOdd) final { }
void drawLinesForText(const FloatPoint&, float, std::span<const FloatSegment>, bool, bool, StrokeStyle) final { }
void setLineCap(LineCap) final { }
void setLineDash(const DashArray&, float) final { }
void setLineJoin(LineJoin) final { }
void setMiterLimit(float) final { }
void clipOut(const Path&) final { }
void scale(const FloatSize&) final { }
void rotate(float) final { }
void translate(float, float) final { }
void concatCTM(const AffineTransform&) final { }
void setCTM(const AffineTransform&) final { }
AffineTransform getCTM(IncludeDeviceScale = PossiblyIncludeDeviceScale) const final { return { }; }
void clearRect(const FloatRect&) final { }
void resetClip() final { }
void clip(const FloatRect&) final { }
void clipOut(const FloatRect&) final { }
void save(GraphicsContextState::Purpose = GraphicsContextState::Purpose::SaveRestore) final { }
void restore(GraphicsContextState::Purpose = GraphicsContextState::Purpose::SaveRestore) final { }
void drawRaisedEllipse(const FloatRect&, const Color&, const Color&) final { }
FloatSize drawText(const FontCascade&, const TextRun&, const FloatPoint&, unsigned = 0, std::optional<unsigned> = std::nullopt) final { return { }; }
void drawGlyphs(const Font&, std::span<const GlyphBufferGlyph>, std::span<const GlyphBufferAdvance>, const FloatPoint&, FontSmoothingMode) final { }
void drawDecomposedGlyphs(const Font&, const DecomposedGlyphs&) final { }
void drawEmphasisMarks(const FontCascade&, const TextRun&, const AtomString&, const FloatPoint&, unsigned = 0, std::optional<unsigned> = std::nullopt) final { }
void drawBidiText(const FontCascade&, const TextRun&, const FloatPoint&, FontCascade::CustomFontNotReadyAction = FontCascade::CustomFontNotReadyAction::DoNotPaintIfFontNotReady) final { }
void drawDotsForDocumentMarker(const FloatRect&, DocumentMarkerLineStyle) final { }
ImageDrawResult drawImage(Image&, const FloatRect&, const FloatRect&, ImagePaintingOptions = { ImageOrientation::Orientation::FromImage }) final { return ImageDrawResult::DidNothing; }
ImageDrawResult drawTiledImage(Image&, const FloatRect&, const FloatPoint&, const FloatSize&, const FloatSize&, ImagePaintingOptions = { }) final { return ImageDrawResult::DidNothing; }
ImageDrawResult drawTiledImage(Image&, const FloatRect&, const FloatRect&, const FloatSize&, Image::TileRule, Image::TileRule, ImagePaintingOptions = { }) final { return ImageDrawResult::DidNothing; }
void drawFocusRing(const Path&, float, const Color&) final { }
void drawFocusRing(const Vector<FloatRect>&, float, float, const Color&) final { }
void drawImageBuffer(ImageBuffer&, const FloatRect&, const FloatRect&, ImagePaintingOptions = { }) final { }
void clipRoundedRect(const FloatRoundedRect&) final { }
void clipOutRoundedRect(const FloatRoundedRect&) final { }
void clipToImageBuffer(ImageBuffer&, const FloatRect&) final { }
void fillRect(const FloatRect&, Gradient&) final { }
void fillRect(const FloatRect&, const Color&, CompositeOperator, BlendMode = BlendMode::Normal) final { }
void fillRoundedRect(const FloatRoundedRect&, const Color&, BlendMode = BlendMode::Normal) final { }
void fillRectWithRoundedHole(const FloatRect&, const FloatRoundedRect&, const Color&) final { }
#if ENABLE(VIDEO)
void drawVideoFrame(VideoFrame&, const FloatRect&, ImageOrientation, bool) final { }
#endif
private:
const PaintInvalidationReasons m_paintInvalidationReasons { PaintInvalidationReasons::None };
};
} // namespace WebCore
|
