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
|
/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "AffineTransform.h"
#include "FloatRect.h"
#include "GlyphDisplayListCache.h"
#include "RotationDirection.h"
#include "TextFlags.h"
#include "TextPaintStyle.h"
#include <wtf/text/AtomString.h>
namespace WebCore {
class FilterOperations;
class FontCascade;
class RenderCombineText;
class ShadowData;
class TextRun;
class Text;
struct TextPaintStyle;
static inline AffineTransform rotation(const FloatRect& boxRect, RotationDirection direction)
{
return direction == RotationDirection::Clockwise
? AffineTransform(0, 1, -1, 0, boxRect.x() + boxRect.maxY(), boxRect.maxY() - boxRect.x())
: AffineTransform(0, -1, 1, 0, boxRect.x() - boxRect.maxY(), boxRect.x() + boxRect.maxY());
}
class TextPainter {
public:
TextPainter(GraphicsContext&, const FontCascade&, const RenderStyle&);
void setStyle(const TextPaintStyle& textPaintStyle) { m_style = textPaintStyle; }
void setShadow(const ShadowData* shadow) { m_shadow = shadow; }
void setShadowColorFilter(const FilterOperations* colorFilter) { m_shadowColorFilter = colorFilter; }
void setEmphasisMark(const AtomString& mark, float offset, const RenderCombineText*);
void paintRange(const TextRun&, const FloatRect& boxRect, const FloatPoint& textOrigin, unsigned start, unsigned end);
template<typename LayoutRun>
void setGlyphDisplayListIfNeeded(const LayoutRun& run, const PaintInfo& paintInfo, const RenderStyle& style, const TextRun& textRun)
{
if (!TextPainter::shouldUseGlyphDisplayList(paintInfo, style))
const_cast<LayoutRun&>(run).removeFromGlyphDisplayListCache();
else
m_glyphDisplayList = GlyphDisplayListCache::singleton().get(run, m_font, m_context, textRun, paintInfo);
}
static bool shouldUseGlyphDisplayList(const PaintInfo&, const RenderStyle&);
WEBCORE_EXPORT static void setForceUseGlyphDisplayListForTesting(bool);
WEBCORE_EXPORT static String cachedGlyphDisplayListsForTextNodeAsText(Text&, OptionSet<DisplayList::AsTextFlag>);
WEBCORE_EXPORT static void clearGlyphDisplayListCacheForTesting();
private:
template<typename LayoutRun>
static DisplayList::DisplayList* glyphDisplayListIfExists(const LayoutRun& run)
{
return GlyphDisplayListCache::singleton().getIfExists(run);
}
void paintTextOrEmphasisMarks(const FontCascade&, const TextRun&, const AtomString& emphasisMark, float emphasisMarkOffset,
const FloatPoint& textOrigin, unsigned startOffset, unsigned endOffset);
void paintTextWithShadows(const ShadowData*, const FilterOperations*, const FontCascade&, const TextRun&, const FloatRect& boxRect, const FloatPoint& textOrigin,
unsigned startOffset, unsigned endOffset, const AtomString& emphasisMark, float emphasisMarkOffset, bool stroked);
void paintTextAndEmphasisMarksIfNeeded(const TextRun&, const FloatRect& boxRect, const FloatPoint& textOrigin, unsigned startOffset, unsigned endOffset,
const TextPaintStyle&, const ShadowData*, const FilterOperations*);
GraphicsContext& m_context;
const FontCascade& m_font;
const RenderStyle& m_renderStyle;
TextPaintStyle m_style;
AtomString m_emphasisMark;
const ShadowData* m_shadow { nullptr };
const FilterOperations* m_shadowColorFilter { nullptr };
const RenderCombineText* m_combinedText { nullptr };
DisplayList::DisplayList* m_glyphDisplayList { nullptr };
float m_emphasisMarkOffset { 0 };
WritingMode m_writingMode;
};
inline void TextPainter::setEmphasisMark(const AtomString& mark, float offset, const RenderCombineText* combinedText)
{
m_emphasisMark = mark;
m_emphasisMarkOffset = offset;
m_combinedText = combinedText;
}
class ShadowApplier {
public:
ShadowApplier(const RenderStyle&, GraphicsContext&, const ShadowData*, const FilterOperations* colorFilter, const FloatRect& textRect, bool lastShadowIterationShouldDrawText = true, bool opaque = false, bool ignoreWritingMode = false);
FloatSize extraOffset() const { return m_extraOffset; }
bool nothingToDraw() const { return m_nothingToDraw; }
bool didSaveContext() const { return m_didSaveContext; }
~ShadowApplier();
private:
bool isLastShadowIteration();
bool shadowIsCompletelyCoveredByText(bool textIsOpaque);
FloatSize m_extraOffset;
GraphicsContext& m_context;
const ShadowData* m_shadow;
bool m_onlyDrawsShadow : 1;
bool m_avoidDrawingShadow : 1;
bool m_nothingToDraw : 1;
bool m_didSaveContext : 1;
};
} // namespace WebCore
|
