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
|
/*
* Copyright (C) 2018-2023 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. 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
#include "Font.h"
#include "InlineItem.h"
#include "InlineLine.h"
#include "LayoutUnits.h"
#include <wtf/Range.h>
#include <wtf/WeakHashSet.h>
#include <wtf/text/TextBreakIterator.h>
namespace WebCore {
namespace TextSpacing {
struct SpacingState;
}
class RenderStyle;
class TextRun;
namespace Layout {
struct ExpansionInfo;
class InlineTextBox;
class InlineTextItem;
class TextUtil {
public:
enum class UseTrailingWhitespaceMeasuringOptimization : bool { No, Yes };
static InlineLayoutUnit width(const InlineTextItem&, const FontCascade&, InlineLayoutUnit contentLogicalLeft);
static InlineLayoutUnit width(const InlineTextItem&, const FontCascade&, unsigned from, unsigned to, InlineLayoutUnit contentLogicalLeft, UseTrailingWhitespaceMeasuringOptimization = UseTrailingWhitespaceMeasuringOptimization::Yes, TextSpacing::SpacingState spacingState = { });
static InlineLayoutUnit width(const InlineTextBox&, const FontCascade&, unsigned from, unsigned to, InlineLayoutUnit contentLogicalLeft, UseTrailingWhitespaceMeasuringOptimization = UseTrailingWhitespaceMeasuringOptimization::Yes, TextSpacing::SpacingState spacingState = { });
static InlineLayoutUnit trailingWhitespaceWidth(const InlineTextBox&, const FontCascade&, size_t startPosition, size_t endPosition);
using FallbackFontList = SingleThreadWeakHashSet<const Font>;
enum class IncludeHyphen : bool { No, Yes };
static FallbackFontList fallbackFontsForText(StringView, const RenderStyle&, IncludeHyphen);
struct EnclosingAscentDescent {
InlineLayoutUnit ascent { 0.f };
InlineLayoutUnit descent { 0.f };
};
enum class ShouldUseSimpleGlyphOverflowCodePath : bool { No, Yes };
static EnclosingAscentDescent enclosingGlyphBoundsForText(StringView, const RenderStyle&, ShouldUseSimpleGlyphOverflowCodePath);
struct WordBreakLeft {
size_t length { 0 };
InlineLayoutUnit logicalWidth { 0 };
};
static WordBreakLeft breakWord(const InlineTextBox&, size_t start, size_t length, InlineLayoutUnit width, InlineLayoutUnit availableWidth, InlineLayoutUnit contentLogicalLeft, const FontCascade&);
static WordBreakLeft breakWord(const InlineTextItem&, const FontCascade&, InlineLayoutUnit textWidth, InlineLayoutUnit availableWidth, InlineLayoutUnit contentLogicalLeft);
static bool mayBreakInBetween(const InlineTextItem& previousInlineItem, const InlineTextItem& nextInlineItem);
// FIXME: Remove when computeInlinePreferredLogicalWidths is all IFC.
static bool mayBreakInBetween(String previousContent, const RenderStyle& previousContentStyle, String nextContent, const RenderStyle& nextContentStyle);
static unsigned findNextBreakablePosition(CachedLineBreakIteratorFactory&, unsigned startPosition, const RenderStyle&);
static TextBreakIterator::LineMode::Behavior lineBreakIteratorMode(LineBreak);
static TextBreakIterator::ContentAnalysis contentAnalysis(WordBreak);
static bool shouldPreserveSpacesAndTabs(const Box&);
static bool shouldPreserveNewline(const Box&);
static bool isWrappingAllowed(const RenderStyle&);
static bool shouldTrailingWhitespaceHang(const RenderStyle&);
static bool isStrongDirectionalityCharacter(char32_t);
static bool containsStrongDirectionalityText(StringView);
static AtomString ellipsisTextInInlineDirection(bool isHorizontal = true);
static InlineLayoutUnit hyphenWidth(const RenderStyle&);
static size_t firstUserPerceivedCharacterLength(const InlineTextItem&);
static size_t firstUserPerceivedCharacterLength(const InlineTextBox&, size_t startPosition, size_t length);
static TextDirection directionForTextContent(StringView);
static bool hasHangablePunctuationStart(const InlineTextItem&, const RenderStyle&);
static float hangablePunctuationStartWidth(const InlineTextItem&, const RenderStyle&);
static bool hasHangablePunctuationEnd(const InlineTextItem&, const RenderStyle&);
static float hangablePunctuationEndWidth(const InlineTextItem&, const RenderStyle&);
static bool hasHangableStopOrCommaEnd(const InlineTextItem&, const RenderStyle&);
static float hangableStopOrCommaEndWidth(const InlineTextItem&, const RenderStyle&);
static bool canUseSimplifiedTextMeasuring(StringView, const FontCascade&, bool whitespaceIsCollapsed, const RenderStyle* firstLineStyle);
static bool hasPositionDependentContentWidth(StringView);
static char32_t baseCharacterFromGraphemeCluster(StringView graphemeCluster);
static char32_t lastBaseCharacterFromText(StringView);
};
} // namespace Layout
} // namespace WebCore
|
