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
|
/*
* Copyright (C) 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
#if ENABLE(AX_THREAD_TEXT_APIS)
namespace WebCore {
class RenderBlock;
struct AXTextRunLineID {
void* containingBlock { nullptr };
size_t lineIndex { 0 };
AXTextRunLineID(void* containingBlock, size_t lineIndex)
: containingBlock(containingBlock)
, lineIndex(lineIndex)
{ }
bool operator==(const AXTextRunLineID&) const = default;
String debugDescription() const
{
TextStream stream;
stream << "LineID " << containingBlock << " " << lineIndex;
return stream.release();
}
};
struct AXTextRun {
// The line index of this run within the context of the containing RenderBlock of the main-thread AX object.
size_t lineIndex;
String text;
AXTextRun(size_t lineIndex, String&& text)
: lineIndex(lineIndex)
, text(WTFMove(text))
{ }
String debugDescription(void* containingBlock) const
{
AXTextRunLineID lineID = { containingBlock, lineIndex };
return makeString(lineID.debugDescription(), ": |", makeStringByReplacingAll(text, '\n', "{newline}"_s), "|(len ", text.length(), ")");
}
};
struct AXTextRuns {
// The containing block for the text runs. This is required because based on the structure
// of the AX tree, text runs for different objects can have the same line index but different
// containing blocks, meaning they are rendered on different lines.
// Do not de-reference. Use for comparison purposes only.
void* containingBlock { nullptr };
Vector<AXTextRun> runs;
AXTextRuns() = default;
AXTextRuns(RenderBlock* containingBlock, Vector<AXTextRun>&& runs)
: containingBlock(containingBlock)
, runs(WTFMove(runs))
{ }
String debugDescription() const;
size_t size() const { return runs.size(); }
const AXTextRun& at(size_t index) const
{
return (*this)[index];
}
const AXTextRun& operator[](size_t index) const
{
RELEASE_ASSERT(index < runs.size());
return runs[index];
}
unsigned runLength(size_t index) const
{
RELEASE_ASSERT(index < runs.size());
return runs[index].text.length();
}
unsigned lastRunLength() const
{
if (runs.isEmpty())
return 0;
return runs[runs.size() - 1].text.length();
}
unsigned totalLength() const
{
return runLengthSumTo(runs.size() - 1);
}
unsigned runLengthSumTo(size_t index) const;
size_t indexForOffset(unsigned textOffset) const;
AXTextRunLineID lineID(size_t index) const
{
RELEASE_ASSERT(index < runs.size());
return { containingBlock, runs[index].lineIndex };
}
String substring(unsigned start, unsigned length = StringImpl::MaxLength) const;
};
} // namespace WebCore
#endif // ENABLE(AX_THREAD_TEXT_APIS)
|
