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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "RubyUtils.h"
#include "nsRubyFrame.h"
#include "nsRubyBaseFrame.h"
#include "nsRubyTextFrame.h"
#include "nsRubyBaseContainerFrame.h"
#include "nsRubyTextContainerFrame.h"
using namespace mozilla;
NS_DECLARE_FRAME_PROPERTY_SMALL_VALUE(ReservedISize, nscoord)
/* static */ void
RubyUtils::SetReservedISize(nsIFrame* aFrame, nscoord aISize)
{
MOZ_ASSERT(IsExpandableRubyBox(aFrame));
aFrame->SetProperty(ReservedISize(), aISize);
}
/* static */ void
RubyUtils::ClearReservedISize(nsIFrame* aFrame)
{
MOZ_ASSERT(IsExpandableRubyBox(aFrame));
aFrame->RemoveProperty(ReservedISize());
}
/* static */ nscoord
RubyUtils::GetReservedISize(nsIFrame* aFrame)
{
MOZ_ASSERT(IsExpandableRubyBox(aFrame));
return aFrame->GetProperty(ReservedISize());
}
AutoRubyTextContainerArray::AutoRubyTextContainerArray(
nsRubyBaseContainerFrame* aBaseContainer)
{
for (nsIFrame* frame = aBaseContainer->GetNextSibling();
frame && frame->GetType() == nsGkAtoms::rubyTextContainerFrame;
frame = frame->GetNextSibling()) {
AppendElement(static_cast<nsRubyTextContainerFrame*>(frame));
}
}
nsIFrame*
RubyColumn::Iterator::operator*() const
{
nsIFrame* frame;
if (mIndex == -1) {
frame = mColumn.mBaseFrame;
} else {
frame = mColumn.mTextFrames[mIndex];
}
MOZ_ASSERT(frame, "Frame here cannot be null");
return frame;
}
void
RubyColumn::Iterator::SkipUntilExistingFrame()
{
if (mIndex == -1) {
if (mColumn.mBaseFrame) {
return;
}
++mIndex;
}
int32_t numTextFrames = mColumn.mTextFrames.Length();
for (; mIndex < numTextFrames; ++mIndex) {
if (mColumn.mTextFrames[mIndex]) {
break;
}
}
}
RubySegmentEnumerator::RubySegmentEnumerator(nsRubyFrame* aRubyFrame)
{
nsIFrame* frame = aRubyFrame->PrincipalChildList().FirstChild();
MOZ_ASSERT(!frame ||
frame->GetType() == nsGkAtoms::rubyBaseContainerFrame);
mBaseContainer = static_cast<nsRubyBaseContainerFrame*>(frame);
}
void
RubySegmentEnumerator::Next()
{
MOZ_ASSERT(mBaseContainer);
nsIFrame* frame = mBaseContainer->GetNextSibling();
while (frame && frame->GetType() != nsGkAtoms::rubyBaseContainerFrame) {
frame = frame->GetNextSibling();
}
mBaseContainer = static_cast<nsRubyBaseContainerFrame*>(frame);
}
RubyColumnEnumerator::RubyColumnEnumerator(
nsRubyBaseContainerFrame* aBaseContainer,
const AutoRubyTextContainerArray& aTextContainers)
: mAtIntraLevelWhitespace(false)
{
const uint32_t rtcCount = aTextContainers.Length();
mFrames.SetCapacity(rtcCount + 1);
nsIFrame* rbFrame = aBaseContainer->PrincipalChildList().FirstChild();
MOZ_ASSERT(!rbFrame || rbFrame->GetType() == nsGkAtoms::rubyBaseFrame);
mFrames.AppendElement(static_cast<nsRubyContentFrame*>(rbFrame));
for (uint32_t i = 0; i < rtcCount; i++) {
nsRubyTextContainerFrame* container = aTextContainers[i];
// If the container is for span, leave a nullptr here.
// Spans do not take part in pairing.
nsIFrame* rtFrame = !container->IsSpanContainer() ?
container->PrincipalChildList().FirstChild() : nullptr;
MOZ_ASSERT(!rtFrame || rtFrame->GetType() == nsGkAtoms::rubyTextFrame);
mFrames.AppendElement(static_cast<nsRubyContentFrame*>(rtFrame));
}
// We have to init mAtIntraLevelWhitespace to be correct for the
// first column. There are two ways we could end up with intra-level
// whitespace in our first colum:
// 1. The current segment itself is an inter-segment whitespace;
// 2. If our ruby segment is split across multiple lines, and some
// intra-level whitespace happens to fall right after a line-break.
// Each line will get its own nsRubyBaseContainerFrame, and the
// container right after the line-break will end up with its first
// column containing that intra-level whitespace.
for (uint32_t i = 0, iend = mFrames.Length(); i < iend; i++) {
nsRubyContentFrame* frame = mFrames[i];
if (frame && frame->IsIntraLevelWhitespace()) {
mAtIntraLevelWhitespace = true;
break;
}
}
}
void
RubyColumnEnumerator::Next()
{
bool advancingToIntraLevelWhitespace = false;
for (uint32_t i = 0, iend = mFrames.Length(); i < iend; i++) {
nsRubyContentFrame* frame = mFrames[i];
// If we've got intra-level whitespace frames at some levels in the
// current ruby column, we "faked" an anonymous box for all other
// levels for this column. So when we advance off this column, we
// don't advance any of the frames in those levels, because we're
// just advancing across the "fake" frames.
if (frame && (!mAtIntraLevelWhitespace ||
frame->IsIntraLevelWhitespace())) {
nsIFrame* nextSibling = frame->GetNextSibling();
MOZ_ASSERT(!nextSibling || nextSibling->GetType() == frame->GetType(),
"Frame type should be identical among a level");
mFrames[i] = frame = static_cast<nsRubyContentFrame*>(nextSibling);
if (!advancingToIntraLevelWhitespace &&
frame && frame->IsIntraLevelWhitespace()) {
advancingToIntraLevelWhitespace = true;
}
}
}
MOZ_ASSERT(!advancingToIntraLevelWhitespace || !mAtIntraLevelWhitespace,
"Should never have adjacent intra-level whitespace columns");
mAtIntraLevelWhitespace = advancingToIntraLevelWhitespace;
}
bool
RubyColumnEnumerator::AtEnd() const
{
for (uint32_t i = 0, iend = mFrames.Length(); i < iend; i++) {
if (mFrames[i]) {
return false;
}
}
return true;
}
nsRubyContentFrame*
RubyColumnEnumerator::GetFrameAtLevel(uint32_t aIndex) const
{
// If the current ruby column is for intra-level whitespaces, we
// return nullptr for any levels that do not have an actual intra-
// level whitespace frame in this column. This nullptr represents
// an anonymous empty intra-level whitespace box. (In this case,
// it's important that we NOT return mFrames[aIndex], because it's
// really part of the next column, not the current one.)
nsRubyContentFrame* frame = mFrames[aIndex];
return !mAtIntraLevelWhitespace ||
(frame && frame->IsIntraLevelWhitespace()) ? frame : nullptr;
}
void
RubyColumnEnumerator::GetColumn(RubyColumn& aColumn) const
{
nsRubyContentFrame* rbFrame = GetFrameAtLevel(0);
MOZ_ASSERT(!rbFrame || rbFrame->GetType() == nsGkAtoms::rubyBaseFrame);
aColumn.mBaseFrame = static_cast<nsRubyBaseFrame*>(rbFrame);
aColumn.mTextFrames.ClearAndRetainStorage();
for (uint32_t i = 1, iend = mFrames.Length(); i < iend; i++) {
nsRubyContentFrame* rtFrame = GetFrameAtLevel(i);
MOZ_ASSERT(!rtFrame || rtFrame->GetType() == nsGkAtoms::rubyTextFrame);
aColumn.mTextFrames.AppendElement(static_cast<nsRubyTextFrame*>(rtFrame));
}
aColumn.mIsIntraLevelWhitespace = mAtIntraLevelWhitespace;
}
|
