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
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/layout/space_utils.h"
#include "third_party/blink/renderer/core/html/forms/html_button_element.h"
#include "third_party/blink/renderer/core/html/forms/html_input_element.h"
#include "third_party/blink/renderer/core/html/forms/html_select_element.h"
#include "third_party/blink/renderer/core/html/forms/html_text_area_element.h"
#include "third_party/blink/renderer/core/layout/box_fragment_builder.h"
#include "third_party/blink/renderer/core/layout/constraint_space.h"
#include "third_party/blink/renderer/core/layout/constraint_space_builder.h"
#include "third_party/blink/renderer/core/layout/geometry/bfc_offset.h"
#include "third_party/blink/renderer/core/layout/layout_box.h"
#include "third_party/blink/renderer/core/layout/length_utils.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
#include "third_party/blink/renderer/platform/text/writing_mode.h"
namespace blink {
bool AdjustToClearance(LayoutUnit clearance_offset, BfcOffset* offset) {
DCHECK(offset);
if (clearance_offset > offset->block_offset) {
offset->block_offset = clearance_offset;
return true;
}
return false;
}
void SetOrthogonalFallbackInlineSize(const ComputedStyle& parent_style,
const LayoutInputNode child,
ConstraintSpaceBuilder* builder) {
DCHECK(!IsParallelWritingMode(parent_style.GetWritingMode(),
child.Style().GetWritingMode()));
PhysicalSize orthogonal_children_containing_block_size =
child.InitialContainingBlockSize();
LayoutUnit fallback_size =
parent_style.IsHorizontalWritingMode()
? orthogonal_children_containing_block_size.height
: orthogonal_children_containing_block_size.width;
LayoutUnit size(LayoutUnit::Max());
if (parent_style.LogicalHeight().IsFixed()) {
// Note that during layout, fixed size will already be taken care of (and
// set in the constraint space), but when calculating intrinsic sizes of
// orthogonal children, that won't be the case.
size = LayoutUnit(parent_style.LogicalHeight().Pixels());
}
if (parent_style.LogicalMaxHeight().IsFixed()) {
size = std::min(size, LayoutUnit(parent_style.LogicalMaxHeight().Pixels()));
}
if (parent_style.LogicalMinHeight().IsFixed()) {
size = std::max(size, LayoutUnit(parent_style.LogicalMinHeight().Pixels()));
}
// Calculate the content-box size.
if (parent_style.BoxSizing() == EBoxSizing::kBorderBox) {
// We're unable to resolve percentages at this point, so make sure we're
// only dealing with fixed-size values.
if (!parent_style.PaddingBlockStart().IsFixed() ||
!parent_style.PaddingBlockEnd().IsFixed()) {
builder->SetOrthogonalFallbackInlineSize(fallback_size);
return;
}
LayoutUnit border_padding(parent_style.BorderBlockStartWidth() +
parent_style.BorderBlockEndWidth() +
parent_style.PaddingBlockStart().Pixels() +
parent_style.PaddingBlockEnd().Pixels());
size -= border_padding;
size = size.ClampNegativeToZero();
}
fallback_size = std::min(fallback_size, size);
builder->SetOrthogonalFallbackInlineSize(fallback_size);
}
bool ShouldBlockContainerChildStretchAutoInlineSize(const BlockNode& child) {
if (child.IsReplaced()) {
return false;
}
if (child.IsTable()) {
return false;
}
if (const auto* node = child.GetDOMNode()) {
if (IsA<HTMLButtonElement>(node) || IsA<HTMLInputElement>(node) ||
IsA<HTMLSelectElement>(node) || IsA<HTMLTextAreaElement>(node)) {
return false;
}
}
return true;
}
void SetTextBoxTrimOnChildSpaceBuilder(
const BoxFragmentBuilder& fragment_builder,
bool known_to_have_successive_content,
ConstraintSpaceBuilder* space_builder) {
space_builder->SetShouldTextBoxTrimNodeStart(
fragment_builder.ShouldTextBoxTrimNodeStart());
space_builder->SetShouldTextBoxTrimFragmentainerStart(
fragment_builder.ShouldTextBoxTrimFragmentainerStart());
space_builder->SetShouldTextBoxTrimFragmentainerEnd(
fragment_builder.ShouldTextBoxTrimFragmentainerEnd());
if (fragment_builder.ShouldTextBoxTrimEnd()) {
// Attempt to trim the end unless we know for sure that there's content to
// follow.
space_builder->SetShouldTextBoxTrimNodeEnd(
fragment_builder.ShouldTextBoxTrimNodeEnd() &&
!known_to_have_successive_content);
}
}
} // namespace blink
|
