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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "core/layout/ng/ng_block_node.h" | 5 #include "core/layout/ng/ng_block_node.h" |
6 | 6 |
7 #include "core/layout/LayoutBlockFlow.h" | 7 #include "core/layout/LayoutBlockFlow.h" |
8 #include "core/layout/api/LineLayoutAPIShim.h" | 8 #include "core/layout/api/LineLayoutAPIShim.h" |
9 #include "core/layout/line/InlineIterator.h" | 9 #include "core/layout/line/InlineIterator.h" |
10 #include "core/layout/ng/layout_ng_block_flow.h" | 10 #include "core/layout/ng/layout_ng_block_flow.h" |
| 11 #include "core/layout/ng/ng_block_break_token.h" |
11 #include "core/layout/ng/ng_block_layout_algorithm.h" | 12 #include "core/layout/ng/ng_block_layout_algorithm.h" |
12 #include "core/layout/ng/ng_box_fragment.h" | 13 #include "core/layout/ng/ng_box_fragment.h" |
13 #include "core/layout/ng/ng_constraint_space.h" | 14 #include "core/layout/ng/ng_constraint_space.h" |
14 #include "core/layout/ng/ng_constraint_space_builder.h" | 15 #include "core/layout/ng/ng_constraint_space_builder.h" |
15 #include "core/layout/ng/ng_fragment_builder.h" | 16 #include "core/layout/ng/ng_fragment_builder.h" |
16 #include "core/layout/ng/ng_inline_node.h" | 17 #include "core/layout/ng/ng_inline_node.h" |
17 #include "core/layout/ng/ng_layout_result.h" | 18 #include "core/layout/ng/ng_layout_result.h" |
18 #include "core/layout/ng/ng_length_utils.h" | 19 #include "core/layout/ng/ng_length_utils.h" |
19 #include "core/layout/ng/ng_writing_mode.h" | 20 #include "core/layout/ng/ng_writing_mode.h" |
20 #include "core/paint/PaintLayer.h" | 21 #include "core/paint/PaintLayer.h" |
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79 layout_box_(nullptr), | 80 layout_box_(nullptr), |
80 style_(style) { | 81 style_(style) { |
81 DCHECK(style_); | 82 DCHECK(style_); |
82 } | 83 } |
83 | 84 |
84 // Need an explicit destructor in the .cc file, or the MSWIN compiler will | 85 // Need an explicit destructor in the .cc file, or the MSWIN compiler will |
85 // produce an error when attempting to generate a default one, if the .h file is | 86 // produce an error when attempting to generate a default one, if the .h file is |
86 // included from a compilation unit that lacks the ComputedStyle definition. | 87 // included from a compilation unit that lacks the ComputedStyle definition. |
87 NGBlockNode::~NGBlockNode() {} | 88 NGBlockNode::~NGBlockNode() {} |
88 | 89 |
89 RefPtr<NGLayoutResult> NGBlockNode::Layout( | 90 RefPtr<NGLayoutResult> NGBlockNode::Layout(NGConstraintSpace* constraint_space, |
90 NGConstraintSpace* constraint_space) { | 91 NGBreakToken* break_token) { |
91 // Use the old layout code and synthesize a fragment. | 92 // Use the old layout code and synthesize a fragment. |
92 if (!CanUseNewLayout()) { | 93 if (!CanUseNewLayout()) { |
93 DCHECK(layout_box_); | 94 DCHECK(layout_box_); |
94 layout_result_ = RunOldLayout(*constraint_space); | 95 layout_result_ = RunOldLayout(*constraint_space); |
95 return layout_result_; | 96 return layout_result_; |
96 } | 97 } |
97 | 98 |
98 layout_result_ = | 99 layout_result_ = NGBlockLayoutAlgorithm(this, constraint_space, |
99 NGBlockLayoutAlgorithm(this, constraint_space, CurrentBreakToken()) | 100 toNGBlockBreakToken(break_token)) |
100 .Layout(); | 101 .Layout(); |
101 | 102 |
102 CopyFragmentDataToLayoutBox(*constraint_space); | 103 CopyFragmentDataToLayoutBox(*constraint_space); |
103 return layout_result_; | 104 return layout_result_; |
104 } | 105 } |
105 | 106 |
106 MinAndMaxContentSizes NGBlockNode::ComputeMinAndMaxContentSizes() { | 107 MinAndMaxContentSizes NGBlockNode::ComputeMinAndMaxContentSizes() { |
107 MinAndMaxContentSizes sizes; | 108 MinAndMaxContentSizes sizes; |
108 if (!CanUseNewLayout()) { | 109 if (!CanUseNewLayout()) { |
109 DCHECK(layout_box_); | 110 DCHECK(layout_box_); |
110 // TODO(layout-ng): This could be somewhat optimized by directly calling | 111 // TODO(layout-ng): This could be somewhat optimized by directly calling |
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200 } | 201 } |
201 | 202 |
202 void NGBlockNode::SetNextSibling(NGLayoutInputNode* sibling) { | 203 void NGBlockNode::SetNextSibling(NGLayoutInputNode* sibling) { |
203 next_sibling_ = sibling; | 204 next_sibling_ = sibling; |
204 } | 205 } |
205 | 206 |
206 void NGBlockNode::SetFirstChild(NGLayoutInputNode* child) { | 207 void NGBlockNode::SetFirstChild(NGLayoutInputNode* child) { |
207 first_child_ = child; | 208 first_child_ = child; |
208 } | 209 } |
209 | 210 |
210 NGBreakToken* NGBlockNode::CurrentBreakToken() const { | |
211 return layout_result_ ? layout_result_->PhysicalFragment()->BreakToken() | |
212 : nullptr; | |
213 } | |
214 | |
215 DEFINE_TRACE(NGBlockNode) { | 211 DEFINE_TRACE(NGBlockNode) { |
216 visitor->trace(next_sibling_); | 212 visitor->trace(next_sibling_); |
217 visitor->trace(first_child_); | 213 visitor->trace(first_child_); |
218 NGLayoutInputNode::trace(visitor); | 214 NGLayoutInputNode::trace(visitor); |
219 } | 215 } |
220 | 216 |
221 bool NGBlockNode::CanUseNewLayout() { | 217 bool NGBlockNode::CanUseNewLayout() { |
222 if (!layout_box_) | 218 if (!layout_box_) |
223 return true; | 219 return true; |
224 if (!layout_box_->isLayoutBlockFlow()) | 220 if (!layout_box_->isLayoutBlockFlow()) |
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248 const NGConstraintSpace& constraint_space) { | 244 const NGConstraintSpace& constraint_space) { |
249 // We may not have a layout_box_ during unit tests. | 245 // We may not have a layout_box_ during unit tests. |
250 if (!layout_box_) | 246 if (!layout_box_) |
251 return; | 247 return; |
252 | 248 |
253 NGPhysicalBoxFragment* fragment = | 249 NGPhysicalBoxFragment* fragment = |
254 toNGPhysicalBoxFragment(layout_result_->PhysicalFragment().get()); | 250 toNGPhysicalBoxFragment(layout_result_->PhysicalFragment().get()); |
255 | 251 |
256 layout_box_->setWidth(fragment->Width()); | 252 layout_box_->setWidth(fragment->Width()); |
257 layout_box_->setHeight(fragment->Height()); | 253 layout_box_->setHeight(fragment->Height()); |
258 NGBoxStrut border_and_padding = | 254 NGBoxStrut border_and_padding = ComputeBorders(constraint_space, Style()) + |
259 ComputeBorders(Style()) + ComputePadding(constraint_space, Style()); | 255 ComputePadding(constraint_space, Style()); |
260 LayoutUnit intrinsic_logical_height = | 256 LayoutUnit intrinsic_logical_height = |
261 layout_box_->style()->isHorizontalWritingMode() | 257 layout_box_->style()->isHorizontalWritingMode() |
262 ? fragment->HeightOverflow() | 258 ? fragment->HeightOverflow() |
263 : fragment->WidthOverflow(); | 259 : fragment->WidthOverflow(); |
264 intrinsic_logical_height -= border_and_padding.BlockSum(); | 260 intrinsic_logical_height -= border_and_padding.BlockSum(); |
265 layout_box_->setIntrinsicContentLogicalHeight(intrinsic_logical_height); | 261 layout_box_->setIntrinsicContentLogicalHeight(intrinsic_logical_height); |
266 | 262 |
267 // We may still have unpositioned floats when we reach the root box. | 263 // We may still have unpositioned floats when we reach the root box. |
268 if (!layout_box_->parent()) { | 264 if (!layout_box_->parent()) { |
269 for (const auto& floating_object : fragment->PositionedFloats()) { | 265 for (const auto& floating_object : fragment->PositionedFloats()) { |
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369 // Save static position for legacy AbsPos layout. | 365 // Save static position for legacy AbsPos layout. |
370 void NGBlockNode::SaveStaticOffsetForLegacy(const NGLogicalOffset& offset) { | 366 void NGBlockNode::SaveStaticOffsetForLegacy(const NGLogicalOffset& offset) { |
371 DCHECK(layout_box_); | 367 DCHECK(layout_box_); |
372 DCHECK(layout_box_->isOutOfFlowPositioned()); | 368 DCHECK(layout_box_->isOutOfFlowPositioned()); |
373 DCHECK(layout_box_->layer()); | 369 DCHECK(layout_box_->layer()); |
374 layout_box_->layer()->setStaticBlockPosition(offset.block_offset); | 370 layout_box_->layer()->setStaticBlockPosition(offset.block_offset); |
375 layout_box_->layer()->setStaticInlinePosition(offset.inline_offset); | 371 layout_box_->layer()->setStaticInlinePosition(offset.inline_offset); |
376 } | 372 } |
377 | 373 |
378 } // namespace blink | 374 } // namespace blink |
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