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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_length_utils.h" | 5 #include "core/layout/ng/ng_length_utils.h" |
| 6 | 6 |
| 7 #include "core/layout/ng/ng_constraint_space.h" | 7 #include "core/layout/ng/ng_constraint_space.h" |
| 8 #include "core/layout/ng/ng_constraint_space_builder.h" | 8 #include "core/layout/ng/ng_constraint_space_builder.h" |
| 9 #include "core/layout/ng/ng_fragment_base.h" | |
| 10 #include "core/style/ComputedStyle.h" | 9 #include "core/style/ComputedStyle.h" |
| 10 #include "core/layout/ng/ng_fragment.h" |
| 11 #include "platform/LayoutUnit.h" | 11 #include "platform/LayoutUnit.h" |
| 12 #include "platform/Length.h" | 12 #include "platform/Length.h" |
| 13 #include "wtf/Optional.h" | 13 #include "wtf/Optional.h" |
| 14 | 14 |
| 15 namespace blink { | 15 namespace blink { |
| 16 // TODO(layout-ng): | 16 // TODO(layout-ng): |
| 17 // - positioned and/or replaced calculations | 17 // - positioned and/or replaced calculations |
| 18 // - Take scrollbars into account | 18 // - Take scrollbars into account |
| 19 | 19 |
| 20 bool NeedMinAndMaxContentSizes(const NGConstraintSpace& constraint_space, | 20 bool NeedMinAndMaxContentSizes(const NGConstraintSpace& constraint_space, |
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| 383 constraint_space, style, empty_sizes, style.paddingBefore(), | 383 constraint_space, style, empty_sizes, style.paddingBefore(), |
| 384 LengthResolveType::kMarginBorderPaddingSize); | 384 LengthResolveType::kMarginBorderPaddingSize); |
| 385 padding.block_end = ResolveInlineLength( | 385 padding.block_end = ResolveInlineLength( |
| 386 constraint_space, style, empty_sizes, style.paddingAfter(), | 386 constraint_space, style, empty_sizes, style.paddingAfter(), |
| 387 LengthResolveType::kMarginBorderPaddingSize); | 387 LengthResolveType::kMarginBorderPaddingSize); |
| 388 return padding; | 388 return padding; |
| 389 } | 389 } |
| 390 | 390 |
| 391 void ApplyAutoMargins(const NGConstraintSpace& constraint_space, | 391 void ApplyAutoMargins(const NGConstraintSpace& constraint_space, |
| 392 const ComputedStyle& style, | 392 const ComputedStyle& style, |
| 393 const NGFragmentBase& fragment, | 393 const NGFragment& fragment, |
| 394 NGBoxStrut* margins) { | 394 NGBoxStrut* margins) { |
| 395 DCHECK(margins) << "Margins cannot be NULL here"; | 395 DCHECK(margins) << "Margins cannot be NULL here"; |
| 396 const LayoutUnit used_space = fragment.InlineSize() + margins->InlineSum(); | 396 const LayoutUnit used_space = fragment.InlineSize() + margins->InlineSum(); |
| 397 const LayoutUnit available_space = | 397 const LayoutUnit available_space = |
| 398 constraint_space.AvailableSize().inline_size - used_space; | 398 constraint_space.AvailableSize().inline_size - used_space; |
| 399 if (available_space < LayoutUnit()) | 399 if (available_space < LayoutUnit()) |
| 400 return; | 400 return; |
| 401 if (style.marginStart().isAuto() && style.marginEnd().isAuto()) { | 401 if (style.marginStart().isAuto() && style.marginEnd().isAuto()) { |
| 402 margins->inline_start = available_space / 2; | 402 margins->inline_start = available_space / 2; |
| 403 margins->inline_end = available_space - margins->inline_start; | 403 margins->inline_end = available_space - margins->inline_start; |
| 404 } else if (style.marginStart().isAuto()) { | 404 } else if (style.marginStart().isAuto()) { |
| 405 margins->inline_start = available_space; | 405 margins->inline_start = available_space; |
| 406 } else if (style.marginEnd().isAuto()) { | 406 } else if (style.marginEnd().isAuto()) { |
| 407 margins->inline_end = available_space; | 407 margins->inline_end = available_space; |
| 408 } | 408 } |
| 409 } | 409 } |
| 410 | 410 |
| 411 } // namespace blink | 411 } // namespace blink |
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