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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_absolute_utils.h" | 5 #include "core/layout/ng/ng_absolute_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_length_utils.h" | 8 #include "core/layout/ng/ng_length_utils.h" |
9 #include "core/style/ComputedStyle.h" | 9 #include "core/style/ComputedStyle.h" |
10 #include "platform/LengthFunctions.h" | 10 #include "platform/LengthFunctions.h" |
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372 return AbsoluteHorizontalNeedsEstimate(style); | 372 return AbsoluteHorizontalNeedsEstimate(style); |
373 } | 373 } |
374 | 374 |
375 bool AbsoluteNeedsChildInlineSize(const ComputedStyle& style) { | 375 bool AbsoluteNeedsChildInlineSize(const ComputedStyle& style) { |
376 if (style.isHorizontalWritingMode()) | 376 if (style.isHorizontalWritingMode()) |
377 return AbsoluteHorizontalNeedsEstimate(style); | 377 return AbsoluteHorizontalNeedsEstimate(style); |
378 else | 378 else |
379 return AbsoluteVerticalNeedsEstimate(style); | 379 return AbsoluteVerticalNeedsEstimate(style); |
380 } | 380 } |
381 | 381 |
382 bool IsContainingBlockForAbsoluteChild(const ComputedStyle& container_style, | |
383 const ComputedStyle& child_style) { | |
384 EPosition position = child_style.position(); | |
385 bool contains_fixed = container_style.canContainFixedPositionObjects(); | |
386 bool contains_absolute = | |
387 container_style.canContainAbsolutePositionObjects() || contains_fixed; | |
388 | |
389 return (contains_absolute && position == AbsolutePosition) || | |
390 (contains_fixed && position == FixedPosition); | |
391 } | |
392 | |
393 NGAbsolutePhysicalPosition ComputePartialAbsoluteWithChildInlineSize( | 382 NGAbsolutePhysicalPosition ComputePartialAbsoluteWithChildInlineSize( |
394 const NGConstraintSpace& space, | 383 const NGConstraintSpace& space, |
395 const ComputedStyle& style, | 384 const ComputedStyle& style, |
396 const NGStaticPosition& static_position, | 385 const NGStaticPosition& static_position, |
397 const Optional<MinAndMaxContentSizes>& child_minmax) { | 386 const Optional<MinAndMaxContentSizes>& child_minmax) { |
398 NGAbsolutePhysicalPosition position; | 387 NGAbsolutePhysicalPosition position; |
399 if (style.isHorizontalWritingMode()) { | 388 if (style.isHorizontalWritingMode()) { |
400 Optional<LayoutUnit> width; | 389 Optional<LayoutUnit> width; |
401 if (!style.width().isAuto()) { | 390 if (!style.width().isAuto()) { |
402 width = ResolveWidth(style.width(), space, style, child_minmax, | 391 width = ResolveWidth(style.width(), space, style, child_minmax, |
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443 if (!style.width().isAuto()) { | 432 if (!style.width().isAuto()) { |
444 width = ResolveWidth(style.width(), space, style, child_minmax, | 433 width = ResolveWidth(style.width(), space, style, child_minmax, |
445 LengthResolveType::kContentSize); | 434 LengthResolveType::kContentSize); |
446 } | 435 } |
447 ComputeAbsoluteHorizontal(space, style, width, static_position, | 436 ComputeAbsoluteHorizontal(space, style, width, static_position, |
448 child_minmax, position); | 437 child_minmax, position); |
449 } | 438 } |
450 } | 439 } |
451 | 440 |
452 } // namespace blink | 441 } // namespace blink |
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