| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef NGSpaceUtils_h |
| #define NGSpaceUtils_h |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "base/optional.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/layout/ng/ng_layout_input_node.h" |
| #include "third_party/blink/renderer/platform/geometry/layout_unit.h" |
| |
| namespace blink { |
| |
| class ComputedStyle; |
| struct NGBfcOffset; |
| |
| // Adjusts {@code offset} to the clearance line. |
| CORE_EXPORT bool AdjustToClearance(LayoutUnit clearance_offset, |
| NGBfcOffset* offset); |
| |
| // Create a child constraint space with no sizing data, except for fallback |
| // inline sizing for orthongonal flow roots. This will not and can not be used |
| // for final layout, but is needed in an intermediate measure pass that |
| // calculates the min/max size contribution from a child that establishes an |
| // orthogonal flow root. |
| NGConstraintSpace CreateIndefiniteConstraintSpaceForChild( |
| const ComputedStyle& container_style, |
| NGLayoutInputNode child); |
| |
| // Calculate and set the available inline fallback size for orthogonal flow |
| // children. This size will be used if it's not resolvable via other means [1]. |
| // |
| // TODO(mstensho): The spec [1] says to use the size of the nearest scrollport |
| // as constraint, if that's smaller than the initial containing block, but we |
| // haven't implemented that yet; we always just use the initial containing |
| // block size. |
| // |
| // [1] https://www.w3.org/TR/css-writing-modes-3/#orthogonal-auto |
| void SetOrthogonalFallbackInlineSizeIfNeeded(const ComputedStyle& parent_style, |
| const NGLayoutInputNode child, |
| NGConstraintSpaceBuilder* builder); |
| |
| } // namespace blink |
| |
| #endif // NGSpaceUtils_h |
