| // Copyright 2019 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. |
| |
| #include "third_party/blink/renderer/core/layout/ng/ng_block_layout_algorithm_utils.h" |
| |
| #include "third_party/blink/renderer/core/layout/ng/exclusions/ng_exclusion_space.h" |
| #include "third_party/blink/renderer/core/layout/ng/ng_length_utils.h" |
| |
| namespace blink { |
| |
| LayoutUnit CalculateOutOfFlowStaticInlineLevelOffset( |
| const ComputedStyle& container_style, |
| const NGBfcOffset& origin_bfc_offset, |
| const NGExclusionSpace& exclusion_space, |
| LayoutUnit child_available_inline_size) { |
| const TextDirection direction = container_style.Direction(); |
| |
| // Find a layout opportunity, where we would have placed a zero-sized line. |
| NGLayoutOpportunity opportunity = exclusion_space.FindLayoutOpportunity( |
| origin_bfc_offset, child_available_inline_size); |
| |
| LayoutUnit child_line_offset = IsLtr(direction) |
| ? opportunity.rect.LineStartOffset() |
| : opportunity.rect.LineEndOffset(); |
| |
| LayoutUnit relative_line_offset = |
| child_line_offset - origin_bfc_offset.line_offset; |
| |
| // Convert back to the logical coordinate system. As the conversion is on an |
| // OOF-positioned node, we pretent it has zero inline-size. |
| LayoutUnit inline_offset = |
| IsLtr(direction) ? relative_line_offset |
| : child_available_inline_size - relative_line_offset; |
| |
| // Adjust for text alignment, within the layout opportunity. |
| LayoutUnit line_offset = LineOffsetForTextAlign( |
| container_style.GetTextAlign(), direction, opportunity.rect.InlineSize()); |
| |
| if (IsLtr(direction)) |
| inline_offset += line_offset; |
| else |
| inline_offset += opportunity.rect.InlineSize() - line_offset; |
| |
| // Adjust for the text-indent. |
| inline_offset += MinimumValueForLength(container_style.TextIndent(), |
| child_available_inline_size); |
| |
| return inline_offset; |
| } |
| |
| } // namespace blink |
