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Keep track of the containing block writing mode.

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This is necessary for correctly converting `relative_containing_block_size`
to physical coordinates.
This commit is contained in:
Matt Brubeck 2015-03-05 08:43:36 -08:00
parent 8221bfc3ef
commit cabbbcc978
5 changed files with 38 additions and 4 deletions
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4
components/layout/flow.rs
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@ -683,6 +683,9 @@ pub struct AbsolutePositionInfo {
/// The size of the containing block for relatively-positioned descendants.
pub relative_containing_block_size: LogicalSize<Au>,
/// The writing mode for `relative_containing_block_size`.
pub relative_containing_block_mode: WritingMode,
/// The position of the absolute containing block relative to the nearest ancestor stacking
/// context. If the absolute containing block establishes the stacking context for this flow,
/// and this flow is not itself absolutely-positioned, then this is (0, 0).
@ -700,6 +703,7 @@ impl AbsolutePositionInfo {
// of the root layer.
AbsolutePositionInfo {
relative_containing_block_size: LogicalSize::zero(writing_mode),
relative_containing_block_mode: writing_mode,
stacking_relative_position_of_absolute_containing_block: Point2D::zero(),
layers_needed_for_positioned_flows: false,
}