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Consistent resolution of cyclic percentages in min sizing properties (#33988)
The spec says that cyclic percentages in min sizing properties should be resolved against zero when computing intrinsic contributions. We were already doing that in the inline axis, but we were treating the entire expression as `auto` in the block axis. With this patch we will follow the spec in both axes. But note that browsers don't follo the spec in either axis, so we may have to revisit (see https://github.com/w3c/csswg-drafts/issues/10969). calc-min-height-block-1.html now fails because it tests what browsers do instead of what the spec says. Signed-off-by: Oriol Brufau <obrufau@igalia.com>
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5 changed files with 125 additions and 43 deletions
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@ -67,6 +67,29 @@ impl<T: Default> Default for LogicalVec2<T> {
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}
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}
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impl<T> LogicalVec2<T> {
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pub fn map_inline_and_block_axes<U>(
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&self,
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inline_f: impl FnOnce(&T) -> U,
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block_f: impl FnOnce(&T) -> U,
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) -> LogicalVec2<U> {
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LogicalVec2 {
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inline: inline_f(&self.inline),
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block: block_f(&self.block),
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}
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}
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}
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impl<T: Clone> LogicalVec2<Size<T>> {
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pub fn map_inline_and_block_sizes<U>(
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&self,
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inline_f: impl FnOnce(T) -> U,
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block_f: impl FnOnce(T) -> U,
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) -> LogicalVec2<Size<U>> {
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self.map_inline_and_block_axes(|size| size.map(inline_f), |size| size.map(block_f))
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}
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}
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impl<T: Clone> LogicalVec2<T> {
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pub fn from_physical_size(physical_size: &PhysicalSize<T>, mode: WritingMode) -> Self {
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// https://drafts.csswg.org/css-writing-modes/#logical-to-physical
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@ -734,15 +757,14 @@ impl LogicalVec2<Size<LengthPercentage>> {
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&self,
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containing_block: &ContainingBlock,
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) -> LogicalVec2<Size<Au>> {
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LogicalVec2 {
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inline: self
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.inline
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.map(|lp| lp.to_used_value(containing_block.inline_size)),
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block: self
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.block
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.maybe_map(|lp| lp.maybe_to_used_value(containing_block.block_size.non_auto()))
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.unwrap_or_default(),
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}
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self.map_inline_and_block_axes(
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|inline_size| inline_size.map(|lp| lp.to_used_value(containing_block.inline_size)),
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|block_size| {
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block_size
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.maybe_map(|lp| lp.maybe_to_used_value(containing_block.block_size.non_auto()))
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.unwrap_or_default()
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},
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)
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}
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pub(crate) fn maybe_percentages_relative_to_basis(
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