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Fix percentage height calculation, absolute containing block height calculations.

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It's not possible to correctly determine during the css cascade whether the container height
is explicitly specified. Additionally, the spec https://drafts.csswg.org/css2/visudet.html#the-height-property
says this should affect the *used* height, rather than the computed height.

This significantly improves the layout in #6643.
This commit is contained in:
Glenn Watson 2015-08-03 09:00:46 +10:00
parent ffe4bd25a4
commit b9fea3deb3
10 changed files with 151 additions and 119 deletions
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15
components/script/dom/element.rs
View file

@ -390,15 +390,15 @@ impl RawLayoutElementHelpers for Element {
match height {
LengthOrPercentageOrAuto::Auto => {}
LengthOrPercentageOrAuto::Percentage(percentage) => {
let width_value = specified::LengthOrPercentageOrAuto::Percentage(percentage);
hints.push(from_declaration(PropertyDeclaration::Height(SpecifiedValue(
height::SpecifiedValue(width_value)))));
let height_value = specified::LengthOrPercentageOrAuto::Percentage(percentage);
hints.push(from_declaration(
PropertyDeclaration::Height(SpecifiedValue(height_value))));
}
LengthOrPercentageOrAuto::Length(length) => {
let width_value = specified::LengthOrPercentageOrAuto::Length(
let height_value = specified::LengthOrPercentageOrAuto::Length(
specified::Length::Absolute(length));
hints.push(from_declaration(PropertyDeclaration::Height(SpecifiedValue(
height::SpecifiedValue(width_value)))));
hints.push(from_declaration(
PropertyDeclaration::Height(SpecifiedValue(height_value))));
}
}
@ -443,8 +443,7 @@ impl RawLayoutElementHelpers for Element {
let value = specified::Length::FontRelative(specified::FontRelativeLength::Em(rows as CSSFloat));
hints.push(from_declaration(
PropertyDeclaration::Height(SpecifiedValue(
longhands::height::SpecifiedValue(
specified::LengthOrPercentageOrAuto::Length(value))))));
specified::LengthOrPercentageOrAuto::Length(value)))));
}