Auto merge of #6903 - glennw:fix-height-again, r=pcwalton

Fix percentage height calculation, absolute containing block height calculations.

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.

<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/6903)
<!-- Reviewable:end -->
This commit is contained in:
bors-servo 2015-08-03 10:38:21 -06:00
commit 028707f5cd
10 changed files with 151 additions and 119 deletions

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)))));
}