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style: Add Gecko-only support for writing-mode:sideways-{lr,rl}.

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Fixes #15213.
This commit is contained in:
Cameron McCormack 2017-04-15 20:10:24 +10:00
parent 10f2d3c38e
commit b73916a135
3 changed files with 36 additions and 11 deletions
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33
components/style/properties/properties.mako.rs
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@ -1936,16 +1936,33 @@ pub fn get_writing_mode(inheritedbox_style: &style_structs::InheritedBox) -> Wri
flags.insert(logical_geometry::FLAG_VERTICAL);
flags.insert(logical_geometry::FLAG_VERTICAL_LR);
},
}
% if product == "gecko":
match inheritedbox_style.clone_text_orientation() {
computed_values::text_orientation::T::mixed => {},
computed_values::text_orientation::T::upright => {
flags.insert(logical_geometry::FLAG_UPRIGHT);
},
computed_values::text_orientation::T::sideways => {
% if product == "gecko":
computed_values::writing_mode::T::sideways_rl => {
flags.insert(logical_geometry::FLAG_VERTICAL);
flags.insert(logical_geometry::FLAG_SIDEWAYS);
},
computed_values::writing_mode::T::sideways_lr => {
flags.insert(logical_geometry::FLAG_VERTICAL);
flags.insert(logical_geometry::FLAG_VERTICAL_LR);
flags.insert(logical_geometry::FLAG_LINE_INVERTED);
flags.insert(logical_geometry::FLAG_SIDEWAYS);
},
% endif
}
% if product == "gecko":
// If FLAG_SIDEWAYS is already set, this means writing-mode is either
// sideways-rl or sideways-lr, and for both of these values,
// text-orientation has no effect.
if !flags.intersects(logical_geometry::FLAG_SIDEWAYS) {
match inheritedbox_style.clone_text_orientation() {
computed_values::text_orientation::T::mixed => {},
computed_values::text_orientation::T::upright => {
flags.insert(logical_geometry::FLAG_UPRIGHT);
},
computed_values::text_orientation::T::sideways => {
flags.insert(logical_geometry::FLAG_SIDEWAYS);
},
}
}
% endif
flags