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Include transform changes in list that cause incremental reflows.

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Also ensure that 3d translations get layers.

Fixes #8329.
This commit is contained in:
Glenn Watson 2015-11-17 16:53:33 +10:00
parent f17f89059a
commit f555e3861c
3 changed files with 40 additions and 29 deletions
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32
components/style/properties.mako.rs
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@ -6227,6 +6227,38 @@ impl ComputedValues {
effects.transform_style
}
pub fn transform_requires_layer(&self) -> bool {
// Check if the transform matrix is 2D or 3D
if let Some(ref transform_list) = self.get_effects().transform.0 {
for transform in transform_list {
match *transform {
computed_values::transform::ComputedOperation::Perspective(..) => {
return true;
}
computed_values::transform::ComputedOperation::Matrix(m) => {
// See http://dev.w3.org/csswg/css-transforms/#2d-matrix
if m.m31 != 0.0 || m.m32 != 0.0 ||
m.m13 != 0.0 || m.m23 != 0.0 ||
m.m43 != 0.0 || m.m14 != 0.0 ||
m.m24 != 0.0 || m.m34 != 0.0 ||
m.m33 != 1.0 || m.m44 != 1.0 {
return true;
}
}
computed_values::transform::ComputedOperation::Translate(_, _, z) => {
if z != Au(0) {
return true;
}
}
_ => {}
}
}
}
// Neither perspective nor transform present
false
}
% for style_struct in STYLE_STRUCTS:
#[inline]
pub fn get_${style_struct.name.lower()}