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Fix the panic when transform is non-invertible

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Nazım Can Altınova 2017-02-02 04:42:44 +03:00
parent 3c8daca772
commit f362f6f93b
3 changed files with 44 additions and 1 deletions
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9
components/gfx/display_list/mod.rs
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@ -182,7 +182,14 @@ impl DisplayList {
*client_point
} else {
let point = *translated_point - stacking_context.bounds.origin;
let inv_transform = stacking_context.transform.inverse().unwrap();
let inv_transform = match stacking_context.transform.inverse() {
Some(transform) => transform,
None => {
// If a transform function causes the current transformation matrix of an object
// to be non-invertible, the object and its content do not get displayed.
return;
}
};
let frac_point = inv_transform.transform_point(&Point2D::new(point.x.to_f32_px(),
point.y.to_f32_px()));
Point2D::new(Au::from_f32_px(frac_point.x), Au::from_f32_px(frac_point.y))