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Set multiple properties in a keyframe correctly.

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This commit is contained in:
Hiroyuki Ikezoe 2017-05-02 18:02:10 +09:00
parent f1ae547b9f
commit 7ef036d120
1 changed files with 7 additions and 5 deletions
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12
ports/geckolib/glue.rs
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@ -2019,6 +2019,7 @@ pub extern "C" fn Servo_GetComputedKeyframeValues(keyframes: RawGeckoKeyframeLis
// mServoDeclarationBlock is null in the case where we have an invalid css property.
let iter = keyframe.mPropertyValues.iter()
.filter(|&property| !property.mServoDeclarationBlock.mRawPtr.is_null());
let mut property_index = 0;
for property in iter {
let declarations = unsafe { &*property.mServoDeclarationBlock.mRawPtr.clone() };
let declarations = Locked::<PropertyDeclarationBlock>::as_arc(&declarations);
@ -2045,17 +2046,18 @@ pub extern "C" fn Servo_GetComputedKeyframeValues(keyframes: RawGeckoKeyframeLis
}
});
for (i, anim) in anim_iter.enumerate() {
for anim in anim_iter {
if !seen.has_transition_property_bit(&anim.0) {
// This is safe since we immediately write to the uninitialized values.
unsafe { animation_values.set_len((i + 1) as u32) };
unsafe { animation_values.set_len((property_index + 1) as u32) };
seen.set_transition_property_bit(&anim.0);
animation_values[i].mProperty = (&anim.0).into();
animation_values[property_index].mProperty = (&anim.0).into();
// We only make sure we have enough space for this variable,
// but didn't construct a default value for StyleAnimationValue,
// so we should zero it to avoid getting undefined behaviors.
animation_values[i].mValue.mGecko = unsafe { mem::zeroed() };
animation_values[i].mValue.mServo.set_arc_leaky(Arc::new(anim.1));
animation_values[property_index].mValue.mGecko = unsafe { mem::zeroed() };
animation_values[property_index].mValue.mServo.set_arc_leaky(Arc::new(anim.1));
property_index += 1;
}
}
}