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Implement Servo_GetComputedKeyframeValues.

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This commit is contained in:
Hiroyuki Ikezoe 2017-02-23 10:36:05 +09:00
parent b45e3f1011
commit f94ee515a3
1 changed files with 72 additions and 1 deletions
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73
ports/geckolib/glue.rs
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@ -32,6 +32,7 @@ use style::gecko::traversal::RecalcStyleOnly;
use style::gecko::wrapper::DUMMY_BASE_URL;
use style::gecko::wrapper::GeckoElement;
use style::gecko_bindings::bindings;
use style::gecko_bindings::bindings::{RawGeckoKeyframeListBorrowed, RawGeckoKeyframeListBorrowedMut};
use style::gecko_bindings::bindings::{RawServoDeclarationBlockBorrowed, RawServoDeclarationBlockStrong};
use style::gecko_bindings::bindings::{RawServoStyleRuleBorrowed, RawServoStyleRuleStrong};
use style::gecko_bindings::bindings::{RawServoStyleSetBorrowed, RawServoStyleSetOwned};
@ -41,8 +42,8 @@ use style::gecko_bindings::bindings::{ServoCssRulesBorrowed, ServoCssRulesStrong
use style::gecko_bindings::bindings::{nsACString, nsAString};
use style::gecko_bindings::bindings::Gecko_AnimationAppendKeyframe;
use style::gecko_bindings::bindings::RawGeckoAnimationValueListBorrowedMut;
use style::gecko_bindings::bindings::RawGeckoComputedKeyframeValuesListBorrowedMut;
use style::gecko_bindings::bindings::RawGeckoElementBorrowed;
use style::gecko_bindings::bindings::RawGeckoKeyframeListBorrowedMut;
use style::gecko_bindings::bindings::RawGeckoPresContextBorrowed;
use style::gecko_bindings::bindings::RawServoAnimationValueBorrowed;
use style::gecko_bindings::bindings::RawServoAnimationValueStrong;
@ -1387,6 +1388,76 @@ pub extern "C" fn Servo_ResolveStyleLazily(element: RawGeckoElementBorrowed,
result.unwrap().into_strong()
}
#[no_mangle]
pub extern "C" fn Servo_GetComputedKeyframeValues(keyframes: RawGeckoKeyframeListBorrowed,
style: ServoComputedValuesBorrowed,
parent_style: ServoComputedValuesBorrowedOrNull,
pres_context: RawGeckoPresContextBorrowed,
computed_keyframes: RawGeckoComputedKeyframeValuesListBorrowedMut)
{
use style::properties::declaration_block::Importance;
use style::properties::property_bit_field::PropertyBitField;
use style::values::computed::Context;
let style = ComputedValues::as_arc(&style);
let parent_style = parent_style.as_ref().map(|r| &**ComputedValues::as_arc(&r));
let init = ComputedValues::default_values(pres_context);
let context = Context {
is_root_element: false,
// FIXME (bug 1303229): Use the actual viewport size here
viewport_size: Size2D::new(Au(0), Au(0)),
inherited_style: parent_style.unwrap_or(&init),
style: (**style).clone(),
font_metrics_provider: None,
};
for (index, keyframe) in keyframes.iter().enumerate() {
let ref mut animation_values = computed_keyframes[index];
let mut seen = PropertyBitField::new();
// 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());
for property in iter {
let declarations = unsafe { &*property.mServoDeclarationBlock.mRawPtr.clone() };
let declarations = RwLock::<PropertyDeclarationBlock>::as_arc(&declarations);
let guard = declarations.read();
let anim_iter = guard.declarations
.iter()
.filter_map(|&(ref decl, imp)| {
if imp == Importance::Normal {
let property = TransitionProperty::from_declaration(decl);
let animation = AnimationValue::from_declaration(decl, &context, &init);
debug_assert!(property.is_none() == animation.is_none(),
"The failure condition of TransitionProperty::from_declaration \
and AnimationValue::from_declaration should be the same");
// Skip the property if either ::from_declaration fails.
if property.is_none() || animation.is_none() {
None
} else {
Some((property.unwrap(), animation.unwrap()))
}
} else {
None
}
});
for (i, anim) in anim_iter.enumerate() {
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) };
seen.set_transition_property_bit(&anim.0);
animation_values[i].mProperty = anim.0.into();
animation_values[i].mValue.mServo.set_arc_leaky(Arc::new(anim.1));
}
}
}
}
}
#[no_mangle]
pub extern "C" fn Servo_AssertTreeIsClean(root: RawGeckoElementBorrowed) {