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Auto merge of #16704 - BorisChiou:stylo/transition/compute_from_string, r=birtles

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stylo: Bug 1346052 - Add Servo_AnimationValue_Compute.

This is an interdependent patch of Bug 1346052. We need this FFI to compute the AnimationValue from a property id and a string, so nsDOMWindowUtils::ComputeAnimationDistance() can use this FFI to get the AnimationValue.

---
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix [Bug 1346052](https://bugzilla.mozilla.org/show_bug.cgi?id=1346052).
- [X] These changes do not require tests because we have some tests for this in Gecko.

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This commit is contained in:
bors-servo 2017-05-02 23:46:15 -05:00 • committed by GitHub
commit 1b9e1cc1f2
2 changed files with 53 additions and 4 deletions
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18
components/style/gecko_bindings/bindings.rs
View file

@ -1074,10 +1074,6 @@ extern "C" {
pub fn Gecko_CSSValue_GetAbsoluteLength(css_value: nsCSSValueBorrowed)
-> nscoord;
}
extern "C" {
pub fn Gecko_GetAppUnitsPerPhysicalInch(pres_context: RawGeckoPresContextBorrowed)
-> i32;
}
extern "C" {
pub fn Gecko_CSSValue_GetKeyword(aCSSValue: nsCSSValueBorrowed)
-> nsCSSKeyword;
@ -1172,6 +1168,11 @@ extern "C" {
font_size: nscoord, use_user_font_set: bool)
-> GeckoFontMetrics;
}
extern "C" {
pub fn Gecko_GetAppUnitsPerPhysicalInch(pres_context:
RawGeckoPresContextBorrowed)
-> i32;
}
extern "C" {
pub fn Gecko_GetMediaFeatures() -> *const nsMediaFeature;
}
@ -1855,6 +1856,15 @@ extern "C" {
RawServoAnimationValueBorrowed)
-> RawServoDeclarationBlockStrong;
}
extern "C" {
pub fn Servo_AnimationValue_Compute(declarations:
RawServoDeclarationBlockBorrowed,
style: ServoComputedValuesBorrowed,
parent_style:
ServoComputedValuesBorrowedOrNull,
raw_data: RawServoStyleSetBorrowed)
-> RawServoAnimationValueStrong;
}
extern "C" {
pub fn Servo_ParseStyleAttribute(data: *const nsACString,
extra_data: *mut RawGeckoURLExtraData)

39
ports/geckolib/glue.rs
View file

@ -2066,6 +2066,45 @@ pub extern "C" fn Servo_GetComputedKeyframeValues(keyframes: RawGeckoKeyframeLis
}
}
#[no_mangle]
pub extern "C" fn Servo_AnimationValue_Compute(declarations: RawServoDeclarationBlockBorrowed,
style: ServoComputedValuesBorrowed,
parent_style: ServoComputedValuesBorrowedOrNull,
raw_data: RawServoStyleSetBorrowed)
-> RawServoAnimationValueStrong {
use style::values::computed::Context;
let data = PerDocumentStyleData::from_ffi(raw_data).borrow();
let style = ComputedValues::as_arc(&style);
let parent_style = parent_style.as_ref().map(|r| &**ComputedValues::as_arc(&r));
let default_values = data.default_computed_values();
let metrics = get_metrics_provider_for_product();
let mut context = Context {
is_root_element: false,
device: &data.stylist.device,
inherited_style: parent_style.unwrap_or(default_values),
layout_parent_style: parent_style.unwrap_or(default_values),
style: StyleBuilder::for_derived_style(&style),
font_metrics_provider: &metrics,
cached_system_font: None,
in_media_query: false,
quirks_mode: QuirksMode::NoQuirks,
};
let global_style_data = &*GLOBAL_STYLE_DATA;
let guard = global_style_data.shared_lock.read();
let declarations = Locked::<PropertyDeclarationBlock>::as_arc(&declarations);
// We only compute the first element in declarations.
match declarations.read_with(&guard).declarations().first() {
Some(&(ref decl, imp)) if imp == Importance::Normal => {
let animation = AnimationValue::from_declaration(decl, &mut context, default_values);
animation.map_or(RawServoAnimationValueStrong::null(), |value| {
Arc::new(value).into_strong()
})
},
_ => RawServoAnimationValueStrong::null()
}
}
#[no_mangle]
pub extern "C" fn Servo_AssertTreeIsClean(root: RawGeckoElementBorrowed) {