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style: Add an FFI function to see if an element is display: contents.

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Bug: 1303605
Reviewed-by: bz
This commit is contained in:
Emilio Cobos Álvarez 2018-03-29 03:49:26 +02:00
parent ecf71d77cd
commit c3185eab01
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GPG key ID: 056B727BB9C1027C
1 changed files with 22 additions and 5 deletions
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27
ports/geckolib/glue.rs
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@ -1043,17 +1043,34 @@ pub extern "C" fn Servo_Element_GetPseudoComputedValues(
}
#[no_mangle]
pub extern "C" fn Servo_Element_IsDisplayNone(element: RawGeckoElementBorrowed) -> bool {
pub extern "C" fn Servo_Element_IsDisplayNone(
element: RawGeckoElementBorrowed,
) -> bool {
let element = GeckoElement(element);
let data = element.get_data().expect("Invoking Servo_Element_IsDisplayNone on unstyled element");
let data = element.get_data()
.expect("Invoking Servo_Element_IsDisplayNone on unstyled element");
// This function is hot, so we bypass the AtomicRefCell. It would be nice to also assert that
// we're not in the servo traversal, but this function is called at various intermediate
// checkpoints when managing the traversal on the Gecko side.
// This function is hot, so we bypass the AtomicRefCell.
//
// It would be nice to also assert that we're not in the servo traversal,
// but this function is called at various intermediate checkpoints when
// managing the traversal on the Gecko side.
debug_assert!(is_main_thread());
unsafe { &*data.as_ptr() }.styles.is_display_none()
}
#[no_mangle]
pub extern "C" fn Servo_Element_IsDisplayContents(
element: RawGeckoElementBorrowed,
) -> bool {
let element = GeckoElement(element);
let data = element.get_data()
.expect("Invoking Servo_Element_IsDisplayContents on unstyled element");
debug_assert!(is_main_thread());
unsafe { &*data.as_ptr() }.styles.primary().get_box().clone_display().is_contents()
}
#[no_mangle]
pub extern "C" fn Servo_Element_IsPrimaryStyleReusedViaRuleNode(element: RawGeckoElementBorrowed) -> bool {
let element = GeckoElement(element);