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style: Re-enable font metrics querying for ch and ex units in Stylo traversal.

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This commit is contained in:
Cameron McCormack 2017-05-04 16:20:55 +08:00
parent d9ac109db6
commit aa9bb07a93
1 changed files with 17 additions and 20 deletions
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37
components/style/gecko/wrapper.rs
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@ -22,7 +22,7 @@ use dom::{self, AnimationRules, DescendantsBit, LayoutIterator, NodeInfo, TEleme
use dom::{OpaqueNode, PresentationalHintsSynthetizer};
use element_state::ElementState;
use error_reporting::RustLogReporter;
use font_metrics::{FontMetricsProvider, FontMetricsQueryResult};
use font_metrics::{FontMetrics, FontMetricsProvider, FontMetricsQueryResult};
use gecko::global_style_data::GLOBAL_STYLE_DATA;
use gecko::selector_parser::{SelectorImpl, NonTSPseudoClass, PseudoElement};
use gecko::snapshot_helpers;
@ -476,25 +476,22 @@ impl FontMetricsProvider for GeckoFontMetricsProvider {
sizes.size_for_generic(font_family)
}
fn query(&self, _font: &Font, _font_size: Au, _wm: WritingMode,
_in_media_query: bool, _device: &Device) -> FontMetricsQueryResult {
// Disabled until we can make font metrics thread safe (bug 1356105)
//
// use gecko_bindings::bindings::Gecko_GetFontMetrics;
// let gecko_metrics = unsafe {
// Gecko_GetFontMetrics(&*device.pres_context,
// wm.is_vertical() && !wm.is_sideways(),
// font.gecko(),
// font_size.0,
// // we don't use the user font set in a media query
// !in_media_query)
// };
// let metrics = FontMetrics {
// x_height: Au(gecko_metrics.mXSize),
// zero_advance_measure: Au(gecko_metrics.mChSize),
// };
// FontMetricsQueryResult::Available(metrics)
FontMetricsQueryResult::NotAvailable
fn query(&self, font: &Font, font_size: Au, wm: WritingMode,
in_media_query: bool, device: &Device) -> FontMetricsQueryResult {
use gecko_bindings::bindings::Gecko_GetFontMetrics;
let gecko_metrics = unsafe {
Gecko_GetFontMetrics(&*device.pres_context,
wm.is_vertical() && !wm.is_sideways(),
font.gecko(),
font_size.0,
// we don't use the user font set in a media query
!in_media_query)
};
let metrics = FontMetrics {
x_height: Au(gecko_metrics.mXSize),
zero_advance_measure: Au(gecko_metrics.mChSize),
};
FontMetricsQueryResult::Available(metrics)
}
}