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style: Introduce SourceSizeList.

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MozReview-Commit-ID: 9QMF45VcBFB
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Emilio Cobos Álvarez 2017-11-06 13:47:46 +01:00
parent 001c50bcca
commit 3fa75bbdf6
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GPG key ID: 056B727BB9C1027C
5 changed files with 131 additions and 54 deletions
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36
components/style/servo/media_queries.rs
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@ -8,14 +8,11 @@ use app_units::Au;
use context::QuirksMode;
use cssparser::{Parser, RGBA};
use euclid::{ScaleFactor, Size2D, TypedSize2D};
use font_metrics::ServoMetricsProvider;
use media_queries::MediaType;
use parser::ParserContext;
use properties::{ComputedValues, StyleBuilder};
use properties::ComputedValues;
use properties::longhands::font_size;
use rule_cache::RuleCacheConditions;
use selectors::parser::SelectorParseErrorKind;
use std::cell::RefCell;
use std::fmt;
use std::sync::atomic::{AtomicBool, AtomicIsize, Ordering};
use style_traits::{CSSPixel, DevicePixel, ToCss, ParseError};
@ -252,29 +249,12 @@ pub enum Range<T> {
impl Range<specified::Length> {
fn to_computed_range(&self, device: &Device, quirks_mode: QuirksMode) -> Range<Au> {
let default_values = device.default_computed_values();
let mut conditions = RuleCacheConditions::default();
// http://dev.w3.org/csswg/mediaqueries3/#units
// em units are relative to the initial font-size.
let context = computed::Context {
is_root_element: false,
builder: StyleBuilder::for_derived_style(device, default_values, None, None),
// Servo doesn't support font metrics
// A real provider will be needed here once we do; since
// ch units can exist in media queries.
font_metrics_provider: &ServoMetricsProvider,
in_media_query: true,
cached_system_font: None,
quirks_mode,
for_smil_animation: false,
for_non_inherited_property: None,
rule_cache_conditions: RefCell::new(&mut conditions),
};
match *self {
Range::Min(ref width) => Range::Min(Au::from(width.to_computed_value(&context))),
Range::Max(ref width) => Range::Max(Au::from(width.to_computed_value(&context))),
Range::Eq(ref width) => Range::Eq(Au::from(width.to_computed_value(&context)))
}
computed::Context::for_media_query_evaluation(device, quirks_mode, |context| {
match *self {
Range::Min(ref width) => Range::Min(Au::from(width.to_computed_value(&context))),
Range::Max(ref width) => Range::Max(Au::from(width.to_computed_value(&context))),
Range::Eq(ref width) => Range::Eq(Au::from(width.to_computed_value(&context)))
}
})
}
}