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style: Remove nsCSSValue usage from font code.

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Really sorry for the size of the patch.

Differential Revision: https://phabricator.services.mozilla.com/D7753
This commit is contained in:
Emilio Cobos Álvarez 2018-10-03 23:50:21 +02:00
parent 7345af613a
commit d833754183
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GPG key ID: 056B727BB9C1027C
7 changed files with 170 additions and 219 deletions
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55
components/style/values/specified/font.rs
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@ -292,14 +292,16 @@ pub const FONT_STYLE_OBLIQUE_MAX_ANGLE_DEGREES: f32 = 90.;
pub const FONT_STYLE_OBLIQUE_MIN_ANGLE_DEGREES: f32 = -90.;
impl SpecifiedFontStyle {
/// Gets a clamped angle from a specified Angle.
pub fn compute_angle(angle: &Angle) -> ComputedAngle {
ComputedAngle::Deg(
angle
.degrees()
.max(FONT_STYLE_OBLIQUE_MIN_ANGLE_DEGREES)
.min(FONT_STYLE_OBLIQUE_MAX_ANGLE_DEGREES),
)
/// Gets a clamped angle in degrees from a specified Angle.
pub fn compute_angle_degrees(angle: &Angle) -> f32 {
angle
.degrees()
.max(FONT_STYLE_OBLIQUE_MIN_ANGLE_DEGREES)
.min(FONT_STYLE_OBLIQUE_MAX_ANGLE_DEGREES)
}
fn compute_angle(angle: &Angle) -> ComputedAngle {
ComputedAngle::Deg(Self::compute_angle_degrees(angle))
}
/// Parse a suitable angle for font-style: oblique.
@ -380,6 +382,7 @@ impl Parse for FontStyle {
/// https://drafts.csswg.org/css-fonts-4/#font-stretch-prop
#[allow(missing_docs)]
#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
#[repr(u8)]
pub enum FontStretch {
Stretch(Percentage),
Keyword(FontStretchKeyword),
@ -2057,6 +2060,29 @@ impl FontLanguageOverride {
FontLanguageOverride::Normal
}
/// The ToComputedValue implementation for non-system-font
/// FontLanguageOverride, used for @font-face descriptors.
#[inline]
pub fn compute_non_system(&self) -> computed::FontLanguageOverride {
match *self {
FontLanguageOverride::Normal => computed::FontLanguageOverride(0),
FontLanguageOverride::Override(ref lang) => {
if lang.is_empty() || lang.len() > 4 {
return computed::FontLanguageOverride(0);
}
let mut bytes = [b' '; 4];
for (byte, lang_byte) in bytes.iter_mut().zip(lang.as_bytes()) {
if !lang_byte.is_ascii() {
return computed::FontLanguageOverride(0);
}
*byte = *lang_byte;
}
computed::FontLanguageOverride(BigEndian::read_u32(&bytes))
},
FontLanguageOverride::System(..) => unreachable!(),
}
}
system_font_methods!(FontLanguageOverride, font_language_override);
}
@ -2066,19 +2092,8 @@ impl ToComputedValue for FontLanguageOverride {
#[inline]
fn to_computed_value(&self, context: &Context) -> computed::FontLanguageOverride {
match *self {
FontLanguageOverride::Normal => computed::FontLanguageOverride(0),
FontLanguageOverride::Override(ref lang) => {
if lang.is_empty() || lang.len() > 4 || !lang.is_ascii() {
return computed::FontLanguageOverride(0);
}
let mut computed_lang = lang.to_string();
while computed_lang.len() < 4 {
computed_lang.push(' ');
}
let bytes = computed_lang.into_bytes();
computed::FontLanguageOverride(BigEndian::read_u32(&bytes))
},
FontLanguageOverride::System(_) => self.compute_system(context),
_ => self.compute_non_system(),
}
}
#[inline]