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Use integer for specified and computed font-weight

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This commit is contained in:
Xidorn Quan 2017-07-06 15:31:24 +10:00
parent 4f0f2fb13e
commit 8b842f5417
11 changed files with 111 additions and 194 deletions
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31
components/style/properties/helpers/animated_properties.mako.rs
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@ -1407,38 +1407,21 @@ impl Animatable for MaxLength {
impl Animatable for FontWeight {
#[inline]
fn add_weighted(&self, other: &Self, self_portion: f64, other_portion: f64) -> Result<Self, ()> {
let a = (*self as u32) as f64;
let b = (*other as u32) as f64;
let a = self.0 as f64;
let b = other.0 as f64;
const NORMAL: f64 = 400.;
let weight = (a - NORMAL) * self_portion + (b - NORMAL) * other_portion + NORMAL;
Ok(if weight < 150. {
FontWeight::Weight100
} else if weight < 250. {
FontWeight::Weight200
} else if weight < 350. {
FontWeight::Weight300
} else if weight < 450. {
FontWeight::Weight400
} else if weight < 550. {
FontWeight::Weight500
} else if weight < 650. {
FontWeight::Weight600
} else if weight < 750. {
FontWeight::Weight700
} else if weight < 850. {
FontWeight::Weight800
} else {
FontWeight::Weight900
})
let weight = (weight.min(100.).max(900.) / 100.).round() * 100.;
Ok(FontWeight(weight as u16))
}
#[inline]
fn get_zero_value(&self) -> Result<Self, ()> { Ok(FontWeight::Weight400) }
fn get_zero_value(&self) -> Result<Self, ()> { Ok(FontWeight::normal()) }
#[inline]
fn compute_distance(&self, other: &Self) -> Result<f64, ()> {
let a = (*self as u32) as f64;
let b = (*other as u32) as f64;
let a = self.0 as f64;
let b = other.0 as f64;
a.compute_distance(&b)
}
}