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style: Use ColorMix for interpolated colors in the computed style rather than ComplexColorRatios
This among other things preserves the right color-space when interpolating currentColor. Differential Revision: https://phabricator.services.mozilla.com/D147512
This commit is contained in:
Emilio Cobos Álvarez
Martin Robinson
parent
0ac6aaa357
commit
b6e8088e8e
10 changed files with 460 additions and 537 deletions
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@ -418,7 +418,7 @@ fn tweak_when_ignoring_colors(
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fn alpha_channel(color: &Color, context: &computed::Context) -> u8 {
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// We assume here currentColor is opaque.
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let color = color.to_computed_value(context).to_rgba(RGBA::new(0, 0, 0, 255));
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let color = color.to_computed_value(context).into_rgba(RGBA::new(0, 0, 0, 255));
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color.alpha
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}
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@ -20,7 +20,7 @@ ${helpers.single_keyword(
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${helpers.predefined_type(
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"stop-color",
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"Color",
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"RGBA::new(0, 0, 0, 255).into()",
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"computed::Color::black()",
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engines="gecko",
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animation_value_type="AnimatedRGBA",
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spec="https://www.w3.org/TR/SVGTiny12/painting.html#StopColorProperty",
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@ -40,7 +40,7 @@ ${helpers.predefined_type(
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${helpers.predefined_type(
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"flood-color",
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"Color",
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"RGBA::new(0, 0, 0, 255).into()",
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"computed::Color::black()",
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engines="gecko",
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animation_value_type="AnimatedColor",
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spec="https://www.w3.org/TR/SVG/filters.html#FloodColorProperty",
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@ -58,7 +58,7 @@ ${helpers.predefined_type(
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${helpers.predefined_type(
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"lighting-color",
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"Color",
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"RGBA::new(255, 255, 255, 255).into()",
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"computed::Color::white()",
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engines="gecko",
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animation_value_type="AnimatedColor",
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spec="https://www.w3.org/TR/SVG/filters.html#LightingColorProperty",
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@ -3219,7 +3219,7 @@ impl ComputedValues {
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/// style.resolve_color(style.get_border().clone_border_top_color());
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#[inline]
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pub fn resolve_color(&self, color: computed::Color) -> RGBA {
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color.to_rgba(self.get_inherited_text().clone_color())
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color.into_rgba(self.get_inherited_text().clone_color())
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}
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/// Returns which longhand properties have different values in the two
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@ -5,9 +5,11 @@
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//! Animated types for CSS colors.
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use crate::values::animated::{Animate, Procedure, ToAnimatedZero};
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use crate::values::computed::Percentage;
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use crate::values::distance::{ComputeSquaredDistance, SquaredDistance};
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use crate::values::generics::color::{Color as GenericColor, ComplexColorRatios};
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use crate::values::specified::color::{ColorInterpolationMethod, ColorSpace, HueInterpolationMethod};
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use crate::values::generics::color::{
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GenericColor, GenericColorMix, ColorInterpolationMethod, ColorSpace, HueInterpolationMethod,
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};
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use euclid::default::{Transform3D, Vector3D};
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use std::f32::consts::PI;
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@ -15,7 +17,7 @@ use std::f32::consts::PI;
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///
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/// Unlike in computed values, each component value may exceed the
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/// range `[0.0, 1.0]`.
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#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedZero)]
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#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedZero, ToAnimatedValue)]
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#[repr(C)]
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pub struct RGBA {
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/// The red component.
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@ -48,44 +50,20 @@ impl RGBA {
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alpha,
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}
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}
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/// Returns whether or not the colour is in gamut for sRGB.
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pub fn in_gamut(&self) -> bool {
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0. <= self.red &&
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self.red <= 1. &&
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0. <= self.green &&
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self.green <= 1. &&
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0. <= self.blue &&
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self.blue <= 1.
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}
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/// Returns the colour with coordinates clamped to the sRGB range.
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pub fn clamp(&self) -> Self {
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Self {
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red: self.red.max(0.).min(1.),
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green: self.green.max(0.).min(1.),
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blue: self.blue.max(0.).min(1.),
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alpha: self.alpha,
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}
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}
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}
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impl Animate for RGBA {
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#[inline]
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fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()> {
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let mut alpha = self.alpha.animate(&other.alpha, procedure)?;
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if alpha <= 0. {
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// Ideally we should return color value that only alpha component is
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// 0, but this is what current gecko does.
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return Ok(RGBA::transparent());
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}
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alpha = alpha.min(1.);
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let red = (self.red * self.alpha).animate(&(other.red * other.alpha), procedure)?;
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let green = (self.green * self.alpha).animate(&(other.green * other.alpha), procedure)?;
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let blue = (self.blue * self.alpha).animate(&(other.blue * other.alpha), procedure)?;
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let inv = 1. / alpha;
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Ok(RGBA::new(red * inv, green * inv, blue * inv, alpha))
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let (left_weight, right_weight) = procedure.weights();
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Ok(Color::mix(
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&ColorInterpolationMethod::srgb(),
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self,
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left_weight as f32,
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other,
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right_weight as f32,
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/* normalize_weights = */ false,
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))
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}
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}
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@ -113,41 +91,38 @@ impl ComputeSquaredDistance for RGBA {
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}
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/// An animated value for `<color>`.
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pub type Color = GenericColor<RGBA>;
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pub type Color = GenericColor<RGBA, Percentage>;
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/// An animated value for `<color-mix>`.
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pub type ColorMix = GenericColorMix<Color, Percentage>;
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impl Color {
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fn effective_intermediate_rgba(&self) -> RGBA {
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if self.ratios.bg == 0. {
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return RGBA::transparent();
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}
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if self.ratios.bg == 1. {
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return self.color;
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}
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RGBA {
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alpha: self.color.alpha * self.ratios.bg,
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..self.color
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}
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fn to_rgba(&self, current_color: RGBA) -> RGBA {
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let mut clone = self.clone();
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clone.simplify(Some(¤t_color));
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*clone.as_numeric().unwrap()
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}
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/// Mix two colors into one.
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pub fn mix(
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interpolation: &ColorInterpolationMethod,
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left_color: &Color,
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left_color: &RGBA,
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mut left_weight: f32,
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right_color: &Color,
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right_color: &RGBA,
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mut right_weight: f32,
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) -> Self {
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normalize_weights: bool,
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) -> RGBA {
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// https://drafts.csswg.org/css-color-5/#color-mix-percent-norm
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let sum = left_weight + right_weight;
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let mut alpha_multiplier = 1.0;
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if sum != 1.0 {
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let scale = 1.0 / sum;
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left_weight *= scale;
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right_weight *= scale;
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if sum < 1.0 {
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alpha_multiplier = sum;
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if normalize_weights {
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let sum = left_weight + right_weight;
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if sum != 1.0 {
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let scale = 1.0 / sum;
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left_weight *= scale;
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right_weight *= scale;
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if sum < 1.0 {
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alpha_multiplier = sum;
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}
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}
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}
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@ -161,202 +136,77 @@ impl Color {
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ColorSpace::Hsl => Self::mix_in::<HSLA>,
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ColorSpace::Lch => Self::mix_in::<LCHA>,
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};
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mix_function(left_color, left_weight, right_color, right_weight, interpolation.hue, alpha_multiplier)
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mix_function(
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left_color,
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left_weight,
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right_color,
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right_weight,
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interpolation.hue,
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alpha_multiplier,
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)
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}
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fn mix_in<S>(
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left_color: &Color,
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left_color: &RGBA,
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left_weight: f32,
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right_color: &Color,
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right_color: &RGBA,
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right_weight: f32,
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hue_interpolation: HueInterpolationMethod,
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alpha_multiplier: f32,
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) -> Self
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) -> RGBA
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where
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S: ModelledColor,
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{
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let left_bg = S::from(left_color.scaled_rgba());
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let right_bg = S::from(right_color.scaled_rgba());
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let color = S::lerp(&left_bg, left_weight, &right_bg, right_weight, hue_interpolation);
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let rgba: RGBA = color.into();
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let mut rgba = if !rgba.in_gamut() {
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// TODO: Better gamut mapping.
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rgba.clamp()
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} else {
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rgba
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};
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let left = S::from(*left_color);
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let right = S::from(*right_color);
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let color = S::lerp(
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&left,
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left_weight,
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&right,
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right_weight,
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hue_interpolation,
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);
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let mut rgba = RGBA::from(color.into());
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if alpha_multiplier != 1.0 {
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rgba.alpha *= alpha_multiplier;
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}
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let fg = left_color.ratios.fg * left_weight + right_color.ratios.fg * right_weight;
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Self::new(rgba, ComplexColorRatios { bg: 1., fg })
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}
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fn scaled_rgba(&self) -> RGBA {
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if self.ratios.bg == 0. {
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return RGBA::transparent();
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}
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if self.ratios.bg == 1. {
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return self.color;
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}
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RGBA {
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red: self.color.red * self.ratios.bg,
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green: self.color.green * self.ratios.bg,
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blue: self.color.blue * self.ratios.bg,
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alpha: self.color.alpha * self.ratios.bg,
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}
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rgba
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}
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}
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impl Animate for Color {
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#[inline]
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fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()> {
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let self_numeric = self.is_numeric();
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let other_numeric = other.is_numeric();
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if self_numeric && other_numeric {
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return Ok(Self::rgba(self.color.animate(&other.color, procedure)?));
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}
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let self_currentcolor = self.is_currentcolor();
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let other_currentcolor = other.is_currentcolor();
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if self_currentcolor && other_currentcolor {
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let (self_weight, other_weight) = procedure.weights();
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return Ok(Self::new(
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RGBA::transparent(),
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ComplexColorRatios {
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bg: 0.,
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fg: (self_weight + other_weight) as f32,
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},
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));
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}
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// FIXME(emilio): Without these special cases tests fail, looks fairly
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// sketchy!
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if (self_currentcolor && other_numeric) || (self_numeric && other_currentcolor) {
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let (self_weight, other_weight) = procedure.weights();
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return Ok(if self_numeric {
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Self::new(
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self.color,
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ComplexColorRatios {
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bg: self_weight as f32,
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fg: other_weight as f32,
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},
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)
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} else {
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Self::new(
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other.color,
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ComplexColorRatios {
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bg: other_weight as f32,
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fg: self_weight as f32,
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},
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)
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});
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}
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// Compute the "scaled" contribution for `color`.
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// Each `Color`, represents a complex combination of foreground color and
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// background color where fg and bg represent the overall
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// contributions. ie:
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//
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// color = { bg * mColor, fg * foreground }
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// = { bg_color , fg_color }
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// = bg_color + fg_color
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//
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// where `foreground` is `currentcolor`, and `bg_color`,
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// `fg_color` are the scaled background and foreground
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// contributions.
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//
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// Each operation, lerp, addition, or accumulate, can be
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// represented as a scaled-addition each complex color. ie:
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//
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// p * col1 + q * col2
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//
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// where p = (1 - a), q = a for lerp(a), p = 1, q = 1 for
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// addition, etc.
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//
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// Therefore:
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//
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// col1 op col2
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// = p * col1 + q * col2
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// = p * { bg_color1, fg_color1 } + q * { bg_color2, fg_color2 }
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// = p * (bg_color1 + fg_color1) + q * (bg_color2 + fg_color2)
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// = p * bg_color1 + p * fg_color1 + q * bg_color2 + p * fg_color2
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// = (p * bg_color1 + q * bg_color2) + (p * fg_color1 + q * fg_color2)
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// = (bg_color1 op bg_color2) + (fg_color1 op fg_color2)
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//
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// fg_color1 op fg_color2 is equivalent to (fg1 op fg2) * foreground,
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// so the final color is:
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//
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// = { bg_color, fg_color }
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// = { 1 * (bg_color1 op bg_color2), (fg1 op fg2) * foreground }
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//
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// To perform the operation on two complex colors, we need to
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// generate the scaled contributions of each background color
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// component.
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let bg_color1 = self.scaled_rgba();
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let bg_color2 = other.scaled_rgba();
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// Perform bg_color1 op bg_color2
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let bg_color = bg_color1.animate(&bg_color2, procedure)?;
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// Calculate the final foreground color ratios; perform
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// animation on effective fg ratios.
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let fg = self.ratios.fg.animate(&other.ratios.fg, procedure)?;
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Ok(Self::new(bg_color, ComplexColorRatios { bg: 1., fg }))
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let (left_weight, right_weight) = procedure.weights();
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let mut color = Color::ColorMix(Box::new(ColorMix {
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interpolation: ColorInterpolationMethod::srgb(),
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left: self.clone(),
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left_percentage: Percentage(left_weight as f32),
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right: other.clone(),
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right_percentage: Percentage(right_weight as f32),
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// See https://github.com/w3c/csswg-drafts/issues/7324
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normalize_weights: false,
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}));
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color.simplify(None);
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Ok(color)
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}
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}
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impl ComputeSquaredDistance for Color {
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#[inline]
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fn compute_squared_distance(&self, other: &Self) -> Result<SquaredDistance, ()> {
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// All comments from the Animate impl also apply here.
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let self_numeric = self.is_numeric();
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let other_numeric = other.is_numeric();
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if self_numeric && other_numeric {
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return self.color.compute_squared_distance(&other.color);
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}
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let self_currentcolor = self.is_currentcolor();
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let other_currentcolor = other.is_currentcolor();
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if self_currentcolor && other_currentcolor {
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return Ok(SquaredDistance::from_sqrt(0.));
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}
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if (self_currentcolor && other_numeric) || (self_numeric && other_currentcolor) {
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let color = if self_numeric {
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&self.color
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} else {
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&other.color
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};
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// `computed_squared_distance` is symmetric.
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return Ok(color.compute_squared_distance(&RGBA::transparent())? +
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SquaredDistance::from_sqrt(1.));
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}
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let self_color = self.effective_intermediate_rgba();
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let other_color = other.effective_intermediate_rgba();
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let self_ratios = self.ratios;
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let other_ratios = other.ratios;
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Ok(self_color.compute_squared_distance(&other_color)? +
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self_ratios.bg.compute_squared_distance(&other_ratios.bg)? +
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self_ratios.fg.compute_squared_distance(&other_ratios.fg)?)
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let current_color = RGBA::transparent();
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self.to_rgba(current_color)
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.compute_squared_distance(&other.to_rgba(current_color))
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}
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}
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impl ToAnimatedZero for Color {
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#[inline]
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fn to_animated_zero(&self) -> Result<Self, ()> {
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Ok(RGBA::transparent().into())
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Ok(Color::rgba(RGBA::transparent()))
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}
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}
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@ -488,9 +338,23 @@ fn interpolate_premultiplied(
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for i in 0..3 {
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let is_hue = hue_index == Some(i);
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result[i] = if is_hue {
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interpolate_hue(left[i], left_weight, right[i], right_weight, hue_interpolation)
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interpolate_hue(
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left[i],
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left_weight,
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right[i],
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right_weight,
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hue_interpolation,
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)
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} else {
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interpolate_premultiplied_component(left[i], left_weight, left_alpha, right[i], right_weight, right_alpha, inverse_of_result_alpha)
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interpolate_premultiplied_component(
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left[i],
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left_weight,
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left_alpha,
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right[i],
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right_weight,
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right_alpha,
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inverse_of_result_alpha,
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)
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};
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}
|
||||
result[3] = result_alpha;
|
||||
|
|
@ -524,7 +388,7 @@ macro_rules! impl_lerp {
|
|||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
impl_lerp!(RGBA, None);
|
||||
|
|
@ -614,7 +478,12 @@ impl_lerp!(HSLA, Some(0));
|
|||
//
|
||||
// We also return min/max for the hwb conversion.
|
||||
fn rgb_to_hsl(rgba: RGBA) -> (HSLA, f32, f32) {
|
||||
let RGBA { red, green, blue, alpha } = rgba;
|
||||
let RGBA {
|
||||
red,
|
||||
green,
|
||||
blue,
|
||||
alpha,
|
||||
} = rgba;
|
||||
let max = red.max(green).max(blue);
|
||||
let min = red.min(green).min(blue);
|
||||
let mut hue = std::f32::NAN;
|
||||
|
|
@ -640,7 +509,16 @@ fn rgb_to_hsl(rgba: RGBA) -> (HSLA, f32, f32) {
|
|||
hue *= 60.;
|
||||
}
|
||||
|
||||
(HSLA { hue, sat, light, alpha }, min, max)
|
||||
(
|
||||
HSLA {
|
||||
hue,
|
||||
sat,
|
||||
light,
|
||||
alpha,
|
||||
},
|
||||
min,
|
||||
max,
|
||||
)
|
||||
}
|
||||
|
||||
impl From<RGBA> for HSLA {
|
||||
|
|
@ -750,7 +628,7 @@ impl From<XYZD50A> for XYZD65A {
|
|||
0.0632593086610217, 0.021041398966943008, 1.3303659366080753, 0.,
|
||||
0., 0., 0., 1.,
|
||||
);
|
||||
let d65 = BRADFORD_INVERSE.transform_vector3d(Vector3D::new(d50.x, d50.y, d50.z));
|
||||
let d65 = BRADFORD_INVERSE.transform_vector3d(Vector3D::new(d50.x, d50.y, d50.z));
|
||||
Self {
|
||||
x: d65.x,
|
||||
y: d65.y,
|
||||
|
|
|
|||
|
|
@ -7,6 +7,7 @@
|
|||
use crate::values::animated::color::RGBA as AnimatedRGBA;
|
||||
use crate::values::animated::ToAnimatedValue;
|
||||
use crate::values::generics::color::{GenericCaretColor, GenericColor, GenericColorOrAuto};
|
||||
use crate::values::computed::percentage::Percentage;
|
||||
use cssparser::{Color as CSSParserColor, RGBA};
|
||||
use std::fmt;
|
||||
use style_traits::{CssWriter, ToCss};
|
||||
|
|
@ -20,7 +21,20 @@ pub type ColorPropertyValue = RGBA;
|
|||
pub type MozFontSmoothingBackgroundColor = RGBA;
|
||||
|
||||
/// A computed value for `<color>`.
|
||||
pub type Color = GenericColor<RGBA>;
|
||||
pub type Color = GenericColor<RGBA, Percentage>;
|
||||
|
||||
impl ToCss for Color {
|
||||
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
||||
where
|
||||
W: fmt::Write,
|
||||
{
|
||||
match *self {
|
||||
Self::Numeric(ref c) => c.to_css(dest),
|
||||
Self::CurrentColor => CSSParserColor::CurrentColor.to_css(dest),
|
||||
Self::ColorMix(ref m) => m.to_css(dest),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Color {
|
||||
/// Returns a complex color value representing transparent.
|
||||
|
|
@ -28,67 +42,21 @@ impl Color {
|
|||
Color::rgba(RGBA::transparent())
|
||||
}
|
||||
|
||||
/// Combine this complex color with the given foreground color into
|
||||
/// a numeric RGBA color. It currently uses linear blending.
|
||||
pub fn to_rgba(&self, fg_color: RGBA) -> RGBA {
|
||||
// Common cases that the complex color is either pure numeric color or
|
||||
// pure currentcolor.
|
||||
if self.is_numeric() {
|
||||
return self.color;
|
||||
}
|
||||
|
||||
if self.is_currentcolor() {
|
||||
return fg_color;
|
||||
}
|
||||
|
||||
let ratios = &self.ratios;
|
||||
let color = &self.color;
|
||||
|
||||
// For the more complicated case that the alpha value differs,
|
||||
// we use the following formula to compute the components:
|
||||
// alpha = self_alpha * bg_ratio + fg_alpha * fg_ratio
|
||||
// color = (self_color * self_alpha * bg_ratio +
|
||||
// fg_color * fg_alpha * fg_ratio) / alpha
|
||||
|
||||
let p1 = ratios.bg;
|
||||
let a1 = color.alpha_f32();
|
||||
let r1 = a1 * color.red_f32();
|
||||
let g1 = a1 * color.green_f32();
|
||||
let b1 = a1 * color.blue_f32();
|
||||
|
||||
let p2 = ratios.fg;
|
||||
let a2 = fg_color.alpha_f32();
|
||||
let r2 = a2 * fg_color.red_f32();
|
||||
let g2 = a2 * fg_color.green_f32();
|
||||
let b2 = a2 * fg_color.blue_f32();
|
||||
|
||||
let a = p1 * a1 + p2 * a2;
|
||||
if a <= 0. {
|
||||
return RGBA::transparent();
|
||||
}
|
||||
let a = a.min(1.);
|
||||
|
||||
let inv = 1. / a;
|
||||
|
||||
let r = (p1 * r1 + p2 * r2) * inv;
|
||||
let g = (p1 * g1 + p2 * g2) * inv;
|
||||
let b = (p1 * b1 + p2 * b2) * inv;
|
||||
RGBA::from_floats(r, g, b, a)
|
||||
/// Returns opaque black.
|
||||
pub fn black() -> Color {
|
||||
Color::rgba(RGBA::new(0, 0, 0, 255))
|
||||
}
|
||||
}
|
||||
|
||||
impl ToCss for Color {
|
||||
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
||||
where
|
||||
W: fmt::Write,
|
||||
{
|
||||
if self.is_currentcolor() {
|
||||
return CSSParserColor::CurrentColor.to_css(dest);
|
||||
}
|
||||
if self.is_numeric() {
|
||||
return self.color.to_css(dest);
|
||||
}
|
||||
Ok(())
|
||||
/// Returns opaque white.
|
||||
pub fn white() -> Color {
|
||||
Color::rgba(RGBA::new(255, 255, 255, 255))
|
||||
}
|
||||
|
||||
/// Combine this complex color with the given foreground color into
|
||||
/// a numeric RGBA color.
|
||||
pub fn into_rgba(mut self, current_color: RGBA) -> RGBA {
|
||||
self.simplify(Some(¤t_color));
|
||||
*self.as_numeric().unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
|
||||
use crate::values::animated::ToAnimatedValue;
|
||||
use crate::values::generics::NonNegative;
|
||||
use crate::values::specified::percentage::ToPercentage;
|
||||
use crate::values::{serialize_percentage, CSSFloat};
|
||||
use crate::Zero;
|
||||
use std::fmt;
|
||||
|
|
@ -64,6 +65,12 @@ impl Zero for Percentage {
|
|||
}
|
||||
}
|
||||
|
||||
impl ToPercentage for Percentage {
|
||||
fn to_percentage(&self) -> CSSFloat {
|
||||
self.0
|
||||
}
|
||||
}
|
||||
|
||||
impl std::ops::AddAssign for Percentage {
|
||||
fn add_assign(&mut self, other: Self) {
|
||||
self.0 += other.0
|
||||
|
|
|
|||
|
|
@ -8,7 +8,6 @@ use crate::values::computed::color::Color;
|
|||
use crate::values::computed::url::ComputedUrl;
|
||||
use crate::values::computed::{LengthPercentage, NonNegativeLengthPercentage, Opacity};
|
||||
use crate::values::generics::svg as generic;
|
||||
use crate::values::RGBA;
|
||||
use crate::Zero;
|
||||
|
||||
pub use crate::values::specified::{DProperty, MozContextProperties, SVGPaintOrder};
|
||||
|
|
@ -22,9 +21,8 @@ pub type SVGPaintKind = generic::GenericSVGPaintKind<Color, ComputedUrl>;
|
|||
impl SVGPaint {
|
||||
/// Opaque black color
|
||||
pub fn black() -> Self {
|
||||
let rgba = RGBA::from_floats(0., 0., 0., 1.).into();
|
||||
SVGPaint {
|
||||
kind: generic::SVGPaintKind::Color(rgba),
|
||||
kind: generic::SVGPaintKind::Color(Color::black()),
|
||||
fallback: generic::SVGPaintFallback::Unset,
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -4,81 +4,268 @@
|
|||
|
||||
//! Generic types for color properties.
|
||||
|
||||
/// Ratios representing the contribution of color and currentcolor to
|
||||
/// the final color value.
|
||||
///
|
||||
/// NOTE(emilio): For animated colors, the sum of these two might be more than
|
||||
/// one (because the background color would've been scaled down already). So
|
||||
/// beware that it is not generally safe to assume that if bg is 1 then fg is 0,
|
||||
/// for example.
|
||||
#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToShmem)]
|
||||
#[repr(C)]
|
||||
pub struct ComplexColorRatios {
|
||||
/// Numeric color contribution.
|
||||
pub bg: f32,
|
||||
/// currentcolor contribution.
|
||||
pub fg: f32,
|
||||
}
|
||||
|
||||
impl ComplexColorRatios {
|
||||
/// Ratios representing a `Numeric` color.
|
||||
pub const NUMERIC: ComplexColorRatios = ComplexColorRatios { bg: 1., fg: 0. };
|
||||
/// Ratios representing the `CurrentColor` color.
|
||||
pub const CURRENT_COLOR: ComplexColorRatios = ComplexColorRatios { bg: 0., fg: 1. };
|
||||
}
|
||||
use std::fmt::{self, Write};
|
||||
use style_traits::{CssWriter, ParseError, ToCss};
|
||||
use crate::values::{Parse, ParserContext, Parser};
|
||||
use crate::values::specified::percentage::ToPercentage;
|
||||
use crate::values::animated::ToAnimatedValue;
|
||||
use crate::values::animated::color::RGBA as AnimatedRGBA;
|
||||
|
||||
/// This struct represents a combined color from a numeric color and
|
||||
/// the current foreground color (currentcolor keyword).
|
||||
#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToShmem)]
|
||||
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToShmem)]
|
||||
#[repr(C)]
|
||||
pub struct GenericColor<RGBA> {
|
||||
pub enum GenericColor<RGBA, Percentage> {
|
||||
/// The actual numeric color.
|
||||
pub color: RGBA,
|
||||
/// The ratios of mixing between numeric and currentcolor.
|
||||
/// The formula is: `color * ratios.bg + currentcolor * ratios.fg`.
|
||||
pub ratios: ComplexColorRatios,
|
||||
Numeric(RGBA),
|
||||
/// The `CurrentColor` keyword.
|
||||
CurrentColor,
|
||||
/// The color-mix() function.
|
||||
ColorMix(Box<GenericColorMix<Self, Percentage>>),
|
||||
}
|
||||
|
||||
/// A color space as defined in [1].
|
||||
///
|
||||
/// [1]: https://drafts.csswg.org/css-color-4/#typedef-color-space
|
||||
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToAnimatedValue, ToComputedValue, ToCss, ToResolvedValue, ToShmem)]
|
||||
#[repr(u8)]
|
||||
pub enum ColorSpace {
|
||||
/// The sRGB color space.
|
||||
Srgb,
|
||||
/// The linear-sRGB color space.
|
||||
LinearSrgb,
|
||||
/// The CIEXYZ color space.
|
||||
#[parse(aliases = "xyz-d65")]
|
||||
Xyz,
|
||||
/// https://drafts.csswg.org/css-color-4/#valdef-color-xyz
|
||||
XyzD50,
|
||||
/// The CIELAB color space.
|
||||
Lab,
|
||||
/// https://drafts.csswg.org/css-color-4/#valdef-hsl-hsl
|
||||
Hsl,
|
||||
/// https://drafts.csswg.org/css-color-4/#valdef-hwb-hwb
|
||||
Hwb,
|
||||
/// The CIELAB color space, expressed in cylindrical coordinates.
|
||||
Lch,
|
||||
// TODO: Oklab, Lch
|
||||
}
|
||||
|
||||
impl ColorSpace {
|
||||
/// Returns whether this is a `<polar-color-space>`.
|
||||
pub fn is_polar(self) -> bool {
|
||||
match self {
|
||||
Self::Srgb | Self::LinearSrgb | Self::Xyz | Self::XyzD50 | Self::Lab => false,
|
||||
Self::Hsl | Self::Hwb | Self::Lch => true,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// A hue-interpolation-method as defined in [1].
|
||||
///
|
||||
/// [1]: https://drafts.csswg.org/css-color-4/#typedef-hue-interpolation-method
|
||||
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToAnimatedValue, ToComputedValue, ToCss, ToResolvedValue, ToShmem)]
|
||||
#[repr(u8)]
|
||||
pub enum HueInterpolationMethod {
|
||||
/// https://drafts.csswg.org/css-color-4/#shorter
|
||||
Shorter,
|
||||
/// https://drafts.csswg.org/css-color-4/#longer
|
||||
Longer,
|
||||
/// https://drafts.csswg.org/css-color-4/#increasing
|
||||
Increasing,
|
||||
/// https://drafts.csswg.org/css-color-4/#decreasing
|
||||
Decreasing,
|
||||
/// https://drafts.csswg.org/css-color-4/#specified
|
||||
Specified,
|
||||
}
|
||||
|
||||
/// https://drafts.csswg.org/css-color-4/#color-interpolation-method
|
||||
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq, ToShmem, ToAnimatedValue, ToComputedValue, ToResolvedValue)]
|
||||
#[repr(C)]
|
||||
pub struct ColorInterpolationMethod {
|
||||
/// The color-space the interpolation should be done in.
|
||||
pub space: ColorSpace,
|
||||
/// The hue interpolation method.
|
||||
pub hue: HueInterpolationMethod,
|
||||
}
|
||||
|
||||
impl ColorInterpolationMethod {
|
||||
/// Returns the srgb interpolation method.
|
||||
pub fn srgb() -> Self {
|
||||
Self {
|
||||
space: ColorSpace::Srgb,
|
||||
hue: HueInterpolationMethod::Shorter,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Parse for ColorInterpolationMethod {
|
||||
fn parse<'i, 't>(
|
||||
_: &ParserContext,
|
||||
input: &mut Parser<'i, 't>,
|
||||
) -> Result<Self, ParseError<'i>> {
|
||||
input.expect_ident_matching("in")?;
|
||||
let space = ColorSpace::parse(input)?;
|
||||
// https://drafts.csswg.org/css-color-4/#hue-interpolation
|
||||
// Unless otherwise specified, if no specific hue interpolation
|
||||
// algorithm is selected by the host syntax, the default is shorter.
|
||||
let hue = if space.is_polar() {
|
||||
input.try_parse(|input| -> Result<_, ParseError<'i>> {
|
||||
let hue = HueInterpolationMethod::parse(input)?;
|
||||
input.expect_ident_matching("hue")?;
|
||||
Ok(hue)
|
||||
}).unwrap_or(HueInterpolationMethod::Shorter)
|
||||
} else {
|
||||
HueInterpolationMethod::Shorter
|
||||
};
|
||||
Ok(Self { space, hue })
|
||||
}
|
||||
}
|
||||
|
||||
impl ToCss for ColorInterpolationMethod {
|
||||
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
||||
where
|
||||
W: Write,
|
||||
{
|
||||
dest.write_str("in ")?;
|
||||
self.space.to_css(dest)?;
|
||||
if self.hue != HueInterpolationMethod::Shorter {
|
||||
dest.write_char(' ')?;
|
||||
self.hue.to_css(dest)?;
|
||||
dest.write_str(" hue")?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
/// A restricted version of the css `color-mix()` function, which only supports
|
||||
/// percentages.
|
||||
///
|
||||
/// https://drafts.csswg.org/css-color-5/#color-mix
|
||||
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToComputedValue, ToResolvedValue, ToShmem)]
|
||||
#[allow(missing_docs)]
|
||||
#[repr(C)]
|
||||
pub struct GenericColorMix<Color, Percentage> {
|
||||
pub interpolation: ColorInterpolationMethod,
|
||||
pub left: Color,
|
||||
pub left_percentage: Percentage,
|
||||
pub right: Color,
|
||||
pub right_percentage: Percentage,
|
||||
pub normalize_weights: bool,
|
||||
}
|
||||
|
||||
pub use self::GenericColorMix as ColorMix;
|
||||
|
||||
impl<Color: ToCss, Percentage: ToCss + ToPercentage> ToCss for ColorMix<Color, Percentage> {
|
||||
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
||||
where
|
||||
W: Write,
|
||||
{
|
||||
fn can_omit<Percentage: ToPercentage>(percent: &Percentage, other: &Percentage, is_left: bool) -> bool {
|
||||
if percent.is_calc() {
|
||||
return false;
|
||||
}
|
||||
if percent.to_percentage() == 0.5 {
|
||||
return other.to_percentage() == 0.5;
|
||||
}
|
||||
if is_left {
|
||||
return false;
|
||||
}
|
||||
(1.0 - percent.to_percentage() - other.to_percentage()).abs() <= f32::EPSILON
|
||||
}
|
||||
|
||||
dest.write_str("color-mix(")?;
|
||||
self.interpolation.to_css(dest)?;
|
||||
dest.write_str(", ")?;
|
||||
self.left.to_css(dest)?;
|
||||
if !can_omit(&self.left_percentage, &self.right_percentage, true) {
|
||||
dest.write_str(" ")?;
|
||||
self.left_percentage.to_css(dest)?;
|
||||
}
|
||||
dest.write_str(", ")?;
|
||||
self.right.to_css(dest)?;
|
||||
if !can_omit(&self.right_percentage, &self.left_percentage, false) {
|
||||
dest.write_str(" ")?;
|
||||
self.right_percentage.to_css(dest)?;
|
||||
}
|
||||
dest.write_str(")")
|
||||
}
|
||||
}
|
||||
|
||||
impl<RGBA, Percentage> ColorMix<GenericColor<RGBA, Percentage>, Percentage> {
|
||||
fn to_rgba(&self) -> Option<RGBA>
|
||||
where
|
||||
RGBA: Clone + ToAnimatedValue<AnimatedValue = AnimatedRGBA>,
|
||||
Percentage: ToPercentage,
|
||||
{
|
||||
use crate::values::animated::color::Color as AnimatedColor;
|
||||
let left = self.left.as_numeric()?.clone().to_animated_value();
|
||||
let right = self.right.as_numeric()?.clone().to_animated_value();
|
||||
Some(ToAnimatedValue::from_animated_value(AnimatedColor::mix(
|
||||
&self.interpolation,
|
||||
&left,
|
||||
self.left_percentage.to_percentage(),
|
||||
&right,
|
||||
self.right_percentage.to_percentage(),
|
||||
self.normalize_weights,
|
||||
)))
|
||||
}
|
||||
}
|
||||
|
||||
pub use self::GenericColor as Color;
|
||||
|
||||
impl Color<cssparser::RGBA> {
|
||||
/// Returns a color value representing currentcolor.
|
||||
pub fn currentcolor() -> Self {
|
||||
Color {
|
||||
color: cssparser::RGBA::transparent(),
|
||||
ratios: ComplexColorRatios::CURRENT_COLOR,
|
||||
impl<RGBA, Percentage> Color<RGBA, Percentage> {
|
||||
/// Returns the numeric rgba value if this color is numeric, or None
|
||||
/// otherwise.
|
||||
pub fn as_numeric(&self) -> Option<&RGBA> {
|
||||
match *self {
|
||||
Self::Numeric(ref rgba) => Some(rgba),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<RGBA> Color<RGBA> {
|
||||
/// Create a color based upon the specified ratios.
|
||||
pub fn new(color: RGBA, ratios: ComplexColorRatios) -> Self {
|
||||
Self { color, ratios }
|
||||
/// Simplifies the color-mix()es to the extent possible given a current
|
||||
/// color (or not).
|
||||
pub fn simplify(&mut self, current_color: Option<&RGBA>)
|
||||
where
|
||||
RGBA: Clone + ToAnimatedValue<AnimatedValue = AnimatedRGBA>,
|
||||
Percentage: ToPercentage,
|
||||
{
|
||||
match *self {
|
||||
Self::Numeric(..) => {},
|
||||
Self::CurrentColor => {
|
||||
if let Some(c) = current_color {
|
||||
*self = Self::Numeric(c.clone());
|
||||
}
|
||||
},
|
||||
Self::ColorMix(ref mut mix) => {
|
||||
mix.left.simplify(current_color);
|
||||
mix.right.simplify(current_color);
|
||||
|
||||
if let Some(mix) = mix.to_rgba() {
|
||||
*self = Self::Numeric(mix);
|
||||
}
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns a color value representing currentcolor.
|
||||
pub fn currentcolor() -> Self {
|
||||
Self::CurrentColor
|
||||
}
|
||||
|
||||
/// Returns a numeric color representing the given RGBA value.
|
||||
pub fn rgba(color: RGBA) -> Self {
|
||||
Self {
|
||||
color,
|
||||
ratios: ComplexColorRatios::NUMERIC,
|
||||
}
|
||||
}
|
||||
|
||||
/// Whether it is a numeric color (no currentcolor component).
|
||||
pub fn is_numeric(&self) -> bool {
|
||||
self.ratios == ComplexColorRatios::NUMERIC
|
||||
Self::Numeric(color)
|
||||
}
|
||||
|
||||
/// Whether it is a currentcolor value (no numeric color component).
|
||||
pub fn is_currentcolor(&self) -> bool {
|
||||
self.ratios == ComplexColorRatios::CURRENT_COLOR
|
||||
matches!(*self, Self::CurrentColor)
|
||||
}
|
||||
}
|
||||
|
||||
impl<RGBA> From<RGBA> for Color<RGBA> {
|
||||
fn from(color: RGBA) -> Self {
|
||||
Self::rgba(color)
|
||||
/// Whether it is a numeric color (no currentcolor component).
|
||||
pub fn is_numeric(&self) -> bool {
|
||||
matches!(*self, Self::Numeric(..))
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@
|
|||
use super::AllowQuirks;
|
||||
use crate::parser::{Parse, ParserContext};
|
||||
use crate::values::computed::{Color as ComputedColor, Context, ToComputedValue};
|
||||
use crate::values::generics::color::{GenericCaretColor, GenericColorOrAuto};
|
||||
use crate::values::generics::color::{ColorInterpolationMethod, GenericColorMix, GenericCaretColor, GenericColorOrAuto};
|
||||
use crate::values::specified::calc::CalcNode;
|
||||
use crate::values::specified::Percentage;
|
||||
use crate::values::CustomIdent;
|
||||
|
|
@ -19,119 +19,8 @@ use std::io::Write as IoWrite;
|
|||
use style_traits::{CssType, CssWriter, KeywordsCollectFn, ParseError, StyleParseErrorKind};
|
||||
use style_traits::{SpecifiedValueInfo, ToCss, ValueParseErrorKind};
|
||||
|
||||
/// A color space as defined in [1].
|
||||
///
|
||||
/// [1]: https://drafts.csswg.org/css-color-4/#typedef-color-space
|
||||
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToCss, ToShmem)]
|
||||
pub enum ColorSpace {
|
||||
/// The sRGB color space.
|
||||
Srgb,
|
||||
/// The linear-sRGB color space.
|
||||
LinearSrgb,
|
||||
/// The CIEXYZ color space.
|
||||
#[parse(aliases = "xyz-d65")]
|
||||
Xyz,
|
||||
/// https://drafts.csswg.org/css-color-4/#valdef-color-xyz
|
||||
XyzD50,
|
||||
/// The CIELAB color space.
|
||||
Lab,
|
||||
/// https://drafts.csswg.org/css-color-4/#valdef-hsl-hsl
|
||||
Hsl,
|
||||
/// https://drafts.csswg.org/css-color-4/#valdef-hwb-hwb
|
||||
Hwb,
|
||||
/// The CIELAB color space, expressed in cylindrical coordinates.
|
||||
Lch,
|
||||
// TODO: Oklab, Lch
|
||||
}
|
||||
|
||||
impl ColorSpace {
|
||||
/// Returns whether this is a `<polar-color-space>`.
|
||||
pub fn is_polar(self) -> bool {
|
||||
match self {
|
||||
Self::Srgb | Self::LinearSrgb | Self::Xyz | Self::XyzD50 | Self::Lab => false,
|
||||
Self::Hsl | Self::Hwb | Self::Lch => true,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// A hue-interpolation-method as defined in [1].
|
||||
///
|
||||
/// [1]: https://drafts.csswg.org/css-color-4/#typedef-hue-interpolation-method
|
||||
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToCss, ToShmem)]
|
||||
pub enum HueInterpolationMethod {
|
||||
/// https://drafts.csswg.org/css-color-4/#shorter
|
||||
Shorter,
|
||||
/// https://drafts.csswg.org/css-color-4/#longer
|
||||
Longer,
|
||||
/// https://drafts.csswg.org/css-color-4/#increasing
|
||||
Increasing,
|
||||
/// https://drafts.csswg.org/css-color-4/#decreasing
|
||||
Decreasing,
|
||||
/// https://drafts.csswg.org/css-color-4/#specified
|
||||
Specified,
|
||||
}
|
||||
|
||||
/// https://drafts.csswg.org/css-color-4/#color-interpolation-method
|
||||
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq, ToShmem)]
|
||||
pub struct ColorInterpolationMethod {
|
||||
/// The color-space the interpolation should be done in.
|
||||
pub space: ColorSpace,
|
||||
/// The hue interpolation method.
|
||||
pub hue: HueInterpolationMethod,
|
||||
}
|
||||
|
||||
impl Parse for ColorInterpolationMethod {
|
||||
fn parse<'i, 't>(
|
||||
_: &ParserContext,
|
||||
input: &mut Parser<'i, 't>,
|
||||
) -> Result<Self, ParseError<'i>> {
|
||||
input.expect_ident_matching("in")?;
|
||||
let space = ColorSpace::parse(input)?;
|
||||
// https://drafts.csswg.org/css-color-4/#hue-interpolation
|
||||
// Unless otherwise specified, if no specific hue interpolation
|
||||
// algorithm is selected by the host syntax, the default is shorter.
|
||||
let hue = if space.is_polar() {
|
||||
input.try_parse(|input| -> Result<_, ParseError<'i>> {
|
||||
let hue = HueInterpolationMethod::parse(input)?;
|
||||
input.expect_ident_matching("hue")?;
|
||||
Ok(hue)
|
||||
}).unwrap_or(HueInterpolationMethod::Shorter)
|
||||
} else {
|
||||
HueInterpolationMethod::Shorter
|
||||
};
|
||||
Ok(Self { space, hue })
|
||||
}
|
||||
}
|
||||
|
||||
impl ToCss for ColorInterpolationMethod {
|
||||
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
||||
where
|
||||
W: Write,
|
||||
{
|
||||
dest.write_str("in ")?;
|
||||
self.space.to_css(dest)?;
|
||||
if self.hue != HueInterpolationMethod::Shorter {
|
||||
dest.write_char(' ')?;
|
||||
self.hue.to_css(dest)?;
|
||||
dest.write_str(" hue")?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
/// A restricted version of the css `color-mix()` function, which only supports
|
||||
/// percentages.
|
||||
///
|
||||
/// https://drafts.csswg.org/css-color-5/#color-mix
|
||||
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToShmem)]
|
||||
#[allow(missing_docs)]
|
||||
pub struct ColorMix {
|
||||
pub interpolation: ColorInterpolationMethod,
|
||||
pub left: Color,
|
||||
pub left_percentage: Percentage,
|
||||
pub right: Color,
|
||||
pub right_percentage: Percentage,
|
||||
}
|
||||
/// A specified color-mix().
|
||||
pub type ColorMix = GenericColorMix<Color, Percentage>;
|
||||
|
||||
#[inline]
|
||||
fn allow_color_mix() -> bool {
|
||||
|
|
@ -160,7 +49,9 @@ impl Parse for ColorMix {
|
|||
input.expect_comma()?;
|
||||
|
||||
let try_parse_percentage = |input: &mut Parser| -> Option<Percentage> {
|
||||
input.try_parse(|input| Percentage::parse_zero_to_a_hundred(context, input)).ok()
|
||||
input
|
||||
.try_parse(|input| Percentage::parse_zero_to_a_hundred(context, input))
|
||||
.ok()
|
||||
};
|
||||
|
||||
let mut left_percentage = try_parse_percentage(input);
|
||||
|
|
@ -180,9 +71,8 @@ impl Parse for ColorMix {
|
|||
right_percentage = try_parse_percentage(input);
|
||||
}
|
||||
|
||||
let right_percentage = right_percentage.unwrap_or_else(|| {
|
||||
Percentage::new(1.0 - left_percentage.map_or(0.5, |p| p.get()))
|
||||
});
|
||||
let right_percentage = right_percentage
|
||||
.unwrap_or_else(|| Percentage::new(1.0 - left_percentage.map_or(0.5, |p| p.get())));
|
||||
|
||||
let left_percentage =
|
||||
left_percentage.unwrap_or_else(|| Percentage::new(1.0 - right_percentage.get()));
|
||||
|
|
@ -198,47 +88,12 @@ impl Parse for ColorMix {
|
|||
left_percentage,
|
||||
right,
|
||||
right_percentage,
|
||||
normalize_weights: true,
|
||||
})
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
impl ToCss for ColorMix {
|
||||
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
||||
where
|
||||
W: Write,
|
||||
{
|
||||
fn can_omit(percent: &Percentage, other: &Percentage, is_left: bool) -> bool {
|
||||
if percent.is_calc() {
|
||||
return false;
|
||||
}
|
||||
if percent.get() == 0.5 {
|
||||
return other.get() == 0.5;
|
||||
}
|
||||
if is_left {
|
||||
return false;
|
||||
}
|
||||
(1.0 - percent.get() - other.get()).abs() <= f32::EPSILON
|
||||
}
|
||||
|
||||
dest.write_str("color-mix(")?;
|
||||
self.interpolation.to_css(dest)?;
|
||||
dest.write_str(", ")?;
|
||||
self.left.to_css(dest)?;
|
||||
if !can_omit(&self.left_percentage, &self.right_percentage, true) {
|
||||
dest.write_str(" ")?;
|
||||
self.left_percentage.to_css(dest)?;
|
||||
}
|
||||
dest.write_str(", ")?;
|
||||
self.right.to_css(dest)?;
|
||||
if !can_omit(&self.right_percentage, &self.left_percentage, false) {
|
||||
dest.write_str(" ")?;
|
||||
self.right_percentage.to_css(dest)?;
|
||||
}
|
||||
dest.write_str(")")
|
||||
}
|
||||
}
|
||||
|
||||
/// Specified color value
|
||||
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToShmem)]
|
||||
pub enum Color {
|
||||
|
|
@ -251,8 +106,6 @@ pub enum Color {
|
|||
/// Authored representation
|
||||
authored: Option<Box<str>>,
|
||||
},
|
||||
/// A complex color value from computed value
|
||||
Complex(ComputedColor),
|
||||
/// A system color.
|
||||
#[cfg(feature = "gecko")]
|
||||
System(SystemColor),
|
||||
|
|
@ -640,8 +493,6 @@ impl ToCss for Color {
|
|||
Color::Numeric {
|
||||
parsed: ref rgba, ..
|
||||
} => rgba.to_css(dest),
|
||||
// TODO: Could represent this as a color-mix() instead.
|
||||
Color::Complex(_) => Ok(()),
|
||||
Color::ColorMix(ref mix) => mix.to_css(dest),
|
||||
#[cfg(feature = "gecko")]
|
||||
Color::System(system) => system.to_css(dest),
|
||||
|
|
@ -787,22 +638,23 @@ impl Color {
|
|||
/// the context to resolve, then `None` is returned.
|
||||
pub fn to_computed_color(&self, context: Option<&Context>) -> Option<ComputedColor> {
|
||||
Some(match *self {
|
||||
Color::CurrentColor => ComputedColor::currentcolor(),
|
||||
Color::Numeric { ref parsed, .. } => ComputedColor::rgba(*parsed),
|
||||
Color::Complex(ref complex) => *complex,
|
||||
Color::CurrentColor => ComputedColor::CurrentColor,
|
||||
Color::Numeric { ref parsed, .. } => ComputedColor::Numeric(*parsed),
|
||||
Color::ColorMix(ref mix) => {
|
||||
use crate::values::animated::color::Color as AnimatedColor;
|
||||
use crate::values::animated::ToAnimatedValue;
|
||||
use crate::values::computed::percentage::Percentage;
|
||||
|
||||
let left = mix.left.to_computed_color(context)?.to_animated_value();
|
||||
let right = mix.right.to_computed_color(context)?.to_animated_value();
|
||||
ToAnimatedValue::from_animated_value(AnimatedColor::mix(
|
||||
&mix.interpolation,
|
||||
&left,
|
||||
mix.left_percentage.get(),
|
||||
&right,
|
||||
mix.right_percentage.get(),
|
||||
))
|
||||
let left = mix.left.to_computed_color(context)?;
|
||||
let right = mix.right.to_computed_color(context)?;
|
||||
let mut color = ComputedColor::ColorMix(Box::new(GenericColorMix {
|
||||
interpolation: mix.interpolation,
|
||||
left,
|
||||
left_percentage: Percentage(mix.left_percentage.get()),
|
||||
right,
|
||||
right_percentage: Percentage(mix.right_percentage.get()),
|
||||
normalize_weights: mix.normalize_weights,
|
||||
}));
|
||||
color.simplify(None);
|
||||
color
|
||||
},
|
||||
#[cfg(feature = "gecko")]
|
||||
Color::System(system) => system.compute(context?),
|
||||
|
|
@ -820,13 +672,13 @@ impl ToComputedValue for Color {
|
|||
}
|
||||
|
||||
fn from_computed_value(computed: &ComputedColor) -> Self {
|
||||
if computed.is_numeric() {
|
||||
return Color::rgba(computed.color);
|
||||
match *computed {
|
||||
ComputedColor::Numeric(ref color) => Color::rgba(*color),
|
||||
ComputedColor::CurrentColor => Color::CurrentColor,
|
||||
ComputedColor::ColorMix(ref mix) => {
|
||||
Color::ColorMix(Box::new(ToComputedValue::from_computed_value(&**mix)))
|
||||
},
|
||||
}
|
||||
if computed.is_currentcolor() {
|
||||
return Color::currentcolor();
|
||||
}
|
||||
Color::Complex(*computed)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -854,7 +706,7 @@ impl ToComputedValue for MozFontSmoothingBackgroundColor {
|
|||
fn to_computed_value(&self, context: &Context) -> RGBA {
|
||||
self.0
|
||||
.to_computed_value(context)
|
||||
.to_rgba(RGBA::transparent())
|
||||
.into_rgba(RGBA::transparent())
|
||||
}
|
||||
|
||||
fn from_computed_value(computed: &RGBA) -> Self {
|
||||
|
|
@ -871,7 +723,15 @@ impl SpecifiedValueInfo for Color {
|
|||
// should probably be handled that way as well.
|
||||
// XXX `currentColor` should really be `currentcolor`. But let's
|
||||
// keep it consistent with the old system for now.
|
||||
f(&["rgb", "rgba", "hsl", "hsla", "hwb", "currentColor", "transparent"]);
|
||||
f(&[
|
||||
"rgb",
|
||||
"rgba",
|
||||
"hsl",
|
||||
"hsla",
|
||||
"hwb",
|
||||
"currentColor",
|
||||
"transparent",
|
||||
]);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -888,7 +748,7 @@ impl ToComputedValue for ColorPropertyValue {
|
|||
fn to_computed_value(&self, context: &Context) -> RGBA {
|
||||
self.0
|
||||
.to_computed_value(context)
|
||||
.to_rgba(context.builder.get_parent_inherited_text().clone_color())
|
||||
.into_rgba(context.builder.get_parent_inherited_text().clone_color())
|
||||
}
|
||||
|
||||
#[inline]
|
||||
|
|
@ -1050,7 +910,19 @@ impl ToCss for ColorScheme {
|
|||
}
|
||||
|
||||
/// https://drafts.csswg.org/css-color-adjust/#print-color-adjust
|
||||
#[derive(Clone, Copy, Debug, MallocSizeOf, Parse, PartialEq, SpecifiedValueInfo, ToCss, ToComputedValue, ToResolvedValue, ToShmem)]
|
||||
#[derive(
|
||||
Clone,
|
||||
Copy,
|
||||
Debug,
|
||||
MallocSizeOf,
|
||||
Parse,
|
||||
PartialEq,
|
||||
SpecifiedValueInfo,
|
||||
ToCss,
|
||||
ToComputedValue,
|
||||
ToResolvedValue,
|
||||
ToShmem,
|
||||
)]
|
||||
#[repr(u8)]
|
||||
pub enum PrintColorAdjust {
|
||||
/// Ignore backgrounds and darken text.
|
||||
|
|
|
|||
|
|
@ -92,11 +92,6 @@ impl Percentage {
|
|||
Number::new_with_clamping_mode(self.value, self.calc_clamping_mode)
|
||||
}
|
||||
|
||||
/// Returns whether this percentage is a `calc()` value.
|
||||
pub fn is_calc(&self) -> bool {
|
||||
self.calc_clamping_mode.is_some()
|
||||
}
|
||||
|
||||
/// Returns the calc() clamping mode for this percentage.
|
||||
pub fn calc_clamping_mode(&self) -> Option<AllowedNumericType> {
|
||||
self.calc_clamping_mode
|
||||
|
|
@ -188,6 +183,24 @@ impl ToComputedValue for Percentage {
|
|||
|
||||
impl SpecifiedValueInfo for Percentage {}
|
||||
|
||||
/// Turns the percentage into a plain float.
|
||||
pub trait ToPercentage {
|
||||
/// Returns whether this percentage used to be a calc().
|
||||
fn is_calc(&self) -> bool { false }
|
||||
/// Turns the percentage into a plain float.
|
||||
fn to_percentage(&self) -> CSSFloat;
|
||||
}
|
||||
|
||||
impl ToPercentage for Percentage {
|
||||
fn is_calc(&self) -> bool {
|
||||
self.calc_clamping_mode.is_some()
|
||||
}
|
||||
|
||||
fn to_percentage(&self) -> CSSFloat {
|
||||
self.get()
|
||||
}
|
||||
}
|
||||
|
||||
/// A wrapper of Percentage, whose value must be >= 0.
|
||||
pub type NonNegativePercentage = NonNegative<Percentage>;
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue