Auto merge of #17508 - servo:derive-all-the-things, r=emilio

Use generics for SimpleShadow

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components/style/values/animated/effects.rs

@@ -16,6 +16,7 @@ use values::computed::effects::SimpleShadow as ComputedSimpleShadow;
 use values::computed::length::Length;
 use values::generics::effects::Filter as GenericFilter;
 use values::generics::effects::FilterList as GenericFilterList;
+use values::generics::effects::SimpleShadow as GenericSimpleShadow;
 
 /// An animated value for the `filter` property.
 pub type FilterList = GenericFilterList<Filter>;
@@ -29,21 +30,7 @@ pub type Filter = GenericFilter<Angle, Number, Length, SimpleShadow>;
 pub type Filter = GenericFilter<Angle, Number, Length, Impossible>;
 
 /// An animated value for the `drop-shadow()` filter.
-///
-/// Contrary to the canonical order from the spec, the color is serialised
-/// first, like in Gecko and Webkit.
-#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
-#[derive(Clone, Debug, PartialEq)]
-pub struct SimpleShadow {
-    /// Color.
-    pub color: IntermediateColor,
-    /// Horizontal radius.
-    pub horizontal: Length,
-    /// Vertical radius.
-    pub vertical: Length,
-    /// Blur radius.
-    pub blur: Length,
-}
+pub type SimpleShadow = GenericSimpleShadow<IntermediateColor, Length, Length>;
 
 #[cfg(feature = "gecko")]
 impl From<ComputedFilterList> for FilterList {

components/style/values/computed/effects.rs

@@ -11,6 +11,7 @@ use values::computed::color::Color;
 use values::computed::length::Length;
 use values::generics::effects::Filter as GenericFilter;
 use values::generics::effects::FilterList as GenericFilterList;
+use values::generics::effects::SimpleShadow as GenericSimpleShadow;
 
 /// A computed value for the `filter` property.
 pub type FilterList = GenericFilterList<Filter>;
@@ -24,21 +25,7 @@ pub type Filter = GenericFilter<Angle, Number, Length, SimpleShadow>;
 pub type Filter = GenericFilter<Angle, Number, Length, Impossible>;
 
 /// A computed value for the `drop-shadow()` filter.
-///
-/// Contrary to the canonical order from the spec, the color is serialised
-/// first, like in Gecko and Webkit.
-#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
-#[derive(Clone, Debug, PartialEq, ToCss)]
-pub struct SimpleShadow {
-    /// Color.
-    pub color: Color,
-    /// Horizontal radius.
-    pub horizontal: Length,
-    /// Vertical radius.
-    pub vertical: Length,
-    /// Blur radius.
-    pub blur: Length,
-}
+pub type SimpleShadow = GenericSimpleShadow<Color, Length, Length>;
 
 impl FilterList {
     /// Returns the resulting opacity of this filter pipeline.

components/style/values/generics/effects.rs

@@ -55,6 +55,23 @@ pub enum Filter<Angle, Factor, Length, DropShadow> {
     Url(SpecifiedUrl),
 }
 
+/// A generic value for the `drop-shadow()` filter and the `text-shadow` property.
+///
+/// Contrary to the canonical order from the spec, the color is serialised
+/// first, like in Gecko and Webkit.
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
+#[derive(Clone, Debug, HasViewportPercentage, PartialEq, ToCss)]
+pub struct SimpleShadow<Color, SizeLength, ShapeLength> {
+    /// Color.
+    pub color: Color,
+    /// Horizontal radius.
+    pub horizontal: SizeLength,
+    /// Vertical radius.
+    pub vertical: SizeLength,
+    /// Blur radius.
+    pub blur: ShapeLength,
+}
+
 impl<F> FilterList<F> {
     /// Returns `none`.
     #[inline]

components/style/values/specified/effects.rs

@@ -13,6 +13,7 @@ use values::computed::{Context, Number as ComputedNumber, ToComputedValue};
 use values::computed::effects::SimpleShadow as ComputedSimpleShadow;
 use values::generics::effects::Filter as GenericFilter;
 use values::generics::effects::FilterList as GenericFilterList;
+use values::generics::effects::SimpleShadow as GenericSimpleShadow;
 use values::specified::{Angle, Percentage};
 use values::specified::color::Color;
 use values::specified::length::Length;
@@ -43,21 +44,7 @@ pub enum Factor {
 }
 
 /// A specified value for the `drop-shadow()` filter.
-///
-/// Contrary to the canonical order from the spec, the color is serialised
-/// first, like in Gecko's computed values and in all Webkit's values.
-#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
-#[derive(Clone, Debug, HasViewportPercentage, PartialEq, ToCss)]
-pub struct SimpleShadow {
-    /// Color.
-    pub color: Option<Color>,
-    /// Horizontal radius.
-    pub horizontal: Length,
-    /// Vertical radius.
-    pub vertical: Length,
-    /// Blur radius.
-    pub blur: Option<Length>,
-}
+pub type SimpleShadow = GenericSimpleShadow<Option<Color>, Length, Option<Length>>;
 
 impl Parse for FilterList {
     #[inline]