style: Support shape-image: <image>

MozReview-Commit-ID: GSCZIMEpCS2

components/style/gecko/conversions.rs

@@ -596,7 +596,7 @@ pub mod basic_shape {
     use gecko_bindings::sugar::ns_style_coord::{CoordDataMut, CoordDataValue};
     use std::borrow::Borrow;
     use values::computed::ComputedUrl;
-    use values::computed::basic_shape::{BasicShape, ShapeRadius};
+    use values::computed::basic_shape::{BasicShape, ClippingShape, FloatAreaShape, ShapeRadius};
     use values::computed::border::{BorderCornerRadius, BorderRadius};
     use values::computed::length::LengthOrPercentage;
     use values::computed::position;
@@ -606,32 +606,68 @@ pub mod basic_shape {
     use values::generics::border::BorderRadius as GenericBorderRadius;
     use values::generics::rect::Rect;
 
-    impl<'a, ReferenceBox> From<&'a StyleShapeSource> for ShapeSource<BasicShape, ReferenceBox, ComputedUrl>
-    where
-        ReferenceBox: From<StyleGeometryBox>,
+    impl StyleShapeSource {
+        /// Convert StyleShapeSource to ShapeSource except URL and Image
+        /// types.
+        fn into_shape_source<ReferenceBox, ImageOrUrl>(
+            &self
+        ) -> Option<ShapeSource<BasicShape, ReferenceBox, ImageOrUrl>>
+        where
+            ReferenceBox: From<StyleGeometryBox>
+        {
+            match self.mType {
+                StyleShapeSourceType::None => Some(ShapeSource::None),
+                StyleShapeSourceType::Box => Some(ShapeSource::Box(self.mReferenceBox.into())),
+                StyleShapeSourceType::Shape => {
+                    let other_shape = unsafe { &*self.mBasicShape.mPtr };
+                    let shape = other_shape.into();
+                    let reference_box = if self.mReferenceBox == StyleGeometryBox::NoBox {
+                        None
+                    } else {
+                        Some(self.mReferenceBox.into())
+                    };
+                    Some(ShapeSource::Shape(shape, reference_box))
+                },
+                StyleShapeSourceType::URL | StyleShapeSourceType::Image => None,
+            }
+        }
+    }
+
+    impl<'a> From<&'a StyleShapeSource> for ClippingShape
     {
         fn from(other: &'a StyleShapeSource) -> Self {
             match other.mType {
-                StyleShapeSourceType::None => ShapeSource::None,
-                StyleShapeSourceType::Box => ShapeSource::Box(other.mReferenceBox.into()),
                 StyleShapeSourceType::URL => {
                     unsafe {
                         let shape_image = &*other.mShapeImage.mPtr;
                         let other_url = &(**shape_image.__bindgen_anon_1.mURLValue.as_ref());
                         let url = ComputedUrl::from_url_value_data(&other_url._base).unwrap();
-                        ShapeSource::Url(url)
+                        ShapeSource::ImageOrUrl(url)
                     }
                 },
-                StyleShapeSourceType::Shape => {
-                    let other_shape = unsafe { &*other.mBasicShape.mPtr };
-                    let shape = other_shape.into();
-                    let reference_box = if other.mReferenceBox == StyleGeometryBox::NoBox {
-                        None
-                    } else {
-                        Some(other.mReferenceBox.into())
-                    };
-                    ShapeSource::Shape(shape, reference_box)
+                StyleShapeSourceType::Image => {
+                    unreachable!("ClippingShape doesn't support Image!");
                 }
+                _ => other.into_shape_source().expect("Couldn't convert to StyleSource!")
+            }
+        }
+    }
+
+    impl<'a> From<&'a StyleShapeSource> for FloatAreaShape
+    {
+        fn from(other: &'a StyleShapeSource) -> Self {
+            match other.mType {
+                StyleShapeSourceType::URL => {
+                    unreachable!("FloatAreaShape doesn't support URL!");
+                },
+                StyleShapeSourceType::Image => {
+                    unsafe {
+                        let shape_image = &*other.mShapeImage.mPtr;
+                        let image = shape_image.into_image().expect("Cannot convert to Image");
+                        ShapeSource::ImageOrUrl(image)
+                    }
+                }
+                _ => other.into_shape_source().expect("Couldn't convert to StyleSource!")
             }
         }
     }

components/style/properties/gecko.mako.rs

@@ -5008,18 +5008,32 @@ fn static_assert() {
         use gecko::conversions::basic_shape::set_corners_from_radius;
         use gecko::values::GeckoStyleCoordConvertible;
         use values::generics::basic_shape::{BasicShape, FillRule, ShapeSource};
+
         let ref mut ${ident} = self.gecko.${gecko_ffi_name};
+
         // clean up existing struct
         unsafe { Gecko_DestroyShapeSource(${ident}) };
-
         ${ident}.mType = StyleShapeSourceType::None;
 
         match v {
-            ShapeSource::Url(ref url) => {
+            % if ident == "clip_path":
+            ShapeSource::ImageOrUrl(ref url) => {
                 unsafe {
                     bindings::Gecko_StyleShapeSource_SetURLValue(${ident}, url.for_ffi())
                 }
             }
+            % elif ident == "shape_outside":
+            ShapeSource::ImageOrUrl(image) => {
+                unsafe {
+                    bindings::Gecko_NewShapeImage(${ident});
+                    let style_image = &mut *${ident}.mShapeImage.mPtr;
+                    style_image.set(image);
+                }
+            }
+            % else:
+               <% raise Exception("Unknown property: %s" % ident) %>
+            }
+            % endif
             ShapeSource::None => {} // don't change the type
             ShapeSource::Box(reference) => {
                 ${ident}.mReferenceBox = reference.into();

components/style/values/computed/basic_shape.rs

@@ -9,7 +9,7 @@
 
 use std::fmt;
 use style_traits::ToCss;
-use values::computed::{LengthOrPercentage, ComputedUrl};
+use values::computed::{LengthOrPercentage, ComputedUrl, Image};
 use values::generics::basic_shape::{BasicShape as GenericBasicShape};
 use values::generics::basic_shape::{Circle as GenericCircle, ClippingShape as GenericClippingShape};
 use values::generics::basic_shape::{Ellipse as GenericEllipse, FloatAreaShape as GenericFloatAreaShape};
@@ -19,7 +19,7 @@ use values::generics::basic_shape::{InsetRect as GenericInsetRect, ShapeRadius a
 pub type ClippingShape = GenericClippingShape<BasicShape, ComputedUrl>;
 
 /// A computed float area shape.
-pub type FloatAreaShape = GenericFloatAreaShape<BasicShape, ComputedUrl>;
+pub type FloatAreaShape = GenericFloatAreaShape<BasicShape, Image>;
 
 /// A computed basic shape.
 pub type BasicShape = GenericBasicShape<LengthOrPercentage, LengthOrPercentage, LengthOrPercentage>;

components/style/values/generics/basic_shape.rs

@@ -27,7 +27,7 @@ pub enum GeometryBox {
 }
 
 /// A float area shape, for `shape-outside`.
-pub type FloatAreaShape<BasicShape, Url> = ShapeSource<BasicShape, ShapeBox, Url>;
+pub type FloatAreaShape<BasicShape, Image> = ShapeSource<BasicShape, ShapeBox, Image>;
 
 // https://drafts.csswg.org/css-shapes-1/#typedef-shape-box
 define_css_keyword_enum!(ShapeBox:
@@ -41,9 +41,9 @@ add_impls_for_keyword_enum!(ShapeBox);
 /// A shape source, for some reference box.
 #[allow(missing_docs)]
 #[derive(Animate, Clone, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
-pub enum ShapeSource<BasicShape, ReferenceBox, Url> {
+pub enum ShapeSource<BasicShape, ReferenceBox, ImageOrUrl> {
     #[animation(error)]
-    Url(Url),
+    ImageOrUrl(ImageOrUrl),
     Shape(
         BasicShape,
         #[animation(constant)]

components/style/values/specified/basic_shape.rs

@@ -22,6 +22,7 @@ use values::generics::basic_shape::{Polygon as GenericPolygon, ShapeRadius as Ge
 use values::generics::rect::Rect;
 use values::specified::LengthOrPercentage;
 use values::specified::border::BorderRadius;
+use values::specified::image::Image;
 use values::specified::position::{HorizontalPosition, Position, PositionComponent, Side, VerticalPosition};
 use values::specified::url::SpecifiedUrl;
 
@@ -29,7 +30,7 @@ use values::specified::url::SpecifiedUrl;
 pub type ClippingShape = GenericClippingShape<BasicShape, SpecifiedUrl>;
 
 /// A specified float area shape.
-pub type FloatAreaShape = GenericFloatAreaShape<BasicShape, SpecifiedUrl>;
+pub type FloatAreaShape = GenericFloatAreaShape<BasicShape, Image>;
 
 /// A specified basic shape.
 pub type BasicShape = GenericBasicShape<HorizontalPosition, VerticalPosition, LengthOrPercentage>;
@@ -49,14 +50,18 @@ pub type ShapeRadius = GenericShapeRadius<LengthOrPercentage>;
 /// The specified value of `Polygon`
 pub type Polygon = GenericPolygon<LengthOrPercentage>;
 
-impl<ReferenceBox: Parse> Parse for ShapeSource<BasicShape, ReferenceBox, SpecifiedUrl> {
+impl<ReferenceBox, ImageOrUrl> Parse for ShapeSource<BasicShape, ReferenceBox, ImageOrUrl>
+where
+    ReferenceBox: Parse,
+    ImageOrUrl: Parse,
+{
     fn parse<'i, 't>(context: &ParserContext, input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i>> {
         if input.try(|i| i.expect_ident_matching("none")).is_ok() {
             return Ok(ShapeSource::None)
         }
 
-        if let Ok(url) = input.try(|i| SpecifiedUrl::parse(context, i)) {
-            return Ok(ShapeSource::Url(url))
+        if let Ok(image_or_url) = input.try(|i| ImageOrUrl::parse(context, i)) {
+            return Ok(ShapeSource::ImageOrUrl(image_or_url))
         }
 
         fn parse_component<U: Parse>(context: &ParserContext, input: &mut Parser,