Make the color a valid property type

This replaces Property<u32> with Property<Color>

api/sixtyfps-node/native/lib.rs

@@ -150,6 +150,7 @@ fn to_js_value<'cx>(
             }
             js_object.as_value(cx)
         }
+        Value::Color(c) => JsNumber::new(cx, c.as_argb_encoded()).as_value(cx),
     })
 }
 

api/sixtyfps-rs/lib.rs

@@ -83,6 +83,7 @@ pub mod re_exports {
     pub use sixtyfps_corelib::layout::{
         solve_grid_layout, Constraint, GridLayoutCellData, GridLayoutData,
     };
+    pub use sixtyfps_corelib::Color;
     pub use sixtyfps_corelib::ComponentVTable_static;
     pub use sixtyfps_corelib::EvaluationContext;
     pub use sixtyfps_corelib::Resource;

sixtyfps_compiler/generator/cpp.rs

@@ -140,7 +140,7 @@ impl CppType for Type {
             Type::Float32 => Some("float".to_owned()),
             Type::Int32 => Some("int".to_owned()),
             Type::String => Some("sixtyfps::SharedString".to_owned()),
-            Type::Color => Some("uint32_t".to_owned()),
+            Type::Color => Some("sixtyfps::internal::Color".to_owned()),
             Type::Bool => Some("bool".to_owned()),
             Type::Model => Some("std::shared_ptr<sixtyfps::Model>".to_owned()),
             Type::Object(o) => {
@@ -646,6 +646,14 @@ fn compile_expression(e: &crate::expression_tree::Expression, component: &Rc<Com
                     format!("std::make_shared<sixtyfps::IntModel>({})", f)
                 }
                 (Type::Array(_), Type::Model) => f,
+                (Type::Float32, Type::Color) => {
+                    let val = f.parse::<u32>().unwrap();
+                    let red = (val >> 16) as u8;
+                    let green = (val >> 8) as u8;
+                    let blue = val as u8;
+                    let alpha = (val >> 24) as u8;
+                    format!("sixtyfps::internal::Color{{{}, {}, {}, {}}}", red, green, blue, alpha)
+                }
                 _ => f,
             }
         }

sixtyfps_compiler/generator/rust.rs

@@ -18,7 +18,7 @@ fn rust_type(
         Type::Int32 => Ok(quote!(i32)),
         Type::Float32 => Ok(quote!(f32)),
         Type::String => Ok(quote!(sixtyfps::re_exports::SharedString)),
-        Type::Color => Ok(quote!(u32)),
+        Type::Color => Ok(quote!(sixtyfps::re_exports::Color)),
         Type::Bool => Ok(quote!(bool)),
         Type::Object(o) => {
             let elem = o.values().map(|v| rust_type(v, span)).collect::<Result<Vec<_>, _>>()?;
@@ -459,6 +459,9 @@ fn compile_expression(e: &Expression, component: &Rc<Component>) -> TokenStream
                 }
                 (Type::Float32, Type::Model) | (Type::Int32, Type::Model) => quote!((0..#f as i32)),
                 (Type::Array(_), Type::Model) => quote!(#f.iter().cloned()),
+                (Type::Float32, Type::Color) => {
+                    quote!(sixtyfps::re_exports::Color::from(#f as u32))
+                }
                 _ => f,
             }
         }

sixtyfps_runtime/corelib/abi/datastructures.rs

@@ -146,7 +146,7 @@ impl Default for LayoutInfo {
 }
 
 /// RGBA color
-#[derive(Copy, Clone, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug, Default)]
 #[repr(C)]
 pub struct Color {
     red: u8,
@@ -190,12 +190,26 @@ impl Color {
         (self.red, self.green, self.blue, self.alpha)
     }
 
+    /// Returns `(alpha, red, green, blue)` encoded as u32
+    pub fn as_argb_encoded(&self) -> u32 {
+        ((self.red as u32) << 16)
+            | ((self.green as u32) << 8)
+            | (self.blue as u32)
+            | ((self.alpha as u32) << 24)
+    }
+
     /// A constant for the black color
     pub const BLACK: Color = Color::from_rgb(0, 0, 0);
     /// A constant for the white color
     pub const WHITE: Color = Color::from_rgb(255, 255, 255);
 }
 
+impl From<u32> for Color {
+    fn from(encoded: u32) -> Self {
+        Color::from_argb_encoded(encoded)
+    }
+}
+
 /// A resource is a reference to binary data, for example images. They can be accessible on the file
 /// system or embedded in the resulting binary. Or they might be URLs to a web server and a downloaded
 /// is necessary before they can be used.

sixtyfps_runtime/corelib/abi/primitives.rs

@@ -30,8 +30,7 @@ use corelib_macro::*;
 #[pin]
 /// The implementation of the `Rectangle` element
 pub struct Rectangle {
-    /// FIXME: make it a color
-    pub color: Property<u32>,
+    pub color: Property<Color>,
     pub x: Property<f32>,
     pub y: Property<f32>,
     pub width: Property<f32>,
@@ -60,9 +59,7 @@ impl Item for Rectangle {
                 y: Self::field_offsets().y.apply_pin(self).get(context),
                 width,
                 height,
-                color: Color::from_argb_encoded(
-                    Self::field_offsets().color.apply_pin(self).get(context),
-                ),
+                color: Self::field_offsets().color.apply_pin(self).get(context),
             }
         } else {
             RenderingPrimitive::NoContents
@@ -153,7 +150,7 @@ pub struct Text {
     pub text: Property<SharedString>,
     pub font_family: Property<SharedString>,
     pub font_pixel_size: Property<f32>,
-    pub color: Property<u32>,
+    pub color: Property<Color>,
     pub x: Property<f32>,
     pub y: Property<f32>,
     pub cached_rendering_data: CachedRenderingData,
@@ -179,9 +176,7 @@ impl Item for Text {
             text: Self::field_offsets().text.apply_pin(self).get(context),
             font_family: Self::field_offsets().font_family.apply_pin(self).get(context),
             font_pixel_size: Self::field_offsets().font_pixel_size.apply_pin(self).get(context),
-            color: Color::from_argb_encoded(
-                Self::field_offsets().color.apply_pin(self).get(context),
-            ),
+            color: Self::field_offsets().color.apply_pin(self).get(context),
         }
     }
 

sixtyfps_runtime/corelib/lib.rs

@@ -45,6 +45,9 @@ pub use abi::properties::{EvaluationContext, Property};
 #[doc(inline)]
 pub use abi::signals::Signal;
 
+#[doc(inline)]
+pub use abi::datastructures::Color;
+
 /// Type alias to the commonly use `Pin<VRef<ComponentVTable>>>`
 pub type ComponentRefPin<'a> = core::pin::Pin<abi::datastructures::ComponentRef<'a>>;
 

sixtyfps_runtime/corelib/rtti.rs

@@ -12,7 +12,18 @@ macro_rules! declare_ValueType {
         pub trait ValueType: 'static $(+ TryInto<$ty> + TryFrom<$ty>)* {}
     };
 }
-declare_ValueType![bool, u32, u64, i32, i64, f32, f64, crate::SharedString, crate::Resource];
+declare_ValueType![
+    bool,
+    u32,
+    u64,
+    i32,
+    i64,
+    f32,
+    f64,
+    crate::SharedString,
+    crate::Resource,
+    crate::Color
+];
 
 pub trait PropertyInfo<Item, Value> {
     fn get(&self, item: Pin<&Item>, context: &crate::EvaluationContext) -> Result<Value, ()>;

sixtyfps_runtime/interpreter/dynamic_component.rs

@@ -13,7 +13,7 @@ use sixtyfps_corelib::abi::primitives::PropertyAnimation;
 use sixtyfps_corelib::abi::slice::Slice;
 use sixtyfps_corelib::rtti::PropertyInfo;
 use sixtyfps_corelib::ComponentRefPin;
-use sixtyfps_corelib::{rtti, EvaluationContext, Property, SharedString, Signal};
+use sixtyfps_corelib::{rtti, Color, EvaluationContext, Property, SharedString, Signal};
 use std::collections::HashMap;
 use std::{pin::Pin, rc::Rc};
 
@@ -269,7 +269,7 @@ fn generate_component(
             Type::Float32 => animated_property_info::<f32>(),
             Type::Int32 => animated_property_info::<i32>(),
             Type::String => property_info::<SharedString>(),
-            Type::Color => property_info::<u32>(),
+            Type::Color => property_info::<Color>(),
             Type::Resource => property_info::<Resource>(),
             Type::Bool => property_info::<bool>(),
             Type::Signal => {

sixtyfps_runtime/interpreter/eval.rs

@@ -4,8 +4,8 @@ use sixtyfps_compilerlib::expression_tree::{Expression, NamedReference};
 use sixtyfps_compilerlib::{object_tree::ElementRc, typeregister::Type};
 use sixtyfps_corelib as corelib;
 use sixtyfps_corelib::{
-    abi::datastructures::ItemRef, abi::primitives::PropertyAnimation, EvaluationContext, Resource,
-    SharedString,
+    abi::datastructures::ItemRef, abi::primitives::PropertyAnimation, Color, EvaluationContext,
+    Resource, SharedString,
 };
 use std::{collections::HashMap, rc::Rc};
 
@@ -62,6 +62,8 @@ pub enum Value {
     Array(Vec<Value>),
     /// An object
     Object(HashMap<String, Value>),
+    /// A color
+    Color(Color),
 }
 
 impl Default for Value {
@@ -105,6 +107,7 @@ declare_value_conversion!(String => [SharedString] );
 declare_value_conversion!(Bool => [bool] );
 declare_value_conversion!(Resource => [Resource] );
 declare_value_conversion!(Object => [HashMap<String, Value>] );
+declare_value_conversion!(Color => [Color] );
 
 /// Evaluate an expression and return a Value as the result of this expression
 pub fn eval_expression(
@@ -186,6 +189,7 @@ pub fn eval_expression(
                 (Value::Number(n), Type::String) => {
                     Value::String(SharedString::from(format!("{}", n).as_str()))
                 }
+                (Value::Number(n), Type::Color) => Value::Color(Color::from(n as u32)),
                 (v, _) => v,
             }
         }