Introduce Svg struct in core::svg

core/src/image.rs

@@ -16,7 +16,7 @@ pub struct Image<H = Handle> {
     /// The filter method of the image.
     pub filter_method: FilterMethod,
 
-    /// The rotation to be applied to the image, from its center.
+    /// The rotation to be applied to the image; on its center.
     pub rotation: Radians,
 
     /// The opacity of the image.
@@ -26,7 +26,7 @@ pub struct Image<H = Handle> {
 
     /// If set to `true`, the image will be snapped to the pixel grid.
     ///
-    /// This can avoid graphical glitches, specially when using a
+    /// This can avoid graphical glitches, specially when using
     /// [`FilterMethod::Nearest`].
     pub snap: bool,
 }

core/src/lib.rs

@@ -70,6 +70,7 @@ pub use rotation::Rotation;
 pub use shadow::Shadow;
 pub use shell::Shell;
 pub use size::Size;
+pub use svg::Svg;
 pub use text::Text;
 pub use theme::Theme;
 pub use transformation::Transformation;

core/src/renderer/null.rs

@@ -4,8 +4,7 @@ use crate::renderer::{self, Renderer};
 use crate::svg;
 use crate::text::{self, Text};
 use crate::{
-    Background, Color, Font, Pixels, Point, Radians, Rectangle, Size,
-    Transformation,
+    Background, Color, Font, Pixels, Point, Rectangle, Size, Transformation,
 };
 
 impl Renderer for () {
@@ -192,13 +191,5 @@ impl svg::Renderer for () {
         Size::default()
     }
 
-    fn draw_svg(
-        &mut self,
-        _handle: svg::Handle,
-        _color: Option<Color>,
-        _bounds: Rectangle,
-        _rotation: Radians,
-        _opacity: f32,
-    ) {
-    }
+    fn draw_svg(&mut self, _svg: svg::Svg, _bounds: Rectangle) {}
 }

core/src/svg.rs

@@ -7,6 +7,66 @@ use std::hash::{Hash, Hasher as _};
 use std::path::PathBuf;
 use std::sync::Arc;
 
+/// A raster image that can be drawn.
+#[derive(Debug, Clone, PartialEq)]
+pub struct Svg<H = Handle> {
+    /// The handle of the [`Svg`].
+    pub handle: H,
+
+    /// The [`Color`] filter to be applied to the [`Svg`].
+    ///
+    /// If some [`Color`] is set, the whole [`Svg`] will be
+    /// painted with it—ignoring any intrinsic colors.
+    ///
+    /// This can be useful for coloring icons programmatically
+    /// (e.g. with a theme).
+    pub color: Option<Color>,
+
+    /// The rotation to be applied to the image; on its center.
+    pub rotation: Radians,
+
+    /// The opacity of the [`Svg`].
+    ///
+    /// 0 means transparent. 1 means opaque.
+    pub opacity: f32,
+}
+
+impl Svg<Handle> {
+    /// Creates a new [`Svg`] with the given handle.
+    pub fn new(handle: impl Into<Handle>) -> Self {
+        Self {
+            handle: handle.into(),
+            color: None,
+            rotation: Radians(0.0),
+            opacity: 1.0,
+        }
+    }
+
+    /// Sets the [`Color`] filter of the [`Svg`].
+    pub fn color(mut self, color: impl Into<Color>) -> Self {
+        self.color = Some(color.into());
+        self
+    }
+
+    /// Sets the rotation of the [`Svg`].
+    pub fn rotation(mut self, rotation: impl Into<Radians>) -> Self {
+        self.rotation = rotation.into();
+        self
+    }
+
+    /// Sets the opacity of the [`Svg`].
+    pub fn opacity(mut self, opacity: impl Into<f32>) -> Self {
+        self.opacity = opacity.into();
+        self
+    }
+}
+
+impl From<&Handle> for Svg {
+    fn from(handle: &Handle) -> Self {
+        Svg::new(handle.clone())
+    }
+}
+
 /// A handle of Svg data.
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Handle {
@@ -95,12 +155,5 @@ pub trait Renderer: crate::Renderer {
     fn measure_svg(&self, handle: &Handle) -> Size<u32>;
 
     /// Draws an SVG with the given [`Handle`], an optional [`Color`] filter, and inside the provided `bounds`.
-    fn draw_svg(
-        &mut self,
-        handle: Handle,
-        color: Option<Color>,
-        bounds: Rectangle,
-        rotation: Radians,
-        opacity: f32,
-    );
+    fn draw_svg(&mut self, svg: Svg, bounds: Rectangle);
 }