Wire up per corner radii for quad

Still need to expose this in the styling layer and allow images
to have per corner radii.

crates/gpui/examples/quad.rs

@@ -0,0 +1,120 @@
+use gpui::{color::Color, geometry::rect::RectF, AnyElement, App, Element, Entity, Quad, View};
+use log::LevelFilter;
+use pathfinder_geometry::vector::vec2f;
+use simplelog::SimpleLogger;
+
+fn main() {
+    SimpleLogger::init(LevelFilter::Info, Default::default()).expect("could not initialize logger");
+
+    App::new(()).unwrap().run(|cx| {
+        cx.platform().activate(true);
+        cx.add_window(Default::default(), |_| QuadView);
+    });
+}
+
+struct QuadView;
+
+impl Entity for QuadView {
+    type Event = ();
+}
+
+impl View for QuadView {
+    fn ui_name() -> &'static str {
+        "QuadView"
+    }
+
+    fn render(&mut self, _: &mut gpui::ViewContext<Self>) -> AnyElement<QuadView> {
+        QuadElement.into_any()
+    }
+}
+
+struct QuadElement;
+
+impl<V: View> gpui::Element<V> for QuadElement {
+    type LayoutState = ();
+
+    type PaintState = ();
+
+    fn layout(
+        &mut self,
+        constraint: gpui::SizeConstraint,
+        _: &mut V,
+        _: &mut gpui::LayoutContext<V>,
+    ) -> (gpui::geometry::vector::Vector2F, Self::LayoutState) {
+        (constraint.max, ())
+    }
+
+    fn paint(
+        &mut self,
+        scene: &mut gpui::SceneBuilder,
+        _: pathfinder_geometry::rect::RectF,
+        _: pathfinder_geometry::rect::RectF,
+        _: &mut Self::LayoutState,
+        _: &mut V,
+        _: &mut gpui::PaintContext<V>,
+    ) -> Self::PaintState {
+        scene.push_quad(Quad {
+            bounds: RectF::new(vec2f(100., 100.), vec2f(100., 100.)),
+            background: Some(Color::red()),
+            border: Default::default(),
+            corner_radii: gpui::scene::CornerRadii {
+                top_left: 20.,
+                ..Default::default()
+            },
+        });
+
+        scene.push_quad(Quad {
+            bounds: RectF::new(vec2f(200., 100.), vec2f(100., 100.)),
+            background: Some(Color::green()),
+            border: Default::default(),
+            corner_radii: gpui::scene::CornerRadii {
+                top_right: 20.,
+                ..Default::default()
+            },
+        });
+
+        scene.push_quad(Quad {
+            bounds: RectF::new(vec2f(100., 200.), vec2f(100., 100.)),
+            background: Some(Color::blue()),
+            border: Default::default(),
+            corner_radii: gpui::scene::CornerRadii {
+                bottom_left: 20.,
+                ..Default::default()
+            },
+        });
+
+        scene.push_quad(Quad {
+            bounds: RectF::new(vec2f(200., 200.), vec2f(100., 100.)),
+            background: Some(Color::yellow()),
+            border: Default::default(),
+            corner_radii: gpui::scene::CornerRadii {
+                bottom_right: 20.,
+                ..Default::default()
+            },
+        });
+    }
+
+    fn rect_for_text_range(
+        &self,
+        _: std::ops::Range<usize>,
+        _: pathfinder_geometry::rect::RectF,
+        _: pathfinder_geometry::rect::RectF,
+        _: &Self::LayoutState,
+        _: &Self::PaintState,
+        _: &V,
+        _: &gpui::ViewContext<V>,
+    ) -> Option<pathfinder_geometry::rect::RectF> {
+        unimplemented!()
+    }
+
+    fn debug(
+        &self,
+        _: pathfinder_geometry::rect::RectF,
+        _: &Self::LayoutState,
+        _: &Self::PaintState,
+        _: &V,
+        _: &gpui::ViewContext<V>,
+    ) -> serde_json::Value {
+        unimplemented!()
+    }
+}