Add background_color to Settings

native/src/renderer.rs

@@ -21,14 +21,15 @@
 //! [`checkbox::Renderer`]: ../widget/checkbox/trait.Renderer.html
 
 mod debugger;
-#[cfg(debug_assertions)]
-mod null;
 mod windowed;
 
 pub use debugger::Debugger;
+pub use windowed::{Target, Windowed};
+
+#[cfg(debug_assertions)]
+mod null;
 #[cfg(debug_assertions)]
 pub use null::Null;
-pub use windowed::{Target, Windowed};
 
 use crate::{layout, Element};
 

native/src/renderer/windowed.rs

@@ -1,4 +1,4 @@
-use crate::MouseCursor;
+use crate::{Color, MouseCursor};
 
 use raw_window_handle::HasRawWindowHandle;
 
@@ -19,6 +19,7 @@ pub trait Windowed: super::Renderer + Sized {
     /// top of the GUI on most scenarios.
     fn draw<T: AsRef<str>>(
         &mut self,
+        clear_color: Color,
         output: &Self::Output,
         overlay: &[T],
         target: &mut Self::Target,

src/settings.rs

@@ -1,7 +1,8 @@
 //! Configure your application.
+use crate::Color;
 
 /// The settings of an application.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+#[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Settings {
     /// The [`Window`] settings.
     ///
@@ -9,6 +10,20 @@ pub struct Settings {
     ///
     /// [`Window`]: struct.Window.html
     pub window: Window,
+
+    /// The default background [`Color`] of the application
+    ///
+    /// [`Color`]: ../struct.Color.html
+    pub background_color: Color,
+}
+
+impl Default for Settings {
+    fn default() -> Settings {
+        Settings {
+            window: Window::default(),
+            background_color: Color::WHITE,
+        }
+    }
 }
 
 /// The window settings of an application.
@@ -44,6 +59,7 @@ impl From<Settings> for iced_winit::Settings {
                 decorations: settings.window.decorations,
                 platform_specific: Default::default(),
             },
+            background_color: settings.background_color,
         }
     }
 }

wgpu/src/renderer.rs

@@ -76,6 +76,7 @@ impl Renderer {
 
     fn draw<T: AsRef<str>>(
         &mut self,
+        clear_color: Color,
         (primitive, mouse_cursor): &(Primitive, MouseCursor),
         overlay: &[T],
         target: &mut Target,
@@ -97,11 +98,15 @@ impl Renderer {
                 resolve_target: None,
                 load_op: wgpu::LoadOp::Clear,
                 store_op: wgpu::StoreOp::Store,
-                clear_color: wgpu::Color {
-                    r: 1.0,
-                    g: 1.0,
-                    b: 1.0,
-                    a: 1.0,
+                clear_color: {
+                    let [r, g, b, a] = clear_color.into_linear();
+
+                    wgpu::Color {
+                        r: f64::from(r),
+                        g: f64::from(g),
+                        b: f64::from(b),
+                        a: f64::from(a),
+                    }
                 },
             }],
             depth_stencil_attachment: None,
@@ -428,11 +433,12 @@ impl Windowed for Renderer {
 
     fn draw<T: AsRef<str>>(
         &mut self,
+        clear_color: Color,
         output: &Self::Output,
         overlay: &[T],
         target: &mut Target,
     ) -> MouseCursor {
-        self.draw(output, overlay, target)
+        self.draw(clear_color, output, overlay, target)
     }
 }
 

winit/src/application.rs

@@ -279,8 +279,12 @@ pub trait Application: Sized {
                     resized = false;
                 }
 
-                let new_mouse_cursor =
-                    renderer.draw(&primitive, &debug.overlay(), &mut target);
+                let new_mouse_cursor = renderer.draw(
+                    settings.background_color,
+                    &primitive,
+                    &debug.overlay(),
+                    &mut target,
+                );
 
                 debug.render_finished();
 

winit/src/settings/mod.rs

@@ -1,4 +1,5 @@
 //! Configure your application.
+use crate::Color;
 
 #[cfg(target_os = "windows")]
 #[path = "windows.rs"]
@@ -10,12 +11,24 @@ mod platform;
 pub use platform::PlatformSpecific;
 
 /// The settings of an application.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+#[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Settings {
     /// The [`Window`] settings
     ///
     /// [`Window`]: struct.Window.html
     pub window: Window,
+
+    /// The default background color of the application
+    pub background_color: Color,
+}
+
+impl Default for Settings {
+    fn default() -> Settings {
+        Settings {
+            window: Window::default(),
+            background_color: Color::WHITE,
+        }
+    }
 }
 
 /// The window settings of an application.