Implement theme styling for Canvas

examples/bezier_tool/src/main.rs

@@ -71,7 +71,7 @@ mod bezier {
     use iced::{
         canvas::event::{self, Event},
         canvas::{self, Canvas, Cursor, Frame, Geometry, Path, Stroke},
-        mouse, Element, Length, Point, Rectangle,
+        mouse, Element, Length, Point, Rectangle, Theme,
     };
 
     #[derive(Default)]
@@ -158,7 +158,12 @@ mod bezier {
             }
         }
 
-        fn draw(&self, bounds: Rectangle, cursor: Cursor) -> Vec<Geometry> {
+        fn draw(
+            &self,
+            _theme: &Theme,
+            bounds: Rectangle,
+            cursor: Cursor,
+        ) -> Vec<Geometry> {
             let content =
                 self.state.cache.draw(bounds.size(), |frame: &mut Frame| {
                     Curve::draw_all(self.curves, frame);

examples/clock/src/main.rs

@@ -81,7 +81,12 @@ impl Application for Clock {
 }
 
 impl<Message> canvas::Program<Message> for Clock {
-    fn draw(&self, bounds: Rectangle, _cursor: Cursor) -> Vec<Geometry> {
+    fn draw(
+        &self,
+        _theme: &Theme,
+        bounds: Rectangle,
+        _cursor: Cursor,
+    ) -> Vec<Geometry> {
         let clock = self.clock.draw(bounds.size(), |frame| {
             let center = frame.center();
             let radius = frame.width().min(frame.height()) / 2.0;

examples/color_palette/src/main.rs

@@ -236,7 +236,12 @@ impl Theme {
 }
 
 impl<Message> canvas::Program<Message> for Theme {
-    fn draw(&self, bounds: Rectangle, _cursor: Cursor) -> Vec<Geometry> {
+    fn draw(
+        &self,
+        _theme: &iced::Theme,
+        bounds: Rectangle,
+        _cursor: Cursor,
+    ) -> Vec<Geometry> {
         let theme = self.canvas_cache.draw(bounds.size(), |frame| {
             self.draw(frame);
         });

examples/game_of_life/src/main.rs

@@ -163,7 +163,7 @@ mod grid {
         alignment,
         canvas::event::{self, Event},
         canvas::{self, Cache, Canvas, Cursor, Frame, Geometry, Path, Text},
-        mouse, Color, Element, Length, Point, Rectangle, Size, Vector,
+        mouse, Color, Element, Length, Point, Rectangle, Size, Theme, Vector,
     };
     use rustc_hash::{FxHashMap, FxHashSet};
     use std::future::Future;
@@ -445,7 +445,12 @@ mod grid {
             }
         }
 
-        fn draw(&self, bounds: Rectangle, cursor: Cursor) -> Vec<Geometry> {
+        fn draw(
+            &self,
+            _theme: &Theme,
+            bounds: Rectangle,
+            cursor: Cursor,
+        ) -> Vec<Geometry> {
             let center = Vector::new(bounds.width / 2.0, bounds.height / 2.0);
 
             let life = self.life_cache.draw(bounds.size(), |frame| {

examples/pure/game_of_life/src/main.rs

@@ -3,6 +3,8 @@
 mod preset;
 
 use grid::Grid;
+use preset::Preset;
+
 use iced::executor;
 use iced::pure::{
     button, checkbox, column, container, pick_list, row, slider, text,
@@ -12,7 +14,6 @@ use iced::theme::{self, Theme};
 use iced::time;
 use iced::window;
 use iced::{Alignment, Command, Length, Settings, Subscription};
-use preset::Preset;
 use std::time::{Duration, Instant};
 
 pub fn main() -> iced::Result {
@@ -216,7 +217,7 @@ mod grid {
     };
     use iced::pure::Element;
     use iced::{
-        alignment, mouse, Color, Length, Point, Rectangle, Size, Vector,
+        alignment, mouse, Color, Length, Point, Rectangle, Size, Theme, Vector,
     };
     use rustc_hash::{FxHashMap, FxHashSet};
     use std::future::Future;
@@ -525,6 +526,7 @@ mod grid {
         fn draw(
             &self,
             _interaction: &Interaction,
+            _theme: &Theme,
             bounds: Rectangle,
             cursor: Cursor,
         ) -> Vec<Geometry> {

examples/solar_system/src/main.rs

@@ -135,6 +135,7 @@ impl State {
 impl<Message> canvas::Program<Message> for State {
     fn draw(
         &self,
+        _theme: &Theme,
         bounds: Rectangle,
         _cursor: Cursor,
     ) -> Vec<canvas::Geometry> {