Implement button::Renderer in ggez example

examples/ggez/main.rs

@@ -2,26 +2,33 @@ mod renderer;
 mod widget;
 
 use renderer::Renderer;
-use widget::Text;
+use widget::{button, Button, Column, Text};
 
 use ggez;
 use ggez::event;
 use ggez::graphics;
+use ggez::input::mouse;
 
 use iced::Interface;
 
 pub fn main() -> ggez::GameResult {
     let cb = ggez::ContextBuilder::new("iced", "ggez");
     let (ctx, event_loop) = &mut cb.build()?;
-    let state = &mut Game::new()?;
+    let state = &mut Game::new(ctx)?;
     event::run(ctx, event_loop, state)
 }
 
-struct Game {}
+struct Game {
+    spritesheet: graphics::Image,
+    button: button::State,
+}
 
 impl Game {
-    fn new() -> ggez::GameResult<Game> {
-        Ok(Game {})
+    fn new(context: &mut ggez::Context) -> ggez::GameResult<Game> {
+        Ok(Game {
+            spritesheet: graphics::Image::new(context, "/ui.png").unwrap(),
+            button: button::State::new(),
+        })
     }
 }
 
@@ -33,17 +40,50 @@ impl event::EventHandler for Game {
     fn draw(&mut self, context: &mut ggez::Context) -> ggez::GameResult {
         graphics::clear(context, [0.1, 0.2, 0.3, 1.0].into());
 
-        {
-            let renderer = &mut Renderer { context };
-            let ui: Interface<(), Renderer> =
-                Interface::compute(Text::new("Hello, iced!").into(), renderer);
+        let screen = graphics::screen_coordinates(context);
 
-            let mouse_cursor = ui.draw(renderer, iced::Point::new(0.0, 0.0));
+        let cursor = {
+            let hello = Text::new("Hello, iced!")
+                .horizontal_alignment(iced::text::HorizontalAlignment::Center);
+
+            let button = Button::new(&mut self.button, "Press me!").width(200);
+
+            let content = Column::new()
+                .width(screen.w as u32)
+                .height(screen.h as u32)
+                .align_items(iced::Align::Center)
+                .justify_content(iced::Justify::Center)
+                .spacing(20)
+                .push(hello)
+                .push(button);
+
+            let renderer =
+                &mut Renderer::new(context, self.spritesheet.clone());
+
+            let ui: Interface<(), Renderer> =
+                Interface::compute(content.into(), renderer);
+
+            let cursor = ui.draw(renderer, iced::Point::new(0.0, 0.0));
 
             renderer.flush();
-        }
+
+            cursor
+        };
+
+        mouse::set_cursor_type(context, into_cursor_type(cursor));
 
         graphics::present(context)?;
         Ok(())
     }
 }
+
+fn into_cursor_type(cursor: iced::MouseCursor) -> mouse::MouseCursor {
+    match cursor {
+        iced::MouseCursor::OutOfBounds => mouse::MouseCursor::Default,
+        iced::MouseCursor::Idle => mouse::MouseCursor::Default,
+        iced::MouseCursor::Pointer => mouse::MouseCursor::Hand,
+        iced::MouseCursor::Working => mouse::MouseCursor::Progress,
+        iced::MouseCursor::Grab => mouse::MouseCursor::Grab,
+        iced::MouseCursor::Grabbing => mouse::MouseCursor::Grabbing,
+    }
+}