1  #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
 2  
 3  use eframe::egui;
 4  use egui_extras::RetainedImage;
 5  
 6  fn main() {
 7      let options = eframe::NativeOptions {
 8          initial_window_size: Some(egui::vec2(500.0, 900.0)),
 9          ..Default::default()
10      };
11      eframe::run_native(
12          "Show an image with eframe/egui",
13          options,
14          Box::new(|_cc| Box::new(MyApp::default())),
15      );
16  }
17  
18  struct MyApp {
19      image: RetainedImage,
20  }
21  
22  impl Default for MyApp {
23      fn default() -> Self {
24          Self {
25              image: RetainedImage::from_image_bytes(
26                  "rust-logo-256x256.png",
27                  include_bytes!("rust-logo-256x256.png"),
28              )
29              .unwrap(),
30          }
31      }
32  }
33  
34  impl eframe::App for MyApp {
35      fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
36          egui::CentralPanel::default().show(ctx, |ui| {
37              ui.heading("This is an image:");
38              self.image.show(ui);
39  
40              ui.heading("This is a rotated image:");
41              ui.add(
42                  egui::Image::new(self.image.texture_id(ctx), self.image.size_vec2())
43                      .rotate(45.0_f32.to_radians(), egui::Vec2::splat(0.5)),
44              );
45  
46              ui.heading("This is an image you can click:");
47              ui.add(egui::ImageButton::new(
48                  self.image.texture_id(ctx),
49                  self.image.size_vec2(),
50              ));
51          });
52      }
53  }