vendor

egui/examples/retained_image/Cargo.toml

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+[package]
+name = "retained_image"
+version = "0.1.0"
+authors = ["Emil Ernerfeldt <emil.ernerfeldt@gmail.com>"]
+license = "MIT OR Apache-2.0"
+edition = "2021"
+rust-version = "1.65"
+publish = false
+
+
+[dependencies]
+eframe = { path = "../../crates/eframe", features = [
+    "__screenshot", # __screenshot is so we can dump a screenshot using EFRAME_SCREENSHOT_TO
+] }
+egui_extras = { path = "../../crates/egui_extras", features = ["image"] }
+image = { version = "0.24", default-features = false, features = ["png"] }

egui/examples/retained_image/README.md

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+Example how to show an image with eframe/egui.
+
+```sh
+cargo run -p retained_image
+```
+
+![](screenshot.png)

egui/examples/retained_image/src/main.rs

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+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
+use eframe::egui;
+use egui_extras::RetainedImage;
+
+fn main() -> Result<(), eframe::Error> {
+    let options = eframe::NativeOptions {
+        initial_window_size: Some(egui::vec2(300.0, 900.0)),
+        ..Default::default()
+    };
+
+    eframe::run_native(
+        "Show an image with eframe/egui",
+        options,
+        Box::new(|_cc| Box::new(MyApp::default())),
+    )
+}
+
+struct MyApp {
+    image: RetainedImage,
+    tint: egui::Color32,
+}
+
+impl Default for MyApp {
+    fn default() -> Self {
+        Self {
+            image: RetainedImage::from_image_bytes(
+                "rust-logo-256x256.png",
+                include_bytes!("rust-logo-256x256.png"),
+            )
+            .unwrap(),
+            tint: egui::Color32::from_rgb(255, 0, 255),
+        }
+    }
+}
+
+impl eframe::App for MyApp {
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        egui::CentralPanel::default().show(ctx, |ui| {
+            ui.heading("This is an image:");
+            self.image.show(ui);
+
+            ui.heading("This is a rotated image with a tint:");
+            ui.add(
+                egui::Image::new(self.image.texture_id(ctx), self.image.size_vec2())
+                    .rotate(45.0_f32.to_radians(), egui::Vec2::splat(0.5))
+                    .tint(self.tint),
+            );
+
+            ui.horizontal(|ui| {
+                ui.label("Tint:");
+                egui::color_picker::color_edit_button_srgba(
+                    ui,
+                    &mut self.tint,
+                    egui::color_picker::Alpha::BlendOrAdditive,
+                );
+            });
+
+            ui.heading("This is an image you can click:");
+            ui.add(egui::ImageButton::new(
+                self.image.texture_id(ctx),
+                self.image.size_vec2(),
+            ));
+        });
+    }
+}

egui/examples/retained_image/src/rust-logo-license.txt

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+Rust logo by Mozilla, from https://github.com/rust-lang/rust-artwork