Add example

Cargo.lock

@@ -159,6 +159,54 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anstream"
+version = "0.6.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e2e1ebcb11de5c03c67de28a7df593d32191b44939c482e97702baaaa6ab6a5"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2faccea4cc4ab4a667ce676a30e8ec13922a692c99bb8f5b11f1502c72e04220"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c75ac65da39e5fe5ab759307499ddad880d724eed2f6ce5b5e8a26f4f387928c"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e28923312444cdd728e4738b3f9c9cac739500909bb3d3c94b43551b16517648"
+dependencies = [
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cd54b81ec8d6180e24654d0b371ad22fc3dd083b6ff8ba325b72e00c87660a7"
+dependencies = [
+ "anstyle",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "arboard"
 version = "3.3.0"
@@ -694,6 +742,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
+[[package]]
+name = "colorchoice"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
+
 [[package]]
 name = "com"
 version = "0.6.0"
@@ -936,6 +990,7 @@ dependencies = [
  "objc",
  "parking_lot",
  "percent-encoding",
+ "pollster",
  "raw-window-handle 0.5.2",
  "raw-window-handle 0.6.0",
  "static_assertions",
@@ -944,6 +999,7 @@ dependencies = [
  "wasm-bindgen-futures",
  "web-sys",
  "web-time",
+ "wgpu",
  "winapi",
  "winit",
 ]
@@ -967,6 +1023,7 @@ dependencies = [
  "eframe",
  "egui",
  "egui-wgpu",
+ "env_logger",
  "glyphon",
 ]
 
@@ -1048,6 +1105,29 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "env_filter"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a009aa4810eb158359dda09d0c87378e4bbb89b5a801f016885a4707ba24f7ea"
+dependencies = [
+ "log",
+ "regex",
+]
+
+[[package]]
+name = "env_logger"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05e7cf40684ae96ade6232ed84582f40ce0a66efcd43a5117aef610534f8e0b8"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "env_filter",
+ "humantime",
+ "log",
+]
+
 [[package]]
 name = "epaint"
 version = "0.25.0"
@@ -1557,6 +1637,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
 [[package]]
 name = "icrate"
 version = "0.0.4"
@@ -2173,6 +2259,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "pollster"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22686f4785f02a4fcc856d3b3bb19bf6c8160d103f7a99cc258bddd0251dc7f2"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
@@ -2919,6 +3011,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "utf8parse"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
+
 [[package]]
 name = "version_check"
 version = "0.9.4"

Cargo.toml

@@ -11,4 +11,5 @@ egui-wgpu = { git = "https://github.com/emilk/egui" }
 glyphon = { git = "https://github.com/StratusFearMe21/glyphon" }
 
 [dev-dependencies]
-eframe = { git = "https://github.com/emilk/egui" }
+eframe = { git = "https://github.com/emilk/egui", features = ["wgpu"] }
+env_logger = "0.11.1"

examples/hello-world.rs

@@ -0,0 +1,121 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
+use std::{
+    ops::{Deref, DerefMut},
+    sync::Arc,
+};
+
+use eframe::{
+    egui::{self, Slider},
+    egui_wgpu,
+    epaint::{
+        mutex::{Mutex, RwLock},
+        Rect, Vec2,
+    },
+    CreationContext,
+};
+use egui_glyphon::{
+    glyphon::{Attrs, Family, FontSystem, Metrics, Shaping},
+    BufferWithTextArea, GlyphonRenderer, GlyphonRendererCallback,
+};
+
+fn main() -> Result<(), eframe::Error> {
+    env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
+    let options = eframe::NativeOptions {
+        viewport: egui::ViewportBuilder::default().with_inner_size([320.0, 240.0]),
+        ..Default::default()
+    };
+    eframe::run_native(
+        "My egui App",
+        options,
+        Box::new(|cc| Box::new(MyApp::new(cc))),
+    )
+}
+
+struct Buffer(egui_glyphon::glyphon::Buffer);
+
+impl AsRef<egui_glyphon::glyphon::Buffer> for Buffer {
+    fn as_ref(&self) -> &egui_glyphon::glyphon::Buffer {
+        &self.0
+    }
+}
+
+impl Deref for Buffer {
+    type Target = egui_glyphon::glyphon::Buffer;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Buffer {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+struct MyApp {
+    font_system: Arc<Mutex<FontSystem>>,
+    size: f32,
+    buffer: Arc<RwLock<Buffer>>,
+}
+
+impl Default for MyApp {
+    fn default() -> Self {
+        let mut font_system = FontSystem::new();
+        let mut buffer = Buffer(egui_glyphon::glyphon::Buffer::new(
+            &mut font_system,
+            Metrics::new(30.0, 42.0),
+        ));
+
+        buffer.set_size(&mut font_system, 16.0, 9.0);
+        buffer.set_text(&mut font_system, "<== Hello world! ==> 👋\nThis is rendered with 🦅 glyphon 🦁\nThe text below should be partially clipped.\na b c d e f g h i j k l m n o p q r s t u v w x y z", Attrs::new().family(Family::SansSerif), Shaping::Advanced);
+        buffer.shape_until_scroll(&mut font_system);
+        Self {
+            font_system: Arc::new(Mutex::new(font_system)),
+            buffer: Arc::new(RwLock::new(buffer)),
+            size: 35.0,
+        }
+    }
+}
+
+impl MyApp {
+    fn new(cc: &CreationContext<'_>) -> Self {
+        let app = Self::default();
+
+        if let Some(ref wgpu) = cc.wgpu_render_state {
+            GlyphonRenderer::insert(wgpu, Arc::clone(&app.font_system));
+        }
+
+        app
+    }
+}
+
+impl eframe::App for MyApp {
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        let size = Vec2::new(16.0 * self.size, 9.0 * self.size);
+
+        {
+            let mut font_system = self.font_system.lock();
+            let mut buffer = self.buffer.write();
+            buffer.set_metrics(&mut font_system, Metrics::new(self.size, self.size));
+            buffer.set_size(&mut font_system, size.x, size.y);
+            buffer.shape_until_scroll(&mut font_system);
+        }
+
+        egui::CentralPanel::default().show(ctx, |ui| {
+            ui.add(Slider::new(&mut self.size, 0.1..=67.5));
+            let rect = Rect::from_min_size(ui.cursor().min, size);
+            let buffers: Vec<BufferWithTextArea<Buffer>> = vec![BufferWithTextArea::new(
+                Arc::clone(&self.buffer),
+                rect,
+                1.0,
+                egui_glyphon::glyphon::Color::rgb(255, 255, 255),
+                ui.ctx(),
+            )];
+            ui.painter().add(egui_wgpu::Callback::new_paint_callback(
+                ui.max_rect(),
+                GlyphonRendererCallback { buffers },
+            ));
+        });
+    }
+}