Link to forgejo dep

Switch to mainline glyphon 0.5.0

Cargo.toml

@@ -6,6 +6,11 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-egui = { git = "https://github.com/emilk/egui", version = "0.25.0" }
-egui-wgpu = { git = "https://github.com/emilk/egui", version = "0.25.0" }
-glyphon = { git = "https://github.com/StratusFearMe21/glyphon" }
+egui = { version = "0.26.2", default-features = false }
+egui-wgpu = "0.26.2"
+glyphon = { git = "https://git.nations.lol/fnmain/glyphon.git" }
+
+[dev-dependencies]
+cosmic-jotdown = { path = "../cosmic-jotdown" }
+eframe = { version = "0.26.2", features = ["wgpu"] }
+env_logger = "0.11.3"

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Isaac Mills
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

examples/hello-world.rs

@@ -0,0 +1,128 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
+use std::{ops::Deref, sync::Arc};
+
+use eframe::{
+    egui::{self, Slider},
+    egui_wgpu,
+    epaint::{
+        mutex::{Mutex, RwLock},
+        Rect, Vec2,
+    },
+    CreationContext,
+};
+use egui::{Align2, Pos2};
+use egui_glyphon::{
+    glyphon::{Attrs, Family, FontSystem, Metrics, Shaping},
+    BufferWithTextArea, GlyphonRenderer, GlyphonRendererCallback,
+};
+use glyphon::{cosmic_text::Align, Buffer};
+
+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 MyApp {
+    font_system: Arc<Mutex<FontSystem>>,
+    buffers: Vec<Arc<RwLock<Buffer>>>,
+}
+
+impl Default for MyApp {
+    fn default() -> Self {
+        let mut font_system = FontSystem::new();
+        let buffers = cosmic_jotdown::jotdown_into_buffers(
+            r#"# Header
+
+Test _test_ *test* 'test' "`test`""#,
+            &mut font_system,
+            Metrics::new(30.0, 42.0),
+            f32::MAX,
+        )
+        .map(|buffer| Arc::new(RwLock::new(buffer)))
+        .collect();
+
+        Self {
+            font_system: Arc::new(Mutex::new(font_system)),
+            buffers,
+        }
+    }
+}
+
+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
+    }
+}
+
+pub fn measure_buffer(buffer: &Buffer, vb: Vec2) -> Rect {
+    let mut rtl = false;
+    let (width, total_lines) =
+        buffer
+            .layout_runs()
+            .fold((0.0, 0usize), |(width, total_lines), run| {
+                if run.rtl {
+                    rtl = true;
+                }
+                (run.line_w.max(width), total_lines + 1)
+            });
+
+    let (max_width, max_height) = buffer.size();
+
+    let size = Vec2::new(
+        if rtl { vb.x } else { width.min(max_width) },
+        (total_lines as f32 * buffer.metrics().line_height).min(max_height),
+    );
+    match buffer.lines[0].align() {
+        Some(Align::Right) | Some(Align::End) => {
+            Align2::RIGHT_TOP.align_size_within_rect(size, Rect::from_min_size(Pos2::ZERO, vb))
+        }
+        Some(Align::Center) | Some(Align::Justified) => {
+            Align2::CENTER_TOP.align_size_within_rect(size, Rect::from_min_size(Pos2::ZERO, vb))
+        }
+        Some(Align::Left) | None => Rect::from_min_size(Pos2::ZERO, size),
+    }
+}
+
+impl eframe::App for MyApp {
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        egui::CentralPanel::default().show(ctx, |ui| {
+            let mut rect = Rect::from_min_size(ui.cursor().min, Vec2::INFINITY);
+            let buffers: Vec<BufferWithTextArea> = self
+                .buffers
+                .iter()
+                .cloned()
+                .map(|buffer| {
+                    let buffer_size = measure_buffer(buffer.read().deref(), ui.max_rect().size());
+                    let this_rect = rect;
+                    rect.min.y += buffer_size.height() + 48.0;
+                    BufferWithTextArea::new(
+                        buffer,
+                        this_rect,
+                        1.0,
+                        egui_glyphon::glyphon::Color::rgb(255, 255, 255),
+                        ui.ctx(),
+                    )
+                })
+                .collect();
+            ui.painter().add(egui_wgpu::Callback::new_paint_callback(
+                ui.max_rect(),
+                GlyphonRendererCallback { buffers },
+            ));
+        });
+    }
+}

src/lib.rs

@@ -1,12 +1,12 @@
 //! This crate is for using [`glyphon`] to render advanced shaped text to the screen in an [`egui`] application
 //! Please see the example for a primer on how to use this crate
-use std::ops::{Deref, DerefMut};
+use std::ops::DerefMut;
 use std::sync::Arc;
 
 use egui::mutex::{Mutex, RwLock};
 use egui::{Pos2, Rect, Vec2};
-use egui_wgpu::renderer::ScreenDescriptor;
 use egui_wgpu::wgpu;
+use egui_wgpu::ScreenDescriptor;
 use glyphon::{
     Buffer, Color, ColorMode, FontSystem, PrepareError, RenderError, Resolution, SwashCache,
     TextArea, TextAtlas, TextBounds, TextRenderer,
@@ -15,8 +15,8 @@ use glyphon::{
 pub use glyphon;
 
 /// A text buffer with some accosiated data used to construect a [`glyphon::TextArea`]
-pub struct BufferWithTextArea<T: AsRef<Buffer> + Send + Sync> {
-    pub buffer: Arc<RwLock<T>>,
+pub struct BufferWithTextArea {
+    pub buffer: Arc<RwLock<Buffer>>,
     pub rect: Rect,
     pub scale: f32,
     pub opacity: f32,
@@ -47,9 +47,9 @@ pub fn measure_buffer(buffer: &Buffer) -> Rect {
     )
 }
 
-impl<T: AsRef<Buffer> + Send + Sync + 'static> BufferWithTextArea<T> {
+impl BufferWithTextArea {
     pub fn new(
-        buffer: Arc<RwLock<T>>,
+        buffer: Arc<RwLock<Buffer>>,
         rect: Rect,
         opacity: f32,
         default_color: Color,
@@ -77,10 +77,7 @@ pub struct GlyphonRenderer {
 
 impl GlyphonRenderer {
     /// Insert an instance of itself into the [`egui_wgpu::RenderState`]
-    pub fn insert<'a>(
-        wgpu_render_state: &'a egui_wgpu::RenderState,
-        font_system: Arc<Mutex<FontSystem>>,
-    ) {
+    pub fn insert(wgpu_render_state: &egui_wgpu::RenderState, font_system: Arc<Mutex<FontSystem>>) {
         let device = &wgpu_render_state.device;
         let queue = &wgpu_render_state.queue;
 
@@ -89,7 +86,7 @@ impl GlyphonRenderer {
             device,
             queue,
             wgpu_render_state.target_format,
-            ColorMode::Egui,
+            ColorMode::Web,
         );
         let text_renderer =
             TextRenderer::new(&mut atlas, device, wgpu::MultisampleState::default(), None);
@@ -106,12 +103,12 @@ impl GlyphonRenderer {
             });
     }
 
-    fn prepare<A: AsRef<Buffer>, T: Deref<Target = A>>(
+    fn prepare<'a>(
         &mut self,
         device: &wgpu::Device,
         queue: &wgpu::Queue,
         screen_resolution: Resolution,
-        text_areas: impl IntoIterator<Item = TextArea<A, T>>,
+        text_areas: impl IntoIterator<Item = TextArea<'a>>,
     ) -> Result<(), PrepareError> {
         self.text_renderer.prepare(
             device,
@@ -132,12 +129,12 @@ impl GlyphonRenderer {
 /// A callback which can be put into an [`egui_wgpu::renderer::Callback`].
 // And wrapped with an [`egui::PaintCallback`]. Only add one callback per individual
 // deffered viewport.
-pub struct GlyphonRendererCallback<T: AsRef<Buffer> + Send + Sync> {
+pub struct GlyphonRendererCallback {
     /// These buffers will be rendered to the screen all at the same time on the same layer.
-    pub buffers: Vec<BufferWithTextArea<T>>,
+    pub buffers: Vec<BufferWithTextArea>,
 }
 
-impl<T: AsRef<Buffer> + Send + Sync> egui_wgpu::CallbackTrait for GlyphonRendererCallback<T> {
+impl egui_wgpu::CallbackTrait for GlyphonRendererCallback {
     fn prepare(
         &self,
         device: &wgpu::Device,
@@ -148,6 +145,26 @@ impl<T: AsRef<Buffer> + Send + Sync> egui_wgpu::CallbackTrait for GlyphonRendere
     ) -> Vec<wgpu::CommandBuffer> {
         let glyphon_renderer: &mut GlyphonRenderer = resources.get_mut().unwrap();
         glyphon_renderer.atlas.trim();
+        let bufrefs: Vec<_> = self.buffers.iter().map(|b| b.buffer.read()).collect();
+        let text_areas: Vec<_> = self
+            .buffers
+            .iter()
+            .enumerate()
+            .map(|(i, b)| TextArea {
+                buffer: bufrefs.get(i).unwrap(),
+                left: b.rect.left(),
+                top: b.rect.top(),
+                scale: b.scale,
+                bounds: TextBounds {
+                    left: b.rect.left() as i32,
+                    top: b.rect.top() as i32,
+                    right: b.rect.right() as i32,
+                    bottom: b.rect.bottom() as i32,
+                },
+                default_color: b.default_color,
+                opacity: b.opacity,
+            })
+            .collect();
         glyphon_renderer
             .prepare(
                 device,
@@ -156,20 +173,7 @@ impl<T: AsRef<Buffer> + Send + Sync> egui_wgpu::CallbackTrait for GlyphonRendere
                     width: screen_descriptor.size_in_pixels[0],
                     height: screen_descriptor.size_in_pixels[1],
                 },
-                self.buffers.iter().map(|b| TextArea {
-                    buffer: b.buffer.read(),
-                    left: b.rect.left(),
-                    top: b.rect.top(),
-                    scale: b.scale,
-                    opacity: b.opacity,
-                    bounds: TextBounds {
-                        left: b.rect.left() as i32,
-                        top: b.rect.top() as i32,
-                        right: b.rect.right() as i32,
-                        bottom: b.rect.bottom() as i32,
-                    },
-                    default_color: b.default_color,
-                }),
+                text_areas,
             )
             .unwrap();
         Vec::new()