From ef380acf2d192ac45a2cc7ebe00b3247ef8e5d6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Bourdeauducq?= <sb@m-labs.hk>
Date: Thu, 5 Sep 2024 18:10:28 +0800
Subject: [PATCH] code editor

---
 Cargo.lock  | 250 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 Cargo.toml  |   1 +
 src/main.rs |  44 +++++----
 3 files changed, 278 insertions(+), 17 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index cdddd75..3bdbfea 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -23,6 +23,10 @@ name = "accesskit"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "74a4b14f3d99c1255dcba8f45621ab1a2e7540a0009652d33989005a4d0bfc6b"
+dependencies = [
+ "enumn",
+ "serde",
+]
 
 [[package]]
 name = "accesskit_consumer"
@@ -110,6 +114,7 @@ dependencies = [
  "cfg-if",
  "getrandom",
  "once_cell",
+ "serde",
  "version_check",
  "zerocopy",
 ]
@@ -442,6 +447,21 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
+[[package]]
+name = "bincode"
+version = "1.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.5.3"
@@ -656,6 +676,7 @@ name = "cells"
 version = "0.1.0"
 dependencies = [
  "eframe",
+ "egui_extras",
 ]
 
 [[package]]
@@ -834,6 +855,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96a6ac251f4a2aca6b3f91340350eab87ae57c3f127ffeb585e92bd336717991"
 
+[[package]]
+name = "deranged"
+version = "0.3.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b42b6fa04a440b495c8b04d0e71b707c585f83cb9cb28cf8cd0d976c315e31b4"
+dependencies = [
+ "powerfmt",
+]
+
 [[package]]
 name = "derivative"
 version = "2.2.0"
@@ -893,6 +923,7 @@ checksum = "2e6b451ff1143f6de0f33fc7f1b68fecfd2c7de06e104de96c4514de3f5396f8"
 dependencies = [
  "bytemuck",
  "emath",
+ "serde",
 ]
 
 [[package]]
@@ -942,6 +973,7 @@ dependencies = [
  "epaint",
  "log",
  "nohash-hasher",
+ "serde",
 ]
 
 [[package]]
@@ -981,6 +1013,21 @@ dependencies = [
  "winit",
 ]
 
+[[package]]
+name = "egui_extras"
+version = "0.28.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bb783d9fa348f69ed5c340aa25af78b5472043090e8b809040e30960cc2a746"
+dependencies = [
+ "ahash",
+ "egui",
+ "enum-map",
+ "log",
+ "mime_guess2",
+ "serde",
+ "syntect",
+]
+
 [[package]]
 name = "egui_glow"
 version = "0.28.1"
@@ -1005,6 +1052,28 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0a6a21708405ea88f63d8309650b4d77431f4bc28fb9d8e6f77d3963b51249e6"
 dependencies = [
  "bytemuck",
+ "serde",
+]
+
+[[package]]
+name = "enum-map"
+version = "2.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6866f3bfdf8207509a033af1a75a7b08abda06bbaaeae6669323fd5a097df2e9"
+dependencies = [
+ "enum-map-derive",
+ "serde",
+]
+
+[[package]]
+name = "enum-map-derive"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f282cfdfe92516eb26c2af8589c274c7c17681f5ecc03c18255fe741c6aa64eb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
 ]
 
 [[package]]
@@ -1028,6 +1097,17 @@ dependencies = [
  "syn 2.0.77",
 ]
 
+[[package]]
+name = "enumn"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f9ed6b3789237c8a0c1c505af1c7eb2c560df6186f01b098c3a1064ea532f38"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.77",
+]
+
 [[package]]
 name = "epaint"
 version = "0.28.1"
@@ -1042,6 +1122,7 @@ dependencies = [
  "log",
  "nohash-hasher",
  "parking_lot",
+ "serde",
 ]
 
 [[package]]
@@ -1104,6 +1185,16 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "fancy-regex"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b95f7c0680e4142284cf8b22c14a476e87d61b004a3a0861872b32ef7ead40a2"
+dependencies = [
+ "bit-set",
+ "regex",
+]
+
 [[package]]
 name = "fastrand"
 version = "1.9.0"
@@ -1138,6 +1229,12 @@ dependencies = [
  "miniz_oxide 0.8.0",
 ]
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "foreign-types"
 version = "0.5.0"
@@ -1534,6 +1631,12 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -1628,6 +1731,12 @@ dependencies = [
  "redox_syscall 0.4.1",
 ]
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.3.8"
@@ -1719,6 +1828,22 @@ dependencies = [
  "paste",
 ]
 
+[[package]]
+name = "mime"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
+[[package]]
+name = "mime_guess2"
+version = "2.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25a3333bb1609500601edc766a39b4c1772874a4ce26022f4d866854dc020c41"
+dependencies = [
+ "mime",
+ "unicase",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.7.4"
@@ -1808,6 +1933,12 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451"
 
+[[package]]
+name = "num-conv"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -2092,6 +2223,19 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
 
+[[package]]
+name = "plist"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42cf17e9a1800f5f396bc67d193dc9411b59012a5876445ef450d449881e1016"
+dependencies = [
+ "base64",
+ "indexmap",
+ "quick-xml 0.32.0",
+ "serde",
+ "time",
+]
+
 [[package]]
 name = "png"
 version = "0.17.13"
@@ -2136,6 +2280,12 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.20"
@@ -2185,6 +2335,15 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "43d84d1d7a6ac92673717f9f6d1518374ef257669c24ebc5ac25d5033828be58"
 
+[[package]]
+name = "quick-xml"
+version = "0.32.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d3a6e5838b60e0e8fa7a43f22ade549a37d61f8bdbe636d0d7816191de969c2"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quick-xml"
 version = "0.34.0"
@@ -2340,6 +2499,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -2394,6 +2559,18 @@ dependencies = [
  "syn 2.0.77",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.127"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8043c06d9f82bd7271361ed64f415fe5e12a77fdb52e573e7f06a516dea329ad"
+dependencies = [
+ "itoa",
+ "memchr",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "serde_repr"
 version = "0.1.19"
@@ -2584,6 +2761,28 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syntect"
+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "874dcfa363995604333cf947ae9f751ca3af4522c60886774c4963943b4746b1"
+dependencies = [
+ "bincode",
+ "bitflags 1.3.2",
+ "fancy-regex",
+ "flate2",
+ "fnv",
+ "once_cell",
+ "plist",
+ "regex-syntax",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "thiserror",
+ "walkdir",
+ "yaml-rust",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.12.0"
@@ -2626,6 +2825,37 @@ dependencies = [
  "syn 2.0.77",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
+dependencies = [
+ "deranged",
+ "itoa",
+ "num-conv",
+ "powerfmt",
+ "serde",
+ "time-core",
+ "time-macros",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
+
+[[package]]
+name = "time-macros"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f252a68540fde3a3877aeea552b832b40ab9a69e318efd078774a01ddee1ccf"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
 [[package]]
 name = "tiny-skia"
 version = "0.11.4"
@@ -2757,6 +2987,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "unicase"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7d2d4dafb69621809a81864c9c1b864479e1235c0dd4e199924b9742439ed89"
+dependencies = [
+ "version_check",
+]
+
 [[package]]
 name = "unicode-bidi"
 version = "0.3.15"
@@ -3020,7 +3259,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d7b56f89937f1cf2ee1f1259cf2936a17a1f45d8f0aa1019fae6d470d304cfa6"
 dependencies = [
  "proc-macro2",
- "quick-xml",
+ "quick-xml 0.34.0",
  "quote",
 ]
 
@@ -3621,6 +3860,15 @@ version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "539a77ee7c0de333dcc6da69b177380a0b81e0dacfa4f7344c465a36871ee601"
 
+[[package]]
+name = "yaml-rust"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
+dependencies = [
+ "linked-hash-map",
+]
+
 [[package]]
 name = "zbus"
 version = "3.15.2"
diff --git a/Cargo.toml b/Cargo.toml
index 22b5028..9c2de37 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,3 +7,4 @@ edition = "2021"
 
 [dependencies]
 eframe = "0.28"
+egui_extras = { version = "0.28", features = ["syntect"]}
diff --git a/src/main.rs b/src/main.rs
index 4257cf4..ec0c72d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,27 +2,39 @@ use eframe::egui;
 
 fn main() -> eframe::Result {
     let options = eframe::NativeOptions {
-        viewport: egui::ViewportBuilder::default().with_inner_size([320.0, 240.0]),
+        viewport: egui::ViewportBuilder::default().with_inner_size([1024.0, 768.0]),
         ..Default::default()
     };
 
-    // Our application state:
-    let mut name = "Arthur".to_owned();
-    let mut age = 42;
+    let mut code = String::new();
 
-    eframe::run_simple_native("My egui App", options, move |ctx, _frame| {
+    eframe::run_simple_native("Cells", options, move |ctx, _frame| {
         egui::CentralPanel::default().show(ctx, |ui| {
-            ui.heading("My egui Application");
-            ui.horizontal(|ui| {
-                let name_label = ui.label("Your name: ");
-                ui.text_edit_singleline(&mut name)
-                    .labelled_by(name_label.id);
-            });
-            ui.add(egui::Slider::new(&mut age, 0..=120).text("age"));
-            if ui.button("Increment").clicked() {
-                age += 1;
-            }
-            ui.label(format!("Hello '{name}', age {age}"));
+            let theme = egui_extras::syntax_highlighting::CodeTheme::from_memory(ui.ctx());
+            let mut layouter = |ui: &egui::Ui, string: &str, wrap_width: f32| {
+                let mut layout_job =
+                    egui_extras::syntax_highlighting::highlight(ui.ctx(), &theme, string, "Python");
+                layout_job.wrap.max_width = wrap_width;
+                layout_job.sections = layout_job
+                    .sections
+                    .iter()
+                    .map(|layout_section| {
+                        let mut section = layout_section.clone();
+                        section.format.font_id = egui::FontId::monospace(16.0);
+                        section
+                    })
+                    .collect();
+                ui.fonts(|f| f.layout_job(layout_job))
+            };
+            ui.add(
+                egui::TextEdit::multiline(&mut code)
+                    .code_editor()
+                    .desired_rows(4)
+                    .lock_focus(true)
+                    .desired_width(f32::INFINITY)
+                    .layouter(&mut layouter)
+                    .font(egui::FontId::monospace(16.0)),
+            );
         });
     })
 }