Cargo.toml

@@ -6,6 +6,7 @@ edition = "2024"
 [dependencies]
 eframe = "0.32"
 egui = "0.32"
+egui_extras = { version = "0.32", features = ["syntect"] }
 serde = { version = "1.0.219", features = ["derive"] }
 rfd = "0.15.4"
 toml = "0.9.2"

src/app/config.rs

@@ -65,11 +65,9 @@ impl Default for Config {
 impl Config {
     pub fn config_path() -> Option<PathBuf> {
         let config_dir = if let Some(config_dir) = dirs::config_dir() {
-            config_dir.join(format!("{}", env!("CARGO_PKG_NAME")))
+            config_dir.join(env!("CARGO_PKG_NAME"))
         } else if let Some(home_dir) = dirs::home_dir() {
-            home_dir
-                .join(".config")
-                .join(format!("{}", env!("CARGO_PKG_NAME")))
+            home_dir.join(".config").join(env!("CARGO_PKG_NAME"))
         } else {
             return None;
         };

src/main.rs

@@ -1,13 +1,21 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
 use eframe::egui;
+use std::env;
+use std::io::IsTerminal;
 
 mod app;
 mod io;
 mod ui;
-use app::{config::Config, TextEditor};
+use app::{TextEditor, config::Config};
 
 fn main() -> eframe::Result {
+    let _args: Vec<String> = env::args().collect();
+    if std::io::stdin().is_terminal() {
+        println!("This is a GUI application, are you sure you want to launch from terminal?");
+        // return Ok(());
+    }
+
     let options = eframe::NativeOptions {
         viewport: egui::ViewportBuilder::default()
             .with_min_inner_size([600.0, 400.0])

src/ui/central_panel/editor.rs

@@ -1,8 +1,76 @@
 use crate::app::TextEditor;
 use eframe::egui;
+use egui_extras::syntax_highlighting::{self, CodeTheme};
 
 use super::find_highlight;
 
+fn get_language_from_extension(file_path: Option<&std::path::Path>) -> String {
+    if let Some(path) = file_path {
+        if let Some(extension) = path.extension().and_then(|ext| ext.to_str()) {
+            match extension.to_lowercase().as_str() {
+                "rs" => "rs".to_string(),
+                "py" => "py".to_string(),
+                "js" => "js".to_string(),
+                "ts" => "ts".to_string(),
+                "tsx" => "tsx".to_string(),
+                "jsx" => "jsx".to_string(),
+                "c" => "c".to_string(),
+                "cpp" | "cc" | "cxx" => "cpp".to_string(),
+                "h" | "hpp" => "cpp".to_string(),
+                "java" => "java".to_string(),
+                "go" => "go".to_string(),
+                "php" => "php".to_string(),
+                "rb" => "rb".to_string(),
+                "cs" => "cs".to_string(),
+                "swift" => "swift".to_string(),
+                "kt" => "kt".to_string(),
+                "scala" => "scala".to_string(),
+                "sh" | "bash" | "zsh" | "fish" => "sh".to_string(),
+                "html" | "htm" => "html".to_string(),
+                "xml" => "xml".to_string(),
+                "css" => "css".to_string(),
+                "scss" | "sass" => "scss".to_string(),
+                "json" => "json".to_string(),
+                "yaml" | "yml" => "yaml".to_string(),
+                "toml" => "toml".to_string(),
+                "md" | "markdown" => "md".to_string(),
+                "sql" => "sql".to_string(),
+                "lua" => "lua".to_string(),
+                "vim" => "vim".to_string(),
+                "dockerfile" => "dockerfile".to_string(),
+                "makefile" => "makefile".to_string(),
+                _ => "txt".to_string(),
+            }
+        } else {
+            // Check filename for special cases
+            if let Some(filename) = path.file_name().and_then(|name| name.to_str()) {
+                match filename.to_lowercase().as_str() {
+                    "dockerfile" => "dockerfile".to_string(),
+                    "makefile" => "makefile".to_string(),
+                    "cargo.toml" | "pyproject.toml" => "toml".to_string(),
+                    "package.json" => "json".to_string(),
+                    _ => "txt".to_string(),
+                }
+            } else {
+                "txt".to_string()
+            }
+        }
+    } else {
+        "txt".to_string()
+    }
+}
+
+fn create_code_theme_from_visuals(visuals: &egui::Visuals, font_size: f32) -> CodeTheme {
+    // For now, just use the appropriate base theme (dark/light)
+    // The base themes should automatically work well with the system colors
+    // since egui's syntax highlighting respects the overall UI theme
+    if visuals.dark_mode {
+        CodeTheme::dark(font_size)
+    } else {
+        CodeTheme::light(font_size)
+    }
+}
+
 pub(super) fn editor_view_ui(ui: &mut egui::Ui, app: &mut TextEditor) -> egui::Response {
     let _current_match_position = app.get_current_match_position();
     let show_find = app.show_find;
@@ -96,6 +164,23 @@ pub(super) fn editor_view_ui(ui: &mut egui::Ui, app: &mut TextEditor) -> egui::R
         f32::INFINITY
     };
 
+    // Determine the language for syntax highlighting
+    let language = get_language_from_extension(active_tab.file_path.as_deref());
+    
+    // Create a code theme based on the current system theme visuals
+    let theme = create_code_theme_from_visuals(ui.visuals(), font_size);
+    
+    let mut layouter = |ui: &egui::Ui, string: &dyn egui::TextBuffer, wrap_width: f32| {
+        let text = string.as_str();
+        let mut layout_job = if language == "txt" {
+            syntax_highlighting::highlight(ui.ctx(), &ui.style().clone(), &theme, text, "")
+        } else {
+            syntax_highlighting::highlight(ui.ctx(), &ui.style().clone(), &theme, text, &language)
+        };
+        layout_job.wrap.max_width = wrap_width;
+        ui.fonts(|f| f.layout_job(layout_job))
+    };
+
     let text_edit = egui::TextEdit::multiline(&mut active_tab.content)
         .frame(false)
         .font(egui::TextStyle::Monospace)
@@ -104,6 +189,7 @@ pub(super) fn editor_view_ui(ui: &mut egui::Ui, app: &mut TextEditor) -> egui::R
         .desired_rows(0)
         .lock_focus(!show_find)
         .cursor_at_end(false)
+        .layouter(&mut layouter)
         .id(egui::Id::new("main_text_editor"));
 
     let output = if word_wrap {

src/ui/preferences_window.rs

@@ -4,8 +4,8 @@ use eframe::egui;
 pub(crate) fn preferences_window(app: &mut TextEditor, ctx: &egui::Context) {
     let visuals = &ctx.style().visuals;
     let screen_rect = ctx.screen_rect();
-    let window_width = (screen_rect.width() * 0.6).min(400.0).max(300.0);
-    let window_height = (screen_rect.height() * 0.7).min(500.0).max(250.0);
+    let window_width = (screen_rect.width() * 0.6).clamp(300.0, 400.0);
+    let window_height = (screen_rect.height() * 0.7).clamp(250.0, 500.0);
     let max_size = egui::Vec2::new(window_width, window_height);
 
     egui::Window::new("Preferences")