Draw caret and handle click.

assets/theme.txt

@@ -37,9 +37,6 @@ italic
 ``keyword
 #CB7832
 
-``keyword
-#CB7832
-
 ``regex
 #A4C260
 

src/app/app_state.rs

@@ -1,42 +1,51 @@
-use std::rc::Rc;
-use std::sync::Arc;
-use std::boxed::Box;
 use crate::app::{UpdateResult, WindowCanvas};
-use crate::ui::*;
-use crate::ui::caret::Caret;
+use crate::config::Config;
 use crate::file::*;
 use crate::file::editor_file::EditorFile;
 use crate::renderer::Renderer;
+use crate::ui::*;
+use crate::ui::caret::Caret;
+use crate::ui::menu_bar::MenuBar;
+use sdl2::rect::Point;
+use std::boxed::Box;
+use std::rc::Rc;
+use std::sync::Arc;
 
 pub struct AppState {
-    pub files: Vec<EditorFile>,
-    pub current_file: i16,
+    menu_bar: MenuBar,
+    files: Vec<EditorFile>,
+    current_file: usize,
     caret: Caret,
 }
 
 impl AppState {
-    pub fn new() -> Self {
+    pub fn new(config: &Config) -> Self {
         Self {
+            menu_bar: MenuBar::new(),
             files: vec![],
-            current_file: -1,
-            caret: Caret::new(),
+            current_file: 0,
+            caret: Caret::new(config),
         }
     }
 
-    pub fn open_file(&mut self, file_path: String) {
+    pub fn open_file(&mut self, file_path: String, config: &Config) {
         use std::fs::read_to_string;
         if let Ok(buffer) = read_to_string(&file_path) {
-            println!("read: {}\n{}", file_path, buffer);
-            let file = EditorFile::new(file_path.clone(), buffer);
-            self.current_file = self.files.len() as i16;
+            let file = EditorFile::new(file_path.clone(), buffer, config);
+            self.current_file = self.files.len();
             self.files.push(file);
         };
     }
+
+    pub fn caret(&mut self) -> &mut Caret {
+        &mut self.caret
+    }
 }
 
 impl Render for AppState {
     fn render(&mut self, canvas: &mut WindowCanvas, renderer: &mut Renderer) -> UpdateResult {
-        if let Some(file) = self.files.get_mut(self.current_file as usize) {
+        self.menu_bar.render(canvas, renderer);
+        if let Some(file) = self.files.get_mut(self.current_file) {
             file.render(canvas, renderer);
         }
         self.caret.render(canvas, renderer);
@@ -46,10 +55,34 @@ impl Render for AppState {
 
 impl Update for AppState {
     fn update(&mut self, ticks: i32) -> UpdateResult {
-        if let Some(file) = self.files.get_mut(self.current_file as usize) {
+        self.menu_bar.update(ticks);
+        if let Some(file) = self.files.get_mut(self.current_file) {
             file.update(ticks);
         }
         self.caret.update(ticks);
         UpdateResult::NoOp
     }
 }
+
+impl ClickHandler for AppState {
+    fn on_left_click(&mut self, point: &Point, config: &Config) -> UpdateResult {
+        if self.menu_bar.is_left_click_target(point) {
+            return self.menu_bar.on_left_click(point, config);
+        }
+        if let Some(current_file) = self.files.get_mut(self.current_file) {
+            if current_file.is_left_click_target(point) {
+                match current_file.on_left_click(point, config) {
+                    UpdateResult::MoveCaret(rect) => {
+                        self.caret.move_caret(Point::new(rect.x(), rect.y()));
+                    }
+                    _ => (),
+                };
+            }
+        }
+        UpdateResult::NoOp
+    }
+
+    fn is_left_click_target(&self, _point: &Point) -> bool {
+        true
+    }
+}

src/app/config.rs

@@ -1,29 +0,0 @@
-use crate::themes::Theme;
-
-#[derive(Debug, Clone)]
-pub struct EditorConfig {
-    pub character_size: u16,
-    pub font_path: String,
-}
-
-#[derive(Debug, Clone)]
-pub struct Config {
-    pub width: u32,
-    pub height: u32,
-    pub editor_config: EditorConfig,
-    pub theme: Theme,
-}
-
-impl Config {
-    pub fn new() -> Self {
-        Self {
-            width: 1024,
-            height: 860,
-            editor_config: EditorConfig {
-                character_size: 24,
-                font_path: "./assets/fonts/hinted-ElaineSans-Medium.ttf".to_string(),
-            },
-            theme: Theme::load("default".to_string()),
-        }
-    }
-}

src/app/mod.rs

@@ -1,30 +1,31 @@
-pub mod app_state;
-pub mod config;
-
+use crate::app::app_state::AppState;
+use crate::config::Config;
+use crate::renderer::Renderer;
+use crate::themes::*;
+use crate::ui::*;
+use sdl2::{Sdl, TimerSubsystem};
 use sdl2::event::Event;
+use sdl2::EventPump;
 use sdl2::hint;
+use sdl2::mouse::MouseButton;
 use sdl2::pixels::Color;
+use sdl2::rect::{Point, Rect};
 use sdl2::render::Canvas;
 use sdl2::video::Window;
-use sdl2::EventPump;
-use sdl2::{Sdl, TimerSubsystem};
-
 use std::thread::sleep;
 use std::time::Duration;
 
-pub type WindowCanvas = Canvas<Window>;
+pub mod app_state;
 
-use crate::app::app_state::AppState;
-use crate::app::config::Config;
-use crate::themes::Theme;
-use crate::ui::*;
-use crate::renderer::Renderer;
+pub type WindowCanvas = Canvas<Window>;
 
 #[derive(PartialEq, Clone, Debug)]
 pub enum UpdateResult {
     NoOp,
     Stop,
     RefreshPositions,
+    MouseLeftClicked(Point),
+    MoveCaret(Rect),
 }
 
 pub enum Task {
@@ -36,6 +37,7 @@ pub struct Application {
     sdl_context: Sdl,
     canvas: WindowCanvas,
     tasks: Vec<Task>,
+    clear_color: Color,
 }
 
 impl Application {
@@ -49,7 +51,7 @@ impl Application {
         hint::set("SDL_HINT_VIDEO_ALLOW_SCREENSAVER", "1");
         let video_subsystem = sdl_context.video().unwrap();
         let window = video_subsystem
-            .window("Editor", config.width, config.height)
+            .window("Editor", config.width(), config.height())
             .position_centered()
             .opengl()
             .build()
@@ -58,10 +60,11 @@ impl Application {
         let canvas = window.into_canvas().accelerated().build().unwrap();
 
         Self {
-            config,
             sdl_context,
             canvas,
             tasks: vec![],
+            clear_color: config.theme().background().into(),
+            config,
         }
     }
 
@@ -75,25 +78,25 @@ impl Application {
         let font_context = sdl2::ttf::init().unwrap();
         let texture_creator = self.canvas.texture_creator();
         let sleep_time = Duration::new(0, 1_000_000_000u32 / 60);
-        let mut app_state = AppState::new();
-        let mut renderer = Renderer::new(
-            self.config.clone(),
-            &font_context,
-            &texture_creator
-        );
+        let mut app_state = AppState::new(&self.config);
+        let mut renderer = Renderer::new(self.config.clone(), &font_context, &texture_creator);
 
         'running: loop {
             match self.handle_events(&mut event_pump) {
                 UpdateResult::Stop => break 'running,
                 UpdateResult::RefreshPositions => (),
                 UpdateResult::NoOp => (),
+                UpdateResult::MoveCaret(_) => (),
+                UpdateResult::MouseLeftClicked(point) => {
+                    app_state.on_left_click(&point, renderer.config());
+                }
             }
             for task in self.tasks.iter() {
                 match task {
                     Task::OpenFile { file_path } => {
                         use crate::file::editor_file::*;
-                        app_state.open_file(file_path.clone());
-                    },
+                        app_state.open_file(file_path.clone(), renderer.config());
+                    }
                 }
             }
             self.tasks.clear();
@@ -117,7 +120,7 @@ impl Application {
     }
 
     fn clear(&mut self) {
-        self.canvas.set_draw_color(Color::RGB(255, 255, 255));
+        self.canvas.set_draw_color(self.clear_color.clone());
         self.canvas.clear();
     }
 
@@ -125,6 +128,12 @@ impl Application {
         for event in event_pump.poll_iter() {
             match event {
                 Event::Quit { .. } => return UpdateResult::Stop,
+                Event::MouseButtonUp {
+                    mouse_btn, x, y, ..
+                } => match mouse_btn {
+                    MouseButton::Left => return UpdateResult::MouseLeftClicked(Point::new(x, y)),
+                    _ => (),
+                },
                 _ => (),
             }
         }

src/config/creator.rs

@@ -0,0 +1,35 @@
+use crate::config::directories::*;
+use crate::themes::config_creator;
+use dirs;
+use std::fs;
+use std::path;
+
+pub fn create() {
+    if !themes_dir().exists() {
+        fs::create_dir_all(&themes_dir())
+            .unwrap_or_else(|_| panic!("Cannot create themes config directory"));
+    }
+
+    if !fonts_dir().exists() {
+        fs::create_dir_all(&fonts_dir())
+            .unwrap_or_else(|_| panic!("Cannot create fonts config directory"));
+        write_default_fonts();
+    }
+}
+
+fn write_default_fonts() {
+    {
+        let mut default_font_path = fonts_dir();
+        default_font_path.push("DejaVuSansMono.ttf");
+        let contents = include_bytes!("../../assets/fonts/DejaVuSansMono.ttf");
+        fs::write(default_font_path, contents.to_vec())
+            .unwrap_or_else(|_| panic!("Cannot write default font file!"));
+    }
+    {
+        let mut default_font_path = fonts_dir();
+        default_font_path.push("ElaineSans-Medium.ttf");
+        let contents = include_bytes!("../../assets/fonts/ElaineSans-Medium.ttf");
+        fs::write(default_font_path, contents.to_vec())
+            .unwrap_or_else(|_| panic!("Cannot write default font file!"));
+    }
+}

src/config/directories.rs

@@ -0,0 +1,22 @@
+use dirs;
+use std::path::PathBuf;
+
+pub fn themes_dir() -> PathBuf {
+    let mut themes_dir = config_dir();
+    themes_dir.push("themes");
+    themes_dir
+}
+
+pub fn fonts_dir() -> PathBuf {
+    let mut fonts_dir = config_dir();
+    fonts_dir.push("fonts");
+    fonts_dir
+}
+
+pub fn config_dir() -> PathBuf {
+    let home_dir = dirs::config_dir().unwrap();
+
+    let mut config_dir = home_dir.clone();
+    config_dir.push("rider");
+    config_dir
+}

src/config/mod.rs

@@ -0,0 +1,99 @@
+use crate::themes::Theme;
+use dirs;
+use std::fs;
+
+mod creator;
+pub mod directories;
+
+#[derive(Debug, Clone)]
+pub struct EditorConfig {
+    character_size: u16,
+    font_path: String,
+    current_theme: String,
+    margin_left: u16,
+    margin_top: u16,
+}
+
+impl EditorConfig {
+    pub fn new() -> Self {
+        let mut default_font_path = directories::fonts_dir();
+        default_font_path.push("DejaVuSansMono.ttf");
+        Self {
+            character_size: 24,
+            font_path: default_font_path.to_str().unwrap().to_string(),
+            current_theme: "railscasts".to_string(),
+            margin_left: 10,
+            margin_top: 10,
+        }
+    }
+
+    pub fn character_size(&self) -> u16 {
+        self.character_size
+    }
+
+    pub fn font_path(&self) -> &String {
+        &self.font_path
+    }
+
+    pub fn current_theme(&self) -> &String {
+        &self.current_theme
+    }
+
+    pub fn margin_left(&self) -> u16 {
+        self.margin_left
+    }
+
+    pub fn margin_top(&self) -> u16 {
+        self.margin_top
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Config {
+    width: u32,
+    height: u32,
+    menu_height: u16,
+    editor_config: EditorConfig,
+    theme: Theme,
+}
+
+impl Config {
+    pub fn new() -> Self {
+        creator::create();
+        let editor_config = EditorConfig::new();
+        Self {
+            width: 1024,
+            height: 860,
+            menu_height: 60,
+            theme: Theme::load(editor_config.current_theme().clone()),
+            editor_config,
+        }
+    }
+    pub fn width(&self) -> u32 {
+        self.width
+    }
+
+    pub fn height(&self) -> u32 {
+        self.height
+    }
+
+    pub fn editor_config(&self) -> &EditorConfig {
+        &self.editor_config
+    }
+
+    pub fn theme(&self) -> &Theme {
+        &self.theme
+    }
+
+    pub fn menu_height(&self) -> u16 {
+        self.menu_height
+    }
+
+    pub fn editor_top_margin(&self) -> i32 {
+        (self.menu_height() as i32) + (self.editor_config().margin_top() as i32)
+    }
+
+    pub fn editor_left_margin(&self) -> i32 {
+        self.editor_config().margin_left() as i32
+    }
+}

src/file/editor_file.rs

@@ -1,26 +1,34 @@
-use sdl2::rect::Rect;
+use crate::app::{UpdateResult, WindowCanvas};
+use crate::config::Config;
 use crate::file::editor_file_section::EditorFileSection;
 use crate::renderer::Renderer;
-use crate::app::{UpdateResult, WindowCanvas};
 use crate::ui::*;
+use sdl2::rect::{Point, Rect};
 
 #[derive(Clone)]
 pub struct EditorFile {
-    pub path: String,
-    pub sections: Vec<EditorFileSection>,
+    path: String,
+    sections: Vec<EditorFileSection>,
+    render_position: Rect,
 }
 
 impl EditorFile {
-    pub fn new(path: String, buffer: String) -> Self {
-        let section = EditorFileSection::new(buffer);
+    pub fn new(path: String, buffer: String, config: &Config) -> Self {
+        let section = EditorFileSection::new(buffer, config);
         let sections = vec![section];
-        Self { path, sections }
+        let x = config.editor_left_margin();
+        let y = config.editor_top_margin();
+        Self {
+            path,
+            sections,
+            render_position: Rect::new(x, y, 0, 0),
+        }
     }
 
-    fn refresh_characters_position(&mut self) {
-        let mut current: Rect = Rect::new(0, 0, 0, 0);
+    fn refresh_characters_position(&mut self, config: &Config) {
+        let mut current: Rect = self.render_position.clone();
         for section in self.sections.iter_mut() {
-            section.update_positions(&mut current);
+            section.update_positions(&mut current, config);
         }
     }
 }
@@ -32,7 +40,7 @@ impl Render for EditorFile {
             res = section.render(canvas, renderer);
         }
         if res == UpdateResult::RefreshPositions {
-            self.refresh_characters_position();
+            self.refresh_characters_position(renderer.config());
             for section in self.sections.iter_mut() {
                 section.render(canvas, renderer);
             }
@@ -50,3 +58,23 @@ impl Update for EditorFile {
         result
     }
 }
+
+impl ClickHandler for EditorFile {
+    fn on_left_click(&mut self, point: &Point, config: &Config) -> UpdateResult {
+        for section in self.sections.iter_mut() {
+            if section.is_left_click_target(point) {
+                return section.on_left_click(point, config);
+            }
+        }
+        UpdateResult::NoOp
+    }
+
+    fn is_left_click_target(&self, point: &Point) -> bool {
+        for section in self.sections.iter() {
+            if section.is_left_click_target(point) {
+                return true;
+            }
+        }
+        false
+    }
+}

src/file/editor_file_section.rs

@@ -1,34 +1,34 @@
-use sdl2::rect::Rect;
-use crate::lexer::Language;
-use crate::app::UpdateResult;
-use crate::app::WindowCanvas;
-use crate::renderer::Renderer;
+use crate::app::{UpdateResult, WindowCanvas};
+use crate::config::Config;
 use crate::file::editor_file_token::EditorFileToken;
+use crate::lexer::Language;
+use crate::renderer::Renderer;
 use crate::ui::*;
+use sdl2::rect::{Point, Rect};
 
 #[derive(Clone)]
 pub struct EditorFileSection {
-    pub tokens: Vec<EditorFileToken>,
-    pub language: Language,
+    tokens: Vec<EditorFileToken>,
+    language: Language,
 }
 
 impl EditorFileSection {
-    pub fn new(buffer: String) -> Self {
+    pub fn new(buffer: String, config: &Config) -> Self {
         use crate::lexer;
         let lexer_tokens = lexer::parse(buffer.clone(), Language::PlainText);
 
         let mut tokens: Vec<EditorFileToken> = vec![];
         for token_type in lexer_tokens {
-            let token = EditorFileToken::new(token_type);
+            let token = EditorFileToken::new(token_type, config);
             tokens.push(token.clone());
         }
         let language = Language::PlainText;
         Self { tokens, language }
     }
 
-    pub fn update_positions(&mut self, current: &mut Rect) {
+    pub fn update_positions(&mut self, current: &mut Rect, config: &Config) {
         for c in self.tokens.iter_mut() {
-            c.update_position(current);
+            c.update_position(current, config);
         }
     }
 }
@@ -55,3 +55,23 @@ impl Update for EditorFileSection {
         result
     }
 }
+
+impl ClickHandler for EditorFileSection {
+    fn on_left_click(&mut self, point: &Point, config: &Config) -> UpdateResult {
+        for token in self.tokens.iter_mut() {
+            if token.is_left_click_target(point) {
+                return token.on_left_click(point, config);
+            }
+        }
+        UpdateResult::NoOp
+    }
+
+    fn is_left_click_target(&self, point: &Point) -> bool {
+        for token in self.tokens.iter() {
+            if token.is_left_click_target(point) {
+                return true;
+            }
+        }
+        false
+    }
+}

src/file/editor_file_token.rs

@@ -1,22 +1,15 @@
-use std::rc::Rc;
-use sdl2::rect::Rect;
-use sdl2::render::Texture;
-use sdl2::ttf::Font;
-use sdl2::pixels::Color;
-
-use crate::lexer::TokenType;
-use crate::renderer::Renderer;
-use crate::renderer::managers::TextDetails;
 use crate::app::{UpdateResult, WindowCanvas};
-use crate::renderer::managers::FontDetails;
+use crate::config::Config;
+use crate::lexer::TokenType;
+use crate::renderer::managers::{FontDetails, TextDetails};
+use crate::renderer::Renderer;
 use crate::ui::*;
 use crate::ui::text_character::*;
-
-#[derive(Clone)]
-pub struct TextCharacterMeasure {
-    source: Rect,
-    dest: Rect,
-}
+use sdl2::pixels::Color;
+use sdl2::rect::{Point, Rect};
+use sdl2::render::Texture;
+use sdl2::ttf::Font;
+use std::rc::Rc;
 
 #[derive(Clone)]
 pub struct EditorFileToken {
@@ -24,36 +17,36 @@ pub struct EditorFileToken {
     token_type: TokenType,
 }
 
-impl Into<Color> for TokenType {
-    fn into(self) -> Color {
-        match &self {
-            &TokenType::Whitespace { .. } => Color::RGBA(220, 220, 220, 90),
-            _ => Color::RGBA(0, 0, 0, 0),
-        }
-    }
-}
-
 impl EditorFileToken {
-    pub fn new(token_type: TokenType) -> Self {
+    pub fn new(token_type: TokenType, _config: &Config) -> Self {
         Self {
             characters: vec![],
             token_type,
         }
     }
 
-    pub fn update_position(&mut self, current: &mut Rect) {
+    pub fn update_position(&mut self, current: &mut Rect, config: &Config) {
         for text_character in self.characters.iter_mut() {
-            text_character.update_position(current);
+            text_character.update_position(current, config);
         }
     }
 
     fn update_view(&mut self, renderer: &mut Renderer) -> UpdateResult {
+        let config = renderer.config().theme().code_highlighting();
+        let color: Color = match self.token_type {
+            TokenType::Whitespace { .. } => config.whitespace().color().into(),
+            TokenType::Keyword { .. } => config.keyword().color().into(),
+            TokenType::String { .. } => config.string().color().into(),
+            TokenType::Number { .. } => config.number().color().into(),
+            TokenType::Identifier { .. } => config.identifier().color().into(),
+            TokenType::Literal { .. } => config.literal().color().into(),
+            TokenType::Comment { .. } => config.comment().color().into(),
+            TokenType::Operator { .. } => config.operator().color().into(),
+            TokenType::Separator { .. } => config.separator().color().into(),
+        };
         for c in self.token_type.text().chars() {
-            let mut text_character = TextCharacter::new(
-                c.clone(),
-                self.token_type.line(),
-                self.token_type.clone().into(),
-            );
+            let mut text_character =
+                TextCharacter::new(c.clone(), self.token_type.line(), color.clone());
             text_character.update_view(renderer);
             self.characters.push(text_character);
         }
@@ -89,3 +82,23 @@ impl Update for EditorFileToken {
         UpdateResult::NoOp
     }
 }
+
+impl ClickHandler for EditorFileToken {
+    fn on_left_click(&mut self, point: &Point, config: &Config) -> UpdateResult {
+        for text_character in self.characters.iter_mut() {
+            if text_character.is_left_click_target(point) {
+                return text_character.on_left_click(point, config);
+            }
+        }
+        UpdateResult::NoOp
+    }
+
+    fn is_left_click_target(&self, point: &Point) -> bool {
+        for text_character in self.characters.iter() {
+            if text_character.is_left_click_target(point) {
+                return true;
+            }
+        }
+        false
+    }
+}

src/lexer/mod.rs

@@ -92,7 +92,7 @@ pub struct Token {
     character: usize,
     start: usize,
     end: usize,
-    pub text: String,
+    text: String,
 }
 
 #[derive(Debug, Clone, Copy)]

src/main.rs

@@ -1,24 +1,25 @@
 #![allow(unused_imports)]
 
+extern crate dirs;
 extern crate plex;
 extern crate rand;
 extern crate sdl2;
-extern crate dirs;
 #[macro_use]
 extern crate serde;
 #[macro_use]
-extern crate serde_json;
-#[macro_use]
 extern crate serde_derive;
+#[macro_use]
+extern crate serde_json;
+
+use crate::app::Application;
 
 pub mod app;
-pub mod ui;
+pub mod config;
 pub mod file;
 pub mod lexer;
 pub mod renderer;
 pub mod themes;
-
-use crate::app::Application;
+pub mod ui;
 
 fn main() {
     let mut app = Application::new();

src/renderer/managers.rs

@@ -1,3 +1,7 @@
+use sdl2::image::LoadTexture;
+use sdl2::pixels::Color;
+use sdl2::render::{Texture, TextureCreator};
+use sdl2::ttf::{Font, Sdl2TtfContext};
 use std::borrow::Borrow;
 use std::collections::HashMap;
 #[allow(unused_imports)]
@@ -5,11 +9,6 @@ use std::env;
 use std::hash::Hash;
 use std::rc::Rc;
 
-use sdl2::image::LoadTexture;
-use sdl2::pixels::Color;
-use sdl2::render::{Texture, TextureCreator};
-use sdl2::ttf::{Font, Sdl2TtfContext};
-
 pub trait ResourceLoader<'l, R> {
     type Args: ?Sized;
 
@@ -34,7 +33,8 @@ impl TextDetails {
         format!(
             "text({}) size({}) {:?}",
             self.text, self.font.size, self.color
-        ).to_string()
+        )
+            .to_string()
     }
 }
 
@@ -66,6 +66,7 @@ impl<'a> From<&'a FontDetails> for FontDetails {
     }
 }
 
+//noinspection RsWrongLifetimeParametersNumber
 pub type TextureManager<'l, T> = ResourceManager<'l, String, Texture<'l>, TextureCreator<T>>;
 pub type FontManager<'l> = ResourceManager<'l, FontDetails, Font<'l, 'static>, Sdl2TtfContext>;
 
@@ -85,7 +86,10 @@ impl<'l, K, R, L> ResourceManager<'l, K, R, L>
         L: ResourceLoader<'l, R>,
 {
     pub fn new(loader: &'l L) -> Self {
-        Self { cache: HashMap::new(), loader }
+        Self {
+            cache: HashMap::new(),
+            loader,
+        }
     }
 
     pub fn load<D>(&mut self, details: &D) -> Result<Rc<R>, String>
@@ -109,6 +113,7 @@ impl<'l, K, R, L> ResourceManager<'l, K, R, L>
     }
 }
 
+//noinspection RsWrongLifetimeParametersNumber
 impl<'l, T> ResourceLoader<'l, Texture<'l>> for TextureCreator<T> {
     type Args = str;
 
@@ -128,6 +133,7 @@ impl<'l> ResourceLoader<'l, Font<'l, 'static>> for Sdl2TtfContext {
 }
 
 impl<'l, T> TextureManager<'l, T> {
+    //noinspection RsWrongLifetimeParametersNumber
     pub fn load_text(
         &mut self,
         details: &mut TextDetails,
@@ -143,6 +149,7 @@ impl<'l, T> TextureManager<'l, T> {
                 let texture = self.loader.create_texture_from_surface(&surface).unwrap();
                 let resource = Rc::new(texture);
                 self.cache.insert(key, resource.clone());
+                println!("texture for '{}' created", details.text);
                 Ok(resource)
             },
             Ok,

src/renderer/mod.rs

@@ -1,23 +1,20 @@
-pub mod managers;
-
+use crate::app::WindowCanvas;
+use crate::config::Config;
 use crate::renderer::managers::{FontManager, TextureManager};
-
+use crate::renderer::managers::TextDetails;
 use sdl2::rect::{Point, Rect};
 use sdl2::render::{Texture, TextureCreator};
 use sdl2::ttf::Sdl2TtfContext;
 use sdl2::video::WindowContext;
-
 use std::rc::Rc;
 
-use crate::app::config::Config;
-use crate::app::WindowCanvas;
-use crate::renderer::managers::TextDetails;
+pub mod managers;
 
 pub struct Renderer<'a> {
-    pub config: Config,
-    pub font_manager: FontManager<'a>,
-    pub texture_manager: TextureManager<'a, WindowContext>,
-    pub scroll: Point,
+    config: Config,
+    font_manager: FontManager<'a>,
+    texture_manager: TextureManager<'a, WindowContext>,
+    scroll: Point,
 }
 
 impl<'a> Renderer<'a> {
@@ -34,7 +31,29 @@ impl<'a> Renderer<'a> {
         }
     }
 
-    pub fn render_texture(&mut self, canvas: &mut WindowCanvas, texture: &Rc<Texture>, src: &Rect, dest: &Rect) {
+    pub fn config(&self) -> &Config {
+        &self.config
+    }
+
+    pub fn font_manager(&mut self) -> &mut FontManager<'a> {
+        &mut self.font_manager
+    }
+
+    pub fn texture_manager(&mut self) -> &mut TextureManager<'a, WindowContext> {
+        &mut self.texture_manager
+    }
+
+    pub fn scroll(&self) -> &Point {
+        &self.scroll
+    }
+
+    pub fn render_texture(
+        &mut self,
+        canvas: &mut WindowCanvas,
+        texture: &Rc<Texture>,
+        src: &Rect,
+        dest: &Rect,
+    ) {
         canvas
             .copy_ex(
                 texture,
@@ -50,9 +69,7 @@ impl<'a> Renderer<'a> {
 
     pub fn render_text(&mut self, details: TextDetails) -> Option<Rc<Texture>> {
         let font = self.font_manager.load(&details.font).unwrap();
-        let surface = font
-            .render(details.text.as_str())
-            .blended(details.color);
+        let surface = font.render(details.text.as_str()).blended(details.color);
         let surface = if let Ok(s) = surface {
             s
         } else {

src/themes/config_creator.rs

@@ -0,0 +1,155 @@
+use crate::config::directories::*;
+use crate::themes::*;
+use dirs;
+use std::fs;
+use std::path::PathBuf;
+
+pub fn create() {
+    fs::create_dir_all(themes_dir())
+        .unwrap_or_else(|_| panic!("Cannot create theme config directory"));
+    for theme in default_styles() {
+        write_theme(&theme);
+    }
+}
+
+fn write_theme(theme: &Theme) {
+    let mut theme_path = themes_dir();
+    theme_path.push(format!("{}.json", theme.name));
+    let contents = serde_json::to_string_pretty(&theme).unwrap();
+    fs::write(&theme_path, contents.clone())
+        .unwrap_or_else(|_| panic!("Failed to crate theme config file"));
+}
+
+fn default_styles() -> Vec<Theme> {
+    vec![default_theme(), railscasts_theme()]
+}
+
+fn default_theme() -> Theme {
+    Theme::default()
+}
+
+fn railscasts_theme() -> Theme {
+    Theme {
+        name: "railscasts".to_string(),
+        background: SerdeColor {
+            r: 60,
+            g: 60,
+            b: 60,
+            a: 0,
+        },
+        caret: CaretColor {
+            bright: ThemeConfig {
+                color: SerdeColor {
+                    r: 121,
+                    g: 121,
+                    b: 121,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+            blur: ThemeConfig {
+                color: SerdeColor {
+                    r: 21,
+                    g: 21,
+                    b: 21,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+        },
+        code_highlighting: CodeHighlightingColor {
+            whitespace: ThemeConfig {
+                color: SerdeColor {
+                    r: 220,
+                    g: 220,
+                    b: 220,
+                    a: 90,
+                },
+                italic: false,
+                bold: false,
+            },
+            keyword: ThemeConfig {
+                color: SerdeColor {
+                    r: 203,
+                    g: 120,
+                    b: 50,
+                    a: 0,
+                },
+                italic: false,
+                bold: true,
+            },
+            string: ThemeConfig {
+                color: SerdeColor {
+                    r: 164,
+                    g: 194,
+                    b: 96,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+            number: ThemeConfig {
+                color: SerdeColor {
+                    r: 164,
+                    g: 194,
+                    b: 96,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+            identifier: ThemeConfig {
+                color: SerdeColor {
+                    r: 21,
+                    g: 21,
+                    b: 21,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+            literal: ThemeConfig {
+                color: SerdeColor {
+                    r: 21,
+                    g: 21,
+                    b: 21,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+            comment: ThemeConfig {
+                color: SerdeColor {
+                    r: 188,
+                    g: 147,
+                    b: 88,
+                    a: 0,
+                },
+                italic: true,
+                bold: false,
+            },
+            operator: ThemeConfig {
+                color: SerdeColor {
+                    r: 0,
+                    g: 0,
+                    b: 0,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+            separator: ThemeConfig {
+                color: SerdeColor {
+                    r: 21,
+                    g: 21,
+                    b: 21,
+                    a: 0,
+                },
+                italic: false,
+                bold: false,
+            },
+        },
+    }
+}

src/themes/mod.rs

@@ -1,16 +1,19 @@
+use crate::config::directories::*;
+use sdl2::pixels::Color;
+use serde::ser::{Serialize, SerializeMap, Serializer, SerializeSeq};
+use serde_json;
+use std::env;
 use std::fs;
 use std::path::PathBuf;
-use std::env;
-use sdl2::pixels::Color;
-use serde_json;
-use serde::ser::{Serialize, Serializer, SerializeSeq, SerializeMap};
+
+pub mod config_creator;
 
 #[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
 pub struct SerdeColor {
     pub r: u8,
     pub g: u8,
     pub b: u8,
-    pub a: u8
+    pub a: u8,
 }
 
 impl SerdeColor {
@@ -19,13 +22,13 @@ impl SerdeColor {
     }
 }
 
-impl Into<Color> for SerdeColor {
+impl Into<Color> for &SerdeColor {
     fn into(self) -> Color {
         Color {
             r: self.r,
             g: self.g,
             b: self.b,
-            a: self.a
+            a: self.a,
         }
     }
 }
@@ -197,8 +200,9 @@ pub struct Theme {
 
 impl Default for Theme {
     fn default() -> Self {
+        use crate::themes::config_creator;
         Self {
-            name: "Default".to_string(),
+            name: "default".to_string(),
             background: SerdeColor::new(255, 255, 255, 0),
             caret: CaretColor::default(),
             code_highlighting: CodeHighlightingColor::default(),
@@ -223,152 +227,26 @@ impl Theme {
         &self.code_highlighting
     }
 
-    fn railscasts() -> Self {
-        Self {
-            name: "railscasts".to_string(),
-            background: SerdeColor {
-                r: 60,
-                g: 60,
-                b: 60,
-                a: 0
-            },
-            caret: CaretColor { bright: ThemeConfig {
-                color: SerdeColor {
-                    r: 0,
-                    g: 0,
-                    b: 0,
-                    a: 0
-                },
-                italic: false,
-                bold: false
-            }, blur: ThemeConfig {
-                color: SerdeColor {
-                    r: 0,
-                    g: 0,
-                    b: 0,
-                    a: 0
-                },
-                italic: false,
-                bold: false
-            } },
-            code_highlighting: CodeHighlightingColor {
-                whitespace: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                },
-                keyword: ThemeConfig {
-                    color: SerdeColor {
-                        r: 203,
-                        g: 120,
-                        b: 50,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: true
-                },
-                string: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                },
-                number: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                },
-                identifier: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                },
-                literal: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                },
-                comment: ThemeConfig {
-                    color: SerdeColor {
-                        r: 188,
-                        g: 147,
-                        b: 88,
-                        a: 0
-                    },
-                    italic: true,
-                    bold: false
-                },
-                operator: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                },
-                separator: ThemeConfig {
-                    color: SerdeColor {
-                        r: 0,
-                        g: 0,
-                        b: 0,
-                        a: 0
-                    },
-                    italic: false,
-                    bold: false
-                }
-            }
-        }
-    }
-
-    pub fn load(_theme_name: String) -> Self {
+    pub fn load(theme_name: String) -> Self {
         use dirs;
         let home_dir = dirs::config_dir().unwrap();
         let mut config_dir = home_dir.clone();
-        config_dir.push("rider/themes");
+        config_dir.push("rider");
         fs::create_dir_all(&config_dir)
             .unwrap_or_else(|_| panic!("Cannot create config directory"));
-        let theme = Self::load_content(&config_dir, "default.json");
-        println!("theme config:\n{:?}", theme);
-        theme
+        Self::load_content(format!("{}.json", theme_name).as_str())
     }
 
-    fn load_content(config_dir: &PathBuf, file_name: &str) -> Theme {
-        let mut config_file = config_dir.clone();
+    fn load_content(file_name: &str) -> Theme {
+        let mut config_file = themes_dir();
         config_file.push(file_name);
         let contents = match fs::read_to_string(&config_file) {
             Ok(s) => s,
             Err(_) => {
-                let contents = serde_json::to_string_pretty(&Theme::default())
-                    .unwrap();
-                fs::write(&config_file, contents.clone())
-                    .unwrap_or_else(|_| panic!("Failed to crate theme config file"));
-                contents.to_string()
+                use crate::themes::config_creator;
+                config_creator::create();
+                fs::read_to_string(&config_file)
+                    .unwrap_or_else(|_| panic!("Failed to load theme config file"))
             }
         };
         serde_json::from_str(&contents).unwrap_or_default()

src/ui/caret.rs

@@ -1,12 +1,11 @@
-use sdl2::rect::Rect;
-use sdl2::render::Texture;
-use sdl2::pixels::Color;
-use crate::app::{WindowCanvas, UpdateResult};
+use crate::app::{UpdateResult, WindowCanvas};
+use crate::config::Config;
+use crate::renderer::Renderer;
 use crate::ui::*;
 use crate::ui::text_character::TextCharacter;
-use crate::renderer::Renderer;
-
-const CARET_CHARACTER: char = '│';
+use sdl2::pixels::Color;
+use sdl2::rect::{Point, Rect};
+use sdl2::render::Texture;
 
 #[derive(Clone, Debug, PartialEq)]
 enum CaretState {
@@ -14,21 +13,31 @@ enum CaretState {
     Blur,
 }
 
-#[derive(Clone)]
 pub struct Caret {
     state: CaretState,
-    bright_character: TextCharacter,
-    blur_character: TextCharacter,
     blink_delay: u8,
+    position: Rect,
+    bright_character_color: Color,
+    blur_character_color: Color,
+    pending: bool,
 }
 
 impl Caret {
-    pub fn new() -> Self {
+    pub fn new(config: &Config) -> Self {
+        let bright_character_color = config.theme().caret().bright().color().into();
+        let blur_character_color = config.theme().caret().blur().color().into();
         Self {
-            bright_character: TextCharacter::new(CARET_CHARACTER, 0, Color::RGBA(0, 0, 0, 0)),
-            blur_character: TextCharacter::new(CARET_CHARACTER, 0, Color::RGBA(100, 100, 100, 0)),
             state: CaretState::Bright,
             blink_delay: 0,
+            position: Rect::new(
+                config.editor_left_margin(),
+                config.editor_top_margin(),
+                4,
+                0,
+            ),
+            bright_character_color,
+            blur_character_color,
+            pending: true,
         }
     }
 
@@ -39,20 +48,44 @@ impl Caret {
             CaretState::Bright
         };
     }
+
+    pub fn move_caret(&mut self, pos: Point) {
+        self.position.set_x(pos.x());
+        self.position.set_y(pos.y());
+    }
 }
 
 impl Render for Caret {
     fn render(&mut self, canvas: &mut WindowCanvas, renderer: &mut Renderer) -> UpdateResult {
-        match self.state {
-            CaretState::Bright => {
-                self.bright_character.update_position(&mut Rect::new(100, 220, 0, 0));
-                self.bright_character.render(canvas, renderer)
-            },
-            CaretState::Blur => {
-                self.blur_character.update_position(&mut Rect::new(100, 220, 0, 0));
-                self.blur_character.render(canvas, renderer)
-            },
+        if self.pending {
+            use crate::renderer::managers::FontDetails;
+            let config = renderer.config().clone();
+            let font = renderer
+                .font_manager()
+                .load(&FontDetails {
+                    path: config.editor_config().font_path().clone(),
+                    size: config.editor_config().character_size(),
+                })
+                .unwrap_or_else(|_| panic!("Unable to load font"));
+            if let Ok((_, h)) = font.size_of_char('W') {
+                self.position.set_height(h);
             }
+            self.pending = false;
+        }
+        let start = Point::new(self.position.x(), self.position.y());
+        let end = Point::new(
+            self.position.x(),
+            self.position.y() + self.position.height() as i32,
+        );
+        let color = match self.state {
+            CaretState::Bright => &self.bright_character_color,
+            CaretState::Blur => &self.blur_character_color,
+        };
+        canvas.set_draw_color(color.clone());
+        canvas
+            .draw_line(start, end)
+            .unwrap_or_else(|_| panic!("Failed to draw a caret"));
+        UpdateResult::NoOp
     }
 }
 
@@ -66,3 +99,14 @@ impl Update for Caret {
         UpdateResult::NoOp
     }
 }
+
+impl ClickHandler for Caret {
+    fn on_left_click(&mut self, _point: &Point, _config: &Config) -> UpdateResult {
+        //        self.move_caret(Point::new(self.position.x(), self.position.y()));
+        UpdateResult::NoOp
+    }
+
+    fn is_left_click_target(&self, point: &Point) -> bool {
+        is_in_rect(point, &self.position)
+    }
+}

src/ui/menu_bar.rs

@@ -0,0 +1,55 @@
+use crate::app::{UpdateResult, WindowCanvas};
+use crate::config::Config;
+use crate::renderer::Renderer;
+use crate::ui::*;
+use sdl2::pixels::Color;
+use sdl2::rect::Rect;
+
+pub struct MenuBar {
+    background_color: Color,
+    dest: Rect,
+}
+
+impl MenuBar {
+    pub fn new() -> Self {
+        Self {
+            background_color: Color::RGB(10, 10, 10),
+            dest: Rect::new(0, 0, 0, 0),
+        }
+    }
+
+    pub fn background_color(&self) -> &Color {
+        &self.background_color
+    }
+
+    pub fn dest(&self) -> &Rect {
+        &self.dest
+    }
+}
+
+impl Render for MenuBar {
+    fn render(&mut self, canvas: &mut WindowCanvas, renderer: &mut Renderer) -> UpdateResult {
+        let width = renderer.config().width();
+        let height = renderer.config().menu_height() as u32;
+        self.dest = Rect::new(0, 0, width, height);
+        canvas.set_draw_color(self.background_color.clone());
+        canvas.draw_rect(self.dest.clone()).unwrap();
+        UpdateResult::NoOp
+    }
+}
+
+impl Update for MenuBar {
+    fn update(&mut self, _ticks: i32) -> UpdateResult {
+        UpdateResult::NoOp
+    }
+}
+
+impl ClickHandler for MenuBar {
+    fn on_left_click(&mut self, _point: &Point, _config: &Config) -> UpdateResult {
+        unimplemented!()
+    }
+
+    fn is_left_click_target(&self, point: &Point) -> bool {
+        is_in_rect(point, self.dest())
+    }
+}

src/ui/mod.rs

@@ -1,8 +1,20 @@
+use crate::app::{UpdateResult, WindowCanvas};
+use crate::config::Config;
+use crate::renderer::Renderer;
+use sdl2::rect::{Point, Rect};
+
 pub mod caret;
+pub mod menu_bar;
 pub mod text_character;
 
-use crate::renderer::Renderer;
-use crate::app::{WindowCanvas,UpdateResult};
+pub fn is_in_rect(point: &Point, rect: &Rect) -> bool {
+    let start = Point::new(rect.x(), rect.y());
+    let end = Point::new(
+        rect.x() + (rect.width() as i32),
+        rect.y() + (rect.height() as i32),
+    );
+    start.x() <= point.x() && start.y() <= point.y() && end.x() >= point.x() && end.y() >= point.y()
+}
 
 pub trait Render {
     fn render(&mut self, canvas: &mut WindowCanvas, renderer: &mut Renderer) -> UpdateResult;
@@ -11,3 +23,9 @@ pub trait Render {
 pub trait Update {
     fn update(&mut self, ticks: i32) -> UpdateResult;
 }
+
+pub trait ClickHandler {
+    fn on_left_click(&mut self, point: &Point, config: &Config) -> UpdateResult;
+
+    fn is_left_click_target(&self, point: &Point) -> bool;
+}

src/ui/text_character.rs

@@ -1,15 +1,15 @@
-use std::rc::Rc;
+use crate::app::{UpdateResult, WindowCanvas};
+use crate::config::Config;
+use crate::lexer::TokenType;
+use crate::renderer::managers::FontDetails;
+use crate::renderer::managers::TextDetails;
+use crate::renderer::Renderer;
+use crate::ui::*;
+use sdl2::pixels::Color;
 use sdl2::rect::Rect;
 use sdl2::render::Texture;
 use sdl2::ttf::Font;
-use sdl2::pixels::Color;
-
-use crate::lexer::TokenType;
-use crate::renderer::Renderer;
-use crate::renderer::managers::TextDetails;
-use crate::app::{UpdateResult, WindowCanvas};
-use crate::renderer::managers::FontDetails;
-use crate::ui::*;
+use std::rc::Rc;
 
 #[derive(Clone)]
 pub struct TextCharacter {
@@ -45,11 +45,11 @@ impl TextCharacter {
         &self.color
     }
 
-    pub fn update_position(&mut self, current: &mut Rect) {
+    pub fn update_position(&mut self, current: &mut Rect, config: &Config) {
         if self.is_new_line() {
-            let y = (self.line * self.source.height() as usize) as i32;
-            current.set_x(0);
-            current.set_y(y);
+            let y = self.source.height() as i32;
+            current.set_x(config.editor_left_margin());
+            current.set_y(current.y() + y);
         } else {
             self.dest.set_x(current.x());
             self.dest.set_y(current.y());
@@ -60,12 +60,11 @@ impl TextCharacter {
     }
 
     pub fn update_view(&mut self, renderer: &mut Renderer) -> UpdateResult {
-        let config = &renderer.config.editor_config;
-        let font_details = FontDetails::new(
-            config.font_path.as_str(),
-            config.character_size.clone(),
-        );
-        let font = renderer.font_manager
+        let config = renderer.config().editor_config();
+        let font_details =
+            FontDetails::new(config.font_path().as_str(), config.character_size().clone());
+        let font = renderer
+            .font_manager()
             .load(&font_details)
             .unwrap_or_else(|_| panic!("Font not found {:?}", font_details));
 
@@ -79,10 +78,10 @@ impl TextCharacter {
             color: self.color.clone(),
             font: font_details.clone(),
         };
-        renderer.texture_manager
+        renderer
+            .texture_manager()
             .load_text(&mut details, &font)
             .unwrap_or_else(|_| panic!("Could not create texture for {:?}", c));
-        println!("texture for '{}' created", self.text_character);
 
         self.pending = false;
         UpdateResult::RefreshPositions
@@ -94,7 +93,7 @@ impl TextCharacter {
     }
 
     #[inline]
-    fn is_pending(&self) -> bool {
+    pub fn is_pending(&self) -> bool {
         self.pending
     }
 }
@@ -112,12 +111,11 @@ impl Render for TextCharacter {
             return UpdateResult::NoOp;
         }
 
-        let config = &renderer.config.editor_config;
-        let font_details = FontDetails::new(
-            config.font_path.as_str(),
-            config.character_size.clone(),
-        );
-        let font = renderer.font_manager
+        let config = renderer.config().editor_config();
+        let font_details =
+            FontDetails::new(config.font_path().as_str(), config.character_size().clone());
+        let font = renderer
+            .font_manager()
             .load(&font_details)
             .unwrap_or_else(|_| panic!("Could not load font for {:?}", font_details));
 
@@ -127,7 +125,7 @@ impl Render for TextCharacter {
             color: self.color.clone(),
             font: font_details.clone(),
         };
-        if let Ok(texture) = renderer.texture_manager.load_text(&mut details, &font) {
+        if let Ok(texture) = renderer.texture_manager().load_text(&mut details, &font) {
             renderer.render_texture(canvas, &texture, &self.source, &self.dest);
         }
         UpdateResult::NoOp
@@ -139,3 +137,13 @@ impl Update for TextCharacter {
         UpdateResult::NoOp
     }
 }
+
+impl ClickHandler for TextCharacter {
+    fn on_left_click(&mut self, _point: &Point, _config: &Config) -> UpdateResult {
+        UpdateResult::MoveCaret(self.dest().clone())
+    }
+
+    fn is_left_click_target(&self, point: &Point) -> bool {
+        is_in_rect(point, self.dest())
+    }
+}