Add ability to save and configuratino file

Add ability to save and the start of a config file to config colours,
the font and the font size

colours.odin

@@ -0,0 +1,42 @@
+package main
+
+import "core:encoding/hex"
+import "core:log"
+import "core:strings"
+
+hex_to_rgb :: proc(hex_str: string) -> (red, blue, green: u8, ok: bool) {
+	builder, err := strings.builder_make()
+	if err != nil {
+		log.error("failed to initialize memory")
+		return 0, 0, 0, false
+	}
+
+	rgb_values: [3]u8
+	rgb_count := 0
+	for char, char_idx in hex_str {
+		if char == '#' {
+			continue
+		}
+		if rgb_count > 2 {
+			log.error("Malformed hex colour")
+			return 0, 0, 0, false
+		}
+		strings.write_rune(&builder, char)
+		if strings.builder_len(builder) == 2 {
+			str := strings.to_string(builder)
+			rgb_value, ok := hex.decode_sequence(str)
+			if !ok {
+				log.error("failed to initialize memory")
+				return 0, 0, 0, false
+			}
+			strings.builder_reset(&builder)
+
+			rgb_values[rgb_count] = rgb_value
+
+			rgb_count += 1
+		}
+	}
+
+	return rgb_values[0], rgb_values[1], rgb_values[2], true
+}
+

config.odin

@@ -0,0 +1,80 @@
+package main
+
+import "core:encoding/hex"
+import "core:encoding/ini"
+import "core:fmt"
+import "core:log"
+import "core:mem"
+import "core:strconv"
+import "core:strings"
+import sdl "vendor:sdl2"
+
+parse_config :: proc(config_path: string, allocator := context.allocator) -> (Config, bool) {
+	ini_map, err, ok := ini.load_map_from_path(config_path, allocator=allocator)
+	if err != nil {
+		log.error("failed to parse config file")
+		return {}, false
+	}
+	defer ini.delete_map(ini_map)
+
+	config: Config
+
+	config.font_size = DEFAULT_FONT_SIZE
+
+	config.colours.background = DEFAULT_BACKGROUND_COLOUR
+	config.colours.text = DEFAULT_TEXT_COLOUR
+	config.colours.line_numbers = DEFAULT_LINE_NUMBERS_COLOUR
+	config.colours.line_numbers_background = DEFAULT_LINE_NUMBER_BG_COLOUR
+	config.colours.active_tab = DEFAULT_ACTIVE_TAB_COLOUR
+	config.colours.inactive_tab = DEFAULT_INACTIVE_TAB_COLOUR
+	config.colours.cursor = DEFAULT_CURSOR_COLOUR
+
+	// TODO: Tidy this up
+	for section in ini_map {
+		lower_case_section := strings.to_lower(section)
+		defer delete(lower_case_section)
+
+		if lower_case_section == "general" {
+			for key, value in ini_map[section] {
+				lower_case_key := strings.to_lower(key)
+				defer delete(lower_case_key)
+
+				if lower_case_key == "font" {
+					fmt.println("test", ini_map[section][key])
+					config.font = strings.clone(ini_map[section][key])
+				} else if lower_case_key == "font size" {
+					config.font_size = strconv.atoi(ini_map[section][key])
+				}
+			}
+		} else if lower_case_section == "colours" {
+			for key, value in ini_map[section] {
+				lower_case_key := strings.to_lower(key)
+				defer delete(lower_case_key)
+
+				red, green, blue, ok := hex_to_rgb(ini_map[section][key])
+				if !ok {
+					log.error("failed to parse hex value for", lower_case_key)
+				}
+
+				if lower_case_key == "background" do config.colours.background = sdl.Colour{red, green, blue, 255}
+				else if lower_case_key == "text" do config.colours.text = sdl.Colour{red, green, blue, 255}
+				else if lower_case_key == "line numbers" do config.colours.line_numbers = sdl.Colour{red, green, blue, 255}
+				else if lower_case_key == "line number background" do config.colours.line_numbers_background = sdl.Colour{
+						red, green, blue, 255
+					}
+				else if lower_case_key == "active tab" do config.colours.active_tab = sdl.Colour{red, green, blue, 255}
+				else if lower_case_key == "inactive tab" do config.colours.inactive_tab = sdl.Colour{red, green, blue, 255}
+				else if lower_case_key == "tab border" do config.colours.tab_border = sdl.Colour{red, green, blue, 255}
+				else if lower_case_key == "cursor" do config.colours.cursor = sdl.Colour{red, green, blue, 255}
+			}
+		}
+	}
+
+	if len(config.font) == 0 do	config.font = strings.clone(DEFAULT_FONT)
+
+	return config, true
+}
+
+config_destroy :: proc(config: Config, allocator := context.allocator) {
+	delete(config.font)
+}

constants.odin

@@ -0,0 +1,18 @@
+package main
+
+import sdl "vendor:sdl2"
+
+// Colours
+DEFAULT_BACKGROUND_COLOUR :: sdl.Color{26, 26, 26, 255}
+DEFAULT_TEXT_COLOUR :: sdl.Color{220, 220, 220, 255}
+DEFAULT_LINE_NUMBERS_COLOUR :: sdl.Color{150, 150, 150, 255}
+DEFAULT_LINE_NUMBER_BG_COLOUR :: sdl.Color{40, 40, 40, 255}
+DEFAULT_ACTIVE_TAB_COLOUR :: sdl.Color{60, 60, 60, 255}
+DEFAULT_INACTIVE_TAB_COLOUR :: sdl.Color{45, 45, 45, 255}
+DEFAULT_TAB_BORDER_COLOUR :: sdl.Color{80, 80, 80, 255}
+DEFAULT_CURSOR_COLOUR :: sdl.Color{255, 255, 255, 255}
+
+// FONT
+DEFAULT_FONT :: "/usr/share/fonts/TTF/FiraCode-Regular.ttf"
+DEFAULT_FONT_SIZE :: 11
+

main.odin

@@ -1,13 +1,14 @@
 package main
 
 import "core:fmt"
+import "core:log"
+import "core:math"
+import "core:mem"
 import "core:os"
-import "core:strings"
 import "core:slice"
-import "core:unicode/utf8"
 import "core:strconv"
-import "core:math"
-import "core:mem"
+import "core:strings"
+import "core:unicode/utf8"
 
 import sdl "vendor:sdl2"
 import ttf "vendor:sdl2/ttf"
@@ -20,58 +21,28 @@ LINE_NUMBER_WIDTH :: 60
 FONT_SIZE :: 14
 TEXT_PADDING :: 10
 
-// Colors
-COLOR_BACKGROUND :: sdl.Color{30, 30, 30, 255}
-COLOR_TEXT :: sdl.Color{220, 220, 220, 255}
-COLOR_LINE_NUMBERS :: sdl.Color{150, 150, 150, 255}
-COLOR_TAB_ACTIVE :: sdl.Color{60, 60, 60, 255}
-COLOR_TAB_INACTIVE :: sdl.Color{45, 45, 45, 255}
-COLOR_TAB_BORDER :: sdl.Color{80, 80, 80, 255}
-COLOR_CURSOR :: sdl.Color{255, 255, 255, 255}
-COLOR_LINE_NUMBER_BG :: sdl.Color{40, 40, 40, 255}
-
-// Text buffer for a single file
-Text_Buffer :: struct {
-	lines: [dynamic]string,
-	filename: string,
-	modified: bool,
-	cursor_line: int,
-	cursor_col: int,
-	scroll_y: int,
-	max_line_width: int,
-}
-
-// Tab structure
-Tab :: struct {
-	name: string,
-	buffer: Text_Buffer,
-	rect: sdl.Rect,
-}
-
-// Application state
-App :: struct {
-	window: ^sdl.Window,
-	renderer: ^sdl.Renderer,
-	font: ^ttf.Font,
-	tabs: [dynamic]Tab,
-	active_tab: int,
-	running: bool,
-	char_width: i32,
-	char_height: i32,
-	text_area_width: i32,
-	visible_lines: int,
-	cursor_blink_timer: u32,
-	show_cursor: bool,
-}
-
 app: App
 
 main :: proc() {
+	context.logger = log.create_console_logger(.Debug)
+	defer log.destroy_console_logger(context.logger)
+
 	// Get command line arguments
 	args := os.args[1:]
 
+	ok := false
+	app.config, ok = parse_config("config.ini")
+	if !ok {
+		log.fatal("failed to parse config file")
+		return
+	}
+	defer config_destroy(app.config)
+
+	log.debug("app config:")
+	log.debug(app.config)
+
 	if init_sdl() != 0 {
-		fmt.println("Failed to initialize SDL")
+		log.fatal("failed to initialize sdl")
 		return
 	}
 	defer cleanup_sdl()
@@ -127,7 +98,7 @@ init_sdl :: proc() -> int {
 	}
 
 	app.window = sdl.CreateWindow(
-		"Multi-Tab Text Editor",
+		"notepad",
 		sdl.WINDOWPOS_CENTERED, sdl.WINDOWPOS_CENTERED,
 		WINDOW_WIDTH, WINDOW_HEIGHT,
 		sdl.WINDOW_SHOWN | sdl.WINDOW_RESIZABLE
@@ -144,18 +115,13 @@ init_sdl :: proc() -> int {
 		return -1
 	}
 
-	// Load font - try system fonts first, fallback to a basic one
-	font_paths := []string{
-		"/usr/share/fonts/TTF/FiraCode-Regular.ttf"
-	}
-
-	for path in font_paths {
-		app.font = ttf.OpenFont(strings.clone_to_cstring(path), FONT_SIZE)
-		if app.font != nil do break
-	}
+	font_cstring := strings.clone_to_cstring(app.config.font)
+	defer delete(font_cstring)
+	fmt.println(font_cstring)
+	app.font = ttf.OpenFont(font_cstring, i32(app.config.font_size))
 
 	if app.font == nil {
-		fmt.println("Could not load any font - text rendering will fail")
+		log.fatal("Could not load font")
 		return -1
 	}
 
@@ -467,7 +433,7 @@ handle_scroll :: proc(y: i32) {
 }
 
 render :: proc() {
-	sdl.SetRenderDrawColor(app.renderer, COLOR_BACKGROUND.r, COLOR_BACKGROUND.g, COLOR_BACKGROUND.b, COLOR_BACKGROUND.a)
+	sdl.SetRenderDrawColor(app.renderer, app.config.colours.background.r, app.config.colours.background.g, app.config.colours.background.b, app.config.colours.background.a)
 	sdl.RenderClear(app.renderer)
 
 	render_tabs()
@@ -482,16 +448,16 @@ render :: proc() {
 render_tabs :: proc() {
 	for i in 0..<len(app.tabs) {
 		tab := &app.tabs[i]
-		color := COLOR_TAB_INACTIVE if i != app.active_tab else COLOR_TAB_ACTIVE
+		color := app.config.colours.inactive_tab if i != app.active_tab else app.config.colours.active_tab
 
 		sdl.SetRenderDrawColor(app.renderer, color.r, color.g, color.b, color.a)
 		sdl.RenderFillRect(app.renderer, &tab.rect)
 
-		sdl.SetRenderDrawColor(app.renderer, COLOR_TAB_BORDER.r, COLOR_TAB_BORDER.g, COLOR_TAB_BORDER.b, COLOR_TAB_BORDER.a)
+		sdl.SetRenderDrawColor(app.renderer, app.config.colours.tab_border.r, app.config.colours.tab_border.g, app.config.colours.tab_border.b, app.config.colours.tab_border.a)
 		sdl.RenderDrawRect(app.renderer, &tab.rect)
 
 		// Render tab text
-		render_text(tab.name, tab.rect.x + 10, tab.rect.y + 5, COLOR_TEXT)
+		render_text(tab.name, tab.rect.x + 10, tab.rect.y + 5, app.config.colours.text)
 	}
 }
 
@@ -500,11 +466,11 @@ render_text_area :: proc() {
 
 	// Render line number background
 	line_bg_rect := sdl.Rect{0, TAB_HEIGHT, LINE_NUMBER_WIDTH, WINDOW_HEIGHT - TAB_HEIGHT}
-	sdl.SetRenderDrawColor(app.renderer, COLOR_LINE_NUMBER_BG.r, COLOR_LINE_NUMBER_BG.g, COLOR_LINE_NUMBER_BG.b, COLOR_LINE_NUMBER_BG.a)
+	sdl.SetRenderDrawColor(app.renderer, app.config.colours.line_numbers_background.r, app.config.colours.line_numbers_background.g, app.config.colours.line_numbers_background.b, app.config.colours.line_numbers_background.a)
 	sdl.RenderFillRect(app.renderer, &line_bg_rect)
 
 	// Render separator line
-	sdl.SetRenderDrawColor(app.renderer, COLOR_TAB_BORDER.r, COLOR_TAB_BORDER.g, COLOR_TAB_BORDER.b, COLOR_TAB_BORDER.a)
+	sdl.SetRenderDrawColor(app.renderer, app.config.colours.tab_border.r, app.config.colours.tab_border.g, app.config.colours.tab_border.b, app.config.colours.tab_border.a)
 	sdl.RenderDrawLine(app.renderer, LINE_NUMBER_WIDTH, TAB_HEIGHT, LINE_NUMBER_WIDTH, WINDOW_HEIGHT)
 
 	// Adjust scroll if cursor is outside visible area
@@ -523,7 +489,7 @@ render_text_area :: proc() {
 
 		// Render line number
 		line_num_str := fmt.tprintf("%d", i + 1)
-		render_text(line_num_str, 5, y, COLOR_LINE_NUMBERS)
+		render_text(line_num_str, 5, y, app.config.colours.line_numbers)
 
 		// Render line text with wrapping
 		if i < len(buffer.lines) {
@@ -535,7 +501,7 @@ render_text_area :: proc() {
 			cursor_x := LINE_NUMBER_WIDTH + TEXT_PADDING + i32(buffer.cursor_col) * app.char_width
 			cursor_y := y
 
-			sdl.SetRenderDrawColor(app.renderer, COLOR_CURSOR.r, COLOR_CURSOR.g, COLOR_CURSOR.b, COLOR_CURSOR.a)
+			sdl.SetRenderDrawColor(app.renderer, app.config.colours.cursor.r, app.config.colours.cursor.g, app.config.colours.cursor.b, app.config.colours.cursor.a)
 			cursor_rect := sdl.Rect{cursor_x, cursor_y, 2, app.char_height}
 			sdl.RenderFillRect(app.renderer, &cursor_rect)
 		}
@@ -586,7 +552,7 @@ render_wrapped_line :: proc(line: string, x, y: i32, max_width: i32) {
 		} else {
 			// Render current line and start new one
 			if len(current_line) > 0 {
-				render_text(current_line, x, line_y, COLOR_TEXT)
+				render_text(current_line, x, line_y, app.config.colours.text)
 				line_y += app.char_height
 			}
 			current_line = word
@@ -595,8 +561,7 @@ render_wrapped_line :: proc(line: string, x, y: i32, max_width: i32) {
 
 	// Render final line
 	if len(current_line) > 0 {
-		render_text(current_line, x, line_y, COLOR_TEXT)
+		render_text(current_line, x, line_y, app.config.colours.text)
 	}
 }
 
-

types.odin

@@ -0,0 +1,57 @@
+package main
+
+import sdl "vendor:sdl2"
+import ttf "vendor:sdl2/ttf"
+
+// Text buffer for a single file
+Text_Buffer :: struct {
+	lines: [dynamic]string,
+	filename: string,
+	modified: bool,
+	cursor_line: int,
+	cursor_col: int,
+	scroll_y: int,
+	max_line_width: int,
+}
+
+// Tab structure
+Tab :: struct {
+	name: string,
+	buffer: Text_Buffer,
+	rect: sdl.Rect,
+}
+
+Colours :: struct {
+	background: sdl.Colour,
+	text: sdl.Colour,
+	line_numbers_background: sdl.Colour,
+	line_numbers: sdl.Colour,
+	active_tab: sdl.Colour,
+	inactive_tab: sdl.Colour,
+	tab_border: sdl.Colour,
+	cursor: sdl.Colour
+}
+
+Config :: struct {
+	font: string,
+	font_size: int,
+	colours: Colours,
+}
+
+// Application state
+App :: struct {
+	window: ^sdl.Window,
+	renderer: ^sdl.Renderer,
+	font: ^ttf.Font,
+	tabs: [dynamic]Tab,
+	active_tab: int,
+	running: bool,
+	char_width: i32,
+	char_height: i32,
+	text_area_width: i32,
+	visible_lines: int,
+	cursor_blink_timer: u32,
+	show_cursor: bool,
+	config: Config,
+}
+