244 lines
8.9 KiB
Rust
244 lines
8.9 KiB
Rust
use cosmic_text::{FontSystem, TextAction, TextBuffer, TextCursor, TextLineIndex, TextMetrics};
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use orbclient::{Color, EventOption, Renderer, Window, WindowFlag};
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use std::{env, fs, time::Instant};
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fn main() {
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env_logger::init();
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let display_scale = match orbclient::get_display_size() {
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Ok((w, h)) => {
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log::info!("Display size: {}, {}", w, h);
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(h as i32 / 1600) + 1
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}
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Err(err) => {
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log::warn!("Failed to get display size: {}", err);
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1
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}
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};
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let font_system = FontSystem::new();
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let mut window = Window::new_flags(
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-1,
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-1,
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1024 * display_scale as u32,
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768 * display_scale as u32,
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&format!("COSMIC TEXT - {}", font_system.locale),
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&[WindowFlag::Resizable],
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)
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.unwrap();
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let font_matches = font_system.matches(|info| -> bool {
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#[cfg(feature = "mono")]
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let monospaced = true;
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#[cfg(not(feature = "mono"))]
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let monospaced = false;
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let matched = {
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info.style == fontdb::Style::Normal &&
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info.weight == fontdb::Weight::NORMAL &&
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info.stretch == fontdb::Stretch::Normal &&
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(info.monospaced == monospaced || info.post_script_name.contains("Emoji"))
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};
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if matched {
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log::debug!(
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"{:?}: family '{}' postscript name '{}' style {:?} weight {:?} stretch {:?} monospaced {:?}",
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info.id,
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info.family,
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info.post_script_name,
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info.style,
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info.weight,
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info.stretch,
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info.monospaced
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);
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}
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matched
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}).unwrap();
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let bg_color = Color::rgb(0x34, 0x34, 0x34);
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let font_color = Color::rgb(0xFF, 0xFF, 0xFF);
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let font_sizes = [
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TextMetrics::new(10, 14).scale(display_scale), // Caption
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TextMetrics::new(14, 20).scale(display_scale), // Body
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TextMetrics::new(20, 28).scale(display_scale), // Title 4
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TextMetrics::new(24, 32).scale(display_scale), // Title 3
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TextMetrics::new(28, 36).scale(display_scale), // Title 2
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TextMetrics::new(32, 44).scale(display_scale), // Title 1
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];
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let font_size_default = 1; // Body
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let mut font_size_i = font_size_default;
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let text = if let Some(arg) = env::args().nth(1) {
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fs::read_to_string(&arg).expect("failed to open file")
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} else {
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#[cfg(feature = "mono")]
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let default_text = include_str!("../../../sample/mono.txt");
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#[cfg(not(feature = "mono"))]
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let default_text = include_str!("../../../sample/proportional.txt");
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default_text.to_string()
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};
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let line_x = 8 * display_scale;
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let mut buffer = TextBuffer::new(
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&font_matches,
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font_sizes[font_size_i]
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);
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buffer.set_size(
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window.width() as i32 - line_x * 2,
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window.height() as i32
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);
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buffer.set_text(&text);
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let mut ctrl_pressed = false;
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let mut mouse_x = -1;
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let mut mouse_y = -1;
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let mut mouse_left = false;
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loop {
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let font_size = buffer.metrics().font_size;
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let line_height = buffer.metrics().line_height;
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if buffer.redraw {
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let instant = Instant::now();
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window.set(bg_color);
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buffer.draw(font_color.data, |x, y, w, h, color| {
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window.rect(line_x + x, y, w, h, Color { data: color });
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});
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/*TODO
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let mut line_y = font_size;
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let mut start_line_opt = None;
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let mut end_line = TextLineIndex::new(0);
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for (line_i, line) in buffer
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.layout_lines()
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.iter()
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.skip(buffer.scroll() as usize)
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.take(buffer.lines() as usize)
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.enumerate()
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{
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if line_y >= window.height() as i32 {
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break;
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}
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end_line = line.line_i;
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if start_line_opt == None {
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start_line_opt = Some(end_line);
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}
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line_y += line_height;
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}
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// Draw scrollbar
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{
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let start_line = start_line_opt.unwrap_or(end_line);
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let lines = buffer.text_lines().len();
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let start_y = (start_line.get() * window.height() as usize) / lines;
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let end_y = (end_line.get() * window.height() as usize) / lines;
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if end_y > start_y {
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window.rect(
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window.width() as i32 - line_x as i32,
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start_y as i32,
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line_x as u32,
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(end_y - start_y) as u32,
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Color::rgba(0xFF, 0xFF, 0xFF, 0x40),
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);
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}
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}
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*/
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window.sync();
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buffer.redraw = false;
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let duration = instant.elapsed();
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log::debug!("redraw: {:?}", duration);
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}
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for event in window.events() {
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match event.to_option() {
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EventOption::Key(event) => match event.scancode {
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orbclient::K_CTRL => ctrl_pressed = event.pressed,
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orbclient::K_LEFT if event.pressed => buffer.action(TextAction::Left),
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orbclient::K_RIGHT if event.pressed => buffer.action(TextAction::Right),
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orbclient::K_UP if event.pressed => buffer.action(TextAction::Up),
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orbclient::K_DOWN if event.pressed => buffer.action(TextAction::Down),
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orbclient::K_HOME if event.pressed => buffer.action(TextAction::Home),
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orbclient::K_END if event.pressed => buffer.action(TextAction::End),
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orbclient::K_PGUP if event.pressed => buffer.action(TextAction::PageUp),
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orbclient::K_PGDN if event.pressed => buffer.action(TextAction::PageDown),
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orbclient::K_ENTER if event.pressed => buffer.action(TextAction::Enter),
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orbclient::K_BKSP if event.pressed => buffer.action(TextAction::Backspace),
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orbclient::K_DEL if event.pressed => buffer.action(TextAction::Delete),
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orbclient::K_0 if event.pressed && ctrl_pressed => {
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font_size_i = font_size_default;
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buffer.set_metrics(font_sizes[font_size_i]);
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},
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orbclient::K_MINUS if event.pressed && ctrl_pressed => {
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if font_size_i > 0 {
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font_size_i -= 1;
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buffer.set_metrics(font_sizes[font_size_i]);
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}
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},
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orbclient::K_EQUALS if event.pressed && ctrl_pressed => {
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if font_size_i + 1 < font_sizes.len() {
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font_size_i += 1;
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buffer.set_metrics(font_sizes[font_size_i]);
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}
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},
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orbclient::K_D if event.pressed && ctrl_pressed => {
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// Debug by shaping whole buffer
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log::info!("Shaping rest of buffer");
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let instant = Instant::now();
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buffer.shape_until(i32::max_value());
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let elapsed = instant.elapsed();
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log::info!("Shaped rest of buffer in {:?}", elapsed);
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}
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_ => (),
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},
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EventOption::TextInput(event) if !ctrl_pressed => {
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buffer.action(TextAction::Insert(event.character));
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}
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EventOption::Mouse(event) => {
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mouse_x = event.x;
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mouse_y = event.y;
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if mouse_left {
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buffer.action(TextAction::Drag {
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x: mouse_x - line_x,
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y: mouse_y
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});
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}
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}
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EventOption::Button(event) => {
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if event.left != mouse_left {
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mouse_left = event.left;
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if mouse_left {
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buffer.action(TextAction::Click {
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x: mouse_x - line_x,
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y: mouse_y
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});
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}
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}
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}
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EventOption::Resize(event) => {
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buffer.set_size(
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event.width as i32 - line_x * 2,
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event.height as i32,
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);
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}
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EventOption::Scroll(event) => {
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buffer.action(TextAction::Scroll {
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lines: -event.y * 3,
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});
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}
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EventOption::Quit(_) => return,
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_ => (),
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}
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}
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}
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}
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