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feat: finalizations for M0-M2

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This commit is contained in:
Chili Palmer
2026-04-05 07:41:33 +02:00
parent e46294a022
commit ee61ad56ea
48 changed files with 1296 additions and 498 deletions
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73
crates/bds-editor/src/widget.rs
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@@ -1,3 +1,6 @@
use std::sync::OnceLock;
use cosmic_text::{Attrs, Buffer as CosmicBuffer, Family, FontSystem, Metrics, Shaping};
use iced::advanced::layout::{self, Layout};
use iced::advanced::renderer;
use iced::advanced::text;
@@ -23,8 +26,44 @@ struct EditorState {
is_focused: bool,
}
const LINE_HEIGHT: f32 = 20.0;
const CHAR_WIDTH: f32 = 8.4;
/// Font metrics measured via cosmic-text, cached globally.
pub struct MonoMetrics {
pub char_width: f32,
pub line_height: f32,
}
static MONO_METRICS: OnceLock<MonoMetrics> = OnceLock::new();
/// Measure the monospace font metrics using cosmic-text.
pub fn mono_metrics() -> &'static MonoMetrics {
MONO_METRICS.get_or_init(|| {
let mut font_system = FontSystem::new();
let metrics = Metrics::new(FONT_SIZE, (FONT_SIZE * 1.43).ceil());
let mut buffer = CosmicBuffer::new(&mut font_system, metrics);
buffer.set_size(&mut font_system, Some(500.0), Some(100.0));
buffer.set_text(
&mut font_system,
"M",
Attrs::new().family(Family::Monospace),
Shaping::Advanced,
);
buffer.shape_until_scroll(&mut font_system, false);
let mut char_width = FONT_SIZE * 0.6; // fallback
let mut line_height = (FONT_SIZE * 1.43).ceil(); // fallback
for run in buffer.layout_runs() {
if let Some(glyph) = run.glyphs.first() {
char_width = glyph.w;
}
line_height = run.line_height;
break;
}
MonoMetrics { char_width, line_height }
})
}
const GUTTER_WIDTH: f32 = 50.0;
const FONT_SIZE: f32 = 14.0;
const BG_COLOR: Color = Color::from_rgb(0.18, 0.20, 0.25);
@@ -129,9 +168,10 @@ where
GUTTER_BG,
);
let metrics = mono_metrics();
let (cursor_line, cursor_col) = self.buffer.cursor();
let scroll = self.buffer.scroll_offset();
let visible_lines = (bounds.height / LINE_HEIGHT) as usize + 1;
let visible_lines = (bounds.height / metrics.line_height) as usize + 1;
let font = iced::Font::MONOSPACE;
@@ -142,8 +182,8 @@ where
break;
}
let y = bounds.y + vis_idx as f32 * LINE_HEIGHT;
if y + LINE_HEIGHT < bounds.y || y > bounds.y + bounds.height {
let y = bounds.y + vis_idx as f32 * metrics.line_height;
if y + metrics.line_height < bounds.y || y > bounds.y + bounds.height {
continue;
}
@@ -157,9 +197,9 @@ where
renderer.fill_text(
text::Text {
content: line_num,
bounds: Size::new(GUTTER_WIDTH - 8.0, LINE_HEIGHT),
bounds: Size::new(GUTTER_WIDTH - 8.0, metrics.line_height),
size: Pixels(FONT_SIZE),
line_height: iced::widget::text::LineHeight::Absolute(Pixels(LINE_HEIGHT)),
line_height: iced::widget::text::LineHeight::Absolute(Pixels(metrics.line_height)),
font,
horizontal_alignment: iced::alignment::Horizontal::Right,
vertical_alignment: iced::alignment::Vertical::Top,
@@ -183,9 +223,9 @@ where
renderer.fill_text(
text::Text {
content: line_text,
bounds: Size::new(bounds.width - GUTTER_WIDTH - 8.0, LINE_HEIGHT),
bounds: Size::new(bounds.width - GUTTER_WIDTH - 8.0, metrics.line_height),
size: Pixels(FONT_SIZE),
line_height: iced::widget::text::LineHeight::Absolute(Pixels(LINE_HEIGHT)),
line_height: iced::widget::text::LineHeight::Absolute(Pixels(metrics.line_height)),
font,
horizontal_alignment: iced::alignment::Horizontal::Left,
vertical_alignment: iced::alignment::Vertical::Top,
@@ -199,14 +239,14 @@ where
// Draw cursor on current line
if line_idx == cursor_line {
let cursor_x = text_x + cursor_col as f32 * CHAR_WIDTH;
let cursor_x = text_x + cursor_col as f32 * metrics.char_width;
renderer.fill_quad(
renderer::Quad {
bounds: Rectangle {
x: cursor_x,
y,
width: 2.0,
height: LINE_HEIGHT,
height: metrics.line_height,
},
border: iced::Border::default(),
shadow: iced::Shadow::default(),
@@ -231,6 +271,7 @@ where
) -> Status {
let state = tree.state.downcast_mut::<EditorState>();
let bounds = layout.bounds();
let metrics = mono_metrics();
match event {
Event::Mouse(mouse::Event::ButtonPressed(mouse::Button::Left)) => {
@@ -238,8 +279,8 @@ where
state.is_focused = true;
// Place cursor at click position
if let Some(pos) = cursor.position_in(bounds) {
let line = (pos.y / LINE_HEIGHT) as usize + self.buffer.scroll_offset();
let col = ((pos.x - GUTTER_WIDTH - 8.0).max(0.0) / CHAR_WIDTH) as usize;
let line = (pos.y / metrics.line_height) as usize + self.buffer.scroll_offset();
let col = ((pos.x - GUTTER_WIDTH - 8.0).max(0.0) / metrics.char_width) as usize;
self.buffer.set_cursor(line, col);
}
return Status::Captured;
@@ -250,7 +291,7 @@ where
Event::Mouse(mouse::Event::WheelScrolled { delta }) if cursor.is_over(bounds) => {
let lines = match delta {
mouse::ScrollDelta::Lines { y, .. } => -(y * 3.0) as isize,
mouse::ScrollDelta::Pixels { y, .. } => -(y / LINE_HEIGHT) as isize,
mouse::ScrollDelta::Pixels { y, .. } => -(y / metrics.line_height) as isize,
};
self.buffer.scroll_by(lines);
return Status::Captured;
@@ -259,12 +300,12 @@ where
match key {
keyboard::Key::Named(keyboard::key::Named::ArrowUp) => {
self.buffer.move_up();
let vis = (bounds.height / LINE_HEIGHT) as usize;
let vis = (bounds.height / metrics.line_height) as usize;
self.buffer.ensure_cursor_visible(vis);
}
keyboard::Key::Named(keyboard::key::Named::ArrowDown) => {
self.buffer.move_down();
let vis = (bounds.height / LINE_HEIGHT) as usize;
let vis = (bounds.height / metrics.line_height) as usize;
self.buffer.ensure_cursor_visible(vis);
}
keyboard::Key::Named(keyboard::key::Named::ArrowLeft) => {