mirror of https://github.com/helix-editor/helix
Add infobox
parent
6ccfa229ed
commit
8985c58fd3
@ -0,0 +1,24 @@
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use crate::compositor::{Component, Context};
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use helix_view::graphics::{Margin, Rect, Style};
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use helix_view::info::Info;
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use tui::buffer::Buffer as Surface;
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use tui::widgets::{Block, Borders, Widget};
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impl Component for Info {
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fn render(&self, viewport: Rect, surface: &mut Surface, cx: &mut Context) {
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let block = Block::default().title(self.title).borders(Borders::ALL);
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let Info { width, height, .. } = self;
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let (w, h) = (*width + 2, *height + 2);
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// -2 to subtract command line + statusline. a bit of a hack, because of splits.
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let area = Rect::new(viewport.width - w, viewport.height - h - 2, w, h);
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let margin = Margin {
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vertical: 1,
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horizontal: 1,
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};
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let Rect { x, y, .. } = area.inner(&margin);
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for (y, line) in (y..).zip(self.text.lines()) {
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surface.set_string(x, y, line, Style::default());
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}
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block.render(area, surface);
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}
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}
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@ -0,0 +1,51 @@
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use crate::input::KeyEvent;
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use std::fmt::Write;
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use unicode_width::UnicodeWidthStr;
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#[derive(Debug)]
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/// Info box used in editor. Rendering logic will be in other crate.
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pub struct Info {
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/// Title kept as static str for now.
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pub title: &'static str,
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/// Text body, should contains newline.
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pub text: String,
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/// Body width.
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pub width: u16,
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/// Body height.
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pub height: u16,
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}
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impl Info {
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pub fn key(title: &'static str, body: Vec<(Vec<KeyEvent>, &'static str)>) -> Info {
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let keymaps_width: u16 = body
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.iter()
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.map(|r| r.0.iter().map(|e| e.width() as u16 + 2).sum::<u16>() - 2)
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.max()
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.unwrap();
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let mut text = String::new();
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let mut width = 0;
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let height = body.len() as u16;
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for (mut keyevents, desc) in body {
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let keyevent = keyevents.remove(0);
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let mut left = keymaps_width - keyevent.width() as u16;
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write!(text, "{}", keyevent).ok();
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for keyevent in keyevents {
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write!(text, ", {}", keyevent).ok();
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left -= 2 + keyevent.width() as u16;
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}
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for _ in 0..left {
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text.push(' ');
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}
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if keymaps_width + 2 + (desc.width() as u16) > width {
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width = keymaps_width + 2 + desc.width() as u16;
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}
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writeln!(text, " {}", &desc).ok();
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}
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Info {
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title,
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text,
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width,
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height,
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}
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}
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}
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