mirror of https://github.com/helix-editor/helix
Extract gutters into helix-view
parent
27c1a84f05
commit
225e8ccf31
@ -0,0 +1,95 @@
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use std::fmt::Write;
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use crate::{editor::Config, graphics::Style, Document, Theme, View};
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pub type GutterFn<'doc> = Box<dyn Fn(usize, bool, &mut String) -> Option<Style> + 'doc>;
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pub type Gutter =
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for<'doc> fn(&'doc Document, &View, &Theme, &Config, bool, usize) -> GutterFn<'doc>;
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pub fn diagnostic<'doc>(
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doc: &'doc Document,
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_view: &View,
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theme: &Theme,
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_config: &Config,
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_is_focused: bool,
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_width: usize,
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) -> GutterFn<'doc> {
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let warning = theme.get("warning");
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let error = theme.get("error");
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let info = theme.get("info");
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let hint = theme.get("hint");
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let diagnostics = doc.diagnostics();
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Box::new(move |line: usize, _selected: bool, out: &mut String| {
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use helix_core::diagnostic::Severity;
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if let Some(diagnostic) = diagnostics.iter().find(|d| d.line == line) {
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write!(out, "●").unwrap();
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return Some(match diagnostic.severity {
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Some(Severity::Error) => error,
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Some(Severity::Warning) | None => warning,
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Some(Severity::Info) => info,
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Some(Severity::Hint) => hint,
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});
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}
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None
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})
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}
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pub fn line_number<'doc>(
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doc: &'doc Document,
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view: &View,
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theme: &Theme,
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config: &Config,
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is_focused: bool,
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width: usize,
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) -> GutterFn<'doc> {
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let text = doc.text().slice(..);
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let last_line = view.last_line(doc);
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// Whether to draw the line number for the last line of the
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// document or not. We only draw it if it's not an empty line.
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let draw_last = text.line_to_byte(last_line) < text.len_bytes();
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let linenr = theme.get("ui.linenr");
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let linenr_select: Style = theme.try_get("ui.linenr.selected").unwrap_or(linenr);
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let current_line = doc
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.text()
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.char_to_line(doc.selection(view.id).primary().cursor(text));
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let config = config.line_number;
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Box::new(move |line: usize, selected: bool, out: &mut String| {
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if line == last_line && !draw_last {
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write!(out, "{:>1$}", '~', width).unwrap();
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Some(linenr)
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} else {
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use crate::editor::LineNumber;
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let line = match config {
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LineNumber::Absolute => line + 1,
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LineNumber::Relative => {
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if current_line == line {
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line + 1
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} else {
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abs_diff(current_line, line)
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}
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}
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};
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let style = if selected && is_focused {
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linenr_select
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} else {
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linenr
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};
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write!(out, "{:>1$}", line, width).unwrap();
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Some(style)
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}
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})
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}
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#[inline(always)]
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const fn abs_diff(a: usize, b: usize) -> usize {
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if a > b {
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a - b
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} else {
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b - a
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}
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}
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