Extract gutters into helix-view
This commit is contained in:
Blaž Hrastnik
parent
27c1a84f05
commit
225e8ccf31
4 changed files with 117 additions and 100 deletions
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@ -17,7 +17,6 @@ use helix_core::{
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};
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use helix_view::{
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document::{Mode, SCRATCH_BUFFER_NAME},
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editor::{Config, LineNumber},
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graphics::{CursorKind, Modifier, Rect, Style},
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info::Info,
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input::KeyEvent,
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@ -421,97 +420,12 @@ impl EditorView {
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.map(|range| range.cursor_line(text))
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.collect();
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use std::fmt::Write;
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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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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$}", '~', width).unwrap();
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Some(linenr)
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} else {
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let line = match config {
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LineNumber::Absolute => line + 1,
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LineNumber::Relative => {
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if current_line == line {
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line + 1
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} else {
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abs_diff(current_line, line)
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}
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}
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};
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let style = if selected && is_focused {
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linenr_select
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} else {
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linenr
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};
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write!(out, "{:>1$}", 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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type GutterFn<'doc> = Box<dyn Fn(usize, bool, &mut String) -> Option<Style> + 'doc>;
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type Gutter =
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for<'doc> fn(&'doc Document, &View, &Theme, &Config, bool, usize) -> GutterFn<'doc>;
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let gutters: &[(Gutter, usize)] = &[(diagnostic, 1), (line_number, 5)];
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let mut offset = 0;
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// avoid lots of small allocations by reusing a text buffer for each line
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let mut text = String::with_capacity(8);
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for (constructor, width) in gutters {
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for (constructor, width) in view.gutters() {
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let gutter = constructor(doc, view, theme, config, is_focused, *width);
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text.reserve(*width); // ensure there's enough space for the gutter
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for (i, line) in (view.offset.row..(last_line + 1)).enumerate() {
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@ -1214,12 +1128,3 @@ fn canonicalize_key(key: &mut KeyEvent) {
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key.modifiers.remove(KeyModifiers::SHIFT)
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}
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}
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#[inline]
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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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95
helix-view/src/gutter.rs
Normal file
95
helix-view/src/gutter.rs
Normal file
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@ -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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@ -5,6 +5,7 @@ pub mod clipboard;
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pub mod document;
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pub mod editor;
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pub mod graphics;
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pub mod gutter;
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pub mod info;
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pub mod input;
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pub mod keyboard;
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@ -1,6 +1,10 @@
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use std::borrow::Cow;
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use crate::{graphics::Rect, Document, DocumentId, ViewId};
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use crate::{
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graphics::Rect,
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gutter::{self, Gutter},
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Document, DocumentId, ViewId,
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};
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use helix_core::{
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graphemes::{grapheme_width, RopeGraphemes},
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line_ending::line_end_char_index,
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@ -60,6 +64,8 @@ impl JumpList {
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}
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}
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const GUTTERS: &[(Gutter, usize)] = &[(gutter::diagnostic, 1), (gutter::line_number, 5)];
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#[derive(Debug)]
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pub struct View {
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pub id: ViewId,
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@ -83,10 +89,19 @@ impl View {
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}
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}
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pub fn gutters(&self) -> &[(Gutter, usize)] {
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GUTTERS
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}
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pub fn inner_area(&self) -> Rect {
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// TODO: not ideal
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const OFFSET: u16 = 7; // 1 diagnostic + 5 linenr + 1 gutter
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self.area.clip_left(OFFSET).clip_bottom(1) // -1 for statusline
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// TODO: cache this
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let offset = self
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.gutters()
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.iter()
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.map(|(_, width)| *width as u16)
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.sum::<u16>()
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+ 1; // +1 for some space between gutters and line
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self.area.clip_left(offset).clip_bottom(1) // -1 for statusline
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}
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//
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@ -276,6 +291,7 @@ mod tests {
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use super::*;
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use helix_core::Rope;
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const OFFSET: u16 = 7; // 1 diagnostic + 5 linenr + 1 gutter
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// const OFFSET: u16 = GUTTERS.iter().map(|(_, width)| *width as u16).sum();
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#[test]
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fn test_text_pos_at_screen_coords() {
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