Add rulers option (#2060)
* Add color_column option * Rename to ruler Co-authored-by: DeviousStoat <devious@stoat.com>
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@ -43,6 +43,7 @@ hidden = false
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| `completion-trigger-len` | The min-length of word under cursor to trigger autocompletion | `2` |
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| `auto-info` | Whether to display infoboxes | `true` |
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| `true-color` | Set to `true` to override automatic detection of terminal truecolor support in the event of a false negative. | `false` |
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| `rulers` | List of column positions at which to display the rulers. Can be overidden by language specific `rulers` in `languages.toml` file. | `[]` |
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### `[editor.lsp]` Section
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@ -104,6 +104,8 @@ pub struct LanguageConfiguration {
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/// global setting.
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#[serde(default, skip_serializing, deserialize_with = "deserialize_auto_pairs")]
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pub auto_pairs: Option<AutoPairs>,
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pub rulers: Option<Vec<u16>>, // if set, override editor's rulers
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}
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#[derive(Debug, Serialize, Deserialize)]
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@ -126,6 +126,7 @@ impl EditorView {
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Self::render_text_highlights(doc, view.offset, inner, surface, theme, highlights);
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Self::render_gutter(editor, doc, view, view.area, surface, theme, is_focused);
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Self::render_rulers(editor, doc, view, inner, surface, theme);
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if is_focused {
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Self::render_focused_view_elements(view, doc, inner, theme, surface);
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@ -152,6 +153,32 @@ impl EditorView {
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self.render_statusline(doc, view, statusline_area, surface, theme, is_focused);
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}
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pub fn render_rulers(
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editor: &Editor,
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doc: &Document,
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view: &View,
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viewport: Rect,
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surface: &mut Surface,
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theme: &Theme,
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) {
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let editor_rulers = &editor.config().rulers;
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let ruler_theme = theme.get("ui.virtual.ruler");
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let rulers = doc
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.language_config()
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.and_then(|config| config.rulers.as_ref())
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.unwrap_or(editor_rulers);
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rulers
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.iter()
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// View might be horizontally scrolled, convert from absolute distance
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// from the 1st column to relative distance from left of viewport
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.filter_map(|ruler| ruler.checked_sub(1 + view.offset.col as u16))
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.filter(|ruler| ruler < &viewport.width)
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.map(|ruler| viewport.clip_left(ruler).with_width(1))
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.for_each(|area| surface.set_style(area, ruler_theme))
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}
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/// Get syntax highlights for a document in a view represented by the first line
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/// and column (`offset`) and the last line. This is done instead of using a view
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/// directly to enable rendering syntax highlighted docs anywhere (eg. picker preview)
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@ -146,6 +146,8 @@ pub struct Config {
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#[serde(default)]
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pub search: SearchConfig,
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pub lsp: LspConfig,
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/// Column numbers at which to draw the rulers. Default to `[]`, meaning no rulers.
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pub rulers: Vec<u16>,
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}
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#[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize)]
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@ -285,6 +287,7 @@ impl Default for Config {
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true_color: false,
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search: SearchConfig::default(),
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lsp: LspConfig::default(),
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rulers: Vec::new(),
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}
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}
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}
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