forked from mars/breed
Selected line# and cursorline styling
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b29891571b
commit
547dea6ac0
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@ -74,15 +74,17 @@ impl Buffer {
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cols: u16,
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rows: u16,
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scroll: Cursor,
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cursor: Cursor,
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out: &mut impl Write,
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) -> crossterm::Result<u32> {
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self.parse();
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let mut styles = self.styles.lock();
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let linenr_style = styles.get_scope("ui.linenr");
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let linenr_style = styles.get_scope("ui.linenr").clone();
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let linenr_width = self.text.len_lines().ilog10() + 1;
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let gutter_width = linenr_width + 1;
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let text_width = cols as usize - gutter_width as usize;
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let line_padding: String = std::iter::repeat(' ').take(text_width).collect();
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out.queue(cursor::MoveTo(0, 0))?;
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@ -94,22 +96,40 @@ impl Buffer {
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}
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let row = row as usize + scroll.line;
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let is_selected = row == cursor.line;
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let linenr_style = if is_selected {
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styles.get_scope("ui.linenr.selected").clone()
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} else {
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linenr_style
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};
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let line_style = if is_selected {
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styles.get_scope("ui.cursorline.primary").clone()
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} else {
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Default::default()
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};
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let linenr = format!("{:width$} ", row, width = linenr_width as usize);
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linenr_style.print_styled(out, &linenr)?;
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let lhs = scroll.column;
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let width = line.len_chars();
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let mut remaining = text_width;
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line_buf.clear();
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if lhs < width {
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let window = text_width.min(width - lhs);
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let rhs = lhs + window;
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let styled = &self.styled[row];
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for (style, range) in styled.iter() {
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for (chunk_style, range) in styled.iter() {
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let range = range.start.max(lhs)..range.end.min(rhs);
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if range.start < range.end {
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// this range is in view so display
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let content = line.slice(range.clone());
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let mut style = line_style.clone();
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style.apply(chunk_style);
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style.print_styled(&mut line_buf, content)?;
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remaining = text_width.saturating_sub(range.end);
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}
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if range.end >= rhs {
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@ -119,6 +139,9 @@ impl Buffer {
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}
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}
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let padding = &line_padding[0..remaining];
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line_style.print_styled(&mut line_buf, padding)?;
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out.write_all(&line_buf)?;
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out.queue(cursor::MoveToNextLine(1))?;
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}
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@ -170,7 +170,7 @@ impl State {
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// draw buffer
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let buffer_rows = if show_status_bar { rows - 1 } else { rows };
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let lr_width = self.buffer.draw(cols, buffer_rows, self.scroll, out)?;
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let lr_width = self.buffer.draw(cols, buffer_rows, self.scroll, self.cursor, out)?;
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// draw cursor
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let cursor_pos = set_cursor_pos.unwrap_or_else(|| {
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@ -1,4 +1,6 @@
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"ui.linenr" = "gray"
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"ui.cursorline" = {}
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"ui.linenr" = "black"
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"ui.linenr.selected" = "white"
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"error" = "red"
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