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Only draw indent guides within bounds

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Better performance, and otherwise very long lines with lots of tabs
will wrap around the u16 and come back on the other side, messing up
the beginning skip_levels.
This commit is contained in:
A-Walrus 2022-10-11 11:37:57 +03:00 • committed by Blaž Hrastnik
parent 2c36e33e0a
commit 1de02a147c
1 changed files with 6 additions and 8 deletions
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14
helix-term/src/ui/editor.rs
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@ -467,16 +467,14 @@ impl EditorView {
let starting_indent =
(offset.col / tab_width) + config.indent_guides.skip_levels as usize;
// TODO: limit to a max indent level too. It doesn't cause visual artifacts but it would avoid some
// extra loops if the code is deeply nested.
for i in starting_indent..(indent_level / tab_width) {
surface.set_string(
(viewport.x as usize + (i * tab_width) - offset.col) as u16,
viewport.y + line,
&indent_guide_char,
indent_guide_style,
);
let x = (viewport.x as usize + (i * tab_width) - offset.col) as u16;
let y = viewport.y + line;
if !surface.in_bounds(x, y) {
break;
}
surface.set_string(x, y, &indent_guide_char, indent_guide_style);
}
};