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perf(crossterm): Speed up fg/bg color setting

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Use Crossterm SetColors instead of SetForegroundColor and
SetBackgroundColor.

In https://github.com/crossterm-rs/crossterm/pull/879 I changed the
SetColors command to write both colors at once with a single write
instead of multiple writes that more bytes. This led to a 15-25% fps
increase when testing the colors_rgb example on iTerm2 on an M2 Macbook
Pro.
This commit is contained in:
Josh McKinney 2024-04-26 19:54:58 -07:00
parent 4392759501
commit af8da7f06c
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GPG key ID: 722287396A903BC5
1 changed files with 6 additions and 9 deletions
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15
src/backend/crossterm.rs
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@ -10,8 +10,8 @@ use crossterm::{
cursor::{Hide, MoveTo, Show},
execute, queue,
style::{
Attribute as CAttribute, Attributes as CAttributes, Color as CColor, ContentStyle, Print,
SetAttribute, SetBackgroundColor, SetForegroundColor,
Attribute as CAttribute, Attributes as CAttributes, Color as CColor, Colors, ContentStyle,
Print, SetAttribute, SetBackgroundColor, SetColors, SetForegroundColor,
},
terminal::{self, Clear},
};
@ -145,14 +145,11 @@ where
diff.queue(&mut self.writer)?;
modifier = cell.modifier;
}
if cell.fg != fg {
let color = CColor::from(cell.fg);
queue!(self.writer, SetForegroundColor(color))?;
if cell.fg != fg || cell.bg != bg {
let fg_color = CColor::from(cell.fg);
let bg_color = CColor::from(cell.bg);
queue!(self.writer, SetColors(Colors::new(fg_color, bg_color)))?;
fg = cell.fg;
}
if cell.bg != bg {
let color = CColor::from(cell.bg);
queue!(self.writer, SetBackgroundColor(color))?;
bg = cell.bg;
}
#[cfg(feature = "underline-color")]