From 2c7227a2787333fa3729127098a206a16907c233 Mon Sep 17 00:00:00 2001
From: Josh McKinney <joshka@users.noreply.github.com>
Date: Fri, 26 Apr 2024 19:54:58 -0700
Subject: [PATCH] perf(crossterm): Speed up combined fg and bg color changes by
 up to 20%

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.
---
 src/backend/crossterm.rs | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/src/backend/crossterm.rs b/src/backend/crossterm.rs
index d451e4384..46351b604 100644
--- a/src/backend/crossterm.rs
+++ b/src/backend/crossterm.rs
@@ -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")]