From 6baa583a28e5e3ef15899d16552dfc507432b500 Mon Sep 17 00:00:00 2001
From: Karl Tauber <karl@jformdesigner.com>
Date: Tue, 28 Sep 2021 19:48:54 +0200
Subject: [PATCH] ColorFunctions: improved performance of mix(), tint() and
 shade() color functions

(used UIDefaultsDump to verify whether results are the same as before)
---
 .../java/com/formdev/flatlaf/util/ColorFunctions.java | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java
index fd223930..8ed13092 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java
@@ -26,6 +26,17 @@ import java.awt.Color;
 public class ColorFunctions
 {
 	public static Color applyFunctions( Color color, ColorFunction... functions ) {
+		// if having only a single function of type Mix, then avoid four unnecessary conversions:
+		//     1. RGB to HSL in this method
+		//     2. HSL to RGB in Mix.apply()
+		//        mix
+		//     3. RGB to HSL in Mix.apply()
+		//     4. HSL to RGB in this method
+		if( functions.length == 1 && functions[0] instanceof Mix ) {
+			Mix mixFunction = (Mix) functions[0];
+			return mix( color, mixFunction.color2, mixFunction.weight / 100 );
+		}
+
 		// convert RGB to HSL
 		float[] hsl = HSLColor.fromRGB( color );
 		float alpha = color.getAlpha() / 255f;