From 4fe380f6da394fdcb1e755c30c0773024a3aaf7e Mon Sep 17 00:00:00 2001
From: Nicholas Hollett <niax@niax.co.uk>
Date: Tue, 31 Aug 2021 01:48:03 +0100
Subject: [PATCH] LibGfx: Add color helper for getting shades and tints

Shades are colors darker than the color, tints are colors lighter.
This is helpful in places where we need a bunch of similar colors
with some small differences.
---
 Userland/Libraries/LibGfx/Color.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/Userland/Libraries/LibGfx/Color.h b/Userland/Libraries/LibGfx/Color.h
index 76df0b8b85..ab459e6284 100644
--- a/Userland/Libraries/LibGfx/Color.h
+++ b/Userland/Libraries/LibGfx/Color.h
@@ -237,6 +237,30 @@ public:
         return Color(min(255, (int)((float)red() * amount)), min(255, (int)((float)green() * amount)), min(255, (int)((float)blue() * amount)), alpha());
     }
 
+    Vector<Color> shades(u32 steps, float max = 1.f) const
+    {
+        float shade = 1.f;
+        float step = max / steps;
+        Vector<Color> shades;
+        for (u32 i = 0; i < steps; i++) {
+            shade -= step;
+            shades.append(this->darkened(shade));
+        }
+        return shades;
+    }
+
+    Vector<Color> tints(u32 steps, float max = 1.f) const
+    {
+        float shade = 1.f;
+        float step = max / steps;
+        Vector<Color> tints;
+        for (u32 i = 0; i < steps; i++) {
+            shade += step;
+            tints.append(this->lightened(shade));
+        }
+        return tints;
+    }
+
     constexpr Color inverted() const
     {
         return Color(~red(), ~green(), ~blue(), alpha());