[ADDØ Shade color method

DynamicColor.podspec

@@ -7,7 +7,7 @@ Pod::Spec.new do |s|
   s.social_media_url = 'https://twitter.com/yannickloriot'
   s.authors          = { 'Yannick Loriot' => 'contact@yannickloriot.com' }
   s.source           = { :git => 'https://github.com/yannickl/DynamicColor.git', :tag => s.version }
-  s.screenshot       = 'http://yannickloriot.com/resources/dynamiccolor-screenshot.png'
+  s.screenshot       = 'http://yannickloriot.com/resources/dynamiccolor-sample-screenshot.png'
 
   s.ios.deployment_target = '8.0'
 

DynamicColor/UIColor.swift

@@ -309,4 +309,15 @@ public extension UIColor {
   public func tintColor(amount: CGFloat = 0.2) -> UIColor {
     return mixWithColor(UIColor.whiteColor(), weight: amount)
   }
+
+  /**
+  Creates and return a color object corresponding to the mix of the receiver and an amount of black color, which reduces lightness.
+
+  :params: amount Float between 0 and 1. The default amount is equal to 0.2.
+
+  :returns: A darker UIColor.
+  */
+  public func shadeColor(amount: CGFloat = 0.2) -> UIColor {
+    return mixWithColor(UIColor.blackColor(), weight: amount)
+  }
 }

Example/DynamicColorExample/ViewController.swift

@@ -65,6 +65,9 @@ class ViewController: UIViewController, UICollectionViewDataSource {
     let tintColor = ("Tint", mainColor.tintColor())
     _colors.append(tintColor)
 
+    let shadeColor = ("Shade", mainColor.shadeColor())
+    _colors.append(shadeColor)
+
     colors = _colors
   }
 

README.md

@@ -5,7 +5,7 @@
 DynamicColor provides powerfull methods to manipulate colors in an easy way.
 
 <p align="center">
-  <img src="http://yannickloriot.com/resources/dynamiccolor-screenshot.png" alt="example screenshot" width="300" />
+  <img src="http://yannickloriot.com/resources/dynamiccolor-sample-screenshot.png" alt="example screenshot" width="300" />
 </p>
 
 ## Usage

Tests/DynamicColorTests.swift

@@ -189,7 +189,7 @@ class DynamicColorTests: XCTestCase {
   }
 
   func testTintColor() {
-    let tint  = UIColor(hex: 0xc0392b).tintColor()
+    let tint = UIColor(hex: 0xc0392b).tintColor()
 
     XCTAssert(tint.isEqualToHexString("#cc6055"), "Color string should equal to #cc6055")
 
@@ -201,4 +201,18 @@ class DynamicColorTests: XCTestCase {
 
     XCTAssert(alwaysWhite.isEqualToHexString("#ffffff"), "Color string should equal to #ffffff")
   }
+
+  func testShadeColor() {
+    let shade = UIColor(hex: 0xc0392b).shadeColor()
+
+    XCTAssert(shade.isEqualToHexString("#992d22"), "Color string should equal to #992d22")
+
+    let black = UIColor(hex: 0xc0392b).shadeColor(amount: 1)
+
+    XCTAssert(black.isEqualToHexString("#000000"), "Color string should equal to #000000")
+
+    let alwaysBlack = UIColor.blackColor().shadeColor()
+
+    XCTAssert(alwaysBlack.isEqualToHexString("#000000"), "Color string should equal to #000000")
+  }
 }