Updated to support outlines.

AngleGradient/AngleGradientView.h

@@ -40,7 +40,20 @@
 @interface AngleGradientView : ANGLE_GRADIENT_SUPERCLASS
 
 @property(strong, nonatomic) AngleGradientLayer *angleGradientLayer;
+@property(strong, nonatomic) UIBezierPath *maskBezierPath;
+@property(strong, nonatomic) CAShapeLayer *outlineLayer;
+@property(strong, nonatomic) UIBezierPath *outlineBezierPath;
+
+@property(strong, nonatomic) UIColor *borderColor;
+@property(nonatomic) CGFloat borderWidth;
+
 @property(strong, nonatomic) NSArray *colors;
 @property(strong, nonatomic) NSArray *locations;
 
+-(void)setOutlineBezierPath:(UIBezierPath *)outlineBezierPath
+                strokeColor:(UIColor*)strokeColor
+                  lineWidth:(CGFloat)lineWidth;
+
+-(void)applyRoundMask;
+
 @end

AngleGradient/AngleGradientView.m

@@ -29,8 +29,16 @@
 #import "AngleGradientView.h"
 #import "AngleGradientLayer.h"
 
+@interface AngleGradientView ()
+
+@property (strong, nonatomic) CALayer *maskLayer;
+
+@end
+
 @implementation AngleGradientView
 
+@synthesize outlineBezierPath = _outlineBezierPath;
+
 -(NSArray*)colors
 {
     return self.angleGradientLayer.colors;
@@ -65,5 +73,84 @@ -(AngleGradientLayer*)angleGradientLayer
     return _angleGradientLayer;
 }
 
+-(void)setMaskBezierPath:(UIBezierPath *)maskBezierPath
+{
+    _maskBezierPath = maskBezierPath;
+
+    CAShapeLayer *maskLayer = [CAShapeLayer layer];
+    maskLayer.path = maskBezierPath.CGPath;
+    maskLayer.fillRule = kCAFillRuleEvenOdd;
+    maskLayer.fillColor = [UIColor grayColor].CGColor;
+    self.maskLayer = maskLayer;
+}
+
+-(void)setMaskLayer:(CALayer *)maskLayer
+{
+    [self.maskLayer removeFromSuperlayer];
+    _maskLayer = maskLayer;
+    [self.angleGradientLayer setMask:_maskLayer];
+}
+
+-(void)setOutlineBezierPath:(UIBezierPath *)outlineBezierPath
+{
+    [self setOutlineBezierPath:outlineBezierPath strokeColor:[UIColor blackColor] lineWidth:1];
+}
+
+-(void)setOutlineBezierPath:(UIBezierPath *)outlineBezierPath
+                strokeColor:(UIColor*)strokeColor
+                  lineWidth:(CGFloat)lineWidth
+{
+    _outlineBezierPath = outlineBezierPath;
+
+    CAShapeLayer *outlineShapeLayer = [CAShapeLayer layer];
+    outlineShapeLayer.path = outlineBezierPath.CGPath;
+    outlineShapeLayer.strokeColor = strokeColor.CGColor;
+    outlineShapeLayer.fillColor = [UIColor clearColor].CGColor;
+    outlineShapeLayer.lineWidth = lineWidth;
+
+    self.outlineLayer = outlineShapeLayer;
+}
+
+-(UIBezierPath*)outlineBezierPath
+{
+    if(!_outlineBezierPath)
+        _outlineBezierPath = [self.maskBezierPath copy];
+
+    return _outlineBezierPath;
+}
+
+-(void)setOutlineLayer:(CAShapeLayer *)outlineLayer
+{
+    [self.outlineLayer removeFromSuperlayer];
+    _outlineLayer = outlineLayer;
+    [self.layer addSublayer:_outlineLayer];
+}
+
+-(void)applyRoundMask
+{
+    self.maskBezierPath = [UIBezierPath bezierPathWithOvalInRect:self.bounds];
+}
+
+-(void)setBorderColor:(UIColor *)borderColor
+{
+    _borderColor = borderColor;
+    if(self.maskBezierPath)
+        [self setOutlineBezierPath:self.outlineBezierPath
+                       strokeColor:borderColor
+                         lineWidth:self.outlineLayer.lineWidth];
+    else
+        self.layer.borderColor = borderColor.CGColor;
+}
+
+-(void)setBorderWidth:(CGFloat)borderWidth
+{
+    _borderWidth = borderWidth;
+    if(self.maskBezierPath)
+        [self setOutlineBezierPath:self.outlineBezierPath
+                       strokeColor:[UIColor colorWithCGColor:self.outlineLayer.strokeColor]
+                         lineWidth:borderWidth];
+    else
+        self.layer.borderWidth = borderWidth;
+}
 
 @end

AngleGradientSample/AngleGradientSample/UserControl2.m

@@ -13,9 +13,7 @@ - (id)initWithFrame:(CGRect)frame
 {
 	if (!(self = [super initWithFrame:frame]))
 		return nil;
-
-	self.backgroundColor = [UIColor whiteColor];
-
+
 	NSMutableArray *colors = [[NSMutableArray alloc] initWithCapacity:16];
 
 	[colors addObject:(id)[UIColor colorWithWhite:0.65 alpha:1].CGColor];
@@ -31,10 +29,9 @@ - (id)initWithFrame:(CGRect)frame
 
 	self.colors = colors;
 
-	self.layer.cornerRadius = CGRectGetWidth(self.bounds) / 2;
-	self.clipsToBounds = YES;
-	self.layer.borderColor = [UIColor colorWithWhite:0.55 alpha:1].CGColor;
-	self.layer.borderWidth = 1;
+    [self applyRoundMask];
+    self.borderColor = [UIColor grayColor];
+    self.borderWidth = 1;
 
 	return self;
 }

AngleGradientSample/AngleGradientSample/UserControl3.m

@@ -25,6 +25,9 @@ - (id)initWithFrame:(CGRect)frame
 
 	self.transform = CGAffineTransformMakeRotation(0.75 * M_PI);
 
+    self.borderColor = [UIColor blueColor];
+    self.borderWidth = 3;
+
 	return self;
 }
 

AngleGradientSample/AngleGradientSample/UserControl4.m

@@ -13,9 +13,7 @@ - (id)initWithFrame:(CGRect)frame
 {
 	if (!(self = [super initWithFrame:frame]))
 		return nil;
-
-	self.backgroundColor = [UIColor whiteColor];
-
+
 	NSMutableArray *colors = [[NSMutableArray alloc] initWithCapacity:4];
 
 	[colors addObject:(id)[UIColor colorWithRed:1 green:0 blue:0 alpha:1].CGColor];
@@ -28,8 +26,7 @@ - (id)initWithFrame:(CGRect)frame
 
 	self.colors = colors;
 
-	self.layer.cornerRadius = CGRectGetWidth(self.bounds) / 2;
-	self.clipsToBounds = YES;
+	[self applyRoundMask];
 	self.transform = CGAffineTransformMakeRotation(-M_PI_2);
 
 	return self;

AngleGradientSample/AngleGradientSample/UserControl5.m

@@ -13,9 +13,7 @@ - (id)initWithFrame:(CGRect)frame
 {
 	if (!(self = [super initWithFrame:frame]))
 		return nil;
-
-	self.backgroundColor = [UIColor whiteColor];
-
+
 	NSMutableArray *colors = [[NSMutableArray alloc] initWithCapacity:4];
 	NSMutableArray *locations = [[NSMutableArray alloc] initWithCapacity:16];
 
@@ -48,8 +46,7 @@ - (id)initWithFrame:(CGRect)frame
 	self.colors = colors;
 	self.locations = locations;
 
-	self.layer.cornerRadius = CGRectGetWidth(self.bounds) / 2;
-	self.clipsToBounds = YES;
+	[self applyRoundMask];
 
 	return self;
 }

AngleGradientSample/AngleGradientSample/UserControl6.m

@@ -14,9 +14,7 @@ - (id)initWithFrame:(CGRect)frame
 {
 	if (!(self = [super initWithFrame:frame]))
 		return nil;
-
-	self.backgroundColor = [UIColor clearColor];
-
+
 	NSMutableArray *colors = [[NSMutableArray alloc] initWithCapacity:4];
 	NSMutableArray *locations = [[NSMutableArray alloc] initWithCapacity:16];