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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // | ||
| // LOTAnimationView | ||
| // LottieAnimator | ||
| // | ||
| // Created by Brandon Withrow on 12/14/15. | ||
| // Copyright © 2015 Brandon Withrow. All rights reserved. | ||
| // | ||
| #import <QuartzCore/QuartzCore.h> | ||
| #import <Foundation/Foundation.h> | ||
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| @interface LOTRadialGradientLayer : CALayer | ||
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| @property CGPoint startPoint; | ||
| @property CGPoint endPoint; | ||
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| @property (nonatomic, copy) NSArray *colors; | ||
| @property (nonatomic, copy) NSArray<NSNumber *> *locations; | ||
| @property (nonatomic, assign) BOOL isRadial; | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| // | ||
| // LOTAnimationView | ||
| // LottieAnimator | ||
| // | ||
| // Created by Brandon Withrow on 12/14/15. | ||
| // Copyright © 2015 Brandon Withrow. All rights reserved. | ||
| // | ||
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| #import "LOTRadialGradientLayer.h" | ||
| #import "CGGeometry+LOTAdditions.h" | ||
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| @implementation LOTRadialGradientLayer | ||
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| @dynamic isRadial; | ||
| @dynamic startPoint; | ||
| @dynamic endPoint; | ||
| @dynamic colors; | ||
| @dynamic locations; | ||
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| + (BOOL)needsDisplayForKey:(NSString *)key { | ||
| if ([key isEqualToString:@"startPoint"] || | ||
| [key isEqualToString:@"endPoint"] || | ||
| [key isEqualToString:@"colors"] || | ||
| [key isEqualToString:@"locations"] || | ||
| [key isEqualToString:@"isRadial"]) { | ||
| return YES; | ||
| } | ||
| return [super needsDisplayForKey:key]; | ||
| } | ||
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| - (id)actionForKey:(NSString *)key { | ||
| if ([key isEqualToString:@"startPoint"] || | ||
| [key isEqualToString:@"endPoint"] || | ||
| [key isEqualToString:@"colors"] || | ||
| [key isEqualToString:@"locations"] || | ||
| [key isEqualToString:@"isRadial"]) { | ||
| CABasicAnimation *theAnimation = [CABasicAnimation animationWithKeyPath:key]; | ||
| theAnimation.fromValue = [self.presentationLayer valueForKey:key]; | ||
| return theAnimation; | ||
| } | ||
| return [super actionForKey:key]; | ||
| } | ||
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| - (void)drawInContext:(CGContextRef)ctx { | ||
| NSInteger numberOfLocations = self.locations.count; | ||
| NSInteger numbOfComponents = 0; | ||
| CGColorSpaceRef colorSpace = NULL; | ||
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| if (self.colors.count) { | ||
| CGColorRef colorRef = (__bridge CGColorRef)[self.colors objectAtIndex:0]; | ||
| numbOfComponents = CGColorGetNumberOfComponents(colorRef); | ||
| colorSpace = CGColorGetColorSpace(colorRef); | ||
| } | ||
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| CGPoint origin = self.startPoint; | ||
| CGFloat radius = LOT_PointDistanceFromPoint(self.startPoint, self.endPoint); | ||
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| CGFloat gradientLocations[numberOfLocations]; | ||
| CGFloat gradientComponents[numberOfLocations * numbOfComponents]; | ||
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| for (NSInteger locationIndex = 0; locationIndex < numberOfLocations; locationIndex++) { | ||
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| gradientLocations[locationIndex] = [self.locations[locationIndex] floatValue]; | ||
| const CGFloat *colorComponents = CGColorGetComponents((__bridge CGColorRef)self.colors[locationIndex]); | ||
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| for (NSInteger componentIndex = 0; componentIndex < numbOfComponents; componentIndex++) { | ||
| gradientComponents[numbOfComponents * locationIndex + componentIndex] = colorComponents[componentIndex]; | ||
| } | ||
| } | ||
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| CGGradientRef gradient = CGGradientCreateWithColorComponents(colorSpace, gradientComponents, gradientLocations, numberOfLocations); | ||
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| if (self.isRadial) { | ||
| CGContextDrawRadialGradient(ctx, gradient, origin, 0, origin, radius, kCGGradientDrawsAfterEndLocation); | ||
| } else { | ||
| CGContextDrawLinearGradient(ctx, gradient, self.startPoint, self.endPoint, kCGGradientDrawsAfterEndLocation); | ||
| } | ||
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| CGGradientRelease(gradient); | ||
| } | ||
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| @end |
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