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Tint color options #101

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Tint color options #101

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3 changes: 2 additions & 1 deletion FXBlurView/FXBlurView.h
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@

@interface UIImage (FXBlurView)

- (UIImage *)blurredImageWithRadius:(CGFloat)radius iterations:(NSUInteger)iterations tintColor:(UIColor *)tintColor;
- (UIImage *)blurredImageWithRadius:(CGFloat)radius iterations:(NSUInteger)iterations tintColor:(UIColor *)tintColor tintBlendMode:(CGBlendMode)tintBlendMode;

@end

Expand All @@ -68,6 +68,7 @@
@property (nonatomic, assign) NSTimeInterval updateInterval;
@property (nonatomic, assign) CGFloat blurRadius;
@property (nonatomic, strong) UIColor *tintColor;
@property (nonatomic) CGBlendMode tintBlendMode;
@property (nonatomic, weak_ref) IBOutlet UIView *underlyingView;

- (void)updateAsynchronously:(BOOL)async completion:(void (^)())completion;
Expand Down
21 changes: 15 additions & 6 deletions FXBlurView/FXBlurView.m
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@

@implementation UIImage (FXBlurView)

- (UIImage *)blurredImageWithRadius:(CGFloat)radius iterations:(NSUInteger)iterations tintColor:(UIColor *)tintColor
- (UIImage *)blurredImageWithRadius:(CGFloat)radius iterations:(NSUInteger)iterations tintColor:(UIColor *)tintColor tintBlendMode:(CGBlendMode)tintBlendMode
{
//image must be nonzero size
if (floorf(self.size.width) * floorf(self.size.height) <= 0.0f) return self;
Expand Down Expand Up @@ -99,8 +99,14 @@ - (UIImage *)blurredImageWithRadius:(CGFloat)radius iterations:(NSUInteger)itera
//apply tint
if (tintColor && CGColorGetAlpha(tintColor.CGColor) > 0.0f)
{
CGContextSetFillColorWithColor(ctx, [tintColor colorWithAlphaComponent:0.25].CGColor);
CGContextSetBlendMode(ctx, kCGBlendModePlusLighter);
CGFloat tintAlpha = CGColorGetAlpha(tintColor.CGColor);

if (tintAlpha == 1.0f) {
tintAlpha = 0.25f;
}

CGContextSetFillColorWithColor(ctx, [tintColor colorWithAlphaComponent:CGColorGetAlpha(tintColor.CGColor)].CGColor);
CGContextSetBlendMode(ctx, tintBlendMode);
CGContextFillRect(ctx, CGRectMake(0, 0, buffer1.width, buffer1.height));
}

Expand Down Expand Up @@ -156,6 +162,7 @@ @interface FXBlurView ()
@property (nonatomic, assign) BOOL blurRadiusSet;
@property (nonatomic, assign) BOOL dynamicSet;
@property (nonatomic, assign) BOOL blurEnabledSet;
@property (nonatomic, assign) BOOL tintBlendModeSet;
@property (nonatomic, strong) NSDate *lastUpdate;

- (UIImage *)snapshotOfUnderlyingView;
Expand Down Expand Up @@ -265,7 +272,7 @@ - (void)updateAsynchronously
}
}
}

//try again, delaying until the time when the next view needs an update.
self.viewIndex = 0;
[self performSelector:@selector(updateAsynchronously)
Expand Down Expand Up @@ -306,6 +313,7 @@ - (void)setUp
if (!_blurRadiusSet) [self blurLayer].blurRadius = 40;
if (!_dynamicSet) _dynamic = YES;
if (!_blurEnabledSet) _blurEnabled = YES;
if (!_tintBlendModeSet) _tintBlendMode = kCGBlendModePlusLighter;
self.updateInterval = _updateInterval;
self.layer.magnificationFilter = @"linear"; // kCAFilterLinear

Expand Down Expand Up @@ -482,7 +490,7 @@ - (void)displayLayer:(__unused CALayer *)layer
{
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:key];
animation.fromValue = [layer.presentationLayer valueForKey:key];

//CAMediatiming attributes
animation.beginTime = action.beginTime;
animation.duration = action.duration;
Expand Down Expand Up @@ -581,7 +589,8 @@ - (UIImage *)blurredSnapshot:(UIImage *)snapshot radius:(CGFloat)blurRadius
{
return [snapshot blurredImageWithRadius:blurRadius
iterations:self.iterations
tintColor:self.tintColor];
tintColor:self.tintColor
tintBlendMode:self.tintBlendMode];
}

- (void)setLayerContents:(UIImage *)image
Expand Down