#import 

@interfaceUIImage(ImageEffects)

-(UIImage*)applyLightEffect;
-(UIImage*)applyExtraLightEffect;
-(UIImage*)applyDarkEffect;
-(UIImage*)applyTintEffectWithColor:(UIColor*)tintColor;

-(UIImage*)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor*)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage*)maskImage;

@end

#import "UIImage+ImageEffects.h"

#import 
#import 


@implementationUIImage(ImageEffects)


-(UIImage*)applyLightEffect
{
UIColor*tintColor =[UIColor colorWithWhite:1.0 alpha:0.3];
return[self applyBlurWithRadius:30 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
}


-(UIImage*)applyExtraLightEffect
{
UIColor*tintColor =[UIColor colorWithWhite:0.97 alpha:0.82];
return[self applyBlurWithRadius:20 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
}


-(UIImage*)applyDarkEffect
{
UIColor*tintColor =[UIColor colorWithWhite:0.11 alpha:0.73];
return[self applyBlurWithRadius:20 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
}


-(UIImage*)applyTintEffectWithColor:(UIColor*)tintColor
{
constCGFloatEffectColorAlpha=0.6;
UIColor*effectColor = tintColor;
int componentCount =CGColorGetNumberOfComponents(tintColor.CGColor);
if(componentCount ==2){
CGFloat b;
if([tintColor getWhite:&b alpha:NULL]){
effectColor =[UIColor colorWithWhite:b alpha:EffectColorAlpha];
}
}
else{
CGFloat r, g, b;
if([tintColor getRed:&r green:&g blue:&b alpha:NULL]){
effectColor =[UIColor colorWithRed:r green:g blue:b alpha:EffectColorAlpha];
}
}
return[self applyBlurWithRadius:10 tintColor:effectColor saturationDeltaFactor:-1.0 maskImage:nil];
}


-(UIImage*)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor*)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage*)maskImage
{
// Check pre-conditions.
if(self.size.width <1||self.size.height <1){
NSLog(@"*** error: invalid size: (%.2f x %.2f). Both dimensions must be >= 1: %@",self.size.width,self.size.height,self);
returnnil;
}
if(!self.CGImage){
NSLog(@"*** error: image must be backed by a CGImage: %@",self);
returnnil;
}
if(maskImage &&!maskImage.CGImage){
NSLog(@"*** error: maskImage must be backed by a CGImage: %@", maskImage);
returnnil;
}

CGRect imageRect ={CGPointZero,self.size };
UIImage*effectImage =self;

BOOL hasBlur = blurRadius > __FLT_EPSILON__;
BOOL hasSaturationChange = fabs(saturationDeltaFactor -1.)> __FLT_EPSILON__;
if(hasBlur || hasSaturationChange){
UIGraphicsBeginImageContextWithOptions(self.size, NO,[[UIScreen mainScreen] scale]);
CGContextRef effectInContext =UIGraphicsGetCurrentContext();
CGContextScaleCTM(effectInContext,1.0,-1.0);
CGContextTranslateCTM(effectInContext,0,-self.size.height);
CGContextDrawImage(effectInContext, imageRect,self.CGImage);

vImage_Buffer effectInBuffer;
effectInBuffer.data =http://www.mamicode.com/CGBitmapContextGetData(effectInContext);>

UIImageView*me =[[UIImageView alloc] initWithFrame:CGRectMake(10,480,614,381)];
[me setImage:[[UIImage imageNamed:@"me.png"] applyBlurWithRadius:5 tintColor:[UIColor colorWithWhite:1 alpha:0.2] saturationDeltaFactor:1.8 maskImage:nil]];
[self.view addSubview:me];