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2014/10/15 ¤U¤È 10:13:51

iphone Programming Glossary: self.size

iPhone - How do you color an image?

http://stackoverflow.com/questions/1223340/iphone-how-do-you-color-an-image

account the scale factor with iOS 4. UIImage imageWithOverlayColor UIColor color CGRect rect CGRectMake 0.0f 0.0f self.size.width self.size.height if UIGraphicsBeginImageContextWithOptions CGFloat imageScale 1.0f if self respondsToSelector @selector.. scale factor with iOS 4. UIImage imageWithOverlayColor UIColor color CGRect rect CGRectMake 0.0f 0.0f self.size.width self.size.height if UIGraphicsBeginImageContextWithOptions CGFloat imageScale 1.0f if self respondsToSelector @selector scale The.. @selector scale The scale property is new with iOS4. imageScale self.scale UIGraphicsBeginImageContextWithOptions self.size NO imageScale else UIGraphicsBeginImageContext self.size self drawInRect rect CGContextRef context UIGraphicsGetCurrentContext..

iPhone: Blur UIImage

http://stackoverflow.com/questions/1356250/iphone-blur-uiimage

5 0.2270270270 0.1945945946 0.1216216216 0.0540540541 0.0162162162 Blur horizontally UIGraphicsBeginImageContext self.size self drawInRect CGRectMake 0 0 self.size.width self.size.height blendMode kCGBlendModePlusLighter alpha weight 0 for int.. 0.0540540541 0.0162162162 Blur horizontally UIGraphicsBeginImageContext self.size self drawInRect CGRectMake 0 0 self.size.width self.size.height blendMode kCGBlendModePlusLighter alpha weight 0 for int x 1 x 5 x self drawInRect CGRectMake x 0.. 0.0162162162 Blur horizontally UIGraphicsBeginImageContext self.size self drawInRect CGRectMake 0 0 self.size.width self.size.height blendMode kCGBlendModePlusLighter alpha weight 0 for int x 1 x 5 x self drawInRect CGRectMake x 0 self.size.width..

UIImage with smooth rounded corners in quartz

http://stackoverflow.com/questions/14071278/uiimage-with-smooth-rounded-corners-in-quartz

radius Begin a new image that will be the new image with the rounded corners UIGraphicsBeginImageContextWithOptions self.size NO 0 Add a clip before drawing anything in the shape of an rounded rect CGRect rect CGRectMake 0 0 self.size.width self.size.height.. self.size NO 0 Add a clip before drawing anything in the shape of an rounded rect CGRect rect CGRectMake 0 0 self.size.width self.size.height UIBezierPath bezierPathWithRoundedRect rect cornerRadius radius addClip Draw your image self drawInRect.. NO 0 Add a clip before drawing anything in the shape of an rounded rect CGRect rect CGRectMake 0 0 self.size.width self.size.height UIBezierPath bezierPathWithRoundedRect rect cornerRadius radius addClip Draw your image self drawInRect rect Get..

Blur an image of specific part (rectangular, circular)?

http://stackoverflow.com/questions/14107979/blur-an-image-of-specific-part-rectangular-circular

0.1945945946 0.1216216216 0.0540540541 0.0162162162 Blur horizontally UIGraphicsBeginImageContextWithOptions self.size NO self.scale self drawInRect CGRectMake 0 0 self.size.width self.size.height blendMode kCGBlendModeNormal alpha weight.. Blur horizontally UIGraphicsBeginImageContextWithOptions self.size NO self.scale self drawInRect CGRectMake 0 0 self.size.width self.size.height blendMode kCGBlendModeNormal alpha weight 0 for int x 1 x 5 x self drawInRect CGRectMake x 0 self.size.width.. UIGraphicsBeginImageContextWithOptions self.size NO self.scale self drawInRect CGRectMake 0 0 self.size.width self.size.height blendMode kCGBlendModeNormal alpha weight 0 for int x 1 x 5 x self drawInRect CGRectMake x 0 self.size.width self.size.height..

resize and crop image centered

http://stackoverflow.com/questions/3955189/resize-and-crop-image-centered

CGSize inputSize UIImage outputImage nil CGFloat scaleFactor width resize maintaining aspect ratio inputSize self.size scaleFactor newSize.height inputSize.height width roundf inputSize.width scaleFactor if width newSize.width scaleFactor..

Is programmatically inverting the colors of an image possible?

http://stackoverflow.com/questions/6672517/is-programmatically-inverting-the-colors-of-an-image-possible

as integers since we'll be using them as array subscripts etc and this'll save a whole lot of casting CGSize size self.size int width size.width int height size.height Create a suitable RGB alpha bitmap context in BGRA colour space CGColorSpaceRef..