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2014/10/15 ¤U¤È 10:10:12

iphone Programming Glossary: imagesize

How to programmatically change the hue of UIImage?

http://stackoverflow.com/questions/11555071/how-to-programmatically-change-the-hue-of-uiimage

from 0.0 to 1.0 both red. Values outside this range will be clamped to 0.0 or 1.0. Find the image dimensions. CGSize imageSize source size CGRect imageExtent CGRectMake 0 0 imageSize.width imageSize.height Create a context containing the image. UIGraphicsBeginImageContext.. be clamped to 0.0 or 1.0. Find the image dimensions. CGSize imageSize source size CGRect imageExtent CGRectMake 0 0 imageSize.width imageSize.height Create a context containing the image. UIGraphicsBeginImageContext imageSize CGContextRef context.. 0.0 or 1.0. Find the image dimensions. CGSize imageSize source size CGRect imageExtent CGRectMake 0 0 imageSize.width imageSize.height Create a context containing the image. UIGraphicsBeginImageContext imageSize CGContextRef context UIGraphicsGetCurrentContext..

Center content of UIScrollView when smaller

http://stackoverflow.com/questions/1316451/center-content-of-uiscrollview-when-smaller

setTag ZOOM_VIEW_TAG imageScrollView setContentSize imageView frame .size imageScrollView addSubview imageView CGSize imageSize imageView.image.size imageView release CGSize maxSize imageScrollView.frame.size CGFloat widthRatio maxSize.width imageSize.width.. imageView.image.size imageView release CGSize maxSize imageScrollView.frame.size CGFloat widthRatio maxSize.width imageSize.width CGFloat heightRatio maxSize.height imageSize.height CGFloat initialZoom widthRatio heightRatio heightRatio widthRatio.. maxSize imageScrollView.frame.size CGFloat widthRatio maxSize.width imageSize.width CGFloat heightRatio maxSize.height imageSize.height CGFloat initialZoom widthRatio heightRatio heightRatio widthRatio imageScrollView setMinimumZoomScale initialZoom..

Upload live streaming video from iPhone like Ustream or Qik

http://stackoverflow.com/questions/1960782/upload-live-streaming-video-from-iphone-like-ustream-or-qik

AVCaptureConnection connection CVImageBufferRef imageBuffer CMSampleBufferGetImageBuffer sampleBuffer CGSize imageSize CVImageBufferGetEncodedSize imageBuffer also in the 'mediaSpecific' dict of the sampleBuffer NSLog @ frame captured at .fx.. imageBuffer also in the 'mediaSpecific' dict of the sampleBuffer NSLog @ frame captured at .fx .f imageSize.width imageSize.height EDIT UPDATE Several people have asked how to do this without sending the frames to the server one.. imageBuffer also in the 'mediaSpecific' dict of the sampleBuffer NSLog @ frame captured at .fx .f imageSize.width imageSize.height EDIT UPDATE Several people have asked how to do this without sending the frames to the server one by one. The answer..

MFMailComposeViewController image orientation

http://stackoverflow.com/questions/20204495/mfmailcomposeviewcontroller-image-orientation

kMaxResolution bounds.size.width bounds.size.height ratio CGFloat scaleRatio bounds.size.width width CGSize imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef UIImageOrientation orient imageIn.imageOrientation CGFloat boundHeight.. CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale transform 1.0 1.0 break case UIImageOrientationDown EXIF 3 transform CGAffineTransformMakeTranslation.. transform 1.0 1.0 break case UIImageOrientationDown EXIF 3 transform CGAffineTransformMakeTranslation imageSize.width imageSize.height transform CGAffineTransformRotate transform M_PI break case UIImageOrientationDownMirrored EXIF..

UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?

http://stackoverflow.com/questions/2451223/uibutton-how-to-center-an-image-and-a-text-using-imageedgeinsets-and-titleedgei

the image and text CGFloat spacing 6.0 lower the text and push it left so it appears centered below the image CGSize imageSize button.imageView.frame.size button.titleEdgeInsets UIEdgeInsetsMake 0.0 imageSize.width imageSize.height spacing 0.0 raise.. centered below the image CGSize imageSize button.imageView.frame.size button.titleEdgeInsets UIEdgeInsetsMake 0.0 imageSize.width imageSize.height spacing 0.0 raise the image and push it right so it appears centered above the text CGSize titleSize.. the image CGSize imageSize button.imageView.frame.size button.titleEdgeInsets UIEdgeInsetsMake 0.0 imageSize.width imageSize.height spacing 0.0 raise the image and push it right so it appears centered above the text CGSize titleSize button.titleLabel.frame.size..

UIImage rounded corners

http://stackoverflow.com/questions/262156/uiimage-rounded-corners

is always nil and I don't find the error... UIImage imageByScalingProportionallyToSize CGSize targetSize CGSize imageSize self size float width imageSize.width float height imageSize.height scaleFactor will be the fraction that we'll use to adjust.. find the error... UIImage imageByScalingProportionallyToSize CGSize targetSize CGSize imageSize self size float width imageSize.width float height imageSize.height scaleFactor will be the fraction that we'll use to adjust the size. For example if we.. CGSize targetSize CGSize imageSize self size float width imageSize.width float height imageSize.height scaleFactor will be the fraction that we'll use to adjust the size. For example if we shrink an image by half scaleFactor..

Convert Image to B&W problem CGContext - iPhone Dev

http://stackoverflow.com/questions/3340564/convert-image-to-bw-problem-cgcontext-iphone-dev

kMaxResolution bounds.size.width bounds.size.height ratio CGFloat scaleRatio bounds.size.width width CGSize imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation.. CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale transform 1.0 1.0 break case UIImageOrientationDown EXIF 3 transform CGAffineTransformMakeTranslation.. transform 1.0 1.0 break case UIImageOrientationDown EXIF 3 transform CGAffineTransformMakeTranslation imageSize.width imageSize.height transform CGAffineTransformRotate transform M_PI break case UIImageOrientationDownMirrored EXIF 4..

Curve text on existing circle

http://stackoverflow.com/questions/3841642/curve-text-on-existing-circle

currently at this point I accomplish by using the following code UIImage createMenuRingWithFrame CGRect frame CGRect imageSize CGRectMake 0 0 300 300 float perSectionDegrees 360 sections count float totalRotation 90 char fontName char self.menuItemsFont.fontName.. CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate NULL imageSize.size.width imageSize.size.height 8 4 imageSize.size.width colorSpace kCGImageAlphaPremultipliedFirst CGContextSetTextMatrix.. colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate NULL imageSize.size.width imageSize.size.height 8 4 imageSize.size.width colorSpace kCGImageAlphaPremultipliedFirst CGContextSetTextMatrix context CGAffineTransformIdentity..

Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints?

http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints

baseImage.size.height self.bounds.size.height CGFloat imageScaleFactor MAX scaleForWidth scaleForHeight CGSize imageSize CGSizeMake baseImage.size.width imageScaleFactor baseImage.size.height imageScaleFactor CGRect imageRect CGRectMake self.bounds.size.width.. imageScaleFactor baseImage.size.height imageScaleFactor CGRect imageRect CGRectMake self.bounds.size.width imageSize.width 2 self.bounds.size.height imageSize.height 2 imageSize.width imageSize.height CGContextDrawImage context imageRect.. imageScaleFactor CGRect imageRect CGRectMake self.bounds.size.width imageSize.width 2 self.bounds.size.height imageSize.height 2 imageSize.width imageSize.height CGContextDrawImage context imageRect baseImage CGImage else @synchronized issue..

Drawing waveform with AVAssetReader

http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader

sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight float imageHeight CGSize imageSize CGSizeMake sampleCount imageHeight UIGraphicsBeginImageContext imageSize CGContextRef context UIGraphicsGetCurrentContext.. imageHeight float imageHeight CGSize imageSize CGSizeMake sampleCount imageHeight UIGraphicsBeginImageContext imageSize CGContextRef context UIGraphicsGetCurrentContext CGContextSetFillColorWithColor context UIColor blackColor .CGColor CGContextSetAlpha.. CGContextSetFillColorWithColor context UIColor blackColor .CGColor CGContextSetAlpha context 1.0 CGRect rect rect.size imageSize rect.origin.x 0 rect.origin.y 0 CGColorRef leftcolor UIColor whiteColor CGColor CGColorRef rightcolor UIColor redColor CGColor..

Uploading live streaming video from iPhone [duplicate]

http://stackoverflow.com/questions/5062266/uploading-live-streaming-video-from-iphone

AVCaptureConnection connection CVImageBufferRef imageBuffer CMSampleBufferGetImageBuffer sampleBuffer CGSize imageSize CVImageBufferGetEncodedSize imageBuffer also in the 'mediaSpecific' dict of the sampleBuffer NSLog @ frame captured at .fx.. imageBuffer also in the 'mediaSpecific' dict of the sampleBuffer NSLog @ frame captured at .fx .f imageSize.width imageSize.height EDIT UPDATE Several people have asked how to do this without sending the frames to the server one.. imageBuffer also in the 'mediaSpecific' dict of the sampleBuffer NSLog @ frame captured at .fx .f imageSize.width imageSize.height EDIT UPDATE Several people have asked how to do this without sending the frames to the server one by one. The answer..

UIImagePickerController camera preview is portrait in landscape app

http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app

kMaxResolution bounds.size.width roundf bounds.size.height ratio CGFloat scaleRatio bounds.size.width width CGSize imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation.. CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale transform 1.0 1.0 break case UIImageOrientationDown EXIF 3 transform CGAffineTransformMakeTranslation.. transform 1.0 1.0 break case UIImageOrientationDown EXIF 3 transform CGAffineTransformMakeTranslation imageSize.width imageSize.height transform CGAffineTransformRotate transform M_PI break case UIImageOrientationDownMirrored EXIF 4..

UIImage: Resize, then Crop

http://stackoverflow.com/questions/603907/uiimage-resize-then-crop

image UIImage imageByScalingAndCroppingForSize CGSize targetSize UIImage sourceImage self UIImage newImage nil CGSize imageSize sourceImage.size CGFloat width imageSize.width CGFloat height imageSize.height CGFloat targetWidth targetSize.width CGFloat.. CGSize targetSize UIImage sourceImage self UIImage newImage nil CGSize imageSize sourceImage.size CGFloat width imageSize.width CGFloat height imageSize.height CGFloat targetWidth targetSize.width CGFloat targetHeight targetSize.height CGFloat.. sourceImage self UIImage newImage nil CGSize imageSize sourceImage.size CGFloat width imageSize.width CGFloat height imageSize.height CGFloat targetWidth targetSize.width CGFloat targetHeight targetSize.height CGFloat scaleFactor 0.0 CGFloat scaledWidth..