¡@

Home 

2014/10/15 ¤U¤È 10:14:19

iphone Programming Glossary: sourceimage

iOS PNG Image rotated 90 degrees

http://stackoverflow.com/questions/10307521/ios-png-image-rotated-90-degrees

property you can construct an otherwise identical image with different orientation like this CGImageRef imageRef sourceImage CGImage UIImage rotatedImage UIImage imageWithCGImage imageRef scale 1.0 orientation UIImageOrientationUp You may need to..

Resizing UIimages pulled from the Camera also ROTATES the UIimage?

http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage

the image and swap width height. Here is some code to do this UIImage imageByScalingToSize CGSize targetSize UIImage sourceImage self CGFloat targetWidth targetSize.width CGFloat targetHeight targetSize.height CGImageRef imageRef sourceImage CGImage.. sourceImage self CGFloat targetWidth targetSize.width CGFloat targetHeight targetSize.height CGImageRef imageRef sourceImage CGImage CGBitmapInfo bitmapInfo CGImageGetBitmapInfo imageRef CGColorSpaceRef colorSpaceInfo CGImageGetColorSpace imageRef.. imageRef if bitmapInfo kCGImageAlphaNone bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL..

How to Rotate a UIImage 90 degrees?

http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees

while preserving the current size UIImage reverseImageByScalingToSize CGSize targetSize UIImage anImage UIImage sourceImage anImage CGFloat targetWidth targetSize.height CGFloat targetHeight targetSize.width CGImageRef imageRef sourceImage CGImage.. sourceImage anImage CGFloat targetWidth targetSize.height CGFloat targetHeight targetSize.width CGImageRef imageRef sourceImage CGImage CGBitmapInfo bitmapInfo CGImageGetBitmapInfo imageRef CGColorSpaceRef colorSpaceInfo CGImageGetColorSpace imageRef.. imageRef if bitmapInfo kCGImageAlphaNone bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL..

Extracting images from a PDF

http://stackoverflow.com/questions/2475450/extracting-images-from-a-pdf

colorSpaceName NULL renderingIntentName NULL CFDataRef imageDataPtr NULL CGImageRef cgImage maskImage NULL CGImageRef sourceImage NULL CGDataProviderRef dataProvider CGColorRenderingIntent renderingIntent CGFloat decodeValues NULL UIImage image if myStream.. to byte alignment if rowBits 8 0 rowBytes maskImage SMaskImageFromImageDictionary dict if format CGPDFDataFormatRaw sourceImage CGImageCreate width height bps bps spp rowBytes cgColorSpace 0 dataProvider decodeValues interpolation renderingIntent CGDataProviderRelease.. cgColorSpace 0 dataProvider decodeValues interpolation renderingIntent CGDataProviderRelease dataProvider cgImage sourceImage if maskImage NULL cgImage CGImageCreateWithMask sourceImage maskImage CGImageRelease sourceImage CGImageRelease maskImage..

UIImage: Resize, then Crop

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

#pragma mark #pragma mark Scale and crop image UIImage imageByScalingAndCroppingForSize CGSize targetSize UIImage sourceImage self UIImage newImage nil CGSize imageSize sourceImage.size CGFloat width imageSize.width CGFloat height imageSize.height.. 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 targetHeight.. thumbnailRect.origin thumbnailPoint thumbnailRect.size.width scaledWidth thumbnailRect.size.height scaledHeight sourceImage drawInRect thumbnailRect newImage UIGraphicsGetImageFromCurrentImageContext if newImage nil NSLog @ could not scale image..