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2014/10/15 ¤U¤È 10:05:04

iphone Programming Glossary: cgimagecreatewithpngdataprovider

iPhone SDK: accessing indexed color PNG images

http://stackoverflow.com/questions/3251595/iphone-sdk-accessing-indexed-color-png-images

iphone objective c png share improve this question By loading the image as a CGImage rather than an UIImage using CGImageCreateWithPNGDataProvider you might be able to get an indexed color space. See http developer.apple.com iphone library documentation GraphicsImaging.. file failed n CGDataProviderRef src CGDataProviderCreateWithCFData file if src printf image failed n CGImageRef img CGImageCreateWithPNGDataProvider src NULL NO kCGRenderingIntentDefault if img printf image failed n printf Color space model d indexed d n CGColorSpaceGetModel..

How exactly to make a CGImageRef from an image on disk

http://stackoverflow.com/questions/3550201/how-exactly-to-make-a-cgimageref-from-an-image-on-disk

the following would work. CGDataProviderRef dataProvider CGDataProviderCreateWithFilename file CGImageRef image CGImageCreateWithPNGDataProvider dataProvider NULL NO kCGRenderingIntentDefault There is also a function for jpg images CGImageCreateWithJPEGDataProvider..

Drawing in CATiledLayer with CoreGraphics CGContextDrawImage

http://stackoverflow.com/questions/4067512/drawing-in-catiledlayer-with-coregraphics-cgcontextdrawimage

png if path nil NSURL imageURL NSURL fileURLWithPath path provider CGDataProviderCreateWithURL CFURLRef imageURL image CGImageCreateWithPNGDataProvider provider NULL FALSE kCGRenderingIntentDefault CFRelease provider return image There's still a bit of work to be done on..

iOS SDK - Programmatically generate a PDF file

http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file

CFSTR png NULL CFRelease picturePath provider CGDataProviderCreateWithURL pictureURL CFRelease pictureURL image CGImageCreateWithPNGDataProvider provider NULL true kCGRenderingIntentDefault CGDataProviderRelease provider CGContextDrawImage pdfContext CGRectMake 200..

Convert html file to PDF Document in iOS using Cocoa-Touch

http://stackoverflow.com/questions/6316192/convert-html-file-to-pdf-document-in-ios-using-cocoa-touch

CFSTR png NULL CFRelease picturePath provider CGDataProviderCreateWithURL pictureURL CFRelease pictureURL image CGImageCreateWithPNGDataProvider provider NULL true kCGRenderingIntentDefault CGDataProviderRelease provider CGContextDrawImage pdfContext CGRectMake 200..