2014/10/15 下午 10:05:04

iphone Programming Glossary: cgimagecreatewithmask

Any idea why this image masking code does not work?

http://stackoverflow.com/questions/1133248/any-idea-why-this-image-masking-code-does-not-work

maskRef CGImageGetBytesPerRow maskRef CGImageGetDataProvider maskRef NULL false CGImageRef masked CGImageCreateWithMask image CGImage mask return UIImage imageWithCGImage masked here's what I do with that UIImage image UIImage imageNamed @..

How can i add two uiimageview and save it to iphone photo gallery in iphone application development?

http://stackoverflow.com/questions/12453913/how-can-i-add-two-uiimageview-and-save-it-to-iphone-photo-gallery-in-iphone-appl

maskRef CGImageGetBytesPerRow maskRef CGImageGetDataProvider maskRef NULL false CGImageRef masked CGImageCreateWithMask image CGImage mask CGImageRelease mask CGImageRelease maskRef return UIImage imageWithCGImage masked @end my design will..

iPhone development: pointer being freed was not allocated

http://stackoverflow.com/questions/1424210/iphone-development-pointer-being-freed-was-not-allocated

unmasked CGBitmapContextCreateImage context2 const float myMaskingColorsFrameColor 6 1 256 1 256 1 256 CGImageRef mask CGImageCreateWithMaskingColors unmasked myMaskingColorsFrameColor CGContextSetRGBFillColor context 256 256 256 1 CGContextFillRect context rect.. 0 sp.image.size.height CGContextScaleCTM context2 1.0 1.0 Create masked overlay color layer CGImageRef MaskedImage CGImageCreateWithMask baseColor.CGImage mask.CGImage Draw the base color layer CGContextDrawImage context2 rect MaskedImage Get the result of..

Extracting images from a PDF

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

interpolation renderingIntent CGDataProviderRelease dataProvider cgImage sourceImage if maskImage NULL cgImage CGImageCreateWithMask sourceImage maskImage CGImageRelease sourceImage CGImageRelease maskImage else cgImage sourceImage else if format CGPDFDataFormatJPEGEncoded.. interpolation renderingIntent CGDataProviderRelease dataProvider cgImage sourceImage if maskImage NULL cgImage CGImageCreateWithMask sourceImage maskImage CGImageRelease sourceImage CGImageRelease maskImage else cgImage sourceImage note that we could..

UIImage rounded corners

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

mainViewContentContext CGImageRef maskImage UIImage imageNamed @ Mask.png CGImage CGImageRef resizedImage CGImageCreateWithMask mainViewContentBitmapContext maskImage CGImageRelease mainViewContentBitmapContext convert the finished resized image to..

Inner Shadow in UILabel

http://stackoverflow.com/questions/3231690/inner-shadow-in-uilabel

font text_ drawAtPoint CGPointMake self.bounds.size.width 2 fontSize.width 2 1 withFont font CGImageRef cutoutRef CGImageCreateWithMask self blackSquareOfSize rect.size .CGImage mask CGImageRelease mask UIImage cutout UIImage imageWithCGImage cutoutRef scale.. font UIImage negative UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext CGImageRef innerShadowRef CGImageCreateWithMask negative.CGImage shadedMask CGImageRelease shadedMask UIImage innerShadow UIImage imageWithCGImage innerShadowRef scale..

CGImageCreateWithMask works great but the masked out area is black in my resulting image, how can I set it to be white?

http://stackoverflow.com/questions/3848430/cgimagecreatewithmask-works-great-but-the-masked-out-area-is-black-in-my-resulti

works great but the masked out area is black in my resulting image how can I set it to be white I've masked out my image.. maskRef CGImageGetDataProvider maskRef nil YES UIImage image UIImage imageWithContentsOfFile path CGImageRef masked CGImageCreateWithMask image CGImage mask imageView.image UIImage imageWithCGImage masked And it works great but the resulting image has BLACK..

how to add watermark on a exist image

http://stackoverflow.com/questions/4068035/how-to-add-watermark-on-a-exist-image

UIGraphicsEndImageContext but I am not sure whether this best way. iphone share improve this question check CGImageCreateWithMask.Pass the existing image and the watermark image to this function UIImage maskImage UIImage image withMask UIImage maskImage..

How to Mask an UIImageView

http://stackoverflow.com/questions/5757386/how-to-mask-an-uiimageview

maskRef CGImageGetBytesPerRow maskRef CGImageGetDataProvider maskRef NULL false CGImageRef maskedImageRef CGImageCreateWithMask image CGImage mask UIImage maskedImage UIImage imageWithCGImage maskedImageRef CGImageRelease mask CGImageRelease maskedImageRef..

How to implement alpha gradient on a image?

http://stackoverflow.com/questions/5908731/how-to-implement-alpha-gradient-on-a-image

Any advice tutorial link is welcome. iphone ios gradient alpha quartz 2d share improve this question You can use CGImageCreateWithMask to apply a masking image to it. You could generate an appropriate mask simply enough by drawing to a greyscale or alpha..

Creating mask with CGImageMaskCreate is all black (iphone)

http://stackoverflow.com/questions/633051/creating-mask-with-cgimagemaskcreate-is-all-black-iphone

maskRef CGImageGetBytesPerRow maskRef CGImageGetDataProvider maskRef NULL false CGImageRef masked CGImageCreateWithMask image CGImage mask UIImage retImage UIImage imageWithCGImage masked The problem is that the retImage is all black. If I.. objective c cocoa touch image manipulation quartz graphics share improve this question I tried the same thing with CGImageCreateWithMask and got the same result. The solution I found was to use CGContextClipToMask instead CGContextRef mainViewContentContext..

Is there an SDK to draw lines on iOS with touch?

http://stackoverflow.com/questions/6774352/is-there-an-sdk-to-draw-lines-on-ios-with-touch

maskRef CGImageGetBytesPerRow maskRef CGImageGetDataProvider maskRef NULL false CGImageRef masked CGImageCreateWithMask image CGImage mask UIImage tempImage UIImage alloc initWithCGImage masked self.clippedImage tempImage tempImage release..

How to mask an image in IOS sdk?

http://stackoverflow.com/questions/9872975/how-to-mask-an-image-in-ios-sdk