2014/10/15 下午 10:07:36

iphone Programming Glossary: drawimage

Bug in iPad's html5 canvas drawimage() implementation?

http://stackoverflow.com/questions/2878580/bug-in-ipads-html5-canvas-drawimage-implementation

implementation After some grueling debugging I think I have found a bug in the iPad Safari's implementation of canvas.drawImage . Specifically this overload void drawImage in HTMLImageElement image in float sx in float sy in float sw in float sh in.. I think I have found a bug in the iPad Safari's implementation of canvas.drawImage . Specifically this overload void drawImage in HTMLImageElement image in float sx in float sy in float sw in float sh in float dx in float dy in float dw in float dh.. .getContext '2d' var timg new Image timg.onload function ctx.fillStyle 'rgb 100 100 100 ' ctx.fillRect 0 0 256 256 ctx.drawImage timg 0 0 128 128 0 0 63 63 ctx.drawImage timg 0 0 128 128 128 0 65 65 timg.src http amirshimoni.com ipadbug1 1234.jpg..

Return a subimage from a UIImage

http://stackoverflow.com/questions/4475881/return-a-subimage-from-a-uiimage

way of doing the same thing is the following CGRect fromRect CGRectMake 0 0 320 480 or whatever rectangle CGImageRef drawImage CGImageCreateWithImageInRect image.CGImage fromRect UIImage newImage UIImage imageWithCGImage drawImage CGImageRelease drawImage..

How to remove view and redraw it

http://stackoverflow.com/questions/6256516/how-to-remove-view-and-redraw-it

void buttonpressed NSString allElements myarray componentsJoinedByString @ NSLog @ @ allElements void buttonclear drawImage removeFromSuperview UIGraphicsBeginImageContext CGSizeMake self.view.frame.size.height self.view.frame.size.width drawImage.. removeFromSuperview UIGraphicsBeginImageContext CGSizeMake self.view.frame.size.height self.view.frame.size.width drawImage UIImageView alloc initWithImage nil drawImage.image drawInRect CGRectMake 0 0 self.view.frame.size.height self.view.frame.size.width.. CGSizeMake self.view.frame.size.height self.view.frame.size.width drawImage UIImageView alloc initWithImage nil drawImage.image drawInRect CGRectMake 0 0 self.view.frame.size.height self.view.frame.size.width drawImage.frame self.view.frame self.view..

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

DrawingModePen 0 DrawingModeEraser 1 DrawingMode @interface DrawingView UIView CGPoint lastPoint UIImageView drawImage BOOL mouseSwiped int mouseMoved DrawingMode mode UIColor _drawingPenColor @property nonatomic retain UIColor drawingPenColor.. nonatomic DrawingMode mode @property nonatomic retain UIImageView imageView @property nonatomic retain UIImageView drawImage @end .m #import DrawingView.h @implementation DrawingView @synthesize mode drawingPenColor _drawingPenColor imageView drawImage.. @end .m #import DrawingView.h @implementation DrawingView @synthesize mode drawingPenColor _drawingPenColor imageView drawImage void initialize drawImage UIImageView alloc initWithImage nil self.autoresizesSubviews YES drawImage.autoresizingMask UIViewAutoresizingFlexibleWidth..

draw a line in UIImageView problem

http://stackoverflow.com/questions/680855/draw-a-line-in-uiimageview-problem

have scratch my head all the days and cannot find out the problem void drawLine lastPoint currentPoint lastPoint.y 40 drawImage is a UIImageView declared at header UIGraphicsBeginImageContext drawImage.frame.size drawImage.image drawInRect CGRectMake.. lastPoint currentPoint lastPoint.y 40 drawImage is a UIImageView declared at header UIGraphicsBeginImageContext drawImage.frame.size drawImage.image drawInRect CGRectMake 0 0 drawImage.frame.size.width drawImage.frame.size.height sets the style.. lastPoint.y 40 drawImage is a UIImageView declared at header UIGraphicsBeginImageContext drawImage.frame.size drawImage.image drawInRect CGRectMake 0 0 drawImage.frame.size.width drawImage.frame.size.height sets the style for the endpoints..

Overlay an image over another image in iOS

http://stackoverflow.com/questions/7313023/overlay-an-image-over-another-image-in-ios

you are concerned with table scrolling performance retrieve the thumbnail and paint the play button over it. UIImage drawImage UIImage fgImage inImage UIImage bgImage atPoint CGPoint point UIGraphicsBeginImageContextWithOptions bgImage.size FALSE..

how to create an application which allows user to free hand drawing? [closed]

http://stackoverflow.com/questions/8207913/how-to-create-an-application-which-allows-user-to-free-hand-drawing

touchesBegan NSSet touches withEvent UIEvent event mouseSwiped NO UITouch touch touches anyObject if touch tapCount 2 drawImage setImage UIImage imageWithContentsOfFile NSBundle mainBundle pathForResource @ white ofType @ png return lastPoint touch.. withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView self.drawImage currentPoint.y 20 NSLog @ current Point is x d y d currentPoint.x currentPoint.y UIGraphicsBeginImageContext self.drawImage.frame.size.. currentPoint.y 20 NSLog @ current Point is x d y d currentPoint.x currentPoint.y UIGraphicsBeginImageContext self.drawImage.frame.size drawImage.image drawInRect CGRectMake 0 0 self.drawImage.frame.size.width self.drawImage.frame.size.height CGContextSetLineCap..

draw line between two points in iphone?

http://stackoverflow.com/questions/8208469/draw-line-between-two-points-in-iphone

CGContextStrokePath not working when zooming and drawing images

http://stackoverflow.com/questions/9281220/cgcontextstrokepath-not-working-when-zooming-and-drawing-images

anyObject CGPoint currentPoint touch locationInView myImageView UIGraphicsBeginImageContext myImageView.frame.size drawImage.image drawInRect CGRectMake 0 0 myImageView.frame.size.width myImageView.frame.size.height CGContextSetLineCap UIGraphicsGetCurrentContext.. UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext drawImage.image UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext lastPoint currentPoint else multi touch case handle.. your project and I found the problem is of autoresizing. The following steps will solve it Step 1. Comment the line 70 drawImage.frame CGRectMake 0 0 labOrderImgView.frame.size.width labOrderImgView.frame.size.height in your touchesMoved method. Step..