2014/10/15 下午 10:05:02

iphone Programming Glossary: cgcontextsetstrokecolorwithcolor

iPhone: why isn't drawRect getting called?

http://stackoverflow.com/questions/1053761/iphone-why-isnt-drawrect-getting-called

currentColor UIColor redColor CGContextRef context UIGraphicsGetCurrentContext CGContextSetLineWidth context 2.0 CGContextSetStrokeColorWithColor context currentColor.CGColor CGContextSetFillColorWithColor context currentColor.CGColor CGContextAddEllipseInRect context..

How to create a UIImage from the current graphics context?

http://stackoverflow.com/questions/1112947/how-to-create-a-uiimage-from-the-current-graphics-context

looks like for me now void drawRect CGRect rect CGContextRef c UIGraphicsGetCurrentContext CGContextSaveGState c CGContextSetStrokeColorWithColor c UIColor blackColor .CGColor CGContextSetLineWidth c 1.5f for CFIndex i 0 i CFArrayGetCount _pathArray i CGPathRef path..

How to Unerase the erased UIImage

http://stackoverflow.com/questions/14053563/how-to-unerase-the-erased-uiimage

CGContextSetLineCap context kCGLineCapRound CGContextSetLineWidth context brushSize if isEraser CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext UIColor colorWithPatternImage self.im .CGColor else CGContextSetStrokeColorWithColor context.. CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext UIColor colorWithPatternImage self.im .CGColor else CGContextSetStrokeColorWithColor context strokeColor CGContextSetBlendMode context kCGBlendModeClear CGContextBeginPath context CGContextMoveToPoint context.. self.editedImageView.image Your Custom image self.im Your Custom image The simple solution of your problem will be CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext UIColor colorWithPatternImage self.im .CGColor Note This not unerase it again drawing the image..

Break on EXC_BAD_ACCESS in XCode?

http://stackoverflow.com/questions/1622079/break-on-exc-bad-access-in-xcode

the problem but I do see the following lines in my debug console Sun Oct 25 15 12 14 jasonsmacbook TestProject 1289 CGContextSetStrokeColorWithColor invalid context Sun Oct 25 15 12 14 jasonsmacbook TestProject 1289 CGContextSetLineWidth invalid context Sun Oct 25 15 12..

Setting A CGContext Transparent Background

http://stackoverflow.com/questions/2125543/setting-a-cgcontext-transparent-background

context UIColor clearColor .CGColor CGContextSetAlpha context 0.0 CGContextFillRect context rect CGContextSetStrokeColorWithColor context UIColor whiteColor .CGColor CGContextSetLineWidth context 5.0 CGContextMoveToPoint context 100.0 0.0 CGContextAddLineToPoint.. return self void drawRect CGRect rect CGContextRef context UIGraphicsGetCurrentContext CGContextClearRect context rect CGContextSetStrokeColorWithColor context UIColor whiteColor .CGColor CGContextSetLineWidth context 5.0 CGContextMoveToPoint context 100.0 0.0 CGContextAddLineToPoint..

want to add manual erasing option in ipad painting application by quartz

http://stackoverflow.com/questions/3863931/want-to-add-manual-erasing-option-in-ipad-painting-application-by-quartz

UIGraphicsGetCurrentContext kCGLineCapRound CGContextSetLineWidth UIGraphicsGetCurrentContext lineWidth CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext UIColor colorWithPatternImage img .CGColor CGContextSetFillColorWithColor UIGraphicsGetCurrentContext..

How to customize the background/border colors of a grouped table view cell?

http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell

CGRect rect Drawing code CGContextRef c UIGraphicsGetCurrentContext CGContextSetFillColorWithColor c fillColor CGColor CGContextSetStrokeColorWithColor c borderColor CGColor if position CustomCellBackgroundViewPositionTop CGContextFillRect c CGRectMake 0.0f rect.size.height..

How to draw a “speech bubble” on an iPhone?

http://stackoverflow.com/questions/4442126/how-to-draw-a-speech-bubble-on-an-iphone

currentFrame self.bounds CGContextSetLineJoin context kCGLineJoinRound CGContextSetLineWidth context strokeWidth CGContextSetStrokeColorWithColor context MyPopupLayer popupBorderColor CGContextSetFillColorWithColor context MyPopupLayer popupBackgroundColor Draw and..

Drawing waveform with AVAssetReader

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

CGContextMoveToPoint context intSample centerLeft pixels CGContextAddLineToPoint context intSample centerLeft pixels CGContextSetStrokeColorWithColor context leftcolor CGContextStrokePath context if channelCount 2 SInt16 right samples float pixels float right pixels sampleAdjustmentFactor.. CGContextMoveToPoint context intSample centerRight pixels CGContextAddLineToPoint context intSample centerRight pixels CGContextSetStrokeColorWithColor context rightcolor CGContextStrokePath context Create new image UIImage newImage UIGraphicsGetImageFromCurrentImageContext.. CGContextMoveToPoint context intSample centerLeft pixels CGContextAddLineToPoint context intSample centerLeft pixels CGContextSetStrokeColorWithColor context leftcolor CGContextStrokePath context if channelCount 2 Float32 right samples float pixels right noiseFloor sampleAdjustmentFactor..

UITextView ruled line background but wrong line height

http://stackoverflow.com/questions/5375350/uitextview-ruled-line-background-but-wrong-line-height

rect Get the current drawing context CGContextRef context UIGraphicsGetCurrentContext Set the line color and width CGContextSetStrokeColorWithColor context UIColor colorWithRed 0.0f green 0.0f blue 0.0f alpha 0.2f .CGColor CGContextSetLineWidth context 1.0f Start a new..

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

kCGLineCapRound CGContextSetLineWidth UIGraphicsGetCurrentContext 5.0 if mode DrawingModePen NSLog @ drawing CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext _drawingPenColor CGColor else CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext UIColor.. NSLog @ drawing CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext _drawingPenColor CGColor else CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext UIColor clearColor CGColor CGContextBeginPath UIGraphicsGetCurrentContext CGContextMoveToPoint.. lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y if mode DrawingModePen CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext _drawingPenColor CGColor else CGContextSetStrokeColorWithColor UIGraphicsGetCurrentContext..