2014/10/15 下午 10:14:34

iphone Programming Glossary: stroke

Alpha transparent PNGs not displaying correctly in Mobile Safari

http://stackoverflow.com/questions/1374618/alpha-transparent-pngs-not-displaying-correctly-in-mobile-safari

it wasn't my process of creating the image. Sure enough that worked perfectly so my process is good. Then I had this stroke of genius what if the file were larger than 1 pixel So I made it 2 pixels wide and 1 pixel high 20 transparent alpha of..

how to draw airbrush on UIImageView?

http://stackoverflow.com/questions/3412526/how-to-draw-airbrush-on-uiimageview

I think you might be looking for CGContextBeginPath and its related functions. I am not quite sure how to define a new stroke but I imagine it can be handled with something like UIColor colorFromImage myImage . You should look into Quartz 2D try..

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 here img is ur background image then on move touch you simple write the line stroke code that code is this UITouch touch touches anyObject CGPoint currentPoint touch locationInView imgview NSLog @ asdasdas..

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

rounded corners so we return At this point the clip rect is set to only draw the appropriate corners so we fill and stroke a rounded rect taking the entire rect CGContextBeginPath c addRoundedRectToPath c rect 10.0f 10.0f CGContextFillPath c CGContextSetLineWidth..

How To Draw line on touch event?

http://stackoverflow.com/questions/4669490/how-to-draw-line-on-touch-event

self self setNeedsDisplay void drawRect CGRect rect UIColor redColor set for UIBezierPath path in paths path stroke Note that this is simplified a lot. If you draw many lines performance will suffer and eventually you'll want to cache the..

Drawing bezier curves with my finger in iOS?

http://stackoverflow.com/questions/4672646/drawing-bezier-curves-with-my-finger-in-ios

endPt.y 2 cPt2 CGPoint endPt.x cPt1.y void drawRect CGRect rect UIBezierPath path self.curvePath if path path stroke void touchesBegan NSSet touches withEvent UIEvent event if currentTouch return if state BezierStateNone state BezierStateDefiningLine..

How do I detect a touch on a UIBezierPath and move a ball along that?

http://stackoverflow.com/questions/4854035/how-do-i-detect-a-touch-on-a-uibezierpath-and-move-a-ball-along-that

CGContextRef aRef UIGraphicsGetCurrentContext CGContextTranslateCTM aRef 50 50 aShape.lineWidth 5 aShape fill aShape stroke aShape closePath CGPoint x CGPointMake 30 40 if aShape containsPoint x NSLog @ in else NSLog @ out void touchesBegan NSSet..

How to draw graphics in iphone gesture?

http://stackoverflow.com/questions/6173685/how-to-draw-graphics-in-iphone-gesture

How to draw a transparent stroke (or anyway clear part of an image) on the iPhone

http://stackoverflow.com/questions/629409/how-to-draw-a-transparent-stroke-or-anyway-clear-part-of-an-image-on-the-iphon

to draw a transparent stroke or anyway clear part of an image on the iPhone I have a small app that allows the user to draw on the screen with the finger... have a UIImageView where the user draws by creating a CGContextRef and the various CG draw functions. I primarily draw strokes lines with the function CGContextAddLineToPoint Now my issue is this The user can draw lines of various colors. I want.. to delete some part of the image drawn so far with the finger. I initially did this by using a white color for the stroke set with the CGContextSetRGBStrokeColor function but it didn't work out...because I discovered later that the UIImage on..

Why is UIBezierPath faster than Core Graphics path?

http://stackoverflow.com/questions/6327817/why-is-uibezierpath-faster-than-core-graphics-path

CGPointMake x2 uiBaseline 50 UIColor blackColor setStroke CGContextAddPath ctx cgpath Stroke each path. self strokeContext ctx self strokeUIBezierPath uipath uipath release CGPathRelease cgpath void strokeContext CGContextRef context CGContextStrokePath.. uiBaseline 50 UIColor blackColor setStroke CGContextAddPath ctx cgpath Stroke each path. self strokeContext ctx self strokeUIBezierPath uipath uipath release CGPathRelease cgpath void strokeContext CGContextRef context CGContextStrokePath context.. Stroke each path. self strokeContext ctx self strokeUIBezierPath uipath uipath release CGPathRelease cgpath void strokeContext CGContextRef context CGContextStrokePath context void strokeUIBezierPath UIBezierPath path path stroke Both paths..

How do I use a UIWebView in a Table Cell?

http://stackoverflow.com/questions/646809/how-do-i-use-a-uiwebview-in-a-table-cell

update the WebView for example if I touch a link which I may or may not do since the box is gray and it would be by a stroke of luck the page that was linked to will be requested and displayed properly. id initWithFrame CGRect frame reuseIdentifier..

Blur Effect (Wet in Wet effect) in Paint Application Using OpenGL-ES

http://stackoverflow.com/questions/6980402/blur-effect-wet-in-wet-effect-in-paint-application-using-opengl-es

Thanks.. iphone ios ipad opengl es paint share improve this question You should be able to render the same brush stroke many times pixels apart to get the effect you want. If you jitter the renders with a Gaussian distribution you will get..

iPhone Core Animation - Drawing a Circle

http://stackoverflow.com/questions/7991086/iphone-core-animation-drawing-a-circle

Many Thanks iphone core animation share improve this question What you really should do is to animate the stroke of a CAShapeLayer where the path is a circle. This will be accelerated using Core Animation and is less messy then to draw.. of a circle in drawRect . The code below will create a circle shape layer in the center of the screen and animate the stroke of it clockwise so that it looks as if it is being drawn. You can of course use any shape you'd like. You can read this.. use any shape you'd like. You can read this article on Ole Begemanns blog to learn more about how to animate the stroke of a shape layer. Note that the stoke properties are not the same as the border properties on the layer. To change the width..

Use a CoreGraphic Stroke as Alpha Mask in iPhone App

http://stackoverflow.com/questions/2208579/use-a-coregraphic-stroke-as-alpha-mask-in-iphone-app

a CoreGraphic Stroke as Alpha Mask in iPhone App I'm basically looking to create something akin to a very simple version of iSteam iFog alebit.. CGContextSetLineCap context kCGLineCapRound CGContextSetLineWidth context 36.0 CGContextSetRGBStrokeColor context 1.0 1.0 1.0 1.0 CGContextBeginPath context CGContextMoveToPoint context lastPoint.x lastPoint.y CGContextAddLineToPoint.. context lastPoint.x lastPoint.y CGContextAddLineToPoint context currentPoint.x currentPoint.y CGContextStrokePath context drawImage.image UIGraphicsGetImageFromCurrentImageContext iphone core graphics mask share improve this question..

Applying a texture to stroke a CGContextStrokePath

http://stackoverflow.com/questions/2366571/applying-a-texture-to-stroke-a-cgcontextstrokepath

a texture to stroke a CGContextStrokePath I am working on making a simple drawing program. So far I am able to stroke the path with a given color and that all.. your help iphone core graphics share improve this question Begin a transparency layer . Get the path's bounds. Stroke the path with any non transparent color. Set the blend mode to source in . Fill the bounding rectangle from step 2 with..

iPhone CGContext: drawing two lines with two different colors

http://stackoverflow.com/questions/3041776/iphone-cgcontext-drawing-two-lines-with-two-different-colors

@ drawrect CGContextRef bluecontext UIGraphicsGetCurrentContext CGContextSetLineWidth bluecontext 2.0 CGContextSetStrokeColorWithColor bluecontext UIColor blueColor .CGColor CGContextMoveToPoint bluecontext 1 1 CGContextAddLineToPoint bluecontext.. blueColor .CGColor CGContextMoveToPoint bluecontext 1 1 CGContextAddLineToPoint bluecontext 100 100 CGContextSetStrokeColorWithColor bluecontext UIColor redColor .CGColor CGContextAddLineToPoint bluecontext 200 100 CGContextStrokePath bluecontext.. bluecontext UIColor redColor .CGColor CGContextAddLineToPoint bluecontext 200 100 CGContextStrokePath bluecontext thanks for your help iphone line draw cgcontext share improve this question Insert this code just before..

UITextView ruled line background but wrong line height

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

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.. CGContextAddLineToPoint context self.bounds.size.width self.font.leading x 0.5f baselineOffset Close our Path and Stroke draw it CGContextClosePath context CGContextStrokePath context @end MyViewController.h #import UIKit UIKit.h #import NoteView.h.. self.font.leading x 0.5f baselineOffset Close our Path and Stroke draw it CGContextClosePath context CGContextStrokePath context @end MyViewController.h #import UIKit UIKit.h #import NoteView.h @interface MyViewController UIViewController..

Why is UIBezierPath faster than Core Graphics path?

http://stackoverflow.com/questions/6327817/why-is-uibezierpath-faster-than-core-graphics-path

controlPoint1 CGPointMake x1 uiBaseline 50 controlPoint2 CGPointMake x2 uiBaseline 50 UIColor blackColor setStroke CGContextAddPath ctx cgpath Stroke each path. self strokeContext ctx self strokeUIBezierPath uipath uipath release CGPathRelease.. x1 uiBaseline 50 controlPoint2 CGPointMake x2 uiBaseline 50 UIColor blackColor setStroke CGContextAddPath ctx cgpath Stroke each path. self strokeContext ctx self strokeUIBezierPath uipath uipath release CGPathRelease cgpath void strokeContext.. self strokeUIBezierPath uipath uipath release CGPathRelease cgpath void strokeContext CGContextRef context CGContextStrokePath context void strokeUIBezierPath UIBezierPath path path stroke Both paths use CGContextStrokePath so I created separate..