¡@
2014/10/15 ¤U¤È 10:04:54
iphone Programming Glossary: canvasDeactivate UIScrollView decelerating http://stackoverflow.com/questions/1105647/deactivate-uiscrollview-decelerating decelerating Is there a way to deactivate the decelerating of a UIScrollView I want to allow the user to scroll the canvas but I don't want that the canvas continues scrolling after the user lifted the finger. iphone cocoa touch iphone sdk 3.0.. deactivate the decelerating of a UIScrollView I want to allow the user to scroll the canvas but I don't want that the canvas continues scrolling after the user lifted the finger. iphone cocoa touch iphone sdk 3.0 uiscrollview share improve this..
How to send add friend request (to facebook user) from iOS application? http://stackoverflow.com/questions/11521580/how-to-send-add-friend-request-to-facebook-user-from-ios-application
Alpha transparent PNGs not displaying correctly in Mobile Safari http://stackoverflow.com/questions/1374618/alpha-transparent-pngs-not-displaying-correctly-in-mobile-safari do something different either to my pages or PNGs Here's how I create the PNGs In Photoshop create a 1x1 transparent canvas. Draw a white rectangle in Layer 1. Set opacity to say 30 percent Save for Web as 24 bit PNG with transparency. iphone..
Changing Views from UISegmentedControl http://stackoverflow.com/questions/1559794/changing-views-from-uisegmentedcontrol file is a pain to edit as you can't easily turn off the other UIViews so I invariably select the wrong element on the canvas. Also IB complains that This view overlaps one of its siblings in the info dialog. What is the approach I should be taking..
Draw to offscreen renderbuffer in OpenGL ES (iPhone) http://stackoverflow.com/questions/1853551/draw-to-offscreen-renderbuffer-in-opengl-es-iphone 1 texturebuffer glBindFramebufferOES GL_FRAMEBUFFER_OES texturebuffer create the texture glGenTextures 1 canvastexture glBindTexture GL_TEXTURE_2D canvastexture glTexImage2D GL_TEXTURE_2D 0 GL_RGBA 512 512 0 GL_RGBA GL_UNSIGNED_BYTE.. GL_FRAMEBUFFER_OES texturebuffer create the texture glGenTextures 1 canvastexture glBindTexture GL_TEXTURE_2D canvastexture glTexImage2D GL_TEXTURE_2D 0 GL_RGBA 512 512 0 GL_RGBA GL_UNSIGNED_BYTE NULL glFramebufferTexture2DOES GL_FRAMEBUFFER_OES.. 0 GL_RGBA GL_UNSIGNED_BYTE NULL glFramebufferTexture2DOES GL_FRAMEBUFFER_OES GL_COLOR_ATTACHMENT0_OES GL_TEXTURE_2D canvastexture 0 GLenum status glCheckFramebufferStatusOES GL_FRAMEBUFFER_OES if status GL_FRAMEBUFFER_COMPLETE_OES NSLog @ failed..
Bug in iPad's html5 canvas drawimage() implementation? http://stackoverflow.com/questions/2878580/bug-in-ipads-html5-canvas-drawimage-implementation in iPad's html5 canvas drawimage implementation After some grueling debugging I think I have found a bug in the iPad Safari's implementation of.. 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.. ctx.drawImage timg 0 0 128 128 128 0 65 65 timg.src http amirshimoni.com ipadbug1 1234.jpg script body onload draw canvas id cc width 256 height 128 canvas body You can run it here or see the output from the iPad here . This bug doesn't seem..
http://stackoverflow.com/questions/3841642/curve-text-on-existing-circle perimeter. And divide the remaining space equally between the string. Update I made a proof of concept using html5 canvas so view it with a decent browser You should be able to port it. mind you the code isn't commented wtf the code runs fine..
http://stackoverflow.com/questions/3956202/ipad-very-simple-drawing some simple drawing. Here is a slightly modified version of it. It works basically like hotpaw2 describes. I created a canvas view that handles all the drawing and I just add it wherever it's needed. The speed is fine for my purposes. CanvasView.h.. 99 end of path indicator self.points addObject NSValue valueWithCGPoint endPoint self setNeedsDisplay @end Adding the canvasView where it's needed CanvasView cv CanvasView alloc initWithFrame CGRectMake 0 0 320 640 self.view addSubview cv cv release..
http://stackoverflow.com/questions/4504942/mobile-safari-svg-problem the document with xml instead of html as they have done here https developer.mozilla.org presentations xtech2005 svg canvas SVGDemo.xml Not sure if Ipad cares about the Content Type but other browsers do. Updated DOCTYPE svg PUBLIC W3C DTD SVG..
Drawing app on iPad using OpenGL http://stackoverflow.com/questions/4606680/drawing-app-on-ipad-using-opengl 1 t t control.y t t destination.y vertices i CGPointMake x y t 1.0 segments windowHeight is the height of you drawing canvas. midPoint CGPointMake x windowHeight y glVertexPointer 2 GL_FLOAT 0 vertices glDrawArrays GL_POINTS 0 segments 2 return..
How can I erase UIBezierPath lines drawn on a transparent view above an image? http://stackoverflow.com/questions/7979937/how-can-i-erase-uibezierpath-lines-drawn-on-a-transparent-view-above-an-image question If you have an image in the background and the image is the same size and origin as your whiteboard drawing canvas you could try drawing your erase lines using the background image as a colour pattern UIColor colorWithPatternImage backgroundImage..
iOS Pinch Scale and Two Finger Rotate at same time http://stackoverflow.com/questions/8108768/ios-pinch-scale-and-two-finger-rotate-at-same-time UIPinchGestureRecognizer pinch UIPinchGestureRecognizer alloc initWithTarget self action @selector pinch self.canvas addGestureRecognizer pinch pinch.delegate self UIRotationGestureRecognizer twoFingersRotate UIRotationGestureRecognizer.. twoFingersRotate UIRotationGestureRecognizer alloc initWithTarget self action @selector pinchRotate self canvas addGestureRecognizer twoFingersRotate twoFingersRotate.delegate self Code For Pinches and Rotates BOOL gestureRecognizer..
How Can I Save An Image To An iPhone Photo Gallery Using PhoneGap? http://stackoverflow.com/questions/8663890/how-can-i-save-an-image-to-an-iphone-photo-gallery-using-phonegap saveImageToAlbum args Make a reference to the JavaScript created in no.4 in your index.html. Suppose you have a canvas and you want to save it as an image to the camera roll you can use its toDataURL function to return a base64 PNG data. You..
iPhone take augmented reality screenshot with AVCaptureVideoPreviewLayer http://stackoverflow.com/questions/8980847/iphone-take-augmented-reality-screenshot-with-avcapturevideopreviewlayer render the AVCaptureVideoPreviewLayer even if I ask the window to save itself. It will create a transparent piece of canvas where the preview layer is. What's the proper way for an augmented reality app to save screenshots including transparency..
steps for creating UIScrollView with Interface Builder http://stackoverflow.com/questions/9118796/steps-for-creating-uiscrollview-with-interface-builder back to 320x480. Is this right This works but it doesn't make sense to me. I get that the View is supposed to be the canvas where I add all the UI elements. I want the canvas of the iPhone app to be 320x700 and I want to be able to put my buttons.. doesn't make sense to me. I get that the View is supposed to be the canvas where I add all the UI elements. I want the canvas of the iPhone app to be 320x700 and I want to be able to put my buttons etc on this 320x700 canvas. But if I don't change.. I want the canvas of the iPhone app to be 320x700 and I want to be able to put my buttons etc on this 320x700 canvas. But if I don't change the size of the UIScrollView back to 320x480 it won't scroll because I need to set the content size..
http://stackoverflow.com/questions/3841231/custom-progressbar-widget mSlider.setOnSeekBarChangeListener this addView mSlider fl.addView mSlider addView fl @Override protected void onDraw Canvas canvas super.onDraw canvas Rect rectf new Rect mSlider.getLocalVisibleRect rectf Log.d WIDTH String.valueOf rectf.width.. can iterate over your array of text strings and draw each string in the right place. @Override protected void onDraw Canvas canvas int myWidth getMeasuredWidth LEFT_PADDING RIGHT_PADDING int separation myWidth mSize 1 for int i 0 i i mSize int..
Save OpenGL Drawn item as a Image http://stackoverflow.com/questions/9660723/save-opengl-drawn-item-as-a-image Drawn item as a Image I have downloaded the sample code GLPaint from developer.Apple website to draw pictures on a Canvas using OpenGL.. I have done the changes in GLPaint application to meet my requirements. Now i need to save the Drawn item..
Record the drawing as a m4v video file - OpenGL http://stackoverflow.com/questions/9661259/record-the-drawing-as-a-m4v-video-file-opengl a m4v video file OpenGL I have downloaded the sample code GLPaint from developer.Apple website to draw pictures on a Canvas using OpenGL. I have done the changes in GLPaint application to meet my requirements. Now I need to record the drawing as..
|