2014/10/15 下午 10:05:07

iphone Programming Glossary: clipping

UIScrollView horizontal paging like Mobile Safari tabs

http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs

BOOL pointInside CGPoint point withEvent UIEvent event method however you will still need a container view to do the clipping and it may be difficult to determine when to return YES based only on the UIScrollView 's frame. NOTE You should also take..

How do I add a gradient to the text of a UILabel, but not the background?

http://stackoverflow.com/questions/1266179/how-do-i-add-a-gradient-to-the-text-of-a-uilabel-but-not-the-background

the normal Quartz coordinate system on for the Y axis sets the text drawing mode to intersect the drawn text with the clipping path clips the area to draw to the text and then draws a gradient. The gradient will only fill the text not the background...

Rounded Corners on UIImage

http://stackoverflow.com/questions/205431/rounded-corners-on-uiimage

. I thought this might be related to the cropping question I asked a few weeks back but I believe I'm setting up the clipping path correctly. Here's the code I'm using when it doesn't crash the result looks fine and anybody looking to get a similar..

How do I use the NSString draw functionality to create a UIImage from text

http://stackoverflow.com/questions/2765537/how-do-i-use-the-nsstring-draw-functionality-to-create-a-uiimage-from-text

size NO 0.0 else iOS is 4.0 UIGraphicsBeginImageContext size optional add a shadow to avoid clipping the shadow you should make the context size bigger CGContextRef ctx UIGraphicsGetCurrentContext CGContextSetShadowWithColor..

Inner shadow effect on UIView layer?

http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer

subtracted for the shadow CGPathAddPath path NULL visiblePath CGPathCloseSubpath path Add the visible paths as the clipping path to the context CGContextAddPath context visiblePath CGContextClip context Now setup the shadow properties on the context.. them in opposite directions one clockwise and the other anti clockwise. Then you need to set your visible path as the clipping path on the context so that you don't draw anything outside it to the screen. Then setup up the shadow on the context which..

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

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

0.5f borderRadius strokeWidth CGContextClosePath context CGContextDrawPath context kCGPathFillStroke Draw a clipping path for the fill CGContextBeginPath context CGContextMoveToPoint context borderRadius strokeWidth 0.5f round currentFrame.size.height.. HEIGHTOFPOPUPTRIANGLE 0.50f 0.5f borderRadius strokeWidth CGContextClosePath context CGContextClip context The clipping path at the end can be left out if you're not going to use a gradient or some other more fill that's more complex than a..

Slight zoom on MKCoordinateRegion?

http://stackoverflow.com/questions/4724176/slight-zoom-on-mkcoordinateregion

the region size by a few percent does not seem to work with the view nearly always jumping zooming in to far and clipping my pins. EDIT Quick tests showing the results of different scaling factors on the region SCALE FACTOR V region.span.latitudeDelta..

Just two rounded corners? [duplicate]

http://stackoverflow.com/questions/4845211/just-two-rounded-corners

set up for use in drawRect but it should be pretty easy to adapt it. You're basically just building up a path and then clipping the context to it. Edit To explain the bitmask part it's just an enum typedef enum UIImageRoundedCornerTopLeft 1 UIImageRoundedCornerTopRight..

Round two corners in UIView

http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview

color just to check if it works self.view.backgroundColor UIColor redColor Add a test view to verify the correct mask clipping UIView testView UIView alloc initWithFrame CGRectMake 0.0 0.0 50.0 50.0 testView.backgroundColor UIColor blueColor self.view.. color just to check if it works self.view.backgroundColor UIColor redColor Add a test view to verify the correct mask clipping UIView testView UIView alloc initWithFrame CGRectMake 0.0 0.0 50.0 50.0 testView.backgroundColor UIColor blueColor self.view..

app rejected from apple app store because UIWebview, need some advice

http://stackoverflow.com/questions/7421002/app-rejected-from-apple-app-store-because-uiwebview-need-some-advice

store so I don't know if just by adding what they say about providing instructions on how users can create safari web clipping will get my app approve and if this instructions can just be written in a pop up message any advice will be greatly appreciated..

Why is there an frame rectangle and an bounds rectangle in an UIView?

http://stackoverflow.com/questions/749558/why-is-there-an-frame-rectangle-and-an-bounds-rectangle-in-an-uiview

have been just enoug to do everything. Positioning the View itself relative to another coordinate system and then clipping it's content to a specified size. What else would you do with two rectangles And how do they interact with eachother Does.. clarification If you are positioning the view in its superview you almost always change the frame origin. If you are clipping where the UIView is drawing you almost always modify its bounds. Note that you are allowed to have bounds that is bigger..

Most efficient way to draw part of an image in iOS

http://stackoverflow.com/questions/8035673/most-efficient-way-to-draw-part-of-an-image-in-ios

Actually UIImageView with clipsToBounds is one of the fastest simplest ways to archive your goal if your goal is just clipping a rectangular region of an image not too big . Also you don't need to send setNeedsDisplay message. Or you can try putting.. don't need to send setNeedsDisplay message. Or you can try putting the UIImageView inside of an empty UIView and set clipping at the container view. With this technique you can transform your image freely by setting transform property in 2D scaling.. to be for CPU. So it seems to be done in CPU. Graphics operations done in CPU are a lot slower than in GPU. Simply clipping an image and compositing the image layers are very simple and cheap operations for GPU compared to CPU soo you can expect..

Photos app-like gap between pages in UIScrollView with pagingEnabled

http://stackoverflow.com/questions/849383/photos-app-like-gap-between-pages-in-uiscrollview-with-pagingenabled