calayer

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iphone - How to control CALayer's shadow, exactly?

I am very new to CALayer thing. I had a look at the documentation, but quite don\'t understand the meaning of those properties which can be used to control the shadow[详细]

2023-03-15 18:41 分类：问答
how to show words in the layer

I want to write some words to one layer. but when I create the layer,I can\'t find the corresponding API to attach the words to the layer.[详细]

2023-03-15 17:18 分类：问答
setShadowOffset crash on iOS 3.x

Terminating app due to uncaught exception \'NS开发者_运维知识库InvalidArgumentException\', reason: \'* -[CALayer setShadowOffset:]: unrecognized selector sent to instance 0x2f86d0\'[详细]

2023-03-15 05:52 分类：问答
Problem creating shadow behind rounded UIImageView

I have a rounded UIImageView. When I add a shadow to it, I lose the rounded corner. How can I have a shadow with a rounded corner?[详细]

2023-03-15 03:30 分类：问答
CATiledLayer is being rendered underneath a UIView

I\'m making a PDF reader that looks like a real book. I have a UIImageView inside a scrollview as the book\'s background (imagine an open book with empty pages).The UIImageView\'s layer has 2 sublaye[详细]

2023-03-14 10:27 分类：问答
Multiple Core Animation Viewports

I have a complex structure of CALayers forming a motion graphics s开发者_StackOverflowystem that can be manipulated by the user. This is being displayed in the main window as a part of the UI. I am lo[详细]

2023-03-14 08:52 分类：问答
CALayer invalid geometry , Mfmailcomposer

Am trying to open MFMailComposer class, but it crashes on init method giving CALayer position contains NaN: [nan 24.5][详细]

2023-03-13 14:04 分类：问答
Drawing with Core Graphics in a CALayer

I\'m trying to get my开发者_如何学C head around Core Graphics and Core Animation.I understand the following:[详细]

2023-03-12 23:12 分类：问答
how do i turn a cgpoint into a cgrect or how can i set a calayer's center?

i want to align my CALayer to be centered around a point that i get, but im not really that familiar with calayers, dont think they have a center property, ive had some luck with setting the whole fra[详细]

2023-03-12 08:47 分类：问答
CGImage gets stretched in CALayer

I have an NSMutableArray of CGImage objects. All the images have different dimensions ( 80x20 px, 200x200 px, 10x10 px, etc...)[详细]

2023-03-12 04:31 分类：问答