I am creating a vector based drawing app, and being truly vector based I need to have a \"limitless\" canvas. So I have created the following structure:
I\'m trying to use CAGradientLayer to fade foreground controls against the backgro开发者_开发知识库und textured view.
I\'ve started implementing a custom subclass of ABTableViewCell. All the cell rendition and so on is going just fine, but when the user selects a row I want it to change to another background color an
I\'m currently drawing a sinus-curve using the CoreGraphics/Quartz CGContextAddLineToPoint-function on the iPhone:
I have a UIBezierPath inside a view. I want to show an alert when I click on the shape, but what actually happens is that the alert is shown not only when I cl开发者_开发知识库ick within the shape, bu
How would I draw a UIImage in Core Graphics with dimensions 16x16 filled with random pixels at random coordinates and random grayscale color? This seems slightly impossible to do at the moment...
There are a number of resources here and elsewhere on the web regarding how to draw with a gradient - fill or 开发者_开发知识库stroke.
I need to get a trimmed CGImage. I have an image which has empty space 开发者_如何学JAVA(alpha = 0) around some colors and need to trim it to get the size of only the visible colors.
So ... I have this ap开发者_StackOverflow中文版p that draws shapes and then the user can color them. I made a tabbar that has 4 shapes and when one is clicked the respective shape is drawn. I took the
I was wondering if it was possible to draw any core graphics in the content view of a scroll view because at the moment, in the drawRect section of the UIScrollView, it just draws on the static view a
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