generate high resolution images for printing as well as viewing on iPhone
I have an app in which I impose text on top of a user-supplied image. Normally I display the result on the iPhone screen. This display is low resolution, 480x320.
I also want to send the result (by email) so that it can be printed. The printed format should be much higher resolution than the on-screen format, for example 300 dpi. So the problems I am facing are: make the image higher resolution, and generate the text at higher resolution.
If I use Quartz to draw on top of a PNG is there an easy way to make it generate a high resolution result? Is there another approach to generating low- and high-resolution imagery that doesn't require writing two versions of the code?
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