Under the Bridge

From the prolifically open sourcing Matt Legend Gemmell, here’s MGImageUtilities, some useful UIImage categories for your iPhone development:

UIImage+ProportionalFill

This category lets you resize an arbitrary image to fit into a specified physical size, using one of four resizing methods:

• Scale: scales the image proportionally to fit entirely into the required size, like UIViewContentModeScaleAspectFit.
• Crop: scales the image proportionally to completely fill the required size, cropping towards its center. This is the most useful method, and works like UIViewContentModeScaleAspectFill.
• Start: as for Crop, but crops towards the “start” of the image (the top or left, depending on relative aspect ratios).
• End: as for Crop, but crops towards the “end” of the image (the bottom or right, depending on relative aspect ratios).

UIImage+Tint

This category takes an image (presumably flat and solid-coloured, like a toolbar icon), and fills its non-transparent pixels with a given colour. You can optionally also specify a fractional opacity at which to composite the original image over the colour-filled region, to give a tinting effect.

Source is on github, enjoy!