Using Pixelmator, quite often I need to draw a shape and then select everything around that shape to apply a filter or change hue/contrast. Is there an easy way to select everything around a shape, specially when the shape is not a rectangle.
For example, in this blog post, I created a red rectangle with round edges:
and you can see everything around it is grayish. I got away with it because the rectangle is on top of white, so you can't see the edge, but when the rectangle is on top of something with a color, I need to have the selection perfectly around the rectangle, otherwise it looks broken.