考虑到可显示的各种分辨率，如何为Cocoa mac应用设置UI组件的大小？

Question

1. Cocoa uses a drawing system (user coordinate space) measured in "points" which are resolution independent...sounds great

2. While we need to be concerned with our app running in many resolutions, Cocoa is going to take care of that for us in (1) above...sounds too good to be true!

3. It does scale our controls as resolution changes...this is good.

4. BUT the screen size increases as my resolution increases...this is not good, I though we had a drawing canvas that was independent of the resolution!

5. What if the controls shrink to silly small levels as the resolution increases - should I be concerned about this?

To summarize: is their a "standard" resolution I should design for and then all automatic scaling by Apple will automatically look fine?

[Confused while reading the Apple Progammer Guide on the topic of Drawing]

Answer 1

You do not need to be concerned about this. The user is only allowed to select resolutions which make sense given the physical size of the display, so the standard controls will always be "large enough". You just need to test your app on Retina and non-Retina displays (and ideally both at the same time, with an external 1x monitor plugged on a 2x machine ; move your windows between the two screens and check that your images update accordingly).