Bug 256950

Description Judy van Aswegen 2008-11-28 17:52:19 EST

Builds: Eclipse SDK Mac OSX Cocoa N20081126-2000 (compared to Carbon N20081126-2000)

In the context of the SWT Controls Example, re the Button, Combo, Scale, and Labels (image) controls:
 
I'm seeing a difference in the way Size impacts the size and position of these controls.
 
For Carbon: 
1) In general, increasing the size of the control (10 x 10  to  50 x 50  to  100 x 100) results in the control growing in both dimensions. A 50 x 50 push button is square in shape. 
2) The control is top-left aligned in the specified area.

This means:
1) The control fills the area specified by the size.
2) An increase in size does not change the x y position of the control – the control simply grows downwards and towards the right.
 

For Cocoa: 
1) In general, increasing the size of a control (10 x 10  to  50 x 50  to  100 x 100) results in the control growing in the horizontal dimension only. A 50 x 50 push button is rectangular with a width of 50 and a "preferred" height.
2) The control appears center-left aligned in the specified area.

This means:
1) The control does not fill the area specified by the size.
2) An increase in size changes the vertical position of the control – it grows towards the right, but migrates downwards.


Note:
1) I say in general because, for some controls, it does not make sense to do anything other than add white space in some dimensions, which one can see if Border or Background Image are on (and working, which is often not the case). E.g. the combo control: one expects it to grow horizontally, but not vertically. 
2) The problem may be related to the use of skins. I notice that a 50 x 50 push button is 50 x "preferred" when not "Flat", but becomes the expected 50 x 50 if one sets Flat on (and the skin falls away).