NSView unit scale question ?
NSView unit scale question ?
- Subject: NSView unit scale question ?
- From: Robert Miller <email@hidden>
- Date: Fri, 18 Feb 2005 10:03:39 -0500
Hello,
Has anyone had in depth experience with the
'scaleUnitSquareToSize' call vs. the resulting frame size of the
receiver ? I'm working on an application that has movable / resizable
custom subviews that are also scalable. I've done some research and
have discovered some very useful examples on scaling using the
scaleUnitSquareToSize' call and understand it's use and how the bounds
rectangle of a view is affected by this call. The call does not affect
the frame rectangle as would be expected however, I want to be able to
display the entire scaled bounds in the NSView after scaling. I've
added some code which effectively readjusts the frame rectangle to do
this. The real issue is that once a view is scaled it seems that any
subviews within that view seem to have lost their auto resize mask.
(even though diagnosis has shown that they haven't) The behavior of
subviews when a previously scaled view is subsequently resized appears
as if they have. Example. A custom view is created and displayed, the
custom view contains sub views whose 'spring' settings include
NSViewMinYMargin and NSViewMaxXMargin which cause the subviews to
'stick' to the top left corner of the view when the view is resized
such that its width and height are increased. After the view is scaled
the subviews no longer behave as if the previously mentioned resize
settings are in effect. (even though as previously stated the values
for resizing have not changed). In other words when the view is resized
after a scale is applied the subviews now move and no longer stick to
the top left corner. Is this some strange anomaly with scaling and
resizing mask behaviors internal to NSView. Does my example make sense ?
Thanks in advance for any help,
Regards,
Bob M.
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