Summary of the problem is that I have a custom NSButton subclass which
accomplishes a roll-over effect (title and background take on a
special appearance when the mouse is over the cell). On Leopard,
these same cells appear to perform a state change on mouse-over (the
title and the image switch to their alternate state), but the state
has not actually changed (according to gdb interrogation) and the
title and image return to the normal state when the mouse leaves the
cell/button.
Anyone seen this problem? Anyone know what is/could-be going wrong?
The details:
My custom NSButtonCell subclass defines some new, custom methods, and
it completely overrides drawBezelWithFrame, while it augments (i.e.
still call through to super) the methods drawInteriorWithFrame,
drawTitle, and drawImage. These cells appear in the window inside of
a custom NSMatrix subclass which does the necessary mouse event
handling to accomplish roll-over.
This all works fine and good on Tiger. On Leopard (with no code
changes and the binary compiled on either Tiger or compiled against
the 10.4 sdk on Leopard), the same button behaves wrong. The title
and image being passed into the drawTitle and drawImage state are the
alternates when the mouse is over the button, even though when I
interrogate the cell in the debugger the state has not changed (still
NSOffState, i.e. the normal, not alternate state). I can counteract
the problem by ignoring the passed in title/image and determining it
myself according to the current cell state, i.e.
image = ([self state] == NSOffState) ? [self image] : [self
alternateImage];
title = ([self state] == NSOffState) ? [self attributedTitle] : [self
attributedAlternateTitle];
however, one problem still persists (beyond the obvious confusion as
to why such a tactic is even necessary) whereby the dimming of the
image does not happen on mouse-down but, rather, happens on roll-over
when the button is in the alternate state.
I'm at a loss. Please help me.
Mark Sanvitale
Exbiblio
[EMAIL PROTECTED]
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