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Matt Drance
DTS Engineer
Java - Dashboard - Address Book
email@hidden
On Jul 10, 2005, at 11:06 PM, Tim Boudreau wrote:
On Jul 10, 2005, at 6:14 PM, Scott Palmer wrote:
On 10-Jul-0 , at 3:13 AM, Tim Boudreau wrote:
It's compounded a bit by the fact that Apple's implementation of
PopupFactory doesn't seem to get the algorithm for deciding when to
use a heavyweight window quite right - sometimes, apparently
randomly, it will use a heavyweight window even though a
lightweight popup would work just fine.
I think heavyweights are used for two reasons. One to get the
shadow, two to get the translucent effect that pop-ups/menus have on
OS X. I wasn' sure if lightweight pop-ups were ever used.
In an earlier 1.4.2 release on Mac OS, heavyweight popups were always
on - the ivar in PopupFactory was hardcoded to the heavyweight
constant, with a note in the sources about "Steve will fix this...";
in a later release this was fixed, but lightweight popups were broken
(I had to put a mac-os version-specific hack into some code in
NetBeans that uses PopupFactory to *force* the popups to be
heavyweight). In the latest version, you sometimes get heavyweight
popups, sometimes lightweight popups; it doesn't seem to be solely
determined by whether a lightweight popup could be used - sometimes
you get one, sometimes you don't. I haven't read the sources for the
latest version of PopupFactory, but I'm guessing it's just reusing a
heavyweight popup if it has a recently used one that hasn't been GC'd
or something such.
Anyway, since the drop shadow is provided by the OS for the native
window, my best bet is to implement my own PopupFactory which will do
lightweight popups where possible - that's not hard. But heavyweight
popups will still sometimes be needed - I just need them without the
drop shadow border. I'm not above reflection-based hacks on the
window peer if that's what it takes - it's easy enough to make them
fail gracefully.
Does anyone know a way to turn off the drop shadow for a native
window via Cocoa Java (yes, I know, bad bad bad, don't do that) or a
less egregious client property or something that will do the trick?
-Tim
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