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Re: Determine appearance settings

I would find it extremely useful if it were possible to fetch some basic
colors/gradients from UIManager. Anyone writing their own UI delegates
who wants them to be Aqua friendly has to either hard-code colors, or
do the trick of painting a component into an offscreen buffer and diving
for pixels, which is most definitely a hack, and not necessarily a reliable
one (component metrics can change between systems and releases, so
the pixel location you choose now may not have the right color later).

It would make it much easier to create natural looking component UIs
for Aqua if one could do, e.g.

Paint p = (Paint) UIManager.get("ButtonGradient.enabled");

or even simply fetch the colors needed to compose the gradients.

While the Aqua UI's button painting may be native, this can be done with
no measurable startup overhead for the L&F, only initializing the value
if it is ever asked for.

-Tim

On Feb 6, 2004, at 9:26 AM, Manuel Hermann wrote:

You could render a JComponent that has color in an offscreen BufferedImage,
then examine the resulting pixels for hue. You'll want to use something
like the knob of a JSlider that's easy to grab pixels from, and whose color
definitely tracks the system state.

That9s exactly the idea I had already, but of course that's not what I call
"easy". :)

Thanks for your suggestions.

Manuel
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References: 
 >Re: Determine appearance settings (From: Manuel Hermann <email@hidden>)



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