Hi there,
I have created a load of custom JComponents, many of which are not
rectangular.
I do my painting using Java2D.
The components can be dragged around the screen (the components are part of
a RAD kit)
I'd like to add a "eye-candy" shadow effect to the components while they are
being dragged, so that it adds a feel of depth to the application. When the
component is released the shadow is supposed to disappear.
So far I've created my shadows by displacing the component by (10, 10) and
painted it using a light grey, and then painting the component on top.
There is no alpha blending.
One problem is that it only really works for rectangular components, because
they fill their entire "canvas". Non-rectangular components don't so, I fill
the canvas with a subimage of the background image before painting the
button.
I'm wondering if there is a more efficient way of doing this? (and I don't
really know where to start).
For instance, if I use alpha blending for the shadow, do I need to fill the
canvas with a subimage of the background image before painting the button,
or can I simply adjust the alpha of the shadow?
Any ideas? Do you have any references I could look up?
Thanks
Jon
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