Swingbuilder - application location centering
I am creating an application using Griffon->SwingBuilder. I would like to able to center the application on the desktop.
I know we have the 'location: [x,y]' argument we can provide on application creation. Is there anyway to access desktop properties to ca开发者_如何学Golculate the center?
For various reasons you cannot do it inline. Here is one way to center
import java.awt.*
import groovy.swing.*
sb = new SwingBuilder()
sb.build {
f = frame(pack:true) {
label "<html>" + (("This is a very long label."*3) + "<BR>")*5
}
Point cp = GraphicsEnvironment.localGraphicsEnvironment.centerPoint
f.location = new Point((int)(cp.x - f.width), (int) (cp.y - f.height))
f.show()
}
The reason you cannot set it in the attributes is that when the attributes are evaluated a child node has not yet been created or stored anywhere. One alternative is to set it as part of the child content block:
frame(show:true)
{
label "<html>" + (("This is a very long label."*3) + "<BR>")*5
current.pack()
Point cp = GraphicsEnvironment.localGraphicsEnvironment.centerPoint
current.location = new Point((int)(cp.x -current.width/2), (int)(cp.y - current.height/2))
}
(current is a meta-variable for the containing node).
One of Swing features is, that it remembers last position and size (if resizable)
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