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Re: [TCLUG-DEVEL:175] Absolute positioning in Java AWT?
Bob Tanner wrote:
> Quoting Perry Hoekstra (dutchman@uswest.net):
> > > I have a basic graphic and I want to put a TextField in the upper-right
> > > corner of the graphic.
> > >
> >
> > the code would look like this:
> >
> > g.drawImage(t_textField, 0, 600, Color.WHITE, this)
> >
> > where t_textField is an instance of the TextField,
> > 0, 600 is the absolute position,
> > Color.WHITE is the background
> > this refers to the Panel, Applet, whatever that implements ImageObserver
Apologize profusely. Had a bit of a brain fart. One should never code off the
top of their head.
Okay, here we go:
For buttons, widgets, etc., they all extend from Component. Component has a
method called setBounds(int x, int y, int width, int height). The definition
from the source file is:
/**
* Moves and resizes this component. The new location of the top-left
* corner is specified by <code>x</code> and <code>y</code>, and the
* new size is specified by <code>width</code> and <code>height</code>.
* @param <code>x</code> The new <i>x</i>-coordinate of this component.
* @param <code>y</code> The new <i>y</i>-coordinate of this component.
* @param <code>width</code> The new <code>width</code> of this component.
* @param <code>height</code> The new <code>height</code> of this
* component.
* @see java.awt.Component#getBounds
* @see java.awt.Component#setLocation(int, int)
* @see java.awt.Component#setLocation(java.awt.Point)
* @see java.awt.Component#setSize(int, int)
* @see java.awt.Component#setSize(java.awt.Dimension)
* @JDK1.1
*/
It would be used in such a way:
private java.awt.TextArea getEnterTextArea() {
if (enterTextArea == null) {
try {
enterTextArea = new java.awt.TextArea();
enterTextArea.setName("EnterTextArea");
enterTextArea.setBounds(12, 10, 403, 172);
} catch (java.lang.Throwable anException) {
handleException(anException);
}
}
return enterTextArea;
}
I attached a small applet that uses a null layout manager and two widgets that
are using absolute positioning. Give a holler if this is not what you are
looking for.
--
Perry Hoekstra
---
"I don't see much sense in that," said Rabbit.
"No," said Pooh humbly, "there isn't. But there was going to be when I began
it. It's just that something happened to it along the way."
Test.java