Re: equally sizing text areas inside of a JTabbedPane

On 2008-06-19 20:57 +0100, Albretch Mueller allegedly wrote:
I have a container, a JFrame, with a JTabbedPane inside of it.

The Dimension of the JFrame I set based on the screen size

Inside of the JTabbedPane I create three, two or just one text area.

These JTextAreas are placed inside of a JScrollPane and separated by JSplitPanes, but I would like for all these text areas to occupy
equal spaces

I can not use as reference the JFrame or JTabbedPane Dimensions
(which are the same) because the JTabbedPane already uses space for
the tabs themselves

How can you get the innner Dimension of the actual real estate that
the JTabbedPane lets you use to place in JPanels?

JTabbedPane#getBoundsAt(int) may do the trick.

But I'd rather suggest you tried the following:

Assuming textArea1, textArea2, textArea3 are the components you want to
display.

private static class CustomPanel
extends JPanel
implements Scrollable
{
public boolean getScrollableTracksViewPortWidth(){ return true; }

//implement other Scrollable methods and JPanel c'tors accordingly
}

JPanel p = new CustomPanel();

JSplitPane spp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true,
texArea1, textArea2);
spp.setResizeWeight(.5);

spp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true, spp, textArea3);
spp.setResizeWeight(2d/3);

p.add(spp, BorderLayout.CENTER);

JScrollPane scp = new JScrollPane(p);

... and make scp the tab component.

-.-

I might add that this idea of putting three textAreas in split panes
does NOT seem like a very wise choice, in terms of GUI design, to me.
Consequently, I'd suggest you got rid of them. The code would then look
like this:

JPanel p = new CustomPanel(new GridLayout(1, 3, 5, 5)); //implement
appropriate c'tor in CustomPanel

p.add(textArea1);
p.add(textArea2);
p.add(textArea3);

JScrollPane scp = new JScrollPane(p);

... and make scp the tab component.

-.-

All code from scratch, uncompiled, untested -- no guarantees.

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