8

I'm trying to build a GUI window in my application. What I'm trying to do is have a window, with a few buttons at the top, and a large text area. Something like this:

+--------------------------------------------------+
| [button1] [button2]                    [button3] |
| +----------------------------------------------+ |
| | text area                                    | |
| |                                              | |
| |                                              | |
| |                                              | |
| +----------------------------------------------+ |
+--------------------------------------------------+

I'm almost there, using GroupLayout:

  layout.setHorizontalGroup(
    layout.createParallelGroup()
      .addGroup(layout.createSequentialGroup()
        .addComponent(button1)
        .addComponent(button2))
        .addComponent(closeWindow))
      .addComponent(textarea1)
  );

  layout.setVerticalGroup(
    layout.createSequentialGroup()
      .addGroup(layout.createParallelGroup()
        .addComponent(button1)
        .addComponent(button2)
        .addComponent(button3))
      .addComponent(textarea)
  );

The problem is that this ends up with button3 aligned to the left, with the other two. I can't seem to figure out how I can specify the alignment on just that one button. I can do GroupLayout.Alignment.TRAILING on the entire button bar, but that hits all 3 buttons, which is also not quite right.

So what's the correct approach? Since the alignment only applies for Parallel Groups, I don't think having a HorizontalGroup with two Sequential Groups in it will help?

What am I missing?

4

3 に答える 3

11

シーケンシャルグループにギャップを追加します。水平グループをそのままにします。

layout.setVerticalGroup(
    layout.createSequentialGroup()
      .addGroup(layout.createParallelGroup()
        .addComponent(button1)
        .addComponent(button2)
        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        .addComponent(button3))
      .addComponent(textarea)
  );

これらのパラメータとのギャップは「スプリング」として機能し、使用可能なすべてのスペースを占有します。

于 2010-04-19T20:22:15.023 に答える
3

追加してみてください：

.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 1, Short.MAX_VALUE)

2番目のボタンの後。MAX_VALUEにより、ギャップは必要なだけ拡大します。

于 2010-04-19T20:20:50.410 に答える
1

シーケンシャル グループでのみ使用できる addPreferredGap() を使用します。以下のコードは、目的のレイアウトを提供します。

    layout.setHorizontalGroup(
            layout.createParallelGroup()
                    .addGroup( layout.createSequentialGroup()
                            .addComponent( button1 )
                            .addComponent( button2 )
                            .addPreferredGap( LayoutStyle.ComponentPlacement.RELATED, GroupLayout.PREFERRED_SIZE, Short.MAX_VALUE )
                            .addComponent( button3 ) )
                    .addComponent( textArea )
    );
    layout.setVerticalGroup(
            layout.createSequentialGroup()
                    .addGroup( layout.createParallelGroup()
                            .addComponent( button1 )
                            .addComponent( button2 )
                            .addComponent( button3 ) )
                    .addComponent( textArea )
    );
于 2014-08-27T17:25:29.850 に答える