如何填写ScrolledComposite?

时间:2013-07-24 07:17:44

标签: java swt scrolledcomposite

我有一个从ScrolledComposite扩展的类,在这个类中我创建了一个用于填充父ScrolledComposite的Composite。但每当我向内部复合材料添加标签时,它只会包裹在右上角。我希望我的内部Composite完全填充外部ScrolledComposite。有没有办法做到这一点?

    public class Container extends ScrolledComposite {

    final Composite comp;
    Label nameLabel, sizeLabel, dateLabel;
    ArrayList<Label> entrySize, date;
    ArrayList<SimpleEntry> entry;
    Color white;
    Font font;

    public Container(Composite parent, int style) {
        super(parent, style);
        white = new Color(getDisplay(), 255, 255, 255);
        font = new Font(getDisplay(), "Arial", 16, SWT.BOLD);
        setBackground(white);
        setLayout(new GridLayout(1, false));

        comp = new Composite(this, SWT.BORDER);
        GridData compData = new GridData(SWT.FILL, SWT.FILL, true, true);
        comp.setLayoutData(compData);
        setContent(comp);
        comp.setBackground(white);
        comp.setLayout(new GridLayout(3, false));

        nameLabel = new Label(comp, SWT.BOLD);
        sizeLabel = new Label(comp, SWT.BOLD);
        dateLabel = new Label(comp, SWT.BOLD);

        GridData d1 = new GridData(SWT.CENTER, SWT.CENTER, true, false);
        nameLabel.setLayoutData(d1);

        GridData d2 = new GridData(SWT.CENTER, SWT.CENTER, true, false);
        sizeLabel.setLayoutData(d2);

        GridData d3 = new GridData(SWT.CENTER, SWT.CENTER, true, false);
        dateLabel.setLayoutData(d3);

        nameLabel.setBackground(white);
        sizeLabel.setBackground(white);
        dateLabel.setBackground(white);

        nameLabel.setText("Name");
        sizeLabel.setText("Size");
        dateLabel.setText("Last Modified");

        nameLabel.setFont(font);
        sizeLabel.setFont(font);
        dateLabel.setFont(font);

        comp.setSize(comp.computeSize(SWT.DEFAULT, SWT.DEFAULT));
        comp.layout();

        addDisposeListener(new DisposeListener() {
            @Override
            public void widgetDisposed(DisposeEvent e) {
                Container.this.widgetDisposed(e);
            }
        });
    }
}

1 个答案:

答案 0 :(得分:3)

只需在构造函数的末尾添加这些行:

this.setMinSize(comp.computeSize(SWT.DEFAULT, SWT.DEFAULT));
this.setExpandHorizontal(true);
this.setExpandVertical(true);

注意:

  • 请记住dispose()您自己创建的所有资源(ColorFont,...)
  • 使用display.getSystemColor(SWT.COLOR_WHITE)display.getSystemFont()考虑使用系统资源(无需处置)。