试图将很多标签添加到一个复合材料中,该复合材料包含在卷轴上,在某个数字之后(1638)对我来说,它似乎只是放弃并停止绘制组件之后。这是对可以显示的许多事情的困难限制还是我做错了的事情。
如果我只添加一个带有2000行文本的标签,也会发生这种情况。
public class LoadsOfLabelsTestDialog extends Dialog
{
List<Label> displaylabels = new ArrayList<>();
Composite content, list;
ScrolledComposite scroll;
public LoadsOfLabelsTestDialog(Shell parentShell)
{
super(parentShell);
}
@Override
protected void configureShell(Shell shell)
{
super.configureShell(shell);
shell.setSize(new Point(700, 500));
shell.setText("FML"); //$NON-NLS-1$
}
@Override
public Control createDialogArea(final Composite comp)
{
content = (Composite) super.createDialogArea(comp);
content.setLayout(new GridLayout(1, false));
content.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
Button set1 = new Button(content, SWT.PUSH);
set1.setText("Display List 1");
set1.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
List<String> rows = new ArrayList<>();
for (int i = 0; i < 2000; i++) {
rows.add(i +" row");
}
updateList(rows);
}
});
scroll = new ScrolledComposite(content, SWT.V_SCROLL);
list = new Composite(scroll, SWT.NONE);
list.setLayout(new GridLayout(1, true));
scroll.setContent(list);
scroll.setExpandHorizontal(true);
scroll.setExpandVertical(true);
scroll.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, true));
new Label(content, SWT.HORIZONTAL | SWT.SEPARATOR);
setScrollSize();
return content;
}
private void setScrollSize() {
scroll.setMinSize(list.computeSize(SWT.DEFAULT, SWT.DEFAULT));
}
private void updateList(List<String> rows) {
if (this.displaylabels == null) {
this.displaylabels = new ArrayList<>();
}
for (Label l : displaylabels) {
l.dispose();
}
this.displaylabels.clear();
for (String item : rows) {
addListLabel(item);
}
content.layout(true, true);
setScrollSize();
}
private void addListLabel(String whoText) {
Label a = new Label(list, SWT.NONE);
a.setText(whoText);
this.displaylabels.add(a);
}
public static void main(String[] args)
{
Display d = new Display();
Shell s = new Shell();
LoadsOfLabelsTestDialog fml = new LoadsOfLabelsTestDialog(s);
fml.open();
}
}
您达到了硬限制,可能是控件的最大尺寸。虽然此限制在其他平台上可能略有不同,但您不能任意大小控制。
@ @greg-449建议使用Table
。如果每个表行的内容不仅仅是图像和文本,您可以添加油漆侦听器自己绘制行内容。