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Change TreeViewer column header height [message #663765]

Wed, 06 April 2011 12:48

Oliver Pfau

Messages: 28
Registered: July 2009

Junior Member

Hi,

I have a command which opens a FontDialog to choose the font of my TreeViewer. The TreeViewer cells expanding when a bigger font size is chosen. Unfortunately not the column headers. The size remains and the text is cut. There is a method Tree.getHeaderHeight() : int but no setter for this. Can I set the header column height?

Regards,
Oliver

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Re: Change TreeViewer column header height [message #664110 is a reply to message #663765]

Thu, 07 April 2011 13:56

Lakshmi P Shanmugam

Messages: 279
Registered: July 2009
Location: India

Senior Member

Hi,

There is no setter method to set the height of the header. But, the header's height is computed based on the text/image set to it. So, when you change the font size of the table, the header's height also changes. It works on my Windows machine. On which platform are you seeing this?

I modified Snippet38 to try this out. Does it work for you?

public class Snippet38 {

public static void main (String [] args) {
final Display display = new Display ();
final Shell shell = new Shell (display);
shell.setLayout(new FillLayout());
final Table table = new Table (shell, SWT.H_SCROLL|SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION|SWT.CHECK);
table.setLinesVisible (true);
table.setHeaderVisible (true);
final String[] titles = {"titleioioio", "C", "!", "Description", "Resource", "In Folder", "Location"};
for (int i=0; i<titles.length; i++) {
TableColumn column = new TableColumn (table, SWT.NONE);
column.setText (titles [i]);
}
int count = 10;
for (int i=0; i<count; i++) {
TableItem item = new TableItem (table, SWT.NONE);
item.setText (0, "x");
item.setText (1, "y");
item.setText (2, "!");
item.setText (3, "this stuff behaves the way I expect");
item.setText (4, "almost everywhere");
item.setText (5, "some.folder");
item.setText (6, "line " + i + " in nowhere");
}
table.pack();
for (int i=0; i<titles.length; i++) {
table.getColumn (i).pack ();
}
Button button = new Button(shell, SWT.PUSH);
button.setText("change font");
button.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
FontDialog d = new FontDialog(shell);
FontData data = d.open();
table.setFont(new Font(display, data));
for (int i = 0; i < titles.length; i++) {
table.getColumn(i).pack();
}

}

public void widgetDefaultSelected(SelectionEvent e) {

}
});

shell.pack ();
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}

Lakshmi P Shanmugam

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