Mega Code Archive
Detect a system settings change
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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
* example snippet: detect a system settings change
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.2
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
public class DetectSystemSettingChange {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("The SWT.Settings Event");
shell.setLayout(new GridLayout());
Label label = new Label(shell, SWT.WRAP);
label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
label.setText("Change a system setting and the table below will be updated.");
final Table table = new Table(shell, SWT.BORDER);
table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
TableColumn column = new TableColumn(table, SWT.NONE);
column = new TableColumn(table, SWT.NONE);
column.setWidth(150);
column = new TableColumn(table, SWT.NONE);
for (int i = 0; i < colorIds.length; i++) {
TableItem item = new TableItem(table, SWT.NONE);
Color color = display.getSystemColor(colorIds[i]);
item.setText(0, colorNames[i]);
item.setBackground(1, color);
item.setText(2, color.toString());
}
TableColumn[] columns = table.getColumns();
columns[0].pack();
columns[2].pack();
display.addListener(SWT.Settings, new Listener() {
public void handleEvent(Event event) {
for (int i = 0; i < colorIds.length; i++) {
Color color = display.getSystemColor(colorIds[i]);
TableItem item = table.getItem(i);
item.setBackground(1, color);
}
TableColumn[] columns = table.getColumns();
columns[0].pack();
columns[2].pack();
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
static int[] colorIds = new int[] { SWT.COLOR_INFO_BACKGROUND, SWT.COLOR_INFO_FOREGROUND,
SWT.COLOR_LIST_BACKGROUND, SWT.COLOR_LIST_FOREGROUND, SWT.COLOR_LIST_SELECTION,
SWT.COLOR_LIST_SELECTION_TEXT, SWT.COLOR_TITLE_BACKGROUND,
SWT.COLOR_TITLE_BACKGROUND_GRADIENT, SWT.COLOR_TITLE_FOREGROUND,
SWT.COLOR_TITLE_INACTIVE_BACKGROUND, SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT,
SWT.COLOR_TITLE_INACTIVE_FOREGROUND, SWT.COLOR_WIDGET_BACKGROUND, SWT.COLOR_WIDGET_BORDER,
SWT.COLOR_WIDGET_DARK_SHADOW, SWT.COLOR_WIDGET_FOREGROUND, SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW,
SWT.COLOR_WIDGET_LIGHT_SHADOW, SWT.COLOR_WIDGET_NORMAL_SHADOW, };
static String[] colorNames = new String[] { "SWT.COLOR_INFO_BACKGROUND",
"SWT.COLOR_INFO_FOREGROUND", "SWT.COLOR_LIST_BACKGROUND", "SWT.COLOR_LIST_FOREGROUND",
"SWT.COLOR_LIST_SELECTION", "SWT.COLOR_LIST_SELECTION_TEXT", "SWT.COLOR_TITLE_BACKGROUND",
"SWT.COLOR_TITLE_BACKGROUND_GRADIENT", "SWT.COLOR_TITLE_FOREGROUND",
"SWT.COLOR_TITLE_INACTIVE_BACKGROUND", "SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT",
"SWT.COLOR_TITLE_INACTIVE_FOREGROUND", "SWT.COLOR_WIDGET_BACKGROUND",
"SWT.COLOR_WIDGET_BORDER", "SWT.COLOR_WIDGET_DARK_SHADOW", "SWT.COLOR_WIDGET_FOREGROUND",
"SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW", "SWT.COLOR_WIDGET_LIGHT_SHADOW",
"SWT.COLOR_WIDGET_NORMAL_SHADOW", };
}
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