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/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* Portion Copyright (c) 2009-2010 compeople AG (http://www.compeople.de).
* 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
* Compeople AG - QtJambi/Qt based implementation for Windows/Mac OS X/Linux
*******************************************************************************/
package org.eclipse.swt.widgets;
import com.trolltech.qt.gui.QColor;
import com.trolltech.qt.gui.QColorDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.RGB;
/**
* Instances of this class allow the user to select a color from a predefined
* set of available colors.
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>(none)</dd>
* <dt><b>Events:</b></dt>
* <dd>(none)</dd>
* </dl>
* <p>
* IMPORTANT: This class is intended to be subclassed <em>only</em> within the
* SWT implementation.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example:
* ControlExample, Dialog tab</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further
* information</a>
* @noextend This class is not intended to be subclassed by clients.
*/
public class ColorDialog extends Dialog {
Display display;
int width, height;
RGB initialRGB;
QColorDialog cd;
/**
* Constructs a new instance of this class given only its parent.
*
* @param parent
* a composite control which will be the parent of the new
* instance
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an
* allowed subclass</li>
* </ul>
*
* @see SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(Shell parent) {
this(parent, SWT.APPLICATION_MODAL);
}
/**
* Constructs a new instance of this class given its parent and a style
* value describing its behavior and appearance.
* <p>
* The style value is either one of the style constants defined in class
* <code>SWT</code> which is applicable to instances of this class, or must
* be built by <em>bitwise OR</em>'ing together (that is, using the
* <code>int</code> "|" operator) two or more of those <code>SWT</code>
* style constants. The class description lists the style constants that are
* applicable to the class. Style bits are also inherited from superclasses.
* </p>
*
* @param parent
* a composite control which will be the parent of the new
* instance (cannot be null)
* @param style
* the style of control to construct
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an
* allowed subclass</li>
* </ul>
*
* @see SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(Shell parent, int style) {
super(parent, checkStyle(parent, style));
checkSubclass();
cd = new QColorDialog();
}
/**
* Returns the currently selected color in the receiver.
*
* @return the RGB value for the selected color, may be null
*
* @see PaletteData#getRGBs
*/
public RGB getRGB() {
QColor color = cd.currentColor();
RGB rgb = new RGB(color.red(), color.green(), color.blue());
return rgb;
}
/**
* Makes the receiver visible and brings it to the front of the display.
*
* @return the selected color, or null if the dialog was cancelled, no color
* was selected, or an error occurred
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public RGB open() {
cd.exec();
QColor color = cd.selectedColor();
cd.disposeLater();
return new RGB(color.red(), color.green(), color.blue());
}
/**
* Sets the receiver's selected color to be the argument.
*
* @param rgb
* the new RGB value for the selected color, may be null to let
* the platform select a default when open() is called
* @see PaletteData#getRGBs
*/
public void setRGB(RGB rgb) {
cd.setCurrentColor(new QColor(rgb.red, rgb.green, rgb.blue));
}
}
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