| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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 |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.carbon.*; |
| 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 <em>not</em> intended to be subclassed. |
| * </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 { |
| RGB rgb; |
| |
| /** |
| * 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 (); |
| } |
| |
| /** |
| * 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() { |
| 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() { |
| ColorPickerInfo info = new ColorPickerInfo (); |
| if (rgb != null) { |
| info.red = (short)(rgb.red * 257); |
| info.green = (short)(rgb.green * 257); |
| info.blue = (short)(rgb.blue * 257); |
| } else { |
| info.red = (short)(255 * 257); |
| info.green = (short)(255 * 257); |
| info.blue = (short)(255 * 257); |
| } |
| info.flags = OS.kColorPickerDialogIsMoveable | OS.kColorPickerDialogIsModal; |
| // NEEDS WORK - shouldn't be at mouse location |
| info.placeWhere = (short)OS.kAtSpecifiedOrigin; |
| org.eclipse.swt.internal.carbon.Point mp = new org.eclipse.swt.internal.carbon.Point (); |
| OS.GetGlobalMouse (mp); |
| info.v = mp.v; |
| info.h = mp.h; |
| if (title != null) { |
| // NEEDS WORK - no title displayed |
| info.prompt = new byte[256]; |
| int length = title.length(); |
| if (length > 255) length = 255; |
| info.prompt [0] = (byte)length; |
| for (int i=0; i<length; i++) { |
| info.prompt [i+1] = (byte)title.charAt (i); |
| } |
| } |
| Display display = parent != null ? parent.getDisplay() : Display.getCurrent(); |
| display.setModalDialog(this); |
| rgb = null; |
| if (OS.PickColor (info) == OS.noErr && info.newColorChosen) { |
| int red = (info.red >> 8) & 0xFF; |
| int green = (info.green >> 8) & 0xFF; |
| int blue = (info.blue >> 8) & 0xFF; |
| rgb = new RGB(red, green, blue); |
| } |
| display.setModalDialog(null); |
| return rgb; |
| } |
| |
| /** |
| * 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) { |
| this.rgb = rgb; |
| } |
| } |