| /******************************************************************************* |
| * Copyright (c) 2004, 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 |
| *******************************************************************************/ |
| package org.eclipse.jface.resource; |
| |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Device; |
| import org.eclipse.swt.graphics.RGB; |
| |
| /** |
| * Describes a color by its RGB values. |
| * |
| * @since 3.1 |
| */ |
| class RGBColorDescriptor extends ColorDescriptor { |
| |
| private RGB color; |
| |
| /** |
| * Color being copied, or null if none |
| */ |
| private Color originalColor = null; |
| |
| /** |
| * Creates a new RGBColorDescriptor given some RGB values |
| * |
| * @param color RGB values (not null) |
| */ |
| public RGBColorDescriptor(RGB color) { |
| this.color = color; |
| } |
| |
| /** |
| * Creates a new RGBColorDescriptor that describes an existing color. |
| * |
| * @since 3.1 |
| * |
| * @param originalColor a color to describe |
| */ |
| public RGBColorDescriptor(Color originalColor) { |
| this(originalColor.getRGB()); |
| this.originalColor = originalColor; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object obj) { |
| if (obj instanceof RGBColorDescriptor) { |
| RGBColorDescriptor other = (RGBColorDescriptor) obj; |
| |
| return other.color.equals(color) && other.originalColor == originalColor; |
| } |
| |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| return color.hashCode(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.resources.ColorDescriptor#createColor() |
| */ |
| public Color createColor(Device device) { |
| // If this descriptor is wrapping an existing color, then we can return the original color |
| // if this is the same device. |
| if (originalColor != null) { |
| // If we're allocating on the same device as the original color, return the original. |
| if (originalColor.getDevice() == device) { |
| return originalColor; |
| } |
| } |
| |
| return new Color(device, color); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.resource.ColorDescriptor#destroyColor(org.eclipse.swt.graphics.Color) |
| */ |
| public void destroyColor(Color toDestroy) { |
| if (toDestroy == originalColor) { |
| return; |
| } |
| |
| toDestroy.dispose(); |
| } |
| } |