--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/graphics/Color.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,266 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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
+ *******************************************************************************/
+module dwt.graphics.Color;
+
+import dwt.dwthelper.utils;
+
+
+import dwt.DWT;
+import dwt.DWTException;
+
+/**
+ * Instances of this class manage the operating system resources that
+ * implement DWT's RGB color model. To create a color you can either
+ * specify the individual color components as integers in the range 
+ * 0 to 255 or provide an instance of an <code>RGB</code>. 
+ * <p>
+ * Application code must explicitly invoke the <code>Color.dispose()</code> 
+ * method to release the operating system resources managed by each instance
+ * when those instances are no longer required.
+ * </p>
+ *
+ * @see RGB
+ * @see Device#getSystemColor
+ */
+public final class Color extends Resource {
+    /**
+     * the handle to the OS color resource 
+     * (Warning: This field is platform dependent)
+     * <p>
+     * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
+     * public API. It is marked public only so that it can be shared
+     * within the packages provided by DWT. It is not available on all
+     * platforms and should never be accessed from application code.
+     * </p>
+     */
+    public float[] handle;
+
+Color(Device device) {
+    super(device);
+}
+
+/**  
+ * Constructs a new instance of this class given a device and the
+ * desired red, green and blue values expressed as ints in the range
+ * 0 to 255 (where 0 is black and 255 is full brightness). On limited
+ * color devices, the color instance created by this call may not have
+ * the same RGB values as the ones specified by the arguments. The
+ * RGB values on the returned instance will be the color values of 
+ * the operating system color.
+ * <p>
+ * You must dispose the color when it is no longer required. 
+ * </p>
+ *
+ * @param device the device on which to allocate the color
+ * @param red the amount of red in the color
+ * @param green the amount of green in the color
+ * @param blue the amount of blue in the color
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li>
+ * </ul>
+ *
+ * @see #dispose
+ */
+public Color(Device device, int red, int green, int blue) {
+    super(device);
+    init(red, green, blue);
+    init();
+}
+
+/**  
+ * Constructs a new instance of this class given a device and an
+ * <code>RGB</code> describing the desired red, green and blue values.
+ * On limited color devices, the color instance created by this call
+ * may not have the same RGB values as the ones specified by the
+ * argument. The RGB values on the returned instance will be the color
+ * values of the operating system color.
+ * <p>
+ * You must dispose the color when it is no longer required. 
+ * </p>
+ *
+ * @param device the device on which to allocate the color
+ * @param rgb the RGB values of the desired color
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
+ *    <li>ERROR_NULL_ARGUMENT - if the rgb argument is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the red, green or blue components of the argument are not between 0 and 255</li>
+ * </ul>
+ *
+ * @see #dispose
+ */
+public Color(Device device, RGB rgb) {
+    super(device);
+    if (rgb is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
+    init(rgb.red, rgb.green, rgb.blue);
+    init();
+}
+
+void destroy() {
+    handle = null;
+}
+
+/**
+ * Compares the argument to the receiver, and returns true
+ * if they represent the <em>same</em> object using a class
+ * specific comparison.
+ *
+ * @param object the object to compare with this object
+ * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
+ *
+ * @see #hashCode
+ */
+public bool equals(Object object) {
+    if (object is this) return true;
+    if (!(object instanceof Color)) return false;
+    Color color = (Color)object;
+    float[] rgbColor = color.handle;
+    if (handle is rgbColor) return true;
+    return device is color.device &&
+        (int)(handle[0] * 255) is (int)(rgbColor[0] * 255) &&
+        (int)(handle[1] * 255) is (int)(rgbColor[1] * 255) &&
+        (int)(handle[2] * 255) is (int)(rgbColor[2] * 255);
+}
+
+/**
+ * Returns the amount of blue in the color, from 0 to 255.
+ *
+ * @return the blue component of the color
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getBlue() {
+    if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
+    return (int)(handle[2] * 255);
+}
+
+/**
+ * Returns the amount of green in the color, from 0 to 255.
+ *
+ * @return the green component of the color
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getGreen() {
+    if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
+    return (int)(handle[1] * 255);
+}
+
+/**
+ * Returns the amount of red in the color, from 0 to 255.
+ *
+ * @return the red component of the color
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getRed() {
+    if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
+    return (int)(handle[0] * 255);
+}
+
+/**
+ * Returns an integer hash code for the receiver. Any two 
+ * objects that return <code>true</code> when passed to 
+ * <code>equals</code> must return the same value for this
+ * method.
+ *
+ * @return the receiver's hash
+ *
+ * @see #equals
+ */
+public int hashCode() {
+    if (isDisposed()) return 0;
+    return (int)(handle[0] * 255) ^ (int)(handle[1] * 255) ^ (int)(handle[2] * 255);
+}
+
+/**
+ * Returns an <code>RGB</code> representing the receiver.
+ *
+ * @return the RGB for the color
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public RGB getRGB () {
+    if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
+    return new RGB(getRed(), getGreen(), getBlue());
+}
+
+/**  
+ * Invokes platform specific functionality to allocate a new color.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
+ * API for <code>Color</code>. It is marked public only so that it
+ * can be shared within the packages provided by DWT. It is not
+ * available on all platforms, and should never be called from
+ * application code.
+ * </p>
+ *
+ * @param device the device on which to allocate the color
+ * @param handle the handle for the color
+ * 
+ * @private
+ */
+public static Color cocoa_new(Device device, float[] rgbColor) {
+    Color color = new Color(device);
+    color.handle = rgbColor;
+    return color;
+}
+
+void init(int red, int green, int blue) {
+    if ((red > 255) || (red < 0) ||
+        (green > 255) || (green < 0) ||
+        (blue > 255) || (blue < 0)) {
+            DWT.error(DWT.ERROR_INVALID_ARGUMENT);
+    }
+    float[] rgbColor = new float[4];
+    rgbColor[0] = red / 255f;
+    rgbColor[1] = green / 255f;
+    rgbColor[2] = blue / 255f;
+    rgbColor[3] = 1;
+    handle = rgbColor;
+}
+
+/**
+ * Returns <code>true</code> if the color has been disposed,
+ * and <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the color.
+ * When a color has been disposed, it is an error to
+ * invoke any other method using the color.
+ *
+ * @return <code>true</code> when the color is disposed and <code>false</code> otherwise
+ */
+public bool isDisposed() {
+    return handle is null;
+}
+
+/**
+ * Returns a string containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a string representation of the receiver
+ */
+public String toString () {
+    if (isDisposed()) return "Color {*DISPOSED*}";
+    return "Color {" + getRed() + ", " + getGreen() + ", " + getBlue() + "}";
+}
+
+}