javauis/eswt_akn/org.eclipse.ercp.swt.s60/src/org/eclipse/swt/graphics/Color.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_akn/org.eclipse.ercp.swt.s60/src/org/eclipse/swt/graphics/Color.java Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,316 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 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
+ * Lynne Kues (IBM Corp) - modified to reflect eSWT API subset
+ * Nokia Corporation - S60 implementation
+ *******************************************************************************/
+package org.eclipse.swt.graphics;
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.internal.symbian.*;
+
+/**
+ * Instances of this class manage the operating system resources that
+ * implement SWT'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
+{
+
+ /**
+ * the handle to the OS color resource
+ * (Warning: This field is platform dependent)
+ */
+ public int handle;
+
+ /**
+ * the device where this color was created
+ */
+ Device device;
+
+ /**
+ * Prevents uninitialized instances from being created outside the package.
+ */
+ Color()
+ {
+ }
+
+ /**
+ * 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)
+ {
+ if (device == null) device = Device.getDevice();
+ if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ init(device, red, green, blue);
+ }
+
+ /**
+ * 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)
+ {
+ if (device == null) device = Device.getDevice();
+ if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ if (rgb == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ init(device, rgb.red, rgb.green, rgb.blue);
+ }
+
+ /**
+ * Disposes of the operating system resources associated with
+ * the color. Applications must dispose of all colors which
+ * they allocate.
+ */
+ public void dispose()
+ {
+ if (handle == 0) return;
+ if (device.isDisposed()) return;
+ OS.Color_Dispose(this.device.handle, handle);
+ handle = 0;
+ if (device.tracking) device.dispose_Object(this);
+ device = 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 boolean equals(Object object)
+ {
+ if (object == this) return true;
+ if (!(object instanceof Color)) return false;
+ Color color = (Color) object;
+ return (device == color.device) && ((getRgbValue() & 0xFFFFFF) == (color.getRgbValue() & 0xFFFFFF));
+ }
+
+ /**
+ * Returns the amount of blue in the color, from 0 to 255.
+ *
+ * @return the blue component of the color
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+ public int getBlue()
+ {
+ if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+ return (getRgbValue() & 0xFF0000) >> 16;
+ }
+
+ /**
+ * Returns the amount of green in the color, from 0 to 255.
+ *
+ * @return the green component of the color
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+ public int getGreen()
+ {
+ if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+ return (getRgbValue() & 0xFF00) >> 8 ;
+ }
+
+ /**
+ * Returns the amount of red in the color, from 0 to 255.
+ *
+ * @return the red component of the color
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+ public int getRed()
+ {
+ if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+ return getRgbValue() & 0xFF;
+ }
+
+ /**
+ * Returns an <code>RGB</code> representing the receiver.
+ *
+ * @return the RGB for the color
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+ public RGB getRGB()
+ {
+ if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+ int val = getRgbValue();
+ return new RGB(val & 0xFF, (val & 0xFF00) >> 8, (val & 0xFF0000) >> 16);
+ }
+
+ /**
+ * Returns an integer hash code for the receiver. Any two
+ * objects which 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()
+ {
+ return getRgbValue();
+ }
+
+ /**
+ * Allocates the operating system resources associated
+ * with the receiver.
+ *
+ * @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_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li>
+ * </ul>
+ *
+ * @see #dispose
+ */
+ void init(Device device, int red, int green, int blue)
+ {
+ if (red > 255 || red < 0 || green > 255 || green < 0 || blue > 255 || blue < 0)
+ {
+ SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+ }
+ this.device = device;
+ handle = OS.Color_New(this.device.handle, red, green, blue);
+ try
+ {
+ if (device.tracking) device.new_Object(this);
+ }
+ catch (Error e)
+ {
+ OS.Color_Dispose(this.device.handle, handle);
+ throw e;
+ }
+ }
+
+ /**
+ * 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 boolean isDisposed()
+ {
+ return handle == 0;
+ }
+
+ /**
+ * 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*}"; //$NON-NLS-1$
+ return "Color {" + getRed() + ", " + getGreen() + ", " + getBlue() + "}"; //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
+ }
+
+ private int getRgbValue()
+ {
+ return OS.Color_RgbValue(device.handle, handle);
+ }
+
+
+
+ /**
+ * 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 SWT. 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 font
+ * @return a new font object containing the specified device and handle
+ */
+ public static Color internal_new(Device device, int handle)
+ {
+ if (device == null) device = Device.getDevice();
+ Color color = new Color();
+ color.handle = handle;
+ color.device = device;
+ return color;
+ }
+
+
+}