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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Color.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Color.java | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Color.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Color.java deleted file mode 100644 index d10a9df321..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Color.java +++ /dev/null @@ -1,299 +0,0 @@ -/******************************************************************************* - * 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 - *******************************************************************************/ -package org.eclipse.swt.graphics; - - -import org.eclipse.swt.internal.gtk.*; -import org.eclipse.swt.*; - -/** - * 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 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 SWT - * public API. 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 accessed from application code. - * </p> - */ - public GdkColor handle; - -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); - if (device.tracking) device.new_Object(this); -} - -/** - * 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); - if (device.tracking) device.new_Object(this); -} - -/** - * Disposes of the operating system resources associated with - * the color. Applications must dispose of all colors which - * they allocate. - */ -public void dispose() { - if (handle == null) return; - if (device.isDisposed()) return; - int pixel = handle.pixel; - if (device.colorRefCount != null) { - /* If this was the last reference, remove the color from the list */ - if (--device.colorRefCount[pixel] == 0) { - device.gdkColors[pixel] = null; - } - } - int /*long*/ colormap = OS.gdk_colormap_get_system(); - OS.gdk_colormap_free_colors(colormap, handle, 1); - handle = null; - 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; - GdkColor gdkColor = color.handle; - if (handle == gdkColor) return true; - return device == color.device && handle.red == gdkColor.red && - handle.green == gdkColor.green && handle.blue == gdkColor.blue; -} - -/** - * 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 (handle.blue >> 8) & 0xFF; -} - -/** - * 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 (handle.green >> 8) & 0xFF; -} - -/** - * 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 (handle.red >> 8) & 0xFF; -} - -/** - * 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 handle.red ^ handle.green ^ handle.blue; -} - -/** - * 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); - 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 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 color - * - * @private - */ -public static Color gtk_new(Device device, GdkColor gdkColor) { - if (device == null) device = Device.getDevice(); - Color color = new Color(); - color.handle = gdkColor; - color.device = device; - return color; -} - -void init(Device device, int red, int green, int blue) { - this.device = device; - if ((red > 255) || (red < 0) || - (green > 255) || (green < 0) || - (blue > 255) || (blue < 0)) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - GdkColor gdkColor = new GdkColor(); - gdkColor.red = (short)((red & 0xFF) | ((red & 0xFF) << 8)); - gdkColor.green = (short)((green & 0xFF) | ((green & 0xFF) << 8)); - gdkColor.blue = (short)((blue & 0xFF) | ((blue & 0xFF) << 8)); - int /*long*/ colormap = OS.gdk_colormap_get_system(); - if (!OS.gdk_colormap_alloc_color(colormap, gdkColor, true, true)) { - /* Allocate black. */ - gdkColor = new GdkColor(); - OS.gdk_colormap_alloc_color(colormap, gdkColor, true, true); - } - handle = gdkColor; - if (device.colorRefCount != null) { - /* Make a copy of the color to put in the colors array */ - GdkColor colorCopy = new GdkColor(); - colorCopy.red = handle.red; - colorCopy.green = handle.green; - colorCopy.blue = handle.blue; - colorCopy.pixel = handle.pixel; - device.gdkColors[colorCopy.pixel] = colorCopy; - device.colorRefCount[colorCopy.pixel]++; - } -} - -/** - * 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 == 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() + "}"; -} - -} |