| /* |
| * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * (C) Copyright Taligent, Inc. 1996 - 1997, All Rights Reserved |
| * (C) Copyright IBM Corp. 1996 - 1998, All Rights Reserved |
| * |
| * The original version of this source code and documentation is |
| * copyrighted and owned by Taligent, Inc., a wholly-owned subsidiary |
| * of IBM. These materials are provided under terms of a License |
| * Agreement between Taligent and Sun. This technology is protected |
| * by multiple US and International patents. |
| * |
| * This notice and attribution to Taligent may not be removed. |
| * Taligent is a registered trademark of Taligent, Inc. |
| * |
| */ |
| |
| package java.awt.font; |
| |
| import java.awt.Image; |
| import java.awt.Graphics2D; |
| import java.awt.geom.Rectangle2D; |
| |
| /** |
| * The {@code ImageGraphicAttribute} class is an implementation of |
| * {@link GraphicAttribute} which draws images in |
| * a {@link TextLayout}. |
| * @see GraphicAttribute |
| */ |
| |
| public final class ImageGraphicAttribute extends GraphicAttribute { |
| |
| private Image fImage; |
| private float fImageWidth, fImageHeight; |
| private float fOriginX, fOriginY; |
| |
| /** |
| * Constructs an {@code ImageGraphicAttribute} from the specified |
| * {@link Image}. The origin is at (0, 0). |
| * @param image the {@code Image} rendered by this |
| * {@code ImageGraphicAttribute}. |
| * This object keeps a reference to {@code image}. |
| * @param alignment one of the alignments from this |
| * {@code ImageGraphicAttribute} |
| */ |
| public ImageGraphicAttribute(Image image, int alignment) { |
| |
| this(image, alignment, 0, 0); |
| } |
| |
| /** |
| * Constructs an {@code ImageGraphicAttribute} from the specified |
| * {@code Image}. The point |
| * ({@code originX}, {@code originY}) in the |
| * {@code Image} appears at the origin of the |
| * {@code ImageGraphicAttribute} within the text. |
| * @param image the {@code Image} rendered by this |
| * {@code ImageGraphicAttribute}. |
| * This object keeps a reference to {@code image}. |
| * @param alignment one of the alignments from this |
| * {@code ImageGraphicAttribute} |
| * @param originX the X coordinate of the point within |
| * the {@code Image} that appears at the origin of the |
| * {@code ImageGraphicAttribute} in the text line. |
| * @param originY the Y coordinate of the point within |
| * the {@code Image} that appears at the origin of the |
| * {@code ImageGraphicAttribute} in the text line. |
| */ |
| public ImageGraphicAttribute(Image image, |
| int alignment, |
| float originX, |
| float originY) { |
| |
| super(alignment); |
| |
| // Can't clone image |
| // fImage = (Image) image.clone(); |
| fImage = image; |
| |
| fImageWidth = image.getWidth(null); |
| fImageHeight = image.getHeight(null); |
| |
| // ensure origin is in Image? |
| fOriginX = originX; |
| fOriginY = originY; |
| } |
| |
| /** |
| * Returns the ascent of this {@code ImageGraphicAttribute}. The |
| * ascent of an {@code ImageGraphicAttribute} is the distance |
| * from the top of the image to the origin. |
| * @return the ascent of this {@code ImageGraphicAttribute}. |
| */ |
| public float getAscent() { |
| |
| return Math.max(0, fOriginY); |
| } |
| |
| /** |
| * Returns the descent of this {@code ImageGraphicAttribute}. |
| * The descent of an {@code ImageGraphicAttribute} is the |
| * distance from the origin to the bottom of the image. |
| * @return the descent of this {@code ImageGraphicAttribute}. |
| */ |
| public float getDescent() { |
| |
| return Math.max(0, fImageHeight-fOriginY); |
| } |
| |
| /** |
| * Returns the advance of this {@code ImageGraphicAttribute}. |
| * The advance of an {@code ImageGraphicAttribute} is the |
| * distance from the origin to the right edge of the image. |
| * @return the advance of this {@code ImageGraphicAttribute}. |
| */ |
| public float getAdvance() { |
| |
| return Math.max(0, fImageWidth-fOriginX); |
| } |
| |
| /** |
| * Returns a {@link Rectangle2D} that encloses all of the |
| * bits rendered by this {@code ImageGraphicAttribute}, relative |
| * to the rendering position. A graphic can be rendered beyond its |
| * origin, ascent, descent, or advance; but if it is, this |
| * method's implementation must indicate where the graphic is rendered. |
| * @return a {@code Rectangle2D} that encloses all of the bits |
| * rendered by this {@code ImageGraphicAttribute}. |
| */ |
| public Rectangle2D getBounds() { |
| |
| return new Rectangle2D.Float( |
| -fOriginX, -fOriginY, fImageWidth, fImageHeight); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void draw(Graphics2D graphics, float x, float y) { |
| |
| graphics.drawImage(fImage, (int) (x-fOriginX), (int) (y-fOriginY), null); |
| } |
| |
| /** |
| * Returns a hashcode for this {@code ImageGraphicAttribute}. |
| * @return a hash code value for this object. |
| */ |
| public int hashCode() { |
| |
| return fImage.hashCode(); |
| } |
| |
| /** |
| * Compares this {@code ImageGraphicAttribute} to the specified |
| * {@link Object}. |
| * @param rhs the {@code Object} to compare for equality |
| * @return {@code true} if this |
| * {@code ImageGraphicAttribute} equals {@code rhs}; |
| * {@code false} otherwise. |
| */ |
| public boolean equals(Object rhs) { |
| |
| try { |
| return equals((ImageGraphicAttribute) rhs); |
| } |
| catch(ClassCastException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Compares this {@code ImageGraphicAttribute} to the specified |
| * {@code ImageGraphicAttribute}. |
| * @param rhs the {@code ImageGraphicAttribute} to compare for |
| * equality |
| * @return {@code true} if this |
| * {@code ImageGraphicAttribute} equals {@code rhs}; |
| * {@code false} otherwise. |
| */ |
| public boolean equals(ImageGraphicAttribute rhs) { |
| |
| if (rhs == null) { |
| return false; |
| } |
| |
| if (this == rhs) { |
| return true; |
| } |
| |
| if (fOriginX != rhs.fOriginX || fOriginY != rhs.fOriginY) { |
| return false; |
| } |
| |
| if (getAlignment() != rhs.getAlignment()) { |
| return false; |
| } |
| |
| if (!fImage.equals(rhs.fImage)) { |
| return false; |
| } |
| |
| return true; |
| } |
| } |
