| /* |
| * 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.Shape; |
| import java.awt.Graphics; |
| import java.awt.Rectangle; |
| import java.awt.Graphics2D; |
| import java.awt.Shape; |
| import java.awt.geom.AffineTransform; |
| import java.awt.geom.Rectangle2D; |
| |
| /** |
| * The <code>ShapeGraphicAttribute</code> class is an implementation of |
| * {@link GraphicAttribute} that draws shapes in a {@link TextLayout}. |
| * @see GraphicAttribute |
| */ |
| public final class ShapeGraphicAttribute extends GraphicAttribute { |
| |
| private Shape fShape; |
| private boolean fStroke; |
| |
| /** |
| * A key indicating the shape should be stroked with a 1-pixel wide stroke. |
| */ |
| public static final boolean STROKE = true; |
| |
| /** |
| * A key indicating the shape should be filled. |
| */ |
| public static final boolean FILL = false; |
| |
| // cache shape bounds, since GeneralPath doesn't |
| private Rectangle2D fShapeBounds; |
| |
| /** |
| * Constructs a <code>ShapeGraphicAttribute</code> for the specified |
| * {@link Shape}. |
| * @param shape the <code>Shape</code> to render. The |
| * <code>Shape</code> is rendered with its origin at the origin of |
| * this <code>ShapeGraphicAttribute</code> in the |
| * host <code>TextLayout</code>. This object maintains a reference to |
| * <code>shape</code>. |
| * @param alignment one of the alignments from this |
| * <code>ShapeGraphicAttribute</code>. |
| * @param stroke <code>true</code> if the <code>Shape</code> should be |
| * stroked; <code>false</code> if the <code>Shape</code> should be |
| * filled. |
| */ |
| public ShapeGraphicAttribute(Shape shape, |
| int alignment, |
| boolean stroke) { |
| |
| super(alignment); |
| |
| fShape = shape; |
| fStroke = stroke; |
| fShapeBounds = fShape.getBounds2D(); |
| } |
| |
| /** |
| * Returns the ascent of this <code>ShapeGraphicAttribute</code>. The |
| * ascent of a <code>ShapeGraphicAttribute</code> is the positive |
| * distance from the origin of its <code>Shape</code> to the top of |
| * bounds of its <code>Shape</code>. |
| * @return the ascent of this <code>ShapeGraphicAttribute</code>. |
| */ |
| public float getAscent() { |
| |
| return (float) Math.max(0, -fShapeBounds.getMinY()); |
| } |
| |
| /** |
| * Returns the descent of this <code>ShapeGraphicAttribute</code>. |
| * The descent of a <code>ShapeGraphicAttribute</code> is the distance |
| * from the origin of its <code>Shape</code> to the bottom of the |
| * bounds of its <code>Shape</code>. |
| * @return the descent of this <code>ShapeGraphicAttribute</code>. |
| */ |
| public float getDescent() { |
| |
| return (float) Math.max(0, fShapeBounds.getMaxY()); |
| } |
| |
| /** |
| * Returns the advance of this <code>ShapeGraphicAttribute</code>. |
| * The advance of a <code>ShapeGraphicAttribute</code> is the distance |
| * from the origin of its <code>Shape</code> to the right side of the |
| * bounds of its <code>Shape</code>. |
| * @return the advance of this <code>ShapeGraphicAttribute</code>. |
| */ |
| public float getAdvance() { |
| |
| return (float) Math.max(0, fShapeBounds.getMaxX()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void draw(Graphics2D graphics, float x, float y) { |
| |
| // translating graphics to draw Shape !!! |
| graphics.translate((int)x, (int)y); |
| |
| try { |
| if (fStroke == STROKE) { |
| // REMIND: set stroke to correct size |
| graphics.draw(fShape); |
| } |
| else { |
| graphics.fill(fShape); |
| } |
| } |
| finally { |
| graphics.translate(-(int)x, -(int)y); |
| } |
| } |
| |
| /** |
| * Returns a {@link Rectangle2D} that encloses all of the |
| * bits drawn by this <code>ShapeGraphicAttribute</code> relative to |
| * the rendering position. A graphic can be rendered beyond its |
| * origin, ascent, descent, or advance; but if it does, this method's |
| * implementation should indicate where the graphic is rendered. |
| * @return a <code>Rectangle2D</code> that encloses all of the bits |
| * rendered by this <code>ShapeGraphicAttribute</code>. |
| */ |
| public Rectangle2D getBounds() { |
| |
| Rectangle2D.Float bounds = new Rectangle2D.Float(); |
| bounds.setRect(fShapeBounds); |
| |
| if (fStroke == STROKE) { |
| ++bounds.width; |
| ++bounds.height; |
| } |
| |
| return bounds; |
| } |
| |
| /** |
| * Return a {@link java.awt.Shape} that represents the region that |
| * this <code>ShapeGraphicAttribute</code> renders. This is used when a |
| * {@link TextLayout} is requested to return the outline of the text. |
| * The (untransformed) shape must not extend outside the rectangular |
| * bounds returned by <code>getBounds</code>. |
| * @param tx an optional {@link AffineTransform} to apply to the |
| * this <code>ShapeGraphicAttribute</code>. This can be null. |
| * @return the <code>Shape</code> representing this graphic attribute, |
| * suitable for stroking or filling. |
| * @since 1.6 |
| */ |
| public Shape getOutline(AffineTransform tx) { |
| return tx == null ? fShape : tx.createTransformedShape(fShape); |
| } |
| |
| /** |
| * Returns a hashcode for this <code>ShapeGraphicAttribute</code>. |
| * @return a hash code value for this |
| * <code>ShapeGraphicAttribute</code>. |
| */ |
| public int hashCode() { |
| |
| return fShape.hashCode(); |
| } |
| |
| /** |
| * Compares this <code>ShapeGraphicAttribute</code> to the specified |
| * <code>Object</code>. |
| * @param rhs the <code>Object</code> to compare for equality |
| * @return <code>true</code> if this |
| * <code>ShapeGraphicAttribute</code> equals <code>rhs</code>; |
| * <code>false</code> otherwise. |
| */ |
| public boolean equals(Object rhs) { |
| |
| try { |
| return equals((ShapeGraphicAttribute) rhs); |
| } |
| catch(ClassCastException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Compares this <code>ShapeGraphicAttribute</code> to the specified |
| * <code>ShapeGraphicAttribute</code>. |
| * @param rhs the <code>ShapeGraphicAttribute</code> to compare for |
| * equality |
| * @return <code>true</code> if this |
| * <code>ShapeGraphicAttribute</code> equals <code>rhs</code>; |
| * <code>false</code> otherwise. |
| */ |
| public boolean equals(ShapeGraphicAttribute rhs) { |
| |
| if (rhs == null) { |
| return false; |
| } |
| |
| if (this == rhs) { |
| return true; |
| } |
| |
| if (fStroke != rhs.fStroke) { |
| return false; |
| } |
| |
| if (getAlignment() != rhs.getAlignment()) { |
| return false; |
| } |
| |
| if (!fShape.equals(rhs.fShape)) { |
| return false; |
| } |
| |
| return true; |
| } |
| } |
