mirror of git://gcc.gnu.org/git/gcc.git
324 lines
7.4 KiB
Java
324 lines
7.4 KiB
Java
/* Copyright (C) 2000, 2002 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.geom;
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import java.awt.*;
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import java.awt.geom.Rectangle2D;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date April 16, 2000
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*/
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public abstract class RectangularShape implements Shape, Cloneable
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{
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protected RectangularShape ()
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{
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}
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public abstract double getX ();
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public abstract double getY ();
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public abstract double getWidth ();
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public abstract double getHeight ();
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public double getMinX ()
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{
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return Math.min (getX (), getX () + getWidth ());
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}
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public double getMinY ()
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{
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return Math.min (getY (), getY () + getHeight ());
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}
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public double getMaxX ()
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{
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return Math.max (getX (), getX () + getWidth ());
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}
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public double getMaxY ()
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{
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return Math.max (getY (), getY () + getHeight ());
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}
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public double getCenterX ()
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{
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return getX () + getWidth () / 2;
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}
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public double getCenterY ()
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{
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return getY () + getHeight () / 2;
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}
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public Rectangle2D getFrame ()
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{
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return new Rectangle2D.Double (getX (), getY (),
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getWidth (), getHeight ());
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}
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public abstract boolean isEmpty ();
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public abstract void setFrame (double x, double y, double w, double h);
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public void setFrame (Point2D loc, Dimension2D size)
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{
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setFrame (loc.getX (), loc.getY (), size.getWidth (), size.getHeight ());
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}
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public void setFrame (Rectangle2D r)
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{
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setFrame (r.getX (), r.getY (), r.getWidth (), r.getHeight ());
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}
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public void setFrameFromDiagonal (double x1, double y1,
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double x2, double y2)
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{
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if (x1 > x2)
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{
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double t = x2;
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x2 = x1;
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x1 = t;
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}
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if (y1 > y2)
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{
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double t = y2;
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y2 = y1;
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y1 = t;
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}
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setFrame (x1, y1, x2 - x1, y2 - y1);
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}
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public void setFrameFromDiagonal (Point2D p1, Point2D p2)
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{
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setFrameFromDiagonal (p1.getX (), p1.getY (),
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p2.getX (), p2.getY ());
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}
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public void setFrameFromCenter (double centerX, double centerY,
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double cornerX, double cornerY)
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{
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double halfw = Math.abs (cornerX - centerX);
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double halfh = Math.abs (cornerY - centerY);
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setFrame (centerX - halfw, centerY - halfh,
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2 * halfw, 2 * halfh);
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}
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public void setFrameFromCenter (Point2D center, Point2D corner)
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{
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setFrameFromCenter (center.getX (), center.getY (),
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corner.getX (), corner.getY ());
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}
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public boolean contains (Point2D p)
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{
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double x = p.getX ();
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double y = p.getY ();
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double rx = getX ();
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double ry = getY ();
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double w = getWidth ();
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double h = getHeight ();
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return x >= rx && x < rx + w && y >= ry && y < ry + h;
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}
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public boolean intersects (Rectangle2D r)
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{
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double x = getX ();
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double w = getWidth ();
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double mx = r.getX ();
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double mw = r.getWidth ();
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if (x < mx || x >= mx + mw || x + w < mx || x + w >= mx + mw)
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return false;
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double y = getY ();
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double h = getHeight ();
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double my = r.getY ();
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double mh = r.getHeight ();
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return y >= my && y < my + mh && y + h >= my && y + h < my + mh;
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}
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private boolean containsPoint (double x, double y)
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{
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double mx = getX ();
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double mw = getWidth ();
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if (x < mx || x >= mx + mw)
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return false;
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double my = getY ();
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double mh = getHeight ();
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return y >= my && y < my + mh;
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}
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public boolean contains (Rectangle2D r)
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{
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return (containsPoint (r.getMinX (), r.getMinY ())
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&& containsPoint (r.getMaxX (), r.getMaxY ()));
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}
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public Rectangle getBounds ()
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{
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return new Rectangle ((int) getX (), (int) getY (),
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(int) getWidth (), (int) getHeight ());
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}
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public PathIterator getPathIterator (AffineTransform at, double flatness)
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{
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return at.new Iterator (new Iterator ());
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}
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public Object clone ()
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{
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try
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{
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return super.clone ();
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}
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catch (CloneNotSupportedException _) {return null;}
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}
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// This implements the PathIterator for all RectangularShape objects
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// that don't override getPathIterator.
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private class Iterator implements PathIterator
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{
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// Our current coordinate.
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private int coord;
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private static final int START = 0;
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private static final int END_PLUS_ONE = 5;
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public Iterator ()
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{
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coord = START;
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}
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public int currentSegment (double[] coords)
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{
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int r;
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switch (coord)
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{
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case 0:
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coords[0] = getX ();
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coords[1] = getY ();
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r = SEG_MOVETO;
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break;
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case 1:
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coords[0] = getX () + getWidth ();
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coords[1] = getY ();
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r = SEG_LINETO;
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break;
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case 2:
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coords[0] = getX () + getWidth ();
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coords[1] = getY () + getHeight ();
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r = SEG_LINETO;
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break;
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case 3:
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coords[0] = getX ();
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coords[1] = getY () + getHeight ();
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r = SEG_LINETO;
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break;
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case 4:
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r = SEG_CLOSE;
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break;
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default:
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// It isn't clear what to do if the caller calls us after
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// isDone returns true.
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r = SEG_CLOSE;
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break;
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}
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return r;
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}
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public int currentSegment (float[] coords)
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{
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int r;
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switch (coord)
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{
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case 0:
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coords[0] = (float) getX ();
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coords[1] = (float) getY ();
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r = SEG_MOVETO;
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break;
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case 1:
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coords[0] = (float) (getX () + getWidth ());
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coords[1] = (float) getY ();
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r = SEG_LINETO;
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break;
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case 2:
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coords[0] = (float) (getX () + getWidth ());
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coords[1] = (float) (getY () + getHeight ());
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r = SEG_LINETO;
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break;
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case 3:
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coords[0] = (float) getX ();
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coords[1] = (float) (getY () + getHeight ());
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r = SEG_LINETO;
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break;
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case 4:
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default:
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// It isn't clear what to do if the caller calls us after
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// isDone returns true. We elect to keep returning
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// SEG_CLOSE.
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r = SEG_CLOSE;
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break;
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}
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return r;
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}
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public int getWindingRule ()
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{
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return WIND_NON_ZERO;
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}
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public boolean isDone ()
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{
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return coord == END_PLUS_ONE;
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}
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public void next ()
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{
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if (coord < END_PLUS_ONE)
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++coord;
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}
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}
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}
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