| /* |
| * Copyright (c) 1997, 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. |
| */ |
| |
| package java.awt.geom; |
| |
| import java.io.Serializable; |
| |
| /** |
| * The <code>RoundRectangle2D</code> class defines a rectangle with |
| * rounded corners defined by a location {@code (x,y)}, a |
| * dimension {@code (w x h)}, and the width and height of an arc |
| * with which to round the corners. |
| * <p> |
| * This class is the abstract superclass for all objects that |
| * store a 2D rounded rectangle. |
| * The actual storage representation of the coordinates is left to |
| * the subclass. |
| * |
| * @author Jim Graham |
| * @since 1.2 |
| */ |
| public abstract class RoundRectangle2D extends RectangularShape { |
| |
| /** |
| * The <code>Float</code> class defines a rectangle with rounded |
| * corners all specified in <code>float</code> coordinates. |
| * @since 1.2 |
| */ |
| public static class Float extends RoundRectangle2D |
| implements Serializable |
| { |
| /** |
| * The X coordinate of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public float x; |
| |
| /** |
| * The Y coordinate of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public float y; |
| |
| /** |
| * The width of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public float width; |
| |
| /** |
| * The height of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public float height; |
| |
| /** |
| * The width of the arc that rounds off the corners. |
| * @since 1.2 |
| * @serial |
| */ |
| public float arcwidth; |
| |
| /** |
| * The height of the arc that rounds off the corners. |
| * @since 1.2 |
| * @serial |
| */ |
| public float archeight; |
| |
| /** |
| * Constructs a new <code>RoundRectangle2D</code>, initialized to |
| * location (0.0, 0.0), size (0.0, 0.0), and corner arcs |
| * of radius 0.0. |
| * @since 1.2 |
| */ |
| public Float() { |
| } |
| |
| /** |
| * Constructs and initializes a <code>RoundRectangle2D</code> |
| * from the specified <code>float</code> coordinates. |
| * |
| * @param x the X coordinate of the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param y the Y coordinate of the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param w the width to which to set the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param h the height to which to set the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param arcw the width of the arc to use to round off the |
| * corners of the newly constructed |
| * <code>RoundRectangle2D</code> |
| * @param arch the height of the arc to use to round off the |
| * corners of the newly constructed |
| * <code>RoundRectangle2D</code> |
| * @since 1.2 |
| */ |
| public Float(float x, float y, float w, float h, |
| float arcw, float arch) |
| { |
| setRoundRect(x, y, w, h, arcw, arch); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getX() { |
| return (double) x; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getY() { |
| return (double) y; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getWidth() { |
| return (double) width; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getHeight() { |
| return (double) height; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getArcWidth() { |
| return (double) arcwidth; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getArcHeight() { |
| return (double) archeight; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public boolean isEmpty() { |
| return (width <= 0.0f) || (height <= 0.0f); |
| } |
| |
| /** |
| * Sets the location, size, and corner radii of this |
| * <code>RoundRectangle2D</code> to the specified |
| * <code>float</code> values. |
| * |
| * @param x the X coordinate to which to set the |
| * location of this <code>RoundRectangle2D</code> |
| * @param y the Y coordinate to which to set the |
| * location of this <code>RoundRectangle2D</code> |
| * @param w the width to which to set this |
| * <code>RoundRectangle2D</code> |
| * @param h the height to which to set this |
| * <code>RoundRectangle2D</code> |
| * @param arcw the width to which to set the arc of this |
| * <code>RoundRectangle2D</code> |
| * @param arch the height to which to set the arc of this |
| * <code>RoundRectangle2D</code> |
| * @since 1.2 |
| */ |
| public void setRoundRect(float x, float y, float w, float h, |
| float arcw, float arch) |
| { |
| this.x = x; |
| this.y = y; |
| this.width = w; |
| this.height = h; |
| this.arcwidth = arcw; |
| this.archeight = arch; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public void setRoundRect(double x, double y, double w, double h, |
| double arcw, double arch) |
| { |
| this.x = (float) x; |
| this.y = (float) y; |
| this.width = (float) w; |
| this.height = (float) h; |
| this.arcwidth = (float) arcw; |
| this.archeight = (float) arch; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public void setRoundRect(RoundRectangle2D rr) { |
| this.x = (float) rr.getX(); |
| this.y = (float) rr.getY(); |
| this.width = (float) rr.getWidth(); |
| this.height = (float) rr.getHeight(); |
| this.arcwidth = (float) rr.getArcWidth(); |
| this.archeight = (float) rr.getArcHeight(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public Rectangle2D getBounds2D() { |
| return new Rectangle2D.Float(x, y, width, height); |
| } |
| |
| /* |
| * JDK 1.6 serialVersionUID |
| */ |
| private static final long serialVersionUID = -3423150618393866922L; |
| } |
| |
| /** |
| * The <code>Double</code> class defines a rectangle with rounded |
| * corners all specified in <code>double</code> coordinates. |
| * @since 1.2 |
| */ |
| public static class Double extends RoundRectangle2D |
| implements Serializable |
| { |
| /** |
| * The X coordinate of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public double x; |
| |
| /** |
| * The Y coordinate of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public double y; |
| |
| /** |
| * The width of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public double width; |
| |
| /** |
| * The height of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| * @serial |
| */ |
| public double height; |
| |
| /** |
| * The width of the arc that rounds off the corners. |
| * @since 1.2 |
| * @serial |
| */ |
| public double arcwidth; |
| |
| /** |
| * The height of the arc that rounds off the corners. |
| * @since 1.2 |
| * @serial |
| */ |
| public double archeight; |
| |
| /** |
| * Constructs a new <code>RoundRectangle2D</code>, initialized to |
| * location (0.0, 0.0), size (0.0, 0.0), and corner arcs |
| * of radius 0.0. |
| * @since 1.2 |
| */ |
| public Double() { |
| } |
| |
| /** |
| * Constructs and initializes a <code>RoundRectangle2D</code> |
| * from the specified <code>double</code> coordinates. |
| * |
| * @param x the X coordinate of the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param y the Y coordinate of the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param w the width to which to set the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param h the height to which to set the newly |
| * constructed <code>RoundRectangle2D</code> |
| * @param arcw the width of the arc to use to round off the |
| * corners of the newly constructed |
| * <code>RoundRectangle2D</code> |
| * @param arch the height of the arc to use to round off the |
| * corners of the newly constructed |
| * <code>RoundRectangle2D</code> |
| * @since 1.2 |
| */ |
| public Double(double x, double y, double w, double h, |
| double arcw, double arch) |
| { |
| setRoundRect(x, y, w, h, arcw, arch); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getX() { |
| return x; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getY() { |
| return y; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getWidth() { |
| return width; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getHeight() { |
| return height; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getArcWidth() { |
| return arcwidth; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public double getArcHeight() { |
| return archeight; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public boolean isEmpty() { |
| return (width <= 0.0f) || (height <= 0.0f); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public void setRoundRect(double x, double y, double w, double h, |
| double arcw, double arch) |
| { |
| this.x = x; |
| this.y = y; |
| this.width = w; |
| this.height = h; |
| this.arcwidth = arcw; |
| this.archeight = arch; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public void setRoundRect(RoundRectangle2D rr) { |
| this.x = rr.getX(); |
| this.y = rr.getY(); |
| this.width = rr.getWidth(); |
| this.height = rr.getHeight(); |
| this.arcwidth = rr.getArcWidth(); |
| this.archeight = rr.getArcHeight(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public Rectangle2D getBounds2D() { |
| return new Rectangle2D.Double(x, y, width, height); |
| } |
| |
| /* |
| * JDK 1.6 serialVersionUID |
| */ |
| private static final long serialVersionUID = 1048939333485206117L; |
| } |
| |
| /** |
| * This is an abstract class that cannot be instantiated directly. |
| * Type-specific implementation subclasses are available for |
| * instantiation and provide a number of formats for storing |
| * the information necessary to satisfy the various accessor |
| * methods below. |
| * |
| * @see java.awt.geom.RoundRectangle2D.Float |
| * @see java.awt.geom.RoundRectangle2D.Double |
| * @since 1.2 |
| */ |
| protected RoundRectangle2D() { |
| } |
| |
| /** |
| * Gets the width of the arc that rounds off the corners. |
| * @return the width of the arc that rounds off the corners |
| * of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| */ |
| public abstract double getArcWidth(); |
| |
| /** |
| * Gets the height of the arc that rounds off the corners. |
| * @return the height of the arc that rounds off the corners |
| * of this <code>RoundRectangle2D</code>. |
| * @since 1.2 |
| */ |
| public abstract double getArcHeight(); |
| |
| /** |
| * Sets the location, size, and corner radii of this |
| * <code>RoundRectangle2D</code> to the specified |
| * <code>double</code> values. |
| * |
| * @param x the X coordinate to which to set the |
| * location of this <code>RoundRectangle2D</code> |
| * @param y the Y coordinate to which to set the |
| * location of this <code>RoundRectangle2D</code> |
| * @param w the width to which to set this |
| * <code>RoundRectangle2D</code> |
| * @param h the height to which to set this |
| * <code>RoundRectangle2D</code> |
| * @param arcWidth the width to which to set the arc of this |
| * <code>RoundRectangle2D</code> |
| * @param arcHeight the height to which to set the arc of this |
| * <code>RoundRectangle2D</code> |
| * @since 1.2 |
| */ |
| public abstract void setRoundRect(double x, double y, double w, double h, |
| double arcWidth, double arcHeight); |
| |
| /** |
| * Sets this <code>RoundRectangle2D</code> to be the same as the |
| * specified <code>RoundRectangle2D</code>. |
| * @param rr the specified <code>RoundRectangle2D</code> |
| * @since 1.2 |
| */ |
| public void setRoundRect(RoundRectangle2D rr) { |
| setRoundRect(rr.getX(), rr.getY(), rr.getWidth(), rr.getHeight(), |
| rr.getArcWidth(), rr.getArcHeight()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public void setFrame(double x, double y, double w, double h) { |
| setRoundRect(x, y, w, h, getArcWidth(), getArcHeight()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public boolean contains(double x, double y) { |
| if (isEmpty()) { |
| return false; |
| } |
| double rrx0 = getX(); |
| double rry0 = getY(); |
| double rrx1 = rrx0 + getWidth(); |
| double rry1 = rry0 + getHeight(); |
| // Check for trivial rejection - point is outside bounding rectangle |
| if (x < rrx0 || y < rry0 || x >= rrx1 || y >= rry1) { |
| return false; |
| } |
| double aw = Math.min(getWidth(), Math.abs(getArcWidth())) / 2.0; |
| double ah = Math.min(getHeight(), Math.abs(getArcHeight())) / 2.0; |
| // Check which corner point is in and do circular containment |
| // test - otherwise simple acceptance |
| if (x >= (rrx0 += aw) && x < (rrx0 = rrx1 - aw)) { |
| return true; |
| } |
| if (y >= (rry0 += ah) && y < (rry0 = rry1 - ah)) { |
| return true; |
| } |
| x = (x - rrx0) / aw; |
| y = (y - rry0) / ah; |
| return (x * x + y * y <= 1.0); |
| } |
| |
| private int classify(double coord, double left, double right, |
| double arcsize) |
| { |
| if (coord < left) { |
| return 0; |
| } else if (coord < left + arcsize) { |
| return 1; |
| } else if (coord < right - arcsize) { |
| return 2; |
| } else if (coord < right) { |
| return 3; |
| } else { |
| return 4; |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public boolean intersects(double x, double y, double w, double h) { |
| if (isEmpty() || w <= 0 || h <= 0) { |
| return false; |
| } |
| double rrx0 = getX(); |
| double rry0 = getY(); |
| double rrx1 = rrx0 + getWidth(); |
| double rry1 = rry0 + getHeight(); |
| // Check for trivial rejection - bounding rectangles do not intersect |
| if (x + w <= rrx0 || x >= rrx1 || y + h <= rry0 || y >= rry1) { |
| return false; |
| } |
| double aw = Math.min(getWidth(), Math.abs(getArcWidth())) / 2.0; |
| double ah = Math.min(getHeight(), Math.abs(getArcHeight())) / 2.0; |
| int x0class = classify(x, rrx0, rrx1, aw); |
| int x1class = classify(x + w, rrx0, rrx1, aw); |
| int y0class = classify(y, rry0, rry1, ah); |
| int y1class = classify(y + h, rry0, rry1, ah); |
| // Trivially accept if any point is inside inner rectangle |
| if (x0class == 2 || x1class == 2 || y0class == 2 || y1class == 2) { |
| return true; |
| } |
| // Trivially accept if either edge spans inner rectangle |
| if ((x0class < 2 && x1class > 2) || (y0class < 2 && y1class > 2)) { |
| return true; |
| } |
| // Since neither edge spans the center, then one of the corners |
| // must be in one of the rounded edges. We detect this case if |
| // a [xy]0class is 3 or a [xy]1class is 1. One of those two cases |
| // must be true for each direction. |
| // We now find a "nearest point" to test for being inside a rounded |
| // corner. |
| x = (x1class == 1) ? (x = x + w - (rrx0 + aw)) : (x = x - (rrx1 - aw)); |
| y = (y1class == 1) ? (y = y + h - (rry0 + ah)) : (y = y - (rry1 - ah)); |
| x = x / aw; |
| y = y / ah; |
| return (x * x + y * y <= 1.0); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @since 1.2 |
| */ |
| public boolean contains(double x, double y, double w, double h) { |
| if (isEmpty() || w <= 0 || h <= 0) { |
| return false; |
| } |
| return (contains(x, y) && |
| contains(x + w, y) && |
| contains(x, y + h) && |
| contains(x + w, y + h)); |
| } |
| |
| /** |
| * Returns an iteration object that defines the boundary of this |
| * <code>RoundRectangle2D</code>. |
| * The iterator for this class is multi-threaded safe, which means |
| * that this <code>RoundRectangle2D</code> class guarantees that |
| * modifications to the geometry of this <code>RoundRectangle2D</code> |
| * object do not affect any iterations of that geometry that |
| * are already in process. |
| * @param at an optional <code>AffineTransform</code> to be applied to |
| * the coordinates as they are returned in the iteration, or |
| * <code>null</code> if untransformed coordinates are desired |
| * @return the <code>PathIterator</code> object that returns the |
| * geometry of the outline of this |
| * <code>RoundRectangle2D</code>, one segment at a time. |
| * @since 1.2 |
| */ |
| public PathIterator getPathIterator(AffineTransform at) { |
| return new RoundRectIterator(this, at); |
| } |
| |
| /** |
| * Returns the hashcode for this <code>RoundRectangle2D</code>. |
| * @return the hashcode for this <code>RoundRectangle2D</code>. |
| * @since 1.6 |
| */ |
| public int hashCode() { |
| long bits = java.lang.Double.doubleToLongBits(getX()); |
| bits += java.lang.Double.doubleToLongBits(getY()) * 37; |
| bits += java.lang.Double.doubleToLongBits(getWidth()) * 43; |
| bits += java.lang.Double.doubleToLongBits(getHeight()) * 47; |
| bits += java.lang.Double.doubleToLongBits(getArcWidth()) * 53; |
| bits += java.lang.Double.doubleToLongBits(getArcHeight()) * 59; |
| return (((int) bits) ^ ((int) (bits >> 32))); |
| } |
| |
| /** |
| * Determines whether or not the specified <code>Object</code> is |
| * equal to this <code>RoundRectangle2D</code>. The specified |
| * <code>Object</code> is equal to this <code>RoundRectangle2D</code> |
| * if it is an instance of <code>RoundRectangle2D</code> and if its |
| * location, size, and corner arc dimensions are the same as this |
| * <code>RoundRectangle2D</code>. |
| * @param obj an <code>Object</code> to be compared with this |
| * <code>RoundRectangle2D</code>. |
| * @return <code>true</code> if <code>obj</code> is an instance |
| * of <code>RoundRectangle2D</code> and has the same values; |
| * <code>false</code> otherwise. |
| * @since 1.6 |
| */ |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| if (obj instanceof RoundRectangle2D) { |
| RoundRectangle2D rr2d = (RoundRectangle2D) obj; |
| return ((getX() == rr2d.getX()) && |
| (getY() == rr2d.getY()) && |
| (getWidth() == rr2d.getWidth()) && |
| (getHeight() == rr2d.getHeight()) && |
| (getArcWidth() == rr2d.getArcWidth()) && |
| (getArcHeight() == rr2d.getArcHeight())); |
| } |
| return false; |
| } |
| } |
