/**

  * Back 2 Browser Bytecode Translator Copyright (C) 2012 Jaroslav Tulach

  * <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify it under

  * the terms of the GNU General Public License as published by the Free Software

  * Foundation, version 2 of the License.

  *

  * This program 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 for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * this program. Look for COPYING file in the top folder. If not, see

  * http://opensource.org/licenses/GPL-2.0.

  */

 package net.java.html.canvas;

 import java.util.HashMap;

 import java.util.Objects;

 /**

  * Style for Stroke and Fill of GraphicsContext. Styles are created using

  * GraphicsContexts factory methods. If the Implementation supports it, native

  * Styles will be cached for performance reasons. This happens the first time

  * the Style is actually used.

  *

  * @author antonepple

  */

 public class Style {

     Object cached;

     private int cacheHash;

     Style() {

     }

     void cache(Object toCache) {

         cacheHash = hashCode();

         this.cached = toCache;

     }

     private boolean isCached() {

         return cacheHash == hashCode();

     }

     Object getCached() {

         return isCached() ? cached : null;

     }

     public static final class Pattern extends Style {

         private Image imageResource;

         private String repeat;

         public Pattern(Image imageResource, String repeat) {

             this.imageResource = imageResource;

             this.repeat = repeat;

         }

         public Image getImageResource() {

             return imageResource;

         }

         public void setImageResource(Image imageResource) {

             this.imageResource = imageResource;

         }

         public String getRepeat() {

             return repeat;

         }

         public void setRepeat(String repeat) {

             this.repeat = repeat;

         }

     }

     public static final class Color extends Style {

         private String web;

         /**

          * Creates an RGB color specified with an HTML or CSS attribute string.

          *

          * @param webColor Colordefined as

          */

         public Color(String webColor) {

             this.web = webColor;

         }

         public String getAsString() {

             return web;

         }

     }

     public static class LinearGradient extends Style {

         private HashMap<Double, String> stops;

         private double x0, y0, x1, y1;

         LinearGradient(double x0, double y0, double x1, double y1) {

             this.x0 = x0;

             this.y0 = y0;

             this.x1 = x1;

             this.y1 = y1;

         }

         void addColorStop(double position, String color) {

             if (stops == null) {

                 stops = new HashMap<>();

             }

             stops.put(position, color);

         }

         public HashMap<Double, String> getStops() {

             return stops;

         }

         public void setStops(HashMap<Double, String> stops) {

             this.stops = stops;

         }

         public double getX0() {

             return x0;

         }

         public void setX0(double x0) {

             this.x0 = x0;

         }

         public double getY0() {

             return y0;

         }

         public void setY0(double y0) {

             this.y0 = y0;

         }

         public double getX1() {

             return x1;

         }

         public void setX1(double x1) {

             this.x1 = x1;

         }

         public double getY1() {

             return y1;

         }

         public void setY1(double y1) {

             this.y1 = y1;

         }

         @Override

         public int hashCode() {

             int hash = 7;

             hash = 29 * hash + Objects.hashCode(this.stops);

             hash = 29 * hash + (int) (Double.doubleToLongBits(this.x0) ^ (Double.doubleToLongBits(this.x0) >>> 32));

             hash = 29 * hash + (int) (Double.doubleToLongBits(this.y0) ^ (Double.doubleToLongBits(this.y0) >>> 32));

             hash = 29 * hash + (int) (Double.doubleToLongBits(this.x1) ^ (Double.doubleToLongBits(this.x1) >>> 32));

             hash = 29 * hash + (int) (Double.doubleToLongBits(this.y1) ^ (Double.doubleToLongBits(this.y1) >>> 32));

             return hash;

         }

         @Override

         public boolean equals(Object obj) {

             if (obj == null) {

                 return false;

             }

             if (getClass() != obj.getClass()) {

                 return false;

             }

             final LinearGradient other = (LinearGradient) obj;

             if (!Objects.equals(this.stops, other.stops)) {

                 return false;

             }

             if (Double.doubleToLongBits(this.x0) != Double.doubleToLongBits(other.x0)) {

                 return false;

             }

             if (Double.doubleToLongBits(this.y0) != Double.doubleToLongBits(other.y0)) {

                 return false;

             }

             if (Double.doubleToLongBits(this.x1) != Double.doubleToLongBits(other.x1)) {

                 return false;

             }

             if (Double.doubleToLongBits(this.y1) != Double.doubleToLongBits(other.y1)) {

                 return false;

             }

             return true;

         }

     }

     public static final class RadialGradient extends LinearGradient {

         private double r0, r1;

         RadialGradient(double x0, double y0, double r0, double x1, double y1, double r1) {

             super(x0, y0, x1, y1);

             this.r0 = r0;

             this.r1 = r1;

         }

         public double getR0() {

             return r0;

         }

         public void setR0(double r0) {

             this.r0 = r0;

         }

         public double getR1() {

             return r1;

         }

         public void setR1(double r1) {

             this.r1 = r1;

         }

         @Override

         public int hashCode() {

             int hash = super.hashCode();

             hash = 17 * hash + (int) (Double.doubleToLongBits(this.r0) ^ (Double.doubleToLongBits(this.r0) >>> 32));

             hash = 17 * hash + (int) (Double.doubleToLongBits(this.r1) ^ (Double.doubleToLongBits(this.r1) >>> 32));

             return hash;

         }

         @Override

         public boolean equals(Object obj) {

             if (obj == null) {

                 return false;

             }

             if (getClass() != obj.getClass()) {

                 return false;

             }

             if (!super.equals(obj)) {

                 return false;

             }

             final RadialGradient other = (RadialGradient) obj;

             if (Double.doubleToLongBits(this.r0) != Double.doubleToLongBits(other.r0)) {

                 return false;

             }

             if (Double.doubleToLongBits(this.r1) != Double.doubleToLongBits(other.r1)) {

                 return false;

             }

             if ((this.getCached() == null) != (other.getCached() == null)) {

                 return false;

             }

             return true;

         }

     }

 }