shape.java

java版本的flash文件（swf）播放器

/****************************************************************
 * Copyright (c) 2001, David N. Main, All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the 
 * following conditions are met:
 *
 * 1. Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the following 
 * disclaimer. 
 * 
 * 2. Redistributions in binary form must reproduce the above 
 * copyright notice, this list of conditions and the following 
 * disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * 3. The name of the author may not be used to endorse or 
 * promote products derived from this software without specific 
 * prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
 * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ****************************************************************/
package com.anotherbigidea.flash.movie;

import java.io.*;
import java.util.*;
import com.anotherbigidea.flash.interfaces.*;
import com.anotherbigidea.flash.writers.*;
import com.anotherbigidea.flash.readers.*;
import com.anotherbigidea.flash.structs.*;
import com.anotherbigidea.flash.SWFConstants;

/**
 * A Shape Symbol
 */
public class Shape extends Symbol
{
    public abstract static class Element {}
    
    public abstract static class Style extends Shape.Element 
    {
    }
    
    public abstract static class FillStyle extends Shape.Style
    {
    }
    
    public static class ColorFill extends Shape.FillStyle
    {
        protected Color color;
        
        /**
         * @return may be Color or AlphaColor
         */
        public Color getColor() { return color; }
        public void setColor( Color color ) { this.color = color; }
        
        public ColorFill( Color color )
        {
            this.color = color;
        }
    }
    
    public static class ImageFill extends Shape.FillStyle
    {
        protected Symbol image;
        protected Transform matrix;
        protected boolean clipped;
        
        public Symbol getImage()        { return image; }
        public Transform getTransform() { return matrix; }
        public boolean isClipped()      { return clipped; }
        
        public void setImage( Symbol image ) { this.image = image; }
        public void setTransform( Transform matrix ) { this.matrix = matrix; }
        public void setClipped( boolean isClipped ) { clipped = isClipped; }
        
        public ImageFill( Symbol image, Transform matrix, boolean isClipped )
        {
            this.image   = image;
            this.matrix  = matrix;
            this.clipped = isClipped;
        }
    }
    
    public static class GradientFill extends Shape.FillStyle
    {
        protected Color[] colors;
        protected int[]   ratios;
        protected Transform matrix;
        protected boolean radial;
        
        public Color[]   getColors()    { return colors; }
        public Transform getTransform() { return matrix; }
        public int[]     getRatios()    { return ratios; }
        public boolean   isRadial()     { return radial; }
        
        public void setColors( Color[] colors ) { this.colors = colors; }
        public void setRatios( int[] ratios ) { this.ratios = ratios; }
        public void setTransform( Transform matrix ) { this.matrix = matrix; }
        public void setRadial( boolean isRadial ) { this.radial = isRadial; }
        
        public GradientFill( Color[] colors, int[] ratios, 
                             Transform matrix, boolean isRadial )
        {
            this.colors = colors;
            this.matrix = matrix;
            this.radial = isRadial;
            this.ratios = ratios;
        }
    }
    
    public static class LineStyle extends Shape.Style
    {
        protected double width;
        protected Color  color;
        
        public double getWidth() { return width; }
        public Color  getColor() { return color; }
        
        public void setWidth( double width ) { this.width = width; }
        public void setColor( Color color ) { this.color = color; }
        
        public LineStyle( double width, Color color )
        {
            this.width = width;
            this.color = color;
        }
    }
    
    public abstract static class SetStyle extends Shape.Element 
    {
        protected int index;
        
        public int getStyleIndex() { return index; }
        public void setStyleIndex( int index ) { this.index = index; }
        
        protected SetStyle( int index )
        {
            this.index = index;
        }
    }
    
    public abstract static class SetFillStyle extends Shape.SetStyle 
    {
        protected SetFillStyle( int index )
        {
            super( index );
        }
    }
    
    public static class SetLeftFillStyle extends Shape.SetFillStyle 
    {
        public SetLeftFillStyle( int index )
        {
            super( index );
        }
    }
    
    public static class SetRightFillStyle extends Shape.SetFillStyle 
    {
        public SetRightFillStyle( int index )
        {
            super( index );
        }
    }
    
    public static class SetLineStyle extends Shape.SetStyle 
    {
        public SetLineStyle( int index )
        {
            super( index );
        }
    }
    
    public abstract static class Vector extends Shape.Element 
    {
        protected double x, y;
        
        public double getX() { return x; }
        public double getY() { return y; }
        
        public void setX( double x ) { this.x = x; }
        public void setY( double y ) { this.y = y; }
        
        protected Vector( double x, double y )
        {
            this.x = x;
            this.y = y;
        }
    }
    
    public static class Move extends Shape.Vector 
    {
        public Move( double x, double y )
        {
            super( x, y );
        }
    }
    
    public static class Line extends Shape.Vector 
    {
        public Line( double x, double y )
        {
            super( x, y );
        }
    }

    public static class Curve extends Shape.Vector 
    {
        protected double cx, cy;
        
        public double getControlX() { return cx; }
        public double getControlY() { return cy; }
        
        public void setControlX( double cx ) { this.cx = cx; }
        public void setControlY( double cy ) { this.cy = cy; }
        
        public Curve( double x, double y, double controlX, double controlY )
        {
            super( x, y );
            this.cx = controlX;
            this.cy = controlY;
        }        
    }

    protected ArrayList elements = new ArrayList();
    protected double minX, maxX, minY, maxY;  //bounding rectangle
    protected boolean hasAlpha = false;
    protected double maxLineWidth;
    protected double currx, curry;
    
    public Shape() {}
    
    /**
     * Get the bounding rectangle as a double[4] - (min-X,min-Y,max-X,max-Y)
     */
    public double[] getBoundingRectangle()
    {
        return new double[] { minX, minY, maxX, maxY };
    }
    
    /**
     * Set the bounding rectangle. This will be automatically calculated
     * as the geometry vectors are defined and this rectangle will be enlarged
     * if it does not contain all the vectors.
     */
    public void setBoundingRectangle( double minx, double minY, 
                                      double maxX, double maxY )
    {
        this.minX = minX;
        this.minY = minY;
        this.maxX = maxX;
        this.maxY = maxY;
    }
    
    /**
     * Access the list of shape elements
     * Each object is a subclass of Shape.Element
     */
    public ArrayList getShapeElements()
    {
        return elements;
    }
    
    /**
     * Define a line style
     * @param color if null then black is assumed
     */
    public void defineLineStyle( double width, Color color )
    {
        if( color == null ) color = new Color(0,0,0);
        
        LineStyle style = new LineStyle( width, color );

        if( maxLineWidth < width ) maxLineWidth = width;

        if( color instanceof AlphaColor ) hasAlpha = true;
        
        elements.add( style );
    }
    
    /**
     * Define a color fill
     * @param color if null then white is assumed
     */
    public void defineFillStyle( Color color )
    {