combinationfilter.java

来自「Sony Ericsson手机上的Facebook客户端全套代码」· Java 代码 · 共 129 行

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   CombinationFilter.java

package se.southend.drops.pixelfilter;

import java.util.Vector;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

// Referenced classes of package se.southend.drops.pixelfilter:
//            Filter

public class CombinationFilter
    implements Filter
{

    public CombinationFilter()
    {
        filters = new Vector();
    }

    public void addFilter(Filter additionalFilter)
    {
        filters.addElement(additionalFilter);
        needsRender = true;
    }

    public void forceRender()
    {
        needsRender = true;
    }

    public void setImage(Image fromImage)
    {
        if(fromImage == null)
        {
            return;
        } else
        {
            int width = fromImage.getWidth();
            int height = fromImage.getHeight();
            int fromRGB[] = new int[width * height];
            fromImage.getRGB(fromRGB, 0, width, 0, 0, width, height);
            setRGB(fromRGB, width, height);
            return;
        }
    }

    public void setRGB(int fromRGB[], int width, int height)
    {
        this.fromRGB = fromRGB;
        srcWidth = width;
        srcHeight = height;
        this.width = width;
        this.height = height;
        rgb = new int[width * height];
        needsRender = true;
    }

    public Image getImage()
    {
        return Image.createRGBImage(getRGB(), getWidth(), getHeight(), true);
    }

    public int[] getRGB()
    {
        return rgb;
    }

    public int getWidth()
    {
        return width;
    }

    public int getHeight()
    {
        return height;
    }

    public void render()
    {
        if(!needsRender)
        {
            return;
        } else
        {
            rgb = applyFilters(fromRGB);
            needsRender = false;
            return;
        }
    }

    public void paintAt(Graphics graphics, int x, int y)
    {
        render();
        graphics.drawRGB(rgb, 0, width, x, y, width, height, true);
    }

    protected final int[] applyFilters(int src[])
    {
        rgb = src;
        width = srcWidth;
        height = srcHeight;
        for(int i = 0; i < filters.size(); i++)
        {
            Filter tempFilter = (Filter)filters.elementAt(i);
            tempFilter.setRGB(rgb, width, height);
            tempFilter.render();
            rgb = tempFilter.getRGB();
            width = tempFilter.getWidth();
            height = tempFilter.getHeight();
        }

        return rgb;
    }

    public static final int UNIT = 8;
    protected Vector filters;
    protected int fromRGB[];
    protected int rgb[];
    protected int width;
    protected int height;
    protected int srcWidth;
    protected int srcHeight;
    private boolean needsRender;
}