scribbletool.java

基于JAVA实现的网络电话源码

/*
 * ScribbleTool.java - part of MutliTalk
 *
 * Created on 29 aprile 2006, 18.29
 *
 * 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; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * 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; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * Thanks to Arash Partow that is so generous to make his code so simple in his Scribble Application:
 * http://www.partow.net/projects/jpaintbrush/index.html
 */

package _main.windowElement.drawTools;

import _main.ClientTCP;
import _main.windowElement.DrawPanel;
import java.awt.event.MouseEvent;

/**
 *
 * @author paolomind
 */
public abstract class ScribbleTool extends AbstractTool {
    
    private int mousex;
    private int mousey;
    private int prevx;
    private int prevy;
    private int Orx;
    private int Ory;
    protected int drawY;
    protected int drawX;
    protected int OrHeight;
    protected int OrWidth;
    
    /** Creates a new instance of ScribbleTool */
    protected ScribbleTool(DrawPanel p) {
        super(p);
    }
    protected ScribbleTool(ClientTCP c, DrawPanel p) {
        super(c,p);
    }
    
    protected void setGraphicalDefaults(MouseEvent e) {
        mousex   = e.getX();
        mousey   = e.getY();
        prevx    = e.getX();
        prevy    = e.getY();
        Orx      = e.getX();
        Ory      = e.getY();
        drawX    = e.getX();
        drawY    = e.getY();
        OrWidth  = 0;
        OrHeight = 0;
    }
    
    protected void updateXY(MouseEvent e) {
        mousex = e.getX();
        mousey = e.getY();
    }
    
    protected void setActualBoundry() {
       /*
         If the any of the current mouse coordinates
         are smaller than the origin coordinates, meaning
         if drag occured in a negative manner, where either
         the x-shift occured from right and/or y-shift occured
         from bottom to top.
        */
        if (mousex < Orx || mousey < Ory) {
            
          /*
            if the current mouse x coordinate is smaller
            than the origin x coordinate,
            equate the drawX to be the difference between
            the current width and the origin x coordinate.
           */
            if (mousex < Orx) {
                OrWidth = Orx - mousex;
                drawX   = Orx - OrWidth;
            }
            
            else {
                drawX    = Orx;
                OrWidth  = mousex - Orx;
                
            }
            
          /*
            if the current mouse y coordinate is smaller
            than the origin y coordinate,
            equate the drawY to be the difference between
            the current height and the origin y coordinate.
           */
            if (mousey < Ory) {
                OrHeight = Ory - mousey;
                drawY    = Ory - OrHeight;
            }
            
            else {
                drawY    = Ory;
                OrHeight = mousey - Ory;
            }
            
        }
        
       /*
         Else if drag was done in a positive manner meaning
         x-shift occured from left to right and or y-shift occured
         from top to bottom
        */
        else {
            drawX    = Orx;
            drawY    = Ory;
            OrWidth  = mousex - Orx;
            OrHeight = mousey - Ory;
        }
        
    }
}