jfisoscelestriangle.java

来自「用Java开发的、实现类似Visio功能的应用程序源码」· Java 代码 · 共 292 行

/**
 *    $Id:JFIsoscelesTriangle.java $
 *
 *    Copyright 2004 ~ 2005  JingFei International Cooperation LTD. All rights reserved. *
 */
package com.jfimagine.jfgraph.shape.polygon;

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.GeneralPath;

import com.jfimagine.jfgraph.shape.rectangle.AbstractRectangle;
import com.jfimagine.jfgraph.shape.base.Node;
import com.jfimagine.jfgraph.shape.base.Port;
import com.jfimagine.jfgraph.shape.base.AbstractObject;
import com.jfimagine.jfgraph.shape.base.ShapeConst;

import com.jfimagine.jfgraph.geom.JFPoint;
import com.jfimagine.jfgraph.geom.Rect;
import com.jfimagine.jfgraph.geom.IsoscelesTriangle;
 
 
 /**
 * JFIsoscelesTriangle class.  
 * A rectangle class used to represents an isosceles triangle
 *
 * @author     CookieMaker    
 *
 * @version $Revision: 1.00 $
 */  
 public class JFIsoscelesTriangle extends AbstractRectangle{

   /**
    *   A XML string tag represents a isosceles triangle.
    */
   public  static final String	 XML_ISOSCELESTRIANGLE		="JFIsoscelesTriangle";

   /**
    *   Constructor for isosceles triangle.
    */
   public JFIsoscelesTriangle(){
   	m_rect	=new IsoscelesTriangle();
   	setObjectType(ShapeConst.SHAPETYPE_ISOSCELESTRIANGLE);
   	setXMLTag(XML_ISOSCELESTRIANGLE);
   }	

   /**
    *   Constructor for isosceles triangle.
    *
    *   @param x  X coordiate.
    *
    *   @param y  Y coordiate.
    *
    *   @param w  Width of this isosceles triangle.
    *
    *   @param h  Height of this isosceles triangle.
    *
    */ 	
   public JFIsoscelesTriangle(double x, double y, double w, double h){
   	m_rect	=new IsoscelesTriangle();

   	setObjectType(ShapeConst.SHAPETYPE_ISOSCELESTRIANGLE);
   	setXMLTag(XML_ISOSCELESTRIANGLE);

	addNode(x,y);
	addNode(x+w,y+h);
	   	
   	finishDrawing();
   }
   
   
   /**
    *   Creates a new AbstractObject of the same class and with the same contents as this object.
    *   This method implements the method defined in AbstractObject.
    * 
    *   @return  A clone of this class.
    *
    */ 	
  protected AbstractObject cloneMe() throws CloneNotSupportedException{
  	return new JFIsoscelesTriangle();
  }


   /**
    *   Add a new node for current node list.
    *   here this method will always be called by DrawState class or any drawing class.
    * 
    *   @param x, y Coordinates of a new node.
    *
    */ 	
   public void addNode(double x, double y){
	super.addNode(x,y);
	
	if (m_nodeAdded>1){
   		//left-top point and right-bottom point:
   		JFPoint pnt1	=m_firstNode;
   		JFPoint	pnt2	=new JFPoint(x,y);
		    	
   		m_rect.setVertex(Rect.VERTEXTYPE_LEFTTOP,pnt1.getX(),pnt1.getY());
   		m_rect.setVertex(Rect.VERTEXTYPE_RIGHTTOP,x,pnt1.getY());
   		m_rect.setVertex(Rect.VERTEXTYPE_LEFTBOTTOM,pnt1.getX(),y);
   		m_rect.setVertex(Rect.VERTEXTYPE_RIGHTBOTTOM,x,y);

   		initNodes();
   	}
   }  

   /**
    *   Move/adjust a node of current object.
    * 
    *   @param  node Currently moving node.
    *
    *   @param  x, y Moving offsets.
    *
    *   @param g current drawing canvas.
    *
    */ 	
   public void  moveNode(Node node, double x, double y,Graphics g){
   	super.moveNode(node,x,y,g);

	if (node!=null){
		if (node.getXOffset()!=x || node.getYOffset()!=y){
			//move node and draw a new dragging shape.
			int vertexType	=getVertexTypeByNode(node);
   			m_rect.moveVertex(vertexType,x,y,Rect.VERTEXMOVETYPE_RECTANGLE);

   			//init shape nodes.
			initNodes();
		   		
   			//draw current moving node and its relational lines
   			draw(g,true);
   		}
	}
   }
   
   /**
    *   Draw current object on graphic canvas.
    * 
    *   @param  g  A graphic canvas.	
    *   @param  isXorMode If is in xor mode now.
    *
    */ 	
   public void  draw(Graphics g,boolean isXorMode){
   	if (g==null)
   		return;

   	//if user hide this shape, we'll draw an 'invisible' bounds here.	
   	if (isInvisible()){
   		drawInvisibleBounds(g,isXorMode);
   		return;
   	}	

        if (!isXorMode)
		setTransparencyComposite(g);

  	double zoom	=getZoomScale();
   	GeneralPath path= new GeneralPath(GeneralPath.WIND_EVEN_ODD); 
   	
   	IsoscelesTriangle triangle =(IsoscelesTriangle)m_rect;
  	JFPoint	top	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_TOP);
   	JFPoint left	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_LEFT);
   	JFPoint right	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_RIGHT);   	


   	path.moveTo((float)(top.getX()*zoom),(float)(top.getY()*zoom));
   	path.lineTo((float)(right.getX()*zoom),(float)(right.getY()*zoom));
   	path.lineTo((float)(left.getX()*zoom),(float)(left.getY()*zoom));
   	path.closePath();
                           
   	if (!isXorMode){
   		Rect rect	=getBounds();
   		rect.setValue(rect.getX() * zoom, rect.getY() * zoom, rect.getWidth() * zoom, rect.getHeight() * zoom);
   		m_fillFormat.draw(g,path,rect);
   		m_lineFormat.draw(g,path);
   	}else
   		((Graphics2D)g).draw(path);
   		

        if (!isXorMode)
		restoreTransparencyComposite(g);
   				
	if (!isXorMode){   	
   		drawPort(g);
   		drawLabel(g);
   	}
   }



   /**
    *   Init all ports of this diamond
    *   An object will always has its one or more stable ports and some customized ports,
    *   for dimond, it will has four stable ports as below,
    *   port1 at middle left,
    *   port2 at middle top,
    *   port3 at middle right,
    *   port4 at middle bottom,
    */ 	
   protected void initPorts(){

   	if (m_portList.size()==0){
   		try{
   			IsoscelesTriangle triangle =(IsoscelesTriangle)m_rect;

		
  			JFPoint	top	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_TOP);
   			JFPoint left	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_LEFT);
   			JFPoint right	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_RIGHT);   	

  			
   			Port port;
			
			//left
   			port 	=new Port();
   			port.setFirstPoint(top);
   			port.setSecondPoint(left);
   			port.setPortPoint(top.midPoint(left));
   			port.setParent(this);
   			m_portList.add(port);
   			
   			//right
   			port 	=new Port();
   			port.setFirstPoint(top);
   			port.setSecondPoint(right);
   			port.setPortPoint(top.midPoint(right));
   			port.setParent(this);
   			m_portList.add(port);

			//bottom
   			port 	=new Port();
   			port.setFirstPoint(left);
   			port.setSecondPoint(right);
   			port.setPortPoint(left.midPoint(right));
   			port.setParent(this);
   			m_portList.add(port);
   			
   		}catch(Exception e){
   		}  
   	    m_portList.setZoomScale(getZoomScale());	
	    
   	}
   }



   /**
    *   Start move a node.
    * 
    *   @param  node The node will be moved.
    *
    */ 	
   public void  startMoveNode(Node node){
   	m_originalRect	=new IsoscelesTriangle((IsoscelesTriangle)m_rect);
   	startMoveLabel();
   }


   /**
    *   finish move/adjust a node of current object.
    * 
    *   @param  node Currently moving node.
    *
    *   @param  x, y Moving offsets.
    *
    *   @param g current drawing canvas.
    *
    */ 	
   public void  finishMoveNode(Node node, double x, double y,Graphics g){
	finishMoveLabel();
		
	IsoscelesTriangle originalTriangle	=(IsoscelesTriangle)m_originalRect;
	IsoscelesTriangle triangle		=(IsoscelesTriangle)m_rect;


  	JFPoint	originalTop	=originalTriangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_TOP);
   	JFPoint originalLeft	=originalTriangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_LEFT);
   	JFPoint originalRight	=originalTriangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_RIGHT);   	


  	JFPoint	top	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_TOP);
   	JFPoint left	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_LEFT);
   	JFPoint right	=triangle.getTriangleVertex(IsoscelesTriangle.TRIANGLEVERTEX_RIGHT);   	


	m_portList.movePort(originalTop,originalLeft,top,left);
	m_portList.movePort(originalTop,originalRight,top,right);
	m_portList.movePort(originalLeft,originalRight,left,right);

   }

   
}