textshell.java

一个可视化编辑器的基础结构

package org.goshawk.workflow.GUI.ShapeShell;

import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.PopupMenu;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.TextField;
import java.awt.font.FontRenderContext;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.util.Map;

import org.goshawk.workflow.DoMain.WorkFlowEntity;
import org.goshawk.workflow.GUI.Action.TextShellAction;
import org.goshawk.workflow.GUI.Display.EditorFrame;

public class TextShell extends ContentShapeShell
{

	private int height = 20;
	
	private int width = 90;
	
	private Rectangle rect = null;
	
	private String content = null;
	
	private WorkFlowEntity workStep = new WorkFlowEntity();

	public TextShell()
	{
		rect = new Rectangle(30,30,width,height);
	}
	
	public TextShell(Rectangle rect,String content)
	{
		this.rect = rect;
		height = rect.height;
		width = rect.width;
		this.content = content;
	}
	
	public TextShell(int x, int y, int width, int height,String content)
	{
		rect = new Rectangle(x,y,width,height);
		this.height = height;
		this.width = width;
		this.content = content;
		//editShape();
	}

	public Rectangle getRect()
	{
		return rect;
	}

	public void setRect(Rectangle rect)
	{
		this.rect = rect;
	}

	public Shape getShape()
	{
		return rect;
	}

	public void setShape(Shape shape) throws ShapeShellException
	{
		if(shape==null)
		{
			this.rect = null;
			return ;
		}
		if(!(shape instanceof Rectangle))
			throw new ShapeShellException("输入参数类型必须是java.awt.Rectangle");
		this.rect = (Rectangle)shape;
	}
	
	public int getHeight()
	{
		return (int)rect.getHeight();
	}

	public void setHeight(int height)
	{
		rect.setFrame(rect.x,rect.y,rect.width,(double)height);
		
	}

	public int getWidth()
	{
		return (int)rect.getWidth();
	}

	public void setWidth(int width)
	{
		rect.setFrame(rect.x,rect.y,(double)width,rect.height);
	}

	public int getX()
	{
		return (int)rect.x;
	}

	public void setX(int x)
	{
		rect.setFrame((double)x,rect.y,rect.width,rect.height);
	}

	public int getY()
	{
		return (int)rect.y;
	}

	public void setY(int y)
	{
		rect.setFrame(rect.x,(double)y,rect.width,rect.height);
	}
	
	public int getCenterX()
	{
		return (int)rect.getCenterX();
	}

	public int getCenterY()
	{
		return (int)rect.getCenterY();
	}

	public void paint(Graphics g)
	{
		Graphics2D g2 = (Graphics2D)g;
		Font font = Font.decode(content);
		FontRenderContext render = new FontRenderContext(new AffineTransform(),false,false );
		Rectangle2D stringRect = font.getStringBounds(content,render); 
		g2.drawString(content,(float) (this.getX()+(this.getWidth()-stringRect.getWidth())/2),(float) (this.getY()+stringRect.getHeight()));
		g2.draw(rect);
		//editShape();
	}

	public PopupMenu getPopupMenu()
	{
		return null;
	}

	public void setPopupMenu(PopupMenu menu)
	{
		System.out.println("这个方法是无效的");
	}

	public boolean contains(int x, int y)
	{
		return this.rect.contains(x,y);
	}

	public Object clone()
	{
		return new RectangleShell(rect.x,rect.y,rect.width,rect.height);
	}

	public WorkFlowEntity getWorkStep()
	{
		return workStep;
	}

	public void setWorkStep(WorkFlowEntity workStep)
	{
		this.workStep = workStep;
	}

	public void editShape(int mousex,int mousey)
	{
		if(rect.contains(mousex,mousey))
		{
			TextField text = new TextField(content);
			text.addFocusListener(new TextShellAction(this));
			EditorFrame.getCanvas().removeAll();
			EditorFrame.getCanvas().add(text);
			
			EditorFrame.getInstance().show();
			text.setBounds(rect.x+1,rect.y+1,rect.width-2,rect.height-2);
		}
	}

	public String getContent()
	{
		return content;
	}

	public void setContent(String content)
	{
		this.content = content;
	}

	public void addOtherShape(ShapeShell shape)
	{
	}

	public Map getOtherShapes()
	{
		return null;
	}

	public Map setOtherShapes(Map shapes)
	{
		return null;
	}

	public ShapeShell getOtherShape(String id)
	{
		return null;
	}

	public ShapeShell removeOtherShape(String id)
	{
		return null;
	}
	
}