drawings.java

用JAVA实现。一个简单的画图软件。可以进行简单的操作。还可以实现简单的图形绘画。如三角形等。

package DrawPlat;

//定义画图的基本图形单元

import java.io.*;
import java.awt.*;



 class drawings implements Serializable{


	int x1,y1,x2,y2;//定义坐标属性
	int R,G,B; 		//定义色彩属性
	float stroke;	//定义线条粗细属性
	int type;		//定义字体属性
	String s1;
	String s2;		//定义字体风格属性
	
	 void  judge(int x1,int  y1,int  x2,int y2) {  //定义判断是否在画图区域
		if( x1 <= 0 ) x1 = 0;
		if( x2 <= 0 ) x2 = 0;
		if( y1 <= 0 ) y1 = 0;
		if( y2 <= 0 ) y2 = 0;
		
		
	}
	
	void draw(Graphics2D g2d) {}; //定义绘图函数
	
}


 class Line extends drawings {

	@Override
	void draw(Graphics2D g2d) {
		
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke,BasicStroke.CAP_ROUND,
				BasicStroke.JOIN_BEVEL));
		judge(x1, y1, x2, y2);
		g2d.drawLine(x1, y1, x2, y2);
	}

	
	 
 }//Line
 
 
 class Rect extends drawings {
	 @Override
		void draw(Graphics2D g2d) {
	
			g2d.setPaint(new Color(R,G,B));
			g2d.setStroke(new BasicStroke(stroke));
			judge(x1, y1, x2, y2);
			g2d.drawRect(Math.min(x1, x2), Math.min(y1, y2),
					Math.abs(x1-x2), Math.abs(y1-y2));
		}
	 
	 
 }//Rect


 class fillRect extends drawings {

	@Override
	void draw(Graphics2D g2d) {
		
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.fillRect(Math.min(x1, x2), Math.min(y1, y2),
				Math.abs(x1-x2), Math.abs(y1-y2));
	}
	 
 }//fillRect
 
 
 class Oval extends drawings {

	@Override
	void draw(Graphics2D g2d) {
	
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.drawOval(Math.min(x1, x2), Math.min(y1, y2),
				Math.abs(x1-x2), Math.abs(y1-y2));
	}
	 
 } //Oval
 
 
 class fillOval extends drawings {

	@Override
	void draw(Graphics2D g2d) {
		
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.fillOval(Math.min(x1, x2), Math.min(y1, y2),
				Math.abs(x1-x2), Math.abs(y1-y2));
	}
	 
 }//fillOval


class Circle extends drawings {

	@Override
	void draw(Graphics2D g2d) {
	
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.drawOval(Math.min(x1, x2), Math.min(y1,y2),
				Math.max(Math.abs(x1-x2), Math.abs(y1-y2)),
				Math.max(Math.abs(x1-x2), Math.abs(y1-y2)));
	}
	
	
}//Circle


class fillCircle extends drawings {

	@Override
	void draw(Graphics2D g2d) {
		
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.fillOval(Math.min(x1, x2), Math.min(y1,y2),
				Math.max(Math.abs(x1-x2), Math.abs(y1-y2)),
				Math.max(Math.abs(x1-x2), Math.abs(y1-y2)));
	}
	
}//fillCircle


class RoundRect extends drawings {

	@Override
	void draw(Graphics2D g2d) {
		
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.drawRoundRect(Math.min(x1, x2), Math.min(y1, y2),
				Math.abs(x1-x2), Math.abs(y1-y2), 50, 35);
	}
	
} //RoundRect


class fillRoundRect extends drawings {

	@Override
	void draw(Graphics2D g2d) {
	
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke));
		judge(x1, y1, x2, y2);
		g2d.fillRoundRect(Math.min(x1, x2), Math.min(y1, y2),
				Math.abs(x1-x2), Math.abs(y1-y2), 50, 35);
	}
	
	
} //fillRoundRect

 
 class Pencil extends drawings {

	@Override
	void draw(Graphics2D g2d) {
	
		g2d.setPaint(new Color(R,G,B));
		g2d.setStroke(new BasicStroke(stroke,BasicStroke.CAP_ROUND,
				BasicStroke.JOIN_BEVEL));
		judge(x1, y1, x2, y2);
		g2d.drawLine(x1, y1, x2, y2);
	}
	 
 }//Pencil
 
 
 class Rubber extends drawings {

		@Override
		void draw(Graphics2D g2d) {
			// TODO Auto-generated method stub
			g2d.setPaint(new Color(255,255,255));
			g2d.setStroke(new BasicStroke(stroke+4f,BasicStroke.CAP_ROUND,
					BasicStroke.JOIN_BEVEL));
			judge(x1, y1, x2, y2);
			g2d.drawLine(x1, y1, x2, y2);
		}
		 
	 } //Rubber