Design Pattern【4】原型模式

参考http://www.cnblogs.com/QinBaoBei/archive/2010/05/22/1741661.html

在 ICloneable 中只公开了唯一的一个方法，也就是 Clone（），您可以通过实现这个接口来完成 . Net 中原型模式的使用。

例子：通过调节RGB的值来显示颜色的变化

 

namespace WindowsFormsApplication5
{
    public class ConColor:ICloneable
    {
        private int r, g, b;
        public int R
        {
            get { return this.r; }
            set { this.r = value; }
        }
        public int G
        {
            get { return this.g; }
            set { this.g = value; }
        }
        public int B
        {
            get { return this.b; }
            set { this.b = value; }
        }
        public ConColor(int r, int g, int b)
        {
            this.r = r;
            this.g = g;
            this.b = b;
        }
        public Object Clone()
        {
            return (Object)this.MemberwiseClone();
        }
    }
}

 

namespace WindowsFormsApplication5
{
    public partial class Form1 : Form
    {
        ConColor inicolor = new ConColor(0,0,0);//初始化一个ConColor对象
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            ConColor newcolor = (ConColor)inicolor.Clone();//浅复制初始化的对象
            draw(newcolor);
        }

        public void draw(ConColor c)
        {
            Color color=Color.FromArgb(c.R,c.G,c.B);
            panel1.BackColor = color;
        }
        private void trackBar1_Scroll(object sender, EventArgs e)
        {
            inicolor.R = trackBar1.Value;
        }

        private void trackBar2_Scroll(object sender, EventArgs e)
        {
            inicolor.G = trackBar2.Value;
        }

        private void trackBar3_Scroll(object sender, EventArgs e)
        {
            inicolor.B = trackBar3.Value;
        }
    }
}