using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Popup.Controls
{
    partial class Frm_Popup : System.Windows.Forms.Form
    {

        #region 变量
        private InformStyle InfoStyle = InformStyle.Vanish;//定义变量为隐藏
        private System.Drawing.Rectangle Rect;//定义一个存储矩形框的数组
        private bool isMouseMove = false;//是否在窗体中移动
        static private Frm_Popup F_Popup = new Frm_Popup();//实例化当前窗体
        #endregion

        #region 内置属性
        /// <summary>
        /// 定义一个任务通知器的枚举值
        /// </summary>//InformStyle
        protected enum InformStyle
        {
            /// <summary>
            /// 隐藏
            /// </summary>
            Vanish = 0,
            /// <summary>
            /// 显视
            /// </summary>
            Display = 1,
            /// <summary>
            /// 显视中
            /// </summary>
            Displaying = 2,
            /// <summary>
            /// 隐藏中
            /// </summary>
            Vanishing = 3
        }        
        
        /// <summary>
        /// 获取或设置当前的操作状态
        /// </summary>
        protected InformStyle InfoState
        {
            get { return this.InfoStyle; }
            set { this.InfoStyle = value; }
        }
        #endregion

        public Frm_Popup()
  {
   this.InitializeComponent();
   this.timer1.Stop();//停止计时器
   //初始化工作区大小
   System.Drawing.Rectangle rect = System.Windows.Forms.Screen.GetWorkingArea(this);
   this.Rect = new System.Drawing.Rectangle( rect.Right - this.Width - 1, rect.Bottom - this.Height - 1, this.Width, this.Height );
  }

        #region 返回当前窗体的实例化
        /// <summary>
        /// 返回此对象的实例
        /// </summary>
        /// <returns></returns>
        static public Frm_Popup Instance()
        {
            return F_Popup;
        }
        #endregion

        #region 声明WinAPI
        /// <summary>
        /// 显示窗体
        /// </summary>
        /// <param name="hWnd"></param>
        /// <param name="nCmdShow"></param>
        /// <returns></returns>
        [DllImport("user32.dll")]
        private static extern Boolean ShowWindow(IntPtr hWnd, Int32 nCmdShow);
        #endregion

        #region 方法
        /// <summary>
        /// 显示窗体
        /// </summary>
        public void Show()
        {
            switch (this.InfoState)
            {
                case InformStyle.Vanish://窗体隐藏
                    this.InfoState = InformStyle.Displaying;//设置窗体的操作状态为显示中
                    this.SetBounds(Rect.X, Rect.Y + Rect.Height, Rect.Width, 0);//显示Popup窗体，并放置到屏幕的底部
                    ShowWindow(this.Handle, 4);//显示窗体
                    this.timer1.Interval = 100;//设置时间间隔为100
                    this.timer1.Start();//启动计时器
                    break;
                case InformStyle.Display://窗体显示
                    this.timer1.Stop();//停止计时器
                    this.timer1.Interval = 5000;//设置时间间隔为5000
                    this.timer1.Start();//启动记时器
                    break;
            }
        }
        #endregion

        #region 事件
        private void timer1_Tick(object sender, System.EventArgs e)
        {
            switch (this.InfoState)
            {
                case InformStyle.Display://显示当前窗体
                    this.timer1.Stop();//停止计时器
                    this.timer1.Interval = 100;//设置时间间隔为100
                    if (!(this.isMouseMove))//如果鼠标不在窗体中移动
                        this.InfoState = InformStyle.Vanishing;//设置当前窗体的操作状态为隐藏中
                    this.timer1.Start();//启动计时器
                    break;
                case InformStyle.Displaying://当前窗体显示中
                    if (this.Height <= this.Rect.Height - 12)//当窗体没有完全显示时
                        this.SetBounds(Rect.X, this.Top - 12, Rect.Width, this.Height + 12);//使窗体不断上移
                    else
                    {
                        this.timer1.Stop();//停止计时器
                        this.SetBounds(Rect.X, Rect.Y, Rect.Width, Rect.Height);//设置当前窗体的边界
                        this.InfoState = InformStyle.Display;//设置当前窗体的操作状态为显示
                        this.timer1.Interval = 5000;//设置时间间隔为5000
                        this.timer1.Start();//启动计时器
                    }
                    break;
                case InformStyle.Vanishing://隐藏当前窗体
                    if (this.isMouseMove)//如果鼠标在窗体中移动
                        this.InfoState = InformStyle.Displaying;//设置窗体的操作状态为显示
                    else
                    {
                        if (this.Top <= this.Rect.Bottom - 12)//如果窗体没有完全隐藏
                            this.SetBounds(Rect.X, this.Top + 12, Rect.Width, this.Height - 12);//使窗体不断下移
                        else
                        {
                            this.Hide();//隐藏当前窗体
                            this.InfoState = InformStyle.Vanish;//设置窗体的操作状态为隐藏
                        }
                    }
                    break;
            }
        }

        private void Frm_Popup_MouseMove(object sender, MouseEventArgs e)
        {
            this.isMouseMove = true;//当鼠标移入时，设为true
        }

        private void Frm_Popup_MouseLeave(object sender, EventArgs e)
        {
            this.isMouseMove = false;//当鼠标移出时，设为false
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            if (this.InfoState != InformStyle.Vanish)//如果窗体的状态不是隐藏
            {
                this.timer1.Stop();//停止计时器
                this.InfoState = InformStyle.Vanish;//设置窗体的操作状态为隐藏
                base.Hide();//隐藏当前窗体
            }
        }

        private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {
            pictureBox1.Image = null;
            pictureBox1.Image = Image.FromFile("Close1.bmp");
        }

        private void pictureBox1_MouseLeave(object sender, EventArgs e)
        {
            pictureBox1.Image = null;
            pictureBox1.Image = Image.FromFile("Close2.bmp");
        }
        #endregion
    }
}