using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.IO;
using DevExpress.XtraEditors;

namespace ControlLib.com {
    /// <summary>
    /// 主界面模块按钮
    /// </summary>
    public partial class ModuleButton : Label {
        //鼠标移开的图片
        private Image m_imgUp = null;
        //鼠标进入的图片
        private Image m_imgOver = null;

        //鼠标移开的图片文件名
        private string m_strUp = string.Empty;
        //鼠标进入的图片文件名
        private string m_strOver = string.Empty;

        //用来接收鼠标事件的空容器
        private PictureBox pic = new PictureBox();

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="w">控件宽度</param>
        /// <param name="h">控件高度</param>
        public ModuleButton(int w, int h) {
            //设置双缓冲
            this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);

            this.Width = w;
            this.Height = h;

            this.ImageAlign = ContentAlignment.TopCenter;
            this.TextAlign = ContentAlignment.BottomCenter;

            this.BackColor = Color.White;

            pic.Width = 50;
            pic.Height = 50;

            pic.MouseEnter += new EventHandler(ImageButton_MouseEnter);
            pic.MouseLeave += new EventHandler(ImageButton_MouseLeave);

            pic.Top = 0;
            pic.BackColor = Color.Transparent;
            pic.Left = (w - pic.Width) / 2;
            pic.Cursor = Cursors.Hand;
            this.Controls.Add(pic);
            pic.BringToFront();


        }

        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="strUp">鼠标移开的文件名</param>
        /// <param name="strOver">鼠标进入的文件名</param>
        public void Init(string strUp, string strOver) {
            m_strUp = strUp;
            m_strOver = strOver;
            if (Visible)
                ChangeState(m_strUp, ref m_imgUp);
        }

        private void ChangeState(string strSource, ref Image imgSource) {
            if (strSource == string.Empty)
                return;
            if (imgSource == null) {
                if (File.Exists(strSource)) {
                    imgSource = Image.FromFile(strSource);
                }
                else {
                    XtraMessageBox.Show(strSource, "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            this.Image = imgSource;

            pic.Top = 0;

            pic.Width = this.Image.Width;
            pic.Height = this.Image.Height;
            pic.Left = (this.Width - pic.Width) / 2;
        }

        private void ImageButton_MouseEnter(object sender, EventArgs e) {
            ChangeState(m_strOver, ref m_imgOver);
        }

        private void ImageButton_MouseLeave(object sender, EventArgs e) {
            ChangeState(m_strUp, ref m_imgUp);
        }

        protected override void OnVisibleChanged(EventArgs e) {
            base.OnVisibleChanged(e);

            if (Visible)
                ChangeState(m_strUp, ref m_imgUp);
        }

        /// <summary>
        /// 输出给外面可以点击的空容器
        /// </summary>
        public PictureBox Button {
            get { return pic; }
        }

        /// <summary>
        /// 附带参数
        /// </summary>
        private object m_Source = null;
        public object Source {
            get { return m_Source; }
            set { m_Source = value; }
        }

        public object[] SourceValue = null;


    }
}