using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;
namespace LYFZ.ComponentLibrary
{
   
    /// <summary>
    /// 水晶按钮
    /// </summary>
    public class GlassButton : Control
    {
        #region 控件状态
        /// <summary>
        /// 控件状态
        /// </summary>
        public enum State
        {
            /// <summary>
            /// 无0
            /// </summary>
            Normal = 0,
            /// <summary>
            /// 获得焦点1
            /// </summary>
            Focused = 1,
            /// <summary>
            /// 失去焦点2
            /// </summary>
            LostFocused = 2,
            /// <summary>
            /// 鼠标指针进入控件3
            /// </summary>
            MouseEnter = 3,

             /// <summary>
            /// 鼠标按下按钮时4
            /// </summary>
            MouseDown = 4 //
        }
        #endregion

        #region//私有变量
        private int bmp_Left;
        private int bmp_Top = 6;
        private int bmp_Size = 48;

       // private bool _focused = false;
        private State state = State.Normal;
        private Bitmap _BackImg = new Bitmap(LYFZ.ComponentLibrary.Properties.Resources.toolbar_hover);
        /// <summary>
        /// 设置背景图片
        /// </summary>
        public Bitmap BackImg
        {
            get { return _BackImg; }
            set { _BackImg = value; }
        }

        private Bitmap _bmp = LYFZ.ComponentLibrary.Properties.Resources._062;

       

        #endregion

        #region//构造函数
        public GlassButton()
        {
            try
            {
                this.SetStyle(ControlStyles.DoubleBuffer, true);
                this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
                this.SetStyle(ControlStyles.UserPaint, true);
                this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
                this.SetStyle(ControlStyles.StandardDoubleClick, false);
                this.SetStyle(ControlStyles.Selectable, true);
                ResizeRedraw = true;
                BackColor = Color.Transparent;
                ForeColor = Color.White;//初始文本颜色
                Size = new Size(80, 75);//初始大小
                Font = new Font("微软雅黑", 9, System.Drawing.FontStyle.Bold);//控件字体
            }
            catch { }
        }
        #endregion

        #region//属性
        private  bool _thisButton = false;
        /// <summary>
        /// 当前铵钮
        /// </summary>
        public  bool ThisButton
        {
            get { return _thisButton; }
            set { _thisButton = value; Invalidate(false); }
        }
     /*   /// <summary>
        /// 图片大小
        /// </summary>
        [CategoryAttribute("组件扩展属性"), Description("获取或设置控件显示的图标的大小")]
        public int Bmp_Size
        {
            get { return bmp_Size; }
            set { bmp_Size = value; }
        }*/
        /// <summary>
        /// 获取或设置控件显示的图片
        /// </summary>
        [CategoryAttribute("组件扩展属性"), Description("获取或设置控件显示的图标")]
        public Bitmap Bitmap
        {
            get { return _bmp; }
            set
            {
                _bmp = value;
                Invalidate(false);
            }
        }

        /// <summary>
        /// 重写Text属性
        /// </summary>
        [DescriptionAttribute("重写Text属性"), CategoryAttribute("组件扩展属性")]
        public override string Text
        {
            set { base.Text = value; Invalidate(false); }

            get
            {
                return base.Text;
            }
        }


        #endregion

        #region//重载事件
        //自定义绘制
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            Graphics g = e.Graphics;
            g.SmoothingMode = SmoothingMode.HighQuality;
            g.PixelOffsetMode = PixelOffsetMode.HighQuality;
           
            DrawImage(g);
            
            switch (state)
            {
                case State.MouseEnter:
                case State.Focused:
                    {
                        DrawIsSelected(g,2);
                        break;
                    }
                case State.MouseDown:
                    DrawIsSelected(g, 1);
                    break;
                case State.Normal:

                case State.LostFocused:
                    if (ThisButton)
                    {
                        DrawIsSelected(g,2);
                    }
                    
                    break;

            }

            
            DrawText(g);
        }


        bool isProhibitedResize = true;
        /// <summary>
        /// 获取或设置控件显示的图片
        /// </summary>
        [CategoryAttribute("组件扩展属性"), Description("禁止调整大小")]
        public bool IsProhibitedResize
        {
            get { return isProhibitedResize; }
            set
            {
                isProhibitedResize = value;
                Invalidate(false);
            }
        }
        

        /// <summary>
        /// 禁止调整大小
        /// </summary>
        /// <param name="e"></param>
        protected override void OnResize(EventArgs e)
        {
            if (IsProhibitedResize)
            {
                Width = 80;
                Height = 75;
            }
            else {
                if (Width > Height)
                {
                    this.bmp_Size = Height-6;
                }
                else {
                    this.bmp_Size = Width-6;
                }
            }
        }

        /// <summary>
        /// 获取焦点后
        /// </summary>
        /// <param name="e"></param>
        protected override void OnGotFocus(EventArgs e)
        {
            base.OnGotFocus(e);
            this.state = State.Focused;
            Invalidate(false);
        }

        /// <summary>
        /// 失去焦点后
        /// </summary>
        /// <param name="e"></param>
        protected override void OnLostFocus(EventArgs e)
        {
            base.OnLostFocus(e);
            this.state = State.LostFocused;
            Invalidate(false);
        }

        /// <summary>
        /// 鼠标进入控件可见部份
        /// </summary>
        /// <param name="e"></param>
        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);
            state = State.MouseEnter;
            Invalidate(false);
        }
        /// <summary>
        /// 鼠标离开控件可见部份
        /// </summary>
        /// <param name="e"></param>
        protected override void OnMouseLeave(EventArgs e)
        {
            base.OnMouseLeave(e);
            
                state = State.Normal;
                Invalidate(false);
            
        }
        /// <summary>
        /// 鼠标弹起后
        /// </summary>
        /// <param name="mevent"></param>
        protected override void OnMouseUp(MouseEventArgs mevent)
        {
            base.OnMouseUp(mevent);
            this.state = State.MouseEnter;
            Invalidate(false);
        }
        /// <summary>
        /// 按下
        /// </summary>
        /// <param name="e"></param>
        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
            this.state = State.MouseDown;
            Invalidate(false);
        }

        #endregion 


        #region//方法

        #region//Draw
        void DrawIsSelected(Graphics g,int index)
        {
            ImageDrawRect.DrawRect(g, _BackImg, ClientRectangle, index, 2);
        }

        void DrawImage(Graphics g)
        {
            if (_bmp != null)
            {
                Bitmap bmp = ScaleZoom(_bmp);
                if (!this.Enabled) {
                    bmp =LYFZ.WinAPI.CustomPublicMethod.GetGrayImage(bmp);
                }
                bmp_Left = (Width - bmp.Width) / 2;
                bmp_Top = (Height - bmp.Height) / 2-6;
                if (bmp_Top <= 6) {
                    bmp_Top = 6;
                }
                g.DrawImage(bmp, new Rectangle(bmp_Left, bmp_Top, bmp.Width, bmp.Height));
            }
        }

        void DrawText(Graphics g)
        {
            SizeF size = g.MeasureString(this.Text, Font);
            Color fColor = ForeColor;
            if (!this.Enabled)
                fColor = Color.Gray;
            int txtTop = this.Height - 20;
            txtTop = (Height -Convert.ToInt32(size.Height)) / 2 + 25;
            if (txtTop > Height - 20) { txtTop = this.Height - 20; }
            g.DrawString(this.Text, Font, new SolidBrush(fColor), (this.Width - size.Width) / 2, txtTop);
        }
        #endregion

        #region//按比例缩放图片
        public Bitmap ScaleZoom(Bitmap bmp)
        {
            if (bmp != null)
            {
                double zoomScale;
                if (bmp.Width > bmp_Size || bmp.Height > bmp_Size)
                {
                    double imageScale = (double)bmp.Width / (double)bmp.Height;
                    double thisScale = 1;

                    if (imageScale > thisScale)
                    {
                        zoomScale = (double)bmp_Size / (double)bmp.Width;
                        return BitMapZoom(bmp, bmp_Size, (int)(bmp.Height * zoomScale));
                    }
                    else
                    {
                        zoomScale = (double)bmp_Size / (double)bmp.Height;
                        return BitMapZoom(bmp, (int)(bmp.Width * zoomScale), bmp_Size);
                    }
                }
            }
            return bmp;
        }
        #endregion

        #region//缩放BitMap
        /// <summary>
        /// 图片缩放
        /// </summary>
        /// <param name="bmpSource">源图片</param>
        /// <param name="bmpSize">缩放图片的大小</param>
        /// <returns>缩放的图片</returns>
        public Bitmap BitMapZoom(Bitmap bmpSource, int bmpWidth, int bmpHeight)
        {
            Bitmap bmp, zoomBmp;
            try
            {
                bmp = new Bitmap(bmpSource);
                zoomBmp = new Bitmap(bmpWidth, bmpHeight);
                Graphics gh = Graphics.FromImage(zoomBmp);
                gh.InterpolationMode = InterpolationMode.HighQualityBicubic;
                gh.DrawImage(bmp, new Rectangle(0, 0, bmpWidth, bmpHeight), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);

                gh.Dispose();
                return zoomBmp;
            }
            catch
            { }
            finally
            {
                bmp = null;
                zoomBmp = null;
                GC.Collect();
            }
            return null;
        }
        #endregion

        #endregion
    }
}