using MaiMuControl.Device;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GeBoShi.UIKits.MaiMuMenu
{
    public partial class UITitel_LT : UserControl
    {
        public MenuStrip UserMenuStrip = null;
        private Form _fartherForm = null;
        public Form FatherForm
        {
            get { return _fartherForm; }
            set
            {
                if ( value != null)
                {
                    _original_Height = value.Height;
                    _original_Width = value.Width;
                    _original_Top = value.Top;
                    _original_Left = value.Left;
                }
                _fartherForm = value;
            }
        }

        private int _original_Height;
        private int _original_Width;
        private int _original_Top;
        private int _original_Left;
        private int _windowsState;
        public UITitel_LT()
        {
            InitializeComponent();
            this.Dock = DockStyle.Top;
            if(UserMenuStrip == null)
                this.UimenuStrip.Visible = false;
            else
                this.UimenuStrip = UserMenuStrip;
        }

        public void ShowMenu()
        {
            if (UserMenuStrip == null)
                this.UimenuStrip.Visible = false;
            else
            {
                UserMenuStrip.AutoSize = false;
                UserMenuStrip.Height = this.Height;
                this.tableLayoutPanel1.Controls.Remove( this.UimenuStrip);
                //this.UimenuStrip = UserMenuStrip;
                //this.UimenuStrip.Visible = true;
                this.tableLayoutPanel1.Controls.Add(UserMenuStrip, 1, 0);
                UserMenuStrip.Renderer = new MaiMuMenuRender();
            }

        }
        public void ShowContrlBox(bool min, bool max, bool close, bool size = false)
        {
            this.tsbMin.Visible = min;
            this.tsbMax.Visible = max;
            this.tsbClose.Visible = close;
            this.tsbSize.Visible = size;    
        }
        private void tsbSize_Click(object sender, EventArgs e)
        {

        }

        private void tsbMin_Click(object sender, EventArgs e)
        {
            FatherForm.WindowState = FormWindowState.Minimized;
            _windowsState = (int)FormWindowState.Minimized;
        }

        private void tsbMax_Click(object sender, EventArgs e)
        {
            //if (FatherForm.WindowState != FormWindowState.Maximized)
            if((FatherForm.Width < SystemInformation.WorkingArea.Width)&&(FatherForm.Height < SystemInformation.WorkingArea.Height))
            {
                _windowsState = (int)FormWindowState.Maximized;
                //FatherForm.WindowState = FormWindowState.Maximized;
                FatherForm.Top = 0;
                FatherForm.Left = 0;
                FatherForm.Width = SystemInformation.WorkingArea.Width;
                FatherForm.Height = SystemInformation.WorkingArea.Height;
            }
            else
            {
                _windowsState = (int)FormWindowState.Normal;
                //FatherForm.WindowState = FormWindowState.Normal;
                FatherForm.Top = (SystemInformation.WorkingArea.Height - _original_Height) / 2;
                FatherForm.Left = (SystemInformation.WorkingArea.Width - _original_Width) / 2;
               
                FatherForm.Width = _original_Width;
                FatherForm.Height = _original_Height;
                //FatherForm.StartPosition = FormStartPosition.CenterScreen;
            }
        }

        private void tsbClose_Click(object sender, EventArgs e)
        {
            FatherForm.Close();
        }
        #region 鼠标按住拖动界面
        [DllImport("user32.dll")]
        public static extern bool ReleaseCapture();

        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_MOVE = 0xF010;
        public const int HTCAPTION = 0x0002;

        private void UITitel_MouseDown(object sender, MouseEventArgs e)
        {
            ReleaseCapture();
            SendMessage(FatherForm.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
        }
        private void tableLayoutPanel1_MouseDown(object sender, MouseEventArgs e)
        {
            ReleaseCapture();
            SendMessage(FatherForm.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
        }
        private void pictureBox2_MouseDown(object sender, MouseEventArgs e)
        {
            ReleaseCapture();
            SendMessage(FatherForm.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
        }

        #endregion

        private void skinToolStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
        {

        }
        #region 界面放大缩小
        bool isMouseDown = false; //表示鼠标当前是否处于按下状态，初始值为否 
        Point size_change = Point.Empty;
        private void tsbSize_MouseDown(object sender, MouseEventArgs e)
        {
            isMouseDown = true;
            FatherForm.Cursor = Cursors.SizeNESW;
            this.Cursor = Cursors.SizeNESW;
            size_change = e.Location;
        }

        private void tsbSize_MouseMove(object sender, MouseEventArgs e)
        {
            ResizeWindow(e);
        }

        private void tsbSize_MouseUp(object sender, MouseEventArgs e)
        {
            isMouseDown = false;
            FatherForm.Cursor = Cursors.Default;
            this.Cursor = Cursors.Default;
        }

        private void ResizeWindow(MouseEventArgs e)
        {
            //这个判断很重要，只有在鼠标按下时才能拖拽改变窗体大小，如果不作判断，那么鼠标弹起和按下时，窗体都可以改变 
            if (!isMouseDown)
                return;
            //MousePosition的参考点是屏幕的左上角，表示鼠标当前相对于屏幕左上角的坐标this.left和this.top的参考点也是屏幕，属性MousePosition是该程序的重点
            if (FatherForm.Cursor == Cursors.SizeNESW)
            {
                //此行代码在mousemove事件中已经写过，在此再写一遍，并不多余，一定要写
                this.Cursor = Cursors.SizeNESW;
                //下面是改变窗体宽和高的代码，不明白的可以仔细思考一下
                FatherForm.Width = FatherForm.Width + (e.Location.X - size_change.X);
                FatherForm.Top = FatherForm.Top + (e.Location.Y - size_change.Y);
                FatherForm.Height = FatherForm.Height - (e.Location.Y - size_change.Y) ;
                this.Refresh();
            }           
            //即使鼠标按下，但是不在窗口右和下边缘，那么也不能改变窗口大小
            else
                this.Cursor = Cursors.Arrow;
        }
        private void tsbSize_MouseLeave(object sender, EventArgs e)
        {
            isMouseDown = false;
            FatherForm.Cursor = Cursors.Default;
            this.Cursor = Cursors.Default;
        }
        #endregion


    }
}