using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Interop;

namespace GeoSigmaViewer
{
    public class DrawCursors
    {
        //public static Cursor Pencil
        //{
        //    get
        //    {
        //        return CursorResourceLoader.LoadEmbeddedCursor(Resource1.Pencil);
        //    }
        //}
        public static bool IsHightDpi()
        {
            if (PrimaryScreen.ScaleX >= 1.9 || PrimaryScreen.ScaleY >= 1.9)
            {
                return true;
            }
            return false;
        }
        public static Cursor Default
        {
            get
            {
                //return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curDefault);
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curDefault);
            }
        }
        public static Cursor Select
        {
            get
            {
                if (IsHightDpi())
                {
                    // return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curSelectSmall);
                    return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curSelect);
                }
                else
                {
                    return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curSelect);
                    //return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curSelectSmall);
                }
            }
        }
        public static Cursor ViewWindow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.viewWindow);
            }
        }
        public static Cursor Pan
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curPan);
            }
        }
        public static Cursor Pan1
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curPan1);
            }
        }
        public static Cursor Line
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.Line);
            }
        }
        public static Cursor Ellipse
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.Ellipse);
            }
        }
        public static Cursor Rectangle
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.Rectangle);
            }
        }
        public static Cursor PolyHandle
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.PolyHandle);
            }
        }
        public static Cursor Pencil
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.Pencil);
            }
        }
        public static Cursor CurveDraw
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curCurve);
            }
        }
        public static Cursor AddHandle
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curAddHandle);
            }
        }
        public static Cursor CurveMovePoint
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curMoveHandle);
            }
        }
        public static Cursor CurveMove
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curMove4Way);
            }
        }
        public static Cursor TrackNWSE
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.trcknwse);
            }
        }
        public static Cursor TrackNESW
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.trcknesw);
            }
        }
        public static Cursor TrackNS
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.trckns);
            }
        }
        public static Cursor TrackWE
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.trckwe);
            }
        }
        public static Cursor Track4Way
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.trck4way);
            }
        }
        public static Cursor Move4Way
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curMove4Way);
            }
        }
        public static Cursor Copy4Way
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curCopy4Way);
            }
        }
        public static Cursor Rotate
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curRotate);
            }
        }
        public static Cursor ShearHor
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curShearHor);
            }
        }
        public static Cursor ShearVert
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curShearVert);
            }
        }
        public static Cursor HArrow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curHArrow);
            }
        }
        public static Cursor VArrow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curVArrow);
            }
        }
        public static Cursor LBArrow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curLBArrow);
            }
        }
        public static Cursor RBArrow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curRBArrow);
            }
        }



        public static Cursor HShearArrow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curShearHor);
            }
        }
        public static Cursor VShearArrow
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curShearVert);
            }
        }
        public static Cursor Range
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curRange);
            }
        }
        public static Cursor BreakCurve
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curBreakCurve);
            }
        }
        public static Cursor SelectElement
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curSelectElement);
            }
        }
        public static Cursor Delete
        {
            get
            {
                return CursorResourceLoader.LoadEmbeddedCursor(Resource1.curDelete);
            }
        }
    }
    public class PrimaryScreen
    {
        #region Win32 API
        [DllImport("user32.dll")]
        static extern IntPtr GetDC(IntPtr ptr);
        [DllImport("gdi32.dll")]
        static extern int GetDeviceCaps(
        IntPtr hdc, // handle to DC
        int nIndex // index of capability
        );
        [DllImport("user32.dll", EntryPoint = "ReleaseDC")]
        static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDc);
        #endregion
        #region DeviceCaps常量
        const int HORZRES = 8;
        const int VERTRES = 10;
        const int LOGPIXELSX = 88;
        const int LOGPIXELSY = 90;
        const int DESKTOPVERTRES = 117;
        const int DESKTOPHORZRES = 118;
        #endregion

        #region 属性
        /// <summary>
        /// Gets 获取屏幕分辨率当前物理大小.
        /// </summary>
        public static System.Drawing.Size WorkingArea
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                System.Drawing.Size size = new System.Drawing.Size();
                size.Width = GetDeviceCaps(hdc, HORZRES);
                size.Height = GetDeviceCaps(hdc, VERTRES);
                ReleaseDC(IntPtr.Zero, hdc);
                return size;
            }
        }
        /// <summary>
        /// Gets 当前系统DPI_X 大小 一般为96.
        /// </summary>
        public static int DpiX
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                int dpiX = GetDeviceCaps(hdc, LOGPIXELSX);
                ReleaseDC(IntPtr.Zero, hdc);
                return dpiX;
            }
        }
        /// <summary>
        /// Gets 当前系统DPI_Y 大小 一般为96.
        /// </summary>
        public static int DpiY
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                int dpiX = GetDeviceCaps(hdc, LOGPIXELSY);
                ReleaseDC(IntPtr.Zero, hdc);
                return dpiX;
            }
        }
        /// <summary>
        /// Gets 真实设置的桌面分辨率大小.
        /// </summary>
        public static System.Drawing.Size DESKTOP
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                System.Drawing.Size size = new System.Drawing.Size();
                size.Width = GetDeviceCaps(hdc, DESKTOPHORZRES);
                size.Height = GetDeviceCaps(hdc, DESKTOPVERTRES);
                ReleaseDC(IntPtr.Zero, hdc);
                return size;
            }
        }

        /// <summary>
        /// Gets 宽度缩放百分比.
        /// </summary>
        public static float ScaleX
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                int t = GetDeviceCaps(hdc, DESKTOPHORZRES);
                int d = GetDeviceCaps(hdc, HORZRES);
                float scaleX = (float)GetDeviceCaps(hdc, DESKTOPHORZRES) / (float)GetDeviceCaps(hdc, HORZRES);
                ReleaseDC(IntPtr.Zero, hdc);
                return scaleX;
            }
        }
        /// <summary>
        /// Gets 获取高度缩放百分比.
        /// </summary>
        public static float ScaleY
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                float scaleY = (float)(float)GetDeviceCaps(hdc, DESKTOPVERTRES) / (float)GetDeviceCaps(hdc, VERTRES);
                ReleaseDC(IntPtr.Zero, hdc);
                return scaleY;
            }
        }
        #endregion
    }
}