Revit.Plugln/FWindSoft/FWindSoft.Wpf/Utils/CursorUtil.cs

/*-------------------------------------------------------------------------
 * 功能描述：CursorUtil
 * 作者：xulisong
 * 创建时间： 2019/4/17 9:14:22
 * 版本号：v1.0
 *  -------------------------------------------------------------------------*/

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Media.Imaging;
using FWindSoft.WindowsApi;

namespace FWindSoft.Wpf.Utils
{
   public  class CursorUtil
    {
        public static Cursor CreateCursor(Stream stream)
        {
            //StreamResourceInfo sri = Application.GetResourceStream(new Uri(@"Resources/0036.cur", UriKind.Relative));
            Cursor cursor = new Cursor(stream);
            return cursor;
        }
        /// <summary>
        /// 识别.ani和.cur文件
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static Cursor CreateCursor(string path)
        {

            Cursor cursor = new Cursor(path);
            return cursor;
        }
  
        #region 自定义方式创建
        /// <summary>
        /// 根据 BitmapImage 创建鼠标图标
        /// </summary>
        /// <param name="bs">鼠标图像</param>
        /// <param name="xHotSpot">焦点在图片中的 X轴 坐标(相对于左上角)</param>
        /// <param name="yHotSpot">焦点在图片中的 Y轴 坐标(相对于左上角)</param>
        /// <returns>错误则返回null</returns>
        public static Cursor CreateCursor(BitmapSource bs, uint xHotSpot = 0, uint yHotSpot = 0)
        {
            Cursor ret = null;
            Bitmap bm = BitmapSourceToBitmap(bs);
            if (bm != null)
            {
                try
                {
                    ret = InternalCreateCursor(bm, xHotSpot, yHotSpot);
                }
                catch (Exception)
                {
                    ret = null;
                }
            }

            return ret;
        }


        /// <summary>
        /// 根据 Bitmap 创建自定义鼠标
        /// </summary>
        /// <param name="bm">鼠标图像</param>
        /// <param name="xHotSpot">焦点在图片中的 X轴 坐标(相对于左上角)</param>
        /// <param name="yHotSpot">焦点在图片中的 Y轴 坐标(相对于左上角)</param>
        /// <returns>错误则返回null</returns>
        public static Cursor CreateCursor(Bitmap bm, uint xHotSpot = 0, uint yHotSpot = 0)
        {
            Cursor ret = null;
            if (bm == null)
            {
                return ret;
            }

            try
            {
                ret = InternalCreateCursor(bm, xHotSpot, yHotSpot);
            }
            catch (Exception)
            {
                ret = null;
            }

            return ret;
        }
        /// <summary>
        /// 根据 本地文件路径 创建鼠标图标
        /// </summary>
        /// <param name="filePath">鼠标图像全路径</param>
        /// <param name="xHotSpot">焦点在图片中的 X轴 坐标(相对于左上角)</param>
        /// <param name="yHotSpot">焦点在图片中的 Y轴 坐标(相对于左上角)</param>
        /// <returns>错误则返回null</returns>
        public static Cursor CreateCursor(String filePath, uint xHotSpot = 0, uint yHotSpot = 0)
        {
            Cursor ret = null;
            if (string.IsNullOrWhiteSpace(filePath) || Directory.Exists(filePath) || !File.Exists(filePath))
            {
                return ret;
            }
            //首先尝试通过默认方法创建
            if (filePath.EndsWith(".ani") || filePath.EndsWith(".cur"))
            {
                try
                {
                    ret = new Cursor(filePath);
                }
                catch (Exception)
                {
                    ret = null;
                }
            }
            if (ret == null)
            {

                Bitmap bmp = null;
                try
                {
                    bmp = Bitmap.FromFile(filePath) as Bitmap;
                    if (bmp != null)
                    {
                        ret = CreateCursor(bmp, xHotSpot, yHotSpot);
                    }
                }
                catch (Exception)
                {
                    ret = null;
                }
            }

            return ret;
        }

        /// <summary>
        /// BitmapSource 转 Bitmap
        /// </summary>
        /// <param name="bi"></param>
        /// <returns>错误则返回null</returns>
        public static Bitmap BitmapSourceToBitmap(BitmapSource bi)
        {
            Bitmap ret = null;
            if (bi == null)
            {
                return ret;
            }
            using (MemoryStream stream = new MemoryStream())
            {
                try
                {
                    BmpBitmapEncoder enc = new BmpBitmapEncoder();
                    enc.Frames.Add(BitmapFrame.Create(bi));
                    enc.Save(stream);
                    ret = new Bitmap(stream);
                }
                catch (Exception)
                {
                    ret = null;
                }
            }
            return ret;
        }



        /// <summary>
        /// 创建鼠标（本方法不允许public，避免内存泄漏）
        /// </summary>
        /// <param name="bitmap"></param>
        /// <param name="xHotSpot"></param>
        /// <param name="yHotSpot"></param>
        /// <returns></returns>
        protected static Cursor InternalCreateCursor(Bitmap bitmap, uint xHotSpot, uint yHotSpot)
        {
            var iconInfo = new IconInfo();
            WinAPI.GetIconInfo(bitmap.GetHicon(), ref iconInfo);
            iconInfo.xHotspot = xHotSpot;//焦点x轴坐标
            iconInfo.yHotspot = yHotSpot;//焦点y轴坐标
            iconInfo.fIcon = false;//设置鼠标
            TSafeHandle cursorHandle = WinAPI.CreateIconIndirect(ref iconInfo);
            cursorHandle.Release = (h) => WinAPI.DestroyIcon(h);
            return CursorInteropHelper.Create(cursorHandle);
        } 
        #endregion
    }
}