using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Threading;

namespace AnotherTodayScreenItem.Utl
{
    ///

    /// 手机震动功能
    ///

    class ShakeOperation
    {
        /*
          利用C#开发Pocket PC程序，想在程序里调用设备的震动功能，至少再wm5中还没有这样的API，上网查了不少例子，都只能再c++下调用。既然这样，那唯一的办法是运用P/Invoke了，在“coredll.dll”中有这样两个函数
        BOOL WINAPI NLedGetDeviceInfo( UINT nInfoId, void *pOutput );
        BOOL WINAPI NLedSetDevice( UINT nDeviceId, void *pInput );
        NLedGetDeviceInfo是获得LED数量，NLedSetDevice是来设置LED状态的，我们只有通过它来启动或者关闭Pocket PC设备的震动与否。
        说明一下：一般PPC设备都有两个LED，一个就是扬声器0（Radio LED），另一个则是振动器1（Vibrator）了。
        在我的PPC设备上发现第二个是Vibrator，不知道是不是所有的PPC都是这样子的。后来查到“On the HTC Himalaya the vibration device is implemented at index 1。”也就是HTC内核的都是1.*/

        class NLED_SETTINGS_INFO
        {
            public uint LedNum;
            public uint OffOnBlink;
            public int TotalCycleTime;
            public int OnTime;
            public int OffTime;
            public int MetaCycleOn;
            public int MetaCycleOff;
        }

        class NLED_COUNT_INFO
        {
            public int cLeds;
        }

        const int NLED_COUNT_INFO_ID = 0;
        const int NLED_SETTINGS_INFO_ID = 2;

        //振动器状态
        public enum Status
        {
            FF = 0,
            ON,
            BLINK
        }

        /**/
        ///

            /// 获得LED个数
            ///

            [DllImport("coredll.dll", CallingConvention = CallingConvention.Winapi, CharSet = CharSet.Unicode,
                            EntryPoint = "NLedGetDeviceInfo", PreserveSig = true, SetLastError = true)]
            extern static bool NLedGetDeviceInfo(uint nID, NLED_COUNT_INFO pOutput);

            /**/
            ///

            /// 设置LED状态
            ///

            [DllImport("coredll.dll", CallingConvention = CallingConvention.Winapi, CharSet = CharSet.Unicode,
                   EntryPoint = "NLedSetDevice", PreserveSig = true, SetLastError = false)]
            extern static bool NLedSetDevice(uint nID, NLED_SETTINGS_INFO pOutput);

            /**/
            ///

            /// 获得LED个数
            ///

            public int GetLedCount()
            {
                int wCount = 0;
                NLED_COUNT_INFO nci = new NLED_COUNT_INFO();
                if (NLedGetDeviceInfo(NLED_COUNT_INFO_ID, nci))
                {
                    wCount = nci.cLeds;
                }
                return wCount;
            }

            /**/
            ///

            /// 设置LED状态
            ///

            /// Led（1/0），一般是1，即第二个LED
            /// 状态
            public void SetLedStatus(int wLed, Status wStatus)
            {
                NLED_SETTINGS_INFO nsi = new NLED_SETTINGS_INFO();
                nsi.LedNum = (uint)wLed;
                nsi.OffOnBlink = (uint)wStatus;
                NLedSetDevice(NLED_SETTINGS_INFO_ID, nsi);
            }

            /**/
            ///

            /// 设置LED状态
            ///

            /// Led（1/0）
            /// 状态
            /// 持续时间
            public void SetLedStatus(int wLed, Status wStatus, int millisecondsTimeout)
            {
                this.SetLedStatus(wLed, wStatus);
                System.Threading.Thread.Sleep(millisecondsTimeout);
                //关闭震动
                NLED_SETTINGS_INFO nsi = new NLED_SETTINGS_INFO();
                nsi.LedNum = (uint)wLed;
                nsi.OffOnBlink = (uint)Status.OFF;
                NLedSetDevice(NLED_SETTINGS_INFO_ID, nsi);
            }

            /**/
            ///

            /// 设置LED状态
            ///

            /// 状态
            public void SetLedStatus(Status wStatus)
            {
                NLED_SETTINGS_INFO nsi = new NLED_SETTINGS_INFO();
                nsi.OffOnBlink = (uint)wStatus;
                //自动查找震动LED
                for (int i = 0; i < this.GetLedCount(); i++)
                {
                    nsi.LedNum = (uint)i;
                    NLedSetDevice(NLED_SETTINGS_INFO_ID, nsi);
                }
            }

            /**/
            ///

            /// 设置LED状态
            ///

            /// 状态
            /// 持续时间
            public void SetLedStatus(Status wStatus, int millisecondsTimeout)
            {
                this.SetLedStatus(wStatus);
                System.Threading.Thread.Sleep(millisecondsTimeout);
                //关闭震动
                NLED_SETTINGS_INFO nsi = new NLED_SETTINGS_INFO();
                nsi.OffOnBlink = (uint)Status.OFF;
                for (int i = 0; i < this.GetLedCount(); i++)
                {
                    nsi.LedNum = (uint)i;
                    NLedSetDevice(NLED_SETTINGS_INFO_ID, nsi);
                }
            }

            /**/
            ///

            /// 循环震动
            ///

            /// 次数
            public void CycleVibrate(int times)
            {
                for (int i = 0; i < times; i++)
                {
                    this.SetLedStatus(Status.ON);
                    Thread.Sleep(400);
                    this.SetLedStatus(Status.OFF);
                    Thread.Sleep(200);
                }
            }
    }

}