using System;
using System.Collections;
using System.IO;
using System.Runtime.InteropServices;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using TMPro;
namespace zFrame.Extend
{
[RequireComponent(typeof(TMP_InputField))]
public class TouchKeyBoardComponent : MonoBehaviour, ISelectHandler, IDeselectHandler
{
TMP_InputField field;
[SerializeField] bool forcePopup = false;
static Coroutine closeCoroutine = null;
void Start()
{
forcePopup = true;
field = GetComponent<TMP_InputField>();
}
static TouchKeyBoardComponent() //靜態構造,無論多少實例全局只執行一次。能夠避免某些時候軟鍵盤首次無法喚起的異常
{
HideKeyboard();
}
#region Coroutine
IEnumerator DelayOpen()
{
yield return new WaitForEndOfFrame(); //延遲開啓 ,避免多個 InputField 輸入數據相同的問題
string _file = @"C:\Program Files\Common Files\microsoft shared\ink\TabTip.exe";
if (File.Exists(_file))
{
Application.OpenURL(_file);
field.text = "DelayOpen";
}
}
IEnumerator DelayQuit()
{
yield return new WaitForSecondsRealtime(0.1f);
HideKeyboard();
}
#endregion
static void HideKeyboard()
{
try
{
IntPtr _touchhWnd = IntPtr.Zero;
_touchhWnd = FindWindow("IPTip_Main_Window", null);
if (_touchhWnd != IntPtr.Zero) PostMessage(_touchhWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
}
catch { }
}
#region EventSystem Interface Implement
void ISelectHandler.OnSelect(BaseEventData eventData)
{
PointerEventData data = eventData as PointerEventData;
//如果不是鼠標左鍵觸發的選中事件就證明是Touch觸發的,那麼就可以歡快的彈軟鍵盤啦!
if (forcePopup || (null != data && data.pointerId != -1))
{
if (null != closeCoroutine) //及時的阻止軟鍵盤的關閉動作,避免了軟鍵盤的反反覆覆的摺疊與展開
{
StopCoroutine(closeCoroutine);
closeCoroutine = null;
}
StartCoroutine(DelayOpen());
}
}
void IDeselectHandler.OnDeselect(BaseEventData eventData)
{
//不關心哪個輸入框取消了選中都延遲摺疊軟鍵盤,因爲延遲,所以點了下一個輸入框還能保持軟鍵盤喚起。
if (null == closeCoroutine)
{
closeCoroutine = StartCoroutine(DelayQuit());
}
}
#endregion
#region Win32API Wrapper
[DllImport("User32.dll", SetLastError = true, CharSet = CharSet.Auto, EntryPoint = "FindWindow")]
private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("User32.dll", SetLastError = true, CharSet = CharSet.Auto, EntryPoint = "PostMessage")]
private static extern bool PostMessage(IntPtr hWnd, int Msg, uint wParam, uint lParam);
private const Int32 WM_SYSCOMMAND = 274;
private const UInt32 SC_CLOSE = 61536;
#endregion
}
}