/// <summary>
/// 初期化
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="window">トラックバーの親ウィンドウ名</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
/// <param name="userdata"></param>
#else
/// <summary>
/// Constructor
/// </summary>
/// <param name="name">Trackbar name</param>
/// <param name="window">Window name</param>
/// <param name="value">Initial slider position</param>
/// <param name="max">The upper limit of the range this trackbar is working with. </param>
/// <param name="callback">Callback handler</param>
/// <param name="userdata"></param>
#endif
public CvTrackbar(string name, string window, int value, int max, CvTrackbarCallback2 callback, object?userdata)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException(nameof(name));
}
if (string.IsNullOrEmpty(window))
{
throw new ArgumentNullException(nameof(window));
}
this.name = name;
this.window = window;
this.value = value;
this.max = max;
this.callback = callback ?? throw new ArgumentNullException(nameof(callback));
this.userdata = userdata;
// userdataをIntPtrに変換
IntPtr userdataPtr;
if (userdata != null)
{
gchUserdata = GCHandle.Alloc(userdata);
userdataPtr = GCHandle.ToIntPtr(gchUserdata);
}
else
{
userdataPtr = IntPtr.Zero;
}
this.callback = callback;
// コールバックdelegateを、userdataをobjectとするように変換
callbackNative = (pos, ud) =>
{
if (ud == IntPtr.Zero)
{
callback(pos, null);
}
else
{
var gch = GCHandle.FromIntPtr(ud);
callback(pos, gch.Target);
}
};
// コールバックdelegateをポインタに変換
gchCallback = GCHandle.Alloc(callback);
gchCallbackNative = GCHandle.Alloc(callbackNative);
var callbackPtr = Marshal.GetFunctionPointerForDelegate(callbackNative);
//gchValue = GCHandle.Alloc(value, GCHandleType.Pinned);
result = NativeMethods.highgui_createTrackbar(name, window, ref this.value, max, callbackPtr, userdataPtr);
if (result == 0)
{
throw new OpenCvSharpException("Failed to create CvTrackbar.");
}
}
/// <summary>
/// 初期化
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="window">トラックバーの親ウィンドウ名</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
#else
/// <summary>
/// Constructor
/// </summary>
/// <param name="name">Trackbar name</param>
/// <param name="window">Window name</param>
/// <param name="value">Initial slider position</param>
/// <param name="max">The upper limit of the range this trackbar is working with. </param>
/// <param name="callback">Callback handler</param>
#endif
public CvTrackbar(string name, string window, int value, int max, CvTrackbarCallback callback)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException(nameof(name));
}
if (string.IsNullOrEmpty(window))
{
throw new ArgumentNullException(nameof(window));
}
this.name = name;
this.window = window;
this.value = value;
this.max = max;
this.callback = callback ?? throw new ArgumentNullException(nameof(callback));
// userdata wrapper
callbackNative = (pos, ud) => callback(pos);
//gchValue = GCHandle.Alloc(value, GCHandleType.Pinned);
gchCallback = GCHandle.Alloc(callback);
gchCallbackNative = GCHandle.Alloc(callbackNative);
var callbackPtr = Marshal.GetFunctionPointerForDelegate(callbackNative);
NativeMethods.HandleException(
NativeMethods.highgui_createTrackbar(name, window, ref this.value, max, callbackPtr, IntPtr.Zero, out result));
if (result == 0)
{
throw new OpenCvSharpException("Failed to create CvTrackbar.");
}
}
/// <summary>
/// 初期化
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="window">トラックバーの親ウィンドウ名</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
/// <param name="userdata"></param>
#else
/// <summary>
/// Constructor
/// </summary>
/// <param name="name">Trackbar name</param>
/// <param name="window">Window name</param>
/// <param name="value">Initial slider position</param>
/// <param name="max">The upper limit of the range this trackbar is working with. </param>
/// <param name="callback">Callback handler</param>
/// <param name="userdata"></param>
#endif
public CvTrackbar(string name, string window, int value, int max, CvTrackbarCallback2 callback, object userdata)
{
if (string.IsNullOrEmpty(name))
throw new ArgumentNullException(nameof(name));
if (string.IsNullOrEmpty(window))
throw new ArgumentNullException(nameof(window));
if (callback == null)
throw new ArgumentNullException(nameof(callback));
this.name = name;
this.window = window;
this.value = value;
this.max = max;
this.callback = callback;
this.userdata = userdata;
// userdataをIntPtrに変換
IntPtr userdataPtr;
if (userdata != null)
{
gchUserdata = GCHandle.Alloc(userdata);
userdataPtr = GCHandle.ToIntPtr(gchUserdata);
}
else
{
userdataPtr = IntPtr.Zero;
}
this.callback = callback;
// コールバックdelegateを、userdataをobjectとするように変換
callbackNative = delegate(int pos, IntPtr ud)
{
if (ud == IntPtr.Zero)
{
callback(pos, null);
}
else
{
GCHandle gch = GCHandle.FromIntPtr(ud);
callback(pos, gch.Target);
}
};
// コールバックdelegateをポインタに変換
gchCallback = GCHandle.Alloc(callback);
gchCallbackNative = GCHandle.Alloc(callbackNative);
IntPtr callbackPtr = Marshal.GetFunctionPointerForDelegate(callbackNative);
gchValue = GCHandle.Alloc(value, GCHandleType.Pinned);
result = NativeMethods.highgui_createTrackbar(name, window, ref this.value, max, callbackPtr, userdataPtr);
if (result == 0)
throw new OpenCvSharpException("Failed to create CvTrackbar.");
}
/// <summary>
/// 初期化
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="window">トラックバーの親ウィンドウ名</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
/// <param name="userdata"></param>
#else
/// <summary>
/// Constructor
/// </summary>
/// <param name="name">Trackbar name</param>
/// <param name="window">Window name</param>
/// <param name="value">Initial slider position</param>
/// <param name="max">The upper limit of the range this trackbar is working with. </param>
/// <param name="callback">Callback handler</param>
/// <param name="userdata"></param>
#endif
public CvTrackbar(string name, string window, int value, int max, CvTrackbarCallback2 callback, object userdata)
{
if (string.IsNullOrEmpty(name))
throw new ArgumentNullException("name");
if (string.IsNullOrEmpty(window))
throw new ArgumentNullException("window");
if (callback == null)
throw new ArgumentNullException("callback");
_name = name;
_window = window;
_value = value;
_max = max;
_callback = callback;
_userdata = userdata;
// userdataをIntPtrに変換
IntPtr userdataPtr;
if (userdata != null)
{
_gchUserdata = GCHandle.Alloc(_userdata);
userdataPtr = GCHandle.ToIntPtr(_gchUserdata);
}
else
{
userdataPtr = IntPtr.Zero;
}
_callback = callback;
// コールバックdelegateを、userdataをobjectとするように変換
_callbackNative = delegate(int pos, IntPtr ud)
{
if (ud == IntPtr.Zero)
{
callback(pos, null);
}
else
{
GCHandle gch = GCHandle.FromIntPtr(ud);
callback(pos, gch.Target);
}
};
// コールバックdelegateをポインタに変換
_gchCallback = GCHandle.Alloc(callback);
_gchCallbackNative = GCHandle.Alloc(_callbackNative);
IntPtr callbackPtr = Marshal.GetFunctionPointerForDelegate(_callbackNative);
_gchValue = GCHandle.Alloc(value, GCHandleType.Pinned);
#if DEBUG
int result = CvInvoke.cvCreateTrackbar2(name, window, ref value, max, _callbackNative, userdataPtr);
#else
_result = CvInvoke.cvCreateTrackbar2(name, window, ref value, max, callbackPtr, userdataPtr);
#endif
if (_result == 0)
throw new OpenCvSharpException("Failed to create CvTrackbar.");
}
