MSO7000X/Uni-Trend.MSO7000X.Touch.ManupulationHelper/ManipulationEventSink.h

#pragma once

#include <ole2.h>
#include <ocidl.h>
#include <manipulations.h>

namespace ManipulationHelper
{
	/// <summary>
	/// _IManipulationEvents的ManipulationStarted接口回调函数类型
	/// <param name="X">x coordiante of the initial point of manipulation(1/100 of pixel)</param>
	/// <param name="Y">y coordiante of the initial point of manipulation(1/100 of pixel)</param>
	/// </summary>
	typedef void (*ManipulationStartedCallBack)(
		FLOAT x,
		FLOAT y);

	/// <summary>
	/// _IManipulationEvents的ManipulationDelta接口回调函数类型
	/// <param name="X">x coordiante of the initial point of manipulation(1/100 of pixel)</param>
	/// <param name="Y">y coordiante of the initial point of manipulation(1/100 of pixel)</param>
	/// <param name="translationDeltaX">shift of the x-coordinate (1/100 of pixel)</param>
	/// <param name="translationDeltaY">shift of the y-coordinate (1/100 of pixel)</param>
	/// <param name="scaleDelta">scale factor (zoom in/out)</param>
	/// <param name="expansionDelta">the current rate of scale change</param>
	/// <param name="rotationDelta">rotation angle in radians</param>
	/// <param name="cumulativeTranslationX">cumulative shift of x-coordinate (1/100 of pixel)</param>
	/// <param name="cumulativeTranslationY">cumulative shift of y-coordinate (1/100 of pixel)</param>
	/// <param name="cumulativeScale">cumulative scale factor (zoom in/out)</param>
	/// <param name="cumulativeExpansion">cumulative rate of scale change</param>
	/// <param name="cumulativeRotation">cumulative rotation angle in radians</param>
	/// </summary>
	typedef void (*ManipulationDeltaCallBack)(
		FLOAT x,
		FLOAT y,
		FLOAT translationDeltaX,
		FLOAT translationDeltaY,
		FLOAT scaleDelta,
		FLOAT expansionDelta,
		FLOAT rotationDelta,
		FLOAT cumulativeTranslationX,
		FLOAT cumulativeTranslationY,
		FLOAT cumulativeScale,
		FLOAT cumulativeExpansion,
		FLOAT cumulativeRotation);

	/// <summary>
	/// _IManipulationEvents的ManipulationCompleted接口回调函数类型
	/// <param name="X">x coordiante of the initial point of manipulation(1/100 of pixel)</param>
	/// <param name="Y">y coordiante of the initial point of manipulation(1/100 of pixel)</param>
	/// <param name="cumulativeTranslationX">cumulative shift of x-coordinate (1/100 of pixel)</param>
	/// <param name="cumulativeTranslationY">cumulative shift of y-coordinate (1/100 of pixel)</param>
	/// <param name="cumulativeScale">cumulative scale factor (zoom in/out)</param>
	/// <param name="cumulativeExpansion">cumulative rate of scale change</param>
	/// <param name="cumulativeRotation">cumulative rotation angle in radians</param>
	/// </summary>
	typedef void (*ManipulationCompletedCallBack)(
		FLOAT  x,
		FLOAT  y,
		FLOAT  cumulativeTranslationX,
		FLOAT  cumulativeTranslationY,
		FLOAT  cumulativeScale,
		FLOAT  cumulativeExpansion,
		FLOAT  cumulativeRotation);

	class ManipulationEventSink : public _IManipulationEvents
	{
	public:
		ManipulationEventSink();
		virtual ~ManipulationEventSink();

		/// <summary>
		/// 连接到一个IManipulationProcessor上(参考微软例程)
		/// </summary>
		/// <param name="pManipProc">IManipulationProcessor实例</param>
		/// <returns></returns>
		bool Connect(IManipulationProcessor* pManipProc);

		bool Disconnect();

		/// <summary>
		/// 设置ManipulationStarted方法的回调函数
		/// </summary>
		/// <param name="">ManipulationStartedCallBack的函数指针</param>
		void SetManipulationStartedCallBack(ManipulationStartedCallBack);

		/// <summary>
		/// 设置ManipulationDelta方法的回调函数
		/// </summary>
		/// <param name="">ManipulationDeltaCallBack的函数指针</param>
		void SetManipulationDeltaCallBack(ManipulationDeltaCallBack);

		/// <summary>
		/// 设置ManipulationCompleted方法的回调函数
		/// </summary>
		/// <param name="">ManipulationCompletedCallBack的函数指针</param>
		void SetManipulationCompletedCallBack(ManipulationCompletedCallBack);

		// _IManipulationEvents需要实现的方法(这些方法会被回调)
		virtual HRESULT STDMETHODCALLTYPE ManipulationStarted(
			FLOAT x,
			FLOAT y);

		virtual HRESULT STDMETHODCALLTYPE ManipulationDelta(
			FLOAT x,
			FLOAT y,
			FLOAT translationDeltaX,
			FLOAT translationDeltaY,
			FLOAT scaleDelta,
			FLOAT expansionDelta,
			FLOAT rotationDelta,
			FLOAT cumulativeTranslationX,
			FLOAT cumulativeTranslationY,
			FLOAT cumulativeScale,
			FLOAT cumulativeExpansion,
			FLOAT cumulativeRotation);

		virtual HRESULT STDMETHODCALLTYPE ManipulationCompleted(
			FLOAT x,
			FLOAT y,
			FLOAT cumulativeTranslationX,
			FLOAT cumulativeTranslationY,
			FLOAT cumulativeScale,
			FLOAT cumulativeExpansion,
			FLOAT cumulativeRotation);

		// IUnknown methods
		STDMETHOD_(ULONG, AddRef)(void);
		STDMETHOD_(ULONG, Release)(void);
		STDMETHOD(QueryInterface)(REFIID riid, LPVOID* ppvObj);

	private:
		// Reference count of the COM object.
		LONG m_cRefCount;

		// The IConnectionPoint interface supports connection points for 
		// connectable objects.
		IConnectionPoint* m_pConnection;

		// Cookie of the connection.
		DWORD m_dwCookie;

		//COM的IManipulationProcessor实例
		IManipulationProcessor* m_pIManipProc;

		//ManipulationStarted方法的回调函数
		ManipulationStartedCallBack  m_mStartedCallBack = NULL;

		////ManipulationDelta方法的回调函数
		ManipulationDeltaCallBack  m_mDeltaCallBack = NULL;

		//ManipulationCompleted方法的回调函数
		ManipulationCompletedCallBack  m_mCompletedCallBack = NULL;
	};
}