/*

* @author Valentin Simonov / http://va.lent.in/

*/

#define WINVER _WIN32_WINNT_WIN7

#define _WIN32_WINNT _WIN32_WINNT_WIN7

#include <windows.h>

#define EXPORT_API __declspec(dllexport)

typedef enum

{

WIN7,

WIN8

} TOUCH_API;

// <Windows 8 touch API>

#define WM_POINTERENTER 0x0249

#define WM_POINTERLEAVE 0x024A

#define WM_POINTERUPDATE 0x0245

#define WM_POINTERDOWN 0x0246

#define WM_POINTERUP 0x0247

#define WM_POINTERCAPTURECHANGED 0x024C

#define POINTER_CANCELLED 0x1000

#define GET_POINTERID_WPARAM(wParam) (LOWORD(wParam))

typedef enum {

PT_POINTER = 0x00000001,

PT_TOUCH = 0x00000002,

PT_PEN = 0x00000003,

PT_MOUSE = 0x00000004,

PT_TOUCHPAD = 0x00000005

} POINTER_INPUT_TYPE;

typedef enum {

POINTER_FLAG_NONE = 0x00000000,

POINTER_FLAG_NEW = 0x00000001,

POINTER_FLAG_INRANGE = 0x00000002,

POINTER_FLAG_INCONTACT = 0x00000004,

POINTER_FLAG_FIRSTBUTTON = 0x00000010,

POINTER_FLAG_SECONDBUTTON = 0x00000020,

POINTER_FLAG_THIRDBUTTON = 0x00000040,

POINTER_FLAG_FOURTHBUTTON = 0x00000080,

POINTER_FLAG_FIFTHBUTTON = 0x00000100,

POINTER_FLAG_PRIMARY = 0x00002000,

POINTER_FLAG_CONFIDENCE = 0x00004000,

POINTER_FLAG_CANCELED = 0x00008000,

POINTER_FLAG_DOWN = 0x00010000,

POINTER_FLAG_UPDATE = 0x00020000,

POINTER_FLAG_UP = 0x00040000,

POINTER_FLAG_WHEEL = 0x00080000,

POINTER_FLAG_HWHEEL = 0x00100000,

POINTER_FLAG_CAPTURECHANGED = 0x00200000,

POINTER_FLAG_HASTRANSFORM = 0x00400000

} POINTER_FLAGS;

typedef enum {

POINTER_CHANGE_NONE,

POINTER_CHANGE_FIRSTBUTTON_DOWN,

POINTER_CHANGE_FIRSTBUTTON_UP,

POINTER_CHANGE_SECONDBUTTON_DOWN,

POINTER_CHANGE_SECONDBUTTON_UP,

POINTER_CHANGE_THIRDBUTTON_DOWN,

POINTER_CHANGE_THIRDBUTTON_UP,

POINTER_CHANGE_FOURTHBUTTON_DOWN,

POINTER_CHANGE_FOURTHBUTTON_UP,

POINTER_CHANGE_FIFTHBUTTON_DOWN,

POINTER_CHANGE_FIFTHBUTTON_UP,

} POINTER_BUTTON_CHANGE_TYPE;

typedef enum {

TOUCH_FLAG_NONE = 0x00000000

} TOUCH_FLAGS;

typedef enum {

TOUCH_MASK_NONE = 0x00000000,

TOUCH_MASK_CONTACTAREA = 0x00000001,

TOUCH_MASK_ORIENTATION = 0x00000002,

TOUCH_MASK_PRESSURE = 0x00000004

} TOUCH_MASK;

typedef enum {

PEN_FLAG_NONE = 0x00000000,

PEN_FLAG_BARREL = 0x00000001,

PEN_FLAG_INVERTED = 0x00000002,

PEN_FLAG_ERASER = 0x00000004

} PEN_FLAGS;

typedef enum {

PEN_MASK_NONE = 0x00000000,

PEN_MASK_PRESSURE = 0x00000001,

PEN_MASK_ROTATION = 0x00000002,

PEN_MASK_TILT_X = 0x00000004,

PEN_MASK_TILT_Y = 0x00000008

} PEN_MASK;

typedef struct {

POINTER_INPUT_TYPE pointerType;

UINT32 pointerId;

UINT32 frameId;

POINTER_FLAGS pointerFlags;

HANDLE sourceDevice;

HWND hwndTarget;

POINT ptPixelLocation;

POINT ptHimetricLocation;

POINT ptPixelLocationRaw;

POINT ptHimetricLocationRaw;

DWORD dwTime;

UINT32 historyCount;

INT32 InputData;

DWORD dwKeyStates;

UINT64 PerformanceCount;

POINTER_BUTTON_CHANGE_TYPE ButtonChangeType;

} POINTER_INFO;

typedef struct {

POINTER_INFO pointerInfo;

TOUCH_FLAGS touchFlags;

TOUCH_MASK touchMask;

RECT rcContact;

RECT rcContactRaw;

UINT32 orientation;

UINT32 pressure;

} POINTER_TOUCH_INFO;

typedef struct {

POINTER_INFO pointerInfo;

PEN_FLAGS penFlags;

PEN_MASK penMask;

UINT32 pressure;

UINT32 rotation;

INT32 tiltX;

INT32 tiltY;

} POINTER_PEN_INFO;

typedef BOOL (WINAPI *GET_POINTER_INFO)(UINT32 pointerId, POINTER_INFO *pointerInfo);

typedef BOOL (WINAPI *GET_POINTER_TOUCH_INFO)(UINT32 pointerId, POINTER_TOUCH_INFO *pointerInfo);

typedef BOOL (WINAPI *GET_POINTER_PEN_INFO)(UINT32 pointerId, POINTER_PEN_INFO *pointerInfo);

GET_POINTER_INFO GetPointerInfo;

GET_POINTER_TOUCH_INFO GetPointerTouchInfo;

GET_POINTER_PEN_INFO GetPointerPenInfo;

// </Windows 8 touch API>

struct Vector2

{

float x, y;

Vector2(float x, float y)

{

this->x = x;

this->y = y;

}

};

struct PointerData

{

POINTER_FLAGS pointerFlags;

UINT32 flags;

UINT32 mask;

POINTER_BUTTON_CHANGE_TYPE changedButtons;

UINT32 rotation;

UINT32 pressure;

INT32 tiltX;

INT32 tiltY;

};

typedef void(__stdcall * PointerDelegatePtr)(int id, UINT32 event, POINTER_INPUT_TYPE type, Vector2 position, PointerData data);

typedef void(__stdcall * LogFuncPtr)(BSTR log);

PointerDelegatePtr _delegate;

LogFuncPtr _log;

HWND _currentWindow;

int _screenWidth;

int _screenHeight;

float _offsetX = 0;

float _offsetY = 0;

float _scaleX = 1;

float _scaleY = 1;

TOUCH_API _api;

LONG_PTR _oldWindowProc;

extern "C"

{

EXPORT_API void __stdcall Init(TOUCH_API api, LogFuncPtr logFunc, PointerDelegatePtr delegate);

EXPORT_API void __stdcall SetScreenParams(int width, int height, float offsetX, float offsetY, float scaleX, float scaleY);

EXPORT_API void __stdcall Dispose();

}

void log(const wchar_t* str);

LRESULT CALLBACK wndProc8(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);

LRESULT CALLBACK wndProc7(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);

void decodeWin8Touches(UINT msg, WPARAM wParam, LPARAM lParam);

void decodeWin7Touches(UINT msg, WPARAM wParam, LPARAM lParam);