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Copy pathWindowsTouch.cpp
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159 lines (140 loc) · 3.79 KB
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/*
* @author Valentin Simonov / http://va.lent.in/
*/
#include "WindowsTouch.h"
extern "C"
{
void __stdcall Init(TOUCH_API api, PointerBeganFuncPtr began, PointerMovedFuncPtr moved,
PointerEndedFuncPtr ended, PointerCancelledFuncPtr cancelled)
{
_pointerBeganFunc = began;
_pointerMovedFunc = moved;
_pointerEndedFunc = ended;
_pointerCancelledFunc = cancelled;
_api = api;
_currentWindow = GetActiveWindow();
if (api == WIN8)
{
_oldWindowProc = SetWindowLongPtr(_currentWindow, GWLP_WNDPROC, (LONG_PTR)wndProc8);
}
else
{
RegisterTouchWindow(_currentWindow, 0);
_oldWindowProc = SetWindowLongPtr(_currentWindow, GWLP_WNDPROC, (LONG_PTR)wndProc7);
}
}
void __stdcall Dispose()
{
if (_oldWindowProc)
{
SetWindowLongPtr(_currentWindow, GWLP_WNDPROC, (LONG_PTR)_oldWindowProc);
_oldWindowProc = 0;
if (_api == WIN7)
{
UnregisterTouchWindow(_currentWindow);
}
}
}
void __stdcall SetScreenParams(int width, int height, float offsetX, float offsetY, float scaleX, float scaleY)
{
_screenWidth = width;
_screenHeight = height;
_offsetX = offsetX;
_offsetY = offsetY;
_scaleX = scaleX;
_scaleY = scaleY;
}
}
LRESULT CALLBACK wndProc8(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_TOUCH:
CloseTouchInputHandle((HTOUCHINPUT)lParam);
break;
case WM_POINTERDOWN:
case WM_POINTERUP:
case WM_POINTERUPDATE:
decodeWin8Touches(msg, wParam, lParam);
break;
default:
return CallWindowProc((WNDPROC)_oldWindowProc, hwnd, msg, wParam, lParam);
}
return 0;
}
LRESULT CALLBACK wndProc7(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_TOUCH:
decodeWin7Touches(msg, wParam, lParam);
break;
default:
return CallWindowProc((WNDPROC)_oldWindowProc, hwnd, msg, wParam, lParam);
}
return 0;
}
void decodeWin8Touches(UINT msg, WPARAM wParam, LPARAM lParam)
{
int pointerId = GET_POINTERID_WPARAM(wParam);
POINTER_INFO pointerInfo;
if (!GetPointerInfo(pointerId, &pointerInfo)) return;
POINT p;
p.x = pointerInfo.ptPixelLocation.x;
p.y = pointerInfo.ptPixelLocation.y;
ScreenToClient(_currentWindow, &p);
switch (msg)
{
case WM_POINTERDOWN:
if ((pointerInfo.pointerFlags & POINTER_FLAG_CANCELED) != 0) return;
_pointerBeganFunc(pointerId, pointerInfo.pointerType, Vector2(((float)p.x - _offsetX) * _scaleX, _screenHeight - ((float)p.y - _offsetY) * _scaleY));
break;
case WM_POINTERUP:
if ((pointerInfo.pointerFlags & POINTER_FLAG_CANCELED) != 0)
{
_pointerCancelledFunc(pointerId);
}
else {
_pointerEndedFunc(pointerId);
}
break;
case WM_POINTERUPDATE:
if ((pointerInfo.pointerFlags & POINTER_FLAG_CANCELED) != 0)
{
_pointerCancelledFunc(pointerId);
}
else {
_pointerMovedFunc(pointerId, Vector2(((float)p.x - _offsetX) * _scaleX, _screenHeight - ((float)p.y - _offsetY) * _scaleY));
}
break;
}
}
void decodeWin7Touches(UINT msg, WPARAM wParam, LPARAM lParam)
{
UINT cInputs = LOWORD(wParam);
PTOUCHINPUT pInputs = new TOUCHINPUT[cInputs];
if (!pInputs) return;
if (!GetTouchInputInfo((HTOUCHINPUT)lParam, cInputs, pInputs, sizeof(TOUCHINPUT))) return;
for (UINT i = 0; i < cInputs; i++)
{
TOUCHINPUT touch = pInputs[i];
POINT p;
p.x = touch.x / 100;
p.y = touch.y / 100;
ScreenToClient(_currentWindow, &p);
if ((touch.dwFlags & TOUCHEVENTF_DOWN) != 0)
{
_pointerBeganFunc(touch.dwID, PT_TOUCH, Vector2(((float)p.x - _offsetX) * _scaleX, _screenHeight - ((float)p.y - _offsetY) * _scaleY));
}
else if ((touch.dwFlags & TOUCHEVENTF_UP) != 0)
{
_pointerEndedFunc(touch.dwID);
}
else if ((touch.dwFlags & TOUCHEVENTF_MOVE) != 0)
{
_pointerMovedFunc(touch.dwID, Vector2(((float)p.x - _offsetX) * _scaleX, _screenHeight - ((float)p.y - _offsetY) * _scaleY));
}
}
CloseTouchInputHandle((HTOUCHINPUT)lParam);
delete[] pInputs;
}