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From Olaf Flebbe, "Appended now a bugfixed proposition for the Win7 Multitouch Support.

Browse Source 
Now examples/osgmultitouch really works ;-)

Based on yesterdays trunk.

* It should now work with all Visual Studio Versions.
* WIN_VER is left as-is
* I added the missing declarations from a recent SDK, if not supplied by the SDK
* If someone chooses to update WIN_VER, the declarations should not break.
* All API Calls are runtime detected.
* No CMake Variable, Support is enabled automatically ."
This commit is contained in:
Robert Osfield
2012-03-07 09:32:38 +00:00
parent 17ba6f0a24
commit 71893c46e5
1 changed files with 136 additions and 0 deletions
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136
src/osgViewer/GraphicsWindowWin32.cpp
View File

@@ -29,6 +29,78 @@
#include <sstream>
#include <windowsx.h>
#if(WINVER < 0x0601)
// Provide Declarations for Multitouch
#define WM_TOUCH 0x0240
/*
* Touch Input defines and functions
*/
/*
* Touch input handle
*/
DECLARE_HANDLE(HTOUCHINPUT);
typedef struct tagTOUCHINPUT {
LONG x;
LONG y;
HANDLE hSource;
DWORD dwID;
DWORD dwFlags;
DWORD dwMask;
DWORD dwTime;
ULONG_PTR dwExtraInfo;
DWORD cxContact;
DWORD cyContact;
} TOUCHINPUT, *PTOUCHINPUT;
typedef TOUCHINPUT const * PCTOUCHINPUT;
/*
* Conversion of touch input coordinates to pixels
*/
#define TOUCH_COORD_TO_PIXEL(l) ((l) / 100)
/*
* Touch input flag values (TOUCHINPUT.dwFlags)
*/
#define TOUCHEVENTF_MOVE 0x0001
#define TOUCHEVENTF_DOWN 0x0002
#define TOUCHEVENTF_UP 0x0004
#define TOUCHEVENTF_INRANGE 0x0008
#define TOUCHEVENTF_PRIMARY 0x0010
#define TOUCHEVENTF_NOCOALESCE 0x0020
#define TOUCHEVENTF_PEN 0x0040
#define TOUCHEVENTF_PALM 0x0080
#endif
typedef
BOOL
(WINAPI GetTouchInputInfoFunc)(
HTOUCHINPUT hTouchInput, // input event handle; from touch message lParam
UINT cInputs, // number of elements in the array
PTOUCHINPUT pInputs, // array of touch inputs
int cbSize); // sizeof(TOUCHINPUT)
typedef
BOOL
(WINAPI CloseTouchInputHandleFunc(
HTOUCHINPUT hTouchInput)); // input event handle; from touch message lParam
typedef
BOOL
(WINAPI RegisterTouchWindowFunc(
HWND hwnd,
ULONG ulFlags));
// Declared static in order to get Header File clean
static RegisterTouchWindowFunc *registerTouchWindowFunc = NULL;
static CloseTouchInputHandleFunc *closeTouchInputHandleFunc = NULL;
static GetTouchInputInfoFunc *getTouchInputInfoFunc = NULL;
using namespace osgViewer;
namespace osgViewer
@@ -590,6 +662,22 @@ std::string Win32WindowingSystem::osgGraphicsWindowWithoutCursorClass;
Win32WindowingSystem::Win32WindowingSystem()
: _windowClassesRegistered(false)
{
// Detect presence of runtime support for multitouch
HMODULE hModule = LoadLibrary("user32");
if (hModule)
{
registerTouchWindowFunc = (RegisterTouchWindowFunc *) GetProcAddress( hModule, "RegisterTouchWindow");
closeTouchInputHandleFunc = (CloseTouchInputHandleFunc *) GetProcAddress( hModule, "CloseTouchInputHandle");
getTouchInputInfoFunc = (GetTouchInputInfoFunc *) GetProcAddress( hModule, "GetTouchInputInfo");
if (!(registerTouchWindowFunc && closeTouchInputHandleFunc && getTouchInputInfoFunc))
{
registerTouchWindowFunc = NULL;
closeTouchInputHandleFunc = NULL;
getTouchInputInfoFunc = NULL;
FreeLibrary( hModule);
}
}
}
Win32WindowingSystem::~Win32WindowingSystem()
@@ -1207,6 +1295,9 @@ bool GraphicsWindowWin32::createWindow()
}
Win32WindowingSystem::getInterface()->registerWindow(_hwnd, this);
if (registerTouchWindowFunc)
(*registerTouchWindowFunc)( _hwnd, 0);
return true;
}
@@ -2690,6 +2781,51 @@ LRESULT GraphicsWindowWin32::handleNativeWindowingEvent( HWND hwnd, UINT uMsg, W
_closeWindow = true;
return wParam;
//////////////
case WM_TOUCH:
/////////////
{
unsigned int numInputs = (unsigned int) wParam;
TOUCHINPUT* ti = new TOUCHINPUT[numInputs];
osg::ref_ptr<osgGA::GUIEventAdapter> osg_event(NULL);
if(getTouchInputInfoFunc && (*getTouchInputInfoFunc)((HTOUCHINPUT)lParam, numInputs, ti, sizeof(TOUCHINPUT)))
{
// For each contact, dispatch the message to the appropriate message handler.
for(unsigned int i=0; i< numInputs; ++i)
{
if(ti[i].dwFlags & TOUCHEVENTF_DOWN)
{
if (!osg_event) {
osg_event = getEventQueue()->touchBegan( ti[i].dwID, osgGA::GUIEventAdapter::TOUCH_BEGAN, ti[i].x / 100 , ti[i].y/100);
} else {
osg_event->addTouchPoint( ti[i].dwID, osgGA::GUIEventAdapter::TOUCH_BEGAN, ti[i].x / 100, ti[i].y/100);
}
}
else if(ti[i].dwFlags & TOUCHEVENTF_MOVE)
{
if (!osg_event) {
osg_event = getEventQueue()->touchMoved( ti[i].dwID, osgGA::GUIEventAdapter::TOUCH_MOVED, ti[i].x/ 100, ti[i].y/ 100);
} else {
osg_event->addTouchPoint( ti[i].dwID, osgGA::GUIEventAdapter::TOUCH_MOVED, ti[i].x / 100, ti[i].y/100);
}
}
else if(ti[i].dwFlags & TOUCHEVENTF_UP)
{
// No double tap detection with RAW TOUCH Events, sorry.
if (!osg_event) {
osg_event = getEventQueue()->touchEnded( ti[i].dwID, osgGA::GUIEventAdapter::TOUCH_ENDED, ti[i].x/ 100, ti[i].y/ 100, 1);
} else {
osg_event->addTouchPoint( ti[i].dwID, osgGA::GUIEventAdapter::TOUCH_ENDED, ti[i].x / 100, ti[i].y/100);
}
}
}
}
if (closeTouchInputHandleFunc)
(*closeTouchInputHandleFunc)((HTOUCHINPUT)lParam);
delete [] ti;
}
break;
/////////////////
default :
/////////////////