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// safe & friendly WinTab wrapper
// by Mike Erwin, July 2010
#ifndef GHOST_TABLET_MANAGER_WIN32_H
#define GHOST_TABLET_MANAGER_WIN32_H
#define _WIN32_WINNT 0x501 // require Windows XP or newer
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include "wintab.h"
#include <map>
class GHOST_WindowWin32;
// BEGIN from Wacom's Utils.h
typedef UINT ( API * WTINFOA ) ( UINT, UINT, LPVOID );
typedef HCTX ( API * WTOPENA ) ( HWND, LPLOGCONTEXTA, BOOL );
typedef BOOL ( API * WTCLOSE ) ( HCTX );
typedef BOOL ( API * WTQUEUESIZESET ) ( HCTX, int );
typedef int ( API * WTPACKETSGET ) ( HCTX, int, LPVOID );
typedef BOOL ( API * WTPACKET ) ( HCTX, UINT, LPVOID );
// END
typedef enum { TABLET_NONE, TABLET_PEN, TABLET_ERASER, TABLET_MOUSE } TabletToolType;
typedef struct
{
TabletToolType type : 4; // plenty of room to grow
// capabilities
bool hasPressure : 1;
bool hasTilt : 1;
} TabletTool;
typedef struct
{
TabletTool tool;
float pressure;
float tilt_x, tilt_y;
} TabletToolData;
class GHOST_TabletManagerWin32
{
// the Wintab library
HMODULE lib_Wintab;
// WinTab function pointers
WTOPENA func_Open;
WTCLOSE func_Close;
WTINFOA func_Info;
WTQUEUESIZESET func_QueueSizeSet;
WTPACKETSGET func_PacketsGet;
WTPACKET func_Packet;
// tablet attributes
bool hasPressure;
float pressureScale;
bool hasTilt;
float azimuthScale;
float altitudeScale;
// float tiltScaleX;
// float tiltScaleY;
// UINT tiltMask;
UINT cursorCount;
UINT cursorBase;
// candidate for a base class:
TabletTool activeTool;
int prevMouseX;
int prevMouseY;
// book-keeping
std::map<GHOST_WindowWin32*,HCTX> contexts;
HCTX contextForWindow(GHOST_WindowWin32*);
void convertTilt(ORIENTATION const&, TabletToolData&);
public:
GHOST_TabletManagerWin32();
~GHOST_TabletManagerWin32();
bool available(); // another base class candidate
void openForWindow(GHOST_WindowWin32*);
void closeForWindow(GHOST_WindowWin32*);
void processPackets(GHOST_WindowWin32*);
void changeTool(HCTX, UINT serialNumber);
void dropTool();
};
/*
The tablet manager is driven by the following Windows event processing code:
case WT_PACKET:
m_tabletManager->processPackets((HCTX)lParam);
break;
case WT_CSRCHANGE:
m_tabletManager->changeTool((HCTX)lParam, wParam);
break;
case WT_PROXIMITY:
if (LOWORD(lParam) == 0)
{
puts("-- dropping tool --");
m_tabletManager->dropTool();
}
break;
*/
#endif
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