dlls/wintab32/wintab32.c

   1 /*
   2  * WinTab32 library
   3  *
   4  * Copyright 2003 CodeWeavers, Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "winuser.h"
  27 #include "winerror.h"
  28 #define NOFIX32
  29 #include "wintab.h"
  30 #include "wintab_internal.h"
  31 #include "wine/gdi_driver.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(wintab32);
  35
  36 HWND hwndDefault = NULL;
  37 static const WCHAR
  38   WC_TABLETCLASSNAME[] = {'W','i','n','e','T','a','b','l','e','t','C','l','a','s','s',0};
  39 static CRITICAL_SECTION_DEBUG csTablet_debug =
  40 {
  41     0, 0, &csTablet,
  42     { &csTablet_debug.ProcessLocksList, &csTablet_debug.ProcessLocksList },
  43       0, 0, { (DWORD_PTR)(__FILE__ ": csTablet") }
  44 };
  45 CRITICAL_SECTION csTablet = { &csTablet_debug, -1, 0, 0, 0, 0 };
  46
  47 int  (CDECL *pLoadTabletInfo)(HWND hwnddefault) = NULL;
  48 int  (CDECL *pGetCurrentPacket)(LPWTPACKET packet) = NULL;
  49 int  (CDECL *pAttachEventQueueToTablet)(HWND hOwner) = NULL;
  50 UINT (CDECL *pWTInfoW)(UINT wCategory, UINT nIndex, LPVOID lpOutput) = NULL;
  51
  52 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
  53                                           LPARAM lParam);
  54
  55 static VOID TABLET_Register(void)
  56 {
  57     WNDCLASSW wndClass;
  58     ZeroMemory(&wndClass, sizeof(WNDCLASSW));
  59     wndClass.style = CS_GLOBALCLASS;
  60     wndClass.lpfnWndProc = TABLET_WindowProc;
  61     wndClass.cbClsExtra = 0;
  62     wndClass.cbWndExtra = 0;
  63     wndClass.hCursor = NULL;
  64     wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW +1);
  65     wndClass.lpszClassName = WC_TABLETCLASSNAME;
  66     RegisterClassW(&wndClass);
  67 }
  68
  69 static VOID TABLET_Unregister(void)
  70 {
  71     UnregisterClassW(WC_TABLETCLASSNAME, NULL);
  72 }
  73
  74 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
  75 {
  76     static const WCHAR name[] = {'T','a','b','l','e','t',0};
  77
  78     TRACE("%p, %x, %p\n",hInstDLL,fdwReason,lpReserved);
  79     switch (fdwReason)
  80     {
  81         case DLL_PROCESS_ATTACH:
  82             TRACE("Initialization\n");
  83             DisableThreadLibraryCalls(hInstDLL);
  84             TABLET_Register();
  85             hwndDefault = CreateWindowW(WC_TABLETCLASSNAME, name,
  86                                         WS_POPUPWINDOW,0,0,0,0,0,0,hInstDLL,0);
  87             if (hwndDefault)
  88             {
  89                 HDC hdc = GetDC( hwndDefault );
  90                 HMODULE module = __wine_get_driver_module( hdc );
  91
  92                 pLoadTabletInfo = (void *)GetProcAddress(module, "LoadTabletInfo");
  93                 pAttachEventQueueToTablet = (void *)GetProcAddress(module, "AttachEventQueueToTablet");
  94                 pGetCurrentPacket = (void *)GetProcAddress(module, "GetCurrentPacket");
  95                 pWTInfoW = (void *)GetProcAddress(module, "WTInfoW");
  96                 ReleaseDC( hwndDefault, hdc );
  97             }
  98             else
  99                 return FALSE;
 100             break;
 101         case DLL_PROCESS_DETACH:
 102             if (lpReserved) break;
 103             TRACE("Detaching\n");
 104             if (hwndDefault) DestroyWindow(hwndDefault);
 105             TABLET_Unregister();
 106             DeleteCriticalSection(&csTablet);
 107             break;
 108     }
 109     return TRUE;
 110 }
 111
 112
 113 /*
 114  * The window proc for the default TABLET window
 115  */
 116 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
 117                                           LPARAM lParam)
 118 {
 119     TRACE("Incoming Message 0x%x  (0x%08x, 0x%08x)\n", uMsg, (UINT)wParam,
 120            (UINT)lParam);
 121
 122     switch(uMsg)
 123     {
 124         case WM_NCCREATE:
 125             return TRUE;
 126
 127         case WT_PACKET:
 128             {
 129                 WTPACKET packet;
 130                 LPOPENCONTEXT handler;
 131                 if (pGetCurrentPacket)
 132                 {
 133                     pGetCurrentPacket(&packet);
 134                     handler = AddPacketToContextQueue(&packet,(HWND)lParam);
 135                     if (handler && handler->context.lcOptions & CXO_MESSAGES)
 136                        TABLET_PostTabletMessage(handler, _WT_PACKET(handler->context.lcMsgBase),
 137                                    (WPARAM)packet.pkSerialNumber,
 138                                    (LPARAM)handler->handle, FALSE);
 139                 }
 140                 break;
 141             }
 142         case WT_PROXIMITY:
 143             {
 144                 WTPACKET packet;
 145                 LPOPENCONTEXT handler;
 146                 if (pGetCurrentPacket)
 147                 {
 148                     pGetCurrentPacket(&packet);
 149                     handler = AddPacketToContextQueue(&packet,(HWND)wParam);
 150                     if (handler)
 151                         TABLET_PostTabletMessage(handler, WT_PROXIMITY,
 152                                                 (WPARAM)handler->handle, lParam, TRUE);
 153                 }
 154                 break;
 155             }
 156     }
 157     return 0;
 158 }