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 #include "wintab.h"
  29 #include "wintab_internal.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(wintab32);
  33
  34 HWND hwndDefault = NULL;
  35 static const WCHAR
  36   WC_TABLETCLASSNAME[] = {'W','i','n','e','T','a','b','l','e','t','C','l','a','s','s',0};
  37 static CRITICAL_SECTION_DEBUG csTablet_debug =
  38 {
  39     0, 0, &csTablet,
  40     { &csTablet_debug.ProcessLocksList, &csTablet_debug.ProcessLocksList },
  41       0, 0, { (DWORD_PTR)(__FILE__ ": csTablet") }
  42 };
  43 CRITICAL_SECTION csTablet = { &csTablet_debug, -1, 0, 0, 0, 0 };
  44
  45 int  (CDECL *pLoadTabletInfo)(HWND hwnddefault) = NULL;
  46 int  (CDECL *pGetCurrentPacket)(LPWTPACKET packet) = NULL;
  47 int  (CDECL *pAttachEventQueueToTablet)(HWND hOwner) = NULL;
  48 UINT (CDECL *pWTInfoW)(UINT wCategory, UINT nIndex, LPVOID lpOutput) = NULL;
  49
  50 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
  51                                           LPARAM lParam);
  52
  53 static VOID TABLET_Register(void)
  54 {
  55     WNDCLASSW wndClass;
  56     ZeroMemory(&wndClass, sizeof(WNDCLASSW));
  57     wndClass.style = CS_GLOBALCLASS;
  58     wndClass.lpfnWndProc = TABLET_WindowProc;
  59     wndClass.cbClsExtra = 0;
  60     wndClass.cbWndExtra = 0;
  61     wndClass.hCursor = NULL;
  62     wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW +1);
  63     wndClass.lpszClassName = WC_TABLETCLASSNAME;
  64     RegisterClassW(&wndClass);
  65 }
  66
  67 static VOID TABLET_Unregister(void)
  68 {
  69     UnregisterClassW(WC_TABLETCLASSNAME, NULL);
  70 }
  71
  72 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
  73 {
  74     static const WCHAR name[] = {'T','a','b','l','e','t',0};
  75     HMODULE hx11drv;
  76
  77     TRACE("%p, %x, %p\n",hInstDLL,fdwReason,lpReserved);
  78     switch (fdwReason)
  79     {
  80         case DLL_PROCESS_ATTACH:
  81             TRACE("Initialization\n");
  82             DisableThreadLibraryCalls(hInstDLL);
  83             hx11drv = GetModuleHandleA("winex11.drv");
  84             if (hx11drv)
  85             {
  86                 pLoadTabletInfo = (void *)GetProcAddress(hx11drv, "LoadTabletInfo");
  87                 pAttachEventQueueToTablet = (void *)GetProcAddress(hx11drv, "AttachEventQueueToTablet");
  88                 pGetCurrentPacket = (void *)GetProcAddress(hx11drv, "GetCurrentPacket");
  89                 pWTInfoW = (void *)GetProcAddress(hx11drv, "WTInfoW");
  90                 TABLET_Register();
  91                 hwndDefault = CreateWindowW(WC_TABLETCLASSNAME, name,
  92                                 WS_POPUPWINDOW,0,0,0,0,0,0,hInstDLL,0);
  93             }
  94             else
  95                 return FALSE;
  96             break;
  97         case DLL_PROCESS_DETACH:
  98             TRACE("Detaching\n");
  99             if (hwndDefault)
 100             {
 101                 DestroyWindow(hwndDefault);
 102                 hwndDefault = 0;
 103             }
 104             TABLET_Unregister();
 105             DeleteCriticalSection(&csTablet);
 106             break;
 107     }
 108     return TRUE;
 109 }
 110
 111
 112 /*
 113  * The window proc for the default TABLET window
 114  */
 115 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
 116                                           LPARAM lParam)
 117 {
 118     TRACE("Incoming Message 0x%x  (0x%08x, 0x%08x)\n", uMsg, (UINT)wParam,
 119            (UINT)lParam);
 120
 121     switch(uMsg)
 122     {
 123         case WM_NCCREATE:
 124             return TRUE;
 125
 126         case WT_PACKET:
 127             {
 128                 WTPACKET packet;
 129                 LPOPENCONTEXT handler;
 130                 if (pGetCurrentPacket)
 131                 {
 132                     pGetCurrentPacket(&packet);
 133                     handler = AddPacketToContextQueue(&packet,(HWND)lParam);
 134                     if (handler && handler->context.lcOptions & CXO_MESSAGES)
 135                        TABLET_PostTabletMessage(handler, _WT_PACKET(handler->context.lcMsgBase),
 136                                    (WPARAM)packet.pkSerialNumber,
 137                                    (LPARAM)handler->handle, FALSE);
 138                 }
 139                 break;
 140             }
 141         case WT_PROXIMITY:
 142             {
 143                 WTPACKET packet;
 144                 LPOPENCONTEXT handler;
 145                 if (pGetCurrentPacket)
 146                 {
 147                     pGetCurrentPacket(&packet);
 148                     handler = AddPacketToContextQueue(&packet,(HWND)wParam);
 149                     if (handler)
 150                         TABLET_PostTabletMessage(handler, WT_PROXIMITY,
 151                                                 (WPARAM)handler->handle, lParam, TRUE);
 152                 }
 153                 break;
 154             }
 155     }
 156     return 0;
 157 }