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 "winreg.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "winerror.h"
  29 #define NOFIX32
  30 #include "wintab.h"
  31 #include "wintab_internal.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 static HMODULE load_graphics_driver(void)
  75 {
  76     static const WCHAR display_device_guid_propW[] = {
  77         '_','_','w','i','n','e','_','d','i','s','p','l','a','y','_',
  78         'd','e','v','i','c','e','_','g','u','i','d',0 };
  79     static const WCHAR key_pathW[] = {
  80         'S','y','s','t','e','m','\\',
  81         'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
  82         'C','o','n','t','r','o','l','\\',
  83         'V','i','d','e','o','\\','{',0};
  84     static const WCHAR displayW[] = {'}','\\','0','0','0','0',0};
  85     static const WCHAR driverW[] = {'G','r','a','p','h','i','c','s','D','r','i','v','e','r',0};
  86
  87     HMODULE ret = 0;
  88     HKEY hkey;
  89     DWORD size;
  90     WCHAR path[MAX_PATH];
  91     WCHAR key[ARRAY_SIZE(key_pathW) + ARRAY_SIZE(displayW) + 40];
  92     UINT guid_atom = HandleToULong( GetPropW( GetDesktopWindow(), display_device_guid_propW ));
  93
  94     if (!guid_atom) return 0;
  95     memcpy( key, key_pathW, sizeof(key_pathW) );
  96     if (!GlobalGetAtomNameW( guid_atom, key + lstrlenW(key), 40 )) return 0;
  97     lstrcatW( key, displayW );
  98     if (RegOpenKeyW( HKEY_LOCAL_MACHINE, key, &hkey )) return 0;
  99     size = sizeof(path);
 100     if (!RegQueryValueExW( hkey, driverW, NULL, NULL, (BYTE *)path, &size )) ret = LoadLibraryW( path );
 101     RegCloseKey( hkey );
 102     TRACE( "%s %p\n", debugstr_w(path), ret );
 103     return ret;
 104 }
 105
 106 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
 107 {
 108     static const WCHAR name[] = {'T','a','b','l','e','t',0};
 109
 110     TRACE("%p, %x, %p\n",hInstDLL,fdwReason,lpReserved);
 111     switch (fdwReason)
 112     {
 113         case DLL_PROCESS_ATTACH:
 114             TRACE("Initialization\n");
 115             DisableThreadLibraryCalls(hInstDLL);
 116             TABLET_Register();
 117             hwndDefault = CreateWindowW(WC_TABLETCLASSNAME, name,
 118                                         WS_POPUPWINDOW,0,0,0,0,0,0,hInstDLL,0);
 119             if (hwndDefault)
 120             {
 121                 HMODULE module = load_graphics_driver();
 122                 pLoadTabletInfo = (void *)GetProcAddress(module, "LoadTabletInfo");
 123                 pAttachEventQueueToTablet = (void *)GetProcAddress(module, "AttachEventQueueToTablet");
 124                 pGetCurrentPacket = (void *)GetProcAddress(module, "GetCurrentPacket");
 125                 pWTInfoW = (void *)GetProcAddress(module, "WTInfoW");
 126             }
 127             else
 128                 return FALSE;
 129             break;
 130         case DLL_PROCESS_DETACH:
 131             if (lpReserved) break;
 132             TRACE("Detaching\n");
 133             if (hwndDefault) DestroyWindow(hwndDefault);
 134             TABLET_Unregister();
 135             DeleteCriticalSection(&csTablet);
 136             break;
 137     }
 138     return TRUE;
 139 }
 140
 141
 142 /*
 143  * The window proc for the default TABLET window
 144  */
 145 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
 146                                           LPARAM lParam)
 147 {
 148     TRACE("Incoming Message 0x%x  (0x%08x, 0x%08x)\n", uMsg, (UINT)wParam,
 149            (UINT)lParam);
 150
 151     switch(uMsg)
 152     {
 153         case WM_NCCREATE:
 154             return TRUE;
 155
 156         case WT_PACKET:
 157             {
 158                 WTPACKET packet;
 159                 LPOPENCONTEXT handler;
 160                 if (pGetCurrentPacket)
 161                 {
 162                     pGetCurrentPacket(&packet);
 163                     handler = AddPacketToContextQueue(&packet,(HWND)lParam);
 164                     if (handler && handler->context.lcOptions & CXO_MESSAGES)
 165                        TABLET_PostTabletMessage(handler, _WT_PACKET(handler->context.lcMsgBase),
 166                                    (WPARAM)packet.pkSerialNumber,
 167                                    (LPARAM)handler->handle, FALSE);
 168                 }
 169                 break;
 170             }
 171         case WT_PROXIMITY:
 172             {
 173                 WTPACKET packet;
 174                 LPOPENCONTEXT handler;
 175                 if (pGetCurrentPacket)
 176                 {
 177                     pGetCurrentPacket(&packet);
 178                     handler = AddPacketToContextQueue(&packet,(HWND)wParam);
 179                     if (handler)
 180                         TABLET_PostTabletMessage(handler, WT_PROXIMITY,
 181                                                 (WPARAM)handler->handle, lParam, TRUE);
 182                 }
 183                 break;
 184             }
 185     }
 186     return 0;
 187 }