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 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 = L"WineTabletClass";
  64     RegisterClassW(&wndClass);
  65 }
  66
  67 static VOID TABLET_Unregister(void)
  68 {
  69     UnregisterClassW(L"WineTabletClass", NULL);
  70 }
  71
  72 static HMODULE load_graphics_driver(void)
  73 {
  74     static const WCHAR key_pathW[] = L"System\\CurrentControlSet\\Control\\Video\\{";
  75     static const WCHAR displayW[] = L"}\\0000";
  76
  77     HMODULE ret = 0;
  78     HKEY hkey;
  79     DWORD size;
  80     WCHAR path[MAX_PATH];
  81     WCHAR key[ARRAY_SIZE(key_pathW) + ARRAY_SIZE(displayW) + 40];
  82     UINT guid_atom = HandleToULong( GetPropW( GetDesktopWindow(), L"__wine_display_device_guid" ));
  83
  84     if (!guid_atom) return 0;
  85     memcpy( key, key_pathW, sizeof(key_pathW) );
  86     if (!GlobalGetAtomNameW( guid_atom, key + lstrlenW(key), 40 )) return 0;
  87     lstrcatW( key, displayW );
  88     if (RegOpenKeyW( HKEY_LOCAL_MACHINE, key, &hkey )) return 0;
  89     size = sizeof(path);
  90     if (!RegQueryValueExW( hkey, L"GraphicsDriver", NULL, NULL, (BYTE *)path, &size )) ret = LoadLibraryW( path );
  91     RegCloseKey( hkey );
  92     TRACE( "%s %p\n", debugstr_w(path), ret );
  93     return ret;
  94 }
  95
  96 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
  97 {
  98     TRACE("%p, %lx, %p\n",hInstDLL,fdwReason,lpReserved);
  99     switch (fdwReason)
 100     {
 101         case DLL_PROCESS_ATTACH:
 102             TRACE("Initialization\n");
 103             DisableThreadLibraryCalls(hInstDLL);
 104             TABLET_Register();
 105             hwndDefault = CreateWindowW(L"WineTabletClass", L"Tablet",
 106                                         WS_POPUPWINDOW,0,0,0,0,0,0,hInstDLL,0);
 107             if (hwndDefault)
 108             {
 109                 HMODULE module = load_graphics_driver();
 110                 pLoadTabletInfo = (void *)GetProcAddress(module, "LoadTabletInfo");
 111                 pAttachEventQueueToTablet = (void *)GetProcAddress(module, "AttachEventQueueToTablet");
 112                 pGetCurrentPacket = (void *)GetProcAddress(module, "GetCurrentPacket");
 113                 pWTInfoW = (void *)GetProcAddress(module, "WTInfoW");
 114             }
 115             else
 116                 return FALSE;
 117             break;
 118         case DLL_PROCESS_DETACH:
 119             if (lpReserved) break;
 120             TRACE("Detaching\n");
 121             if (hwndDefault) DestroyWindow(hwndDefault);
 122             TABLET_Unregister();
 123             DeleteCriticalSection(&csTablet);
 124             break;
 125     }
 126     return TRUE;
 127 }
 128
 129
 130 /*
 131  * The window proc for the default TABLET window
 132  */
 133 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
 134                                           LPARAM lParam)
 135 {
 136     TRACE("Incoming Message 0x%x  (0x%08x, 0x%08x)\n", uMsg, (UINT)wParam,
 137            (UINT)lParam);
 138
 139     switch(uMsg)
 140     {
 141         case WM_NCCREATE:
 142             return TRUE;
 143
 144         case WT_PACKET:
 145             {
 146                 WTPACKET packet;
 147                 LPOPENCONTEXT handler;
 148                 if (pGetCurrentPacket)
 149                 {
 150                     pGetCurrentPacket(&packet);
 151                     handler = AddPacketToContextQueue(&packet,(HWND)lParam);
 152                     if (handler && handler->context.lcOptions & CXO_MESSAGES)
 153                        TABLET_PostTabletMessage(handler, _WT_PACKET(handler->context.lcMsgBase),
 154                                    (WPARAM)packet.pkSerialNumber,
 155                                    (LPARAM)handler->handle, FALSE);
 156                 }
 157                 break;
 158             }
 159         case WT_PROXIMITY:
 160             {
 161                 WTPACKET packet;
 162                 LPOPENCONTEXT handler;
 163                 if (pGetCurrentPacket)
 164                 {
 165                     pGetCurrentPacket(&packet);
 166                     handler = AddPacketToContextQueue(&packet,(HWND)wParam);
 167                     if (handler)
 168                         TABLET_PostTabletMessage(handler, WT_PROXIMITY,
 169                                                 (WPARAM)handler->handle, lParam, TRUE);
 170                 }
 171                 break;
 172             }
 173     }
 174     return 0;
 175 }