Dynamically load wintab32.dll

libsdl-org · Aug 26, 2008 · 93c32a5 · 93c32a5
1 parent a8daaa4
commit 93c32a5
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Showing 9 changed files with 60 additions and 11 deletions.
diff --git a/src/video/win32/SDL_win32events.c b/src/video/win32/SDL_win32events.c
@@ -136,7 +136,9 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
     case WT_PACKET:
         {
             /* if we receive such data we need to update the pressure */
-            if (WTPacket((HCTX) lParam, wParam, &packet)) {
+            SDL_VideoData *videodata = data->videodata;
+            if (videodata->wintabDLL
+                && videodata->WTPacket((HCTX) lParam, wParam, &packet)) {
                 SDL_ChangeEnd(tablet, (int) packet.pkCursor);
                 pressure = (int) packet.pkNormalPressure;
             }

diff --git a/src/video/win32/SDL_win32keyboard.c b/src/video/win32/SDL_win32keyboard.c
@@ -55,7 +55,8 @@ WIN_InitKeyboard(_THIS)
     /* Make sure the alpha scancodes are correct.  T isn't usually remapped */
     if (MapVirtualKey('T', MAPVK_VK_TO_VSC) != alpha_scancodes['T' - 'A']) {
 #if 0
-        printf("Fixing alpha scancode map, assuming US QWERTY layout!\nPlease send the following 26 lines of output to the SDL mailing list <sdl@libsdl.org>, including a description of your keyboard hardware.\n");
+        printf
+            ("Fixing alpha scancode map, assuming US QWERTY layout!\nPlease send the following 26 lines of output to the SDL mailing list <sdl@libsdl.org>, including a description of your keyboard hardware.\n");
 #endif
         for (i = 0; i < SDL_arraysize(alpha_scancodes); ++i) {
             alpha_scancodes[i] = MapVirtualKey('A' + i, MAPVK_VK_TO_VSC);
@@ -66,7 +67,8 @@ WIN_InitKeyboard(_THIS)
     }
     if (MapVirtualKey(VK_NUMPAD0, MAPVK_VK_TO_VSC) != keypad_scancodes[0]) {
 #if 0
-        printf("Fixing keypad scancode map!\nPlease send the following 10 lines of output to the SDL mailing list <sdl@libsdl.org>, including a description of your keyboard hardware.\n");
+        printf
+            ("Fixing keypad scancode map!\nPlease send the following 10 lines of output to the SDL mailing list <sdl@libsdl.org>, including a description of your keyboard hardware.\n");
 #endif
         for (i = 0; i < SDL_arraysize(keypad_scancodes); ++i) {
             keypad_scancodes[i] =

diff --git a/src/video/win32/SDL_win32mouse.c b/src/video/win32/SDL_win32mouse.c
@@ -154,7 +154,7 @@ WIN_InitMouse(_THIS)
         l = SDL_strlen(device_name);
 
         /* we're checking if the device isn't by any chance a tablet */
-        if (tablet == -1) {
+        if (data->wintabDLL && tablet == -1) {
             for (j = 0; j < l - 5; ++j) {
                 for (k = 0; k < 5; ++k) {
                     if (tab[k] !=
@@ -173,8 +173,8 @@ WIN_InitMouse(_THIS)
         if (tablet == index) {
             AXIS pressure;
             int cursors;
-            WTInfo(WTI_DEVICES, DVC_NPRESSURE, &pressure);
-            WTInfo(WTI_DEVICES, DVC_NCSRTYPES, &cursors);
+            data->WTInfo(WTI_DEVICES, DVC_NPRESSURE, &pressure);
+            data->WTInfo(WTI_DEVICES, DVC_NCSRTYPES, &cursors);
             data->mouse =
                 SDL_AddMouse(&mouse, index, device_name, pressure.axMax,
                              pressure.axMin, cursors);

diff --git a/src/video/win32/SDL_win32video.c b/src/video/win32/SDL_win32video.c
@@ -60,6 +60,9 @@ WIN_DeleteDevice(SDL_VideoDevice * device)
         FreeLibrary(data->d3dDLL);
     }
 #endif
+    if (data->wintabDLL) {
+        FreeLibrary(data->wintabDLL);
+    }
     SDL_free(device->driverdata);
     SDL_free(device);
 }
@@ -104,6 +107,32 @@ WIN_CreateDevice(int devindex)
     }
 #endif /* SDL_VIDEO_RENDER_D3D */
 
+    data->wintabDLL = LoadLibrary(TEXT("WINTAB32.DLL"));
+    if (data->wintabDLL) {
+#define PROCNAME(X) #X
+        data->WTInfo =
+            (UINT(*)(UINT, UINT, LPVOID)) GetProcAddress(data->wintabDLL,
+                                                         PROCNAME(WTInfo));
+        data->WTOpen =
+            (HCTX(*)(HWND, LPLOGCONTEXT, BOOL)) GetProcAddress(data->
+                                                               wintabDLL,
+                                                               PROCNAME
+                                                               (WTOpen));
+        data->WTPacket =
+            (int (*)(HCTX, UINT, LPVOID)) GetProcAddress(data->wintabDLL,
+                                                         PROCNAME(WTPacket));
+        data->WTClose =
+            (BOOL(*)(HCTX)) GetProcAddress(data->wintabDLL,
+                                           PROCNAME(WTClose));
+#undef PROCNAME
+
+        if (!data->WTInfo || !data->WTOpen || !data->WTPacket
+            || !data->WTClose) {
+            FreeLibrary(data->wintabDLL);
+            data->wintabDLL = NULL;
+        }
+    }
+
     /* Set the function pointers */
     device->VideoInit = WIN_VideoInit;
     device->VideoQuit = WIN_VideoQuit;

diff --git a/src/video/win32/SDL_win32video.h b/src/video/win32/SDL_win32video.h
@@ -66,6 +66,15 @@ typedef struct SDL_VideoData
     HANDLE d3dDLL;
     IDirect3D9 *d3d;
 #endif
+/* *INDENT-OFF* */
+    /* Function pointers for the Wacom API */
+    HANDLE wintabDLL;
+    UINT (*WTInfo) (UINT, UINT, LPVOID);
+    HCTX (*WTOpen) (HWND, LPLOGCONTEXT, BOOL);
+    int (*WTPacket) (HCTX, UINT, LPVOID);
+    BOOL (*WTClose) (HCTX);
+/* *INDENT-ON* */
+
     int mouse;
     int keyboard;
     SDL_scancode *key_layout;

diff --git a/src/video/win32/SDL_win32window.c b/src/video/win32/SDL_win32window.c
@@ -148,6 +148,7 @@ SetupWindowData(_THIS, SDL_Window * window, HWND hwnd, SDL_bool created)
 int
 WIN_CreateWindow(_THIS, SDL_Window * window)
 {
+    SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
     RAWINPUTDEVICE Rid;
     AXIS TabX, TabY;
     LOGCONTEXT lc;
@@ -205,15 +206,15 @@ WIN_CreateWindow(_THIS, SDL_Window * window)
     }
 
     /* we're configuring the tablet data. See Wintab reference for more info */
-    if (WTInfo(WTI_DEFSYSCTX, 0, &lc) != 0) {
+    if (videodata->wintabDLL && videodata->WTInfo(WTI_DEFSYSCTX, 0, &lc) != 0) {
         lc.lcPktData = PACKETDATA;
         lc.lcPktMode = PACKETMODE;
         lc.lcOptions |= CXO_MESSAGES;
         lc.lcOptions |= CXO_SYSTEM;
         lc.lcMoveMask = PACKETDATA;
         lc.lcBtnDnMask = lc.lcBtnUpMask = PACKETDATA;
-        WTInfo(WTI_DEVICES, DVC_X, &TabX);
-        WTInfo(WTI_DEVICES, DVC_Y, &TabY);
+        videodata->WTInfo(WTI_DEVICES, DVC_X, &TabX);
+        videodata->WTInfo(WTI_DEVICES, DVC_Y, &TabY);
         lc.lcInOrgX = 0;
         lc.lcInOrgY = 0;
         lc.lcInExtX = TabX.axMax;
@@ -234,7 +235,7 @@ WIN_CreateWindow(_THIS, SDL_Window * window)
             }
             g_hCtx = tmp_hctx;
         }
-        g_hCtx[window->id] = WTOpen(hwnd, &lc, TRUE);
+        g_hCtx[window->id] = videodata->WTOpen(hwnd, &lc, TRUE);
     }
 
     /* we're telling the window, we want it to report raw input events from mice */
@@ -438,6 +439,7 @@ WIN_SetWindowGrab(_THIS, SDL_Window * window)
 void
 WIN_DestroyWindow(_THIS, SDL_Window * window)
 {
+    SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
     SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
 
     if (data) {
@@ -448,7 +450,9 @@ WIN_DestroyWindow(_THIS, SDL_Window * window)
 #endif
         ReleaseDC(data->hwnd, data->hdc);
         if (data->created) {
-            WTClose(g_hCtx[window->id]);
+            if (videodata->wintabDLL) {
+                videodata->WTClose(g_hCtx[window->id]);
+            }
             DestroyWindow(data->hwnd);
         }
         SDL_free(data);

diff --git a/src/video/win32/wactab/pktdef.h b/src/video/win32/wactab/pktdef.h
@@ -1,3 +1,4 @@
+/* *INDENT-OFF* */
 /* -------------------------------- pktdef.h -------------------------------- */
 /* Combined 16 & 32-bit version. */
 

diff --git a/src/video/win32/wactab/wintab.h b/src/video/win32/wactab/wintab.h
@@ -1,3 +1,4 @@
+/* *INDENT-OFF* */
 /* -------------------------------- wintab.h -------------------------------- */
 /* Combined 16 & 32-bit version. */
 

diff --git a/src/video/win32/wactab/wintabx.h b/src/video/win32/wactab/wintabx.h
@@ -1,3 +1,4 @@
+/* *INDENT-OFF* */
 /* ------------------------------- wintabx.h -------------------------------- */
 /* Combined 16 & 32-bit version. */