[WIN32K]

Implement NtGdiGetFontData /  PFE_ulQueryTrueTypeTable

svn path=/branches/GSoC_2011/GdiFontDriver/; revision=56062

Author: tkreuzer

win32ss/gdi/font/fntdrvsup.c

@@ -51,22 +51,6 @@ DetachCSRSS(KAPC_STATE *pApcState)
     gbAttachedCSRSS = FALSE;
 }
 
-VOID
-NTAPI
-RFONT_vInitDeviceMetrics(
-    PRFONT prfnt)
-{
-    PPDEVOBJ ppdev = (PPDEVOBJ)prfnt->hdevProducer;
-
-    ppdev->pldev->pfn.QueryFontData(prfnt->dhpdev,
-                                    &prfnt->fobj,
-                                    QFD_MAXEXTENTS,
-                                    -1,
-                                    NULL,
-                                    &prfnt->fddm,
-                                    sizeof(FD_DEVICEMETRICS));
-}
-
 static
 VOID
 PFE_vInitialize(
@@ -114,6 +98,40 @@ PFE_vInitialize(
 
 }
 
+ULONG
+NTAPI
+PFE_ulQueryTrueTypeTable(
+    PPFE ppfe,
+    ULONG ulTableTag,
+    PTRDIFF dpStart,
+    ULONG cjBuffer,
+    PVOID pvBuffer)
+{
+    PPDEVOBJ ppdev = (PDEVOBJ*)ppfe->pPFF->hdev;
+    KAPC_STATE ApcState;
+    ULONG ulResult;
+
+    /* Attach to CSRSS */
+    AttachCSRSS(&ApcState);
+
+    /* Call the driver to copy the requested data */
+    ulResult = ppdev->pfn.QueryTrueTypeTable(ppfe->pPFF->hff,
+                                             ppfe->iFont,
+                                             ulTableTag,
+                                             dpStart,
+                                             cjBuffer,
+                                             pvBuffer,
+                                             NULL,
+                                             NULL);
+
+    /* Detach from CSRSS */
+    DetachCSRSS(&ApcState);
+
+    /* Return the result */
+    return ulResult;
+}
+
+
 static
 VOID
 CopyFileName(

win32ss/gdi/font/font.h

@@ -392,6 +392,12 @@ PPFE
 NTAPI
 LFONT_ppfe(PLFONT plfnt);
 
+PRFONT
+NTAPI
+LFONT_prfntFindLinkedRFONT(
+    _In_ PLFONT plfnt,
+    _In_ PMATRIX pmxWorldToDevice);
+
 VOID
 NTAPI
 UpcaseString(
@@ -404,6 +410,15 @@ NTAPI
 CalculateNameHash(
     PWSTR pwszName);
 
+ULONG
+NTAPI
+PFE_ulQueryTrueTypeTable(
+    PPFE ppfe,
+    ULONG ulTableTag,
+    PTRDIFF dpStart,
+    ULONG cjBuffer,
+    PVOID pvBuffer);
+
 BOOL
 NTAPI
 PFT_bInit(

win32ss/gdi/font/fontdata.c

@@ -18,11 +18,75 @@ NtGdiGetFontData(
     IN HDC hdc,
     IN DWORD dwTable,
     IN DWORD dwOffset,
-    OUT OPTIONAL PVOID pvBuf,
-    IN ULONG cjBuf)
+    OUT OPTIONAL PVOID pvBuffer,
+    IN ULONG cjBuffer)
 {
-    ASSERT(FALSE);
-    return 0;
+    PDC pdc;
+    PRFONT prfnt;
+    PVOID pvTempBuffer;
+    ULONG ulResult;
+
+    /* Check if the caller provides a buffer */
+    if (cjBuffer)
+    {
+        /* Must have a buffer */
+        if (!pvBuffer) return GDI_ERROR;
+
+        /* Allocate a temp buffer */
+        pvTempBuffer = ExAllocatePoolWithTag(PagedPool, cjBuffer, GDITAG_TEMP);
+        if (!pvTempBuffer)
+        {
+            return GDI_ERROR;
+        }
+    }
+    else
+    {
+        /* Don't provide a buffer */
+        pvTempBuffer = NULL;
+    }
+
+    /* Lock the DC */
+    pdc = DC_LockDc(hdc);
+    if (!pdc)
+    {
+        ulResult = GDI_ERROR;
+        goto leave;
+    }
+
+    /* Get the RFONT from the DC */
+    prfnt = DC_prfnt(pdc);
+
+    /* Query the table data */
+    ulResult = PFE_ulQueryTrueTypeTable(prfnt->ppfe,
+                                        dwTable,
+                                        dwOffset,
+                                        cjBuffer,
+                                        pvTempBuffer);
+
+    /* Copy the data back, if requested */
+    if (cjBuffer && (ulResult != GDI_ERROR))
+    {
+        _SEH2_TRY
+        {
+            /* Probe and copy the data */
+            ProbeForWrite(pvBuffer, cjBuffer, 1);
+            RtlCopyMemory(pvBuffer, pvTempBuffer, cjBuffer);
+        }
+        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+        {
+            ulResult = GDI_ERROR;
+        }
+        _SEH2_END;
+    }
+
+    /* Unlock the DC */
+    DC_UnlockDc(pdc);
+
+leave:
+    /* Free the temp buffer */
+    if (pvTempBuffer) ExFreePoolWithTag(pvTempBuffer, GDITAG_TEMP);
+
+    return ulResult;
 }
 
 W32KAPI