Implementation of SelectPalette and RealizePalette in the metafile

dlls/gdi/mfdrv/init.c

@@ -97,7 +97,7 @@ static const DC_FUNCTIONS MFDRV_Funcs =
     MFDRV_Polyline,                  /* pPolyline */
     NULL,                            /* pPolylineTo */
     NULL,                            /* pRealizeDefaultPalette */
-    NULL,                            /* pRealizePalette */
+    MFDRV_RealizePalette,            /* pRealizePalette */
     MFDRV_Rectangle,                 /* pRectangle */
     NULL,                            /* pResetDC */
     MFDRV_RestoreDC,                 /* pRestoreDC */
@@ -109,7 +109,7 @@ static const DC_FUNCTIONS MFDRV_Funcs =
     MFDRV_SelectBrush,               /* pSelectBrush */
     MFDRV_SelectClipPath,            /* pSelectClipPath */
     MFDRV_SelectFont,                /* pSelectFont */
-    NULL,                            /* pSelectPalette */
+    MFDRV_SelectPalette,             /* pSelectPalette */
     MFDRV_SelectPen,                 /* pSelectPen */
     NULL,                            /* pSetBitmapBits */
     MFDRV_SetBkColor,                /* pSetBkColor */

dlls/gdi/mfdrv/metafiledrv.h

@@ -118,6 +118,8 @@ extern HBRUSH MFDRV_SelectBrush( PHYSDEV dev, HBRUSH handle );
 extern BOOL MFDRV_SelectClipPath( PHYSDEV dev, INT iMode );
 extern HFONT MFDRV_SelectFont( PHYSDEV dev, HFONT handle );
 extern HPEN MFDRV_SelectPen( PHYSDEV dev, HPEN handle );
+extern HPALETTE MFDRV_SelectPalette( PHYSDEV dev, HPALETTE hPalette, BOOL bForceBackground);
+extern UINT MFDRV_RealizePalette(PHYSDEV dev, HPALETTE hPalette, BOOL primary);
 extern COLORREF MFDRV_SetBkColor( PHYSDEV dev, COLORREF color );
 extern INT MFDRV_SetBkMode( PHYSDEV dev, INT mode );
 extern INT MFDRV_SetMapMode( PHYSDEV dev, INT mode );

dlls/gdi/mfdrv/objects.c

@@ -234,3 +234,94 @@ HPEN MFDRV_SelectPen( PHYSDEV dev, HPEN hpen )
     if (MFDRV_CreatePenIndirect( dev, hpen, &logpen )) return hpen;
     return 0;
 }
+
+
+/******************************************************************
+ *         MFDRV_CreatePalette
+ */
+static BOOL MFDRV_CreatePalette(PHYSDEV dev, HPALETTE hPalette, LOGPALETTE* logPalette, int sizeofPalette)
+{
+    int index;
+    BOOL ret;
+    METARECORD *mr;
+
+    mr = HeapAlloc( GetProcessHeap(), 0, sizeof(METARECORD) + sizeofPalette - sizeof(WORD) );
+    mr->rdSize = (sizeof(METARECORD) + sizeofPalette - sizeof(WORD)) / sizeof(WORD);
+    mr->rdFunction = META_CREATEPALETTE;
+    memcpy(&(mr->rdParm), logPalette, sizeofPalette);
+    if (!(MFDRV_WriteRecord( dev, mr, mr->rdSize * sizeof(WORD))))
+    {
+        HeapFree(GetProcessHeap(), 0, mr);
+        return FALSE;
+    }
+
+    mr->rdSize = sizeof(METARECORD) / sizeof(WORD);
+    mr->rdFunction = META_SELECTPALETTE;
+
+    if ((index = MFDRV_AddHandleDC( dev )) == -1) ret = FALSE;
+    else
+    {
+        *(mr->rdParm) = index;
+        ret = MFDRV_WriteRecord( dev, mr, mr->rdSize * sizeof(WORD));
+    }
+    HeapFree(GetProcessHeap(), 0, mr);
+    return ret;
+}
+
+
+/***********************************************************************
+ *           MFDRV_SelectPalette
+ */
+HPALETTE MFDRV_SelectPalette( PHYSDEV dev, HPALETTE hPalette, BOOL bForceBackground )
+{
+#define PALVERSION 0x0300
+
+    PLOGPALETTE logPalette;
+    WORD        wNumEntries = 0;
+    BOOL        creationSucceed;
+    int         sizeofPalette;
+
+    GetObjectA(hPalette, sizeof(WORD), (LPSTR) &wNumEntries);
+
+    if (wNumEntries == 0) return 0;
+
+    sizeofPalette = sizeof(LOGPALETTE) + ((wNumEntries-1) * sizeof(PALETTEENTRY));
+    logPalette = HeapAlloc( GetProcessHeap(), 0, sizeofPalette );
+
+    if (logPalette == NULL) return 0;
+
+    logPalette->palVersion = PALVERSION;
+    logPalette->palNumEntries = wNumEntries;
+
+    GetPaletteEntries(hPalette, 0, wNumEntries, logPalette->palPalEntry);
+
+    creationSucceed = MFDRV_CreatePalette( dev, hPalette, logPalette, sizeofPalette );
+
+    HeapFree( GetProcessHeap(), 0, logPalette );
+
+    if (creationSucceed)
+        return hPalette;
+
+    return 0;
+}
+
+/***********************************************************************
+ *           MFDRV_RealizePalette
+ */
+UINT MFDRV_RealizePalette(PHYSDEV dev, HPALETTE hPalette, BOOL dummy)
+{
+    char buffer[sizeof(METARECORD) - sizeof(WORD)];
+    METARECORD *mr = (METARECORD *)&buffer;
+
+    mr->rdSize = (sizeof(METARECORD) - sizeof(WORD)) / sizeof(WORD);
+    mr->rdFunction = META_REALIZEPALETTE;
+
+    if (!(MFDRV_WriteRecord( dev, mr, mr->rdSize * sizeof(WORD)))) return 0;
+
+    /* The return value is suppose to be the number of entries
+       in the logical palette mapped to the system palette or 0
+       if the function failed. Since it's not trivial here to
+       get that kind of information and since it's of little
+       use in the case of metafiles, we'll always return 1. */
+    return 1;
+}

objects/palette.c

@@ -677,7 +677,7 @@ static BOOL PALETTE_DeleteObject( HGDIOBJ handle, void *obj )
  */
 HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg)
 {
-    HPALETTE prev;
+    HPALETTE ret;
     DC *dc;
 
     TRACE("%p %p\n", hdc, hpal );
@@ -688,11 +688,16 @@ HPALETTE WINAPI GDISelectPalette( HDC hdc, HPALETTE hpal, WORD wBkg)
       return 0;
     }
     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
-    prev = dc->hPalette;
-    dc->hPalette = hpal;
+    ret = dc->hPalette;
+    if (dc->funcs->pSelectPalette) hpal = dc->funcs->pSelectPalette( dc->physDev, hpal, FALSE );
+    if (hpal)
+    {
+        dc->hPalette = hpal;
+        if (!wBkg) hPrimaryPalette = hpal;
+    }
+    else ret = 0;
     GDI_ReleaseObj( hdc );
-    if (!wBkg) hPrimaryPalette = hpal;
-    return prev;
+    return ret;
 }