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80 lines
2.2 KiB
80 lines
2.2 KiB
/******************************Module*Header*******************************\
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* Module Name: xlateddi.cxx
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*
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* This provides the interface for device drivers to call functions
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* for xlate objects.
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*
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* Created: 26-Nov-1990 16:40:24
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* Author: Patrick Haluptzok patrickh
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*
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* Copyright (c) 1990 Microsoft Corporation
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\**************************************************************************/
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#include "precomp.hxx"
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/******************************Public*Routine******************************\
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* XLATEOBJ_piVector
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*
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* Returns the translation vector if one exists.
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*
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* History:
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* 03-May-1991 -by- Patrick Haluptzok patrickh
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* Wrote it.
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\**************************************************************************/
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PULONG XLATEOBJ_piVector(XLATEOBJ *pxlo)
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{
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//
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// This is really stupid to have a call back, but the theory was that
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// it could be lazily computed and some drivers would choose to compute
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// it themselves (maybe with hardware help). Anyhow we know of no driver
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// or hardware that would benefit from this so we just compute it up
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// front every time anyhow. Drivers are written to check for NULL first
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// and call this routine if it's NULL.
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//
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return(pxlo->pulXlate);
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}
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/******************************Public*Routine******************************\
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* XLATEOBJ_cGetPalette
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*
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* Used to retrieve information about the palettes used in the blt.
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*
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* History:
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* 03-May-1991 -by- Patrick Haluptzok patrickh
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* Wrote it.
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\**************************************************************************/
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ULONG XLATEOBJ_cGetPalette(
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XLATEOBJ *pxlo,
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ULONG iPal,
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ULONG cPal,
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PULONG ppal)
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{
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ASSERTGDI((iPal == XO_SRCPALETTE) || (XO_DESTPALETTE == iPal), "ERROR XLATEOBJ_cGetPalette passed undefined iPal");
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//
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// Since our global identity xlate is invalid we need to check for
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// this case since drivers can't tell.
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//
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if (pxlo == NULL)
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{
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WARNING("XLATEOBJ_cGetPalette failed - xlate invalid or identiy, no palette informinformation\n");
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return(0);
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}
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XLATE *pxl = (XLATE *) pxlo;
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XEPALOBJ pal((iPal == XO_SRCPALETTE) ? pxl->ppalSrc : pxl->ppalDst);
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if (pal.bValid())
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{
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return(pal.ulGetEntries(0, cPal, (LPPALETTEENTRY) ppal, TRUE));
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}
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else
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{
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return(0);
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}
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}
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