HSURF
APIENTRY
EngCreateDeviceSurface(
_In_ DHSURF dhsurf,
_In_ SIZEL sizl,
_In_ ULONG iFormat)
{
PSURFACE psurf;
HSURF hsurf;
/* Allocate a surface */
psurf = SURFACE_AllocSurface(STYPE_DEVICE,
sizl.cx,
sizl.cy,
iFormat,
0,
0,
0,
NULL);
if (!psurf)
{
DPRINT1("SURFACE_AllocSurface failed.\n");
return NULL;
}
/* Set the device handle */
psurf->SurfObj.dhsurf = dhsurf;
/* Set public ownership */
GDIOBJ_vSetObjectOwner(&psurf->BaseObject, GDI_OBJ_HMGR_PUBLIC);
/* Get the handle for the surface */
hsurf = psurf->SurfObj.hsurf;
/* Unlock the surface and return */
SURFACE_UnlockSurface(psurf);
return hsurf;
}
HBITMAP
APIENTRY
EngCreateBitmap(
_In_ SIZEL sizl,
_In_ LONG lWidth,
_In_ ULONG iFormat,
_In_ ULONG fl,
_In_opt_ PVOID pvBits)
{
PSURFACE psurf;
HBITMAP hbmp;
/* Allocate a surface */
psurf = SURFACE_AllocSurface(STYPE_BITMAP,
sizl.cx,
sizl.cy,
iFormat,
fl,
lWidth,
0,
pvBits);
if (!psurf)
{
DPRINT1("SURFACE_AllocSurface failed.\n");
return NULL;
}
/* Get the handle for the bitmap */
hbmp = (HBITMAP)psurf->SurfObj.hsurf;
/* Set public ownership */
GDIOBJ_vSetObjectOwner(&psurf->BaseObject, GDI_OBJ_HMGR_PUBLIC);
/* Unlock the surface and return */
SURFACE_UnlockSurface(psurf);
return hbmp;
}
HBITMAP
NTAPI
GreCreateBitmapEx(
_In_ ULONG nWidth,
_In_ ULONG nHeight,
_In_ ULONG cjWidthBytes,
_In_ ULONG iFormat,
_In_ USHORT fjBitmap,
_In_ ULONG cjSizeImage,
_In_opt_ PVOID pvBits,
_In_ FLONG flags)
{
PSURFACE psurf;
HBITMAP hbmp;
PVOID pvCompressedBits = NULL;
/* Verify format */
if (iFormat < BMF_1BPP || iFormat > BMF_PNG) return NULL;
/* The infamous RLE hack */
if ((iFormat == BMF_4RLE) || (iFormat == BMF_8RLE))
{
pvCompressedBits = pvBits;
pvBits = NULL;
iFormat = (iFormat == BMF_4RLE) ? BMF_4BPP : BMF_8BPP;
}
/* Allocate a surface */
psurf = SURFACE_AllocSurface(STYPE_BITMAP,
nWidth,
nHeight,
iFormat,
fjBitmap,
cjWidthBytes,
pvBits);
if (!psurf)
{
DPRINT1("SURFACE_AllocSurface failed.\n");
return NULL;
}
/* The infamous RLE hack */
if (pvCompressedBits)
{
SIZEL sizl;
LONG lDelta;
sizl.cx = nWidth;
sizl.cy = nHeight;
lDelta = WIDTH_BYTES_ALIGN32(nWidth, gajBitsPerFormat[iFormat]);
pvBits = psurf->SurfObj.pvBits;
DecompressBitmap(sizl, pvCompressedBits, pvBits, lDelta, iFormat);
}
/* Get the handle for the bitmap */
hbmp = (HBITMAP)psurf->SurfObj.hsurf;
/* Mark as API bitmap */
psurf->flags |= (flags | API_BITMAP);
/* Unlock the surface and return */
SURFACE_UnlockSurface(psurf);
return hbmp;
}
HBITMAP
APIENTRY
NtGdiCreateBitmap(
IN INT nWidth,
IN INT nHeight,
IN UINT cPlanes,
IN UINT cBitsPixel,
IN OPTIONAL LPBYTE pUnsafeBits)
{
HBITMAP hbmp;
ULONG cRealBpp, cjWidthBytes, iFormat;
ULONGLONG cjSize;
PSURFACE psurf;
/* Calculate bitmap format and real bits per pixel. */
iFormat = BitmapFormat(cBitsPixel * cPlanes, BI_RGB);
cRealBpp = gajBitsPerFormat[iFormat];
/* Calculate width and image size in bytes */
cjWidthBytes = WIDTH_BYTES_ALIGN16(nWidth, cRealBpp);
cjSize = (ULONGLONG)cjWidthBytes * nHeight;
/* Check parameters (possible overflow of cjSize!) */
if ((iFormat == 0) || (nWidth <= 0) || (nWidth >= 0x8000000) || (nHeight <= 0) ||
(cBitsPixel > 32) || (cPlanes > 32) || (cjSize >= 0x100000000ULL))
{
DPRINT1("Invalid bitmap format! Width=%d, Height=%d, Bpp=%u, Planes=%u\n",
nWidth, nHeight, cBitsPixel, cPlanes);
EngSetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
/* Allocate the surface (but don't set the bits) */
psurf = SURFACE_AllocSurface(STYPE_BITMAP,
nWidth,
nHeight,
iFormat,
0,
0,
NULL);
if (!psurf)
{
DPRINT1("SURFACE_AllocSurface failed.\n");
return NULL;
}
/* Mark as API and DDB bitmap */
psurf->flags |= (API_BITMAP | DDB_SURFACE);
/* Check if we have bits to set */
if (pUnsafeBits)
{
/* Protect with SEH and copy the bits */
_SEH2_TRY
{
ProbeForRead(pUnsafeBits, (SIZE_T)cjSize, 1);
UnsafeSetBitmapBits(psurf, 0, pUnsafeBits);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
GDIOBJ_vDeleteObject(&psurf->BaseObject);
_SEH2_YIELD(return NULL;)
}
_SEH2_END
}
else
{
/* Mostly inspired from wine code.
* We use low level functions because:
* - at this point, the icon bitmap could have a different bit depth than the DC,
* making it thus impossible to use NtCreateCompatibleDC and selecting the bitmap.
* This happens after a mode setting change.
* - it avoids massive GDI objects locking when only the destination surface needs it.
* - It makes (small) performance gains.
*/
BOOL
UserDrawIconEx(
HDC hDc,
INT xLeft,
INT yTop,
PCURICON_OBJECT pIcon,
INT cxWidth,
INT cyHeight,
UINT istepIfAniCur,
HBRUSH hbrFlickerFreeDraw,
UINT diFlags)
{
PSURFACE psurfDest, psurfMask, psurfColor; //, psurfOffScreen = NULL;
PDC pdc = NULL;
BOOL Ret = FALSE;
HBITMAP hbmMask, hbmColor, hbmAlpha;
BOOL bOffScreen;
RECTL rcDest, rcSrc;
CLIPOBJ* pdcClipObj = NULL;
EXLATEOBJ exlo;
/* Stupid case */
if((diFlags & DI_NORMAL) == 0)
{
ERR("DrawIconEx called without mask or color bitmap to draw.\n");
return FALSE;
}
if (pIcon->CURSORF_flags & CURSORF_ACON)
{
ACON* pAcon = (ACON*)pIcon;
if(istepIfAniCur >= pAcon->cicur)
{
ERR("NtUserDrawIconEx: istepIfAniCur too big!\n");
return FALSE;
}
pIcon = pAcon->aspcur[pAcon->aicur[istepIfAniCur]];
}
hbmMask = pIcon->hbmMask;
hbmColor = pIcon->hbmColor;
hbmAlpha = pIcon->hbmAlpha;
/*
* Get our objects.
* Shared locks are enough, we are only reading those bitmaps
*/
psurfMask = SURFACE_ShareLockSurface(hbmMask);
if(psurfMask == NULL)
{
ERR("Unable to lock the mask surface.\n");
return FALSE;
}
/* Color bitmap is not mandatory */
if(hbmColor == NULL)
{
/* But then the mask bitmap must have the information in it's bottom half */
ASSERT(psurfMask->SurfObj.sizlBitmap.cy == 2*pIcon->cy);
psurfColor = NULL;
}
else if ((psurfColor = SURFACE_ShareLockSurface(hbmColor)) == NULL)
{
ERR("Unable to lock the color bitmap.\n");
SURFACE_ShareUnlockSurface(psurfMask);
return FALSE;
}
pdc = DC_LockDc(hDc);
if(!pdc)
{
ERR("Could not lock the destination DC.\n");
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return FALSE;
}
/* Calculate destination rectangle */
RECTL_vSetRect(&rcDest, xLeft, yTop, xLeft + cxWidth, yTop + cyHeight);
IntLPtoDP(pdc, (LPPOINT)&rcDest, 2);
RECTL_vOffsetRect(&rcDest, pdc->ptlDCOrig.x, pdc->ptlDCOrig.y);
/* Prepare the underlying surface */
DC_vPrepareDCsForBlit(pdc, rcDest, NULL, rcDest);
/* We now have our destination surface and rectangle */
psurfDest = pdc->dclevel.pSurface;
if(psurfDest == NULL)
{
/* Empty DC */
DC_vFinishBlit(pdc, NULL);
DC_UnlockDc(pdc);
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return FALSE;
}
/* Set source rect */
RECTL_vSetRect(&rcSrc, 0, 0, pIcon->cx, pIcon->cy);
/* Fix width parameter, if needed */
if (!cxWidth)
{
if(diFlags & DI_DEFAULTSIZE)
cxWidth = is_icon(pIcon) ?
UserGetSystemMetrics(SM_CXICON) : UserGetSystemMetrics(SM_CXCURSOR);
else
cxWidth = pIcon->cx;
}
/* Fix height parameter, if needed */
if (!cyHeight)
{
if(diFlags & DI_DEFAULTSIZE)
cyHeight = is_icon(pIcon) ?
UserGetSystemMetrics(SM_CYICON) : UserGetSystemMetrics(SM_CYCURSOR);
else
cyHeight = pIcon->cy;
}
/* Should we render off-screen? */
bOffScreen = hbrFlickerFreeDraw &&
(GDI_HANDLE_GET_TYPE(hbrFlickerFreeDraw) == GDI_OBJECT_TYPE_BRUSH);
if (bOffScreen)
{
/* Yes: Allocate and paint the offscreen surface */
EBRUSHOBJ eboFill;
PBRUSH pbrush = BRUSH_ShareLockBrush(hbrFlickerFreeDraw);
TRACE("Performing off-screen rendering.\n");
if(!pbrush)
{
ERR("Failed to get brush object.\n");
goto Cleanup;
}
#if 0 //We lock the hdc surface during the whole function it makes no sense to use an offscreen surface for "flicker free" drawing
psurfOffScreen = SURFACE_AllocSurface(STYPE_BITMAP,
cxWidth, cyHeight, psurfDest->SurfObj.iBitmapFormat,
0, 0, NULL);
if(!psurfOffScreen)
{
ERR("Failed to allocate the off-screen surface.\n");
BRUSH_ShareUnlockBrush(pbrush);
goto Cleanup;
}
/* Paint the brush */
EBRUSHOBJ_vInit(&eboFill, pbrush, psurfOffScreen, 0x00FFFFFF, 0, NULL);
RECTL_vSetRect(&rcDest, 0, 0, cxWidth, cyHeight);
Ret = IntEngBitBlt(&psurfOffScreen->SurfObj,
NULL,
NULL,
NULL,
NULL,
&rcDest,
NULL,
NULL,
&eboFill.BrushObject,
&pbrush->ptOrigin,
ROP4_PATCOPY);
/* Clean up everything */
EBRUSHOBJ_vCleanup(&eboFill);
BRUSH_ShareUnlockBrush(pbrush);
if(!Ret)
{
ERR("Failed to paint the off-screen surface.\n");
goto Cleanup;
}
/* We now have our destination surface */
psurfDest = psurfOffScreen;
#else
pdcClipObj = pdc->rosdc.CombinedClip;
/* Paint the brush */
EBRUSHOBJ_vInit(&eboFill, pbrush, psurfDest, 0x00FFFFFF, 0, NULL);
Ret = IntEngBitBlt(&psurfDest->SurfObj,
NULL,
NULL,
pdcClipObj,
NULL,
&rcDest,
NULL,
NULL,
&eboFill.BrushObject,
&pbrush->ptOrigin,
ROP4_PATCOPY);
/* Clean up everything */
EBRUSHOBJ_vCleanup(&eboFill);
BRUSH_ShareUnlockBrush(pbrush);
if(!Ret)
{
ERR("Failed to paint the off-screen surface.\n");
goto Cleanup;
}
#endif
}
else
{
/* We directly draw to the DC */
TRACE("Performing on screen rendering.\n");
pdcClipObj = pdc->rosdc.CombinedClip;
// psurfOffScreen = NULL;
}
/* Now do the rendering */
if(hbmAlpha && ((diFlags & DI_NORMAL) == DI_NORMAL))
{
BLENDOBJ blendobj = { {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA } };
PSURFACE psurf = NULL;
psurf = SURFACE_ShareLockSurface(hbmAlpha);
if(!psurf)
{
ERR("SURFACE_LockSurface failed!\n");
goto NoAlpha;
}
/* Initialize color translation object */
EXLATEOBJ_vInitialize(&exlo, psurf->ppal, psurfDest->ppal, 0xFFFFFFFF, 0xFFFFFFFF, 0);
/* Now do it */
Ret = IntEngAlphaBlend(&psurfDest->SurfObj,
&psurf->SurfObj,
pdcClipObj,
&exlo.xlo,
&rcDest,
&rcSrc,
&blendobj);
EXLATEOBJ_vCleanup(&exlo);
SURFACE_ShareUnlockSurface(psurf);
if(Ret) goto done;
ERR("NtGdiAlphaBlend failed!\n");
}
NoAlpha:
if (diFlags & DI_MASK)
{
DWORD rop4 = (diFlags & DI_IMAGE) ? ROP4_SRCAND : ROP4_SRCCOPY;
EXLATEOBJ_vInitSrcMonoXlate(&exlo, psurfDest->ppal, 0x00FFFFFF, 0);
Ret = IntEngStretchBlt(&psurfDest->SurfObj,
&psurfMask->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
NULL,
&rcDest,
&rcSrc,
NULL,
NULL,
NULL,
rop4);
EXLATEOBJ_vCleanup(&exlo);
if(!Ret)
{
ERR("Failed to mask the bitmap data.\n");
goto Cleanup;
}
}
if(diFlags & DI_IMAGE)
{
if (psurfColor)
{
DWORD rop4 = (diFlags & DI_MASK) ? ROP4_SRCINVERT : ROP4_SRCCOPY ;
EXLATEOBJ_vInitialize(&exlo, psurfColor->ppal, psurfDest->ppal, 0x00FFFFFF, 0x00FFFFFF, 0);
Ret = IntEngStretchBlt(&psurfDest->SurfObj,
&psurfColor->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
NULL,
&rcDest,
&rcSrc,
NULL,
NULL,
NULL,
rop4);
EXLATEOBJ_vCleanup(&exlo);
if(!Ret)
{
ERR("Failed to render the icon bitmap.\n");
goto Cleanup;
}
}
else
{
/* Mask bitmap holds the information in its bottom half */
DWORD rop4 = (diFlags & DI_MASK) ? ROP4_SRCINVERT : ROP4_SRCCOPY;
RECTL_vOffsetRect(&rcSrc, 0, pIcon->cy);
EXLATEOBJ_vInitSrcMonoXlate(&exlo, psurfDest->ppal, 0x00FFFFFF, 0);
Ret = IntEngStretchBlt(&psurfDest->SurfObj,
&psurfMask->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
NULL,
&rcDest,
&rcSrc,
NULL,
NULL,
NULL,
rop4);
EXLATEOBJ_vCleanup(&exlo);
if(!Ret)
{
ERR("Failed to render the icon bitmap.\n");
goto Cleanup;
}
}
}
done:
#if 0
/* We're done. Was it a double buffered draw ? */
if(bOffScreen)
{
/* Yes. Draw it back to our DC */
POINTL ptSrc = {0, 0};
/* Calculate destination rectangle */
RECTL_vSetRect(&rcDest, xLeft, yTop, xLeft + cxWidth, yTop + cyHeight);
IntLPtoDP(pdc, (LPPOINT)&rcDest, 2);
RECTL_vOffsetRect(&rcDest, pdc->ptlDCOrig.x, pdc->ptlDCOrig.y);
/* Get the clip object */
pdcClipObj = pdc->rosdc.CombinedClip;
/* We now have our destination surface and rectangle */
psurfDest = pdc->dclevel.pSurface;
/* Color translation */
EXLATEOBJ_vInitialize(&exlo, psurfOffScreen->ppal, psurfDest->ppal, 0x00FFFFFF, 0x00FFFFFF, 0);
/* Blt it! */
Ret = IntEngBitBlt(&psurfDest->SurfObj,
&psurfOffScreen->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
&rcDest,
&ptSrc,
NULL,
NULL,
NULL,
ROP4_SRCCOPY);
EXLATEOBJ_vCleanup(&exlo);
}
#endif
Cleanup:
if(pdc)
{
DC_vFinishBlit(pdc, NULL);
DC_UnlockDc(pdc);
}
#if 0
/* Delete off screen rendering surface */
if(psurfOffScreen)
GDIOBJ_vDeleteObject(&psurfOffScreen->BaseObject);
#endif
/* Unlock other surfaces */
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return Ret;
}
