BOOL APIENTRY
GreStretchBltMask(
HDC hDCDest,
INT XOriginDest,
INT YOriginDest,
INT WidthDest,
INT HeightDest,
HDC hDCSrc,
INT XOriginSrc,
INT YOriginSrc,
INT WidthSrc,
INT HeightSrc,
DWORD ROP,
IN DWORD dwBackColor,
HDC hDCMask,
INT XOriginMask,
INT YOriginMask)
{
PDC DCDest;
PDC DCSrc = NULL;
PDC DCMask = NULL;
HDC ahDC[3];
PGDIOBJ apObj[3];
PDC_ATTR pdcattr;
SURFACE *BitmapDest, *BitmapSrc = NULL;
SURFACE *BitmapMask = NULL;
RECTL DestRect;
RECTL SourceRect;
POINTL MaskPoint;
BOOL Status = FALSE;
EXLATEOBJ exlo;
XLATEOBJ *XlateObj = NULL;
POINTL BrushOrigin;
BOOL UsesSource;
BOOL UsesMask;
FIXUP_ROP(ROP);
UsesSource = ROP_USES_SOURCE(ROP);
UsesMask = ROP_USES_MASK(ROP);
if (0 == WidthDest || 0 == HeightDest || 0 == WidthSrc || 0 == HeightSrc)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return TRUE;
}
if (!hDCDest || (UsesSource && !hDCSrc) || (UsesMask && !hDCMask))
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
ahDC[0] = hDCDest;
ahDC[1] = UsesSource ? hDCSrc : NULL;
ahDC[2] = UsesMask ? hDCMask : NULL;
if (!GDIOBJ_bLockMultipleObjects(3, (HGDIOBJ*)ahDC, apObj, GDIObjType_DC_TYPE))
{
WARN("Invalid dc handle (dest=0x%p, src=0x%p) passed to GreStretchBltMask\n", hDCDest, hDCSrc);
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
DCDest = apObj[0];
DCSrc = apObj[1];
DCMask = apObj[2];
if (DCDest->dctype == DC_TYPE_INFO)
{
if(DCSrc) GDIOBJ_vUnlockObject(&DCSrc->BaseObject);
if(DCMask) GDIOBJ_vUnlockObject(&DCMask->BaseObject);
GDIOBJ_vUnlockObject(&DCDest->BaseObject);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
if (UsesSource)
{
if (DCSrc->dctype == DC_TYPE_INFO)
{
GDIOBJ_vUnlockObject(&DCDest->BaseObject);
GDIOBJ_vUnlockObject(&DCSrc->BaseObject);
if(DCMask) GDIOBJ_vUnlockObject(&DCMask->BaseObject);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
}
pdcattr = DCDest->pdcattr;
DestRect.left = XOriginDest;
DestRect.top = YOriginDest;
DestRect.right = XOriginDest+WidthDest;
DestRect.bottom = YOriginDest+HeightDest;
IntLPtoDP(DCDest, (LPPOINT)&DestRect, 2);
DestRect.left += DCDest->ptlDCOrig.x;
DestRect.top += DCDest->ptlDCOrig.y;
DestRect.right += DCDest->ptlDCOrig.x;
DestRect.bottom += DCDest->ptlDCOrig.y;
SourceRect.left = XOriginSrc;
SourceRect.top = YOriginSrc;
SourceRect.right = XOriginSrc+WidthSrc;
SourceRect.bottom = YOriginSrc+HeightSrc;
if (UsesSource)
{
IntLPtoDP(DCSrc, (LPPOINT)&SourceRect, 2);
SourceRect.left += DCSrc->ptlDCOrig.x;
SourceRect.top += DCSrc->ptlDCOrig.y;
SourceRect.right += DCSrc->ptlDCOrig.x;
SourceRect.bottom += DCSrc->ptlDCOrig.y;
}
BrushOrigin.x = 0;
BrushOrigin.y = 0;
/* Only prepare Source and Dest, hdcMask represents a DIB */
DC_vPrepareDCsForBlit(DCDest, &DestRect, DCSrc, &SourceRect);
if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
DC_vUpdateFillBrush(DCDest);
/* Determine surfaces to be used in the bitblt */
BitmapDest = DCDest->dclevel.pSurface;
if (BitmapDest == NULL)
goto failed;
if (UsesSource)
{
BitmapSrc = DCSrc->dclevel.pSurface;
if (BitmapSrc == NULL)
goto failed;
/* Create the XLATEOBJ. */
EXLATEOBJ_vInitXlateFromDCs(&exlo, DCSrc, DCDest);
XlateObj = &exlo.xlo;
}
/* Offset the brush */
BrushOrigin.x += DCDest->ptlDCOrig.x;
BrushOrigin.y += DCDest->ptlDCOrig.y;
/* Make mask surface for source surface */
if (BitmapSrc && DCMask)
{
BitmapMask = DCMask->dclevel.pSurface;
if (BitmapMask &&
(BitmapMask->SurfObj.sizlBitmap.cx < WidthSrc ||
BitmapMask->SurfObj.sizlBitmap.cy < HeightSrc))
{
WARN("%dx%d mask is smaller than %dx%d bitmap\n",
BitmapMask->SurfObj.sizlBitmap.cx, BitmapMask->SurfObj.sizlBitmap.cy,
WidthSrc, HeightSrc);
EXLATEOBJ_vCleanup(&exlo);
goto failed;
}
/* Create mask offset point */
MaskPoint.x = XOriginMask;
MaskPoint.y = YOriginMask;
IntLPtoDP(DCMask, &MaskPoint, 1);
MaskPoint.x += DCMask->ptlDCOrig.x;
MaskPoint.y += DCMask->ptlDCOrig.y;
}
/* Perform the bitblt operation */
Status = IntEngStretchBlt(&BitmapDest->SurfObj,
BitmapSrc ? &BitmapSrc->SurfObj : NULL,
BitmapMask ? &BitmapMask->SurfObj : NULL,
&DCDest->co.ClipObj,
XlateObj,
&DCDest->dclevel.ca,
&DestRect,
&SourceRect,
BitmapMask ? &MaskPoint : NULL,
&DCDest->eboFill.BrushObject,
&BrushOrigin,
ROP_TO_ROP4(ROP));
if (UsesSource)
{
EXLATEOBJ_vCleanup(&exlo);
}
failed:
DC_vFinishBlit(DCDest, DCSrc);
if (UsesSource)
{
DC_UnlockDc(DCSrc);
}
if (DCMask)
{
DC_UnlockDc(DCMask);
}
DC_UnlockDc(DCDest);
return Status;
}
/* 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;
}