sprite.c

远程桌面连接工具

    int			updated;
    VisualPtr		pVisual;

    pPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;

    SCREEN_PROLOGUE(pScreen, StoreColors);
    
    (*pScreen->StoreColors) (pMap, ndef, pdef);

    SCREEN_EPILOGUE(pScreen, StoreColors, rfbSpriteStoreColors);

    if (pPriv->pColormap == pMap)
    {
	updated = 0;
	pVisual = pMap->pVisual;
	if (pVisual->class == DirectColor)
	{
	    /* Direct color - match on any of the subfields */

#define MaskMatch(a,b,mask) ((a) & (pVisual->mask) == (b) & (pVisual->mask))

#define UpdateDAC(plane,dac,mask) {\
    if (MaskMatch (pPriv->colors[plane].pixel,pdef[i].pixel,mask)) {\
	pPriv->colors[plane].dac = pdef[i].dac; \
	updated = 1; \
    } \
}

#define CheckDirect(plane) \
	    UpdateDAC(plane,red,redMask) \
	    UpdateDAC(plane,green,greenMask) \
	    UpdateDAC(plane,blue,blueMask)

	    for (i = 0; i < ndef; i++)
	    {
		CheckDirect (SOURCE_COLOR)
		CheckDirect (MASK_COLOR)
	    }
	}
	else
	{
	    /* PseudoColor/GrayScale - match on exact pixel */
	    for (i = 0; i < ndef; i++)
	    {
	    	if (pdef[i].pixel == pPriv->colors[SOURCE_COLOR].pixel)
	    	{
		    pPriv->colors[SOURCE_COLOR] = pdef[i];
		    if (++updated == 2)
		    	break;
	    	}
	    	if (pdef[i].pixel == pPriv->colors[MASK_COLOR].pixel)
	    	{
		    pPriv->colors[MASK_COLOR] = pdef[i];
		    if (++updated == 2)
		    	break;
	    	}
	    }
	}
    	if (updated)
    	{
	    pPriv->checkPixels = TRUE;
	    if (rfbScreen.cursorIsDrawn)
	    	rfbSpriteRemoveCursor (pScreen);
    	}
    }
}

static void
rfbSpriteFindColors (pScreen)
    ScreenPtr	pScreen;
{
    rfbSpriteScreenPtr	pScreenPriv = (rfbSpriteScreenPtr)
			    pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    CursorPtr		pCursor;
    xColorItem		*sourceColor, *maskColor;

    pCursor = pScreenPriv->pCursor;
    sourceColor = &pScreenPriv->colors[SOURCE_COLOR];
    maskColor = &pScreenPriv->colors[MASK_COLOR];
    if (pScreenPriv->pColormap != pScreenPriv->pInstalledMap ||
	!(pCursor->foreRed == sourceColor->red &&
	  pCursor->foreGreen == sourceColor->green &&
          pCursor->foreBlue == sourceColor->blue &&
	  pCursor->backRed == maskColor->red &&
	  pCursor->backGreen == maskColor->green &&
	  pCursor->backBlue == maskColor->blue))
    {
	pScreenPriv->pColormap = pScreenPriv->pInstalledMap;
	sourceColor->red = pCursor->foreRed;
	sourceColor->green = pCursor->foreGreen;
	sourceColor->blue = pCursor->foreBlue;
	FakeAllocColor (pScreenPriv->pColormap, sourceColor);
	maskColor->red = pCursor->backRed;
	maskColor->green = pCursor->backGreen;
	maskColor->blue = pCursor->backBlue;
	FakeAllocColor (pScreenPriv->pColormap, maskColor);
	/* "free" the pixels right away, don't let this confuse you */
	FakeFreeColor(pScreenPriv->pColormap, sourceColor->pixel);
	FakeFreeColor(pScreenPriv->pColormap, maskColor->pixel);
    }
    pScreenPriv->checkPixels = FALSE;
}

/*
 * BackingStore wrappers
 */

static void
rfbSpriteSaveDoomedAreas (pWin, pObscured, dx, dy)
    WindowPtr	pWin;
    RegionPtr	pObscured;
    int		dx, dy;
{
    ScreenPtr		pScreen;
    rfbSpriteScreenPtr   pScreenPriv;
    BoxRec		cursorBox;

    pScreen = pWin->drawable.pScreen;
    
    SCREEN_PROLOGUE (pScreen, SaveDoomedAreas);

    pScreenPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    if (rfbScreen.cursorIsDrawn)
    {
	cursorBox = pScreenPriv->saved;

	if (dx || dy)
 	{
	    cursorBox.x1 += dx;
	    cursorBox.y1 += dy;
	    cursorBox.x2 += dx;
	    cursorBox.y2 += dy;
	}
	if (RECT_IN_REGION( pScreen, pObscured, &cursorBox) != rgnOUT)
	    rfbSpriteRemoveCursor (pScreen);
    }

    (*pScreen->SaveDoomedAreas) (pWin, pObscured, dx, dy);

    SCREEN_EPILOGUE (pScreen, SaveDoomedAreas, rfbSpriteSaveDoomedAreas);
}

static RegionPtr
rfbSpriteRestoreAreas (pWin, prgnExposed)
    WindowPtr	pWin;
    RegionPtr	prgnExposed;
{
    ScreenPtr		pScreen;
    rfbSpriteScreenPtr   pScreenPriv;
    RegionPtr		result;

    pScreen = pWin->drawable.pScreen;
    
    SCREEN_PROLOGUE (pScreen, RestoreAreas);

    pScreenPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    if (rfbScreen.cursorIsDrawn)
    {
	if (RECT_IN_REGION( pScreen, prgnExposed, &pScreenPriv->saved) != rgnOUT)
	    rfbSpriteRemoveCursor (pScreen);
    }

    result = (*pScreen->RestoreAreas) (pWin, prgnExposed);

    SCREEN_EPILOGUE (pScreen, RestoreAreas, rfbSpriteRestoreAreas);

    return result;
}

/*
 * Window wrappers
 */

static void
rfbSpritePaintWindowBackground (pWin, pRegion, what)
    WindowPtr	pWin;
    RegionPtr	pRegion;
    int		what;
{
    ScreenPtr	    pScreen;
    rfbSpriteScreenPtr    pScreenPriv;

    pScreen = pWin->drawable.pScreen;

    SCREEN_PROLOGUE (pScreen, PaintWindowBackground);

    pScreenPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    if (rfbScreen.cursorIsDrawn)
    {
	/*
	 * If the cursor is on the same screen as the window, check the
	 * region to paint for the cursor and remove it as necessary
	 */
	if (RECT_IN_REGION( pScreen, pRegion, &pScreenPriv->saved) != rgnOUT)
	    rfbSpriteRemoveCursor (pScreen);
    }

    (*pScreen->PaintWindowBackground) (pWin, pRegion, what);

    SCREEN_EPILOGUE (pScreen, PaintWindowBackground, rfbSpritePaintWindowBackground);
}

static void
rfbSpritePaintWindowBorder (pWin, pRegion, what)
    WindowPtr	pWin;
    RegionPtr	pRegion;
    int		what;
{
    ScreenPtr	    pScreen;
    rfbSpriteScreenPtr    pScreenPriv;

    pScreen = pWin->drawable.pScreen;

    SCREEN_PROLOGUE (pScreen, PaintWindowBorder);

    pScreenPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    if (rfbScreen.cursorIsDrawn)
    {
	/*
	 * If the cursor is on the same screen as the window, check the
	 * region to paint for the cursor and remove it as necessary
	 */
	if (RECT_IN_REGION( pScreen, pRegion, &pScreenPriv->saved) != rgnOUT)
	    rfbSpriteRemoveCursor (pScreen);
    }

    (*pScreen->PaintWindowBorder) (pWin, pRegion, what);

    SCREEN_EPILOGUE (pScreen, PaintWindowBorder, rfbSpritePaintWindowBorder);
}

static void
rfbSpriteCopyWindow (pWin, ptOldOrg, pRegion)
    WindowPtr	pWin;
    DDXPointRec	ptOldOrg;
    RegionPtr	pRegion;
{
    ScreenPtr	    pScreen;
    rfbSpriteScreenPtr    pScreenPriv;
    BoxRec	    cursorBox;
    int		    dx, dy;

    pScreen = pWin->drawable.pScreen;

    SCREEN_PROLOGUE (pScreen, CopyWindow);

    pScreenPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    if (rfbScreen.cursorIsDrawn)
    {
	/*
	 * check both the source and the destination areas.  The given
	 * region is source relative, so offset the cursor box by
	 * the delta position
	 */
	cursorBox = pScreenPriv->saved;
	dx = pWin->drawable.x - ptOldOrg.x;
	dy = pWin->drawable.y - ptOldOrg.y;
	cursorBox.x1 -= dx;
	cursorBox.x2 -= dx;
	cursorBox.y1 -= dy;
	cursorBox.y2 -= dy;
	if (RECT_IN_REGION( pScreen, pRegion, &pScreenPriv->saved) != rgnOUT ||
	    RECT_IN_REGION( pScreen, pRegion, &cursorBox) != rgnOUT)
	    rfbSpriteRemoveCursor (pScreen);
    }

    (*pScreen->CopyWindow) (pWin, ptOldOrg, pRegion);

    SCREEN_EPILOGUE (pScreen, CopyWindow, rfbSpriteCopyWindow);
}

static void
rfbSpriteClearToBackground (pWin, x, y, w, h, generateExposures)
    WindowPtr pWin;
    short x,y;
    unsigned short w,h;
    Bool generateExposures;
{
    ScreenPtr		pScreen;
    rfbSpriteScreenPtr	pScreenPriv;
    int			realw, realh;

    pScreen = pWin->drawable.pScreen;

    SCREEN_PROLOGUE (pScreen, ClearToBackground);

    pScreenPriv = (rfbSpriteScreenPtr) pScreen->devPrivates[rfbSpriteScreenIndex].ptr;
    if (GC_CHECK(pWin))
    {
	if (!(realw = w))
	    realw = (int) pWin->drawable.width - x;
	if (!(realh = h))
	    realh = (int) pWin->drawable.height - y;
	if (ORG_OVERLAP(&pScreenPriv->saved, pWin->drawable.x, pWin->drawable.y,
			x, y, realw, realh))
	{
	    rfbSpriteRemoveCursor (pScreen);
	}
    }

    (*pScreen->ClearToBackground) (pWin, x, y, w, h, generateExposures);

    SCREEN_EPILOGUE (pScreen, ClearToBackground, rfbSpriteClearToBackground);
}

/*
 * GC Func wrappers
 */

static void
rfbSpriteValidateGC (pGC, changes, pDrawable)
    GCPtr	pGC;
    Mask	changes;
    DrawablePtr	pDrawable;
{
    GC_FUNC_PROLOGUE (pGC);

    (*pGC->funcs->ValidateGC) (pGC, changes, pDrawable);
    
    pGCPriv->wrapOps = NULL;
    if (pDrawable->type == DRAWABLE_WINDOW && ((WindowPtr) pDrawable)->viewable)
    {
	WindowPtr   pWin;
	RegionPtr   pRegion;

	pWin = (WindowPtr) pDrawable;
	pRegion = &pWin->clipList;
	if (pGC->subWindowMode == IncludeInferiors)
	    pRegion = &pWin->borderClip;
	if (REGION_NOTEMPTY(pDrawable->pScreen, pRegion))
	    pGCPriv->wrapOps = pGC->ops;
    }

    GC_FUNC_EPILOGUE (pGC);
}

static void
rfbSpriteChangeGC (pGC, mask)
    GCPtr	    pGC;
    unsigned long   mask;
{
    GC_FUNC_PROLOGUE (pGC);

    (*pGC->funcs->ChangeGC) (pGC, mask);
    
    GC_FUNC_EPILOGUE (pGC);
}

static void
rfbSpriteCopyGC (pGCSrc, mask, pGCDst)
    GCPtr	    pGCSrc, pGCDst;
    unsigned long   mask;
{
    GC_FUNC_PROLOGUE (pGCDst);

    (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
    
    GC_FUNC_EPILOGUE (pGCDst);
}

static void
rfbSpriteDestroyGC (pGC)
    GCPtr   pGC;
{
    GC_FUNC_PROLOGUE (pGC);

    (*pGC->funcs->DestroyGC) (pGC);
    
    GC_FUNC_EPILOGUE (pGC);
}

static void
rfbSpriteChangeClip (pGC, type, pvalue, nrects)
    GCPtr   pGC;
    int		type;
    pointer	pvalue;
    int		nrects;
{
    GC_FUNC_PROLOGUE (pGC);

    (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);

    GC_FUNC_EPILOGUE (pGC);
}

static void
rfbSpriteCopyClip(pgcDst, pgcSrc)
    GCPtr pgcDst, pgcSrc;
{
    GC_FUNC_PROLOGUE (pgcDst);

    (* pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);

    GC_FUNC_EPILOGUE (pgcDst);
}

static void
rfbSpriteDestroyClip(pGC)
    GCPtr	pGC;
{
    GC_FUNC_PROLOGUE (pGC);

    (* pGC->funcs->DestroyClip)(pGC);

    GC_FUNC_EPILOGUE (pGC);
}

/*
 * GC Op wrappers
 */

static void
rfbSpriteFillSpans(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GCPtr	pGC;
    int		nInit;			/* number of spans to fill */
    DDXPointPtr pptInit;		/* pointer to list of start points */
    int		*pwidthInit;		/* pointer to list of n widths */
    int 	fSorted;
{
    GC_SETUP(pDrawable, pGC);

    if (GC_CHECK((WindowPtr) pDrawable))
    {
	register DDXPointPtr    pts;
	register int    	*widths;
	register int    	nPts;

	for (pts = pptInit, widths = pwidthInit, nPts = nInit;
	     nPts--;
	     pts++, widths++)
 	{
	     if (SPN_OVERLAP(&pScreenPriv->saved,pts->y,pts->x,*widths))
	     {
		 rfbSpriteRemoveCursor (pDrawable->pScreen);
		 break;
	     }
	}
    }

    GC_OP_PROLOGUE (pGC);

    (*pGC->ops->FillSpans) (pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted);

    GC_OP_EPILOGUE (pGC);
}

static void
rfbSpriteSetSpans(pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted)
    DrawablePtr		pDrawable;
    GCPtr		pGC;
    char		*psrc;
    register DDXPointPtr ppt;
    int			*pwidth;
    int			nspans;
    int			fSorted;
{
    GC_SETUP(pDrawable, pGC);

    if (GC_CHECK((WindowPtr) pDrawable))
    {
	register DDXPointPtr    pts;
	register int    	*widths;
	register int    	nPts;

	for (pts = ppt, widths = pwidth, nPts = nspans;
	     nPts--;
	     pts++, widths++)
 	{
	     if (SPN_OVERLAP(&pScreenPriv->saved,pts->y,pts->x,*widths))
	     {
		 rfbSpriteRemoveCursor(pDrawable->pScreen);
		 break;
	     }
	}
    }

    GC_OP_PROLOGUE (pGC);

    (*pGC->ops->SetSpans) (pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted);

    GC_OP_EPILOGUE (pGC);
}

static void
rfbSpritePutImage(pDrawable, pGC, depth, x, y, w, h, leftPad, format, pBits)
    DrawablePtr	  pDrawable;
    GCPtr   	  pGC;
    int		  depth;
    int	    	  x;
    int	    	  y;
    int	    	  w;
    int	    	  h;
    int	    	  format;
    char    	  *pBits;
{
    GC_SETUP(pDrawable, pGC);

    if (GC_CHECK((WindowPtr) pDrawable))
    {
	if (ORG_OVERLAP(&pScreenPriv->saved,pDrawable->x,pDrawable->y,
			x,y,w,h))
 	{
	    rfbSpriteRemoveCursor (pDrawable->pScreen);
	}
    }

    GC_OP_PROLOGUE (pGC);

    (*pGC->ops->PutImage) (pDrawable, pGC, depth, x, y, w, h, leftPad, format, pBits);

    GC_OP_EPILOGUE (pGC);
}

static RegionPtr
rfbSpriteCopyArea (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty)
    DrawablePtr	  pSrc;
    DrawablePtr	  pDst;
    GCPtr   	  pGC;
    int	    	  srcx;
    int	    	  srcy;
    int	    	  w;
    int	    	  h;