C++ DMX_GET_PICT_PRIV函数代码示例

/** Destroy the picture's list of clip rectangles. */
void
dmxDestroyPictureClip(PicturePtr pPicture)
{
    ScreenPtr pScreen = pPicture->pDrawable->pScreen;
    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr ps = GetPictureScreen(pScreen);
    dmxPictPrivPtr pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    DMX_UNWRAP(DestroyPictureClip, dmxScreen, ps);
#if 1
    if (ps->DestroyPictureClip)
        ps->DestroyPictureClip(pPicture);
#endif

    /* Destroy picture clip rects on back-end server */
    if (pPictPriv->pict) {
        XRenderSetPictureClipRectangles(dmxScreen->beDisplay,
                                        pPictPriv->pict, 0, 0, NULL, 0);
        dmxSync(dmxScreen, FALSE);
    }
    else {
        /* FIXME: Handle destroying clip region when offscreen */
    }

    DMX_WRAP(DestroyPictureClip, dmxDestroyPictureClip, dmxScreen, ps);
}

/** Fill a rectangle on the appropriate screen by combining the color
 *  with the dest picture in the area specified by the list of
 *  rectangles.  For a complete description see the protocol document of
 *  the RENDER library. */
void
dmxCompositeRects(CARD8 op,
                  PicturePtr pDst,
                  xRenderColor * color, int nRect, xRectangle *rects)
{
    ScreenPtr pScreen = pDst->pDrawable->pScreen;
    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr ps = GetPictureScreen(pScreen);
    dmxPictPrivPtr pPictPriv = DMX_GET_PICT_PRIV(pDst);

    DMX_UNWRAP(CompositeRects, dmxScreen, ps);
#if 0
    if (ps->CompositeRects)
        ps->CompositeRects(op, pDst, color, nRect, rects);
#endif

    /* CompositeRects on back-end server */
    if (pPictPriv->pict) {
        XRenderFillRectangles(dmxScreen->beDisplay,
                              op,
                              pPictPriv->pict,
                              (XRenderColor *) color,
                              (XRectangle *) rects, nRect);
        dmxSync(dmxScreen, FALSE);
    }

    DMX_WRAP(CompositeRects, dmxCompositeRects, dmxScreen, ps);
}

/** Set the picture filter on each screen. */
static int
dmxProcRenderSetPictureFilter(ClientPtr client)
{
    DMXScreenInfo *dmxScreen;
    PicturePtr pPicture;
    dmxPictPrivPtr pPictPriv;
    char *filter;
    XFixed *params;
    int nparams;

    REQUEST(xRenderSetPictureFilterReq);

    REQUEST_AT_LEAST_SIZE(xRenderSetPictureFilterReq);
    VERIFY_PICTURE(pPicture, stuff->picture, client, DixWriteAccess);

    /* For the following to work with PanoramiX, it assumes that Render
     * wraps the ProcRenderVector after dmxRenderInit has been called.
     */
    dmxScreen = &dmxScreens[pPicture->pDrawable->pScreen->myNum];
    pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    if (pPictPriv->pict) {
        filter = (char *) (stuff + 1);
        params = (XFixed *) (filter + ((stuff->nbytes + 3) & ~3));
        nparams = ((XFixed *) stuff + client->req_len) - params;

        XRenderSetPictureFilter(dmxScreen->beDisplay,
                                pPictPriv->pict, filter, params, nparams);
        dmxSync(dmxScreen, FALSE);
    }

    return dmxSaveRenderVector[stuff->renderReqType] (client);
}

/** Change the picture's list of clip rectangles. */
int dmxChangePictureClip(PicturePtr pPicture, int clipType,
			 pointer value, int n)
{
    ScreenPtr         pScreen   = pPicture->pDrawable->pScreen;
    DMXScreenInfo    *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr  ps        = GetPictureScreen(pScreen);
    dmxPictPrivPtr    pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    DMX_UNWRAP(ChangePictureClip, dmxScreen, ps);
#if 1
    if (ps->ChangePictureClip)
	ps->ChangePictureClip(pPicture, clipType, value, n);
#endif

    /* Change picture clip rects on back-end server */
    if (pPictPriv->pict) {
	/* The clip has already been changed into a region by the mi
	 * routine called above.
	 */
	if (pPicture->clientClip) {
	    RegionPtr   pClip = pPicture->clientClip;
	    BoxPtr      pBox  = REGION_RECTS(pClip);
	    int         nBox  = REGION_NUM_RECTS(pClip);
	    XRectangle *pRects;
	    XRectangle *pRect;
	    int         nRects;

	    nRects = nBox;
	    pRects = pRect = xalloc(nRects * sizeof(*pRect));

	    while (nBox--) {
		pRect->x      = pBox->x1;
		pRect->y      = pBox->y1;
		pRect->width  = pBox->x2 - pBox->x1;
		pRect->height = pBox->y2 - pBox->y1;
		pBox++;
		pRect++;
	    }

	    XRenderSetPictureClipRectangles(dmxScreen->beDisplay,
					    pPictPriv->pict,
					    0, 0,
					    pRects,
					    nRects);
	    xfree(pRects);
	} else {
	    XRenderSetPictureClipRectangles(dmxScreen->beDisplay,
					    pPictPriv->pict,
					    0, 0, NULL, 0);
	}
	dmxSync(dmxScreen, FALSE);
    } else {
	/* FIXME: Handle saving clip region when offscreen */
    }

    DMX_WRAP(ChangePictureClip, dmxChangePictureClip, dmxScreen, ps);
    
    return Success;
}

/** Composite a picture on the appropriate screen by combining the
 *  specified rectangle of the transformed src and mask operands with
 *  the specified rectangle of the dst using op as the compositing
 *  operator.  For a complete description see the protocol document of
 *  the RENDER library. */
void dmxComposite(CARD8 op,
		  PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,
		  INT16 xSrc, INT16 ySrc,
		  INT16 xMask, INT16 yMask,
		  INT16 xDst, INT16 yDst,
		  CARD16 width, CARD16 height)
{
    ScreenPtr         pScreen   = pDst->pDrawable->pScreen;
    DMXScreenInfo    *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr  ps        = GetPictureScreen(pScreen);
    dmxPictPrivPtr    pSrcPriv  = DMX_GET_PICT_PRIV(pSrc);
    dmxPictPrivPtr    pMaskPriv = NULL;
    dmxPictPrivPtr    pDstPriv  = DMX_GET_PICT_PRIV(pDst);

    if (pMask) pMaskPriv = DMX_GET_PICT_PRIV(pMask);

    DMX_UNWRAP(Composite, dmxScreen, ps);
#if 0
    if (ps->Composite)
	ps->Composite(op, pSrc, pMask, pDst,
		      xSrc, ySrc, xMask, yMask, xDst, yDst,
		      width, height);
#endif

    /* Composite on back-end server */
    if (pSrcPriv->pict && pDstPriv->pict &&
	((pMaskPriv && pMaskPriv->pict) || !pMaskPriv)) {
	XRenderComposite(dmxScreen->beDisplay,
			 op,
			 pSrcPriv->pict,
			 pMaskPriv ? pMaskPriv->pict : None,
			 pDstPriv->pict,
			 xSrc, ySrc,
			 xMask, yMask,
			 xDst, yDst,
			 width, height);
	dmxSync(dmxScreen, FALSE);
    }


    DMX_WRAP(Composite, dmxComposite, dmxScreen, ps);
}

/** Create \a pPicture on the backend. */
int dmxBECreatePicture(PicturePtr pPicture)
{
    dmxPictPrivPtr    pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    /* Create picutre on BE */
    pPictPriv->pict = dmxDoCreatePicture(pPicture);

    /* Flush changes to the backend server */
    dmxValidatePicture(pPicture, (1 << (CPLastBit+1)) - 1);

    return Success;
}

/** Composite a triangle fan on the appropriate screen.  For a complete
 *  description see the protocol document of the RENDER library. */
void dmxTriFan(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
	       PictFormatPtr maskFormat,
	       INT16 xSrc, INT16 ySrc,
	       int npoint, xPointFixed *points)
{
    ScreenPtr         pScreen   = pDst->pDrawable->pScreen;
    DMXScreenInfo    *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr  ps        = GetPictureScreen(pScreen);
    dmxPictPrivPtr    pSrcPriv  = DMX_GET_PICT_PRIV(pSrc);
    dmxPictPrivPtr    pDstPriv  = DMX_GET_PICT_PRIV(pDst);

    DMX_UNWRAP(TriFan, dmxScreen, ps);
#if 0
    if (ps->TriFan)
	ps->TriFan(op, pSrc, pDst, maskFormat, xSrc, ySrc, npoint, *points);
#endif

    /* Draw trapezoids on back-end server */
    if (pDstPriv->pict) {
	XRenderPictFormat *pFormat;

	pFormat = dmxFindFormat(dmxScreen, maskFormat);
	if (!pFormat) {
	    /* FIXME: Error! */
	}

	XRenderCompositeTriFan(dmxScreen->beDisplay,
			       op,
			       pSrcPriv->pict,
			       pDstPriv->pict,
			       pFormat,
			       xSrc, ySrc,
			       (XPointFixed *)points,
			       npoint);
	dmxSync(dmxScreen, FALSE);
    }

    DMX_WRAP(TriFan, dmxTriFan, dmxScreen, ps);
}

/** Destroy \a pPicture on the back-end server. */
Bool dmxBEFreePicture(PicturePtr pPicture)
{
    ScreenPtr      pScreen   = pPicture->pDrawable->pScreen;
    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
    dmxPictPrivPtr pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    if (pPictPriv->pict) {
	XRenderFreePicture(dmxScreen->beDisplay, pPictPriv->pict);
	pPictPriv->pict = (Picture)0;
	return TRUE;
    }

    return FALSE;
}

/** Create a list of pictures.  This function is called by
 *  dmxCreateAndRealizeWindow() during the lazy window creation
 *  realization process.  It creates the entire list of pictures that
 *  are associated with the given window. */
void dmxCreatePictureList(WindowPtr pWindow)
{
    PicturePtr  pPicture = GetPictureWindow(pWindow);

    while (pPicture) {
	dmxPictPrivPtr  pPictPriv = DMX_GET_PICT_PRIV(pPicture);

	/* Create the picture for this window */
	pPictPriv->pict = dmxDoCreatePicture(pPicture);

	/* ValidatePicture takes care of the state changes */

	pPicture = pPicture->pNext;
    }
}

/** Change the attributes of the pictures.  If the picture has not yet
 *  been created due to lazy window creation, save the mask so that it
 *  can be used to appropriately initialize the picture's attributes
 *  when it is created later. */
void dmxChangePicture(PicturePtr pPicture, Mask mask)
{
    ScreenPtr         pScreen   = pPicture->pDrawable->pScreen;
    DMXScreenInfo    *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr  ps        = GetPictureScreen(pScreen);
    dmxPictPrivPtr    pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    DMX_UNWRAP(ChangePicture, dmxScreen, ps);
#if 1
    if (ps->ChangePicture)
	ps->ChangePicture(pPicture, mask);
#endif

    /* Picture attribute changes are handled in ValidatePicture */
    pPictPriv->savedMask |= mask;

    DMX_WRAP(ChangePicture, dmxChangePicture, dmxScreen, ps);
}

/** Create a picture.  This function handles the CreatePicture
 *  unwrapping/wrapping and calls dmxDoCreatePicture to actually create
 *  the picture on the appropriate screen.  */
int dmxCreatePicture(PicturePtr pPicture)
{
    ScreenPtr         pScreen   = pPicture->pDrawable->pScreen;
    DMXScreenInfo    *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr  ps        = GetPictureScreen(pScreen);
    dmxPictPrivPtr    pPictPriv = DMX_GET_PICT_PRIV(pPicture);
    int               ret       = Success;

    DMX_UNWRAP(CreatePicture, dmxScreen, ps);
#if 1
    if (ps->CreatePicture)
	ret = ps->CreatePicture(pPicture);
#endif

    /* Create picture on back-end server */
    pPictPriv->pict      = dmxDoCreatePicture(pPicture);
    pPictPriv->savedMask = 0;

    DMX_WRAP(CreatePicture, dmxCreatePicture, dmxScreen, ps);

    return ret;
}

/** Set the picture transform on each screen. */
static int
dmxProcRenderSetPictureTransform(ClientPtr client)
{
    DMXScreenInfo *dmxScreen;
    PicturePtr pPicture;
    dmxPictPrivPtr pPictPriv;
    XTransform xform;

    REQUEST(xRenderSetPictureTransformReq);

    REQUEST_SIZE_MATCH(xRenderSetPictureTransformReq);
    VERIFY_PICTURE(pPicture, stuff->picture, client, DixWriteAccess);

    /* For the following to work with PanoramiX, it assumes that Render
     * wraps the ProcRenderVector after dmxRenderInit has been called.
     */
    dmxScreen = &dmxScreens[pPicture->pDrawable->pScreen->myNum];
    pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    if (pPictPriv->pict) {
        xform.matrix[0][0] = stuff->transform.matrix11;
        xform.matrix[0][1] = stuff->transform.matrix12;
        xform.matrix[0][2] = stuff->transform.matrix13;
        xform.matrix[1][0] = stuff->transform.matrix21;
        xform.matrix[1][1] = stuff->transform.matrix22;
        xform.matrix[1][2] = stuff->transform.matrix23;
        xform.matrix[2][0] = stuff->transform.matrix31;
        xform.matrix[2][1] = stuff->transform.matrix32;
        xform.matrix[2][2] = stuff->transform.matrix33;

        XRenderSetPictureTransform(dmxScreen->beDisplay,
                                   pPictPriv->pict, &xform);
        dmxSync(dmxScreen, FALSE);
    }

    return dmxSaveRenderVector[stuff->renderReqType] (client);
}

/** Composite glyphs on each screen into the requested picture.  If
 *  either the src or dest picture has not been allocated due to lazy
 *  window creation, this request will gracefully return. */
static int
dmxProcRenderCompositeGlyphs(ClientPtr client)
{
    int ret;

    REQUEST(xRenderCompositeGlyphsReq);

    ret = dmxSaveRenderVector[stuff->renderReqType] (client);

    /* For the following to work with PanoramiX, it assumes that Render
     * wraps the ProcRenderVector after dmxRenderInit has been called.
     */
    if (ret == Success) {
        PicturePtr pSrc;
        dmxPictPrivPtr pSrcPriv;
        PicturePtr pDst;
        dmxPictPrivPtr pDstPriv;
        PictFormatPtr pFmt;
        XRenderPictFormat *pFormat;
        int size;

        int scrnNum;
        DMXScreenInfo *dmxScreen;

        CARD8 *buffer;
        CARD8 *end;
        int space;

        int nglyph;
        char *glyphs;
        char *curGlyph;

        xGlyphElt *elt;
        int nelt;
        XGlyphElt8 *elts;
        XGlyphElt8 *curElt;

        GlyphSetPtr glyphSet;
        dmxGlyphPrivPtr glyphPriv;

        dixLookupResourceByType((pointer *) &pSrc,
                                stuff->src, PictureType, client, DixReadAccess);

        pSrcPriv = DMX_GET_PICT_PRIV(pSrc);
        if (!pSrcPriv->pict)
            return ret;

        dixLookupResourceByType((pointer *) &pDst,
                                stuff->dst, PictureType,
                                client, DixWriteAccess);

        pDstPriv = DMX_GET_PICT_PRIV(pDst);
        if (!pDstPriv->pict)
            return ret;

        scrnNum = pDst->pDrawable->pScreen->myNum;
        dmxScreen = &dmxScreens[scrnNum];

        /* Note: If the back-end display has been detached, then it
         * should not be possible to reach here since the pSrcPriv->pict
         * and pDstPriv->pict will have already been set to 0.
         */
        if (!dmxScreen->beDisplay)
            return ret;

        if (stuff->maskFormat)
            dixLookupResourceByType((pointer *) &pFmt,
                                    stuff->maskFormat, PictFormatType,
                                    client, DixReadAccess);
        else
            pFmt = NULL;

        pFormat = dmxFindFormat(dmxScreen, pFmt);

        switch (stuff->renderReqType) {
        case X_RenderCompositeGlyphs8:
            size = sizeof(CARD8);
            break;
        case X_RenderCompositeGlyphs16:
            size = sizeof(CARD16);
            break;
        case X_RenderCompositeGlyphs32:
            size = sizeof(CARD32);
            break;
        default:
            return BadPictOp;   /* Can't happen */
        }

        buffer = (CARD8 *) (stuff + 1);
        end = (CARD8 *) stuff + (stuff->length << 2);
        nelt = 0;
        nglyph = 0;
        while (buffer + sizeof(xGlyphElt) < end) {
            elt = (xGlyphElt *) buffer;
            buffer += sizeof(xGlyphElt);

            if (elt->len == 0xff) {
//.........这里部分代码省略.........

/** Validate the picture's attributes before rendering to it.  Update
 *  any picture attributes that have been changed by one of the higher
 *  layers. */
void
dmxValidatePicture(PicturePtr pPicture, Mask mask)
{
    ScreenPtr pScreen = pPicture->pDrawable->pScreen;
    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
    PictureScreenPtr ps = GetPictureScreen(pScreen);
    dmxPictPrivPtr pPictPriv = DMX_GET_PICT_PRIV(pPicture);

    DMX_UNWRAP(ValidatePicture, dmxScreen, ps);

    /* Change picture attributes on back-end server */
    if (pPictPriv->pict) {
        XRenderPictureAttributes attribs;

        if (mask & CPRepeat) {
            attribs.repeat = pPicture->repeatType;
        }
        if (mask & CPAlphaMap) {
            if (pPicture->alphaMap) {
                dmxPictPrivPtr pAlphaPriv;

                pAlphaPriv = DMX_GET_PICT_PRIV(pPicture->alphaMap);
                if (pAlphaPriv->pict) {
                    attribs.alpha_map = pAlphaPriv->pict;
                }
                else {
                    /* FIXME: alpha picture drawable has not been created?? */
                    return;     /* or should this be: attribs.alpha_map = None; */
                }
            }
            else {
                attribs.alpha_map = None;
            }
        }
        if (mask & CPAlphaXOrigin)
            attribs.alpha_x_origin = pPicture->alphaOrigin.x;
        if (mask & CPAlphaYOrigin)
            attribs.alpha_y_origin = pPicture->alphaOrigin.y;
        if (mask & CPClipXOrigin)
            attribs.clip_x_origin = pPicture->clipOrigin.x;
        if (mask & CPClipYOrigin)
            attribs.clip_y_origin = pPicture->clipOrigin.y;
        if (mask & CPClipMask)
            mask &= ~CPClipMask;        /* Handled in ChangePictureClip */
        if (mask & CPGraphicsExposure)
            attribs.graphics_exposures = pPicture->graphicsExposures;
        if (mask & CPSubwindowMode)
            attribs.subwindow_mode = pPicture->subWindowMode;
        if (mask & CPPolyEdge)
            attribs.poly_edge = pPicture->polyEdge;
        if (mask & CPPolyMode)
            attribs.poly_mode = pPicture->polyMode;
        if (mask & CPComponentAlpha)
            attribs.component_alpha = pPicture->componentAlpha;

        XRenderChangePicture(dmxScreen->beDisplay, pPictPriv->pict,
                             mask, &attribs);
        dmxSync(dmxScreen, FALSE);
    }
    else {
        pPictPriv->savedMask |= mask;
    }

#if 1
    if (ps->ValidatePicture)
        ps->ValidatePicture(pPicture, mask);
#endif

    DMX_WRAP(ValidatePicture, dmxValidatePicture, dmxScreen, ps);
}