C++ RegionUninit函数代码示例

Bool
exaDestroyPixmap_classic(PixmapPtr pPixmap)
{
    ScreenPtr pScreen = pPixmap->drawable.pScreen;

    ExaScreenPriv(pScreen);
    Bool ret;

    if (pPixmap->refcnt == 1) {
        ExaPixmapPriv(pPixmap);

        exaDestroyPixmap(pPixmap);

        if (pExaPixmap->area) {
            DBG_PIXMAP(("-- 0x%p (0x%x) (%dx%d)\n",
                        (void *) pPixmap->drawable.id,
                        ExaGetPixmapPriv(pPixmap)->area->offset,
                        pPixmap->drawable.width, pPixmap->drawable.height));
            /* Free the offscreen area */
            exaOffscreenFree(pPixmap->drawable.pScreen, pExaPixmap->area);
            pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
            pPixmap->devKind = pExaPixmap->sys_pitch;
        }
        RegionUninit(&pExaPixmap->validSys);
        RegionUninit(&pExaPixmap->validFB);
    }

    swap(pExaScr, pScreen, DestroyPixmap);
    ret = pScreen->DestroyPixmap(pPixmap);
    swap(pExaScr, pScreen, DestroyPixmap);

    return ret;
}

static void
ShadowCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgn)
{
    ScreenPtr pScreen = pWin->drawable.pScreen;
    ShadowScreenPtr pPriv = GET_SCREEN_PRIVATE(pScreen);
    int num = 0;
    RegionRec rgnDst;

    if (pPriv->vtSema) {
        RegionNull(&rgnDst);
        RegionCopy(&rgnDst, prgn);

        RegionTranslate(&rgnDst,
                        pWin->drawable.x - ptOldOrg.x,
                        pWin->drawable.y - ptOldOrg.y);
        RegionIntersect(&rgnDst, &pWin->borderClip, &rgnDst);
        if ((num = RegionNumRects(&rgnDst))) {
            if (pPriv->preRefresh)
                (*pPriv->preRefresh) (pPriv->pScrn, num, RegionRects(&rgnDst));
        }
        else {
            RegionUninit(&rgnDst);
        }
    }

    pScreen->CopyWindow = pPriv->CopyWindow;
    (*pScreen->CopyWindow) (pWin, ptOldOrg, prgn);
    pScreen->CopyWindow = ShadowCopyWindow;

    if (num) {
        if (pPriv->postRefresh)
            (*pPriv->postRefresh) (pPriv->pScrn, num, RegionRects(&rgnDst));
        RegionUninit(&rgnDst);
    }
}

/*****
 *  miHandleValidateExposures(pWin)
 *    starting at pWin, draw background in any windows that have exposure
 *    regions, translate the regions, restore any backing store,
 *    and then send any regions still exposed to the client
 *****/
void
miHandleValidateExposures(WindowPtr pWin)
{
    WindowPtr pChild;
    ValidatePtr val;
    WindowExposuresProcPtr WindowExposures;

    pChild = pWin;
    WindowExposures = pChild->drawable.pScreen->WindowExposures;
    while (1) {
        if ((val = pChild->valdata)) {
            if (RegionNotEmpty(&val->after.borderExposed))
                miPaintWindow(pChild, &val->after.borderExposed, PW_BORDER);
            RegionUninit(&val->after.borderExposed);
            (*WindowExposures) (pChild, &val->after.exposed, NullRegion);
            RegionUninit(&val->after.exposed);
            free(val);
            pChild->valdata = NULL;
            if (pChild->firstChild) {
                pChild = pChild->firstChild;
                continue;
            }
        }
        while (!pChild->nextSib && (pChild != pWin))
            pChild = pChild->parent;
        if (pChild == pWin)
            break;
        pChild = pChild->nextSib;
    }
}

void
XAACopyWindow(
    WindowPtr pWin,
    DDXPointRec ptOldOrg,
    RegionPtr prgnSrc )
{
    DDXPointPtr pptSrc, ppt;
    RegionRec rgnDst;
    BoxPtr pbox;
    int dx, dy, nbox;
    WindowPtr pwinRoot;
    ScreenPtr pScreen = pWin->drawable.pScreen;
    XAAInfoRecPtr infoRec = 
	GET_XAAINFORECPTR_FROM_DRAWABLE((&pWin->drawable));

    if (!infoRec->pScrn->vtSema || !infoRec->ScreenToScreenBitBlt) { 
	XAA_SCREEN_PROLOGUE (pScreen, CopyWindow);
	if(infoRec->pScrn->vtSema && infoRec->NeedToSync) {
	    (*infoRec->Sync)(infoRec->pScrn);
	    infoRec->NeedToSync = FALSE;
	}
        (*pScreen->CopyWindow) (pWin, ptOldOrg, prgnSrc);
	XAA_SCREEN_EPILOGUE (pScreen, CopyWindow, XAACopyWindow);
    	return;
    }

    pwinRoot = pScreen->root;

    RegionNull(&rgnDst);

    dx = ptOldOrg.x - pWin->drawable.x;
    dy = ptOldOrg.y - pWin->drawable.y;
    RegionTranslate(prgnSrc, -dx, -dy);
    RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);

    pbox = RegionRects(&rgnDst);
    nbox = RegionNumRects(&rgnDst);
    if(!nbox || 
      !(pptSrc = (DDXPointPtr )malloc(nbox * sizeof(DDXPointRec)))) {
	RegionUninit(&rgnDst);
	return;
    }
    ppt = pptSrc;

    while(nbox--) {
	ppt->x = pbox->x1 + dx;
	ppt->y = pbox->y1 + dy;
	ppt++; pbox++;
    }
    
    infoRec->ScratchGC.planemask = ~0L;
    infoRec->ScratchGC.alu = GXcopy;

    XAADoBitBlt((DrawablePtr)pwinRoot, (DrawablePtr)pwinRoot,
        		&(infoRec->ScratchGC), &rgnDst, pptSrc);

    free(pptSrc);
    RegionUninit(&rgnDst);
}

void
ExaCheckCopyNtoN(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
                 BoxPtr pbox, int nbox, int dx, int dy, Bool reverse,
                 Bool upsidedown, Pixel bitplane, void *closure)
{
    RegionRec reg;
    int xoff, yoff;

    EXA_PRE_FALLBACK_GC(pGC);
    EXA_FALLBACK(("from %p to %p (%c,%c)\n", pSrc, pDst,
                  exaDrawableLocation(pSrc), exaDrawableLocation(pDst)));

    if (pExaScr->prepare_access_reg && RegionInitBoxes(&reg, pbox, nbox)) {
        PixmapPtr pPixmap = exaGetDrawablePixmap(pSrc);

        exaGetDrawableDeltas(pSrc, pPixmap, &xoff, &yoff);
        RegionTranslate(&reg, xoff + dx, yoff + dy);
        pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_SRC, &reg);
        RegionUninit(&reg);
    }
    else
        exaPrepareAccess(pSrc, EXA_PREPARE_SRC);

    if (pExaScr->prepare_access_reg &&
        !exaGCReadsDestination(pDst, pGC->planemask, pGC->fillStyle,
                               pGC->alu, pGC->clientClipType) &&
        RegionInitBoxes(&reg, pbox, nbox)) {
        PixmapPtr pPixmap = exaGetDrawablePixmap(pDst);

        exaGetDrawableDeltas(pDst, pPixmap, &xoff, &yoff);
        RegionTranslate(&reg, xoff, yoff);
        pExaScr->prepare_access_reg(pPixmap, EXA_PREPARE_DEST, &reg);
        RegionUninit(&reg);
    }
    else
        exaPrepareAccess(pDst, EXA_PREPARE_DEST);

    /* This will eventually call fbCopyNtoN, with some calculation overhead. */
    while (nbox--) {
        pGC->ops->CopyArea(pSrc, pDst, pGC, pbox->x1 - pSrc->x + dx,
                           pbox->y1 - pSrc->y + dy, pbox->x2 - pbox->x1,
                           pbox->y2 - pbox->y1, pbox->x1 - pDst->x,
                           pbox->y1 - pDst->y);
        pbox++;
    }
    exaFinishAccess(pSrc, EXA_PREPARE_SRC);
    exaFinishAccess(pDst, EXA_PREPARE_DEST);
    EXA_POST_FALLBACK_GC(pGC);
}

Bool
compAllocPixmap(WindowPtr pWin)
{
    int bw = (int) pWin->borderWidth;
    int x = pWin->drawable.x - bw;
    int y = pWin->drawable.y - bw;
    int w = pWin->drawable.width + (bw << 1);
    int h = pWin->drawable.height + (bw << 1);
    PixmapPtr pPixmap = compNewPixmap(pWin, x, y, w, h);
    CompWindowPtr cw = GetCompWindow(pWin);

    if (!pPixmap)
        return FALSE;
    if (cw->update == CompositeRedirectAutomatic)
        pWin->redirectDraw = RedirectDrawAutomatic;
    else
        pWin->redirectDraw = RedirectDrawManual;

    compSetPixmap(pWin, pPixmap);
    cw->oldx = COMP_ORIGIN_INVALID;
    cw->oldy = COMP_ORIGIN_INVALID;
    cw->damageRegistered = FALSE;
    if (cw->update == CompositeRedirectAutomatic) {
        DamageRegister(&pWin->drawable, cw->damage);
        cw->damageRegistered = TRUE;
    }

    /* Make sure our borderClip is up to date */
    RegionUninit(&cw->borderClip);
    RegionCopy(&cw->borderClip, &pWin->borderClip);
    cw->borderClipX = pWin->drawable.x;
    cw->borderClipY = pWin->drawable.y;

    return TRUE;
}

static void
ExaFallbackPrepareReg(DrawablePtr pDrawable,
                      GCPtr pGC,
                      int x, int y, int width, int height,
                      int index, Bool checkReads)
{
    ScreenPtr pScreen = pDrawable->pScreen;

    ExaScreenPriv(pScreen);

    if (pExaScr->prepare_access_reg &&
        !(checkReads && exaGCReadsDestination(pDrawable,
                                              pGC->planemask,
                                              pGC->fillStyle,
                                              pGC->alu, pGC->clientClipType))) {
        BoxRec box;
        RegionRec reg;
        int xoff, yoff;
        PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);

        exaGetDrawableDeltas(pDrawable, pPixmap, &xoff, &yoff);
        box.x1 = pDrawable->x + x + xoff;
        box.y1 = pDrawable->y + y + yoff;
        box.x2 = box.x1 + width;
        box.y2 = box.y1 + height;

        RegionInit(&reg, &box, 1);
        pExaScr->prepare_access_reg(pPixmap, index, &reg);
        RegionUninit(&reg);
    }
    else
        exaPrepareAccess(pDrawable, index);
}

static RegionPtr
rdpCopyAreaWndToPixmap(WindowPtr pSrcWnd,
                       PixmapPtr pDstPixmap, rdpPixmapRec *pDstPriv,
                       GCPtr pGC, int srcx, int srcy, int w, int h,
                       int dstx, int dsty)
{
    int cd;
    int lsrcx;
    int lsrcy;
    int ldstx;
    int ldsty;
    int num_clips;
    int j;
    BoxRec box;
    RegionPtr rv;
    RegionRec clip_reg;

    LLOGLN(10, ("rdpCopyAreaWndToPixmap:"));
    RegionInit(&clip_reg, NullBox, 0);
    cd = rdp_get_clip(&clip_reg, &(pDstPixmap->drawable), pGC);
    lsrcx = pSrcWnd->drawable.x + srcx;
    lsrcy = pSrcWnd->drawable.y + srcy;
    ldstx = pDstPixmap->drawable.x + dstx;
    ldsty = pDstPixmap->drawable.y + dsty;

    if (cd == 1)
    {
        rdpup_switch_os_surface(pDstPriv->rdpindex);
        rdpup_begin_update();
        rdpup_screen_blt(ldstx, ldsty, w, h, lsrcx, lsrcy);
        rdpup_end_update();
        rdpup_switch_os_surface(-1);
    }
    else if (cd == 2)
    {
        num_clips = REGION_NUM_RECTS(&clip_reg);

        if (num_clips > 0)
        {
            rdpup_switch_os_surface(pDstPriv->rdpindex);
            rdpup_begin_update();

            for (j = 0; j < num_clips; j++)
            {
                box = REGION_RECTS(&clip_reg)[j];
                rdpup_set_clip(box.x1, box.y1, box.x2 - box.x1, box.y2 - box.y1);
                rdpup_screen_blt(ldstx, ldsty, w, h, lsrcx, lsrcy);
            }

            rdpup_reset_clip();
            rdpup_end_update();
            rdpup_switch_os_surface(-1);
        }
    }

    RegionUninit(&clip_reg);
    rv = rdpCopyAreaOrg(&(pSrcWnd->drawable), &(pDstPixmap->drawable),
                        pGC, srcx, srcy, w, h, dstx, dsty);
    return rv;
}

void
miWindowExposures(WindowPtr pWin, RegionPtr prgn)
{
    RegionPtr exposures = prgn;

    if (prgn && !RegionNil(prgn)) {
        RegionRec expRec;
        int clientInterested =
            (pWin->eventMask | wOtherEventMasks(pWin)) & ExposureMask;
        if (clientInterested && (RegionNumRects(prgn) > RECTLIMIT)) {
            /*
             * If we have LOTS of rectangles, we decide to take the extents
             * and force an exposure on that.  This should require much less
             * work overall, on both client and server.  This is cheating, but
             * isn't prohibited by the protocol ("spontaneous combustion" :-).
             */
            BoxRec box = *RegionExtents(prgn);
            exposures = &expRec;
            RegionInit(exposures, &box, 1);
            RegionReset(prgn, &box);
            /* miPaintWindow doesn't clip, so we have to */
            RegionIntersect(prgn, prgn, &pWin->clipList);
        }
        pWin->drawable.pScreen->PaintWindow(pWin, prgn, PW_BACKGROUND);
        if (clientInterested)
            miSendExposures(pWin, exposures,
                            pWin->drawable.x, pWin->drawable.y);
        if (exposures == &expRec)
            RegionUninit(exposures);
        RegionEmpty(prgn);
    }
}

RegionPtr
rdpRestoreAreas(WindowPtr pWin, RegionPtr prgnExposed)
{
    RegionRec reg;
    RegionPtr rv;
    int j;
    BoxRec box;

    LLOGLN(0, ("in rdpRestoreAreas"));
    RegionInit(&reg, NullBox, 0);
    RegionCopy(&reg, prgnExposed);
    g_pScreen->RestoreAreas = g_rdpScreen.RestoreAreas;
    rv = g_pScreen->RestoreAreas(pWin, prgnExposed);

    if (g_do_dirty_ons)
    {
        draw_item_add_img_region(&g_screenPriv, &reg, GXcopy, RDI_IMGLL);
    }
    else
    {
        rdpup_begin_update();

        for (j = REGION_NUM_RECTS(&reg) - 1; j >= 0; j--)
        {
            box = REGION_RECTS(&reg)[j];
            rdpup_send_area(0, box.x1, box.y1, box.x2 - box.x1, box.y2 - box.y1);
        }

        rdpup_end_update();
    }

    RegionUninit(&reg);
    g_pScreen->RestoreAreas = rdpRestoreAreas;
    return rv;
}

static void
xf86CrtcDamageShadow(xf86CrtcPtr crtc)
{
    ScrnInfoPtr pScrn = crtc->scrn;
    BoxRec damage_box;
    RegionRec damage_region;
    ScreenPtr pScreen = xf86ScrnToScreen(pScrn);

    damage_box.x1 = 0;
    damage_box.x2 = crtc->mode.HDisplay;
    damage_box.y1 = 0;
    damage_box.y2 = crtc->mode.VDisplay;
    if (!pixman_transform_bounds(&crtc->crtc_to_framebuffer, &damage_box)) {
        damage_box.x1 = 0;
        damage_box.y1 = 0;
        damage_box.x2 = pScreen->width;
        damage_box.y2 = pScreen->height;
    }
    if (damage_box.x1 < 0)
        damage_box.x1 = 0;
    if (damage_box.y1 < 0)
        damage_box.y1 = 0;
    if (damage_box.x2 > pScreen->width)
        damage_box.x2 = pScreen->width;
    if (damage_box.y2 > pScreen->height)
        damage_box.y2 = pScreen->height;
    RegionInit(&damage_region, &damage_box, 1);
    DamageDamageRegion(&(*pScreen->GetScreenPixmap) (pScreen)->drawable,
                       &damage_region);
    RegionUninit(&damage_region);
    crtc->shadowClear = TRUE;
}

void
fbCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
{
    RegionRec rgnDst;
    int dx, dy;

    PixmapPtr pPixmap = fbGetWindowPixmap(pWin);
    DrawablePtr pDrawable = &pPixmap->drawable;

    dx = ptOldOrg.x - pWin->drawable.x;
    dy = ptOldOrg.y - pWin->drawable.y;
    RegionTranslate(prgnSrc, -dx, -dy);

    RegionNull(&rgnDst);

    RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);

#ifdef COMPOSITE
    if (pPixmap->screen_x || pPixmap->screen_y)
        RegionTranslate(&rgnDst, -pPixmap->screen_x, -pPixmap->screen_y);
#endif

    miCopyRegion(pDrawable, pDrawable,
                 0, &rgnDst, dx, dy, fbCopyWindowProc, 0, 0);

    RegionUninit(&rgnDst);
    fbValidateDrawable(&pWin->drawable);
}

/* draw from an off screen pixmap to a visible window */
static RegionPtr
rdpCopyAreaPixmapToWnd(PixmapPtr pSrcPixmap, rdpPixmapRec *pSrcPriv,
                       WindowPtr pDstWnd, GCPtr pGC,
                       int srcx, int srcy, int w, int h,
                       int dstx, int dsty)
{
    int lsrcx;
    int lsrcy;
    int ldstx;
    int ldsty;
    int cd;
    int j;
    int num_clips;
    RegionPtr rv;
    RegionRec clip_reg;
    BoxRec box;

    LLOGLN(10, ("rdpCopyAreaPixmapToWnd:"));
    RegionInit(&clip_reg, NullBox, 0);
    cd = rdp_get_clip(&clip_reg, &(pDstWnd->drawable), pGC);
    ldstx = pDstWnd->drawable.x + dstx;
    ldsty = pDstWnd->drawable.y + dsty;
    lsrcx = pSrcPixmap->drawable.x + srcx;
    lsrcy = pSrcPixmap->drawable.y + srcy;

    if (cd == 1)
    {
        rdpup_begin_update();
        rdpup_paint_rect_os(ldstx, ldsty, w, h, pSrcPriv->rdpindex, lsrcx, lsrcy);
        rdpup_end_update();
    }
    else if (cd == 2)
    {
        num_clips = REGION_NUM_RECTS(&clip_reg);

        if (num_clips > 0)
        {
            rdpup_begin_update();
            LLOGLN(10, ("rdpCopyAreaPixmapToWnd: num_clips %d", num_clips));

            for (j = 0; j < num_clips; j++)
            {
                box = REGION_RECTS(&clip_reg)[j];
                LLOGLN(10, ("rdpCopyAreaPixmapToWnd: %d %d %d %d", box.x1, box.y1, box.x2, box.y2));
                rdpup_set_clip(box.x1, box.y1, box.x2 - box.x1, box.y2 - box.y1);
                LLOGLN(10, ("rdpCopyAreaPixmapToWnd: %d %d", w, h));
                rdpup_paint_rect_os(ldstx, ldsty, w, h, pSrcPriv->rdpindex, lsrcx, lsrcy);
            }

            rdpup_reset_clip();
            rdpup_end_update();
        }
    }

    RegionUninit(&clip_reg);
    rv = rdpCopyAreaOrg(&(pSrcPixmap->drawable), &(pDstWnd->drawable),
                        pGC, srcx, srcy, w, h, dstx, dsty);
    return rv;
}

/*
 * Free one of the per-client per-window resources, clearing
 * redirect and the per-window pointer as appropriate
 */
void
compFreeClientWindow (WindowPtr pWin, XID id)
{
    ScreenPtr		pScreen = pWin->drawable.pScreen;
    CompWindowPtr	cw = GetCompWindow (pWin);
    CompClientWindowPtr	ccw, *prev;
    Bool		anyMarked = FALSE;
    WindowPtr		pLayerWin;
    PixmapPtr           pPixmap = NULL;

    if (!cw)
	return;
    for (prev = &cw->clients; (ccw = *prev); prev = &ccw->next)
    {
	if (ccw->id == id)
	{
	    *prev = ccw->next;
	    if (ccw->update == CompositeRedirectManual)
		cw->update = CompositeRedirectAutomatic;
	    free(ccw);
	    break;
	}
    }
    if (!cw->clients)
    {
	anyMarked = compMarkWindows (pWin, &pLayerWin);
    
	if (pWin->redirectDraw != RedirectDrawNone) {
	    pPixmap = (*pScreen->GetWindowPixmap) (pWin);
	    compSetParentPixmap (pWin);
	}

	if (cw->damage)
	    DamageDestroy (cw->damage);
	
	RegionUninit(&cw->borderClip);
    
	dixSetPrivate(&pWin->devPrivates, CompWindowPrivateKey, NULL);
	free(cw);
    }
    else if (cw->update == CompositeRedirectAutomatic &&
	     !cw->damageRegistered && pWin->redirectDraw != RedirectDrawNone)
    {
	anyMarked = compMarkWindows (pWin, &pLayerWin);

	DamageRegister (&pWin->drawable, cw->damage);
	cw->damageRegistered = TRUE;
	pWin->redirectDraw = RedirectDrawAutomatic;
	DamageDamageRegion(&pWin->drawable, &pWin->borderSize);
    }

    if (anyMarked)
	compHandleMarkedWindows (pWin, pLayerWin);

    if (pPixmap) {
	compRestoreWindow (pWin, pPixmap);
	(*pScreen->DestroyPixmap) (pPixmap);
    }
}

/*
 * Free one of the per-client per-window resources, clearing
 * redirect and the per-window pointer as appropriate
 */
void
compFreeClientWindow (WindowPtr pWin, XID id)
{
    CompWindowPtr	cw = GetCompWindow (pWin);
    CompClientWindowPtr	ccw, *prev;
    Bool		wasMapped = pWin->mapped;

    if (!cw)
	return;
    for (prev = &cw->clients; (ccw = *prev); prev = &ccw->next)
    {
	if (ccw->id == id)
	{
	    *prev = ccw->next;
	    if (ccw->update == CompositeRedirectManual)
		cw->update = CompositeRedirectAutomatic;
	    free(ccw);
	    break;
	}
    }
    if (!cw->clients)
    {
	if (wasMapped)
	{
	    DisableMapUnmapEvents (pWin);
	    UnmapWindow (pWin, FALSE);
	    EnableMapUnmapEvents (pWin);
	}
    
	if (pWin->redirectDraw != RedirectDrawNone)
	    compFreePixmap (pWin);

	if (cw->damage)
	    DamageDestroy (cw->damage);
	
	RegionUninit(&cw->borderClip);
    
	dixSetPrivate(&pWin->devPrivates, CompWindowPrivateKey, NULL);
	free(cw);
    }
    else if (cw->update == CompositeRedirectAutomatic &&
	     !cw->damageRegistered && pWin->redirectDraw != RedirectDrawNone)
    {
	DamageRegister (&pWin->drawable, cw->damage);
	cw->damageRegistered = TRUE;
	pWin->redirectDraw = RedirectDrawAutomatic;
	DamageRegionAppend(&pWin->drawable, &pWin->borderSize);
    }
    if (wasMapped && !pWin->mapped)
    {
	Bool	overrideRedirect = pWin->overrideRedirect;
	pWin->overrideRedirect = TRUE;
	DisableMapUnmapEvents (pWin);
	MapWindow (pWin, clients[CLIENT_ID(id)]);
	EnableMapUnmapEvents (pWin);
	pWin->overrideRedirect = overrideRedirect;
    }
}