C++ RegionNumRects函数代码示例

void
XAAOverWindowExposures(WindowPtr pWin, RegionPtr pReg, RegionPtr pOtherReg)
{
    ScreenPtr pScreen = pWin->drawable.pScreen;
    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCREEN(pScreen);

    if ((pWin->drawable.bitsPerPixel != 8) && infoRec->pScrn->vtSema) {
        if (RegionNumRects(pReg) && infoRec->FillSolidRects) {
            XAAOverlayPtr pOverPriv = GET_OVERLAY_PRIV(pScreen);

            SWITCH_DEPTH(8);
            (*infoRec->FillSolidRects) (infoRec->pScrn,
                                        infoRec->pScrn->colorKey, GXcopy, ~0,
                                        RegionNumRects(pReg),
                                        RegionRects(pReg));
            miWindowExposures(pWin, pReg, pOtherReg);
            return;
        }
        else if (infoRec->NeedToSync) {
            (*infoRec->Sync) (infoRec->pScrn);
            infoRec->NeedToSync = FALSE;
        }
    }

    XAA_SCREEN_PROLOGUE(pScreen, WindowExposures);
    (*pScreen->WindowExposures) (pWin, pReg, pOtherReg);
    XAA_SCREEN_EPILOGUE(pScreen, WindowExposures, XAAOverWindowExposures);
}

void
fbPushImage(DrawablePtr pDrawable,
            GCPtr pGC,
            FbStip * src,
            FbStride srcStride, int srcX, int x, int y, int width, int height)
{
    RegionPtr pClip = fbGetCompositeClip(pGC);
    int nbox;
    BoxPtr pbox;
    int x1, y1, x2, y2;

    for (nbox = RegionNumRects(pClip),
         pbox = RegionRects(pClip); nbox--; pbox++) {
        x1 = x;
        y1 = y;
        x2 = x + width;
        y2 = y + height;
        if (x1 < pbox->x1)
            x1 = pbox->x1;
        if (y1 < pbox->y1)
            y1 = pbox->y1;
        if (x2 > pbox->x2)
            x2 = pbox->x2;
        if (y2 > pbox->y2)
            y2 = pbox->y2;
        if (x1 >= x2 || y1 >= y2)
            continue;
        fbPushFill(pDrawable,
                   pGC,
                   src + (y1 - y) * srcStride,
                   srcStride, srcX + (x1 - x), x1, y1, x2 - x1, y2 - y1);
    }
}

static void
ephyrInternalDamageRedisplay(ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo *screen = pScreenPriv->screen;
    EphyrScrPriv *scrpriv = screen->driver;
    RegionPtr pRegion;

    if (!scrpriv || !scrpriv->pDamage)
        return;

    pRegion = DamageRegion(scrpriv->pDamage);

    if (RegionNotEmpty(pRegion)) {
        int nbox;
        BoxPtr pbox;

        if (ephyr_glamor) {
            ephyr_glamor_damage_redisplay(scrpriv->glamor, pRegion);
        } else {
            nbox = RegionNumRects(pRegion);
            pbox = RegionRects(pRegion);

            while (nbox--) {
                hostx_paint_rect(screen,
                                 pbox->x1, pbox->y1,
                                 pbox->x1, pbox->y1,
                                 pbox->x2 - pbox->x1, pbox->y2 - pbox->y1);
                pbox++;
            }
        }
        DamageEmpty(scrpriv->pDamage);
    }
}

void
fbPolySegment(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg)
{
    void (*seg) (DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg);

    if (pGC->lineWidth == 0) {
        seg = fbZeroSegment;
        if (pGC->fillStyle == FillSolid &&
            pGC->lineStyle == LineSolid &&
            RegionNumRects(fbGetCompositeClip(pGC)) == 1) {
            switch (pDrawable->bitsPerPixel) {
            case 8:
                seg = fbPolySegment8;
                break;
            case 16:
                seg = fbPolySegment16;
                break;
            case 32:
                seg = fbPolySegment32;
                break;
            }
        }
    }
    else {
        seg = miPolySegment;
    }
    (*seg) (pDrawable, pGC, nseg, pseg);
}

static void
glamor_dash_loop(DrawablePtr drawable, GCPtr gc, glamor_program *prog,
                 int n, GLenum mode)
{
    PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
    glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
    int box_index;
    int off_x, off_y;

    glEnable(GL_SCISSOR_TEST);

    glamor_pixmap_loop(pixmap_priv, box_index) {
        int nbox = RegionNumRects(gc->pCompositeClip);
        BoxPtr box = RegionRects(gc->pCompositeClip);

        glamor_set_destination_drawable(drawable, box_index, TRUE, TRUE,
                                        prog->matrix_uniform, &off_x, &off_y);

        while (nbox--) {
            glScissor(box->x1 + off_x,
                      box->y1 + off_y,
                      box->x2 - box->x1,
                      box->y2 - box->y1);
            box++;
            glDrawArrays(mode, 0, n);
        }
    }

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);
    }
}

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);
    }
}

void
miSendExposures(WindowPtr pWin, RegionPtr pRgn, int dx, int dy)
{
    BoxPtr pBox;
    int numRects;
    xEvent *pEvent, *pe;
    int i;

    pBox = RegionRects(pRgn);
    numRects = RegionNumRects(pRgn);
    if (!(pEvent = calloc(1, numRects * sizeof(xEvent))))
        return;

    for (i = numRects, pe = pEvent; --i >= 0; pe++, pBox++) {
        pe->u.u.type = Expose;
        pe->u.expose.window = pWin->drawable.id;
        pe->u.expose.x = pBox->x1 - dx;
        pe->u.expose.y = pBox->y1 - dy;
        pe->u.expose.width = pBox->x2 - pBox->x1;
        pe->u.expose.height = pBox->y2 - pBox->y1;
        pe->u.expose.count = i;
    }

#ifdef PANORAMIX
    if (!noPanoramiXExtension) {
        int scrnum = pWin->drawable.pScreen->myNum;
        int x = 0, y = 0;
        XID realWin = 0;

        if (!pWin->parent) {
            x = screenInfo.screens[scrnum]->x;
            y = screenInfo.screens[scrnum]->y;
            pWin = screenInfo.screens[0]->root;
            realWin = pWin->drawable.id;
        }
        else if (scrnum) {
            PanoramiXRes *win;

            win = PanoramiXFindIDByScrnum(XRT_WINDOW,
                                          pWin->drawable.id, scrnum);
            if (!win) {
                free(pEvent);
                return;
            }
            realWin = win->info[0].id;
            dixLookupWindow(&pWin, realWin, serverClient, DixSendAccess);
        }
        if (x || y || scrnum)
            for (i = 0; i < numRects; i++) {
                pEvent[i].u.expose.window = realWin;
                pEvent[i].u.expose.x += x;
                pEvent[i].u.expose.y += y;
            }
    }
#endif

    DeliverEvents(pWin, pEvent, numRects, NullWindow);

    free(pEvent);
}

void
fbPolyLine(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt, DDXPointPtr ppt)
{
    void (*line) (DrawablePtr, GCPtr, int mode, int npt, DDXPointPtr ppt);

    if (pGC->lineWidth == 0) {
        line = fbZeroLine;
        if (pGC->fillStyle == FillSolid &&
            pGC->lineStyle == LineSolid &&
            RegionNumRects(fbGetCompositeClip(pGC)) == 1) {
            switch (pDrawable->bitsPerPixel) {
            case 8:
                line = fbPolyline8;
                break;
            case 16:
                line = fbPolyline16;
                break;
            case 32:
                line = fbPolyline32;
                break;
            }
        }
    }
    else {
        if (pGC->lineStyle != LineSolid)
            line = miWideDash;
        else
            line = miWideLine;
    }
    (*line) (pDrawable, pGC, mode, npt, ppt);
}

void
shadowUpdateIplan2p4(ScreenPtr pScreen, shadowBufPtr pBuf)
{
    RegionPtr damage = shadowDamage(pBuf);
    PixmapPtr pShadow = pBuf->pPixmap;
    int nbox = RegionNumRects(damage);
    BoxPtr pbox = RegionRects(damage);
    FbBits *shaBase;
    CARD16 *shaLine, *sha;
    FbStride shaStride;
    int scrLine;
    _X_UNUSED int shaBpp, shaXoff, shaYoff;
    int x, y, w, h;
    int i, n;
    CARD16 *win;
    _X_UNUSED CARD32 winSize;
    union {
        CARD8 bytes[8];
        CARD32 words[2];
    } d;

    fbGetDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff,
                  shaYoff);
    shaStride *= sizeof(FbBits) / sizeof(CARD16);

    while (nbox--) {
        x = pbox->x1;
        y = pbox->y1;
        w = pbox->x2 - pbox->x1;
        h = pbox->y2 - pbox->y1;

        scrLine = (x & -16) / 2;
        shaLine = (CARD16 *)shaBase + y * shaStride + scrLine / sizeof(CARD16);

        n = ((x & 15) + w + 15) / 16;   /* number of c2p units in scanline */

        while (h--) {
            sha = shaLine;
            win = (CARD16 *) (*pBuf->window) (pScreen,
                                              y,
                                              scrLine,
                                              SHADOW_WINDOW_WRITE,
                                              &winSize,
                                              pBuf->closure);
            if (!win)
                return;
            for (i = 0; i < n; i++) {
                memcpy(d.bytes, sha, sizeof(d.bytes));
                c2p_16x4(d.words);
                store_iplan2p4(win, d.words);
                sha += sizeof(d.bytes) / sizeof(*sha);
                win += sizeof(d.bytes) / sizeof(*win);
            }
            shaLine += shaStride;
            y++;
        }
        pbox++;
    }
}

void
fbPutZImage (DrawablePtr	pDrawable,
	     RegionPtr		pClip,
	     int		alu,
	     FbBits		pm,
	     int		x,
	     int		y,
	     int		width,
	     int		height,
	     FbStip		*src,
	     FbStride		srcStride)
{
    FbStip	*dst;
    FbStride	dstStride;
    int		dstBpp;
    int		dstXoff, dstYoff;
    int		nbox;
    BoxPtr	pbox;
    int		x1, y1, x2, y2;

    fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);

    for (nbox = RegionNumRects (pClip),
	 pbox = RegionRects(pClip);
	 nbox--;
	 pbox++)
    {
	x1 = x;
	y1 = y;
	x2 = x + width;
	y2 = y + height;
	if (x1 < pbox->x1)
	    x1 = pbox->x1;
	if (y1 < pbox->y1)
	    y1 = pbox->y1;
	if (x2 > pbox->x2)
	    x2 = pbox->x2;
	if (y2 > pbox->y2)
	    y2 = pbox->y2;
	if (x1 >= x2 || y1 >= y2)
	    continue;
	fbBltStip (src + (y1 - y) * srcStride,
		   srcStride,
		   (x1 - x) * dstBpp,

		   dst + (y1 + dstYoff) * dstStride,
		   dstStride,
		   (x1 + dstXoff) * dstBpp,

		   (x2 - x1) * dstBpp,
		   (y2 - y1),

		   alu,
		   pm,
		   dstBpp);
    }

    fbFinishAccess (pDrawable);
}

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);
}

/*
 * Create and display a new frame.
 */
static Bool
xprCreateFrame(RootlessWindowPtr pFrame, ScreenPtr pScreen,
               int newX, int newY, RegionPtr pShape)
{
    WindowPtr pWin = pFrame->win;
    xp_window_changes wc;
    unsigned int mask = 0;
    xp_error err;

    wc.x = newX;
    wc.y = newY;
    wc.width = pFrame->width;
    wc.height = pFrame->height;
    wc.bit_gravity = XP_GRAVITY_NONE;
    mask |= XP_BOUNDS;

    if (pWin->drawable.depth == 8) {
        wc.depth = XP_DEPTH_INDEX8;
        wc.colormap = xprColormapCallback;
        wc.colormap_data = pScreen;
        mask |= XP_COLORMAP;
    }
    else if (pWin->drawable.depth == 15)
        wc.depth = XP_DEPTH_RGB555;
    else if (pWin->drawable.depth == 24)
        wc.depth = XP_DEPTH_ARGB8888;
    else
        wc.depth = XP_DEPTH_NIL;
    mask |= XP_DEPTH;

    if (pShape != NULL) {
        wc.shape_nrects = RegionNumRects(pShape);
        wc.shape_rects = RegionRects(pShape);
        wc.shape_tx = wc.shape_ty = 0;
        mask |= XP_SHAPE;
    }

    pFrame->level =
        !IsRoot(pWin) ? AppleWMWindowLevelNormal : AppleWMNumWindowLevels;

    if (XQuartzIsRootless)
        wc.window_level = normal_window_levels[pFrame->level];
    else if (XQuartzShieldingWindowLevel)
        wc.window_level = XQuartzShieldingWindowLevel + 1;
    else
        wc.window_level = rooted_window_levels[pFrame->level];
    mask |= XP_WINDOW_LEVEL;

    err = xp_create_window(mask, &wc, (xp_window_id *)&pFrame->wid);

    if (err != Success) {
        return FALSE;
    }

#ifdef HAVE_LIBDISPATCH
    dispatch_async(window_hash_serial_q, ^ {
                       x_hash_table_insert(window_hash, pFrame->wid, pFrame);
                   });

/*
 * Compute the visibility of a shaped window
 */
int
miShapedWindowIn (RegionPtr universe, RegionPtr bounding,
                  BoxPtr rect, int x, int y)
{
    BoxRec  	box;
    BoxPtr	boundBox;
    int		nbox;
    Bool	someIn, someOut;
    int 	t, x1, y1, x2, y2;

    nbox = RegionNumRects (bounding);
    boundBox = RegionRects (bounding);
    someIn = someOut = FALSE;
    x1 = rect->x1;
    y1 = rect->y1;
    x2 = rect->x2;
    y2 = rect->y2;
    while (nbox--)
    {
	if ((t = boundBox->x1 + x) < x1)
	    t = x1;
	box.x1 = t;
	if ((t = boundBox->y1 + y) < y1)
	    t = y1;
	box.y1 = t;
	if ((t = boundBox->x2 + x) > x2)
	    t = x2;
	box.x2 = t;
	if ((t = boundBox->y2 + y) > y2)
	    t = y2;
	box.y2 = t;
	if (box.x1 > box.x2)
	    box.x2 = box.x1;
	if (box.y1 > box.y2)
	    box.y2 = box.y1;
	switch (RegionContainsRect(universe, &box))
	{
	case rgnIN:
	    if (someOut)
		return rgnPART;
	    someIn = TRUE;
	    break;
	case rgnOUT:
	    if (someIn)
		return rgnPART;
	    someOut = TRUE;
	    break;
	default:
	    return rgnPART;
	}
	boundBox++;
    }
    if (someIn)
	return rgnIN;
    return rgnOUT;
}

static void
glamor_glyphs_flush(CARD8 op, PicturePtr src, PicturePtr dst,
                   glamor_program *prog,
                   struct glamor_glyph_atlas *atlas, int nglyph)
{
    DrawablePtr drawable = dst->pDrawable;
    glamor_screen_private *glamor_priv = glamor_get_screen_private(drawable->pScreen);
    PixmapPtr atlas_pixmap = atlas->atlas;
    glamor_pixmap_private *atlas_priv = glamor_get_pixmap_private(atlas_pixmap);
    glamor_pixmap_fbo *atlas_fbo = glamor_pixmap_fbo_at(atlas_priv, 0, 0);
    PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
    glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
    int box_x, box_y;
    int off_x, off_y;

    glamor_put_vbo_space(drawable->pScreen);

    glEnable(GL_SCISSOR_TEST);
    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, atlas_fbo->tex);

    for (;;) {
        if (!glamor_use_program_render(prog, op, src, dst))
            break;

        glUniform1i(prog->atlas_uniform, 1);

        glamor_pixmap_loop(pixmap_priv, box_x, box_y) {
            BoxPtr box = RegionRects(dst->pCompositeClip);
            int nbox = RegionNumRects(dst->pCompositeClip);

            glamor_set_destination_drawable(drawable, box_x, box_y, TRUE, FALSE, prog->matrix_uniform, &off_x, &off_y);

            /* Run over the clip list, drawing the glyphs
             * in each box
             */

            while (nbox--) {
                glScissor(box->x1 + off_x,
                          box->y1 + off_y,
                          box->x2 - box->x1,
                          box->y2 - box->y1);
                box++;

                if (glamor_glyph_use_130(glamor_priv))
                    glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nglyph);
                else
                    glamor_glDrawArrays_GL_QUADS(glamor_priv, nglyph);
            }
        }
        if (prog->alpha != glamor_program_alpha_ca_first)
            break;
        prog++;
    }