xenocara/xserver/mi/mifillrct.c

/***********************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
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all copies or substantial portions of the Software.

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in this Software without prior written authorization from The Open Group.

Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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******************************************************************/

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>
#include <X11/Xprotostr.h>
#include "gcstruct.h"
#include "windowstr.h"
#include "pixmap.h"
#include "mi.h"
#include "misc.h"

/* mi rectangles
   written by newman, with debts to all and sundry
*/

/* MIPOLYFILLRECT -- public entry for PolyFillRect request
 * very straight forward: translate rectangles if necessary
 * then call FillSpans to fill each rectangle.  We let FillSpans worry about
 * clipping to the destination
 */
_X_COLD void
miPolyFillRect(DrawablePtr pDrawable, GCPtr pGC, int nrectFill, /* number of rectangles to fill */
               xRectangle *prectInit    /* Pointer to first rectangle to fill */
    )
{
    int i;
    int height;
    int width;
    xRectangle *prect;
    int xorg;
    int yorg;
    int maxheight;
    DDXPointPtr pptFirst;
    DDXPointPtr ppt;
    int *pwFirst;
    int *pw;

    if (pGC->miTranslate) {
        xorg = pDrawable->x;
        yorg = pDrawable->y;
        prect = prectInit;
        maxheight = 0;
        for (i = 0; i < nrectFill; i++, prect++) {
            prect->x += xorg;
            prect->y += yorg;
            maxheight = max(maxheight, prect->height);
        }
    }
    else {
        prect = prectInit;
        maxheight = 0;
        for (i = 0; i < nrectFill; i++, prect++)
            maxheight = max(maxheight, prect->height);
    }

    pptFirst = malloc(maxheight * sizeof(DDXPointRec));
    pwFirst = malloc(maxheight * sizeof(int));
    if (!pptFirst || !pwFirst) {
        free(pwFirst);
        free(pptFirst);
        return;
    }

    prect = prectInit;
    while (nrectFill--) {
        ppt = pptFirst;
        pw = pwFirst;
        height = prect->height;
        width = prect->width;
        xorg = prect->x;
        yorg = prect->y;
        while (height--) {
            *pw++ = width;
            ppt->x = xorg;
            ppt->y = yorg;
            ppt++;
            yorg++;
        }
        (*pGC->ops->FillSpans) (pDrawable, pGC,
                                prect->height, pptFirst, pwFirst, 1);
        prect++;
    }
    free(pwFirst);
    free(pptFirst);
}