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Annotation of researchv9/X11/src/X.V11R1/server/ddx/mfb/mfbimage.c, revision 1.1

1.1     ! root        1: /***********************************************************
        !             2: Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
        !             3: and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
        !             4: 
        !             5:                         All Rights Reserved
        !             6: 
        !             7: Permission to use, copy, modify, and distribute this software and its 
        !             8: documentation for any purpose and without fee is hereby granted, 
        !             9: provided that the above copyright notice appear in all copies and that
        !            10: both that copyright notice and this permission notice appear in 
        !            11: supporting documentation, and that the names of Digital or MIT not be
        !            12: used in advertising or publicity pertaining to distribution of the
        !            13: software without specific, written prior permission.  
        !            14: 
        !            15: DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            16: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            17: DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            18: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            19: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            20: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            21: SOFTWARE.
        !            22: 
        !            23: ******************************************************************/
        !            24: /* $Header: mfbimage.c,v 1.31 87/09/07 19:07:51 rws Exp $ */
        !            25: 
        !            26: #include "X.h"
        !            27: 
        !            28: #include "windowstr.h"
        !            29: #include "pixmapstr.h"
        !            30: #include "scrnintstr.h"
        !            31: #include "gcstruct.h"
        !            32: 
        !            33: #include "mfb.h"
        !            34: #include "mi.h"
        !            35: #include "Xmd.h"
        !            36: 
        !            37: #include "maskbits.h"
        !            38: 
        !            39: #include "servermd.h"
        !            40: 
        !            41: /* Put and Get images on a monochrome frame buffer
        !            42:  *
        !            43:  *   we do this by creating a temporary pixmap and making its
        !            44:  * pointer to bits point to the buffer read in from the client.
        !            45:  * this works because of the padding rules specified at startup
        !            46:  *
        !            47:  * Note that CopyArea must know how to copy a bitmap into the server-format
        !            48:  * temporary pixmap.
        !            49:  *
        !            50:  * For speed, mfbPutImage should allocate the temporary pixmap on the stack.
        !            51:  *
        !            52:  *     even though an XYBitmap and an XYPixmap have the same
        !            53:  * format (for this device), PutImage has different semantics for the
        !            54:  * two.  XYPixmap just does the copy; XYBitmap takes gc.fgPixel for
        !            55:  * a 1 bit, gc.bgPixel for a 0 bit, which we notice is exactly
        !            56:  * like CopyPlane.
        !            57:  *
        !            58:  *   written by drewry, september 1986
        !            59:  */
        !            60: 
        !            61: 
        !            62: void
        !            63: mfbPutImage(dst, pGC, depth, x, y, w, h, leftPad, format, pImage)
        !            64:     DrawablePtr dst;
        !            65:     GCPtr      pGC;
        !            66:     int                depth, x, y, w, h;
        !            67:     int leftPad;
        !            68:     unsigned int format;
        !            69:     int        *pImage;
        !            70: {
        !            71:     pointer    pbits;
        !            72:     PixmapPtr  pFakePixmap;
        !            73: 
        !            74:     if (!(pGC->planemask & 1))
        !            75:        return;
        !            76: 
        !            77:     /* 0 may confuse CreatePixmap, and will sometimes be
        !            78:        passed by the mi text code
        !            79:     */
        !            80:     if ((w == 0) || (h == 0))
        !            81:        return;
        !            82: 
        !            83:     /* mfb is always depth 1 */
        !            84:     pFakePixmap = (PixmapPtr)mfbCreatePixmap(dst->pScreen, w+leftPad, h, 1);
        !            85:     if (!pFakePixmap)
        !            86:     {
        !            87:        ErrorF( "mfbPutImage can't make temp pixmap\n");
        !            88:        return;
        !            89:     }
        !            90: 
        !            91:     pbits = pFakePixmap->devPrivate;
        !            92:     pFakePixmap->devPrivate = (pointer)pImage;
        !            93:     ((mfbPrivGC *)(pGC->devPriv))->fExpose = FALSE;
        !            94:     if (format == XYPixmap)
        !            95:        (*pGC->CopyArea)(pFakePixmap, dst, pGC, leftPad, 0, w, h, x, y);
        !            96:     else
        !            97:        (*pGC->CopyPlane)(pFakePixmap, dst, pGC, leftPad, 0, w, h, x, y, 1);
        !            98:     ((mfbPrivGC*)(pGC->devPriv))->fExpose = TRUE;
        !            99:     pFakePixmap->devPrivate = pbits;
        !           100:     (*dst->pScreen->DestroyPixmap)(pFakePixmap);
        !           101: }
        !           102: 
        !           103: 
        !           104: /*
        !           105:  * pdstLine points to space allocated by caller, which he can do since
        !           106:  * he knows dimensions of the pixmap
        !           107:  * we can call mfbDoBitblt because the dispatcher has promised not to send us
        !           108:  * anything that would require going over the edge of the screen.
        !           109:  *
        !           110:  *     XYPixmap and ZPixmap are the same for mfb.
        !           111:  *     For any planemask with bit 0 == 0, just fill the dst with 0.
        !           112:  */
        !           113: void
        !           114: mfbGetImage( pDrawable, sx, sy, w, h, format, planeMask, pdstLine)
        !           115:     DrawablePtr pDrawable;
        !           116:     int                sx, sy, w, h;
        !           117:     unsigned int format;
        !           118:     unsigned int planeMask;
        !           119:     pointer    pdstLine;
        !           120: {
        !           121:     int xorg, yorg;
        !           122:     PixmapPtr pPixmap;
        !           123:     BoxRec box;
        !           124:     DDXPointRec ptSrc;
        !           125:     RegionPtr prgnDst;
        !           126:     pointer pspare;
        !           127: 
        !           128:     if (planeMask & 0x1)
        !           129:     {
        !           130:         if (pDrawable->type == DRAWABLE_WINDOW)
        !           131:         {
        !           132:            xorg = ((WindowPtr)pDrawable)->absCorner.x;
        !           133:            yorg = ((WindowPtr)pDrawable)->absCorner.y;
        !           134:         }
        !           135:         else
        !           136:         {
        !           137:            xorg = 0;
        !           138:            yorg = 0;
        !           139:         }
        !           140: 
        !           141:         sx += xorg;
        !           142:         sy += yorg;
        !           143: 
        !           144:         pPixmap = (PixmapPtr)mfbCreatePixmap(pDrawable->pScreen, w, h, 1);
        !           145:         pspare = pPixmap->devPrivate;
        !           146:         pPixmap->devPrivate = pdstLine;
        !           147:         ptSrc.x = sx;
        !           148:         ptSrc.y = sy;
        !           149:         box.x1 = 0;
        !           150:         box.y1 = 0;
        !           151:         box.x2 = w;
        !           152:         box.y2 = h;
        !           153: 
        !           154:         prgnDst = (*pDrawable->pScreen->RegionCreate)(&box, 1);
        !           155:         mfbDoBitblt(pDrawable, pPixmap, GXcopy, prgnDst, &ptSrc);
        !           156:         (*pDrawable->pScreen->RegionDestroy)(prgnDst);
        !           157:         pPixmap->devPrivate = pspare;
        !           158:         mfbDestroyPixmap(pPixmap);
        !           159:     }
        !           160:     else
        !           161:     {
        !           162:        bzero(pdstLine, PixmapBytePad(w, 1) * h);
        !           163:     }
        !           164: }

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