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Annotation of researchv9/X11/src/X.V11R1/server/ddx/mfb/mfbfont.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: mfbfont.c,v 1.14 87/09/03 13:50:48 toddb Exp $ */
        !            25: #include "X.h"
        !            26: #include "Xmd.h"
        !            27: #include "Xproto.h"
        !            28: #include "fontstruct.h"
        !            29: #include "dixfontstr.h"
        !            30: #include "scrnintstr.h"
        !            31: 
        !            32: #include "mfb.h"
        !            33: 
        !            34: /*
        !            35:  * Take advantage of the per-screen private information field in the font to
        !            36:  * encode the results of fairly complex tests of the font's metric fields.
        !            37:  * ValidateFont need merely examine the code to select the output routines to
        !            38:  * be pointed to in the GC.
        !            39:  */
        !            40: Bool
        !            41: mfbRealizeFont( pscr, pFont)
        !            42:     ScreenPtr  pscr;
        !            43:     FontPtr    pFont;
        !            44: {
        !            45:     /*
        !            46:      * pGC->font is now known to be valid
        !            47:      */
        !            48:     int                        index = pscr->myNum;
        !            49:     FontInfoPtr                pfi = pFont->pFI;
        !            50:     CharInfoPtr                maxb = &pfi->maxbounds;
        !            51:     CharInfoPtr                minb = &pfi->minbounds;
        !            52: 
        !            53:     /*
        !            54:      * pick the fastest output routines that can do the job.
        !            55:      */
        !            56:     if (   maxb->metrics.rightSideBearing -
        !            57:                minb->metrics.leftSideBearing > 32      /* big glyphs */
        !            58:          || pfi->drawDirection != FontLeftToRight
        !            59:          || pfi->noOverlap == 0)
        !            60:        pFont->devPriv[ index] = (pointer)FT_VARPITCH;
        !            61:     else  /* an optimizable case */
        !            62:     {
        !            63:        if (     maxb->metrics.leftSideBearing ==
        !            64:                    minb->metrics.leftSideBearing /* fixed pitch */
        !            65:              && maxb->metrics.leftSideBearing == 0       /* fixed pitch */
        !            66:              && maxb->metrics.rightSideBearing ==
        !            67:                    minb->metrics.rightSideBearing /* fixed pitch */
        !            68:              && maxb->metrics.characterWidth ==
        !            69:                    minb->metrics.characterWidth  /* fixed pitch */
        !            70:              && maxb->metrics.ascent ==
        !            71:                    minb->metrics.ascent          /* fixed height */
        !            72:              && maxb->metrics.descent ==
        !            73:                    minb->metrics.descent)  /* fixed height */
        !            74:            pFont->devPriv[ index] = (pointer)FT_FIXPITCH;
        !            75:        else
        !            76:            pFont->devPriv[ index] = (pointer)FT_SMALLPITCH;
        !            77:     }
        !            78:     return (TRUE);
        !            79: }
        !            80: 
        !            81: /*
        !            82:  * no storage allocated in mfbRealizeFont, so there is nothing to do
        !            83:  */
        !            84: Bool
        !            85: mfbUnrealizeFont( pscr, pFont)
        !            86:     ScreenPtr  pscr;
        !            87:     FontPtr    pFont;
        !            88: {
        !            89:     return (TRUE);
        !            90: }

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