640 lines
17 KiB
C
640 lines
17 KiB
C
/* $Xorg: charinfo.c,v 1.4 2001/02/09 02:05:42 xorgcvs Exp $ */
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/*
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Copyright 1990, 1991, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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* Copyright 1990, 1991 Network Computing Devices;
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* Portions Copyright 1987 by Digital Equipment Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the names of Network Computing Devices, or Digital
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* not be used in advertising or publicity pertaining to distribution
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* of the software without specific, written prior permission.
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*
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* NETWORK COMPUTING DEVICES, AND DIGITAL DISCLAIM ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES,
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* OR DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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* THIS SOFTWARE.
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*/
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/*
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* Defines GetExtents() and GetBitmaps(), which are
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* called from routines in fontinfo.c.
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* This file was once on the other side of
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* the font library interface as util/fsfuncs.c.
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*/
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/* $XFree86: xc/programs/xfs/difs/charinfo.c,v 1.11 2001/10/28 03:34:34 tsi Exp $ */
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#include <X11/Xos.h>
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#include "misc.h"
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#include <X11/fonts/fontstruct.h>
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#include <X11/fonts/fontutil.h>
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#include "clientstr.h"
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#define FSMD_H
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#include <X11/fonts/FSproto.h>
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#include "difs.h"
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extern void TwoByteSwap(unsigned char *, int);
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extern void FourByteSwap(unsigned char *, int);
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#define GLWIDTHBYTESPADDED(bits,nbytes) \
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((nbytes) == 1 ? (((bits)+7)>>3) /* pad to 1 byte */ \
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:(nbytes) == 2 ? ((((bits)+15)>>3)&~1) /* pad to 2 bytes */ \
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:(nbytes) == 4 ? ((((bits)+31)>>3)&~3) /* pad to 4 bytes */ \
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:(nbytes) == 8 ? ((((bits)+63)>>3)&~7) /* pad to 8 bytes */ \
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: 0)
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#define GLYPH_SIZE(ch, nbytes) \
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GLWIDTHBYTESPADDED((ch)->metrics.rightSideBearing - \
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(ch)->metrics.leftSideBearing, (nbytes))
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#define n2dChars(pfi) (((pfi)->lastRow - (pfi)->firstRow + 1) * \
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((pfi)->lastCol - (pfi)->firstCol + 1))
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#if 0
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static CharInfoRec junkDefault;
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#endif
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typedef int (*MetricsFunc)(FontPtr, unsigned long, unsigned char *,
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FontEncoding, unsigned long *, CharInfoPtr *);
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static int
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getCharInfos (
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FontPtr pfont,
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int num_ranges,
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fsRange *range,
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Bool ink_metrics,
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int *nump, /* return */
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CharInfoPtr **retp) /* return */
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{
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CharInfoPtr *xchars, *xci;
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int nchars;
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FontInfoPtr pinfo = &pfont->info;
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unsigned int r, c;
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unsigned char ch[2];
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int firstCol = pinfo->firstCol;
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int firstRow = pinfo->firstRow;
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int lastRow = pinfo->lastRow;
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int lastCol = pinfo->lastCol;
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fsRange local_range, *rp;
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int i;
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FontEncoding encoding;
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int err;
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unsigned long glyphCount;
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unsigned short defaultCh;
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CharInfoPtr defaultPtr;
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MetricsFunc metrics_func;
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/*
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* compute nchars
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*/
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if (num_ranges == 0) {
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if (lastRow)
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nchars = n2dChars(pinfo);
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else
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nchars = lastCol - firstCol + 1;
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local_range.min_char_low = firstCol;
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local_range.min_char_high = firstRow;
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local_range.max_char_low = lastCol;
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local_range.max_char_high = lastRow;
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range = &local_range;
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num_ranges = 1;
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} else {
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nchars = 0;
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for (i = 0, rp = range; i < num_ranges; i++, rp++) {
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if (rp->min_char_high > rp->max_char_high ||
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rp->min_char_low > rp->max_char_low)
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return BadCharRange;
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nchars += (rp->max_char_high - rp->min_char_high + 1) *
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(rp->max_char_low - rp->min_char_low + 1);
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}
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}
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xchars = (CharInfoPtr *) fsalloc (sizeof (CharInfoPtr) * nchars);
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if (!xchars)
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return AllocError;
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bzero (xchars, sizeof (CharInfoPtr) * nchars);
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if (ink_metrics)
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metrics_func = (MetricsFunc)pfont->get_metrics;
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else
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metrics_func = pfont->get_glyphs;
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xci = xchars;
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encoding = Linear16Bit;
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if (lastRow)
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encoding = TwoD16Bit;
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defaultCh = pinfo->defaultCh;
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ch[0] = defaultCh >> 8;
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ch[1] = defaultCh & 0xff;
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/* get the default character */
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(*metrics_func) (pfont, 1, ch, encoding,
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&glyphCount, &defaultPtr);
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if (glyphCount != 1)
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defaultPtr = 0;
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/* for each range, get each character individually, undoing the
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default character substitution so we get zero metrics for
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non-existent characters. */
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for (i = 0, rp = range; i < num_ranges; i++, rp++) {
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for (r = rp->min_char_high; r <= rp->max_char_high; r++)
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{
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for (c = rp->min_char_low; c <= rp->max_char_low; c++) {
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ch[0] = r;
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ch[1] = c;
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err = (*metrics_func) (pfont, 1, ch, encoding,
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&glyphCount, xci);
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if (err != Successful)
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{
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fsfree (xchars);
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return err;
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}
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#if 0
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if (glyphCount != 1 ||
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(*xci == defaultPtr && defaultCh != ((r<<8)+c)))
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*xci = &junkDefault;
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#endif
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xci++;
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}
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}
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}
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*retp = xchars;
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*nump = nchars;
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return Successful;
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}
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int
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GetExtents(
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ClientPtr client,
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FontPtr pfont,
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Mask flags,
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unsigned long num_ranges,
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fsRange *range,
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unsigned long *num_extents, /* return */
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fsXCharInfo **data) /* return */
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{
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unsigned long size;
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fsXCharInfo *ci;
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fsXCharInfo cilocal;
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char *pci;
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CharInfoPtr *xchars, *xchars_cur;
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CharInfoPtr xci;
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int nchars;
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int err;
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if (flags & LoadAll)
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num_ranges = 0;
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err = getCharInfos (pfont, num_ranges, range,
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client->major_version > 1 ? TRUE : FALSE,
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&nchars, &xchars);
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if (err != Successful)
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return err;
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size = SIZEOF(fsXCharInfo) * nchars;
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pci = (char *) fsalloc(size);
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if (!pci) {
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fsfree (xchars);
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return AllocError;
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}
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ci = (fsXCharInfo *) pci;
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*num_extents = nchars;
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/* pack the data */
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xchars_cur = xchars;
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while (nchars--) {
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xci = *xchars_cur++;
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cilocal.ascent = xci->metrics.ascent;
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cilocal.descent = xci->metrics.descent;
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cilocal.left = xci->metrics.leftSideBearing;
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cilocal.right = xci->metrics.rightSideBearing;
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cilocal.width = xci->metrics.characterWidth;
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cilocal.attributes = xci->metrics.attributes;
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memcpy(pci, &cilocal, SIZEOF(fsXCharInfo));
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pci += SIZEOF(fsXCharInfo);
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}
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fsfree (xchars);
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*data = ci;
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return Successful;
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}
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static int
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packGlyphs (
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ClientPtr client,
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FontPtr pfont,
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int format,
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Mask flags,
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unsigned long num_ranges,
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fsRange *range,
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int *tsize,
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unsigned long *num_glyphs,
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fsOffset32 **offsets,
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pointer *data,
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int *freeData)
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{
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int i;
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fsOffset32 *lengths, *l;
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unsigned long size = 0;
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pointer gdata;
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unsigned char *gd;
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int bitorder, byteorder, scanlinepad, scanlineunit, mappad;
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int height = 0, dstbpr = 0, charsize = 0;
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int dst_off = 0, src_off;
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Bool contiguous, reformat;
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int nchars;
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int src_glyph_pad = pfont->glyph;
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int src_bit_order = pfont->bit;
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int src_byte_order = pfont->byte;
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int err;
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int max_ascent = 0, max_descent = 0;
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int min_left = 0, max_right;
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int srcbpr;
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int lshift = 0, rshift = 0, dst_left_bytes = 0, src_left_bytes = 0;
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unsigned char *srcp;
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unsigned char *dstp;
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unsigned char bits1, bits2;
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int width;
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int src_extra;
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int dst_extra;
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int r, w;
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CharInfoPtr *bitChars, *bitCharsFree, bitc;
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CharInfoPtr *inkChars, *inkCharsFree = 0, inkc;
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FontInfoPtr pinfo = &pfont->info;
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xCharInfo *bitm, *inkm;
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err = CheckFSFormat(format, (fsBitmapFormatMask) ~ 0,
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&bitorder, &byteorder, &scanlineunit, &scanlinepad, &mappad);
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if (err != Successful)
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return err;
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if (flags & LoadAll)
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num_ranges = 0;
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err = getCharInfos (pfont, num_ranges, range, FALSE, &nchars, &bitCharsFree);
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if (err != Successful)
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return err;
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/* compute dstbpr for padded out fonts */
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reformat = bitorder != src_bit_order || byteorder != src_byte_order;
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/* we need the ink metrics when shrink-wrapping a TE font (sigh),
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* but only for protocol version > 1 */
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if (mappad != BitmapFormatImageRectMax &&
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pinfo->inkMetrics &&
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client->major_version > 1)
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{
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err = getCharInfos (pfont, num_ranges, range, TRUE, &nchars, &inkCharsFree);
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if (err != Successful)
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{
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fsfree (bitCharsFree);
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return err;
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}
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reformat = TRUE;
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}
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/* get space for glyph offsets */
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lengths = (fsOffset32 *) fsalloc(SIZEOF(fsOffset32) * nchars);
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if (!lengths) {
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fsfree (bitCharsFree);
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fsfree (inkCharsFree);
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return AllocError;
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}
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switch (mappad)
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{
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case BitmapFormatImageRectMax:
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max_ascent = FONT_MAX_ASCENT(pinfo);
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max_descent = FONT_MAX_DESCENT(pinfo);
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height = max_ascent + max_descent;
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/* do font ascent and font descent match bitmap bounds ? */
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if (height != pinfo->minbounds.ascent + pinfo->minbounds.descent)
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reformat = TRUE;
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/* fall through */
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case BitmapFormatImageRectMaxWidth:
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min_left = FONT_MIN_LEFT(pinfo);
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max_right = FONT_MAX_RIGHT(pinfo);
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if (min_left != pinfo->maxbounds.leftSideBearing)
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reformat = TRUE;
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if (max_right != pinfo->maxbounds.rightSideBearing)
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reformat = TRUE;
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dstbpr = GLWIDTHBYTESPADDED(max_right - min_left, scanlinepad);
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break;
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case BitmapFormatImageRectMin:
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break;
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}
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if (mappad == BitmapFormatImageRectMax)
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charsize = dstbpr * height;
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size = 0;
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gdata = 0;
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contiguous = TRUE;
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l = lengths;
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inkChars = inkCharsFree;
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bitChars = bitCharsFree;
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for (i = 0; i < nchars; i++)
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{
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inkc = bitc = *bitChars++;
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/* when ink metrics != bitmap metrics, use ink metrics */
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if (inkChars)
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inkc = *inkChars++;
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l->position = size;
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/*
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* Do not repad characters with no bits except for those
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* with non-zero width.
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*/
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if (bitc && (bitc->bits || bitc->metrics.characterWidth)) {
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if (!gdata)
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gdata = (pointer) bitc->bits;
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if ((char *) gdata + size != bitc->bits)
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contiguous = FALSE;
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if (mappad == BitmapFormatImageRectMin)
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dstbpr = GLYPH_SIZE(inkc, scanlinepad);
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if (dstbpr != GLYPH_SIZE(bitc, src_glyph_pad)) reformat = TRUE;
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if (mappad != BitmapFormatImageRectMax)
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{
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height = inkc->metrics.ascent + inkc->metrics.descent;
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charsize = height * dstbpr;
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}
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l->length = charsize;
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size += charsize;
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}
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else
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l->length = 0;
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l++;
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}
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if (contiguous && !reformat)
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{
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*num_glyphs = nchars;
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*freeData = FALSE;
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*data = gdata;
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*tsize = size;
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*offsets = lengths;
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fsfree (bitCharsFree);
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fsfree (inkCharsFree);
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return Successful;
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}
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if (size)
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{
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gdata = (pointer) fsalloc(size);
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if (!gdata) {
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fsfree (bitCharsFree);
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fsfree (inkCharsFree);
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fsfree (lengths);
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return AllocError;
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}
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bzero ((char *) gdata, size);
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}
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else
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gdata = NULL;
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*freeData = TRUE;
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l = lengths;
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gd = gdata;
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/* finally do the work */
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bitChars = bitCharsFree;
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inkChars = inkCharsFree;
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for (i = 0; i < nchars; i++, l++)
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{
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inkc = bitc = *bitChars++;
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if (inkChars)
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inkc = *inkChars++;
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/* ignore missing chars */
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if (l->length == 0)
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continue;
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bitm = &bitc->metrics;
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inkm = &inkc->metrics;
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/* start address for the destination of bits for this char */
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dstp = gd;
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if (mappad == BitmapFormatImageRectMax)
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height = max_ascent + max_descent;
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else
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height = inkm->ascent + inkm->descent;
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/* adjust destination and calculate shift offsets */
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switch (mappad) {
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case BitmapFormatImageRectMax:
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/* leave the first padded rows blank */
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if (max_ascent > inkm->ascent)
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{
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height -= (max_ascent - inkm->ascent);
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dstp += dstbpr * (max_ascent - inkm->ascent);
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}
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if (max_descent > inkm->descent)
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{
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height -= (max_descent - inkm->descent);
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}
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/* fall thru */
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case BitmapFormatImageRectMaxWidth:
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dst_off = inkm->leftSideBearing - min_left;
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if (dst_off < 0) dst_off = 0;
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break;
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case BitmapFormatImageRectMin:
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dst_off = 0;
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dstbpr = GLYPH_SIZE(inkc, scanlinepad);
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break;
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}
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srcbpr = GLYPH_SIZE (bitc, src_glyph_pad);
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srcp = (unsigned char *) bitc->bits;
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/* adjust source */
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src_off = 0;
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if (inkm != bitm)
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{
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srcp += (bitm->ascent - inkm->ascent) * srcbpr;
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src_off = inkm->leftSideBearing - bitm->leftSideBearing;
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}
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dst_left_bytes = dst_off >> 3;
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dst_off &= 7;
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src_left_bytes = src_off >> 3;
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src_off &= 7;
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/* minimum of source/dest bytes per row */
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width = srcbpr - src_left_bytes;
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if (width > dstbpr - dst_left_bytes)
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width = dstbpr - dst_left_bytes;
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/* extra bytes in source and dest for padding */
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src_extra = srcbpr - width - src_left_bytes;
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dst_extra = dstbpr - width - dst_left_bytes;
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#define MSBBitLeft(b,c) ((b) << (c))
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#define MSBBitRight(b,c) ((b) >> (c))
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#define LSBBitLeft(b,c) ((b) >> (c))
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#define LSBBitRight(b,c) ((b) << (c))
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if (dst_off == src_off)
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{
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if (srcbpr == dstbpr && src_left_bytes == dst_left_bytes)
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{
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r = height * srcbpr;
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memmove( dstp, srcp, r);
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dstp += r;
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}
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else
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{
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for (r = height; r; r--)
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{
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dstp += dst_left_bytes;
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srcp += src_left_bytes;
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for (w = width; w; w--)
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*dstp++ = *srcp++;
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dstp += dst_extra;
|
|
srcp += src_extra;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (dst_off > src_off)
|
|
{
|
|
rshift = dst_off - src_off;
|
|
lshift = 8 - rshift;
|
|
}
|
|
else
|
|
{
|
|
lshift = src_off - dst_off;
|
|
rshift = 8 - lshift;
|
|
/* run the loop one fewer time if necessary */
|
|
if (src_extra <= dst_extra)
|
|
{
|
|
dst_extra++;
|
|
width--;
|
|
}
|
|
else
|
|
src_extra--;
|
|
}
|
|
|
|
for (r = inkm->ascent + inkm->descent; r; r--)
|
|
{
|
|
dstp += dst_left_bytes;
|
|
srcp += src_left_bytes;
|
|
bits2 = 0;
|
|
/* fetch first part of source when necessary */
|
|
if (dst_off < src_off)
|
|
bits2 = *srcp++;
|
|
/*
|
|
* XXX I bet this does not work when
|
|
* src_bit_order != src_byte_order && scanlineunit > 1
|
|
*/
|
|
for (w = width; w; w--)
|
|
{
|
|
bits1 = *srcp++;
|
|
if (src_bit_order == MSBFirst)
|
|
{
|
|
*dstp++ = MSBBitRight(bits1, rshift) |
|
|
MSBBitLeft (bits2, lshift);
|
|
}
|
|
else
|
|
{
|
|
*dstp++ = LSBBitRight(bits1, rshift) |
|
|
LSBBitLeft (bits2, lshift);
|
|
}
|
|
bits2 = bits1;
|
|
}
|
|
/* get the last few bits if we have a place to store them */
|
|
if (dst_extra > 0)
|
|
{
|
|
if (src_bit_order == MSBFirst)
|
|
*dstp = MSBBitLeft (bits2, lshift);
|
|
else
|
|
*dstp = LSBBitLeft (bits2, lshift);
|
|
}
|
|
dstp += dst_extra;
|
|
srcp += src_extra;
|
|
}
|
|
}
|
|
/* skip the amount we just filled in */
|
|
gd += l->length;
|
|
}
|
|
|
|
|
|
/* now do the bit, byte, word swapping */
|
|
if (bitorder != src_bit_order)
|
|
BitOrderInvert(gdata, size);
|
|
if (byteorder != src_byte_order)
|
|
{
|
|
if (scanlineunit == 2)
|
|
TwoByteSwap(gdata, size);
|
|
else if (scanlineunit == 4)
|
|
FourByteSwap(gdata, size);
|
|
}
|
|
fsfree (bitCharsFree);
|
|
fsfree (inkCharsFree);
|
|
*num_glyphs = nchars;
|
|
*data = gdata;
|
|
*tsize = size;
|
|
*offsets = lengths;
|
|
|
|
return Successful;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
GetBitmaps(
|
|
ClientPtr client,
|
|
FontPtr pfont,
|
|
fsBitmapFormat format,
|
|
Mask flags,
|
|
unsigned long num_ranges,
|
|
fsRange *range,
|
|
int *size,
|
|
unsigned long *num_glyphs,
|
|
fsOffset32 **offsets,
|
|
pointer *data,
|
|
int *freeData)
|
|
{
|
|
int err;
|
|
|
|
assert(pfont);
|
|
|
|
*size = 0;
|
|
*data = (pointer) 0;
|
|
|
|
err = LoadGlyphRanges(client, pfont, TRUE, num_ranges * 2, 0,
|
|
(fsChar2b *)range);
|
|
|
|
if (err != Successful)
|
|
return err;
|
|
|
|
return packGlyphs (client, pfont, format, flags,
|
|
num_ranges, range, size, num_glyphs,
|
|
offsets, data, freeData);
|
|
}
|