457 lines
13 KiB
C
457 lines
13 KiB
C
/* $Xorg: fontinfo.c,v 1.4 2001/02/09 02:05:42 xorgcvs Exp $ */
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/*
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* font data query
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*/
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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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/* $XFree86: xc/programs/xfs/difs/fontinfo.c,v 1.10 2001/12/14 20:01:34 dawes Exp $ */
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#include <X11/fonts/FS.h>
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#include <X11/fonts/FSproto.h>
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#include <stdio.h>
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#include <X11/Xos.h>
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#include "clientstr.h"
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#include "difsfnst.h"
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#include <X11/fonts/fontstruct.h>
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#include "closestr.h"
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#include "globals.h"
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#include "difs.h"
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#include "dispatch.h"
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#include <swapreq.h>
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#include <swaprep.h>
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#include <limits.h>
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#ifndef SIZE_MAX
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# ifdef ULONG_MAX
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# define SIZE_MAX ULONG_MAX
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# else
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# define SIZE_MAX UINT_MAX
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# endif
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#endif
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void
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CopyCharInfo(
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CharInfoPtr ci,
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fsXCharInfo *dst)
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{
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xCharInfo *src = &ci->metrics;
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dst->ascent = src->ascent;
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dst->descent = src->descent;
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dst->left = src->leftSideBearing;
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dst->right = src->rightSideBearing;
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dst->width = src->characterWidth;
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dst->attributes = src->attributes;
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}
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int
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convert_props(
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FontInfoPtr pinfo,
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fsPropInfo **props)
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{
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int i;
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int data_len, cur_off;
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char *str;
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pointer ptr, off_ptr, string_base;
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fsPropOffset local_offset;
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/*
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* compute the size of the property data
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*/
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data_len = 0;
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for (i = 0; i < pinfo->nprops; i++)
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{
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data_len += strlen(NameForAtom(pinfo->props[i].name));
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if (NULL != pinfo->isStringProp && pinfo->isStringProp[i])
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data_len += strlen(NameForAtom(pinfo->props[i].value));
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}
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/*
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* allocate the single chunk that the difs layer requires
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*/
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ptr = (pointer) fsalloc(SIZEOF(fsPropInfo)
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+ SIZEOF(fsPropOffset) * pinfo->nprops
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+ data_len);
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if (!ptr)
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return AllocError;
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string_base = (char *)ptr + SIZEOF(fsPropInfo) + SIZEOF(fsPropOffset) * pinfo->nprops;
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/*
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* copy in the header
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*/
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((fsPropInfo *)ptr)->num_offsets = pinfo->nprops;
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((fsPropInfo *)ptr)->data_len = data_len;
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/*
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* compute the offsets and copy the string data
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*/
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off_ptr = (char *)ptr + SIZEOF(fsPropInfo);
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cur_off = 0;
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for (i = 0; i < pinfo->nprops; i++)
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{
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local_offset.name.position = cur_off;
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str = NameForAtom(pinfo->props[i].name);
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local_offset.name.length = strlen(str);
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memmove( (char *)string_base+cur_off, str, local_offset.name.length);
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cur_off += local_offset.name.length;
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if (NULL != pinfo->isStringProp && pinfo->isStringProp[i])
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{
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local_offset.value.position = cur_off;
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str = NameForAtom(pinfo->props[i].value);
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local_offset.value.length = strlen(str);
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memmove( (char *)string_base+cur_off, str, local_offset.value.length);
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cur_off += local_offset.value.length;
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local_offset.type = PropTypeString;
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} else {
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local_offset.value.position = pinfo->props[i].value;
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local_offset.value.length = 0; /* protocol says must be zero */
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local_offset.type = PropTypeSigned;
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}
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memmove( off_ptr, &local_offset, SIZEOF(fsPropOffset));
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off_ptr = (char *)off_ptr + SIZEOF(fsPropOffset);
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}
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assert(off_ptr == string_base);
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assert(cur_off == data_len);
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*props = (fsPropInfo *) ptr;
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return Successful;
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}
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/*
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* does the real work of turning a list of range (or chars) into
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* a list of ranges
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*/
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static fsRange *
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build_range(
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Bool type,
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pointer src,
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int item_size,
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int *num,
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Bool *all,
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FontInfoPtr pfi)
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{
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fsRange *new = (fsRange *) 0,
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*np;
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unsigned long src_num;
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unsigned long i;
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if (type) { /* range flag is set, deal with data as a list
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* of char2bs */
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char *rp = (char *) src;
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src_num = *num;
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if (src_num == 0) {
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*all = TRUE;
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return new;
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}
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if (src_num >= SIZE_MAX / sizeof(fsRange) * 2 - 1)
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return NULL;
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np = new = (fsRange *) fsalloc(sizeof(fsRange) * (src_num + 1) / 2);
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if (!np)
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return np;
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/* Build a new range */
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for (i = 1; i < src_num; i += 2)
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{
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np->min_char_high = (item_size == 1) ? 0 : *rp++;
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np->min_char_low = *rp++;
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np->max_char_high = (item_size == 1) ? 0 : *rp++;
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np->max_char_low = *rp++;
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np++;
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}
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/* If src_num is odd, we need to determine the final range
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by examining the fontinfo */
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if (i == src_num)
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{
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np->min_char_high = (item_size == 1) ? 0 : *rp++;
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np->min_char_low = *rp++;
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np->max_char_high = pfi->lastRow;
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np->max_char_low = pfi->lastCol;
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np++;
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}
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*num = np - new;
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return new;
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} else { /* deal with data as a list of characters */
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unsigned char *pp = src;
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src_num = *num;
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if (src_num >= SIZE_MAX / sizeof(fsRange))
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return NULL;
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np = new = (fsRange *) fsalloc(SIZEOF(fsRange) * src_num);
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if (!np)
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return np;
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/* Build a range, with coalescence, from the list of chars */
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for (i = 0; i < src_num; i++) {
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if (item_size == 1) {
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np->min_char_low = *pp;
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np->min_char_high = 0;
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} else {
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np->min_char_low = ((fsChar2b *) pp)->low;
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np->min_char_high = ((fsChar2b *) pp)->high;
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}
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np->max_char_high = np->min_char_high;
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np->max_char_low = np->min_char_low;
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/* Can we coalesce? */
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if (np > new &&
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np->max_char_high == np[-1].max_char_high &&
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np->max_char_low == np[-1].max_char_low + 1)
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np[-1].max_char_low++; /* Yes */
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else
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np++; /* No */
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pp += item_size;
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}
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*num = np - new;
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return new;
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}
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}
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/*
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* provide backward compatibility with version 1, which had
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* the bytes of char2b backwards
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*/
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static void
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swap_char2b (fsChar2b *values, int number)
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{
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fsChar2b temp;
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int i;
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for (i = 0; i < number; i++) {
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temp.low = ((fsChar2b_version1 *)values)->low;
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temp.high = ((fsChar2b_version1 *)values)->high;
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*values++ = temp;
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}
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}
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#define pPtr ((QEclosurePtr) data)
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static Bool
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do_query_extents(ClientPtr client, pointer data)
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{
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int err;
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unsigned long lendata,
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num_extents;
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fsXCharInfo *extents;
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fsQueryXExtents8Reply reply;
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err = GetExtents (pPtr->client, pPtr->pfont,
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pPtr->flags, pPtr->nranges, pPtr->range, &num_extents, &extents);
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if (err == Suspended) {
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if (!pPtr->slept) {
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pPtr->pfont->unload_glyphs = 0; /* Not a safe call for this font */
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pPtr->slept = TRUE;
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ClientSleep(client, do_query_extents, (pointer) pPtr);
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}
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return TRUE;
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}
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if (err != Successful) {
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SendErrToClient(pPtr->client, FontToFSError(err), (pointer) 0);
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goto finish;
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}
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reply.type = FS_Reply;
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reply.sequenceNumber = pPtr->client->sequence;
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reply.num_extents = num_extents;
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lendata = SIZEOF(fsXCharInfo) * num_extents;
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reply.length = (SIZEOF(fsQueryXExtents8Reply) + lendata) >> 2;
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if (client->swapped)
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SwapExtents(extents, num_extents);
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WriteReplyToClient(pPtr->client, SIZEOF(fsQueryXExtents8Reply), &reply);
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(void) WriteToClient(pPtr->client, lendata, (char *) extents);
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fsfree((char *) extents);
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finish:
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if (pPtr->slept)
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ClientWakeup(pPtr->client);
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if (pPtr->pfont->unload_glyphs) /* For rasterizers that want to save memory */
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(*pPtr->pfont->unload_glyphs)(pPtr->pfont);
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fsfree(pPtr->range);
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fsfree(pPtr);
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return TRUE;
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}
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int
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QueryExtents(
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ClientPtr client,
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ClientFontPtr cfp,
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int item_size,
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int nranges,
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Bool range_flag,
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pointer range_data)
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{
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QEclosurePtr c;
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fsRange *fixed_range;
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Bool all_glyphs = FALSE;
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if (item_size == 2 && client->major_version == 1)
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swap_char2b ((fsChar2b *)range_data, nranges);
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fixed_range = build_range(range_flag, range_data, item_size,
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&nranges, &all_glyphs, &cfp->font->info);
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if (!fixed_range && !all_glyphs) {
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SendErrToClient(client, FSBadRange, 0);
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return FSBadRange;
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}
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c = (QEclosurePtr) fsalloc(sizeof(QEclosureRec));
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if (!c)
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return FSBadAlloc;
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c->client = client;
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c->slept = FALSE;
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c->pfont = cfp->font;
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c->flags = (all_glyphs) ? LoadAll : 0;
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c->flags |= (item_size == 1) ? EightBitFont : SixteenBitFont;
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c->nranges = nranges;
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c->range = fixed_range;
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(void) do_query_extents(client, (pointer) c);
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return FSSuccess;
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}
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#undef pPtr
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#define pPtr ((QBclosurePtr) data)
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static Bool
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do_query_bitmaps(ClientPtr client, pointer data)
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{
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int err;
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unsigned long num_glyphs;
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int data_size;
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fsOffset32 *offsets;
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pointer glyph_data;
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fsQueryXBitmaps8Reply reply;
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int freedata;
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err = GetBitmaps (pPtr->client, pPtr->pfont, pPtr->format,
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pPtr->flags, pPtr->nranges, pPtr->range,
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&data_size, &num_glyphs, &offsets, &glyph_data, &freedata);
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if (err == Suspended) {
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if (!pPtr->slept) {
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pPtr->pfont->unload_glyphs = 0; /* Not a safe call for this font */
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pPtr->slept = TRUE;
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ClientSleep(client, do_query_bitmaps, (pointer) pPtr);
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}
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return TRUE;
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}
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if (err != Successful) {
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SendErrToClient(pPtr->client, FontToFSError(err), (pointer) 0);
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goto finish;
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}
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reply.type = FS_Reply;
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reply.sequenceNumber = pPtr->client->sequence;
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reply.replies_hint = 0;
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reply.num_chars = num_glyphs;
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reply.nbytes = data_size;
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reply.length = (SIZEOF(fsQueryXBitmaps8Reply) + data_size +
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(SIZEOF(fsOffset32) * num_glyphs) + 3) >> 2;
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WriteReplyToClient(pPtr->client, SIZEOF(fsQueryXBitmaps8Reply), &reply);
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if (client->swapped)
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SwapLongs((long *)offsets, num_glyphs * 2);
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(void) WriteToClient(pPtr->client, (num_glyphs * SIZEOF(fsOffset32)),
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(char *) offsets);
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(void) WriteToClient(pPtr->client, data_size, (char *) glyph_data);
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fsfree((char *) offsets);
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if (freedata)
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fsfree((char *) glyph_data);
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finish:
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if (pPtr->slept)
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ClientWakeup(pPtr->client);
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if (pPtr->pfont->unload_glyphs) /* For rasterizers that want to save memory */
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(*pPtr->pfont->unload_glyphs)(pPtr->pfont);
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fsfree(pPtr->range);
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fsfree(pPtr);
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return TRUE;
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}
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int
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QueryBitmaps(
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ClientPtr client,
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ClientFontPtr cfp,
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int item_size,
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fsBitmapFormat format,
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int nranges,
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Bool range_flag,
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pointer range_data)
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{
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QBclosurePtr c;
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fsRange *fixed_range;
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Bool all_glyphs = FALSE;
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if (item_size == 2 && client->major_version == 1)
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swap_char2b ((fsChar2b *)range_data, nranges);
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fixed_range = build_range(range_flag, range_data, item_size,
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&nranges, &all_glyphs, &cfp->font->info);
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if (!fixed_range && !all_glyphs) {
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SendErrToClient(client, FSBadRange, 0);
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return FSBadRange;
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}
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c = (QBclosurePtr) fsalloc(sizeof(QBclosureRec));
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if (!c)
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return FSBadAlloc;
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c->client = client;
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c->slept = FALSE;
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c->pfont = cfp->font;
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c->flags = (all_glyphs) ? LoadAll : 0;
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c->nranges = nranges;
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c->range = fixed_range;
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c->format = format;
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(void) do_query_bitmaps(client, (pointer) c);
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return FSSuccess;
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}
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