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- /* $XConsortium: XFontInfo.c,v 11.21 91/01/29 08:40:25 rws Exp $ */
- /* Copyright Massachusetts Institute of Technology 1986 */
-
- /*
- Permission to use, copy, modify, distribute, and sell this software and its
- documentation for any purpose is hereby granted without fee, 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 M.I.T. not be used in advertising or
- publicity pertaining to distribution of the software without specific,
- written prior permission. M.I.T. makes no representations about the
- suitability of this software for any purpose. It is provided "as is"
- without express or implied warranty.
- */
-
- #define NEED_REPLIES
- #include "Xlibint.h"
-
- #if NeedFunctionPrototypes
- char **XListFontsWithInfo(
- register Display *dpy,
- _Xconst char *pattern, /* null-terminated */
- int maxNames,
- int *actualCount, /* RETURN */
- XFontStruct **info) /* RETURN */
- #else
- char **XListFontsWithInfo(dpy, pattern, maxNames, actualCount, info)
- register Display *dpy;
- char *pattern; /* null-terminated */
- int maxNames;
- int *actualCount; /* RETURN */
- XFontStruct **info; /* RETURN */
- #endif
- {
- register long nbytes;
- register int i;
- register XFontStruct *fs;
- register int size = 0;
- XFontStruct *finfo = NULL;
- char **flist = NULL;
- xListFontsWithInfoReply reply;
- register xListFontsReq *req;
- int j;
-
- LockDisplay(dpy);
- GetReq(ListFontsWithInfo, req);
- req->maxNames = maxNames;
- nbytes = req->nbytes = pattern ? strlen (pattern) : 0;
- req->length += (nbytes + 3) >> 2;
- _XSend (dpy, pattern, nbytes);
- /* use _XSend instead of Data, since subsequent _XReply will flush buffer */
-
- for (i = 0; ; i++) {
- if (!_XReply (dpy, (xReply *) &reply,
- ((SIZEOF(xListFontsWithInfoReply) -
- SIZEOF(xGenericReply)) >> 2), xFalse)) {
- for (j=(i-1); (j >= 0); j--) {
- Xfree(flist[j]);
- if (finfo[j].properties) Xfree((char *) finfo[j].properties);
- }
- if (flist) Xfree((char *) flist);
- if (finfo) Xfree((char *) finfo);
- UnlockDisplay(dpy);
- SyncHandle();
- return ((char **) NULL);
- }
- if (reply.nameLength == 0)
- break;
- if ((i + reply.nReplies) >= size) {
- size = i + reply.nReplies + 1;
-
- if (finfo) {
- XFontStruct * tmp_finfo = (XFontStruct *)
- Xrealloc ((char *) finfo,
- (unsigned) (sizeof(XFontStruct) * size));
- char ** tmp_flist = (char **)
- Xrealloc ((char *) flist,
- (unsigned) (sizeof(char *) * (size+1)));
-
- if ((! tmp_finfo) || (! tmp_flist)) {
- /* free all the memory that we allocated */
- for (j=(i-1); (j >= 0); j--) {
- Xfree(flist[j]);
- if (finfo[j].properties)
- Xfree((char *) finfo[j].properties);
- }
- if (tmp_flist) Xfree((char *) tmp_flist);
- else Xfree((char *) flist);
- if (tmp_finfo) Xfree((char *) tmp_finfo);
- else Xfree((char *) finfo);
- goto clearwire;
- }
- finfo = tmp_finfo;
- flist = tmp_flist;
- }
- else {
- if (! (finfo = (XFontStruct *)
- Xmalloc((unsigned) (sizeof(XFontStruct) * size))))
- goto clearwire;
- if (! (flist = (char **)
- Xmalloc((unsigned) (sizeof(char *) * (size+1))))) {
- Xfree((char *) finfo);
- goto clearwire;
- }
- }
- }
- fs = &finfo[i];
-
- fs->ext_data = NULL;
- fs->per_char = NULL;
- fs->fid = None;
- fs->direction = reply.drawDirection;
- fs->min_char_or_byte2 = reply.minCharOrByte2;
- fs->max_char_or_byte2 = reply.maxCharOrByte2;
- fs->min_byte1 = reply.minByte1;
- fs->max_byte1 = reply.maxByte1;
- fs->default_char = reply.defaultChar;
- fs->all_chars_exist = reply.allCharsExist;
- fs->ascent = cvtINT16toInt (reply.fontAscent);
- fs->descent = cvtINT16toInt (reply.fontDescent);
-
- #ifdef MUSTCOPY
- {
- xCharInfo *xcip;
-
- xcip = (xCharInfo *) &reply.minBounds;
- fs->min_bounds.lbearing = xcip->leftSideBearing;
- fs->min_bounds.rbearing = xcip->rightSideBearing;
- fs->min_bounds.width = xcip->characterWidth;
- fs->min_bounds.ascent = xcip->ascent;
- fs->min_bounds.descent = xcip->descent;
- fs->min_bounds.attributes = xcip->attributes;
-
- xcip = (xCharInfo *) &reply.maxBounds;
- fs->max_bounds.lbearing = xcip->leftSideBearing;
- fs->max_bounds.rbearing = xcip->rightSideBearing;
- fs->max_bounds.width = xcip->characterWidth;
- fs->max_bounds.ascent = xcip->ascent;
- fs->max_bounds.descent = xcip->descent;
- fs->max_bounds.attributes = xcip->attributes;
- }
- #else
- /* XXX the next two statements won't work if short isn't 16 bits */
- fs->min_bounds = * (XCharStruct *) &reply.minBounds;
- fs->max_bounds = * (XCharStruct *) &reply.maxBounds;
- #endif /* MUSTCOPY */
-
- fs->n_properties = reply.nFontProps;
- if (fs->n_properties > 0) {
- nbytes = reply.nFontProps * sizeof(XFontProp);
- if (! (fs->properties = (XFontProp *) Xmalloc((unsigned) nbytes)))
- goto badmem;
- nbytes = reply.nFontProps * SIZEOF(xFontProp);
- _XRead32 (dpy, (char *)fs->properties, nbytes);
-
- } else
- fs->properties = NULL;
-
- j = reply.nameLength + 1;
- if (!i)
- j++; /* make first string 1 byte longer, to match XListFonts */
- flist[i] = (char *) Xmalloc ((unsigned int) j);
- if (! flist[i]) {
- if (finfo[i].properties) Xfree((char *) finfo[i].properties);
- nbytes = reply.nameLength + 3 & ~3;
- _XEatData(dpy, (unsigned long) nbytes);
- goto badmem;
- }
- if (!i) {
- *flist[0] = 0; /* zero to distinguish from XListFonts */
- flist[0]++;
- }
- flist[i][reply.nameLength] = '\0';
- _XReadPad (dpy, flist[i], (long) reply.nameLength);
- }
- *info = finfo;
- *actualCount = i;
- if (flist)
- flist[i] = NULL; /* required in case XFreeFontNames is called */
- UnlockDisplay(dpy);
- SyncHandle();
- return (flist);
-
-
- badmem:
- /* Free all memory allocated by this function. */
- for (j=(i-1); (j >= 0); j--) {
- Xfree(flist[j]);
- if (finfo[j].properties) Xfree((char *) finfo[j].properties);
- }
- if (flist) Xfree((char *) flist);
- if (finfo) Xfree((char *) finfo);
-
- clearwire:
- /* Clear the wire. */
- do {
- if (reply.nFontProps)
- _XEatData(dpy, (unsigned long)
- (reply.nFontProps * SIZEOF(xFontProp)));
- nbytes = (reply.nameLength + 3) & ~3;
- _XEatData(dpy, (unsigned long) nbytes);
- }
- while (_XReply(dpy,(xReply *) &reply, ((SIZEOF(xListFontsWithInfoReply) -
- SIZEOF(xGenericReply)) >> 2),
- xFalse) && (reply.nameLength != 0));
-
- UnlockDisplay(dpy);
- SyncHandle();
- return (char **) NULL;
- }
-
-
- XFreeFontInfo (names, info, actualCount)
- char **names;
- XFontStruct *info;
- int actualCount;
- {
- register int i;
- if (names) {
- Xfree (names[0]-1);
- for (i = 1; i < actualCount; i++) {
- Xfree (names[i]);
- }
- Xfree((char *) names);
- }
- if (info) {
- for (i = 0; i < actualCount; i++) {
- if (info[i].per_char)
- Xfree ((char *) info[i].per_char);
- if (info[i].properties)
- Xfree ((char *) info[i].properties);
- }
- Xfree((char *) info);
- }
- }
-