dixfonts.c

远程桌面连接工具

    if (!fplist) {
	*bad = 0;
	return BadAlloc;
    }
    for (i = 0; i < num_fpe_types; i++) {
	if (fpe_functions[i].set_path_hook)
	    (*fpe_functions[i].set_path_hook) ();
    }
    for (i = 0; i < npaths; i++) {
	len = (unsigned int) (*cp++);

	if (len) {
	    /* if it's already in our active list, just reset it */
	    /*
	     * note that this can miss FPE's in limbo -- may be worth catching
	     * them, though it'd muck up refcounting
	     */
	    fpe = find_existing_fpe(font_path_elements, num_fpes, cp, len);
	    if (fpe) {
		err = (*fpe_functions[fpe->type].reset_fpe) (fpe);
		if (err == Successful) {
		    UseFPE(fpe);/* since it'll be decref'd later when freed
				 * from the old list */
		    fplist[valid_paths++] = fpe;
		    cp += len;
		    continue;
		}
		/* if error or can't do it, act like it's a new one */
	    }
	    fpe = (FontPathElementPtr) xalloc(sizeof(FontPathElementRec));
	    if (!fpe) {
		err = BadAlloc;
		goto bail;
	    }
	    fpe->name = (char *) xalloc(len + 1);
	    if (!fpe->name) {
		xfree(fpe);
		err = BadAlloc;
		goto bail;
	    }
	    fpe->refcount = 1;

	    strncpy(fpe->name, (char *) cp, (int) len);
	    cp += len;
	    fpe->name[len] = '\0';
	    fpe->name_length = len;
	    fpe->type = DetermineFPEType(fpe->name);
	    if (fpe->type == -1) {
		xfree(fpe->name);
		xfree(fpe);
		err = BadValue;
		goto bail;
	    }
	    err = (*fpe_functions[fpe->type].init_fpe) (fpe);
	    if (err != Successful) {
		xfree(fpe->name);
		xfree(fpe);
		err = BadValue;
		goto bail;
	    }
	    fplist[valid_paths++] = fpe;
	} else {
	    err = BadValue;
	    goto bail;
	}
    }

    FreeFontPath(font_path_elements, num_fpes, FALSE);
    font_path_elements = fplist;
    if (patternCache)
	EmptyFontPatternCache(patternCache);
    num_fpes = valid_paths;

    return Success;
bail:
    *bad = i;
    while (--i >= 0)
	FreeFPE(fplist[i]);
    xfree(fplist);
    return err;
}

/* XXX -- do we need to pass error down to each renderer? */
int
SetFontPath(client, npaths, paths, error)
    ClientPtr   client;
    int         npaths;
    unsigned char *paths;
    int        *error;
{
    int   err = Success;

    if (npaths == 0) {
	if (SetDefaultFontPath(defaultFontPath) != Success)
	    return BadName;
    } else {
	err = SetFontPathElements(npaths, paths, error);
    }
    return err;
}

/*** TJR - dirty hack - this variable is used in lib/font/fontfile/dirfile.c */
int settingDefaultFontPath = 0;

int
SetDefaultFontPath(path)
    char       *path;
{
    unsigned char *cp,
               *pp,
               *nump,
               *newpath;
    int         num = 1,
                len,
                err,
                size = 0,
                bad;

    /* get enough for string, plus values -- use up commas */
    len = strlen(path) + 1;
    nump = cp = newpath = (unsigned char *) ALLOCATE_LOCAL(len);
    if (!newpath)
	return BadAlloc;
    pp = (unsigned char *) path;
    cp++;
    while (*pp) {
	if (*pp == ',') {
	    *nump = (unsigned char) size;
	    nump = cp++;
	    pp++;
	    num++;
	    size = 0;
	} else {
	    *cp++ = *pp++;
	    size++;
	}
    }
    *nump = (unsigned char) size;

    settingDefaultFontPath = 1;

    err = SetFontPathElements(num, newpath, &bad);

    settingDefaultFontPath = 0;

    DEALLOCATE_LOCAL(newpath);

    return err;
}

unsigned char *
GetFontPath(count, length)
    int			*count;
    int			*length;
{
    int			i;
    unsigned char       *c;
    int			len;
    FontPathElementPtr	fpe;

    len = 0;
    for (i = 0; i < num_fpes; i++) {
	fpe = font_path_elements[i];
	len += fpe->name_length + 1;
    }
    font_path_string = (unsigned char *) xrealloc(font_path_string, len);
    if (!font_path_string)
	return NULL;

    c = font_path_string;
    *length = 0;
    for (i = 0; i < num_fpes; i++) {
	fpe = font_path_elements[i];
	*c = fpe->name_length;
	*length += *c++;
	memmove(c, fpe->name, fpe->name_length);
	c += fpe->name_length;
    }
    *count = num_fpes;
    return font_path_string;
}

int
LoadGlyphs(client, pfont, nchars, item_size, data)
    ClientPtr   client;
    FontPtr     pfont;
    unsigned    nchars;
    int         item_size;
    unsigned char *data;
{
    if (fpe_functions[pfont->fpe->type].load_glyphs)
	return (*fpe_functions[pfont->fpe->type].load_glyphs)
	    (client, pfont, 0, nchars, item_size, data);
    else
	return Successful;
}

void
DeleteClientFontStuff(client)
    ClientPtr	client;
{
    int			i;
    FontPathElementPtr	fpe;

    for (i = 0; i < num_fpes; i++)
    {
	fpe = font_path_elements[i];
	if (fpe_functions[fpe->type].client_died)
	    (*fpe_functions[fpe->type].client_died) ((pointer) client, fpe);
    }
}

void
InitFonts ()
{
    patternCache = MakeFontPatternCache();

    if (screenInfo.numScreens > screenInfo.numVideoScreens) {
	PrinterFontRegisterFpeFunctions();
	FontFileCheckRegisterFpeFunctions();
	check_fs_register_fpe_functions();
    } else {
	FontFileRegisterFpeFunctions();
	fs_register_fpe_functions();
    }
}

int
GetDefaultPointSize ()
{
    return 120;
}


FontResolutionPtr
GetClientResolutions (num)
    int        *num;
{
    if (requestingClient && requestingClient->fontResFunc != NULL &&
	!requestingClient->clientGone)
    {
	return (*requestingClient->fontResFunc)(requestingClient, num);
    }
    else {
	static struct _FontResolution res;
	ScreenPtr   pScreen;

	pScreen = screenInfo.screens[0];
	res.x_resolution = (pScreen->width * 25.4) / pScreen->mmWidth;
	/*
	 * XXX - we'll want this as long as bitmap instances are prevalent 
	 so that we can match them from scalable fonts
	 */
	if (res.x_resolution < 88)
	    res.x_resolution = 75;
	else
	    res.x_resolution = 100;
	res.y_resolution = (pScreen->height * 25.4) / pScreen->mmHeight;
	if (res.y_resolution < 88)
	    res.y_resolution = 75;
	else
	    res.y_resolution = 100;
	res.point_size = 120;
	*num = 1;
	return &res;
    }
}

/*
 * returns the type index of the new fpe
 *
 * should be called (only once!) by each type of fpe when initialized
 */

int
#if NeedFunctionPrototypes
RegisterFPEFunctions(
    int         (*name_func) (
                  char* /* name */
                  ),
    int         (*init_func) (
                  FontPathElementPtr /* fpe */
                  ),
    int         (*free_func) (
                  FontPathElementPtr /* fpe */
                  ),
    int         (*reset_func) (
                  FontPathElementPtr /* fpe */
                  ),
    int         (*open_func) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */,
                  int /* flags */,
                  char* /* name */,
                  int /* namelen */,
                  fsBitmapFormat /* format */,
                  fsBitmapFormatMask /* fmask */,
                  unsigned long /* id (type XID or FSID) */,
                  FontPtr* /* pFont */,
                  char** /* aliasName */,
                  FontPtr /* non_cachable_font */
                  ),
    int         (*close_func) (
                  FontPathElementPtr /* fpe */,
                  FontPtr /* pFont */
                  ),
    int         (*list_func) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */,
                  char* /* pat */,
                  int /* len */,
                  int /* max */,
                  FontNamesPtr /* names */
                  ),
    int         (*start_lfwi_func) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */,
                  char* /* pat */,
                  int /* patlen */,
                  int /* maxnames */,
                  pointer* /* privatep */
                  ),
    int         (*next_lfwi_func) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */,
                  char** /* name */,
                  int* /* namelen */,
                  FontInfoPtr* /* info */,
                  int* /* numFonts */,
                  pointer /* private */
                  ),
    int         (*wakeup_func) (
                  FontPathElementPtr /* fpe */,
                  unsigned long* /* LastSelectMask */
                  ),
    int         (*client_died) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */
                  ),
    int         (*load_glyphs) (
                  pointer /* client */,
                  FontPtr /* pfont */,
                  Bool /* range_flag */,
                  unsigned int /* nchars */,
                  int /* item_size */,
                  unsigned char* /* data */
                  ),
    int         (*start_list_alias_func) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */,
                  char* /* pat */,
                  int /* len */,
                  int /* max */,
                  pointer* /* privatep */
                  ),
    int         (*next_list_alias_func) (
                  pointer /* client */,
                  FontPathElementPtr /* fpe */,
                  char** /* namep */,
                  int* /* namelenp */,
                  char** /* resolvedp */,
                  int* /* resolvedlenp */,
                  pointer /* private */
                  ),
    void        (*set_path_func) (
                  void
                  )
)
#else
RegisterFPEFunctions(name_func, init_func, free_func, reset_func,
	   open_func, close_func, list_func, start_lfwi_func, next_lfwi_func,
		     wakeup_func, client_died, load_glyphs,
		     start_list_alias_func, next_list_alias_func,
		     set_path_func)
    Bool        (*name_func) ();
    int         (*init_func) ();
    int         (*free_func) ();
    int         (*reset_func) ();
    int         (*open_func) ();
    int         (*close_func) ();
    int         (*list_func) ();
    int         (*start_lfwi_func) ();
    int         (*next_lfwi_func) ();
    int         (*wakeup_func) ();
    int		(*client_died) ();
    int		(*load_glyphs) ();
    int		(*start_list_alias_func) ();
    int		(*next_list_alias_func) ();
    void	(*set_path_func) ();
#endif
{
    FPEFunctions *new;

    /* grow the list */
    new = (FPEFunctions *) xrealloc(fpe_functions,
				 (num_fpe_types + 1) * sizeof(FPEFunctions));
    if (!new)
	return -1;
    fpe_functions = new;

    fpe_functions[num_fpe_types].name_check = name_func;
    fpe_functions[num_fpe_types].open_font = open_func;
    fpe_functions[num_fpe_types].close_font = close_func;
    fpe_functions[num_fpe_types].wakeup_fpe = wakeup_func;
    fpe_functions[num_fpe_types].list_fonts = list_func;
    fpe_functions[num_fpe_types].start_list_fonts_with_info =
	start_lfwi_func;
    fpe_functions[num_fpe_types].list_next_font_with_info =
	next_lfwi_func;
    fpe_functions[num_fpe_types].init_fpe = init_func;
    fpe_functions[num_fpe_types].free_fpe = free_func;
    fpe_functions[num_fpe_types].reset_fpe = reset_func;
    fpe_functions[num_fpe_types].client_died = client_died;
    fpe_functions[num_fpe_types].load_glyphs = load_glyphs;
    fpe_functions[num_fpe_types].start_list_fonts_and_aliases =
	start_list_alias_func;
    fpe_functions[num_fpe_types].list_next_font_or_alias =
	next_list_alias_func;
    fpe_functions[num_fpe_types].set_path_hook = set_path_func;

    return num_fpe_types++;
}

void
FreeFonts()
{
    if (patternCache) {
	FreeFontPatternCache(patternCache);
	patternCache = 0;
    }
    FreeFontPath(font_path_elements, num_fpes, TRUE);
    font_path_elements = 0;
    num_fpes = 0;
    xfree(fpe_functions);
    num_fpe_types = 0;
    fpe_functions = (FPEFunctions *) 0;
}

/* convenience functions for FS interface */

FontPtr
find_old_font(id)
    XID         id;
{
    return (FontPtr) SecurityLookupIDByType(NullClient, id, RT_NONE,
					    SecurityUnknownAccess);
}

Font
GetNewFontClientID()
{
    return FakeClientID(0);
}

int
StoreFontClientFont(pfont, id)
    FontPtr     pfont;
    Font        id;
{
    return AddResource(id, RT_NONE, (pointer) pfont);
}

void
DeleteFontClientID(id)
    Font        id;
{
    FreeResource(id, RT_NONE);
}

int
client_auth_generation(client)
    ClientPtr client;
{
    return 0;
}

static int  fs_handlers_installed = 0;
static unsigned int last_server_gen;

int
init_fs_handlers(fpe, block_handler)
    FontPathElementPtr fpe;
    BlockHandlerProcPtr block_handler;
{
    /* if server has reset, make sure the b&w handlers are reinstalled */
    if (last_server_gen < serverGeneration) {
	last_server_gen = serverGeneration;
	fs_handlers_installed = 0;
    }
    if (fs_handlers_installed == 0) {

#ifdef DEBUG
	fprintf(stderr, "adding FS b & w handlers\n");
#endif

	if (!RegisterBlockAndWakeupHandlers(block_handler,
					    FontWakeup, (pointer) 0))
	    return AllocError;
	fs_handlers_installed++;
    }
    QueueFontWakeup(fpe);
    return Successful;
}

void
remove_fs_handlers(fpe, block_handler, all)
    FontPathElementPtr fpe;
    BlockHandlerProcPtr block_handler;
    Bool        all;
{
    if (all) {
	/* remove the handlers if no one else is using them */
	if (--fs_handlers_installed == 0) {

#ifdef DEBUG
	    fprintf(stderr, "removing FS b & w handlers\n");
#endif

	    RemoveBlockAndWakeupHandlers(block_handler, FontWakeup,
					 (pointer) 0);
	}
    }
    RemoveFontWakeup(fpe);
}

#ifdef DEBUG
#define GLWIDTHBYTESPADDED(bits,nbytes) \
	((nbytes) == 1 ? (((bits)+7)>>3)        /* pad to 1 byte */ \
	:(nbytes) == 2 ? ((((bits)+15)>>3)&~1)  /* pad to 2 bytes */ \
	:(nbytes) == 4 ? ((((bits)+31)>>3)&~3)  /* pad to 4 bytes */ \
	:(nbytes) == 8 ? ((((bits)+63)>>3)&~7)  /* pad to 8 bytes */ \
	: 0)

#define GLYPH_SIZE(ch, nbytes)          \
	GLWIDTHBYTESPADDED((ch)->metrics.rightSideBearing - \
			(ch)->metrics.leftSideBearing, (nbytes))
dump_char_ascii(cip)
    CharInfoPtr cip;
{
    int         r,
                l;
    int         bpr;
    int         byte;
    static unsigned maskTab[] = {
	(1 << 7), (1 << 6), (1 << 5), (1 << 4),
	(1 << 3), (1 << 2), (1 << 1), (1 << 0),
    };

    bpr = GLYPH_SIZE(cip, 4);
    for (r = 0; r < (cip->metrics.ascent + cip->metrics.descent); r++) {
	pointer     row = (pointer) cip->bits + r * bpr;

	byte = 0;
	for (l = 0; l <= (cip->metrics.rightSideBearing -
			  cip->metrics.leftSideBearing); l++) {
	    if (maskTab[l & 7] & row[l >> 3])
		putchar('X');
	    else
		putchar('.');
	}
	putchar('\n');
    }
}

#endif