#include <stdio.h>
#include <stdlib.h>
+#ifdef HAVE_LIBT1
+#include <t1lib.h>
+#endif
+
+
/*
=head1 NAME
*/
-
-
-
-
-
-
-
-
/*
=item i_init_fonts()
static int t1_get_flags(char const *flags);
static char *t1_from_utf8(char const *in, int len, int *outlen);
+static void t1_push_error(void);
+
+static int t1_active_fonts = 0;
+static int t1_initialized = 0;
+
/*
=item i_init_t1(t1log)
i_init_t1(int t1log) {
int init_flags = IGNORE_CONFIGFILE|IGNORE_FONTDATABASE;
mm_log((1,"init_t1()\n"));
+
+ if (t1_active_fonts) {
+ mm_log((1, "Cannot re-initialize T1 - active fonts\n"));
+ return 1;
+ }
+
+ if (t1_initialized) {
+ T1_CloseLib();
+ }
if (t1log)
init_flags |= LOGFILE;
}
T1_SetLogLevel(T1LOG_DEBUG);
i_t1_set_aa(1); /* Default Antialias value */
+
+ ++t1_initialized;
+
return(0);
}
void
i_close_t1(void) {
T1_CloseLib();
+ t1_initialized = 0;
}
if (T1_SetAfmFileName(font_id,afm)<0) mm_log((1,"i_t1_new: afm loading of '%s' failed.\n",afm));
}
+ ++t1_active_fonts;
+
return font_id;
}
int
i_t1_destroy(int font_id) {
mm_log((1,"i_t1_destroy(font_id %d)\n",font_id));
+
+ --t1_active_fonts;
+
return T1_DeleteFont(font_id);
}
=cut
*/
-void
+int
i_t1_bbox(int fontnum,float points,char *str,int len,int cords[6], int utf8,char const *flags) {
BBox bbox;
BBox gbbox;
int mod_flags = t1_get_flags(flags);
+ int advance;
mm_log((1,"i_t1_bbox(fontnum %d,points %.2f,str '%.*s', len %d)\n",fontnum,points,len,str,len));
T1_LoadFont(fontnum); /* FIXME: Here a return code is ignored - haw haw haw */
bbox = T1_GetStringBBox(fontnum,str,len,0,mod_flags);
}
gbbox = T1_GetFontBBox(fontnum);
+ advance = T1_GetStringWidth(fontnum, str, len, 0, mod_flags);
mm_log((1,"bbox: (%d,%d,%d,%d)\n",
(int)(bbox.llx*points/1000),
(int)(bbox.ury*points/1000) ));
- cords[0]=((float)bbox.llx*points)/1000;
- cords[2]=((float)bbox.urx*points)/1000;
+ cords[BBOX_NEG_WIDTH]=((float)bbox.llx*points)/1000;
+ cords[BBOX_POS_WIDTH]=((float)bbox.urx*points)/1000;
+
+ cords[BBOX_GLOBAL_DESCENT]=((float)gbbox.lly*points)/1000;
+ cords[BBOX_GLOBAL_ASCENT]=((float)gbbox.ury*points)/1000;
+
+ cords[BBOX_DESCENT]=((float)bbox.lly*points)/1000;
+ cords[BBOX_ASCENT]=((float)bbox.ury*points)/1000;
- cords[1]=((float)gbbox.lly*points)/1000;
- cords[3]=((float)gbbox.ury*points)/1000;
+ cords[BBOX_ADVANCE_WIDTH] = ((float)advance * points)/1000;
+ cords[BBOX_RIGHT_BEARING] =
+ cords[BBOX_ADVANCE_WIDTH] - cords[BBOX_POS_WIDTH];
- cords[4]=((float)bbox.lly*points)/1000;
- cords[5]=((float)bbox.ury*points)/1000;
+ return BBOX_RIGHT_BEARING+1;
}
return out;
}
+/*
+=item i_t1_has_chars(font_num, text, len, utf8, out)
+
+Check if the given characters are defined by the font. Note that len
+is the number of bytes, not the number of characters (when utf8 is
+non-zero).
+
+out[char index] will be true if the character exists.
+
+Accepts UTF-8, but since T1 can only have 256 characters, any chars
+with values over 255 will simply be returned as false.
+
+Returns the number of characters that were checked.
+
+=cut
+*/
+
+int
+i_t1_has_chars(int font_num, const char *text, int len, int utf8,
+ char *out) {
+ int count = 0;
+
+ mm_log((1, "i_t1_has_chars(font_num %d, text %p, len %d, utf8 %d)\n",
+ font_num, text, len, utf8));
+
+ i_clear_error();
+ if (T1_LoadFont(font_num)) {
+ t1_push_error();
+ return 0;
+ }
+
+ while (len) {
+ unsigned long c;
+ if (utf8) {
+ c = i_utf8_advance(&text, &len);
+ if (c == ~0UL) {
+ i_push_error(0, "invalid UTF8 character");
+ return 0;
+ }
+ }
+ else {
+ c = (unsigned char)*text++;
+ --len;
+ }
+
+ if (c >= 0x100) {
+ /* limit of 256 characters for T1 */
+ *out++ = 0;
+ }
+ else {
+ char const * name = T1_GetCharName(font_num, (unsigned char)c);
+
+ if (name) {
+ *out++ = strcmp(name, ".notdef") != 0;
+ }
+ else {
+ mm_log((2, " No name found for character %lx\n", c));
+ *out++ = 0;
+ }
+ }
+ ++count;
+ }
+
+ return count;
+}
+
+/*
+=item i_t1_face_name(font_num, name_buf, name_buf_size)
+
+Copies the face name of the given C<font_num> to C<name_buf>. Returns
+the number of characters required to store the name (which can be
+larger than C<name_buf_size>, including the space required to store
+the terminating NUL).
+
+If name_buf is too small (as specified by name_buf_size) then the name
+will be truncated. name_buf will always be NUL termintaed.
+
+=cut
+*/
+
+int
+i_t1_face_name(int font_num, char *name_buf, size_t name_buf_size) {
+ char *name;
+
+ T1_errno = 0;
+ if (T1_LoadFont(font_num)) {
+ t1_push_error();
+ return 0;
+ }
+ name = T1_GetFontName(font_num);
+
+ if (name) {
+ strncpy(name_buf, name, name_buf_size);
+ name_buf[name_buf_size-1] = '\0';
+ return strlen(name) + 1;
+ }
+ else {
+ t1_push_error();
+ return 0;
+ }
+}
+
+int
+i_t1_glyph_name(int font_num, unsigned long ch, char *name_buf,
+ size_t name_buf_size) {
+ char *name;
+
+ i_clear_error();
+ if (ch > 0xFF) {
+ return 0;
+ }
+ if (T1_LoadFont(font_num)) {
+ t1_push_error();
+ return 0;
+ }
+ name = T1_GetCharName(font_num, (unsigned char)ch);
+ if (name) {
+ if (strcmp(name, ".notdef")) {
+ strncpy(name_buf, name, name_buf_size);
+ name_buf[name_buf_size-1] = '\0';
+ return strlen(name) + 1;
+ }
+ else {
+ return 0;
+ }
+ }
+ else {
+ t1_push_error();
+ return 0;
+ }
+}
+
+static void
+t1_push_error(void) {
+ switch (T1_errno) {
+ case 0:
+ i_push_error(0, "No error");
+ break;
+
+#ifdef T1ERR_SCAN_FONT_FORMAT
+ case T1ERR_SCAN_FONT_FORMAT:
+ i_push_error(T1ERR_SCAN_FONT_FORMAT, "SCAN_FONT_FORMAT");
+ break;
+#endif
+
+#ifdef T1ERR_SCAN_FILE_OPEN_ERR
+ case T1ERR_SCAN_FILE_OPEN_ERR:
+ i_push_error(T1ERR_SCAN_FILE_OPEN_ERR, "SCAN_FILE_OPEN_ERR");
+ break;
+#endif
+
+#ifdef T1ERR_SCAN_OUT_OF_MEMORY
+ case T1ERR_SCAN_OUT_OF_MEMORY:
+ i_push_error(T1ERR_SCAN_OUT_OF_MEMORY, "SCAN_OUT_OF_MEMORY");
+ break;
+#endif
+
+#ifdef T1ERR_SCAN_ERROR
+ case T1ERR_SCAN_ERROR:
+ i_push_error(T1ERR_SCAN_ERROR, "SCAN_ERROR");
+ break;
+#endif
+
+#ifdef T1ERR_SCAN_FILE_EOF
+ case T1ERR_SCAN_FILE_EOF:
+ i_push_error(T1ERR_SCAN_FILE_EOF, "SCAN_FILE_EOF");
+ break;
+#endif
+
+#ifdef T1ERR_PATH_ERROR
+ case T1ERR_PATH_ERROR:
+ i_push_error(T1ERR_PATH_ERROR, "PATH_ERROR");
+ break;
+#endif
+
+#ifdef T1ERR_PARSE_ERROR
+ case T1ERR_PARSE_ERROR:
+ i_push_error(T1ERR_PARSE_ERROR, "PARSE_ERROR");
+ break;
+#endif
+
+#ifdef T1ERR_TYPE1_ABORT
+ case T1ERR_TYPE1_ABORT:
+ i_push_error(T1ERR_TYPE1_ABORT, "TYPE1_ABORT");
+ break;
+#endif
+
+#ifdef T1ERR_INVALID_FONTID
+ case T1ERR_INVALID_FONTID:
+ i_push_error(T1ERR_INVALID_FONTID, "INVALID_FONTID");
+ break;
+#endif
+
+#ifdef T1ERR_INVALID_PARAMETER
+ case T1ERR_INVALID_PARAMETER:
+ i_push_error(T1ERR_INVALID_PARAMETER, "INVALID_PARAMETER");
+ break;
+#endif
+
+#ifdef T1ERR_OP_NOT_PERMITTED
+ case T1ERR_OP_NOT_PERMITTED:
+ i_push_error(T1ERR_OP_NOT_PERMITTED, "OP_NOT_PERMITTED");
+ break;
+#endif
+
+#ifdef T1ERR_ALLOC_MEM
+ case T1ERR_ALLOC_MEM:
+ i_push_error(T1ERR_ALLOC_MEM, "ALLOC_MEM");
+ break;
+#endif
+
+#ifdef T1ERR_FILE_OPEN_ERR
+ case T1ERR_FILE_OPEN_ERR:
+ i_push_error(T1ERR_FILE_OPEN_ERR, "FILE_OPEN_ERR");
+ break;
+#endif
+
+#ifdef T1ERR_UNSPECIFIED
+ case T1ERR_UNSPECIFIED:
+ i_push_error(T1ERR_UNSPECIFIED, "UNSPECIFIED");
+ break;
+#endif
+
+#ifdef T1ERR_NO_AFM_DATA
+ case T1ERR_NO_AFM_DATA:
+ i_push_error(T1ERR_NO_AFM_DATA, "NO_AFM_DATA");
+ break;
+#endif
+
+#ifdef T1ERR_X11
+ case T1ERR_X11:
+ i_push_error(T1ERR_X11, "X11");
+ break;
+#endif
+
+#ifdef T1ERR_COMPOSITE_CHAR
+ case T1ERR_COMPOSITE_CHAR:
+ i_push_error(T1ERR_COMPOSITE_CHAR, "COMPOSITE_CHAR");
+ break;
+#endif
+
+ default:
+ i_push_errorf(T1_errno, "unknown error %d", (int)T1_errno);
+ }
+}
+
#endif /* HAVE_LIBT1 */
/* Truetype font support */
-
#ifdef HAVE_LIBTT
+/* These are enabled by default when configuring Freetype 1.x
+ I haven't a clue how to reliably detect it at compile time.
+
+ We need a compilation probe in Makefile.PL
+*/
+#define FTXPOST 1
+#define FTXERR18 1
+
#include <freetype.h>
#define TT_CHC 5
+#ifdef FTXPOST
+#include <ftxpost.h>
+#endif
+
+#ifdef FTXERR18
+#include <ftxerr18.h>
+#endif
+
+/* some versions of FT1.x don't seem to define this - it's font defined
+ so it won't change */
+#ifndef TT_MS_LANGID_ENGLISH_GENERAL
+#define TT_MS_LANGID_ENGLISH_GENERAL 0x0409
+#endif
+
/* convert a code point into an index in the glyph cache */
#define TT_HASH(x) ((x) & 0xFF)
TT_Face_Properties properties;
TT_Instancehandle instanceh[TT_CHC];
TT_CharMap char_map;
+#ifdef FTXPOST
+ int loaded_names;
+ TT_Error load_cond;
+#endif
};
/* Defines */
#define USTRCT(x) ((x).z)
#define TT_VALID( handle ) ( ( handle ).z != NULL )
+static void i_tt_push_error(TT_Error rc);
/* Prototypes */
mm_log((1,"Initialization of freetype failed, code = 0x%x\n",error));
return(1);
}
+
+#ifdef FTXPOST
+ error = TT_Init_Post_Extension( engine );
+ if (error) {
+ mm_log((1, "Initialization of Post extension failed = 0x%x\n", error));
+ return 1;
+ }
+#endif
+
return(0);
}
TT_Fonthandle *handle;
unsigned short i,n;
unsigned short platform,encoding;
+
+ i_clear_error();
mm_log((1,"i_tt_new(fontname '%s')\n",fontname));
mm_log((1, "Error while opening %s, error code = 0x%x.\n",fontname,
error ));
}
+ i_tt_push_error(error);
return NULL;
}
handle->instanceh[i].smooth=-1;
}
+#ifdef FTXPOST
+ handle->loaded_names = 0;
+#endif
+
mm_log((1,"i_tt_new <- 0x%X\n",handle));
return handle;
}
i_tt_has_chars(TT_Fonthandle *handle, char const *text, int len, int utf8,
char *out) {
int count = 0;
- int inst;
- mm_log((1, "i_ft2_has_chars(handle %p, text %p, len %d, utf8 %d)\n",
+ mm_log((1, "i_tt_has_chars(handle %p, text %p, len %d, utf8 %d)\n",
handle, text, len, utf8));
while (len) {
TT_Raster_Map *small_bit, int cords[6],
char const* txt, int len, int smooth, int utf8 ) {
unsigned long j;
- int i;
TT_F26Dot6 x,y;
mm_log((1,"i_tt_render_all_glyphs( handle 0x%X, inst %d, bit 0x%X, small_bit 0x%X, txt '%.*s', len %d, smooth %d, utf8 %d)\n",
return 0;
}
- /* ascent = ( handle->properties.horizontal->Ascender * handle->instanceh[inst].imetrics.y_ppem ) / handle->properties.header->Units_Per_EM; */
-
if ( smooth ) i_tt_done_raster_map( &small_bit );
return 1;
}
*/
undef_int
-i_tt_cp( TT_Fonthandle *handle, i_img *im, int xb, int yb, int channel, float points, char const* txt, int len, int smooth, int utf8 ) {
+i_tt_cp( TT_Fonthandle *handle, i_img *im, int xb, int yb, int channel, float points, char const* txt, int len, int smooth, int utf8, int align ) {
- int cords[6];
- int ascent, st_offset;
+ int cords[BOUNDING_BOX_COUNT];
+ int ascent, st_offset, y;
TT_Raster_Map bit;
i_clear_error();
if (! i_tt_rasterize( handle, &bit, cords, points, txt, len, smooth, utf8 ) ) return 0;
- ascent=cords[5];
- st_offset=cords[0];
+ ascent=cords[BBOX_ASCENT];
+ st_offset=cords[BBOX_NEG_WIDTH];
+ y = align ? yb-ascent : yb;
- i_tt_dump_raster_map_channel( im, &bit, xb-st_offset , yb-ascent, channel, smooth );
+ i_tt_dump_raster_map_channel( im, &bit, xb-st_offset , y, channel, smooth );
i_tt_done_raster_map( &bit );
return 1;
*/
undef_int
-i_tt_text( TT_Fonthandle *handle, i_img *im, int xb, int yb, i_color *cl, float points, char const* txt, int len, int smooth, int utf8) {
- int cords[6];
- int ascent, st_offset;
+i_tt_text( TT_Fonthandle *handle, i_img *im, int xb, int yb, i_color *cl, float points, char const* txt, int len, int smooth, int utf8, int align) {
+ int cords[BOUNDING_BOX_COUNT];
+ int ascent, st_offset, y;
TT_Raster_Map bit;
i_clear_error();
if (! i_tt_rasterize( handle, &bit, cords, points, txt, len, smooth, utf8 ) ) return 0;
- ascent=cords[5];
- st_offset=cords[0];
+ ascent=cords[BBOX_ASCENT];
+ st_offset=cords[BBOX_NEG_WIDTH];
+ y = align ? yb-ascent : yb;
- i_tt_dump_raster_map2( im, &bit, xb+st_offset, yb-ascent, cl, smooth );
+ i_tt_dump_raster_map2( im, &bit, xb+st_offset, y, cl, smooth );
i_tt_done_raster_map( &bit );
return 1;
static
undef_int
-i_tt_bbox_inst( TT_Fonthandle *handle, int inst ,const char *txt, int len, int cords[6], int utf8 ) {
- int i, upm, casc, cdesc, first;
+i_tt_bbox_inst( TT_Fonthandle *handle, int inst ,const char *txt, int len, int cords[BOUNDING_BOX_COUNT], int utf8 ) {
+ int upm, casc, cdesc, first;
int start = 0;
int width = 0;
int gascent = 0;
int descent = 0;
int ascent = 0;
-
+ int rightb = 0;
unsigned long j;
unsigned char *ustr;
descent = (gm->bbox.yMin-63) / 64;
first = 0;
}
- if (i == len-1) {
+ if (!len) { /* if at end of string */
/* the right-side bearing - in case the right-side of a
character goes past the right of the advance width,
as is common for italic fonts
*/
- int rightb = gm->advance - gm->bearingX
+ rightb = gm->advance - gm->bearingX
- (gm->bbox.xMax - gm->bbox.xMin);
/* fprintf(stderr, "font info last: %d %d %d %d\n",
gm->bbox.xMax, gm->bbox.xMin, gm->advance, rightb); */
- if (rightb < 0)
- width -= rightb/64;
}
ascent = (ascent > casc ? ascent : casc );
}
}
- cords[0]=start;
- cords[1]=gdescent;
- cords[2]=width;
- cords[3]=gascent;
- cords[4]=descent;
- cords[5]=ascent;
- return 1;
+ cords[BBOX_NEG_WIDTH]=start;
+ cords[BBOX_GLOBAL_DESCENT]=gdescent;
+ cords[BBOX_POS_WIDTH]=width;
+ if (rightb < 0)
+ cords[BBOX_POS_WIDTH] -= rightb / 64;
+ cords[BBOX_GLOBAL_ASCENT]=gascent;
+ cords[BBOX_DESCENT]=descent;
+ cords[BBOX_ASCENT]=ascent;
+ cords[BBOX_ADVANCE_WIDTH] = width;
+ cords[BBOX_RIGHT_BEARING] = rightb / 64;
+
+ return BBOX_RIGHT_BEARING + 1;
}
return i_tt_bbox_inst(handle, inst, txt, len, cords, utf8);
}
+/*
+=item i_tt_face_name(handle, name_buf, name_buf_size)
+
+Retrieve's the font's postscript name.
+
+This is complicated by the need to handle encodings and so on.
+
+=cut
+ */
+int
+i_tt_face_name(TT_Fonthandle *handle, char *name_buf, size_t name_buf_size) {
+ TT_Face_Properties props;
+ int name_count;
+ int i;
+ TT_UShort platform_id, encoding_id, lang_id, name_id;
+ TT_UShort name_len;
+ TT_String *name;
+ int want_index = -1; /* an acceptable but not perfect name */
+ int score = 0;
+
+ i_clear_error();
+
+ TT_Get_Face_Properties(handle->face, &props);
+ name_count = props.num_Names;
+ for (i = 0; i < name_count; ++i) {
+ TT_Get_Name_ID(handle->face, i, &platform_id, &encoding_id, &lang_id,
+ &name_id);
+
+ TT_Get_Name_String(handle->face, i, &name, &name_len);
+
+ if (platform_id != TT_PLATFORM_APPLE_UNICODE && name_len
+ && name_id == TT_NAME_ID_PS_NAME) {
+ int might_want_index = -1;
+ int might_score = 0;
+ if ((platform_id == TT_PLATFORM_MACINTOSH && encoding_id == TT_MAC_ID_ROMAN)
+ ||
+ (platform_id == TT_PLATFORM_MICROSOFT && encoding_id == TT_MS_LANGID_ENGLISH_UNITED_STATES)) {
+ /* exactly what we want */
+ want_index = i;
+ break;
+ }
+
+ if (platform_id == TT_PLATFORM_MICROSOFT
+ && (encoding_id & 0xFF) == TT_MS_LANGID_ENGLISH_GENERAL) {
+ /* any english is good */
+ might_want_index = i;
+ might_score = 9;
+ }
+ /* there might be something in between */
+ else {
+ /* anything non-unicode is better than nothing */
+ might_want_index = i;
+ might_score = 1;
+ }
+ if (might_score > score) {
+ score = might_score;
+ want_index = might_want_index;
+ }
+ }
+ }
+
+ if (want_index != -1) {
+ TT_Get_Name_String(handle->face, want_index, &name, &name_len);
+
+ strncpy(name_buf, name, name_buf_size);
+ name_buf[name_buf_size-1] = '\0';
+
+ return strlen(name) + 1;
+ }
+ else {
+ i_push_error(0, "no face name present");
+ return 0;
+ }
+}
+void i_tt_dump_names(TT_Fonthandle *handle) {
+ TT_Face_Properties props;
+ int name_count;
+ int i;
+ TT_UShort platform_id, encoding_id, lang_id, name_id;
+ TT_UShort name_len;
+ TT_String *name;
+
+ TT_Get_Face_Properties(handle->face, &props);
+ name_count = props.num_Names;
+ for (i = 0; i < name_count; ++i) {
+ TT_Get_Name_ID(handle->face, i, &platform_id, &encoding_id, &lang_id,
+ &name_id);
+ TT_Get_Name_String(handle->face, i, &name, &name_len);
+
+ printf("# %d: plat %d enc %d lang %d name %d value ", i, platform_id,
+ encoding_id, lang_id, name_id);
+ if (platform_id == TT_PLATFORM_APPLE_UNICODE) {
+ printf("(unicode)\n");
+ }
+ else {
+ printf("'%s'\n", name);
+ }
+ }
+}
+
+int
+i_tt_glyph_name(TT_Fonthandle *handle, unsigned long ch, char *name_buf,
+ size_t name_buf_size) {
+#ifdef FTXPOST
+ TT_Error rc;
+ TT_String *psname;
+ TT_UShort index;
+
+ i_clear_error();
+
+ if (!handle->loaded_names) {
+ TT_Post post;
+ mm_log((1, "Loading PS Names"));
+ handle->load_cond = TT_Load_PS_Names(handle->face, &post);
+ ++handle->loaded_names;
+ }
+
+ if (handle->load_cond) {
+ i_push_errorf(rc, "error loading names (%d)", handle->load_cond);
+ return 0;
+ }
+
+ index = TT_Char_Index(handle->char_map, ch);
+ if (!index) {
+ i_push_error(0, "no such character");
+ return 0;
+ }
+
+ rc = TT_Get_PS_Name(handle->face, index, &psname);
+
+ if (rc) {
+ i_push_error(rc, "error getting name");
+ return 0;
+ }
+
+ strncpy(name_buf, psname, name_buf_size);
+ name_buf[name_buf_size-1] = '\0';
+
+ return strlen(psname) + 1;
+#else
+ mm_log((1, "FTXPOST extension not enabled\n"));
+ i_clear_error();
+ i_push_error(0, "Use of FTXPOST extension disabled");
+
+ return 0;
+#endif
+}
+
+/*
+=item i_tt_push_error(code)
+
+Push an error message and code onto the Imager error stack.
+
+=cut
+*/
+static void
+i_tt_push_error(TT_Error rc) {
+#ifdef FTXERR18
+ TT_String const *msg = TT_ErrToString18(rc);
+
+ i_push_error(rc, msg);
+#else
+ i_push_errorf(rc, "Error code 0x%04x", (unsigned)rc);
+#endif
+}
#endif /* HAVE_LIBTT */
projects / imager.git / blobdiff