5 #include FT_TRUETYPE_TABLES_H
6 #include <fontconfig/fontconfig.h>
7 #include <fontconfig/fcfreetype.h>
12 #define PROGNAME "flt-gui"
14 #elif defined (FLT_OTF)
18 #define PROGNAME "flt-otf"
20 #elif defined (FLT_HB)
24 #define PROGNAME "flt-hb"
26 #else /* (defined (FLT_PANGO)) */
29 #define PANGO_ENABLE_ENGINE
30 #define PANGO_ENABLE_BACKEND
31 #include <pango/pango.h>
32 #include <pango/pango-ot.h>
33 #include <pango/pangoft2.h>
34 #include <pango/pangofc-font.h>
37 static FT_Library ft_library;
40 parse_font_name (char *fontname, char **family, int *size, char **err)
46 pat = FcNameParse ((FcChar8 *) fontname);
49 *err = "invalid name format";
52 if (FcPatternGetString (pat, FC_FAMILY, 0, &fam) != FcResultMatch)
54 FcPatternDestroy (pat);
55 *err = "no family name";
58 if (FcPatternGetDouble (pat, FC_PIXEL_SIZE, 0, &pixelsize) != FcResultMatch)
60 *family = strdup ((char *) fam);
62 FcPatternDestroy (pat);
67 new_face (char *fontname, char **err)
77 if (parse_font_name (fontname, (char **) &fam, &size, err) < 0)
80 pat = FcPatternBuild (0,
81 FC_FAMILY, FcTypeString, fam,
82 FC_SCALABLE, FcTypeBool, FcTrue,
85 os = FcObjectSetBuild (FC_FILE, NULL);
86 fs = FcFontList (NULL, pat, os);
89 *err = "no matching font";
92 FcPatternGetString (fs->fonts[0], FC_FILE, 0, &file);
94 if (FT_New_Face (ft_library, (char *) file, 0, &face))
96 FcFontSetDestroy (fs);
97 FcObjectSetDestroy (os);
98 FcPatternDestroy (pat);
99 *err = "font open fail";
102 FcFontSetDestroy (fs);
103 FcObjectSetDestroy (os);
104 FcPatternDestroy (pat);
105 if (FT_Set_Pixel_Sizes (face, pixelsize, pixelsize))
107 *err = "set pixelsize fail";
125 open_font (char *fontname, char **err)
127 FT_Face ft_face = new_face (fontname, err);
137 fontset = mfontset ("generic");
138 mface_put_prop (face, Mfontset, fontset);
139 mplist_add (plist, Mface, face);
140 mplist_add (plist, Mdevice, Mnil);
141 frame = mframe (plist);
142 m17n_object_unref (plist);
143 m17n_object_unref (face);
144 m17n_object_unref (fontset);
146 font = calloc (1, sizeof (MFLTFont));
147 font->font = mfont_encapsulate (frame, Mfreetype, ft_face);
148 font->face = ft_face;
153 close_font (MFLTFont *font)
155 FT_Done_Face (font->face);
157 m17n_object_unref (frame);
161 flt (MText *mt, int from, int to, MFLTFont *font, char *flt_name)
163 MDrawControl control;
165 memset (&control, 0, sizeof (MDrawControl));
166 control.two_dimensional = 1;
167 control.enable_bidi = 1;
168 control.anti_alias = 1;
169 /*control.disable_caching = 1;*/
170 mtext_put_prop (mt, from, to, Mfont, font->font);
171 mdraw_text_extents (frame, mt, from, to, &control, NULL, NULL, NULL);
175 #elif defined (FLT_OTF) || defined (FLT_HB)
183 get_glyph_id (MFLTFont *font, MFLTGlyph *g)
185 FT_Face face = ((FontInfo *) font)->face;
187 g->code = FT_Get_Char_Index (face, g->code);
189 return (g->code ? 0 : -1);
193 get_metric (MFLTFont *font, MFLTGlyphString *gstring, int from, int to)
195 FT_Face face = ((FontInfo *) font)->face;
197 for (; from < to; from++)
199 MFLTGlyph *g = gstring->glyphs + from;
200 FT_Glyph_Metrics *metrics;
202 if (FT_Load_Glyph (face, g->code, FT_LOAD_DEFAULT))
204 metrics = &face->glyph->metrics;
205 g->lbearing = metrics->horiBearingX;
206 g->rbearing = metrics->horiBearingX + metrics->width;
207 g->xadv = metrics->horiAdvance;
208 g->yadv = metrics->vertAdvance;
209 g->ascent = metrics->horiBearingY;
210 g->descent = metrics->height - metrics->horiBearingY;
216 flt (MText *mt, int from, int to, MFLTFont *font, char *flt_name)
218 MFLTGlyphString gstring;
222 memset (&gstring, 0, sizeof (MFLTGlyphString));
223 gstring.glyph_size = sizeof (MFLTGlyph);
224 gstring.allocated = len * 2;
225 gstring.glyphs = alloca (sizeof (MFLTGlyph) * gstring.allocated);
226 for (i = 0; i < len; i++)
227 gstring.glyphs[i].c = mtext_ref_char (mt, from + i);
229 return mflt_run (&gstring, 0, len, font, msymbol (flt_name));
240 #define DEVICE_DELTA(table, size) \
241 (((size) >= (table).StartSize && (size) <= (table).EndSize) \
242 ? ((table).DeltaValue[(size) - (table).StartSize] << 6) \
246 adjust_anchor (OTF_Anchor *anchor, FT_Face face,
247 unsigned code, unsigned x_ppem, unsigned y_ppem, int *x, int *y)
249 if (anchor->AnchorFormat == 2)
252 int ap = anchor->f.f1.AnchorPoint;
254 FT_Load_Glyph (face, (FT_UInt) code, FT_LOAD_MONOCHROME);
255 outline = &face->glyph->outline;
256 if (ap < outline->n_points)
258 *x = outline->points[ap].x;
259 *y = outline->points[ap].y;
262 else if (anchor->AnchorFormat == 3)
264 if (anchor->f.f2.XDeviceTable.offset)
265 *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, x_ppem);
266 if (anchor->f.f2.YDeviceTable.offset)
267 *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, y_ppem);
272 tag_name (char *str, unsigned tag)
275 *str++ = (tag >> 16) & 0xFF;
276 *str++ = (tag >> 8) & 0xFF;
282 encode_features (char *str, int count, unsigned *features)
287 for (i = 0; i < count; i++)
289 unsigned tag = features[i];
299 str = tag_name (str, tag);
312 drive_otf (MFLTFont *font, MFLTOtfSpec *spec,
313 MFLTGlyphString *in, int from, int to,
314 MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
318 OTF *otf = ((FontInfoOTF *) font)->otf;
319 OTF_GlyphString otf_gstring;
321 char script[4], langsys[4];
322 char *gsub_features = NULL, *gpos_features = NULL;
329 otf_gstring.glyphs = NULL;
330 if (OTF_get_table (otf, "head") < 0)
333 ((FontInfoOTF *) font)->otf = NULL;
337 tag_name (script, spec->script);
338 tag_name (langsys, spec->langsys);
340 if (spec->gsub_count > 0)
342 gsub_features = alloca (6 * spec->gsub_count);
345 if (OTF_check_table (otf, "GSUB") < 0)
346 gsub_features = NULL;
348 encode_features (gsub_features, spec->gsub_count, spec->gsub);
351 if (spec->gpos_count)
353 gpos_features = alloca (6 * spec->gpos_count);
356 if (OTF_check_table (otf, "GPOS") < 0)
357 gpos_features = NULL;
359 encode_features (gpos_features, spec->gpos_count, spec->gpos);
363 otf_gstring.size = otf_gstring.used = len;
364 otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len);
365 memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
366 for (i = 0; i < len; i++)
368 otf_gstring.glyphs[i].c = in->glyphs[from + i].c;
369 otf_gstring.glyphs[i].glyph_id = in->glyphs[from + i].code;
372 OTF_drive_gdef (otf, &otf_gstring);
377 if (OTF_drive_gsub (otf, &otf_gstring, script, langsys, gsub_features)
380 if (out->allocated < out->used + otf_gstring.used)
382 for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; i++, otfg++)
384 MFLTGlyph *g = out->glyphs + out->used;
387 *g = in->glyphs[from + otfg->f.index.from];
389 for (j = from + otfg->f.index.from; j <= from + otfg->f.index.to; j++)
390 if (in->glyphs[j].code == otfg->glyph_id)
392 g->c = in->glyphs[j].c;
395 g->code = otfg->glyph_id;
401 if (out->allocated < out->used + len)
403 for (i = 0; i < len; i++)
404 out->glyphs[out->used++] = in->glyphs[from + i];
407 font->get_metric (font, out, gidx, out->used);
412 MFLTGlyph *base = NULL, *mark = NULL, *g;
413 int x_ppem, y_ppem, x_scale, y_scale;
415 if (OTF_drive_gpos (otf, &otf_gstring, script, langsys, gpos_features)
419 face = ((FontInfo *) font)->face;
420 x_ppem = face->size->metrics.x_ppem;
421 y_ppem = face->size->metrics.y_ppem;
422 x_scale = face->size->metrics.x_scale;
423 y_scale = face->size->metrics.y_scale;
425 for (i = 0, otfg = otf_gstring.glyphs, g = out->glyphs + gidx;
426 i < otf_gstring.used; i++, otfg++, g++)
430 if (! otfg->glyph_id)
432 switch (otfg->positioning_type)
438 int format = otfg->f.f1.format;
440 if (format & OTF_XPlacement)
442 = otfg->f.f1.value->XPlacement * x_scale / 0x10000;
443 if (format & OTF_XPlaDevice)
445 += DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, x_ppem);
446 if (format & OTF_YPlacement)
448 = - (otfg->f.f1.value->YPlacement * y_scale / 0x10000);
449 if (format & OTF_YPlaDevice)
451 -= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, y_ppem);
452 if (format & OTF_XAdvance)
454 += otfg->f.f1.value->XAdvance * x_scale / 0x10000;
455 if (format & OTF_XAdvDevice)
457 += DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, x_ppem);
458 if (format & OTF_YAdvance)
460 += otfg->f.f1.value->YAdvance * y_scale / 0x10000;
461 if (format & OTF_YAdvDevice)
463 += DEVICE_DELTA (otfg->f.f1.value->YAdvDevice, y_ppem);
464 adjustment[i].set = 1;
468 /* Not yet supported. */
474 goto label_adjust_anchor;
475 default: /* i.e. case 6 */
482 int base_x, base_y, mark_x, mark_y;
484 base_x = otfg->f.f4.base_anchor->XCoordinate * x_scale / 0x10000;
485 base_y = otfg->f.f4.base_anchor->YCoordinate * y_scale / 0x10000;
486 mark_x = otfg->f.f4.mark_anchor->XCoordinate * x_scale / 0x10000;
487 mark_y = otfg->f.f4.mark_anchor->YCoordinate * y_scale / 0x10000;;
489 if (otfg->f.f4.base_anchor->AnchorFormat != 1)
490 adjust_anchor (otfg->f.f4.base_anchor, face, prev->code,
491 x_ppem, y_ppem, &base_x, &base_y);
492 if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
493 adjust_anchor (otfg->f.f4.mark_anchor, face, g->code,
494 x_ppem, y_ppem, &mark_x, &mark_y);
495 adjustment[i].xoff = (base_x - mark_x);
496 adjustment[i].yoff = - (base_y - mark_y);
497 adjustment[i].back = (g - prev);
498 adjustment[i].set = 1;
501 if (otfg->GlyphClass == OTF_GlyphClass0)
503 else if (otfg->GlyphClass == OTF_GlyphClassMark)
509 free (otf_gstring.glyphs);
513 font->get_metric (font, in, from, to);
514 for (i = 0; i < len; i++)
516 MFLTGlyph *g = in->glyphs + (from + i);
518 out->glyphs[out->used++] = *g;
520 if (otf_gstring.glyphs)
521 free (otf_gstring.glyphs);
526 open_font (char *fontname, char **err)
528 FT_Face face = new_face (fontname, err);
529 FontInfoOTF *font_info;
533 font_info = malloc (sizeof (FontInfoOTF));
534 font_info->font.get_glyph_id = get_glyph_id;
535 font_info->font.get_metric = get_metric;
536 font_info->font.drive_otf = drive_otf;
537 font_info->face = face;
538 font_info->otf = OTF_open_ft_face (face);
539 return ((MFLTFont *) font_info);
543 close_font (MFLTFont *font)
545 FontInfoOTF *font_info = (FontInfoOTF *) font;
547 OTF_close (font_info->otf);
548 FT_Done_Face (font_info->face);
568 HB_StreamRec gdef_stream;
572 MPlist *otf_spec_cache;
576 convertStringToGlyphIndices (HB_Font font, const HB_UChar16 *string,
577 hb_uint32 length, HB_Glyph *glyphs,
578 hb_uint32 *numGlyphs, HB_Bool rightToLeft)
584 getGlyphAdvances (HB_Font font, const HB_Glyph *glyphs, hb_uint32 numGlyphs,
585 HB_Fixed *advances, int flags /*HB_ShaperFlag*/)
589 for (i = 0; i < numGlyphs; i++)
594 canRender (HB_Font font, const HB_UChar16 *string, hb_uint32 length)
600 getPointInOutline (HB_Font font, HB_Glyph glyph, int flags /*HB_ShaperFlag*/,
601 hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos,
604 FT_Face face = font->faceData;
607 if ((error = (HB_Error) FT_Load_Glyph (face, glyph, flags)))
609 if (face->glyph->format != ft_glyph_format_outline)
610 return (HB_Error) HB_Err_Invalid_GPOS_SubTable;
611 *nPoints = face->glyph->outline.n_points;
614 if (point > *nPoints)
615 return (HB_Error) HB_Err_Invalid_GPOS_SubTable;
617 *xpos = face->glyph->outline.points[point].x;
618 *ypos = face->glyph->outline.points[point].y;
624 getGlyphMetrics (HB_Font font, HB_Glyph glyph, HB_GlyphMetrics *metrics)
629 getFontMetric (HB_Font font, HB_FontMetric metric)
634 #define MAKE_TAG(name) ((((FT_ULong) (name)[0]) << 24) \
635 | (((FT_ULong) (name)[1]) << 16) \
636 | (((FT_ULong) (name)[2]) << 8) \
640 new_stream (FT_Face face, char *tagname, HB_Stream stream)
642 FT_ULong tag = MAKE_TAG (tagname);
646 if (! FT_IS_SFNT (face))
647 return HB_Err_Invalid_Argument;
649 if (FT_Load_Sfnt_Table (face, tag, 0, NULL, &len))
650 return HB_Err_Table_Missing;
653 return HB_Err_Out_Of_Memory;
654 if (FT_Load_Sfnt_Table (face, tag, 0, buf, &len))
657 return HB_Err_Table_Missing;
659 stream->base = (HB_Byte *) buf;
662 stream->cursor = NULL;
668 load_gdef (FontInfoHB *font_info)
672 if (! font_info->gdef_stream.base)
674 err = new_stream ((FT_Face) font_info->hb_font.faceData, "GDEF",
675 &font_info->gdef_stream);
676 if (err != HB_Err_Ok)
679 return HB_Load_GDEF_Table (&font_info->gdef_stream, &font_info->gdef);
683 load_gsub (FontInfoHB *font_info)
687 HB_LookupList *lookup_list;
690 if (! font_info->gdef)
692 if ((err = load_gdef (font_info)) != HB_Err_Ok)
695 err = new_stream ((FT_Face) font_info->hb_font.faceData, "GSUB", &stream);
696 if (err != HB_Err_Ok)
698 err = HB_Load_GSUB_Table (&stream, &font_info->gsub,
699 font_info->gdef, &font_info->gdef_stream);
701 lookup_list = &font_info->gsub->LookupList;
702 for (i = 0; i < lookup_list->LookupCount; i++)
703 lookup_list->Properties[i] = HB_GLYPH_PROPERTIES_UNKNOWN;
708 load_gpos (FontInfoHB *font_info)
712 HB_LookupList *lookup_list;
715 if (! font_info->gdef)
717 if ((err = load_gdef (font_info)) != HB_Err_Ok)
720 err = new_stream ((FT_Face) font_info->hb_font.faceData, "GPOS", &stream);
721 if (err != HB_Err_Ok)
723 err = HB_Load_GPOS_Table (&stream, &font_info->gpos,
724 font_info->gdef, &font_info->gdef_stream);
726 lookup_list = &font_info->gpos->LookupList;
727 for (i = 0; i < lookup_list->LookupCount; i++)
728 lookup_list->Properties[i] = HB_GLYPH_PROPERTIES_UNKNOWN;
732 const HB_FontClass hb_fontClass = {
733 convertStringToGlyphIndices, getGlyphAdvances, canRender,
734 getPointInOutline, getGlyphMetrics, getFontMetric
738 setup_features (int gsubp, FontInfoHB *font_info, MFLTOtfSpec *spec,
741 int count, preordered;
742 unsigned int *features;
743 FT_UShort script, langsys;
744 FT_UShort req_feature, index;
745 FT_UInt *feature_list;
751 if (! font_info->gsub)
753 if (load_gsub (font_info) != HB_Err_Ok)
756 if (HB_GSUB_Select_Script (font_info->gsub, spec->script, &script)
761 if (HB_GSUB_Select_Language (font_info->gsub, spec->langsys,
762 script, &langsys, &req_feature)
767 langsys = req_feature = 0xFFFF;
768 count = spec->gsub_count;
769 features = spec->gsub;
773 if (! font_info->gpos)
775 if (load_gpos (font_info) != HB_Err_Ok)
778 if (HB_GPOS_Select_Script (font_info->gpos, spec->script, &script)
783 if (HB_GPOS_Select_Language (font_info->gpos, spec->langsys,
784 script, &langsys, &req_feature)
789 langsys = req_feature = 0xFFFF;
790 count = spec->gpos_count;
791 features = spec->gpos;
794 for (preordered = 0; preordered < count; preordered++)
795 if (features[preordered] == 0)
797 if ((gsubp ? HB_GSUB_Query_Features (font_info->gsub, script, langsys,
799 : HB_GPOS_Query_Features (font_info->gpos, script, langsys,
806 for (i = 0; feature_list[i]; i++);
809 info->indices = malloc (sizeof (FT_UShort) * ((req_feature != 0xFFFF) + i));
811 if (req_feature != 0xFFFF)
812 info->indices[i++] = req_feature;
813 for (j = 0; j < preordered; j++)
814 if ((gsubp ? HB_GSUB_Select_Feature (font_info->gsub, features[j],
815 script, langsys, &index)
816 : HB_GPOS_Select_Feature (font_info->gpos, features[j],
817 script, langsys, &index))
819 info->indices[i++] = index;
821 for (j = 0; feature_list[j]; j++)
823 for (k = preordered + 1; k < count; k++)
824 if (feature_list[j] == features[k])
828 ? HB_GSUB_Select_Feature (font_info->gsub, feature_list[j],
829 script, langsys, &index)
830 : HB_GPOS_Select_Feature (font_info->gpos, feature_list[j],
831 script, langsys, &index))
833 info->indices[i++] = index;
839 setup_otf_spec (MFLTFont *font, MFLTOtfSpec *spec)
841 FontInfoHB *font_info = (FontInfoHB *) font;
844 if (spec->gsub_count + spec->gpos_count == 0)
846 ginfo = mplist_get (font_info->otf_spec_cache, spec->sym);
848 return (ginfo->gsub.count + ginfo->gpos.count > 0 ? ginfo : NULL);
849 ginfo = calloc (1, sizeof (GsubGposInfo));
850 mplist_push (font_info->otf_spec_cache, spec->sym, ginfo);
851 setup_features (1, font_info, spec, &(ginfo->gsub));
852 setup_features (0, font_info, spec, &(ginfo->gpos));
857 drive_otf (MFLTFont *font, MFLTOtfSpec *spec,
858 MFLTGlyphString *in, int from, int to,
859 MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
861 FontInfoHB *font_info = (FontInfoHB *) font;
866 HB_UShort *apply_order_save;
867 HB_UShort apply_count_save;
868 int gpos_applied = 0;
875 if (hb_buffer_new (&buf) != FT_Err_Ok)
877 for (i = from; i < to; i++)
879 if (hb_buffer_add_glyph (buf, in->glyphs[i].code, 0, i) != FT_Err_Ok)
882 ginfo = setup_otf_spec (font, spec);
885 if (ginfo->gsub.count > 0)
887 if (! font_info->gdef
888 && load_gdef (font_info) != HB_Err_Ok)
890 apply_order_save = font_info->gsub->FeatureList.ApplyOrder;
891 apply_count_save = font_info->gsub->FeatureList.ApplyCount;
892 font_info->gsub->FeatureList.ApplyOrder = ginfo->gsub.indices;
893 font_info->gsub->FeatureList.ApplyCount = ginfo->gsub.count;
894 err = HB_GSUB_Apply_String (font_info->gsub, buf);
895 font_info->gsub->FeatureList.ApplyOrder = apply_order_save;
896 font_info->gsub->FeatureList.ApplyCount = apply_count_save;
897 if (err != HB_Err_Ok && err != HB_Err_Not_Covered)
899 if (out->used + buf->in_length > out->allocated)
903 if (ginfo->gpos.count > 0
904 && (font_info->gpos || load_gpos (font_info) == HB_Err_Ok))
906 apply_order_save = font_info->gpos->FeatureList.ApplyOrder;
907 apply_count_save = font_info->gpos->FeatureList.ApplyCount;
908 font_info->gpos->FeatureList.ApplyOrder = ginfo->gpos.indices;
909 font_info->gpos->FeatureList.ApplyCount = ginfo->gpos.count;
910 err = HB_GPOS_Apply_String (&font_info->hb_font, font_info->gpos,
911 FT_LOAD_DEFAULT, buf, FALSE, FALSE);
912 font_info->gpos->FeatureList.ApplyOrder = apply_order_save;
913 font_info->gpos->FeatureList.ApplyCount = apply_count_save;
914 if (err == HB_Err_Ok)
918 for (i = 0; i < buf->in_length; i++)
920 HB_GlyphItem hg = buf->in_string + i;
921 HB_Position pos = buf->positions + i;
924 out->glyphs[out->used] = in->glyphs[hg->cluster];
925 g = out->glyphs + out->used++;
926 if (g->code != hg->gindex)
927 g->c = 0, g->code = hg->gindex;
928 adjustment[i].set = gpos_applied;
931 adjustment[i].xadv = pos->x_advance;
932 adjustment[i].yadv = pos->y_advance;
933 adjustment[i].xoff = pos->x_pos;
934 adjustment[i].yoff = - pos->y_pos;
935 adjustment[i].back = pos->back;
936 adjustment[i].advance_is_absolute = pos->new_advance;
943 hb_buffer_free (buf);
944 for (i = 0; i < len; i++)
945 out->glyphs[out->used++] = in->glyphs[from + i];
950 open_font (char *fontname, char **err)
952 FT_Face face = new_face (fontname, err);
953 FontInfoHB *font_info;
957 font_info = calloc (1, sizeof (FontInfoHB));
958 font_info->font.get_glyph_id = get_glyph_id;
959 font_info->font.get_metric = get_metric;
960 font_info->font.drive_otf = drive_otf;
961 font_info->face = face;
962 font_info->hb_font.klass = &hb_fontClass;
963 font_info->hb_font.faceData = face;
964 font_info->hb_font.userData = NULL;
965 font_info->hb_font.x_ppem = face->size->metrics.x_ppem;
966 font_info->hb_font.x_scale = face->size->metrics.x_scale;
967 font_info->hb_font.y_scale = face->size->metrics.y_scale;
968 font_info->hb_font.y_ppem = face->size->metrics.y_ppem;
969 font_info->otf_spec_cache = mplist ();
970 return ((MFLTFont *) font_info);
974 close_font (MFLTFont *font)
976 FontInfoHB *font_info = (FontInfoHB *) font;
981 HB_Done_GDEF_Table (font_info->gdef);
982 free (font_info->gdef_stream.base);
985 HB_Done_GSUB_Table (font_info->gsub);
987 HB_Done_GPOS_Table (font_info->gpos);
988 FT_Done_Face ((FT_Face) (font_info->hb_font.faceData));
989 for (p = font_info->otf_spec_cache; mplist_key (p) != Mnil;
992 GsubGposInfo *ginfo = mplist_value (p);
994 if (ginfo->gsub.count > 0)
995 free (ginfo->gsub.indices);
996 if (ginfo->gpos.count > 0)
997 free (ginfo->gpos.indices);
999 m17n_object_unref (font_info->otf_spec_cache);
1005 #else /* (defined (FLT_PANGO) */
1010 PangoOTRuleset *ruleset;
1020 PangoFontMap *fontmap;
1021 PangoContext *context;
1022 PangoFcFont *pango_font;
1023 MPlist *otf_spec_cache;
1027 get_glyph_id (MFLTFont *font, MFLTGlyph *g)
1029 FontInfoPango *font_info = (FontInfoPango *) font;
1030 PangoGlyph glyph = pango_fc_font_get_glyph (font_info->pango_font, g->c);
1032 return (glyph ? (int) glyph : -1);
1036 get_metric (MFLTFont *font, MFLTGlyphString *gstring, int from, int to)
1038 FontInfoPango *font_info = (FontInfoPango *) font;
1041 for (i = from; i < to; i++)
1043 MFLTGlyph *g = gstring->glyphs + from;
1044 PangoRectangle inc, logical;
1046 pango_font_get_glyph_extents (PANGO_FONT (font_info->pango_font),
1047 gstring->glyphs[i].code, &inc, &logical);
1048 g->lbearing = inc.x;
1049 g->rbearing = inc.x + inc.width;
1050 g->xadv = logical.width;
1052 g->ascent = - inc.y;
1053 g->descent = inc.height + inc.y;
1058 setup_features (PangoOTTableType type, FontInfoPango *font_info,
1059 MFLTOtfSpec *spec, FeatureInfo *info)
1061 int count, preordered;
1062 unsigned int *features;
1063 guint script, langsys;
1064 guint req_feature, index;
1065 guint *feature_list;
1069 PangoOTInfo *ot_info;
1071 face = pango_fc_font_lock_face (font_info->pango_font);
1072 ot_info = pango_ot_info_get (face);
1073 pango_fc_font_unlock_face (font_info->pango_font);
1075 if (! pango_ot_info_find_script (ot_info, type, spec->script, &script))
1079 if (! pango_ot_info_find_language (ot_info, type, script,
1081 &langsys, &req_feature))
1086 langsys = PANGO_OT_DEFAULT_LANGUAGE;
1087 req_feature = 0xFFFF;
1089 if (type == PANGO_OT_TABLE_GSUB)
1091 count = spec->gsub_count;
1092 features = spec->gsub;
1096 count = spec->gpos_count;
1097 features = spec->gpos;
1099 feature_list = NULL;
1100 for (preordered = 0; preordered < count; preordered++)
1101 if (features[preordered] == 0)
1103 feature_list = pango_ot_info_list_features (ot_info, type, 0,
1110 for (i = 0; feature_list[i]; i++);
1113 info->indices = malloc (sizeof (guint) * ((req_feature != 0xFFFF) + i));
1115 if (req_feature != 0xFFFF)
1116 info->indices[i++] = req_feature;
1117 for (j = 0; j < preordered; j++)
1118 if (pango_ot_info_find_feature (ot_info, type, features[j],
1119 script, langsys, &index))
1120 info->indices[i++] = index;
1122 for (j = 0; feature_list[j]; j++)
1124 for (k = preordered + 1; k < count; k++)
1125 if (feature_list[j] == features[k])
1128 && pango_ot_info_find_feature (ot_info, type, feature_list[j],
1129 script, langsys, &index))
1130 info->indices[i++] = index;
1133 info->ruleset = pango_ot_ruleset_new (ot_info);
1134 for (i = 0; i < info->count; i++)
1135 pango_ot_ruleset_add_feature (info->ruleset, type, info->indices[i],
1136 PANGO_OT_ALL_GLYPHS);
1140 setup_otf_spec (FontInfoPango *font_info, MFLTOtfSpec *spec)
1142 GsubGposInfo *ginfo;
1144 if (spec->gsub_count + spec->gpos_count == 0)
1146 ginfo = mplist_get (font_info->otf_spec_cache, spec->sym);
1148 return (ginfo->gsub.count + ginfo->gpos.count > 0 ? ginfo : NULL);
1149 ginfo = calloc (1, sizeof (GsubGposInfo));
1150 mplist_push (font_info->otf_spec_cache, spec->sym, ginfo);
1151 setup_features (PANGO_OT_TABLE_GSUB, font_info, spec, &(ginfo->gsub));
1152 setup_features (PANGO_OT_TABLE_GPOS, font_info, spec, &(ginfo->gpos));
1157 drive_otf (MFLTFont *font, MFLTOtfSpec *spec,
1158 MFLTGlyphString *in, int from, int to,
1159 MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
1161 FontInfoPango *font_info = (FontInfoPango *) font;
1162 PangoOTBuffer *buffer;
1163 GsubGposInfo *ginfo;
1164 PangoGlyphString *glyphs;
1167 buffer = pango_ot_buffer_new (font_info->pango_font);
1168 for (i = from; i < to; i++)
1169 pango_ot_buffer_add_glyph (buffer, in->glyphs[i].code, 0, i);
1170 ginfo = setup_otf_spec (font_info, spec);
1173 if (ginfo->gsub.count > 0)
1174 pango_ot_ruleset_substitute (ginfo->gsub.ruleset, buffer);
1175 if (ginfo->gpos.count > 0)
1176 pango_ot_ruleset_position (ginfo->gpos.ruleset, buffer);
1177 glyphs = pango_glyph_string_new ();
1178 pango_ot_buffer_output (buffer, glyphs);
1179 for (i = 0; i < glyphs->num_glyphs; i++)
1181 PangoGlyphInfo *glyph_info = glyphs->glyphs + i;
1184 out->glyphs[out->used] = in->glyphs[glyphs->log_clusters[i]];
1185 g = out->glyphs + out->used++;
1186 if (g->code != glyph_info->glyph)
1187 g->c = 0, g->code = glyph_info->glyph;
1188 g->xoff = glyph_info->geometry.x_offset;
1189 g->yoff = glyph_info->geometry.y_offset;
1190 g->xadv = glyph_info->geometry.width;
1192 adjustment[i].set = 0;
1194 pango_ot_buffer_destroy (buffer);
1195 pango_glyph_string_free (glyphs);
1199 pango_ot_buffer_destroy (buffer);
1200 for (i = from; i < to; i++)
1201 out->glyphs[out->used++] = in->glyphs[i];
1207 open_font (char *fontname, char **err)
1209 FontInfoPango *font_info = NULL;
1210 PangoFontMap *fontmap;
1211 PangoContext *context;
1212 PangoFontDescription *desc;
1213 PangoFont *pango_font;
1218 if (parse_font_name (fontname, &family, &size, err) < 0)
1220 desc = pango_font_description_new ();
1221 pango_font_description_set_family (desc, family);
1223 pango_size = size * PANGO_SCALE;
1224 pango_font_description_set_absolute_size (desc, pango_size);
1226 fontmap = pango_ft2_font_map_new ();
1227 context = pango_context_new ();
1228 pango_context_set_font_map (context, fontmap);
1229 pango_font = pango_context_load_font (context, desc);
1230 pango_font_description_free (desc);
1233 font_info = calloc (1, sizeof (FontInfoPango));
1234 font_info->fontmap = fontmap;
1235 font_info->context = context;
1236 font_info->pango_font = PANGO_FC_FONT (pango_font);
1240 g_object_unref (context);
1241 g_object_unref (fontmap);
1243 return (MFLTFont *) font_info;
1247 close_font (MFLTFont *font)
1249 FontInfoPango *font_info = (FontInfoPango *) font;
1251 g_object_unref (font_info->context);
1252 g_object_unref (font_info->fontmap);
1256 flt (MText *mt, int from, int to, MFLTFont *font, char *flt_name)
1258 MFLTGlyphString gstring;
1259 int len = to - from;
1262 memset (&gstring, 0, sizeof (MFLTGlyphString));
1263 gstring.glyph_size = sizeof (MFLTGlyph);
1264 gstring.allocated = len * 2;
1265 gstring.glyphs = alloca (sizeof (MFLTGlyph) * gstring.allocated);
1266 for (i = 0; i < len; i++)
1267 gstring.glyphs[i].c = mtext_ref_char (mt, from + i);
1269 return mflt_run (&gstring, 0, len, font, msymbol (flt_name));
1275 main (int argc, char **argv)
1277 char *font_name, *flt_name;
1285 fprintf (stderr, "Usage: flt FONT-NAME FLT-NAME < TEXT-FILE\n");
1289 font_name = argv[1];
1292 FT_Init_FreeType (&ft_library);
1294 font = open_font (font_name, &err);
1297 fprintf (stderr, "Font error: %s: %s\n", argv[1], err);
1301 mt = mconv_decode_stream (msymbol ("utf-8"), stdin);
1302 len = mtext_len (mt);
1303 for (i = 0, j = mtext_character (mt, i, len, '\n'); i < len;
1304 i = j + 1, j = mtext_character (mt, i, len, '\n'))
1308 if (flt (mt, i, j, font, flt_name) < 0)
1310 fprintf (stderr, "Error in FLT processing.\n");
1314 m17n_object_unref (mt);