/* ftfont.c -- FreeType font driver.
- Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
- Copyright (C) 2006, 2007, 2008, 2009, 2010
+ Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H13PRO009
enum ftfont_cache_for));
static void ftfont_filter_properties P_ ((Lisp_Object font, Lisp_Object alist));
-
+
Lisp_Object ftfont_font_format P_ ((FcPattern *, Lisp_Object));
#define SYMBOL_FcChar8(SYM) (FcChar8 *) SDATA (SYMBOL_NAME (SYM))
static Lisp_Object
get_adstyle_property (FcPattern *p)
{
- char *str, *end;
+ unsigned char *str, *end;
Lisp_Object adstyle;
if (FcPatternGetString (p, FC_STYLE, 0, (FcChar8 **) &str) != FcResultMatch)
Lisp_Object extra;
{
Lisp_Object key, cache, entity;
- char *file, *str;
+ unsigned char *file, *str;
int index;
int numeric;
double dbl;
else
{
/* As this font is not scalable, parhaps this is a BDF or PCF
- font. */
+ font. */
FT_Face ft_face;
ASET (entity, FONT_ADSTYLE_INDEX, get_adstyle_property (p));
else
spec->script_tag = 0x44464C54; /* "DFLT" */
otf_spec = XCDR (otf_spec);
- val = XCAR (otf_spec);
- if (! NILP (val))
- OTF_SYM_TAG (val, spec->langsys_tag);
- else
- spec->langsys_tag = 0;
+ spec->langsys_tag = 0;
+ if (! NILP (otf_spec))
+ {
+ val = XCAR (otf_spec);
+ if (! NILP (val))
+ OTF_SYM_TAG (val, spec->langsys_tag);
+ otf_spec = XCDR (otf_spec);
+ }
spec->nfeatures[0] = spec->nfeatures[1] = 0;
- for (i = 0; i < 2; i++)
+ for (i = 0; i < 2 && ! NILP (otf_spec); i++, otf_spec = XCDR (otf_spec))
{
Lisp_Object len;
- otf_spec = XCDR (otf_spec);
- if (NILP (otf_spec))
- break;
val = XCAR (otf_spec);
if (NILP (val))
continue;
spacing = XINT (AREF (entity, FONT_SPACING_INDEX));
else
spacing = FC_PROPORTIONAL;
- if (spacing != FC_PROPORTIONAL)
+ if (spacing != FC_PROPORTIONAL
+#ifdef FC_DUAL
+ && spacing != FC_DUAL
+#endif /* FC_DUAL */
+ )
font->min_width = font->average_width = font->space_width
= (scalable ? ft_face->max_advance_width * size / upEM
: ft_face->size->metrics.max_advance >> 6);
#ifdef HAVE_M17N_FLT
+#if (((LIBOTF_MAJOR_VERSION > 1) || (LIBOTF_RELEASE_NUMBER >= 10)) \
+ && ((M17NLIB_MAJOR_VERSION > 1) || (M17NLIB_MINOR_VERSION >= 6)))
+/* We can use the new feature of libotf and m17n-flt to handle the
+ character encoding scheme introduced in Unicode 5.1 and 5.2 for
+ some Agian scripts. */
+#define M17N_FLT_USE_NEW_FEATURE
+#endif
+
struct MFLTFontFT
{
MFLTFont flt_font;
else
tags[n] = spec->features[i][n];
}
+#ifdef M17N_FLT_USE_NEW_FEATURE
+ if (OTF_check_features (otf, i == 0, spec->script, spec->langsys,
+ tags, n - negative) != 1)
+ return 0;
+#else /* not M17N_FLT_USE_NEW_FEATURE */
if (n - negative > 0
&& OTF_check_features (otf, i == 0, spec->script, spec->langsys,
tags, n - negative) != 1)
return 0;
+#endif /* not M17N_FLT_USE_NEW_FEATURE */
}
return 1;
}
memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * size);
}
+#ifdef M17N_FLT_USE_NEW_FEATURE
+
+/* Pack 32-bit OTF tag (0x7F7F7F7F) into 28-bit (0x0FFFFFFF). */
+#define PACK_OTF_TAG(TAG) \
+ ((((TAG) & 0x7F000000) >> 3) \
+ | (((TAG) & 0x7F0000) >> 2) \
+ | (((TAG) & 0x7F00) >> 1) \
+ | ((TAG) & 0x7F))
+
+/* Assuming that FONT is an OpenType font, apply OpenType features
+ specified in SPEC on glyphs between FROM and TO of IN, and record
+ the lastly applied feature in each glyph of IN. If OUT is not
+ NULL, append the resulting glyphs to OUT while storing glyph
+ position adjustment information in ADJUSTMENT. */
+
+static int
+ftfont_drive_otf (font, spec, in, from, to, out, adjustment)
+ MFLTFont *font;
+ MFLTOtfSpec *spec;
+ MFLTGlyphString *in;
+ int from, to;
+ MFLTGlyphString *out;
+ MFLTGlyphAdjustment *adjustment;
+{
+ struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
+ FT_Face ft_face = flt_font_ft->ft_face;
+ OTF *otf = flt_font_ft->otf;
+ int len = to - from;
+ int i, j, gidx;
+ OTF_Glyph *otfg;
+ char script[5], *langsys = NULL;
+ char *gsub_features = NULL, *gpos_features = NULL;
+ OTF_Feature *features;
+
+ if (len == 0)
+ return from;
+ OTF_tag_name (spec->script, script);
+ if (spec->langsys)
+ {
+ langsys = alloca (5);
+ OTF_tag_name (spec->langsys, langsys);
+ }
+ for (i = 0; i < 2; i++)
+ {
+ char *p;
+
+ if (spec->features[i] && spec->features[i][1] != 0xFFFFFFFF)
+ {
+ for (j = 0; spec->features[i][j]; j++);
+ if (i == 0)
+ p = gsub_features = alloca (6 * j);
+ else
+ p = gpos_features = alloca (6 * j);
+ for (j = 0; spec->features[i][j]; j++)
+ {
+ if (spec->features[i][j] == 0xFFFFFFFF)
+ *p++ = '*', *p++ = ',';
+ else
+ {
+ OTF_tag_name (spec->features[i][j], p);
+ p[4] = ',';
+ p += 5;
+ }
+ }
+ *--p = '\0';
+ }
+ }
+
+ setup_otf_gstring (len);
+ for (i = 0; i < len; i++)
+ {
+ otf_gstring.glyphs[i].c = in->glyphs[from + i].c;
+ otf_gstring.glyphs[i].glyph_id = in->glyphs[from + i].code;
+ }
+
+ OTF_drive_gdef (otf, &otf_gstring);
+ gidx = out ? out->used : from;
+
+ if (gsub_features && out)
+ {
+ if (OTF_drive_gsub_with_log (otf, &otf_gstring, script, langsys,
+ gsub_features) < 0)
+ goto simple_copy;
+ if (out->allocated < out->used + otf_gstring.used)
+ return -2;
+ features = otf->gsub->FeatureList.Feature;
+ for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; )
+ {
+ MFLTGlyph *g;
+ int min_from, max_to;
+ int j;
+ int feature_idx = otfg->positioning_type >> 4;
+
+ g = out->glyphs + out->used;
+ *g = in->glyphs[from + otfg->f.index.from];
+ if (g->code != otfg->glyph_id)
+ {
+ g->c = 0;
+ g->code = otfg->glyph_id;
+ g->measured = 0;
+ }
+ out->used++;
+ min_from = g->from;
+ max_to = g->to;
+ if (otfg->f.index.from < otfg->f.index.to)
+ {
+ /* OTFG substitutes multiple glyphs in IN. */
+ for (j = from + otfg->f.index.from + 1;
+ j <= from + otfg->f.index.to; j++)
+ {
+ if (min_from > in->glyphs[j].from)
+ min_from = in->glyphs[j].from;
+ if (max_to < in->glyphs[j].to)
+ max_to = in->glyphs[j].to;
+ }
+ g->from = min_from;
+ g->to = max_to;
+ }
+ if (feature_idx)
+ {
+ unsigned int tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ g->internal = (g->internal & ~0x1FFFFFFF) | tag;
+ }
+ for (i++, otfg++; (i < otf_gstring.used
+ && otfg->f.index.from == otfg[-1].f.index.from);
+ i++, otfg++)
+ {
+ g = out->glyphs + out->used;
+ *g = in->glyphs[from + otfg->f.index.to];
+ if (g->code != otfg->glyph_id)
+ {
+ g->c = 0;
+ g->code = otfg->glyph_id;
+ g->measured = 0;
+ }
+ feature_idx = otfg->positioning_type >> 4;
+ if (feature_idx)
+ {
+ unsigned int tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ g->internal = (g->internal & ~0x1FFFFFFF) | tag;
+ }
+ out->used++;
+ }
+ }
+ }
+ else if (gsub_features)
+ {
+ /* Just for checking which features will be applied. */
+ if (OTF_drive_gsub_with_log (otf, &otf_gstring, script, langsys,
+ gsub_features) < 0)
+ goto simple_copy;
+ features = otf->gsub->FeatureList.Feature;
+ for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; i++,
+ otfg++)
+ {
+ int feature_idx = otfg->positioning_type >> 4;
+
+ if (feature_idx)
+ {
+ unsigned int tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ for (j = otfg->f.index.from; j <= otfg->f.index.to; j++)
+ {
+ MFLTGlyph *g = in->glyphs + (from + j);
+ g->internal = (g->internal & ~0x1FFFFFFF) | tag;
+ }
+ }
+ }
+ }
+ else if (out)
+ {
+ if (out->allocated < out->used + len)
+ return -2;
+ for (i = 0; i < len; i++)
+ out->glyphs[out->used++] = in->glyphs[from + i];
+ }
+
+ if (gpos_features && out)
+ {
+ MFLTGlyph *base = NULL, *mark = NULL, *g;
+ int x_ppem, y_ppem, x_scale, y_scale;
+
+ if (OTF_drive_gpos_with_log (otf, &otf_gstring, script, langsys,
+ gpos_features) < 0)
+ return to;
+ features = otf->gpos->FeatureList.Feature;
+ x_ppem = ft_face->size->metrics.x_ppem;
+ y_ppem = ft_face->size->metrics.y_ppem;
+ x_scale = ft_face->size->metrics.x_scale;
+ y_scale = ft_face->size->metrics.y_scale;
+
+ for (i = 0, otfg = otf_gstring.glyphs, g = out->glyphs + gidx;
+ i < otf_gstring.used; i++, otfg++, g++)
+ {
+ MFLTGlyph *prev;
+ int feature_idx = otfg->positioning_type >> 4;
+
+ if (feature_idx)
+ {
+ unsigned int tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ g->internal = (g->internal & ~0x1FFFFFFF) | tag;
+ }
+
+ if (! otfg->glyph_id)
+ continue;
+ switch (otfg->positioning_type & 0xF)
+ {
+ case 0:
+ break;
+ case 1: /* Single */
+ case 2: /* Pair */
+ {
+ int format = otfg->f.f1.format;
+
+ if (format & OTF_XPlacement)
+ adjustment[i].xoff
+ = otfg->f.f1.value->XPlacement * x_scale / 0x10000;
+ if (format & OTF_XPlaDevice)
+ adjustment[i].xoff
+ += DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, x_ppem);
+ if (format & OTF_YPlacement)
+ adjustment[i].yoff
+ = - (otfg->f.f1.value->YPlacement * y_scale / 0x10000);
+ if (format & OTF_YPlaDevice)
+ adjustment[i].yoff
+ -= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, y_ppem);
+ if (format & OTF_XAdvance)
+ adjustment[i].xadv
+ += otfg->f.f1.value->XAdvance * x_scale / 0x10000;
+ if (format & OTF_XAdvDevice)
+ adjustment[i].xadv
+ += DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, x_ppem);
+ if (format & OTF_YAdvance)
+ adjustment[i].yadv
+ += otfg->f.f1.value->YAdvance * y_scale / 0x10000;
+ if (format & OTF_YAdvDevice)
+ adjustment[i].yadv
+ += DEVICE_DELTA (otfg->f.f1.value->YAdvDevice, y_ppem);
+ adjustment[i].set = 1;
+ }
+ break;
+ case 3: /* Cursive */
+ /* Not yet supported. */
+ break;
+ case 4: /* Mark-to-Base */
+ case 5: /* Mark-to-Ligature */
+ if (! base)
+ break;
+ prev = base;
+ goto label_adjust_anchor;
+ default: /* i.e. case 6 Mark-to-Mark */
+ if (! mark)
+ break;
+ prev = mark;
+
+ label_adjust_anchor:
+ {
+ int base_x, base_y, mark_x, mark_y;
+ int this_from, this_to;
+
+ base_x = otfg->f.f4.base_anchor->XCoordinate * x_scale / 0x10000;
+ base_y = otfg->f.f4.base_anchor->YCoordinate * y_scale / 0x10000;
+ mark_x = otfg->f.f4.mark_anchor->XCoordinate * x_scale / 0x10000;
+ mark_y = otfg->f.f4.mark_anchor->YCoordinate * y_scale / 0x10000;
+
+ if (otfg->f.f4.base_anchor->AnchorFormat != 1)
+ adjust_anchor (ft_face, otfg->f.f4.base_anchor,
+ prev->code, x_ppem, y_ppem, &base_x, &base_y);
+ if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
+ adjust_anchor (ft_face, otfg->f.f4.mark_anchor, g->code,
+ x_ppem, y_ppem, &mark_x, &mark_y);
+ adjustment[i].xoff = (base_x - mark_x);
+ adjustment[i].yoff = - (base_y - mark_y);
+ adjustment[i].back = (g - prev);
+ adjustment[i].xadv = 0;
+ adjustment[i].advance_is_absolute = 1;
+ adjustment[i].set = 1;
+ this_from = g->from;
+ this_to = g->to;
+ for (j = 0; prev + j < g; j++)
+ {
+ if (this_from > prev[j].from)
+ this_from = prev[j].from;
+ if (this_to < prev[j].to)
+ this_to = prev[j].to;
+ }
+ for (; prev <= g; prev++)
+ {
+ prev->from = this_from;
+ prev->to = this_to;
+ }
+ }
+ }
+ if (otfg->GlyphClass == OTF_GlyphClass0)
+ base = mark = g;
+ else if (otfg->GlyphClass == OTF_GlyphClassMark)
+ mark = g;
+ else
+ base = g;
+ }
+ }
+ else if (gpos_features)
+ {
+ if (OTF_drive_gpos_with_log (otf, &otf_gstring, script, langsys,
+ gpos_features) < 0)
+ return to;
+ features = otf->gpos->FeatureList.Feature;
+ for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used;
+ i++, otfg++)
+ if (otfg->positioning_type & 0xF)
+ {
+ int feature_idx = otfg->positioning_type >> 4;
+
+ if (feature_idx)
+ {
+ unsigned int tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ for (j = otfg->f.index.from; j <= otfg->f.index.to; j++)
+ {
+ MFLTGlyph *g = in->glyphs + (from + j);
+ g->internal = (g->internal & ~0x1FFFFFFF) | tag;
+ }
+ }
+ }
+ }
+ return to;
+
+ simple_copy:
+ if (! out)
+ return to;
+ if (out->allocated < out->used + len)
+ return -2;
+ font->get_metrics (font, in, from, to);
+ memcpy (out->glyphs + out->used, in->glyphs + from,
+ sizeof (MFLTGlyph) * len);
+ out->used += len;
+ return to;
+}
+
+static int
+ftfont_try_otf (MFLTFont *font, MFLTOtfSpec *spec,
+ MFLTGlyphString *in, int from, int to)
+{
+ return ftfont_drive_otf (font, spec, in, from, to, NULL, NULL);
+}
+
+#else /* not M17N_FLT_USE_NEW_FEATURE */
static int
ftfont_drive_otf (font, spec, in, from, to, out, adjustment)
return to;
}
+#endif /* not M17N_FLT_USE_NEW_FEATURE */
+
static MFLTGlyphString gstring;
static int m17n_flt_initialized;
if (! m17n_flt_initialized)
{
M17N_INIT ();
+#ifdef M17N_FLT_USE_NEW_FEATURE
+ mflt_enable_new_feature = 1;
+ mflt_try_otf = ftfont_try_otf;
+#endif /* M17N_FLT_USE_NEW_FEATURE */
m17n_flt_initialized = 1;
}
Lisp_Object font;
Lisp_Object alist;
{
- Lisp_Object it;
- int i;
-
- /* Set boolean values to Qt or Qnil */
- for (i = 0; ftfont_booleans[i] != NULL; ++i)
- for (it = alist; ! NILP (it); it = XCDR (it))
- {
- Lisp_Object key = XCAR (XCAR (it));
- Lisp_Object val = XCDR (XCAR (it));
- char *keystr = SDATA (SYMBOL_NAME (key));
-
- if (strcmp (ftfont_booleans[i], keystr) == 0)
- {
- char *str = SYMBOLP (val) ? SDATA (SYMBOL_NAME (val)) : NULL;
- if (INTEGERP (val)) str = XINT (val) != 0 ? "true" : "false";
- if (str == NULL) str = "true";
-
- val = Qt;
- if (strcmp ("false", str) == 0 || strcmp ("False", str) == 0
- || strcmp ("FALSE", str) == 0 || strcmp ("FcFalse", str) == 0
- || strcmp ("off", str) == 0 || strcmp ("OFF", str) == 0
- || strcmp ("Off", str) == 0)
- val = Qnil;
- Ffont_put (font, key, val);
- }
- }
-
- for (i = 0; ftfont_non_booleans[i] != NULL; ++i)
- for (it = alist; ! NILP (it); it = XCDR (it))
- {
- Lisp_Object key = XCAR (XCAR (it));
- Lisp_Object val = XCDR (XCAR (it));
- char *keystr = SDATA (SYMBOL_NAME (key));
- if (strcmp (ftfont_non_booleans[i], keystr) == 0)
- Ffont_put (font, key, val);
- }
+ font_filter_properties (font, alist, ftfont_booleans, ftfont_non_booleans);
}