/* font-ft.c -- FreeType interface sub-module.
- Copyright (C) 2003, 2004
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H15PRO112
#include "plist.h"
#include "symbol.h"
#include "language.h"
+#include "internal-flt.h"
#include "internal-gui.h"
#include "font.h"
#include "face.h"
#include FT_BDF_H
#endif
-static int mdebug_mask = MDEBUG_FONT;
+static int mdebug_flag = MDEBUG_FONT;
#ifdef HAVE_FONTCONFIG
#include <fontconfig/fcfreetype.h>
(s1) = alloca (len), (size) = len; \
for (p1 = (s1), p2 = (s2); *p2; p1++, p2++) \
*p1 = (*p2 >= 'A' && *p2 <= 'Z' ? *p2 + 'a' - 'A' : *p2); \
- while (p1 > (s1) && p1[-1] == ' ') p1--; \
*p1 = '\0'; \
} while (0)
-static MPlist *ft_list_family (MSymbol, int);
+static MPlist *ft_list_family (MSymbol, int, int);
static void
free_ft_rfont (void *object)
file = msymbol (filename);
if (family != last_family)
{
- pl = MPLIST_PLIST (ft_list_family (family, 0));
+ pl = MPLIST_PLIST (ft_list_family (family, 0, 1));
last_family = family;
}
ft_info = mplist_get (pl, file);
MPlist *plist = NULL, *pl, *p;
if (! ft_font_list)
- ft_list_family (Mnil, 0);
+ ft_list_family (Mnil, 0, 1);
if (mt)
{
scan all fonts and return ft_font_list. */
static MPlist *
-ft_list_family (MSymbol family, int check_generic)
+ft_list_family (MSymbol family, int check_generic, int check_alias)
{
MPlist *plist;
#ifdef HAVE_FONTCONFIG
MPLIST_DO (plist, ft_font_list)
{
if (! MPLIST_VAL (plist))
- ft_list_family (MPLIST_KEY (plist), 0);
+ ft_list_family (MPLIST_KEY (plist), 0, 1);
}
all_fonts_scaned = 1;
}
FcChar8 *fam8;
if (family != generic)
- plist = ft_list_family (generic, 1);
+ plist = ft_list_family (generic, 1, 1);
else
{
fam = MSYMBOL_NAME (family);
family = msymbol (buf);
if (msymbol_get (family, Mgeneric_family))
break;
- pl = ft_list_family (family, 0);
+ pl = ft_list_family (family, 0, 1);
if (! pl)
continue;
MPLIST_DO (pl, MPLIST_PLIST (pl))
plist = ft_font_list;
}
}
- else
+ else if (check_alias)
{
/* Check if there exist an alias. */
pl = mplist ();
FcPatternGetString (pattern, FC_FAMILY, i, (FcChar8 **) &fam);
STRDUP_LOWER (buf, bufsize, fam);
sym = msymbol (buf);
- p = MPLIST_PLIST (ft_list_family (sym, 0));
+ p = MPLIST_PLIST (ft_list_family (sym, 0, 0));
if (! MPLIST_TAIL_P (p))
MPLIST_DO (p, p)
mplist_push (pl, Mt, MPLIST_VAL (p));
}
}
}
+ else
+ {
+ pl = mplist ();
+ plist = mplist_add (ft_font_list, family, pl);
+ }
#else /* not HAVE_FONTCONFIG */
}
static int
-ft_check_otf (MFontFT *ft_info, MFontCapability *cap, FT_Face ft_face)
+ft_check_cap_otf (MFontFT *ft_info, MFontCapability *cap, FT_Face ft_face)
{
#ifdef HAVE_OTF
if (ft_info->otf == invalid_otf)
}
}
if (cap->features[MFONT_OTT_GSUB].nfeatures
- && cap->features[MFONT_OTT_GSUB].tags[0]
&& (OTF_check_features
(ft_info->otf, 1,
cap->script_tag, cap->langsys_tag,
cap->features[MFONT_OTT_GSUB].nfeatures) != 1))
return -1;
if (cap->features[MFONT_OTT_GPOS].nfeatures
- && cap->features[MFONT_OTT_GPOS].tags[0]
&& (OTF_check_features
(ft_info->otf, 0,
cap->script_tag, cap->langsys_tag,
family = msymbol (buf);
if (msymbol_get (family, Mgeneric_family))
continue;
- plist = MPLIST_PLIST (ft_list_family (family, 0));
+ plist = MPLIST_PLIST (ft_list_family (family, 0, 1));
MPLIST_DO (plist, plist)
mplist_add (ft_default_list, family, MPLIST_VAL (plist));
}
{
MPlist *plist, *pl;
- MPLIST_DO (plist, ft_list_family (Mnil, 0))
+ MPLIST_DO (plist, ft_list_family (Mnil, 0, 1))
{
pl = MPLIST_PLIST (plist);
if (! MPLIST_TAIL_P (pl))
{
for (pl = plist; ! MPLIST_TAIL_P (pl);)
{
- if (ft_check_otf (MPLIST_VAL (pl), cap, NULL) < 0)
+ if (ft_check_cap_otf (MPLIST_VAL (pl), cap, NULL) < 0)
mplist_pop (pl);
else
pl = MPLIST_NEXT (pl);
STRDUP_LOWER (buf, bufsize, fam);
family = msymbol (buf);
- pl = ft_list_family (family, 0);
+ pl = ft_list_family (family, 0, 1);
MPLIST_DO (pl, MPLIST_PLIST (pl))
{
MFontFT *ft_info = MPLIST_VAL (pl);
{
MPlist *pl, *p;
- MPLIST_DO (pl, ft_list_family (Mnil, 0))
+ MPLIST_DO (pl, ft_list_family (Mnil, 0, 1))
{
MPLIST_DO (p, MPLIST_PLIST (pl))
{
MSymbol family = FONT_PROPERTY (font, MFONT_FAMILY);
if (family)
- plist = MPLIST_PLIST (ft_list_family (family, 1));
+ plist = MPLIST_PLIST (ft_list_family (family, 1, 1));
else
plist = ft_list_default ();
if (MPLIST_TAIL_P (plist))
for (pl = plist; ! MPLIST_TAIL_P (pl);)
{
- if (cap->script_tag && ft_check_otf (MPLIST_VAL (pl), cap, NULL) < 0)
+ if (cap->script_tag && ft_check_cap_otf (MPLIST_VAL (pl), cap, NULL) < 0)
{
mplist_pop (pl);
continue;
ft_rfont->ft_face = ft_face;
ft_rfont->charmap_list = charmap_list;
MSTRUCT_CALLOC (rfont, MERROR_FONT_FT);
+ rfont->id = ft_info->font.file;
rfont->spec = *font;
rfont->spec.type = MFONT_TYPE_REALIZED;
rfont->spec.property[MFONT_REGISTRY] = reg;
rfont->driver = &mfont__ft_driver;
rfont->info = ft_rfont;
rfont->fontp = ft_face;
- rfont->ascent = ft_face->size->metrics.ascender >> 6;
- rfont->descent = - ft_face->size->metrics.descender >> 6;
- rfont->max_advance = ft_face->size->metrics.max_advance >> 6;
+ rfont->ascent = ft_face->size->metrics.ascender;
+ rfont->descent = - ft_face->size->metrics.descender;
+ rfont->max_advance = ft_face->size->metrics.max_advance;
rfont->baseline_offset = 0;
+ rfont->x_ppem = ft_face->size->metrics.x_ppem;
+ rfont->y_ppem = ft_face->size->metrics.y_ppem;
#ifdef HAVE_FTBDF_H
{
BDF_PropertyRec prop;
if (! FT_IS_SCALABLE (ft_face)
&& FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &prop) == 0)
{
- rfont->baseline_offset = prop.u.integer;
- rfont->ascent += prop.u.integer;
- rfont->descent -= prop.u.integer;
+ rfont->baseline_offset = prop.u.integer << 6;
+ rfont->ascent += prop.u.integer << 6;
+ rfont->descent -= prop.u.integer << 6;
}
}
#endif /* HAVE_FTBDF_H */
if (FT_IS_SCALABLE (ft_face))
rfont->average_width = 0;
else
- rfont->average_width = ft_face->available_sizes->width;
+ rfont->average_width = ft_face->available_sizes->width << 6;
rfont->next = MPLIST_VAL (frame->realized_font_list);
MPLIST_VAL (frame->realized_font_list) = rfont;
MDEBUG_PRINT (" ok\n");
for (; g != gend; g++)
{
- if (g->code == MCHAR_INVALID_CODE)
+ if (g->g.measured)
+ continue;
+ if (g->g.code == MCHAR_INVALID_CODE)
{
if (FT_IS_SCALABLE (ft_face))
{
- unsigned unitsPerEm10 = ft_face->units_per_EM * 10;
- int size = rfont->spec.size;
-
- g->lbearing = 0;
- g->rbearing = ft_face->max_advance_width * size / unitsPerEm10;
- g->width = g->rbearing;
- g->ascent = ft_face->ascender * size / unitsPerEm10;
- g->descent = (- ft_face->descender) * size / unitsPerEm10;
+ g->g.lbearing = 0;
+ g->g.rbearing = ft_face->size->metrics.max_advance;
+ g->g.xadv = g->g.rbearing;
+ g->g.ascent = ft_face->size->metrics.ascender;
+ g->g.descent = - ft_face->size->metrics.descender;
}
else
{
BDF_PropertyRec prop;
#endif /* HAVE_FTBDF_H */
- g->lbearing = 0;
- g->rbearing = g->width = ft_face->available_sizes->width;
+ g->g.lbearing = 0;
+ g->g.rbearing = g->g.xadv = ft_face->available_sizes->width << 6;
#ifdef HAVE_FTBDF_H
if (FT_Get_BDF_Property (ft_face, "ASCENT", &prop) == 0)
{
- g->ascent = prop.u.integer;
+ g->g.ascent = prop.u.integer << 6;
FT_Get_BDF_Property (ft_face, "DESCENT", &prop);
- g->descent = prop.u.integer;
+ g->g.descent = prop.u.integer << 6;
if (FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET",
& prop) == 0)
{
- g->ascent += prop.u.integer;
- g->descent -= prop.u.integer;
+ g->g.ascent += prop.u.integer << 6;
+ g->g.descent -= prop.u.integer << 6;
}
}
else
#endif /* HAVE_FTBDF_H */
{
- g->ascent = ft_face->available_sizes->height;
- g->descent = 0;
+ g->g.ascent = ft_face->available_sizes->height << 6;
+ g->g.descent = 0;
}
}
}
{
FT_Glyph_Metrics *metrics;
- FT_Load_Glyph (ft_face, (FT_UInt) g->code, FT_LOAD_DEFAULT);
+ FT_Load_Glyph (ft_face, (FT_UInt) g->g.code, FT_LOAD_DEFAULT);
metrics = &ft_face->glyph->metrics;
- g->lbearing = (metrics->horiBearingX >> 6);
- g->rbearing = (metrics->horiBearingX + metrics->width) >> 6;
- g->width = metrics->horiAdvance >> 6;
- g->ascent = metrics->horiBearingY >> 6;
- g->descent = (metrics->height - metrics->horiBearingY) >> 6;
+ g->g.lbearing = metrics->horiBearingX;
+ g->g.rbearing = metrics->horiBearingX + metrics->width;
+ g->g.xadv = metrics->horiAdvance;
+ g->g.ascent = metrics->horiBearingY;
+ g->g.descent = metrics->height - metrics->horiBearingY;
}
- g->ascent += rfont->baseline_offset;
- g->descent -= rfont->baseline_offset;
+ g->g.yadv = 0;
+ g->g.ascent += rfont->baseline_offset;
+ g->g.descent -= rfont->baseline_offset;
+ g->g.measured = 1;
}
}
int i, j;
MPointTable point_table[8];
int baseline_offset;
+ int pixel_mode = -1;
if (from == to)
return;
/* It is assured that the all glyphs in the current range use the
same realized face. */
ft_face = rface->rfont->fontp;
- baseline_offset = rface->rfont->baseline_offset;
+ baseline_offset = rface->rfont->baseline_offset >> 6;
if (! gstring->anti_alias)
{
for (i = 0; i < 8; i++)
point_table[i].p = point_table[i].points;
- for (g = from; g < to; x += g++->width)
+ for (g = from; g < to; x += g++->g.xadv)
{
unsigned char *bmp;
int intensity;
int xoff, yoff;
int width, pitch;
- FT_Load_Glyph (ft_face, (FT_UInt) g->code, load_flags);
- yoff = y - ft_face->glyph->bitmap_top + g->yoff;
+ FT_Load_Glyph (ft_face, (FT_UInt) g->g.code, load_flags);
+ if (pixel_mode < 0)
+ pixel_mode = ft_face->glyph->bitmap.pixel_mode;
+ yoff = y - ft_face->glyph->bitmap_top + g->g.yoff;
bmp = ft_face->glyph->bitmap.buffer;
width = ft_face->glyph->bitmap.width;
pitch = ft_face->glyph->bitmap.pitch;
- if (! gstring->anti_alias)
- pitch *= 8;
- if (width > pitch)
- width = pitch;
- if (gstring->anti_alias)
+ if (pixel_mode != FT_PIXEL_MODE_MONO)
for (i = 0; i < ft_face->glyph->bitmap.rows;
i++, bmp += ft_face->glyph->bitmap.pitch, yoff++)
{
- xoff = x + ft_face->glyph->bitmap_left + g->xoff;
+ xoff = x + ft_face->glyph->bitmap_left + g->g.xoff;
for (j = 0; j < width; j++, xoff++)
{
intensity = bmp[j] >> 5;
for (i = 0; i < ft_face->glyph->bitmap.rows;
i++, bmp += ft_face->glyph->bitmap.pitch, yoff++)
{
- xoff = x + ft_face->glyph->bitmap_left + g->xoff;
+ xoff = x + ft_face->glyph->bitmap_left + g->g.xoff;
for (j = 0; j < width; j++, xoff++)
{
intensity = bmp[j / 8] & (1 << (7 - (j % 8)));
}
}
- if (gstring->anti_alias)
+ if (pixel_mode != FT_PIXEL_MODE_MONO)
{
for (i = 1; i < 8; i++)
if (point_table[i].p != point_table[i].points)
goto done;
family = FONT_PROPERTY (font, MFONT_FAMILY);
if (family != Mnil
- && (family_list = MPLIST_PLIST (ft_list_family (family, 1)))
+ && (family_list = MPLIST_PLIST (ft_list_family (family, 1, 1)))
&& MPLIST_TAIL_P (family_list))
goto done;
if (font->capability != Mnil)
{
/* No restriction. Get all fonts. */
pl = mplist ();
- MPLIST_DO (family_list, ft_list_family (Mnil, 0))
+ MPLIST_DO (family_list, ft_list_family (Mnil, 0, 1))
{
MPLIST_DO (p, MPLIST_PLIST (family_list))
mplist_push (pl, MPLIST_KEY (p), MPLIST_VAL (p));
MRealizedFontFT *ft_rfont = rfont->info;
MFontCapability *cap = mfont__get_capability (capability);
- if (cap->script != Mnil
- && ft_check_script (ft_info, cap->script, ft_rfont->ft_face) < 0)
+ if (cap->script_tag)
+ {
+ if (ft_check_cap_otf (ft_info, cap, ft_rfont->ft_face) < 0)
+ return -1;
+ }
+ else if (cap->script != Mnil
+ && ft_check_script (ft_info, cap->script, ft_rfont->ft_face) < 0)
return -1;
if (cap->language != Mnil
&& ft_check_language (ft_info, cap->language, ft_rfont->ft_face) < 0)
return -1;
- if (cap->script_tag && ft_check_otf (ft_info, cap, ft_rfont->ft_face) < 0)
- return -1;
return 0;
}
MDEBUG_DUMP (" [FONT-FT] encapsulating ", (char *) ft_face->family_name,);
MSTRUCT_CALLOC (rfont, MERROR_FONT_FT);
+ rfont->id = ft_info->font.file;
rfont->font = (MFont *) ft_info;
rfont->info = ft_rfont;
rfont->fontp = ft_face;
rfont->descent = - ft_face->size->metrics.descender >> 6;
rfont->max_advance = ft_face->size->metrics.max_advance >> 6;
rfont->baseline_offset = 0;
+ rfont->x_ppem = ft_face->size->metrics.x_ppem;
+ rfont->y_ppem = ft_face->size->metrics.y_ppem;
#ifdef HAVE_FTBDF_H
{
BDF_PropertyRec prop;
if (! FT_IS_SCALABLE (ft_face)
&& FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &prop) == 0)
{
- rfont->baseline_offset = prop.u.integer;
- rfont->ascent += prop.u.integer;
- rfont->descent -= prop.u.integer;
+ rfont->baseline_offset = prop.u.integer << 6;
+ rfont->ascent += prop.u.integer << 6;
+ rfont->descent -= prop.u.integer << 6;
}
}
#endif /* HAVE_FTBDF_H */
if (FT_IS_SCALABLE (ft_face))
rfont->average_width = 0;
else
- rfont->average_width = ft_face->available_sizes->width;
+ rfont->average_width = ft_face->available_sizes->width << 6;
rfont->next = MPLIST_VAL (frame->realized_font_list);
MPLIST_VAL (frame->realized_font_list) = rfont;
free (rfont);
}
+static OTF *
+get_otf (MFLTFont *font, FT_Face *ft_face)
+{
+ MRealizedFont *rfont = ((MFLTFontForRealized *) font)->rfont;
+ MFontFT *ft_info = (MFontFT *) rfont->font;
+ MRealizedFontFT *ft_rfont = rfont->info;
+ OTF *otf = ft_info->otf;
+
+ if (! otf)
+ {
+#if (LIBOTF_MAJOR_VERSION > 0 || LIBOTF_MINOR_VERSION > 9 || LIBOTF_RELEASE_NUMBER > 4)
+ otf = OTF_open_ft_face (ft_rfont->ft_face);
+#else
+ otf = OTF_open (MSYMBOL_NAME (ft_info->font.file));
+#endif
+ if (! otf || OTF_get_table (otf, "head") < 0)
+ otf = invalid_otf;
+ ft_info->otf = otf;
+ }
+ if (ft_face)
+ *ft_face = ft_rfont->ft_face;
+ return (otf == invalid_otf ? NULL : otf);
+}
+
+static int
+ft_check_otf (MFLTFont *font, MFLTOtfSpec *spec)
+{
+#ifdef HAVE_OTF
+ OTF_Tag *tags;
+ int i, n, negative;
+ OTF *otf = get_otf (font, NULL);
+
+ if (! otf)
+ goto not_otf;
+ for (i = 0; i < 2; i++)
+ {
+ if (! spec->features[i])
+ continue;
+ for (n = 0; spec->features[i][n]; n++);
+ tags = alloca (sizeof (OTF_Tag) * n);
+ for (n = 0, negative = 0; spec->features[i][n]; n++)
+ {
+ if (spec->features[i][n] == 0xFFFFFFFF)
+ negative = 1;
+ else if (negative)
+ tags[n - 1] = spec->features[i][n] | 0x80000000;
+ else
+ tags[n] = spec->features[i][n];
+ }
+ if (n - negative > 0
+ && OTF_check_features (otf, i == 0, spec->script, spec->langsys,
+ tags, n - negative) != 1)
+ return 0;
+ }
+ return 1;
+#endif /* HAVE_OTF */
+ not_otf:
+ return ((! spec->features[0] || spec->features[0][0] == 0xFFFFFFFF)
+ && (! spec->features[1] || spec->features[1][0] == 0xFFFFFFFF));
+}
+
+#ifdef HAVE_OTF
+
+#define DEVICE_DELTA(table, size) \
+ (((size) >= (table).StartSize && (size) <= (table).EndSize) \
+ ? (table).DeltaValue[(size) - (table).StartSize] << 6 \
+ : 0)
+
+void
+adjust_anchor (OTF_Anchor *anchor, FT_Face ft_face,
+ unsigned code, int x_ppem, int y_ppem, int *x, int *y)
+{
+ if (anchor->AnchorFormat == 2)
+ {
+ FT_Outline *outline;
+ int ap = anchor->f.f1.AnchorPoint;
+
+ FT_Load_Glyph (ft_face, (FT_UInt) code, FT_LOAD_MONOCHROME);
+ outline = &ft_face->glyph->outline;
+ if (ap < outline->n_points)
+ {
+ *x = outline->points[ap].x << 6;
+ *y = outline->points[ap].y << 6;
+ }
+ }
+ else if (anchor->AnchorFormat == 3)
+ {
+ if (anchor->f.f2.XDeviceTable.offset)
+ *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, x_ppem);
+ if (anchor->f.f2.YDeviceTable.offset)
+ *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, y_ppem);
+ }
+}
+#endif /* HAVE_OTF */
+
+static int
+ft_drive_otf (MFLTFont *font, MFLTOtfSpec *spec,
+ MFLTGlyphString *in, int from, int to,
+ MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
+{
+ int len = to - from;
+ int i, j, gidx;
+#ifdef HAVE_OTF
+ MGlyph *in_glyphs = (MGlyph *) (in->glyphs);
+ MGlyph *out_glyphs = out ? (MGlyph *) (out->glyphs) : NULL;
+ OTF *otf;
+ FT_Face face;
+ OTF_GlyphString otf_gstring;
+ OTF_Glyph *otfg;
+ char script[5], *langsys = NULL;
+ char *gsub_features = NULL, *gpos_features = NULL;
+ unsigned int tag;
+
+ if (len == 0)
+ return from;
+ otf = get_otf (font, &face);
+ if (! otf)
+ goto simple_copy;
+ 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])
+ {
+ 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';
+ }
+ }
+
+ otf_gstring.size = otf_gstring.used = len;
+ otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len);
+ memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
+ for (i = 0; i < len; i++)
+ {
+ otf_gstring.glyphs[i].c = ((MGlyph *)in->glyphs)[from + i].g.c & 0x11FFFF;
+ otf_gstring.glyphs[i].glyph_id = ((MGlyph *)in->glyphs)[from + i].g.code;
+ }
+
+ OTF_drive_gdef (otf, &otf_gstring);
+ gidx = out ? out->used : from;
+
+ if (gsub_features)
+ {
+ OTF_Feature *features;
+ MGlyph *g;
+
+ if (OTF_drive_gsub_with_log (otf, &otf_gstring, script, langsys,
+ gsub_features) < 0)
+ goto simple_copy;
+ features = otf->gsub->FeatureList.Feature;
+ if (out)
+ {
+ if (out->allocated < gidx + otf_gstring.used)
+ return -2;
+ for (i = 0, otfg = otf_gstring.glyphs, g = out_glyphs + gidx;
+ i < otf_gstring.used; i++, otfg++, g++, out->used++)
+ {
+ int feature_idx = otfg->positioning_type >> 4;
+ int j;
+ int min_from, max_to;
+
+ *g = in_glyphs[from + otfg->f.index.from];
+ min_from = g->g.from, max_to = g->g.to;
+ g->g.c = 0;
+ for (j = otfg->f.index.from; j <= otfg->f.index.to; j++)
+ if (in_glyphs[from + j].g.code == otfg->glyph_id)
+ {
+ g->g.c = in_glyphs[from + j].g.c;
+ break;
+ }
+ if (feature_idx)
+ {
+ tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ g->g.internal = (g->g.internal & ~0x1FFFFFFF) | tag;
+ }
+ for (j = otfg->f.index.from + 1; j <= otfg->f.index.to; j++)
+ {
+ if (min_from > in_glyphs[from + j].g.from)
+ min_from = in_glyphs[from + j].g.from;
+ if (max_to < in_glyphs[from + j].g.to)
+ max_to = in_glyphs[from + j].g.to;
+ }
+ if (g->g.code != otfg->glyph_id)
+ {
+ g->g.code = otfg->glyph_id;
+ g->g.measured = 0;
+ }
+ g->g.from = min_from, g->g.to = max_to;
+ }
+ }
+ else
+ {
+ for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used;
+ i++, otfg++)
+ {
+ int feature_idx = otfg->positioning_type >> 4;
+
+ if (feature_idx)
+ {
+ tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ for (j = otfg->f.index.from; j <= otfg->f.index.to; j++)
+ {
+ g = in_glyphs + (from + j);
+ g->g.internal = (g->g.internal & ~0x1FFFFFFF) | tag;
+ }
+ }
+ }
+ }
+ }
+ else if (out)
+ {
+ if (out->allocated < gidx + len)
+ return -2;
+ for (i = 0; i < len; i++)
+ out_glyphs[out->used++] = in_glyphs[from + i];
+ }
+
+ if (gpos_features)
+ {
+ OTF_Feature *features;
+ MGlyph *g;
+
+ if (OTF_drive_gpos_with_log (otf, &otf_gstring, script, langsys,
+ gpos_features) < 0)
+ return to;
+ features = otf->gpos->FeatureList.Feature;
+ if (out)
+ {
+ MGlyph *base = NULL, *mark = NULL;
+ int x_ppem = face->size->metrics.x_ppem;
+ int y_ppem = face->size->metrics.y_ppem;
+ int x_scale = face->size->metrics.x_scale;
+ int y_scale = face->size->metrics.y_scale;
+
+ for (i = j = 0, otfg = otf_gstring.glyphs, g = out_glyphs + gidx;
+ i < otf_gstring.used; i++, otfg++)
+ {
+ MGlyph *prev;
+ int adjust_idx = otfg->glyph_id ? j : j - 1;
+ int feature_idx = otfg->positioning_type >> 4;
+
+ if (feature_idx)
+ {
+ tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ g->g.internal = (g->g.internal & ~0x1FFFFFFF) | tag;
+ }
+ 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[adjust_idx].xoff
+ += otfg->f.f1.value->XPlacement * x_scale / 0x10000;
+ if (format & OTF_XPlaDevice)
+ adjustment[adjust_idx].xoff
+ += DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, x_ppem);
+ if (format & OTF_YPlacement)
+ adjustment[adjust_idx].yoff
+ -= otfg->f.f1.value->YPlacement * y_scale / 0x10000;
+ if (format & OTF_YPlaDevice)
+ adjustment[adjust_idx].yoff
+ -= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, y_ppem);
+ if (format & OTF_XAdvance)
+ adjustment[adjust_idx].xadv
+ += otfg->f.f1.value->XAdvance * x_scale / 0x10000;
+ if (format & OTF_XAdvDevice)
+ adjustment[adjust_idx].xadv
+ += DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, x_ppem);
+ if (format & OTF_YAdvance)
+ adjustment[adjust_idx].yadv
+ += otfg->f.f1.value->YAdvance * y_scale / 0x10000;
+ if (format & OTF_YAdvDevice)
+ adjustment[adjust_idx].yadv
+ += DEVICE_DELTA (otfg->f.f1.value->YAdvDevice, y_ppem);
+ adjustment[adjust_idx].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;
+ int k;
+
+ 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 (otfg->f.f4.base_anchor, face, prev->g.code,
+ x_ppem, y_ppem, &base_x, &base_y);
+ if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
+ adjust_anchor (otfg->f.f4.mark_anchor, face, g->g.code,
+ x_ppem, y_ppem, &mark_x, &mark_y);
+ adjustment[adjust_idx].xoff = base_x - mark_x;
+ adjustment[adjust_idx].yoff = - (base_y - mark_y);
+ adjustment[adjust_idx].back = (g - prev);
+ adjustment[adjust_idx].xadv = 0;
+ adjustment[adjust_idx].advance_is_absolute = 1;
+ adjustment[adjust_idx].set = 1;
+ this_from = g->g.from;
+ this_to = g->g.to;
+ for (k = 0; prev + k < g; k++)
+ {
+ if (this_from > prev[k].g.from)
+ this_from = prev[k].g.from;
+ if (this_to < prev[k].g.to)
+ this_to = prev[k].g.to;
+ }
+ for (; prev <= g; prev++)
+ {
+ prev->g.from = this_from;
+ prev->g.to = this_to;
+ }
+ }
+ }
+ if (otfg->glyph_id)
+ {
+ if (otfg->GlyphClass == OTF_GlyphClass0)
+ base = mark = g;
+ else if (otfg->GlyphClass == OTF_GlyphClassMark)
+ mark = g;
+ else
+ base = g;
+ j++, g++;
+ }
+ }
+ }
+ else
+ {
+ 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)
+ {
+ tag = features[feature_idx - 1].FeatureTag;
+ tag = PACK_OTF_TAG (tag);
+ for (j = otfg->f.index.from; j <= otfg->f.index.to; j++)
+ {
+ g = in_glyphs + (from + j);
+ g->g.internal = (g->g.internal & ~0x1FFFFFFF) | tag;
+ }
+ }
+ }
+ }
+ }
+
+ free (otf_gstring.glyphs);
+ return to;
+
+ simple_copy:
+ if (otf_gstring.glyphs)
+ free (otf_gstring.glyphs);
+#endif /* HAVE_OTF */
+ if (out)
+ {
+ if (out->allocated < out->used + len)
+ return -2;
+ font->get_metrics (font, in, from, to);
+ memcpy ((MGlyph *)out->glyphs + out->used, (MGlyph *) in->glyphs + from,
+ sizeof (MGlyph) * len);
+ out->used += len;
+ }
+ return to;
+}
+
+static int
+ft_try_otf (MFLTFont *font, MFLTOtfSpec *spec,
+ MFLTGlyphString *in, int from, int to)
+{
+ return ft_drive_otf (font, spec, in, from, to, NULL, NULL);
+}
+
+
+#ifdef HAVE_OTF
+static unsigned char *iterate_bitmap;
+
+static int
+iterate_callback (OTF *otf, const char *feature, unsigned glyph_id)
+{
+ if (glyph_id <= otf->cmap->max_glyph_id)
+ iterate_bitmap[glyph_id / 8] |= 1 << (glyph_id % 8);
+ return 0;
+}
+
+static int
+ft_iterate_otf_feature (MFLTFont *font, MFLTOtfSpec *spec,
+ int from, int to, unsigned char *table)
+{
+ OTF *otf = get_otf (font, NULL);
+ char id[13];
+ int bmp_size;
+ unsigned char *bitmap = NULL;
+ int i, j;
+ char script[5], *langsys = NULL;
+
+ if (! otf)
+ return -1;
+ if (OTF_get_table (otf, "cmap") < 0)
+ return -1;
+ if (! spec->features[0])
+ return -1;
+ strcpy (id, "feature-");
+ id[12] = '\0';
+ OTF_tag_name (spec->script, script);
+ if (spec->langsys)
+ {
+ langsys = alloca (5);
+ OTF_tag_name (spec->langsys, langsys);
+ }
+ bmp_size = (otf->cmap->max_glyph_id / 8) + 1;
+ for (i = 0; spec->features[0][i]; i++)
+ {
+ unsigned char *bmp;
+
+ OTF_tag_name (spec->features[0][i], id + 8);
+ bmp = OTF_get_data (otf, id);
+ if (! bmp)
+ {
+ iterate_bitmap = bmp = calloc (bmp_size, 1);
+ OTF_iterate_gsub_feature (otf, iterate_callback,
+ script, langsys, id + 8);
+ OTF_put_data (otf, id, bmp, free);
+ }
+ if (i == 0 && ! spec->features[0][1])
+ /* Single feature */
+ bitmap = bmp;
+ else
+ {
+ if (! bitmap)
+ {
+ bitmap = alloca (bmp_size);
+ memcpy (bitmap, bmp, bmp_size);
+ }
+ else
+ {
+ int j;
+
+ for (j = 0; j < bmp_size; j++)
+ bitmap[j] &= bmp[j];
+ }
+ }
+ }
+ for (i = 0; i < bmp_size; i++)
+ if (bitmap[i])
+ {
+ for (j = 0; j < 8; j++)
+ if (bitmap[i] & (1 << j))
+ {
+ int c = OTF_get_unicode (otf, (i * 8) + j);
+
+ if (c >= from && c <= to)
+ table[c - from] = 1;
+ }
+ }
+ return 0;
+}
+#endif
+
\f
/* Internal API */
MFontDriver mfont__ft_driver =
{ ft_select, ft_open, ft_find_metric, ft_has_char, ft_encode_char,
ft_render, ft_list, ft_list_family_names, ft_check_capability,
- ft_encapsulate, ft_close };
+ ft_encapsulate, ft_close, ft_check_otf, ft_drive_otf, ft_try_otf,
+#ifdef HAVE_OTF
+ ft_iterate_otf_feature
+#endif /* HAVE_OTF */
+ };
int
mfont__ft_init ()
msymbol_put (monospace, Mgeneric_family, monospace);
msymbol_put (msymbol ("mono"), Mgeneric_family, monospace);
}
-#endif
+#endif /* HAVE_FONTCONFIG */
return 0;
}
}
#endif /* HAVE_FONTCONFIG */
-\f
-#ifdef HAVE_OTF
-
-#define DEVICE_DELTA(table, size) \
- (((size) >= (table).StartSize && (size) <= (table).EndSize) \
- ? (table).DeltaValue[(size) - (table).StartSize] \
- : 0)
-
-void
-adjust_anchor (OTF_Anchor *anchor, FT_Face ft_face,
- unsigned code, int size, int *x, int *y)
-{
- if (anchor->AnchorFormat == 2)
- {
- FT_Outline *outline;
- int ap = anchor->f.f1.AnchorPoint;
-
- FT_Load_Glyph (ft_face, (FT_UInt) code, FT_LOAD_MONOCHROME);
- outline = &ft_face->glyph->outline;
- if (ap < outline->n_points)
- {
- *x = outline->points[ap].x;
- *y = outline->points[ap].y;
- }
- }
- else if (anchor->AnchorFormat == 3)
- {
- if (anchor->f.f2.XDeviceTable.offset)
- *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, size);
- if (anchor->f.f2.YDeviceTable.offset)
- *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, size);
- }
-}
-
-int
-mfont__ft_drive_otf (MGlyphString *gstring, int from, int to,
- MFontCapability *cap)
-{
- int len = to - from;
- MGlyph *g = MGLYPH (from);
- int i, gidx;
- MRealizedFont *rfont;
- MFontFT *ft_info;
- OTF *otf;
- OTF_GlyphString otf_gstring;
- OTF_Glyph *otfg;
- char *script, *langsys;
- char *gsub_features, *gpos_features;
- int need_cmap;
-
- if (len == 0)
- return from;
-
- otf_gstring.glyphs = NULL;
- rfont = g->rface->rfont;
- ft_info = (MFontFT *) rfont->font;
- if (ft_info->otf == invalid_otf)
- goto simple_copy;
- otf = ft_info->otf;
- if (! otf)
- {
- MRealizedFontFT *ft_rfont = rfont->info;
-
-#if (LIBOTF_MAJOR_VERSION > 0 || LIBOTF_MINOR_VERSION > 9 || LIBOTF_RELEASE_NUMBER > 4)
- otf = OTF_open_ft_face (ft_rfont->ft_face);
-#else
- otf = OTF_open (MSYMBOL_NAME (ft_info->font.file));
-#endif
- if (! otf)
- {
- ft_info->otf = invalid_otf;
- goto simple_copy;
- }
- ft_info->otf = otf;
- }
- if (OTF_get_table (otf, "head") < 0)
- {
- OTF_close (otf);
- ft_info->otf = invalid_otf;
- goto simple_copy;
- }
-
- if (cap->script_tag)
- {
- script = alloca (5);
- OTF_tag_name (cap->script_tag, script);
- }
- else
- script = NULL;
- if (cap->langsys_tag)
- {
- langsys = alloca (5);
- OTF_tag_name (cap->langsys_tag, langsys);
- }
- else
- langsys = NULL;
- gsub_features = cap->features[MFONT_OTT_GSUB].str;
- if (gsub_features && OTF_check_table (otf, "GSUB") < 0)
- gsub_features = NULL;
- gpos_features = cap->features[MFONT_OTT_GPOS].str;
- if (gpos_features && OTF_check_table (otf, "GPOS") < 0)
- gpos_features = NULL;
-
- otf_gstring.size = otf_gstring.used = len;
- otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len);
- memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
- for (i = 0, need_cmap = 0; i < len; i++)
- {
- if (gstring->glyphs[from + i].otf_encoded)
- {
- otf_gstring.glyphs[i].c = gstring->glyphs[from + i].c;
- otf_gstring.glyphs[i].glyph_id = gstring->glyphs[from + i].code;
- }
- else
- {
- otf_gstring.glyphs[i].c = gstring->glyphs[from + i].code;
- need_cmap++;
- }
- }
- if (need_cmap
- && OTF_drive_cmap (otf, &otf_gstring) < 0)
- goto simple_copy;
-
- OTF_drive_gdef (otf, &otf_gstring);
- gidx = gstring->used;
-
- if (gsub_features)
- {
- if (OTF_drive_gsub (otf, &otf_gstring, script, langsys, gsub_features)
- < 0)
- goto simple_copy;
- for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; i++, otfg++)
- {
- MGlyph temp = *(MGLYPH (from + otfg->f.index.from));
-
- temp.c = otfg->c;
- temp.combining_code = 0;
- if (otfg->glyph_id)
- {
- temp.code = otfg->glyph_id;
- temp.otf_encoded = 1;
- }
- else
- {
- temp.code = temp.c;
- temp.otf_encoded = 0;
- }
- temp.to = MGLYPH (from + otfg->f.index.to)->to;
- MLIST_APPEND1 (gstring, glyphs, temp, MERROR_FONT_OTF);
- }
- }
- else
- for (i = 0; i < len; i++)
- {
- MGlyph temp = gstring->glyphs[from + i];
-
- if (otf_gstring.glyphs[i].glyph_id)
- {
- temp.code = otf_gstring.glyphs[i].glyph_id;
- temp.otf_encoded = 1;
- }
- MLIST_APPEND1 (gstring, glyphs, temp, MERROR_FONT_OTF);
- }
-
- (rfont->driver->find_metric) (rfont, gstring, gidx, gstring->used);
-
- if (gpos_features)
- {
- int u;
- int size10, size;
- MGlyph *base = NULL, *mark = NULL;
-
- if (OTF_check_features (otf, 1,
- cap->script_tag, cap->langsys_tag,
- cap->features[MFONT_OTT_GPOS].tags,
- cap->features[MFONT_OTT_GPOS].nfeatures) != 1
- || (OTF_drive_gpos (otf, &otf_gstring, script, langsys,
- gpos_features) < 0))
- return to;
-
- u = otf->head->unitsPerEm;
- size10 = rfont->spec.size;
- size = size10 / 10;
-
- for (i = 0, otfg = otf_gstring.glyphs, g = MGLYPH (gidx);
- i < otf_gstring.used; i++, otfg++, g++)
- {
- MGlyph *prev;
-
- if (! otfg->glyph_id)
- continue;
- switch (otfg->positioning_type)
- {
- case 0:
- break;
- case 1: case 2:
- {
- int format = otfg->f.f1.format;
-
- if (format & OTF_XPlacement)
- g->xoff = otfg->f.f1.value->XPlacement * size10 / u / 10;
- if (format & OTF_XPlaDevice)
- g->xoff += DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, size);
- if (format & OTF_YPlacement)
- g->yoff = - (otfg->f.f1.value->YPlacement * size10 / u / 10);
- if (format & OTF_YPlaDevice)
- g->yoff -= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, size);
- if (format & OTF_XAdvance)
- g->width += otfg->f.f1.value->XAdvance * size10 / u / 10;
- if (format & OTF_XAdvDevice)
- g->width += DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, size);
- }
- break;
- case 3:
- /* Not yet supported. */
- break;
- case 4: case 5:
- if (! base)
- break;
- prev = base;
- goto label_adjust_anchor;
- default: /* i.e. case 6 */
- if (! mark)
- break;
- prev = mark;
-
- label_adjust_anchor:
- {
- int base_x, base_y, mark_x, mark_y;
-
- base_x = otfg->f.f4.base_anchor->XCoordinate * size10 / u / 10;
- base_y = otfg->f.f4.base_anchor->YCoordinate * size10 / u / 10;
- mark_x = otfg->f.f4.mark_anchor->XCoordinate * size10 / u / 10;
- mark_y = otfg->f.f4.mark_anchor->YCoordinate * size10 / u / 10;
-
- if (otfg->f.f4.base_anchor->AnchorFormat != 1)
- adjust_anchor (otfg->f.f4.base_anchor, rfont->fontp,
- prev->code, size, &base_x, &base_y);
- if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
- adjust_anchor (otfg->f.f4.mark_anchor, rfont->fontp,
- g->code, size, &mark_x, &mark_y);
- g->xoff = prev->xoff + (base_x - prev->width) - mark_x;
- g->yoff = prev->yoff + mark_y - base_y;
- g->combining_code = MAKE_PRECOMPUTED_COMBINDING_CODE ();
- }
- }
- if (otfg->GlyphClass == OTF_GlyphClass0)
- base = mark = g;
- else if (otfg->GlyphClass == OTF_GlyphClassMark)
- mark = g;
- else
- base = g;
- }
- }
- free (otf_gstring.glyphs);
- return to;
-
- simple_copy:
- for (i = 0; i < len; i++)
- {
- MGlyph *g = MGLYPH (from + i);
-
- if (! g->otf_encoded)
- {
- g->code = rfont->driver->encode_char (gstring->frame, (MFont *) rfont,
- NULL, g->code);
- g->otf_encoded = 1;
- }
- }
-
- rfont->driver->find_metric (rfont, gstring, from, to);
- for (i = 0; i < len; i++)
- {
- MGlyph temp = gstring->glyphs[from + i];
- MLIST_APPEND1 (gstring, glyphs, temp, MERROR_FONT_OTF);
- }
- if (otf_gstring.glyphs)
- free (otf_gstring.glyphs);
- return to;
-}
-
-
-int
-mfont__ft_decode_otf (MGlyph *g)
-{
- MFontFT *ft_info = (MFontFT *) g->rface->rfont->font;
- int c = OTF_get_unicode (ft_info->otf, (OTF_GlyphID) g->code);
-
- return (c ? c : -1);
-}
-
-#endif /* HAVE_OTF */
-
#endif /* HAVE_FREETYPE */
projects / m17n / m17n-lib.git / blobdiff