#include <harfbuzz.h>
#define PROGNAME "flt-hb"
-#else (defined (FLT_PANGO))
+#else /* (defined (FLT_PANGO)) */
#include <m17n-flt.h>
-#include <pango/pango-engine.h>
+#define PANGO_ENABLE_ENGINE
+#define PANGO_ENABLE_BACKEND
+#include <pango/pango.h>
#include <pango/pango-ot.h>
-#include <pango/pango-utils.h>
-
+#include <pango/pangoft2.h>
+#include <pango/pangofc-font.h>
#endif
static FT_Library ft_library;
-FT_Face
-new_face (char *fontname, char **err)
+int
+parse_font_name (char *fontname, char **family, int *size, char **err)
{
FcPattern *pat;
- FcChar8 *fam, *file;
+ FcChar8 *fam;
double pixelsize;
- FcFontSet *fs;
- FcObjectSet *os;
- FT_Face face;
pat = FcNameParse ((FcChar8 *) fontname);
if (! pat)
{
*err = "invalid name format";
- return NULL;
+ return -1;
}
if (FcPatternGetString (pat, FC_FAMILY, 0, &fam) != FcResultMatch)
{
+ FcPatternDestroy (pat);
*err = "no family name";
- return NULL;
+ return -1;
}
if (FcPatternGetDouble (pat, FC_PIXEL_SIZE, 0, &pixelsize) != FcResultMatch)
pixelsize = 20;
- FcPatternAddBool (pat, FC_SCALABLE, FcTrue);
- FcPatternDel (pat, FC_PIXEL_SIZE);
+ *family = strdup ((char *) fam);
+ *size = pixelsize;
+ FcPatternDestroy (pat);
+ return 0;
+}
+
+FT_Face
+new_face (char *fontname, char **err)
+{
+ FcPattern *pat;
+ FcChar8 *fam, *file;
+ int size;
+ double pixelsize;
+ FcFontSet *fs;
+ FcObjectSet *os;
+ FT_Face face;
+
+ if (parse_font_name (fontname, (char **) &fam, &size, err) < 0)
+ return NULL;
+ pixelsize = size;
+ pat = FcPatternBuild (0,
+ FC_FAMILY, FcTypeString, fam,
+ FC_SCALABLE, FcTypeBool, FcTrue,
+ NULL);
+ free (fam);
os = FcObjectSetBuild (FC_FILE, NULL);
fs = FcFontList (NULL, pat, os);
if (fs->nfont == 0)
{
FontInfoHB *font_info = (FontInfoHB *) font;
int len = to - from;
- int i, gidx;
+ int i;
HB_Buffer buf;
GsubGposInfo *ginfo;
HB_UShort *apply_order_save;
gpos_applied = 1;
}
- gidx = out->used;
-
for (i = 0; i < buf->in_length; i++)
{
HB_GlyphItem hg = buf->in_string + i;
#else /* (defined (FLT_PANGO) */
typedef struct {
+ int count;
+ guint *indices;
+ PangoOTRuleset *ruleset;
+} FeatureInfo;
+
+typedef struct {
+ FeatureInfo gsub;
+ FeatureInfo gpos;
+} GsubGposInfo;
+
+typedef struct {
MFLTFont font;
- PangoFcFont pango_fc_font;
+ PangoFontMap *fontmap;
+ PangoContext *context;
+ PangoFcFont *pango_font;
+ MPlist *otf_spec_cache;
} FontInfoPango;
int
get_glyph_id (MFLTFont *font, MFLTGlyph *g)
{
FontInfoPango *font_info = (FontInfoPango *) font;
- PangoGlyph pg = pango_fc_font_get_glyph (font_info->pango_fc_font, g->c);
+ PangoGlyph glyph = pango_fc_font_get_glyph (font_info->pango_font, g->c);
- return (pg ? (int) pg : -1);
+ return (glyph ? (int) glyph : -1);
}
int
-get_metric (MFLTFont *font, MFLTGlyphString *gstring, int form, int to)
+get_metric (MFLTFont *font, MFLTGlyphString *gstring, int from, int to)
{
FontInfoPango *font_info = (FontInfoPango *) font;
- PangoFcFont fc_font = font_info->pango_fc_font;
int i;
for (i = from; i < to; i++)
{
+ MFLTGlyph *g = gstring->glyphs + from;
PangoRectangle inc, logical;
- pango_font_get_glyph_extents ((PangoFont *) fc_font,
+ pango_font_get_glyph_extents (PANGO_FONT (font_info->pango_font),
gstring->glyphs[i].code, &inc, &logical);
g->lbearing = inc.x;
g->rbearing = inc.x + inc.width;
}
}
+void
+setup_features (PangoOTTableType type, FontInfoPango *font_info,
+ MFLTOtfSpec *spec, FeatureInfo *info)
+{
+ int count, preordered;
+ unsigned int *features;
+ guint script, langsys;
+ guint req_feature, index;
+ guint *feature_list;
+ int i, j, k;
+ int err;
+ FT_Face face;
+ PangoOTInfo *ot_info;
+
+ face = pango_fc_font_lock_face (font_info->pango_font);
+ ot_info = pango_ot_info_get (face);
+ pango_fc_font_unlock_face (font_info->pango_font);
+
+ if (! pango_ot_info_find_script (ot_info, type, spec->script, &script))
+ return;
+ if (spec->langsys)
+ {
+ if (! pango_ot_info_find_language (ot_info, type, script,
+ spec->langsys,
+ &langsys, &req_feature))
+ return;
+ }
+ else
+ {
+ langsys = PANGO_OT_DEFAULT_LANGUAGE;
+ req_feature = 0xFFFF;
+ }
+ if (type == PANGO_OT_TABLE_GSUB)
+ {
+ count = spec->gsub_count;
+ features = spec->gsub;
+ }
+ else
+ {
+ count = spec->gpos_count;
+ features = spec->gpos;
+ }
+ feature_list = NULL;
+ for (preordered = 0; preordered < count; preordered++)
+ if (features[preordered] == 0)
+ {
+ feature_list = pango_ot_info_list_features (ot_info, type, 0,
+ script, langsys);
+ if (! feature_list)
+ return;
+ break;
+ }
+ if (feature_list)
+ for (i = 0; feature_list[i]; i++);
+ else
+ i = preordered;
+ info->indices = malloc (sizeof (guint) * ((req_feature != 0xFFFF) + i));
+ i = 0;
+ if (req_feature != 0xFFFF)
+ info->indices[i++] = req_feature;
+ for (j = 0; j < preordered; j++)
+ if (pango_ot_info_find_feature (ot_info, type, features[j],
+ script, langsys, &index))
+ info->indices[i++] = index;
+ if (feature_list)
+ for (j = 0; feature_list[j]; j++)
+ {
+ for (k = preordered + 1; k < count; k++)
+ if (feature_list[j] == features[k])
+ break;
+ if (k == count
+ && pango_ot_info_find_feature (ot_info, type, feature_list[j],
+ script, langsys, &index))
+ info->indices[i++] = index;
+ }
+ info->count = i;
+ info->ruleset = pango_ot_ruleset_new (ot_info);
+ for (i = 0; i < info->count; i++)
+ pango_ot_ruleset_add_feature (info->ruleset, type, info->indices[i],
+ PANGO_OT_ALL_GLYPHS);
+}
+
+GsubGposInfo *
+setup_otf_spec (FontInfoPango *font_info, MFLTOtfSpec *spec)
+{
+ GsubGposInfo *ginfo;
+
+ if (spec->gsub_count + spec->gpos_count == 0)
+ return NULL;
+ ginfo = mplist_get (font_info->otf_spec_cache, spec->sym);
+ if (ginfo)
+ return (ginfo->gsub.count + ginfo->gpos.count > 0 ? ginfo : NULL);
+ ginfo = calloc (1, sizeof (GsubGposInfo));
+ mplist_push (font_info->otf_spec_cache, spec->sym, ginfo);
+ setup_features (PANGO_OT_TABLE_GSUB, font_info, spec, &(ginfo->gsub));
+ setup_features (PANGO_OT_TABLE_GPOS, font_info, spec, &(ginfo->gpos));
+ return ginfo;
+}
+
+int
+drive_otf (MFLTFont *font, MFLTOtfSpec *spec,
+ MFLTGlyphString *in, int from, int to,
+ MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
+{
+ FontInfoPango *font_info = (FontInfoPango *) font;
+ PangoOTBuffer *buffer;
+ GsubGposInfo *ginfo;
+ PangoGlyphString *glyphs;
+ int i;
+
+ buffer = pango_ot_buffer_new (font_info->pango_font);
+ for (i = from; i < to; i++)
+ pango_ot_buffer_add_glyph (buffer, in->glyphs[i].code, 0, i);
+ ginfo = setup_otf_spec (font_info, spec);
+ if (! ginfo)
+ goto simple_copy;
+ if (ginfo->gsub.count > 0)
+ pango_ot_ruleset_substitute (ginfo->gsub.ruleset, buffer);
+ if (ginfo->gpos.count > 0)
+ pango_ot_ruleset_position (ginfo->gpos.ruleset, buffer);
+ glyphs = pango_glyph_string_new ();
+ pango_ot_buffer_output (buffer, glyphs);
+ for (i = 0; i < glyphs->num_glyphs; i++)
+ {
+ PangoGlyphInfo *glyph_info = glyphs->glyphs + i;
+ MFLTGlyph *g;
+
+ out->glyphs[out->used] = in->glyphs[glyphs->log_clusters[i]];
+ g = out->glyphs + out->used++;
+ if (g->code != glyph_info->glyph)
+ g->c = 0, g->code = glyph_info->glyph;
+ g->xoff = glyph_info->geometry.x_offset;
+ g->yoff = glyph_info->geometry.y_offset;
+ g->xadv = glyph_info->geometry.width;
+ g->yadv = 0;
+ adjustment[i].set = 0;
+ }
+ pango_ot_buffer_destroy (buffer);
+ pango_glyph_string_free (glyphs);
+ return to;
+
+ simple_copy:
+ pango_ot_buffer_destroy (buffer);
+ for (i = from; i < to; i++)
+ out->glyphs[out->used++] = in->glyphs[i];
+ return to;
+}
+
+
+MFLTFont *
+open_font (char *fontname, char **err)
+{
+ FontInfoPango *font_info = NULL;
+ PangoFontMap *fontmap;
+ PangoContext *context;
+ PangoFontDescription *desc;
+ PangoFont *pango_font;
+ char *family;
+ int size;
+ double pango_size;
+
+ if (parse_font_name (fontname, &family, &size, err) < 0)
+ return NULL;
+ desc = pango_font_description_new ();
+ pango_font_description_set_family (desc, family);
+ free (family);
+ pango_size = size * PANGO_SCALE;
+ pango_font_description_set_absolute_size (desc, pango_size);
+
+ fontmap = pango_ft2_font_map_new ();
+ context = pango_context_new ();
+ pango_context_set_font_map (context, fontmap);
+ pango_font = pango_context_load_font (context, desc);
+ pango_font_description_free (desc);
+ if (pango_font)
+ {
+ font_info = calloc (1, sizeof (FontInfoPango));
+ font_info->fontmap = fontmap;
+ font_info->context = context;
+ font_info->pango_font = PANGO_FC_FONT (pango_font);
+ }
+ else
+ {
+ g_object_unref (context);
+ g_object_unref (fontmap);
+ }
+ return (MFLTFont *) font_info;
+}
+
+void
+close_font (MFLTFont *font)
+{
+ FontInfoPango *font_info = (FontInfoPango *) font;
+
+ g_object_unref (font_info->context);
+ g_object_unref (font_info->fontmap);
+}
+
+int
+flt (MText *mt, int from, int to, MFLTFont *font, char *flt_name)
+{
+ MFLTGlyphString gstring;
+ int len = to - from;
+ int i;
+
+ memset (&gstring, 0, sizeof (MFLTGlyphString));
+ gstring.glyph_size = sizeof (MFLTGlyph);
+ gstring.allocated = len * 2;
+ gstring.glyphs = alloca (sizeof (MFLTGlyph) * gstring.allocated);
+ for (i = 0; i < len; i++)
+ gstring.glyphs[i].c = mtext_ref_char (mt, from + i);
+ gstring.used = len;
+ return mflt_run (&gstring, 0, len, font, msymbol (flt_name));
+}
+
#endif
int
projects / m17n / m17n-test.git / commitdiff