Boolean
TTFprocess(Font *fnt,
long Code,
byte **bitmap,
int *width, int *height,
int *hoff, int *voff,
Boolean hinting,
Boolean quiet)
{
int Num;
TT_Error error;
if (!bitmap || !width || !height || !hoff || !voff)
oops("Invalid parameter in call to TTFprocess()");
if (Code >= 0x1000000)
Num = Code & 0xFFFFFF;
else
{
Num = TT_Char_Index(char_map, Code);
if (has_gsub)
{
in_string[0] = Num;
error = TT_GSUB_Apply_String(gsub, &in, &out);
if (error && error != TTO_Err_Not_Covered)
warning("Cannot get the vertical glyph form for glyph index %d.",
Num);
else
Num = out.string[0];
}
}
if ((error = LoadTrueTypeChar(fnt, Num, hinting, quiet)) == TT_Err_Ok)
{
memset(Bit.bitmap, 0, Bit.size);
TT_Get_Glyph_Bitmap(glyph, &Bit, x_offset * 64, y_offset * 64);
FlipBit();
*bitmap = Bit2.bitmap;
*width = Bit2.width;
*height = Bit2.rows;
*hoff = x_offset;
*voff = y_offset;
/* *voff = Bit2.rows - y_offset; */
/* printf("%D %d\n", *hoff, *voff); */
/* Output(Bit2); */
return True;
}
else
return False;
}
/**
* pango_ot_ruleset_shape:
* @ruleset: a #PangoOTRuleset.
* @glyphs: a pointer to a #PangoGlyphString.
* @properties: an array containing one #gulong bitfield for each glyph,
* which gives the glyph's properties: If a certain bit is set for a glyph,
* the feature which has the same bit set in its property value is applied.
*
* Shapes a string of glyphs with the given properties according to @ruleset.
**/
void
pango_ot_ruleset_shape (PangoOTRuleset *ruleset,
PangoGlyphString *glyphs,
gulong *properties)
{
int i;
int last_cluster;
int result;
TTO_GSUB gsub = NULL;
TTO_GPOS gpos = NULL;
TTO_GSUB_String *in_string = NULL;
TTO_GSUB_String *out_string = NULL;
TTO_GSUB_String *result_string = NULL;
gboolean need_gsub = FALSE;
gboolean need_gpos = FALSE;
g_return_if_fail (PANGO_OT_IS_RULESET (ruleset));
for (i = 0; i < ruleset->rules->len; i++)
{
PangoOTRule *rule = &g_array_index (ruleset->rules, PangoOTRule, i);
if (rule->table_type == PANGO_OT_TABLE_GSUB)
need_gsub = TRUE;
else
need_gpos = TRUE;
}
if (need_gsub)
{
gsub = pango_ot_info_get_gsub (ruleset->info);
if (gsub)
TT_GSUB_Clear_Features (gsub);
}
if (need_gpos)
{
gpos = pango_ot_info_get_gpos (ruleset->info);
if (gpos)
TT_GPOS_Clear_Features (gpos);
}
for (i = 0; i < ruleset->rules->len; i++)
{
PangoOTRule *rule = &g_array_index (ruleset->rules, PangoOTRule, i);
if (rule->table_type == PANGO_OT_TABLE_GSUB)
{
if (gsub)
TT_GSUB_Add_Feature (gsub, rule->feature_index, rule->property_bit);
}
else
{
if (gpos)
TT_GPOS_Add_Feature (gpos, rule->feature_index, rule->property_bit);
}
}
if (!gsub && !gpos)
return;
result = TT_GSUB_String_New (ruleset->info->face->memory, &in_string);
g_assert (result == FT_Err_Ok);
result = TT_GSUB_String_Set_Length (in_string, glyphs->num_glyphs);
g_assert (result == FT_Err_Ok);
for (i = 0; i < glyphs->num_glyphs; i++)
{
in_string->string[i] = glyphs->glyphs[i].glyph;
in_string->properties[i] = properties[i];
in_string->logClusters[i] = glyphs->log_clusters[i];
}
in_string->max_ligID = i;
if (gsub)
{
result = TT_GSUB_String_New (ruleset->info->face->memory,
&out_string);
g_assert (result == FT_Err_Ok);
result_string = out_string;
TT_GSUB_Apply_String (gsub, in_string, out_string);
}
else
result_string = in_string;
if (gpos)
{
TTO_GPOS_Data *outgpos = NULL;
if (!TT_GPOS_Apply_String (ruleset->info->face, gpos, 0, result_string, &outgpos,
FALSE /* enable device-dependant values */,
FALSE /* Even though this might be r2l text, RTL is handled elsewhere */))
{
for (i = 0; i < result_string->length; i++)
{
FT_Pos x_pos = outgpos[i].x_pos;
FT_Pos y_pos = outgpos[i].y_pos;
int back = i;
int j;
while (outgpos[back].back != 0)
{
back -= outgpos[back].back;
x_pos += outgpos[back].x_pos;
y_pos += outgpos[back].y_pos;
}
for (j = back; j < i; j++)
glyphs->glyphs[i].geometry.x_offset -= glyphs->glyphs[j].geometry.width;
glyphs->glyphs[i].geometry.x_offset += PANGO_UNITS_26_6(x_pos);
glyphs->glyphs[i].geometry.y_offset += PANGO_UNITS_26_6(y_pos);
if (outgpos[i].new_advance)
glyphs->glyphs[i].geometry.width = PANGO_UNITS_26_6(outgpos[i].x_advance);
else
glyphs->glyphs[i].geometry.width += PANGO_UNITS_26_6(outgpos[i].x_advance);
}
FT_Free(gpos->memory, (void *)outgpos);
}
}
pango_glyph_string_set_size (glyphs, result_string->length);
last_cluster = -1;
for (i = 0; i < result_string->length; i++)
{
glyphs->glyphs[i].glyph = result_string->string[i];
glyphs->log_clusters[i] = result_string->logClusters[i];
if (glyphs->log_clusters[i] != last_cluster)
glyphs->glyphs[i].attr.is_cluster_start = 1;
else
glyphs->glyphs[i].attr.is_cluster_start = 0;
last_cluster = glyphs->log_clusters[i];
}
if (in_string)
TT_GSUB_String_Done (in_string);
if (out_string)
TT_GSUB_String_Done (out_string);
}
void
readttf(Font *fnt, Boolean quiet, Boolean only_range)
{
TT_Error error;
ttfinfo *ti, *Ti;
long Num, index;
unsigned int i, j;
long k, max_k;
unsigned short num_cmap;
unsigned short cmap_plat, cmap_enc;
int index_array[257];
static Boolean initialized = False;
TT_UShort in_string[2];
TTO_GSUB_String in, out;
TT_UShort script_index, language_index, feature_index;
TT_UShort req_feature_index = 0xFFFF;
/*
* We allocate a placeholder boundary and the `.notdef' character.
*/
if (!only_range)
{
ti = newchar(fnt);
ti->charcode = -1;
ti->adobename = ".notdef";
ti = newchar(fnt);
ti->charcode = -1;
ti->adobename = "||"; /* boundary character name */
}
/*
* Initialize FreeType engine.
*/
if (!initialized)
{
if ((error = TT_Init_FreeType(&engine)))
oops("Cannot initialize engine (error code = 0x%x).", error);
if ((error = TT_Init_Kerning_Extension(engine)))
oops("Cannot initialize kerning (error code = 0x%x).", error);
if (fnt->PSnames)
if ((error = TT_Init_Post_Extension(engine)))
oops("Cannot initialize PS name support (error code = 0x%x).", error);
if (fnt->rotate)
if ((error = TT_Init_GSUB_Extension(engine)))
oops("Cannot initialize GSUB support (error code = 0x%x).", error);
/*
* Load face.
*/
real_ttfname = TeX_search_ttf_file(&(fnt->ttfname));
if (!real_ttfname)
oops("Cannot find `%s'.", fnt->ttfname);
if ((error = TT_Open_Face(engine, real_ttfname, &face)))
oops("Cannot open `%s'.", real_ttfname);
/*
* Get face properties and allocate preload arrays.
*/
TT_Get_Face_Properties(face, &properties);
/*
* Now we try to open the proper font in a collection.
*/
if (fnt->fontindex != 0)
{
if (properties.num_Faces == 1)
{
warning("This isn't a TrueType collection.\n"
"Parameter `-f' is ignored.");
fnt->fontindex = 0;
fnt->fontindexparam = NULL;
}
else
{
TT_Close_Face(face);
if ((error = TT_Open_Collection(engine, real_ttfname,
fnt->fontindex, &face)))
oops("Cannot open font %lu in TrueType Collection `%s'.",
fnt->fontindex, real_ttfname);
}
}
/*
* Create instance.
*/
if ((error = TT_New_Instance(face, &instance)))
oops("Cannot create instance for `%s' (error code = 0x%x).",
real_ttfname, error);
/*
* We use a dummy glyph size of 10pt.
*/
if ((error = TT_Set_Instance_CharSize(instance, 10 * 64)))
oops("Cannot set character size (error code = 0x%x).", error);
matrix1.xx = (TT_Fixed)(floor(fnt->efactor * 1024) * (1L<<16)/1024);
matrix1.xy = (TT_Fixed)(floor(fnt->slant * 1024) * (1L<<16)/1024);
matrix1.yx = (TT_Fixed)0;
matrix1.yy = (TT_Fixed)(1L<<16);
if (fnt->rotate)
{
matrix2.xx = 0;
matrix2.yx = 1L << 16;
matrix2.xy = -matrix2.yx;
matrix2.yy = matrix2.xx;
}
if ((error = TT_Set_Instance_Transform_Flags(
instance,
fnt->rotate ? 1 : 0,
fnt->efactor != 1.0 ? 1 : 0)))
oops("Cannot set transform flags (error code = 0x%x).", error);
/*
* Create glyph container.
*/
if ((error = TT_New_Glyph(face, &glyph)))
oops("Cannot create glyph container (error code = 0x%x).", error);
fnt->units_per_em = properties.header->Units_Per_EM;
fnt->fixedpitch = properties.postscript->isFixedPitch;
fnt->italicangle = properties.postscript->italicAngle / 65536.0;
if (fnt->PSnames != Only)
{
num_cmap = properties.num_CharMaps;
for (i = 0; i < num_cmap; i++)
{
if ((error = TT_Get_CharMap_ID(face, i, &cmap_plat, &cmap_enc)))
oops("Cannot query cmap (error code = 0x%x).", error);
if (cmap_plat == fnt->pid && cmap_enc == fnt->eid)
break;
}
if (i == num_cmap)
{
fprintf(stderr, "%s: ERROR: Invalid platform and/or encoding ID.\n",
progname);
if (num_cmap == 1)
fprintf(stderr, " The only valid PID/EID pair is");
else
fprintf(stderr, " Valid PID/EID pairs are:\n");
for (i = 0; i < num_cmap; i++)
{
TT_Get_CharMap_ID(face, i, &cmap_plat, &cmap_enc);
fprintf(stderr, " (%i,%i)\n", cmap_plat, cmap_enc);
}
fprintf(stderr, "\n");
exit(1);
}
if ((error = TT_Get_CharMap(face, i, &char_map)))
oops("Cannot load cmap (error code = 0x%x).", error);
}
if (fnt->PSnames)
{
if ((error = TT_Load_PS_Names(face, &post)))
oops("Cannot load TrueType PS names (error code = 0x%x).", error);
}
else if (cmap_plat == Microsoft_platform &&
cmap_enc == Microsoft_Unicode_encoding)
set_encoding_scheme(encUnicode, fnt);
else if (cmap_plat == Macintosh_platform &&
cmap_enc == Macintosh_encoding)
set_encoding_scheme(encMac, fnt);
else
set_encoding_scheme(encFontSpecific, fnt);
if (fnt->rotate)
{
gsub = &gsub_;
error = TT_Load_GSUB_Table(face, gsub, NULL);
if (!error)
has_gsub = True;
else if (error != TT_Err_Table_Missing)
warning("Cannot load GSUB table (error code = 0x%x).", error);
else
warning("No GSUB data available "
"for vertical glyph presentation forms.");
/* we check for the `vert' feature in Chinese, Japanese, and Korean */
error = TT_GSUB_Select_Script(gsub,
SCRIPT_kana,
&script_index);
if (error)
goto check_hani;
error = TT_GSUB_Select_Feature(gsub,
FEATURE_vert,
script_index,
0xFFFF,
&feature_index);
if (error)
{
error = TT_GSUB_Select_Language(gsub,
LANGUAGE_JAN,
script_index,
&language_index,
&req_feature_index);
if (error)
goto check_hani;
error = TT_GSUB_Select_Feature(gsub,
FEATURE_vert,
script_index,
language_index,
&feature_index);
if (error)
goto check_hani;
else
goto Done;
}
else
goto Done;
check_hani:
error = TT_GSUB_Select_Script(gsub,
SCRIPT_hani,
&script_index);
if (error)
goto check_hang;
error = TT_GSUB_Select_Feature(gsub,
FEATURE_vert,
script_index,
0xFFFF,
&feature_index);
if (error)
{
error = TT_GSUB_Select_Language(gsub,
LANGUAGE_CHN,
script_index,
&language_index,
&req_feature_index);
if (error)
goto check_hang;
error = TT_GSUB_Select_Feature(gsub,
FEATURE_vert,
script_index,
language_index,
&feature_index);
if (error)
goto check_hang;
else
goto Done;
}
else
goto Done;
check_hang:
error = TT_GSUB_Select_Script(gsub,
SCRIPT_hang,
&script_index);
if (error)
goto Done;
error = TT_GSUB_Select_Feature(gsub,
FEATURE_vert,
script_index,
0xFFFF,
&feature_index);
if (error)
{
error = TT_GSUB_Select_Language(gsub,
LANGUAGE_KOR,
script_index,
&language_index,
&req_feature_index);
if (error)
goto Done;
error = TT_GSUB_Select_Feature(gsub,
FEATURE_vert,
script_index,
language_index,
&feature_index);
}
Done:
if (error)
{
warning("There is no data for vertical typesetting in GSUB table.");
has_gsub = False;
}
if (req_feature_index != 0xFFFF)
TT_GSUB_Add_Feature(gsub, req_feature_index, ALL_GLYPHS);
TT_GSUB_Add_Feature(gsub, feature_index, ALL_GLYPHS);
in.length = 1;
in.pos = 0;
in.string = in_string;
in.properties = NULL;
out.pos = 0;
out.allocated = 0;
out.string = NULL;
out.properties = NULL;
}
initialized = True;
}
if (!quiet)
{
if (only_range)
printf("\n\n%s:\n", fnt->fullname);
printf("\n");
printf("Glyph Code Glyph Name ");
printf("Width llx lly urx ury\n");
printf("---------------------------------------");
printf("---------------------------------\n");
}
/*
* We load only glyphs with a valid cmap entry. Nevertheless, for
* the default mapping, we use the first 256 glyphs addressed by
* ascending code points, followed by glyphs not in the cmap.
*
* If we compute a range, we take the character codes given in
* the fnt->sf_code array.
*
* If the -N flag is set, no cmap is used at all. Instead, the
* first 256 glyphs (with a valid PS name) are used for the default
* mapping.
*/
if (!only_range)
for (i = 0; i < 257; i++)
index_array[i] = 0;
else
for (i = 0; i < 256; i++)
fnt->inencptrs[i] = 0;
j = 0;
if (fnt->PSnames == Only)
max_k = properties.num_Glyphs - 1;
else
max_k = only_range ? 0xFF : 0x16FFFF;
for (k = 0; k <= max_k; k++)
{
char *an;
if (fnt->PSnames != Only)
{
if (only_range)
{
index = fnt->sf_code[k];
if (index < 0)
continue;
j = k;
}
else
index = k;
Num = TT_Char_Index(char_map, index);
/* now we try to get a vertical glyph form */
if (has_gsub)
{
in_string[0] = Num;
error = TT_GSUB_Apply_String(gsub, &in, &out);
if (error && error != TTO_Err_Not_Covered)
warning("Cannot get the vertical glyph form for glyph index %d.",
Num);
else
Num = out.string[0];
}
if (Num < 0)
oops("Failure on cmap mapping from %s.", fnt->ttfname);
if (Num == 0)
continue;
if (!only_range)
if (Num <= 256)
index_array[Num] = 1;
}
else
{
Num = k;
index = 0;
}
error = TT_Load_Glyph(instance, glyph, Num, 0);
if (!error)
error = TT_Get_Glyph_Big_Metrics(glyph, &metrics);
if (!error)
error = TT_Get_Glyph_Outline(glyph, &outline);
if (!error)
{
if (fnt->efactor != 1.0 || fnt->slant != 0.0 )
TT_Transform_Outline(&outline, &matrix1);
if (fnt->rotate)
TT_Transform_Outline(&outline, &matrix2);
}
if (!error)
error = TT_Get_Outline_BBox(&outline, &bbox); /* we need the non-
grid-fitted bbox */
if (!error)
{
if (fnt->PSnames)
(void)TT_Get_PS_Name(face, Num, &an);
else
an = code_to_adobename(index);
/* ignore characters not usable for typesetting with TeX */
if (strcmp(an, ".notdef") == 0)
continue;
if (strcmp(an, ".null") == 0)
continue;
if (strcmp(an, "nonmarkingreturn") == 0)
continue;
ti = newchar(fnt);
ti->charcode = index;
ti->glyphindex = Num;
ti->adobename = an;
ti->llx = bbox.xMin * 1000 / fnt->units_per_em;
ti->lly = bbox.yMin * 1000 / fnt->units_per_em;
ti->urx = bbox.xMax * 1000 / fnt->units_per_em;
ti->ury = bbox.yMax * 1000 / fnt->units_per_em;
/*
* We must now shift the rotated character both horizontally
* and vertically. The vertical amount is 25% by default.
*/
if (fnt->rotate)
{
ti->llx += (metrics.vertBearingY - bbox.xMin) *
1000 / fnt->units_per_em;
ti->lly -= 1000 * fnt->y_offset;
ti->urx += (metrics.vertBearingY - bbox.xMin) *
1000 / fnt->units_per_em;
ti->ury -= 1000 * fnt->y_offset;
}
/*
* We need to avoid negative heights or depths. They break accents
* in math mode, among other things.
*/
if (ti->lly > 0)
ti->lly = 0;
if (ti->ury < 0)
ti->ury = 0;
if (fnt->rotate)
ti->width = metrics.vertAdvance * 1000 / fnt->units_per_em;
else
ti->width = transform(metrics.horiAdvance * 1000 / fnt->units_per_em,
0, fnt->efactor, fnt->slant);
if (!quiet)
printf("%5ld %05lx %-25s %5d % 5d,% 5d -- % 5d,% 5d\n",
Num, index, ti->adobename,
ti->width,
ti->llx, ti->lly, ti->urx, ti->ury);
if (j < 256)
{
fnt->inencptrs[j] = ti;
ti->incode = j;
}
j++;
}
}
/*
* Now we load glyphs without a cmap entry, provided some slots are
* still free -- we skip this if we have to compute a range or use
* PS names.
*/
if (!only_range && !fnt->PSnames)
{
for (i = 1; i <= properties.num_Glyphs; i++)
{
char *an;
if (index_array[i] == 0)
{
error = TT_Load_Glyph(instance, glyph, i, 0);
if (!error)
error = TT_Get_Glyph_Big_Metrics(glyph, &metrics);
if (!error)
error = TT_Get_Glyph_Outline(glyph, &outline);
if (!error)
error = TT_Get_Outline_BBox(&outline, &bbox);
if (!error)
{
an = code_to_adobename(i | 0x1000000);
ti = newchar(fnt);
ti->charcode = i | 0x1000000;
ti->glyphindex = i;
ti->adobename = an;
ti->llx = bbox.xMin * 1000 / fnt->units_per_em;
ti->lly = bbox.yMin * 1000 / fnt->units_per_em;
ti->urx = bbox.xMax * 1000 / fnt->units_per_em;
ti->ury = bbox.yMax * 1000 / fnt->units_per_em;
if (ti->lly > 0)
ti->lly = 0;
if (ti->ury < 0)
ti->ury = 0;
ti->width = transform(metrics.horiAdvance*1000 / fnt->units_per_em,
0, fnt->efactor, fnt->slant);
if (!quiet)
printf("%5d %-25s %5d % 5d,% 5d -- % 5d,% 5d\n",
i, ti->adobename,
ti->width,
ti->llx, ti->lly, ti->urx, ti->ury);
if (j < 256)
{
fnt->inencptrs[j] = ti;
ti->incode = j;
}
else
break;
j++;
}
}
}
}
/* Finally, we construct a `Germandbls' glyph if necessary */
if (!only_range)
{
if (NULL == findadobe("Germandbls", fnt->charlist) &&
NULL != (Ti = findadobe("S", fnt->charlist)))
{
pcc *np, *nq;
ti = newchar(fnt);
ti->charcode = properties.num_Glyphs | 0x1000000;
ti->glyphindex = properties.num_Glyphs;
ti->adobename = "Germandbls";
ti->width = Ti->width << 1;
ti->llx = Ti->llx;
ti->lly = Ti->lly;
ti->urx = Ti->width + Ti->urx;
ti->ury = Ti->ury;
ti->kerns = Ti->kerns;
np = newpcc();
np->partname = "S";
nq = newpcc();
nq->partname = "S";
nq->xoffset = Ti->width;
np->next = nq;
ti->pccs = np;
ti->constructed = True;
if (!quiet)
printf("* %-25s %5d % 5d,% 5d -- % 5d,% 5d\n",
ti->adobename,
ti->width,
ti->llx, ti->lly, ti->urx, ti->ury);
}
}
/* kerning between subfonts isn't available */
if (!only_range)
readttf_kern(fnt);
}
