/*
- pango-font.cc -- implement Pango_font
+ pango-font.cc -- implement Pango_font
source file of the GNU LilyPond music typesetter
- (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
-
+ (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
+#define PANGO_ENABLE_BACKEND // ugh, why necessary?
#include <pango/pangoft2.h>
+#include <freetype/ftxf86.h>
+
+#include <map>
+
+/* Ugh. */
#include "pango-font.hh"
-#include "stencil.hh"
+#include "dimensions.hh"
+#include "file-name.hh"
+#include "international.hh"
+#include "lookup.hh" // debugging
+#include "main.hh"
+#include "string-convert.hh"
+#include "warn.hh"
+#include "all-font-metrics.hh"
-PangoStyle
-symbol_to_pango_style (SCM style)
+#if HAVE_PANGO_FT2
+#include "stencil.hh"
+
+Pango_font::Pango_font (PangoFT2FontMap *fontmap,
+ PangoFontDescription *description,
+ Real output_scale)
{
- PangoStyle pstyle = PANGO_STYLE_NORMAL;
- if (style == ly_symbol2scm ("italic"))
- {
- pstyle = PANGO_STYLE_NORMAL;
- }
- else if (style == ly_symbol2scm ("oblique")
- || style == ly_symbol2scm ("slanted")
- )
- {
- pstyle = PANGO_STYLE_OBLIQUE;
- }
+ (void) fontmap;
+ physical_font_tab_ = scm_c_make_hash_table (11);
+ PangoDirection pango_dir = PANGO_DIRECTION_LTR;
+ context_
+ = pango_ft2_get_context (PANGO_RESOLUTION, PANGO_RESOLUTION);
+ // context_ = pango_ft2_font_map_create_context (fontmap);
+
+ pango_description_ = pango_font_description_copy (description);
+ attribute_list_ = pango_attr_list_new ();
+
+ /*
+ urgh. I don't understand this. Why isn't this 1/(scale *
+ resolution * output_scale)
+
+ --hwn
+ */
+ output_scale_ = output_scale;
+ scale_ = INCH_TO_BP / (Real (PANGO_SCALE) * Real (PANGO_RESOLUTION) * output_scale);
+
+ /*
+ ugh. Should make this configurable.
+ */
+ pango_context_set_language (context_, pango_language_from_string ("en_US"));
+ pango_context_set_base_dir (context_, pango_dir);
+ pango_context_set_font_description (context_, description);
+}
- return pstyle;
+Pango_font::~Pango_font ()
+{
+ pango_font_description_free (pango_description_);
+ g_object_unref (context_);
+ pango_attr_list_unref (attribute_list_);
}
-PangoVariant
-symbol_to_pango_variant (SCM variant)
+void
+Pango_font::register_font_file (string filename, string ps_name)
{
- PangoVariant pvariant;
- if (variant == ly_symbol2scm ("caps"))
- {
- pvariant = PANGO_VARIANT_SMALL_CAPS;
- }
- return pvariant;
+ scm_hash_set_x (physical_font_tab_,
+ ly_string2scm (ps_name),
+ ly_string2scm (filename));
+}
+
+void
+Pango_font::derived_mark () const
+{
+ scm_gc_mark (physical_font_tab_);
}
-PangoWeight
-symbol_to_pango_weight (SCM weight)
+void
+get_glyph_index_name (char *s, FT_ULong code)
{
- PangoWeight pw = PANGO_WEIGHT_NORMAL;
- if (weight == ly_symbol2scm ("bold"))
- {
- pw = PANGO_WEIGHT_BOLD;
- }
- if (weight == ly_symbol2scm ("heavy"))
+ sprintf (s, "glyphIndex%lX", code);
+}
+
+void
+get_unicode_name (char*s, FT_ULong code)
+{
+ if (code > 0xFFFF)
+ sprintf (s, "u%lX", code);
+ else
+ sprintf (s, "uni%04lX", code);
+}
+
+
+Stencil
+Pango_font::pango_item_string_stencil (PangoItem const *item, string str,
+ bool tight_bbox) const
+{
+ const int GLYPH_NAME_LEN = 256;
+ char glyph_name[GLYPH_NAME_LEN];
+ PangoAnalysis const *pa = &(item->analysis);
+ PangoGlyphString *pgs = pango_glyph_string_new ();
+
+ pango_shape (str.c_str () + item->offset,
+ item->length, (PangoAnalysis*) pa, pgs);
+
+ PangoRectangle logical_rect;
+ PangoRectangle ink_rect;
+ pango_glyph_string_extents (pgs, pa->font, &ink_rect, &logical_rect);
+
+ PangoFcFont *fcfont = G_TYPE_CHECK_INSTANCE_CAST (pa->font,
+ PANGO_TYPE_FC_FONT,
+ PangoFcFont);
+
+ FT_Face ftface = pango_fc_font_lock_face (fcfont);
+
+ PangoRectangle const *which_rect
+ = (tight_bbox)
+ ? &ink_rect
+ : &logical_rect;
+
+ Box b (Interval (PANGO_LBEARING (logical_rect),
+ PANGO_RBEARING (logical_rect)),
+ Interval (-PANGO_DESCENT (*which_rect),
+ PANGO_ASCENT (*which_rect)));
+
+ b.scale (scale_);
+ char const *ps_name_str0 = FT_Get_Postscript_Name (ftface);
+ FcPattern *fcpat = fcfont->font_pattern;
+ FcChar8 *file_name_as_ptr = 0;
+ FcPatternGetString (fcpat, FC_FILE, 0, &file_name_as_ptr);
+
+ string file_name;
+ if (file_name_as_ptr)
{
- pw = PANGO_WEIGHT_HEAVY;
+ /* Normalize file name. */
+ file_name = File_name ((char const *)file_name_as_ptr).to_string ();
}
- if (weight == ly_symbol2scm ("ultrabold"))
+
+ SCM glyph_exprs = SCM_EOL;
+ SCM *tail = &glyph_exprs;
+
+ Index_to_charcode_map const *cmap = 0;
+ bool has_glyph_names = ftface->face_flags & FT_FACE_FLAG_GLYPH_NAMES;
+ if (! has_glyph_names)
+ cmap = all_fonts_global->get_index_to_charcode_map (file_name, ftface);
+
+ bool is_ttf = string (FT_Get_X11_Font_Format (ftface)) == "TrueType";
+ bool cid_keyed = false;
+ for (int i = 0; i < pgs->num_glyphs; i++)
{
- pw = PANGO_WEIGHT_ULTRABOLD;
+ PangoGlyphInfo *pgi = pgs->glyphs + i;
+
+ PangoGlyph pg = pgi->glyph;
+ PangoGlyphGeometry ggeo = pgi->geometry;
+
+ glyph_name[0] = '\0';
+ if (has_glyph_names)
+ {
+ int errorcode = FT_Get_Glyph_Name (ftface, pg, glyph_name, GLYPH_NAME_LEN);
+ if (errorcode)
+ programming_error ("FT_Get_Glyph_Name returns error");
+ }
+
+ SCM char_id = SCM_EOL;
+ if (glyph_name[0] == '\0'
+ && cmap
+ && is_ttf
+ && cmap->find (pg) != cmap->end ())
+ {
+ FT_ULong char_code = cmap->find (pg)->second;
+ get_unicode_name (glyph_name, char_code);
+ }
+
+ if (glyph_name[0] == '\0' && has_glyph_names)
+ {
+ programming_error (_f ("Glyph has no name, but font supports glyph naming.\n"
+ "Skipping glyph U+%0X, file %s",
+ pg,
+ file_name.c_str ()));
+ continue;
+ }
+
+
+ if (glyph_name == string (".notdef") && is_ttf)
+ glyph_name[0] = '\0';
+
+ if (glyph_name[0] == '\0' && is_ttf)
+ {
+ // access by glyph index directly.
+ get_glyph_index_name (glyph_name, pg);
+ }
+
+ if (glyph_name[0] == '\0')
+ {
+ /*
+ CID entry
+ */
+ cid_keyed = true;
+ char_id = scm_from_uint32 (pg);
+ }
+ else
+ char_id = scm_from_locale_string (glyph_name);
+
+ *tail = scm_cons (scm_list_4 (scm_from_double (ggeo.width * scale_),
+ scm_from_double (ggeo.x_offset * scale_),
+ scm_from_double (ggeo.y_offset * scale_),
+
+ char_id),
+ SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
}
- if (weight == ly_symbol2scm ("light"))
+
+ PangoFontDescription *descr = pango_font_describe (pa->font);
+ Real size = pango_font_description_get_size (descr)
+ / (Real (PANGO_SCALE));
+
+
+ if (!ps_name_str0)
+ warning (_f ("no PostScript font name for font `%s'", file_name));
+
+ string ps_name;
+ if (!ps_name_str0
+ && file_name != ""
+ && (file_name.find (".otf") != NPOS
+ || file_name.find (".cff") != NPOS))
{
- pw = PANGO_WEIGHT_LIGHT;
+
+ /* UGH: kludge a PS name for OTF/CFF fonts. */
+ string name = file_name;
+ ssize idx = file_name.find (".otf");
+ if (idx == NPOS)
+ idx = file_name.find (".cff");
+
+ name = name.substr (0, idx);
+
+ ssize slash_idx = name.rfind ('/');
+ if (slash_idx != NPOS)
+ {
+ slash_idx ++;
+ name = name.substr (slash_idx,
+ name.length () - slash_idx);
+ }
+
+ string initial = name.substr (0, 1);
+ initial = String_convert::to_upper (initial);
+ name = name.substr (1, name.length () - 1);
+ name = String_convert::to_lower (name);
+ ps_name = initial + name;
}
- if (weight == ly_symbol2scm ("ultralight"))
+ else if (ps_name_str0)
+ ps_name = ps_name_str0;
+
+ if (ps_name.length ())
{
- pw = PANGO_WEIGHT_ULTRALIGHT;
+ ((Pango_font *) this)->register_font_file (file_name, ps_name);
+ pango_fc_font_unlock_face (fcfont);
+
+ SCM expr = scm_list_5 (ly_symbol2scm ("glyph-string"),
+ ly_string2scm (ps_name),
+ scm_from_double (size),
+ scm_from_bool (cid_keyed),
+ ly_quote_scm (glyph_exprs));
+
+ return Stencil (b, expr);
}
- return pw;
+ warning (_ ("FreeType face has no PostScript font name"));
+ return Stencil ();
}
-PangoStretch
-symbol_to_pango_stretch (SCM stretch)
+SCM
+Pango_font::physical_font_tab () const
{
- PangoStretch ps = PANGO_STRETCH_NORMAL;
-
- /*
- // TODO
-
- PANGO_STRETCH_ULTRA_CONDENSED,
- PANGO_STRETCH_EXTRA_CONDENSED,
- PANGO_STRETCH_CONDENSED,
- PANGO_STRETCH_SEMI_CONDENSED,
-
- PANGO_STRETCH_SEMI_EXPANDED,
- PANGO_STRETCH_EXPANDED,
- PANGO_STRETCH_EXTRA_EXPANDED,
- PANGO_STRETCH_ULTRA_EXPANDED
- */
- return ps;
+ return physical_font_tab_;
}
-
-PangoFontDescription*
-symbols_to_pango_font_description(SCM family,
- SCM style,
- SCM variant,
- SCM weight,
- SCM stretch,
- SCM size)
+Stencil
+Pango_font::word_stencil (string str) const
{
- PangoFontDescription * description = pango_font_description_new ();
-
- pango_font_description_set_family (description,
- ly_symbol2string (family).to_str0 ());
- pango_font_description_set_style (description,
- symbol_to_pango_style (style));
- pango_font_description_set_variant (description,
- symbol_to_pango_variant (variant));
- pango_font_description_set_weight (description,
- symbol_to_pango_weight (weight));
- pango_font_description_set_stretch (description,
- symbol_to_pango_stretch (stretch));
- pango_font_description_set_size (description,
- gint (scm_to_double (size) * PANGO_SCALE));
-
- return description;
+ return text_stencil (str, true);
}
-
-Pango_font::Pango_font (PangoFT2FontMap *fontmap,
- int resolution,
- Direction dir,
- PangoFontDescription * description)
-{
- PangoDirection pango_dir = (dir==RIGHT)
- ? PANGO_DIRECTION_LTR
- : PANGO_DIRECTION_RTL;
- context_ = pango_ft2_font_map_create_context (fontmap);
- attribute_list_= pango_attr_list_new();
- scale_ = PANGO_SCALE * resolution * 72.27;
- pango_context_set_language (context_, pango_language_from_string ("en_US"));
- pango_context_set_base_dir (context_, pango_dir);
- pango_context_set_font_description (context_, description);
-}
-
-Pango_font::~Pango_font ()
+Stencil
+Pango_font::text_stencil (string str) const
{
- g_object_unref (context_);
- pango_attr_list_unref (attribute_list_);
+ return text_stencil (str, false);
}
-
Stencil
-Pango_font::text_stencil (String str) const
+Pango_font::text_stencil (string str, bool tight) const
{
- GList * items = pango_itemize (context_,
- str.to_str0 (),
- 0, str.length (), attribute_list_,
- NULL);
+ GList *items
+ = pango_itemize (context_,
+ str.c_str (),
+ 0, str.length (), attribute_list_,
+ NULL);
- const int GLYPH_NAME_LEN = 256;
- char glyph_name[GLYPH_NAME_LEN];
-
- Box dest_extent;
- dest_extent.set_empty ();
- GList * ptr = items;
- SCM glyph_exprs = SCM_EOL;
- while (ptr)
+ Stencil dest;
+
+ Real last_x = 0.0;
+
+ Direction text_dir = RIGHT;
+ for (GList *p = items; p; p = p->next)
+ {
+ PangoItem *item = (PangoItem *) p->data;
+ if (item->analysis.level == PANGO_DIRECTION_RTL)
+ text_dir = LEFT;
+ }
+
+ for (GList *ptr = items; ptr; ptr = ptr->next)
{
- PangoItem *item = (PangoItem*) ptr->data;
- PangoAnalysis *pa = &(item->analysis);
- PangoGlyphString *pgs = pango_glyph_string_new();
- pango_shape (str.to_str0 (), str.length (), pa, pgs);
+ PangoItem *item = (PangoItem *) ptr->data;
- PangoRectangle logical_rect;
- pango_glyph_string_extents (pgs, pa->font, NULL, &logical_rect);
-
- PangoFcFont * fcfont = G_TYPE_CHECK_INSTANCE_CAST(pa->font,
- PANGO_TYPE_FC_FONT,
- PangoFcFont);
- FT_Face ftface = pango_fc_font_lock_face (fcfont);
- Box b (Interval (0, logical_rect.width),
- Interval (0, logical_rect.height));
-
- b.translate (Offset (- logical_rect.x, -logical_rect.y));
-
- b.scale (scale_);
- dest_extent.unite (b);
-
- for (int i = 0; i < pgs->num_glyphs; i++)
+ Stencil item_stencil = pango_item_string_stencil (item, str, tight);
+
+ if (text_dir == RIGHT)
{
- PangoGlyphInfo *pgi = pgs->glyphs + i;
-
- PangoGlyph pg = pgi->glyph;
- PangoGlyphGeometry ggeo = pgi->geometry;
-
- FT_Get_Glyph_Name (ftface, pg, glyph_name, GLYPH_NAME_LEN);
- glyph_exprs = scm_cons (scm_list_5 (ly_symbol2scm ("named-ps-glyph"),
- scm_from_int (ggeo.x_offset),
- scm_from_int (ggeo.y_offset),
- scm_makfrom0str (glyph_name),
- scm_makfrom0str (FT_Get_Postscript_Name (ftface))),
- glyph_exprs);
+ item_stencil.translate_axis (last_x, X_AXIS);
+ last_x = item_stencil.extent (X_AXIS)[RIGHT];
+ }
+ else if (text_dir == LEFT)
+ {
+ dest.translate_axis (item_stencil.extent (X_AXIS)[RIGHT], X_AXIS);
}
- ptr = ptr->next;
+#if 0 /* Check extents. */
+ if (!item_stencil.extent_box ()[X_AXIS].is_empty ())
+ {
+ Stencil frame = Lookup::frame (item_stencil.extent_box (), 0.1, 0.1);
+ Box empty;
+ empty.set_empty ();
+ Stencil dimless_frame (empty, frame.expr ());
+ dest.add_stencil (frame);
+ }
+#endif
+
+ dest.add_stencil (item_stencil);
}
- Stencil dest (dest_extent,
- scm_cons (ly_symbol2scm ("combine-stencil"),
- glyph_exprs));
+ /*
+ UGH. Should have flags per output format signifying supported
+ options.
+ */
+ if (output_backend_global != "ps"
+ && output_backend_global != "eps")
+ {
+ /*
+ For Pango based backends, we take a shortcut.
+ */
+ SCM exp
+ = scm_list_3 (ly_symbol2scm ("utf-8-string"),
+ ly_string2scm (description_string ()),
+ ly_string2scm (str));
+
+ Box b (Interval (0, 0), Interval (0, 0));
+ b.unite (dest.extent_box ());
+ return Stencil (b, exp);
+ }
+
+
return dest;
}
+
+string
+Pango_font::description_string () const
+{
+ char *descr_string = pango_font_description_to_string (pango_description_);
+ string s (descr_string);
+ g_free (descr_string);
+ return s;
+}
+
+
+SCM
+Pango_font::font_file_name () const
+{
+ return SCM_BOOL_F;
+}
+
+#endif
projects / lilypond.git / blobdiff