source file of the GNU LilyPond music typesetter
- (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
+ (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
*/
+#include <math.h>
+#include "warn.hh"
#include "text-item.hh"
-#include "debug.hh"
-#include "molecule.hh"
#include "paper-def.hh"
+#include "font-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "staff-symbol-referencer.hh"
+#include "main.hh"
+#include "all-font-metrics.hh"
+#include "afm.hh"
#include "lookup.hh"
-Molecule*
-Text_item::do_brew_molecule_p () const
+
+/*
+
+ TEXT: STRING
+ | (MARKUP? TEXT+)
+ ;
+
+ HEAD: MARKUP-ITEM | (MARKUP-ITEM+)
+
+ MARKUP-ITEM: PROPERTY | ABBREV | FONT-STYLE
+ PROPERTY: (key . value)
+ ABBREV: rows lines roman music bold italic named super sub text
+
+*/
+
+Molecule
+Text_item::text2molecule (Grob *me, SCM text, SCM alist_chain)
+{
+ if (gh_string_p (text))
+ return string2molecule (me, text, alist_chain);
+ else if (gh_pair_p (text))
+ {
+ /* urg, why not just do this in markup_text2molecule ? */
+ if (gh_string_p (ly_car (text)))
+ return markup_text2molecule (me,
+ gh_append2 (scm_list_n (SCM_EOL,
+ SCM_UNDEFINED),
+ text),
+ alist_chain);
+ /*
+ Allow (faulty) texts that are in an extra list:
+ #'(("foo"))
+ */
+ else if (scm_ilength (text) <= 1)
+ return text2molecule (me, ly_car (text), alist_chain);
+ else
+ return markup_text2molecule (me, text, alist_chain);
+ }
+ return Molecule ();
+}
+
+Molecule
+Text_item::string2molecule (Grob *me, SCM text, SCM alist_chain)
{
- SCM style = get_elt_property ("style");
- String st = gh_string_p (style) ? ly_scm2string (style) : "";
- SCM txt = get_elt_property ("text");
- String t = gh_string_p (txt) ? ly_scm2string (txt) : "";
+ SCM style = ly_assoc_chain (ly_symbol2scm ("font-style"),
+ alist_chain);
+ if (gh_pair_p (style) && gh_symbol_p (ly_cdr (style)))
+ alist_chain = Font_interface::add_style (me, ly_cdr (style), alist_chain);
+
+ Font_metric *fm = Font_interface::get_font (me, alist_chain);
- Molecule a= paper_l ()->lookup_l(0)->text (st, t, paper_l ());
+ SCM lookup = ly_assoc_chain (ly_symbol2scm ("lookup"), alist_chain);
+
+ Molecule mol;
+ if (gh_pair_p (lookup) && ly_cdr (lookup) ==ly_symbol2scm ("name"))
+ mol = lookup_character (me, fm, text);
+ else
+ mol = lookup_text (me, fm, text);
+
+ return mol;
+}
- return new Molecule (a);
+Molecule
+Text_item::lookup_character (Grob *, Font_metric*fm, SCM char_name)
+{
+ return fm->find_by_name (ly_scm2string (char_name));
}
+Molecule
+Text_item::lookup_text (Grob *, Font_metric*fm, SCM text)
+{
+ SCM list = scm_list_n (ly_symbol2scm ("text"), text, SCM_UNDEFINED);
+ list = fontify_atom (fm, list);
+
+ return Molecule (fm->text_dimension (ly_scm2string (text)), list);
+}
+
+
+/*
+ TODO:
+
+ DOCME.
+
+
+ MARKUP_TEXT must be compound (may not be simple string.)
+
+ */
+Molecule
+Text_item::markup_text2molecule (Grob *me, SCM markup_text,
+ SCM alist_chain)
+{
+ SCM sheet = me->get_paper ()->style_sheet_;
+ SCM f = ly_cdr (scm_assoc (ly_symbol2scm ("markup-to-properties"), sheet));
+
+ SCM markup = ly_car (markup_text);
+ SCM text = ly_cdr (markup_text);
+
+ SCM p = gh_cons (gh_call2 (f, sheet, markup), alist_chain);
+
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+
+ /*
+ Line mode is default.
+ */
+ Axis axis = X_AXIS;
+
+ SCM a = ly_assoc_chain (ly_symbol2scm ("axis"), p);
+ if (gh_pair_p (a) && ly_axis_p (ly_cdr (a)))
+ axis = (Axis)gh_scm2int (ly_cdr (a));
+
+ Real baseline_skip = 0;
+ SCM b = ly_assoc_chain (ly_symbol2scm ("baseline-skip"), p);
+ if (gh_pair_p (b) && gh_number_p (ly_cdr (b)))
+ baseline_skip = gh_scm2double (ly_cdr (b)) * staff_space;
+
+ Real kern[2] = {0,0};
+
+ SCM k = ly_assoc_chain (ly_symbol2scm ("kern"), p);
+ if (gh_pair_p (k) && gh_number_p (ly_cdr (k)))
+ kern[axis] = gh_scm2double (ly_cdr (k)) * staff_space;
+
+ Real raise = 0;
+ SCM r = ly_assoc_chain (ly_symbol2scm ("raise"), p);
+ if (gh_pair_p (r) && gh_number_p (ly_cdr (r)))
+ raise = gh_scm2double (ly_cdr (r)) * staff_space;
+
+
+ Interval extent;
+ bool extent_b = false;
+ SCM e = ly_assoc_chain (ly_symbol2scm ("extent"), p);
+ if (gh_pair_p (e) && ly_number_pair_p (ly_cdr (e)))
+ {
+ extent = Interval (gh_scm2double (ly_cadr (e)) * staff_space,
+ gh_scm2double (ly_cddr (e)) * staff_space);
+ extent_b = true;
+ }
+
+ Offset o (kern[X_AXIS], raise - kern[Y_AXIS]);
+
+ Molecule mol = Lookup::filledbox (Box (Interval (0,0), Interval (0,0)));
+
+ SCM cp = ly_deep_copy (p);
+ if (raise)
+ {
+ SCM cr = ly_assoc_chain (ly_symbol2scm ("raise"), cp);
+ scm_set_cdr_x (cr, gh_int2scm (0));
+ }
+
+ while (gh_pair_p (text))
+ {
+ Molecule m = text2molecule (me, ly_car (text), cp);
+
+ if (!m.empty_b ())
+ {
+ m.translate_axis (mol.extent (axis)[axis == X_AXIS ? RIGHT : DOWN]
+ - (axis == Y_AXIS ? baseline_skip : 0),
+ axis);
+ mol.add_molecule (m);
+ }
+ text = ly_cdr (text);
+ }
+
+
+ /* Set extend to markup requested value. */
+ if (extent_b)
+ {
+ Box b = mol.extent_box ();
+ SCM expr = mol.get_expr ();
+
+ b[axis] = extent;
+ mol = Molecule (b, expr);
+ }
+
+ mol.translate (o);
+
+ return mol;
+}
+
+MAKE_SCHEME_CALLBACK (Text_item, brew_molecule, 1);
+SCM
+Text_item::brew_molecule (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+
+ SCM text = me->get_grob_property ("text");
+
+ SCM properties = Font_interface::font_alist_chain (me);
+ Molecule mol = Text_item::text2molecule (me, text, properties);
+
+ SCM space = me->get_grob_property ("word-space");
+ if (gh_number_p (space))
+ {
+ Molecule m;
+ m.set_empty (false);
+ mol.add_at_edge (X_AXIS, RIGHT, m, gh_scm2double (space)
+ * Staff_symbol_referencer::staff_space (me));
+ }
+ return mol.smobbed_copy ();
+}
+
+
+
+ADD_INTERFACE (Text_item,"text-interface",
+ "A scheme markup text",
+ "text align baseline-skip lookup raise kern word-space magnify");
projects / lilypond.git / blobdiff