/*
- text-item.cc -- implement Text_item
+ text-item.cc -- implement Text_interface
source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- Jan Nieuwenhuizen <janneke@gnu.org>
- */
-#include <math.h>
+ (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
+*/
-#include "debug.hh"
#include "text-item.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"
-
-
-/*
- TEXT : STRING | (MARKUP SENTENCE)
- MARKUP: PROPERTY | ABBREV
- SENTENCE: TEXT | SENTENCE TEXT
- PROPERTY: (key . value)
- ABBREV: rows lines roman music bold italic named super sub text, or any font-style
- */
-
-/*
- FIXME:
- rewrite routines and syntax to be like
+#include <math.h>
- TEXT: STRING
- | (head-expression* TEXT*)
- ;
+#include "main.hh"
+#include "config.hh"
+#include "pango-font.hh"
+#include "warn.hh"
+#include "grob.hh"
+#include "font-interface.hh"
+#include "output-def.hh"
+#include "modified-font-metric.hh"
- head-expression is a list, containing a tag and a variable number of
- arguments. If necessary, the number of arguments can be stored in a alist,
- '(
- (tag1 . argcount1)
- (tag2 . argcount2)
+MAKE_SCHEME_CALLBACK (Text_interface, interpret_string, 3)
+SCM
+Text_interface::interpret_string (SCM layout_smob,
+ SCM props,
+ SCM markup)
+{
+ Output_def *layout = unsmob_output_def (layout_smob);
+
+ SCM_ASSERT_TYPE (layout, layout_smob, SCM_ARG1,
+ __FUNCTION__, "Layout definition");
+ SCM_ASSERT_TYPE (scm_is_string (markup), markup, SCM_ARG3,
+ __FUNCTION__, "string");
- ... etc
-
- )
+ String str = ly_scm2string (markup);
- or even entries like
+ Font_metric *fm = select_encoded_font (layout, props);
+ return fm->text_stencil (str).smobbed_copy ();
+}
- (tag . (argcount function-to-handle-the-tag ))
-
- */
-Molecule
-Text_item::text2molecule (Grob *me, SCM text, SCM alist_chain)
+MAKE_SCHEME_CALLBACK (Text_interface, interpret_markup, 3)
+SCM
+Text_interface::interpret_markup (SCM layout_smob, SCM props, SCM markup)
{
- if (gh_string_p (text))
- return string2molecule (me, text, alist_chain);
- else if (gh_list_p (text))
+ if (scm_is_string (markup))
+ return interpret_string (layout_smob, props, markup);
+ else if (scm_is_pair (markup))
{
- if (!gh_pair_p (gh_car (text)) && gh_string_p (gh_car (text)))
- return string2molecule (me, gh_car (text), alist_chain);
- else
- return markup_sentence2molecule (me, text, alist_chain);
+ SCM func = scm_car (markup);
+ SCM args = scm_cdr (markup);
+ if (!markup_p (markup))
+ programming_error ("Markup head has no markup signature.");
+
+ return scm_apply_2 (func, layout_smob, props, args);
}
- return Molecule ();
-}
-
-Molecule
-Text_item::string2molecule (Grob *me, SCM text, SCM alist_chain)
-{
- SCM style = ly_assoc_chain (ly_symbol2scm ("font-style"),
- alist_chain);
- if (gh_pair_p (style) && gh_symbol_p (gh_cdr (style)))
- alist_chain = Font_interface::add_style (me, gh_cdr(style), alist_chain);
-
- Font_metric *fm = Font_interface::get_font (me, alist_chain);
-
- SCM lookup = ly_assoc_chain (ly_symbol2scm ("lookup"), alist_chain);
-
- Molecule mol;
- if (gh_pair_p (lookup) && gh_cdr (lookup) ==ly_symbol2scm ("name"))
- mol = lookup_character (me, fm, text);
else
- mol = lookup_text (me, fm, text);
-
- return mol;
-}
-
-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 *me, Font_metric*fm, SCM text)
-{
-#if 0
- /*
- Fixme; should be done differently, move to font-interface?
- */
-
- SCM magnification = me->get_grob_property ("font-magnification");
-
- Font_metric* metric = 0;
- if (gh_number_p (magnification))
{
-
- Real realmag = pow (1.2, gh_scm2int (magnification));
- metric = all_fonts_global_p->find_scaled (ly_scm2string (font_name), realmag);
-
+ programming_error ("Is not a markup: ");
+ scm_display (markup, scm_current_error_port());
assert (false);
+ Box b;
+ b[X_AXIS].set_empty();
+ b[Y_AXIS].set_empty();
+
+ Stencil s(b, SCM_EOL);
+ return s.smobbed_copy();
}
-
-#endif
-
- SCM list = gh_list (ly_symbol2scm ("text"), text, SCM_UNDEFINED);
- list = fontify_atom (fm, list);
-
- return Molecule (fm->text_dimension (ly_scm2string (text)), list);
}
-Molecule
-Text_item::markup_sentence2molecule (Grob *me, SCM markup_sentence,
- SCM alist_chain)
+MAKE_SCHEME_CALLBACK (Text_interface,print,1);
+SCM
+Text_interface::print (SCM grob)
{
- SCM sheet = me->paper_l ()->style_sheet_;
- SCM f = gh_cdr (scm_assoc (ly_symbol2scm ("markup-to-properties"), sheet));
+ Grob *me = unsmob_grob (grob);
- SCM markup = gh_car (markup_sentence);
- SCM sentence = gh_cdr (markup_sentence);
-
- SCM p = gh_cons (gh_call2 (f, sheet, markup), alist_chain);
-
- Axis align = X_AXIS;
- SCM a = ly_assoc_chain (ly_symbol2scm ("align"), p);
- if (gh_pair_p (a) && gh_number_p (gh_cdr (a)))
- align = (Axis)gh_scm2int (gh_cdr (a));
-
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- Real kern = 0;
- SCM k = ly_assoc_chain (ly_symbol2scm ("kern"), p);
- if (gh_pair_p (k) && gh_number_p (gh_cdr (k)))
- kern = gh_scm2double (gh_cdr (k)) * staff_space;
-
- Real raise = 0;
- SCM r = ly_assoc_chain (ly_symbol2scm ("raise"), p);
- if (gh_pair_p (r) && gh_number_p (gh_cdr (r)))
- raise = gh_scm2double (gh_cdr (r)) * staff_space;
-
-#if 0
- Offset o (align == X_AXIS ? kern : 0,
- (align == Y_AXIS ? - kern : 0) + raise);
-#else
- Offset o (0, (align == Y_AXIS ? - kern : 0) + raise);
-#endif
-
- Molecule mol;
- while (gh_pair_p (sentence))
- {
- /* Ugh: this (kerning) only works if 'kern' is the first modifier of a
- markup. I guess the only solution is to rewrite markup definition,
- see above. */
- Molecule m = text2molecule (me, gh_car (sentence), p);
- Real m_kern = 0;
- SCM m_p = SCM_EOL;
- if (gh_pair_p (gh_car (sentence)))
- m_p = gh_cons (gh_call2 (f, sheet, gh_caar (sentence)), alist_chain);
- SCM m_k = ly_assoc_chain (ly_symbol2scm ("kern"), m_p);
- if (gh_pair_p (m_k) && gh_number_p (gh_cdr (m_k)))
- m_kern = gh_scm2double (gh_cdr (m_k)) * staff_space;
-
- if (!m.empty_b ())
- {
- m.translate (o);
- mol.add_at_edge (align, align == X_AXIS ? RIGHT : DOWN, m, m_kern);
- }
- sentence = gh_cdr (sentence);
- }
- return mol;
+ SCM t = me->get_property ("text");
+ SCM chain = Font_interface::text_font_alist_chain (me);
+ return interpret_markup (me->get_layout ()->self_scm (), chain, t);
}
-MAKE_SCHEME_CALLBACK (Text_item, brew_molecule, 1);
-SCM
-Text_item::brew_molecule (SCM smob)
+/* Ugh. Duplicated from Scheme. */
+bool
+Text_interface::markup_p (SCM x)
{
- Grob *me = unsmob_grob (smob);
-
- SCM text = me->get_grob_property ("text");
+ return (scm_is_string (x)
+ || (scm_is_pair (x)
+ && SCM_BOOL_F
+ != scm_object_property (scm_car (x),
+ ly_symbol2scm ("markup-signature"))));
+}
+
+ADD_INTERFACE (Text_interface,"text-interface",
+ "A scheme markup text, see @usermanref{Text-markup}.",
+ "text baseline-skip word-space");
+
- 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 ();
-}
projects / lilypond.git / blobdiff