/*
- text-item.cc -- implement Text_item
+ text-item.cc -- implement Text_interface
source file of the GNU LilyPond music typesetter
- (c) 1998--2001 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? TEXT+)
- ;
- HEAD: MARKUP-ITEM | (MARKUP-ITEM+)
+#include <cmath>
- 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)
+#include "warn.hh"
+#include "grob.hh"
+#include "font-interface.hh"
+#include "virtual-font-metric.hh"
+#include "output-def.hh"
+#include "modified-font-metric.hh"
+#include "ly-module.hh"
+
+MAKE_SCHEME_CALLBACK (Text_interface, interpret_string, 4)
+SCM
+Text_interface::interpret_string (SCM layout_smob,
+ SCM props, SCM input_encoding, SCM markup)
{
- if (gh_string_p (text))
- return string2molecule (me, text, alist_chain);
- else if (gh_pair_p (text))
+ 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");
+ SCM_ASSERT_TYPE (input_encoding == SCM_EOL || scm_is_symbol (input_encoding),
+ input_encoding, SCM_ARG2, __FUNCTION__, "symbol");
+
+ String str = ly_scm2string (markup);
+ if (!scm_is_symbol (input_encoding))
{
- /* 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);
+ SCM enc = layout->lookup_variable (ly_symbol2scm ("inputencoding"));
+ if (scm_is_string (enc))
+ input_encoding = scm_string_to_symbol (enc);
+ else if (scm_is_symbol (enc))
+ input_encoding = enc;
}
- 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 (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);
- 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;
-}
+ Font_metric *fm = select_encoded_font (layout, props, input_encoding);
-Molecule
-Text_item::lookup_character (Grob *, Font_metric*fm, SCM char_name)
-{
- return fm->find_by_name (ly_scm2string (char_name));
+ SCM lst = SCM_EOL;
+ Box b;
+ if (Modified_font_metric* mf = dynamic_cast<Modified_font_metric*> (fm))
+ {
+ lst = scm_list_3 (ly_symbol2scm ("text"),
+ mf->self_scm (),
+ markup);
+
+ b = mf->text_dimension (str);
+ }
+ else
+ {
+ /* ARGH. */
+ programming_error ("Must have Modified_font_metric for text.");
+ scm_display (fm->description_, scm_current_error_port ());
+ }
+
+ return Stencil (b, lst).smobbed_copy ();
}
-Molecule
-Text_item::lookup_text (Grob *me, Font_metric*fm, SCM text)
+MAKE_SCHEME_CALLBACK (Text_interface, interpret_markup, 3)
+SCM
+Text_interface::interpret_markup (SCM layout_smob, SCM props, SCM markup)
{
-#if 0
- /*
- Fixme; should be done differently, move to font-interface?
-
- differently -- how/why?
- */
-
- SCM magnification = me->get_grob_property ("font-magnification");
-
- Font_metric* metric = 0;
- if (gh_number_p (magnification))
+ if (scm_is_string (markup))
+ return interpret_string (layout_smob, props, SCM_EOL, markup);
+ else if (scm_is_pair (markup))
{
-
- Real realmag = pow (1.2, gh_scm2int (magnification));
- metric = all_fonts_global_p->find_scaled (ly_scm2string (font_name), realmag);
-
- assert (false);
+ 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);
}
-#else
- SCM magnification = me->get_grob_property ("font-magnification");
-
- if (gh_number_p (magnification) && gh_scm2double (magnification) > 1)
- programming_error ("font-magnification disabled");
-#endif
-
-
- 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);
+ return SCM_EOL;
}
-Molecule
-Text_item::markup_text2molecule (Grob *me, SCM markup_text,
- 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 = ly_cdr (scm_assoc (ly_symbol2scm ("markup-to-properties"), sheet));
+ Grob *me = unsmob_grob (grob);
- 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) && isaxis_b (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 (0, (axis == Y_AXIS ? - kern[axis] : 0));
-
- Molecule mol;
- while (gh_pair_p (text))
- {
-
- Molecule m = text2molecule (me, ly_car (text), p);
-
- /*
- TODO: look at padding?
-
- Look ahead here for kern and raise.
-
- (cols "foo" ((raise . 1) "bar"))
- (cols "foo" ((bold (raise . 1)) "bar"))
-
- When constructing the molecule for bar, all normal extra
- properties found, such as bold, are used for the construction
- of bar's molecule. But for kern or raise, it seems that we're
- too late then, translating bar's molecule has no effect (or
- maybe the effect of translating gets nullified when bar's
- molecule is `added_to_edge' of the molecule for foo?)
-
- So, while constructing foo's molecule, we look ahead for the
- raise of bar. The HEAD of the description of bar may be a
- single property, or a list, so we must check that too.
- */
-
- SCM next_p = SCM_EOL;
- if (gh_pair_p (ly_car (text)))
- next_p = scm_list_n (gh_call2 (f, sheet, ly_caar (text)), SCM_UNDEFINED);
- SCM next_k = ly_assoc_chain (ly_symbol2scm ("kern"), next_p);
- Real next_kern = kern[axis];
- if (gh_pair_p (next_k) && gh_number_p (ly_cdr (next_k)))
- next_kern = gh_scm2double (ly_cdr (next_k)) * staff_space;
-
- SCM next_r = ly_assoc_chain (ly_symbol2scm ("raise"), next_p);
- Real next_raise = 0;
- if (gh_pair_p (next_r) && gh_number_p (ly_cdr (next_r)))
- next_raise = gh_scm2double (ly_cdr (next_r)) * staff_space;
-
- o[Y_AXIS] = next_raise;
-
- if (!m.empty_b ())
- {
- m.translate (o);
- if (mol.empty_b ())
- mol = m;
- else
- {
- if (axis == Y_AXIS && baseline_skip)
- next_kern += baseline_skip - m.extent (Y_AXIS)[UP];
- mol.add_at_edge (axis, axis == X_AXIS ? RIGHT : DOWN, m, next_kern);
- }
- }
- text = ly_cdr (text);
- }
-
- if (extent_b)
- {
-#if 0
- /* Hmm, we're not allowed to change a Molecule's extent? */
- mol.dim_[axis] = extent;
- Molecule::ly_set_molecule_extent_x (mol.self_scm (), gh_int2scm (axis),
- ly_cdr (e));
-#else
- // burp: unpredictable names, these...
- Box b = mol.extent_box ();
- SCM expr = mol.get_expr ();
-
- b[axis] = extent;
- mol = Molecule (b, expr);
-#endif
- }
- 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 ();
-}
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