source file of the GNU LilyPond music typesetter
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <math.h>
-
+#include "dimensions.hh"
+#include "output-def.hh"
+#include "modified-font-metric.hh"
+#include "pango-font.hh"
#include "all-font-metrics.hh"
-#include "string.hh"
-#include "misc.hh"
-#include "paper-def.hh"
-#include "warn.hh"
-#include "scaled-font-metric.hh"
-#include "main.hh"
-#include "scm-hash.hh"
-#include "file-results.hh" // urg? header_global
-#include "paper-outputter.hh"
-
-/*
- This is an almost empty thing. The only substantial thing this class
- handles, is scaling up and down to real-world dimensions (internally
- dimensions are against global staff-space.)
-
- */
-Paper_def::Paper_def ()
-{
-}
-
-Paper_def::~Paper_def ()
-{
-}
-
-Paper_def::Paper_def (Paper_def const&src)
- : Music_output_def (src)
-{
-}
-
Real
-Paper_def::get_var (String s) const
+output_scale (Output_def *od)
{
- return get_realvar (ly_symbol2scm (s.to_str0 ()));
+ return scm_to_double (od->lookup_variable (ly_symbol2scm ("output-scale")));
}
SCM
-Paper_def::get_scmvar (String s) const
+get_font_table (Output_def *def)
{
- return variable_tab_->get (ly_symbol2scm (s.to_str0 ()));
+ SCM font_table = def->lookup_variable (ly_symbol2scm ("scaled-fonts"));
+ if (scm_hash_table_p (font_table) != SCM_BOOL_T)
+ {
+ font_table = scm_c_make_hash_table (11);
+ def->set_variable (ly_symbol2scm ("scaled-fonts"), font_table);
+ }
+ return font_table;
}
-
SCM
-Paper_def::get_scmvar_scm (SCM sym) const
-{
- return gh_double2scm (get_realvar (sym));
-}
-
-Real
-Paper_def::get_realvar (SCM s) const
+get_pango_font_table (Output_def *def)
{
- SCM val ;
- if (!variable_tab_->try_retrieve (s, &val))
- {
- programming_error ("unknown paper variable: " + ly_symbol2string (s));
- return 0.0;
- }
-
- Real sc = 1.0;
- SCM ssc;
- if (variable_tab_->try_retrieve (ly_symbol2scm ("outputscale"), &ssc))
- {
- sc = gh_scm2double (ssc);
- }
- if (gh_number_p (val))
+ SCM font_table = def->lookup_variable (ly_symbol2scm ("pango-fonts"));
+ if (scm_hash_table_p (font_table) != SCM_BOOL_T)
{
- return gh_scm2double (val) / sc;
- }
- else
- {
- programming_error ("not a real variable");
- return 0.0;
+ font_table = scm_c_make_hash_table (11);
+ def->set_variable (ly_symbol2scm ("pango-fonts"), font_table);
}
+ return font_table;
}
-/*
- FIXME. This is broken until we have a generic way of
- putting lists inside the \paper block.
- */
-Interval
-Paper_def::line_dimensions_int (int n) const
+/* TODO: should add nesting for Output_def here too. */
+Font_metric *
+find_scaled_font (Output_def *mod, Font_metric *f, Real m)
{
- Real lw = get_var ("linewidth");
- Real ind = n? 0.0:get_var ("indent");
-
- return Interval (ind, lw);
-}
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
+ Real lookup_mag = m / output_scale (mod);
+ SCM font_table = get_font_table (mod);
+ SCM sizes = scm_hashq_ref (font_table, f->self_scm (), SCM_EOL);
+ SCM handle = scm_assoc (scm_from_double (lookup_mag), sizes);
+ if (scm_is_pair (handle))
+ return unsmob_metrics (scm_cdr (handle));
-int Paper_def::score_count_ = 0;
+ SCM val = Modified_font_metric::make_scaled_font_metric (f, lookup_mag);
-int
-Paper_def::get_next_score_count () const
-{
- return score_count_ ++;
+ sizes = scm_acons (scm_from_double (lookup_mag), val, sizes);
+ unsmob_metrics (val)->unprotect ();
+ scm_hashq_set_x (font_table, f->self_scm (), sizes);
+ return unsmob_metrics (val);
}
-void
-Paper_def::reset_score_count ()
+Font_metric *
+find_pango_font (Output_def *layout, SCM descr, Real factor)
{
- score_count_ = 0;
-}
+ if (layout->parent_)
+ return find_pango_font (layout->parent_, descr, factor);
+ SCM table = get_pango_font_table (layout);
+ SCM sizes = scm_hash_ref (table, descr, SCM_EOL);
+ SCM size_key = scm_from_double (factor);
+ SCM handle = scm_assoc (size_key, sizes);
+ if (scm_is_pair (handle))
+ return unsmob_metrics (scm_cdr (handle));
-Paper_outputter*
-Paper_def::get_paper_outputter ()
-{
- String outname = outname_string ();
- progress_indication (_f ("paper output to `%s'...",
- outname == "-" ? String ("<stdout>") : outname));
-
- global_input_file->target_strings_.push (outname);
- Paper_outputter * po = new Paper_outputter (outname);
- Path p = split_path (outname);
- p.ext = "";
- po->basename_ = p.string ();
- return po;
-}
+ PangoFontDescription *description
+ = pango_font_description_from_string (scm_i_string_chars (descr));
+ pango_font_description_set_size (description,
+ gint (factor *
+ pango_font_description_get_size (description)));
-/*
- todo: use symbols and hashtable idx?
-*/
-Font_metric *
-Paper_def::find_font (SCM fn, Real m)
-{
- SCM key = gh_cons (fn, gh_double2scm (m));
- SCM met = scm_assoc (key, scaled_fonts_);
-
- if (gh_pair_p (met))
- return unsmob_metrics (ly_cdr (met));
-
- SCM ssc;
- if (variable_tab_->try_retrieve (ly_symbol2scm ("outputscale"), &ssc))
- {
- m /= gh_scm2double (ssc);
- }
- Font_metric* f = all_fonts_global->find_font (ly_scm2string (fn));
- SCM val = Scaled_font_metric::make_scaled_font_metric (f, m);
- scaled_fonts_ = scm_acons (key, val, scaled_fonts_);
+ Font_metric *fm = all_fonts_global->find_pango_font (description,
+ output_scale (layout));
- scm_gc_unprotect_object (val);
+ pango_font_description_free (description);
+
+ sizes = scm_acons (size_key, fm->self_scm (), sizes);
+ scm_hash_set_x (table, descr, sizes);
- return dynamic_cast<Scaled_font_metric*> (unsmob_metrics (val));
+ return fm;
}
-
-/*
- Return alist to translate internally used fonts back to real-world
- coordinates. */
-SCM
-Paper_def::font_descriptions ()const
+/* TODO: this is a nasty interface. During formatting,
+ the Output_def should be scaled to the output_scale_
+ specified in the toplevel Output_def. */
+Output_def *
+scale_output_def (Output_def *o, Real amount)
{
- SCM l = SCM_EOL;
- for (SCM s = scaled_fonts_; gh_pair_p (s); s = ly_cdr (s))
- {
- SCM desc = ly_caar (s);
- SCM mdesc = unsmob_metrics (ly_cdar (s))->description_;
+ SCM proc = ly_lily_module_constant ("scale-layout");
+ SCM new_pap = scm_call_2 (proc, o->self_scm (), scm_double2num (amount));
- l = gh_cons (gh_cons (mdesc, desc), l);
- }
- return l;
+ o = unsmob_output_def (new_pap);
+ o->protect ();
+ return o;
}
+
projects / lilypond.git / blobdiff