source file of the GNU LilyPond music typesetter
- (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
+ (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+
+ Mats Bengtsson <matsb@s3.kth.se> (the ugly TeX parsing in text_dimension)
*/
#include <math.h>
#include <ctype.h>
-
+#include "warn.hh"
+#include "molecule.hh"
+#include "ly-smobs.icc"
#include "font-metric.hh"
+#include "string.hh"
Box
Font_metric::text_dimension (String text) const
for (int i = 0; i < text.length_i (); i++)
{
- if (text[i]=='\\')
+ switch (text[i])
{
- for (i++; (i < text.length_i ()) && isalpha(text[i]); i++)
+ case '\\':
+ for (i++; (i < text.length_i ()) && !isspace(text[i])
+ && text[i]!='{' && text[i]!='}'; i++)
;
// ugh.
i--; // Compensate for the increment in the outer loop!
- }
- else
- {
- Character_metric const *c = get_char ((unsigned char)text[i],false);
-
+ break;
+ case '{': // Skip '{' and '}'
+ case '}':
+ break;
+
+ default:
+ Box b = get_char ((unsigned char)text[i]);
+
// Ugh, use the width of 'x' for unknown characters
- if (c->dimensions()[X_AXIS].length () == 0)
- c = get_char ((unsigned char)'x',false);
+ if (b[X_AXIS].length () == 0)
+ b = get_char ((unsigned char)'x');
- w += c->dimensions()[X_AXIS].length ();
- ydims.unite (c->dimensions()[Y_AXIS]);
+ w += b[X_AXIS].length ();
+ ydims.unite (b[Y_AXIS]);
+ break;
}
}
if (ydims.empty_b ())
}
-Box
-Scaled_font_metric::text_dimension (String t) const
-{
- Real realmag = pow (1.2, magstep_i_);
- Box b (orig_l_->text_dimension (t));
- return Box(b[X_AXIS]* realmag, b[Y_AXIS]*realmag);
+Font_metric::~Font_metric ()
+{
}
+Font_metric::Font_metric ()
+{
+ description_ = SCM_EOL;
-Box
-Character_metric::dimensions () const
+ smobify_self ();
+}
+
+Font_metric::Font_metric (Font_metric const &s)
{
- return Box(Interval(0,0), Interval(0,0));
}
-Font_metric::~Font_metric ()
+
+Box
+Font_metric::get_char (int )const
{
+ return Box (Interval(0,0),Interval (0,0));
}
-Character_metric::~Character_metric()
+
+SCM
+Font_metric::mark_smob (SCM s)
{
+ Font_metric * m = (Font_metric*) SCM_CELL_WORD_1(s);
+ return m->description_;
}
-Character_metric const *
-Font_metric::get_char (int, bool)const
+int
+Font_metric::print_smob (SCM s, SCM port, scm_print_state * )
{
- return 0;
+ Font_metric *m = unsmob_metrics (s);
+ scm_puts ("#<Font_metric ", port);
+ scm_write (m->description_, port);
+ scm_puts (">", port);
+ return 1;
}
-Scaled_font_metric::Scaled_font_metric (Font_metric* m, int s)
+
+IMPLEMENT_UNSMOB (Font_metric, metrics);
+IMPLEMENT_SMOBS (Font_metric);
+IMPLEMENT_DEFAULT_EQUAL_P(Font_metric);
+IMPLEMENT_TYPE_P (Font_metric, "font-metric?");
+
+Molecule
+Font_metric::find_by_name (String) const
{
- magstep_i_ = s;
- orig_l_ = m;
+ Molecule m ;
+ return m;
}
+
SCM
-Font_metric::description () const
+ly_find_glyph_by_name (SCM font, SCM name)
{
- return gh_cons (ly_symbol2scm (name_str_.ch_C()), gh_int2scm (0));
+ if (!unsmob_metrics (font) || !gh_string_p (name))
+ {
+ warning ("ly-find-glyph-by-name: invalid argument.");
+ Molecule m;
+ return m.smobbed_copy ();
+ }
+
+ return unsmob_metrics (font)->find_by_name (ly_scm2string (name)).smobbed_copy ();
}
-SCM
-Scaled_font_metric::description () const
+static void
+font_metric_init ()
{
- SCM od = orig_l_->description ();
- gh_set_cdr_x (od, gh_int2scm (magstep_i_));
- return od;
+ scm_make_gsubr ("ly-find-glyph-by-name", 2 , 0, 0, (Scheme_function_unknown) ly_find_glyph_by_name);
}
+
+ADD_SCM_INIT_FUNC(font_metric_init, font_metric_init);