/*
- tfm.cc -- implement Tex_font_metric
+ tfm.cc -- implement Tex_font_metric
source file of the GNU LilyPond music typesetter
- (c) 1999 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1999--2002 Jan Nieuwenhuizen <janneke@gnu.org>
some code shamelessly copied from GNU fontutils-0.6/tfm/tfm_input.c
#include "string-convert.hh"
#include "debug.hh"
#include "warn.hh"
+#include "dimensions.hh"
Box
Tex_font_char_metric::dimensions () const
{
+ if (!exists_b_)
+ {
+ Box b;
+ b.set_empty ();
+ return b;
+ }
+
Real d = -depth_;
- return Box (Interval (0, width_),Interval ( d <? height_, d >? height_));
+
+ Real point_constant = 1 PT;
+
+ return Box (Interval (0, width_*point_constant ),
+ Interval ((d <? height_)*point_constant,
+ (d >? height_)*point_constant));
}
Tex_font_char_metric::Tex_font_char_metric ()
{
exists_b_ = false;
code_ = 0;;
- width_ = height_ = depth_ = italic_correction_ = 0;
- width_fix_ = height_fix_ = depth_fix_ = italic_correction_fix_ = 0;
+ width_ = 0;
+ height_ = 0;
+ depth_ = 0;
+ italic_correction_ = 0;
+ width_fix_ = 0;
+ height_fix_ = 0;
+ depth_fix_ = 0;
+ italic_correction_fix_ = 0;
}
#define APPEND_CHAR_METRIC_ELT(k) outstr += to_str (#k) + " " + to_str (k ## _) + "; "
{
}
+
static Tex_font_char_metric dummy_static_char_metric;
-Tex_font_char_metric const &
+Tex_font_char_metric const *
Tex_font_metric::find_ascii (int ascii, bool warn) const
{
- if (ascii < ascii_to_metric_idx_.size() && ascii_to_metric_idx_[ascii] >= 0)
- return char_metrics_[ascii_to_metric_idx_ [ascii]];
+ if (ascii < ascii_to_metric_idx_.size () && ascii_to_metric_idx_[ascii] >= 0)
+ return & char_metrics_[ascii_to_metric_idx_ [ascii]];
else if (warn)
-
{
- warning (_f ("can't find ascii character `%d'", ascii));
+ warning (_f ("can't find ascii character: %d", ascii));
+ }
+ return &dummy_static_char_metric;
+}
+
+/*
+ UGH: glyphs need not be consecutive in TFM.
+ */
+int
+Tex_font_metric::count () const
+{
+ for (int i = ascii_to_metric_idx_.size (); i--;)
+ {
+ if (ascii_to_metric_idx_[i] != -1)
+ return i + 1;
}
- return dummy_static_char_metric;
+ return 0;
}
-Character_metric*
-Tex_font_metric::get_char (int a, bool w) const
+Box
+Tex_font_metric::get_char (int a) const
{
- return &find_ascii (a, w);
+ Box b = find_ascii (a)->dimensions () ;
+ return b;
}
return outstr;
}
-void
-Tex_font_metric::clear (int n)
-{
- for (int i=0; i < n; i++)
- ascii_to_metric_idx_.push (-1);
-}
-void
-Tex_font_metric::read_file (String name)
+
+
+SCM
+Tex_font_metric::make_tfm (String fn)
{
- Tex_font_metric_reader tfm_reader (name);
- *this = tfm_reader.read_tfm ();
-}
+ Tex_font_metric * tfm_p = new Tex_font_metric;
+ Tex_font_metric_reader reader (fn);
+ tfm_p->info_ = reader.info_;
+ tfm_p->header_ = reader.header_;
+ tfm_p->char_metrics_ = reader.char_metrics_;
+ tfm_p->ascii_to_metric_idx_ = reader.ascii_to_metric_idx_;
+
+ return tfm_p->self_scm ();
+}