-/*
- 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--2006 Jan Nieuwenhuizen <janneke@gnu.org>
some code shamelessly copied from GNU fontutils-0.6/tfm/tfm_input.c
- */
+*/
+#include "file-name.hh"
#include "tfm.hh"
#include "tfm-reader.hh"
#include "string-convert.hh"
-#include "debug.hh"
#include "warn.hh"
+#include "dimensions.hh"
-Box
-Tex_font_char_metric::dimensions () const
-{
- Real d = -depth_;
- return Box (Interval (0, width_),Interval ( d <? height_, d >? height_));
-}
+static Tex_font_char_metric dummy_static_char_metric;
Tex_font_char_metric::Tex_font_char_metric ()
{
- exists_b_ = false;
+ exists_ = 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 ## _) + "; "
-
-String
-Tex_font_char_metric::str () const
+Box
+Tex_font_char_metric::dimensions () const
{
- String outstr ;
-
- APPEND_CHAR_METRIC_ELT (exists_b);
- APPEND_CHAR_METRIC_ELT (code);
- APPEND_CHAR_METRIC_ELT (width);
- APPEND_CHAR_METRIC_ELT (height);
- APPEND_CHAR_METRIC_ELT (depth);
- APPEND_CHAR_METRIC_ELT (italic_correction);
-
- return outstr + "\n";
+ if (!exists_)
+ {
+ Box b;
+ b.set_empty ();
+ return b;
+ }
+
+ Real d = -depth_;
+ Real point_constant = 1 PT;
+
+ return Box (Interval (0, width_ * point_constant),
+ Interval (min (d, height_) * point_constant,
+ max (d, height_) * point_constant));
}
Tex_font_metric::Tex_font_metric ()
{
+ encoding_table_ = SCM_EOL;
}
-static Tex_font_char_metric dummy_static_char_metric;
+void
+Tex_font_metric::derived_mark () const
+{
+ scm_gc_mark (encoding_table_);
+}
-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 >= 0 && 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));
+ return &dummy_static_char_metric;
+}
- {
- 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 0;
}
-Character_metric const*
-Tex_font_metric::get_char (int a, bool w) const
+Box
+Tex_font_metric::get_ascii_char (int a) const
{
- return &find_ascii (a, w);
+ Box b = find_ascii (a)->dimensions ();
+ return b;
}
+SCM
+Tex_font_metric::make_tfm (String file_name)
+{
+ Tex_font_metric *tfm = new Tex_font_metric;
+ Tex_font_metric_reader reader (file_name);
+
+ tfm->info_ = reader.info_;
+ tfm->header_ = reader.header_;
+ tfm->char_metrics_ = reader.char_metrics_;
+ tfm->ascii_to_metric_idx_ = reader.ascii_to_metric_idx_;
-String
-Tex_font_metric::str () const
+ File_name fn (file_name);
+ tfm->font_name_ = fn.base_;
+ return tfm->self_scm ();
+}
+
+Tfm_info const &
+Tex_font_metric::info () const
{
- String outstr;
- for (int i=0; i < char_metrics_.size (); i++)
- outstr += char_metrics_[i].str ();
-
- return outstr;
+ return info_;
}
-void
-Tex_font_metric::clear (int n)
+Real
+Tex_font_metric::design_size () const
{
- for (int i=0; i < n; i++)
- ascii_to_metric_idx_.push (-1);
+ return info_.design_size * point_constant;
}
-void
-Tex_font_metric::read_file (String name)
+String
+Tex_font_metric::font_name () const
{
- Tex_font_metric_reader tfm_reader (name);
- *this = tfm_reader.read_tfm ();
+ return font_name_;
}
+int
+Tex_font_metric::name_to_index (String) const
+{
+ assert (false);
+ return 0;
+}