source file of the GNU LilyPond music typesetter
- (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- Mats Bengtsson <matsb@s3.kth.se> (the ugly TeX parsing in text_dimension)
+ Mats Bengtsson <matsb@s3.kth.se> (the ugly TeX parsing in text_dimension)
*/
#include <math.h>
#include <ctype.h>
-#include "molecule.hh"
+#include "virtual-methods.hh"
+#include "warn.hh"
+#include "stencil.hh"
#include "ly-smobs.icc"
#include "font-metric.hh"
#include "string.hh"
Interval ydims;
Real w=0.0;
- for (int i = 0; i < text.length_i (); i++)
+ for (int i = 0; i < text.length (); i++)
{
switch (text[i])
{
case '\\':
- for (i++; (i < text.length_i ()) && !isspace(text[i])
+ // accent marks use width of base letter
+ if (i +1 < text.length ())
+ {
+ if (text[i+1]=='\'' || text[i+1]=='`' || text[i+1]=='"' ||
+ text[i+1]=='^')
+ {
+ i++;
+ break;
+ }
+ // for string width \\ is a \ and \_ is a _.
+ if (text[i+1]=='\\' || text[i+1]=='_')
+ {
+ break;
+ }
+ }
+
+ for (i++; (i < text.length ()) && !isspace (text[i])
&& text[i]!='{' && text[i]!='}'; i++)
;
// ugh.
break;
default:
- Box b = get_char ((unsigned char)text[i]);
+ Box b = get_ascii_char ((unsigned char)text[i]);
// Ugh, use the width of 'x' for unknown characters
if (b[X_AXIS].length () == 0)
- b = get_char ((unsigned char)'x');
+ b = get_ascii_char ((unsigned char)'x');
w += b[X_AXIS].length ();
ydims.unite (b[Y_AXIS]);
break;
}
}
- if (ydims.empty_b ())
+ if (ydims.is_empty ())
ydims = Interval (0,0);
- return Box(Interval (0, w), ydims);
+ return Box (Interval (0, w), ydims);
}
-Box
-Scaled_font_metric::text_dimension (String t) const
-{
- Box b (orig_l_->text_dimension (t));
-
- b.scale (magnification_f_);
- return b;
-}
Font_metric::~Font_metric ()
{
Font_metric::Font_metric ()
{
description_ = SCM_EOL;
-
+ self_scm_ = SCM_EOL;
smobify_self ();
}
{
}
+int
+Font_metric::count () const
+{
+ return 0;
+}
+
+Box
+Font_metric::get_ascii_char (int) const
+{
+ return Box (Interval (0,0),Interval (0,0));
+}
Box
-Font_metric::get_char (int )const
+Font_metric::get_indexed_char (int k) const
{
- return Box (Interval(0,0),Interval (0,0));
+ return get_ascii_char(k);
}
+int
+Font_metric::name_to_index (String) const
+{
+ return -1;
+}
+
+Offset
+Font_metric::get_indexed_wxwy (int )const
+{
+ return Offset (0,0);
+}
+
+void
+Font_metric::derived_mark ()const
+{
+
+}
+
SCM
Font_metric::mark_smob (SCM s)
{
- Font_metric * m = (Font_metric*) SCM_CELL_WORD_1(s);
+ Font_metric * m = (Font_metric*) SCM_CELL_WORD_1 (s);
+
+ m->derived_mark();
return m->description_;
}
int
-Font_metric::print_smob (SCM s, SCM port, scm_print_state * )
+Font_metric::print_smob (SCM s, SCM port, scm_print_state *)
{
Font_metric *m = unsmob_metrics (s);
- scm_puts ("#<Font_metric ", port);
+ scm_puts ("#<", port);
+ scm_puts (classname (m), port);
+ scm_puts (" ", port);
scm_write (m->description_, port);
scm_puts (">", port);
return 1;
}
-IMPLEMENT_UNSMOB (Font_metric, metrics);
+
IMPLEMENT_SMOBS (Font_metric);
-IMPLEMENT_DEFAULT_EQUAL_P(Font_metric);
-IMPLEMENT_TYPE_P (Font_metric, "font-metric?");
+IMPLEMENT_DEFAULT_EQUAL_P (Font_metric);
+IMPLEMENT_TYPE_P (Font_metric, "ly:font-metric?");
-Molecule
+Stencil
Font_metric::find_by_name (String) const
{
- Molecule m ;
+ Stencil m ;
return m;
}
+LY_DEFINE(ly_find_glyph_by_name, "ly:find-glyph-by-name", 2 , 0, 0,
+ (SCM font, SCM name),
+ "This function retrieves a Stencil for the glyph named @var{name} in "
+"@var{font}. The font must be available as an AFM file. If the glyph "
+"is not found, #f is returned. ")
+{
+ Font_metric *fm = unsmob_metrics (font);
+ SCM_ASSERT_TYPE(fm, font, SCM_ARG1, __FUNCTION__, "font-metric");
+ SCM_ASSERT_TYPE(gh_string_p (name), name, SCM_ARG2, __FUNCTION__, "string");
+
+ Stencil m = fm->find_by_name (ly_scm2string (name));
+ /*
+ TODO: make optional argument for default if not found.
+
+ */
+ return m.smobbed_copy ();
+}
+
+LY_DEFINE(ly_get_glyph, "ly:get-glyph", 2 , 0, 0,
+ (SCM font, SCM index),
+ "This function retrieves a Stencil for the glyph numbered @var{index} in "
+"@var{font}. ")
+{
+ Font_metric *fm = unsmob_metrics (font);
+ SCM_ASSERT_TYPE(fm, font, SCM_ARG1, __FUNCTION__, "font-metric");
+ SCM_ASSERT_TYPE(gh_number_p (index), index, SCM_ARG2, __FUNCTION__, "number");
+
+ return fm->get_ascii_char_stencil (gh_scm2int (index)).smobbed_copy ();
+}
+LY_DEFINE(ly_text_dimension,"ly:text-dimension", 2 , 0, 0,
+ (SCM font, SCM text),
+ "Given the font metric in @var{font} and the string @var{text}, compute "
+"the extents of that text in that font. The return value is a pair of "
+"number-pairs.")
+{
+ Box b;
+ Font_metric *fm = unsmob_metrics (font);
+ SCM_ASSERT_TYPE(fm, font, SCM_ARG1, __FUNCTION__, "font-metric");
+ SCM_ASSERT_TYPE(gh_string_p (text), text, SCM_ARG2, __FUNCTION__, "string");
+
+ b = fm->text_dimension (ly_scm2string (text));
+
+ return gh_cons (ly_interval2scm (b[X_AXIS]), ly_interval2scm(b[Y_AXIS]));
+}
+
+Stencil
+Font_metric::get_ascii_char_stencil (int code) const
+{
+ SCM at = scm_list_n (ly_symbol2scm ("char"), gh_int2scm (code),
+ SCM_UNDEFINED);
+ at = fontify_atom (this, at);
+ Box b = get_ascii_char (code);
+ return Stencil (b, at);
+}
+
+Stencil
+Font_metric::get_indexed_char_stencil (int code) const
+{
+ SCM at = scm_list_n (ly_symbol2scm ("char"), gh_int2scm (code),
+ SCM_UNDEFINED);
+ at = fontify_atom (this, at);
+ Box b = get_indexed_char (code);
+ return Stencil (b, at);
+}
projects / lilypond.git / blobdiff