/*
- font-metric.cc -- implement Font_metric
+ font-metric.cc -- implement Font_metric
source file of the GNU LilyPond music typesetter
(c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
Mats Bengtsson <matsb@s3.kth.se> (the ugly TeX parsing in text_dimension)
- */
+*/
+
+#include "font-metric.hh"
#include <math.h>
-#include <ctype.h>
+#include <cctype>
+#include "dimensions.hh"
+#include "modified-font-metric.hh"
+#include "open-type-font.hh"
+#include "stencil.hh"
#include "virtual-methods.hh"
#include "warn.hh"
-#include "stencil.hh"
+
#include "ly-smobs.icc"
-#include "font-metric.hh"
-#include "string.hh"
Real
Font_metric::design_size () const
{
- return 1.0;
+ return 1.0 * point_constant;
}
-String
-Font_metric::coding_scheme () const
-{
- return "FontSpecific";
-}
-Box
-Font_metric::text_dimension (String text) const
+Stencil
+Font_metric::find_by_name (String s) const
{
- Interval ydims;
- Real w=0.0;
+ s.substitute_char ('-', "M");
+ int idx = name_to_index (s);
+ Box b;
- for (int i = 0; i < text.length (); i++)
+ SCM expr = SCM_EOL;
+ if (idx >= 0)
{
-
- switch (text[i])
- {
- case '\\':
- // 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.
- i--; // Compensate for the increment in the outer loop!
- break;
- case '{': // Skip '{' and '}'
- case '}':
- break;
-
- default:
- 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_ascii_char ((unsigned char)'x');
-
- w += b[X_AXIS].length ();
- ydims.unite (b[Y_AXIS]);
- break;
- }
+ expr = scm_list_3 (ly_symbol2scm ("named-glyph"),
+ self_scm (),
+ scm_makfrom0str (s.to_str0 ())
+ );
+ b = get_indexed_char (idx);
}
- if (ydims.is_empty ())
- ydims = Interval (0, 0);
-
- return Box (Interval (0, w), ydims);
+
+ Stencil q (b, expr);
+ return q;
}
-
Font_metric::Font_metric ()
{
description_ = SCM_EOL;
}
Offset
-Font_metric::get_indexed_wxwy (int )const
+Font_metric::get_indexed_wxwy (int) const
{
return Offset (0, 0);
}
void
-Font_metric::derived_mark ()const
+Font_metric::derived_mark () const
{
}
IMPLEMENT_DEFAULT_EQUAL_P (Font_metric);
IMPLEMENT_TYPE_P (Font_metric, "ly:font-metric?");
-Stencil
-Font_metric::find_by_name (String) const
-{
- 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, @code{#f} is returned. ")
+SCM
+Font_metric::font_file_name () const
{
- 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 ();
+ return scm_car (description_);
}
-LY_DEFINE (ly_get_glyph, "ly:get-glyph",
- 2, 0, 0,
- (SCM font, SCM index),
- "Retrieve a Stencil for the glyph numbered @var{index} "
- "in @var{font}.")
+String
+Font_metric::font_name () const
{
- 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 ();
+ String s ("unknown");
+ return s;
}
-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]));
-}
+#include "afm.hh"
-LY_DEFINE (ly_font_name,"ly:font-name",
- 1, 0, 0,
- (SCM font),
- "Given the font metric @var{font}, "
- "return the corresponding file name.")
-{
- Font_metric *fm = unsmob_metrics (font);
- SCM_ASSERT_TYPE (fm, font, SCM_ARG1, __FUNCTION__, "font-metric");
- return gh_car (fm->description_);
-}
-LY_DEFINE (ly_font_magnification,"ly:font-magnification", 1 , 0, 0,
- (SCM font),
- "Given the font metric @var{font}, return the "
- "magnification, relative to the current outputscale.")
+int
+Font_metric::index_to_ascii (int i) const
{
- Font_metric *fm = unsmob_metrics (font);
- SCM_ASSERT_TYPE (fm, font, SCM_ARG1, __FUNCTION__, "font-metric");
- return gh_cdr (fm->description_);
+ return i;
}
-LY_DEFINE (ly_font_design_size,"ly:font-design-size", 1 , 0, 0,
- (SCM font),
- "Given the font metric @var{font}, return the "
- "design size, relative to the current outputscale.")
+unsigned
+Font_metric::index_to_charcode (int i) const
{
- Font_metric *fm = unsmob_metrics (font);
- SCM_ASSERT_TYPE (fm, font, SCM_ARG1, __FUNCTION__, "font-metric");
- return gh_double2scm (fm->design_size ());
+ return (unsigned) index_to_ascii (i);
}
Stencil
Font_metric::get_ascii_char_stencil (int code) const
{
- SCM at = scm_list_2 (ly_symbol2scm ("char"), gh_int2scm (code));
- at = fontify_atom (this, at);
+ SCM at = scm_list_3 (ly_symbol2scm ("char"), self_scm (),
+ scm_int2num (code));
Box b = get_ascii_char (code);
return Stencil (b, at);
}
Stencil
Font_metric::get_indexed_char_stencil (int code) const
{
- SCM at = scm_list_2 (ly_symbol2scm ("char"), gh_int2scm (code));
- at = fontify_atom (this, at);
+ int idx = index_to_ascii (code);
+ SCM at = scm_list_3 (ly_symbol2scm ("char"), self_scm (), scm_int2num (idx));
Box b = get_indexed_char (code);
return Stencil (b, at);
}
-int
-/*Font_metric::*/
-get_encoded_index (Font_metric *m, String input_coding, int code)
+
+Offset
+Font_metric::attachment_point (String) const
+{
+ return Offset (0, 0);
+}
+
+SCM
+Font_metric::sub_fonts () const
+{
+ return SCM_EOL;
+}
+
+Stencil
+Font_metric::text_stencil (String str) const
{
- String font_coding = m->coding_scheme ();
- if (font_coding == input_coding)
- return code;
- SCM s = scm_call_3 (ly_scheme_function ("encoded-index"),
- scm_makfrom0str (input_coding.to_str0 ()),
- scm_makfrom0str (font_coding.to_str0 ()),
- scm_int2num (code));
- return gh_scm2int (s);
+ SCM lst = scm_list_3 (ly_symbol2scm ("text"),
+ this->self_scm (),
+ scm_makfrom0str (str.to_str0 ()));
+
+ Box b = text_dimension (str);
+ return Stencil (b, lst);
+}
+
+Box
+Font_metric::text_dimension (String) const
+{
+ return Box (Interval (0,0), Interval (0,0));
}
+
projects / lilypond.git / blobdiff