source file of the GNU LilyPond music typesetter
- (c) 1999--2000 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 "warn.hh"
#define format_str String_convert::form_str
-#define FIX_UNITY (1 << 20)
+#define FIX_UNITY \
+ (1 << 20)
static const Real fix_to_real (Fix f);
-Tex_font_metric_reader::Tex_font_metric_reader (Tex_font_metric* fp, String name)
+Tex_font_metric_reader::Tex_font_metric_reader (String name)
: input_ (name)
{
- tfm_l_=fp;
- tfm_l_->clear (TFM_SIZE);
+
+ for (int i=0; i < TFM_SIZE; i++)
+ ascii_to_metric_idx_.push (-1);
+
read_header ();
read_params ();
read_char_metrics ();
}
-Tex_font_metric *
-Tex_font_metric_reader::read_file (String name)
-{
- Tex_font_metric * tfmp = new Tex_font_metric;
- Tex_font_metric_reader tfm_reader (tfmp, name);
-
- return tfmp;
-}
-
-
-
-
static const Real
fix_to_real (Fix f)
{
Real
Tex_font_metric_reader::get_U32_fix_scaled_f ()
{
- return get_U32_fix_f () * tfm_l_->info_.design_size;
+ return get_U32_fix_f () * info_.design_size;
}
String
Tex_font_metric_reader::read_header ()
{
U16 file_length = input_.get_U16 ();
- (void) file_length;
+ (void) file_length;
U16 header_length = input_.get_U16 ();
- tfm_l_->info_.first_charcode = input_.get_U16 ();
- tfm_l_->info_.last_charcode = input_.get_U16 ();
+ info_.first_charcode = input_.get_U16 ();
+ info_.last_charcode = input_.get_U16 ();
U16 width_word_count = input_.get_U16 ();
U16 height_word_count = input_.get_U16 ();
U16 depth_word_count = input_.get_U16 ();
U16 italic_correction_word_count = input_.get_U16 ();
U16 lig_kern_word_count = input_.get_U16 ();
U16 kern_word_count = input_.get_U16 ();
- (void)kern_word_count;
+ (void)kern_word_count;
U16 extensible_word_count = input_.get_U16 ();
- (void)extensible_word_count;
+ (void)extensible_word_count;
- tfm_l_->header_.param_word_count = input_.get_U16 ();
- tfm_l_->info_.parameter_count = tfm_l_->header_.param_word_count;
-
- tfm_l_->header_.char_info_pos = (6 + header_length) * 4;
- tfm_l_->header_.width_pos = tfm_l_->header_.char_info_pos
- + (tfm_l_->info_.last_charcode
- - tfm_l_->info_.first_charcode + 1) * 4;
- tfm_l_->header_.height_pos = tfm_l_->header_.width_pos + width_word_count * 4;
- tfm_l_->header_.depth_pos = tfm_l_->header_.height_pos + height_word_count * 4;
- tfm_l_->header_.italic_correction_pos = tfm_l_->header_.depth_pos
+ header_.param_word_count = input_.get_U16 ();
+ info_.parameter_count = header_.param_word_count;
+
+ header_.char_info_pos = (6 + header_length) * 4;
+ header_.width_pos = header_.char_info_pos
+ + (info_.last_charcode
+ - info_.first_charcode + 1) * 4;
+ header_.height_pos = header_.width_pos + width_word_count * 4;
+ header_.depth_pos = header_.height_pos + height_word_count * 4;
+ header_.italic_correction_pos = header_.depth_pos
+ depth_word_count * 4;
- tfm_l_->header_.lig_kern_pos = tfm_l_->header_.italic_correction_pos
+ header_.lig_kern_pos = header_.italic_correction_pos
+ italic_correction_word_count * 4;
- tfm_l_->header_.kern_pos = tfm_l_->header_.lig_kern_pos + lig_kern_word_count * 4;
+ header_.kern_pos = header_.lig_kern_pos + lig_kern_word_count * 4;
/* We don't care about the extensible table. */
if (header_length < 2)
- error (_f ("TFM header of `%s' has only %u word(s)",
+ error (_f ("TFM header of `%s' has only %u word (s)",
input_.name_str ().ch_C (), header_length));
- tfm_l_->info_.checksum = input_.get_U32 ();
- tfm_l_->info_.design_size = get_U32_fix_f ();
+ info_.checksum = input_.get_U32 ();
+ info_.design_size = get_U32_fix_f ();
/* Although the coding scheme might be interesting to the caller, the
font family and face byte probably aren't. So we don't read them. */
- tfm_l_->info_.coding_scheme = header_length > 2
+ info_.coding_scheme = header_length > 2
? get_bcpl_str () : "unspecified";
- DEBUG_OUT << format_str ("TFM checksum = %u, design_size = %fpt, coding scheme = `%s'.\n",
- tfm_l_->info_.checksum,
- tfm_l_->info_.design_size,
- tfm_l_->info_.coding_scheme.ch_C ());
}
/* Although TFM files are only usable by TeX if they have at least seven
Tex_font_metric_reader::read_params ()
{
/* If we have no font parameters at all, we're done. */
- if (tfm_l_->header_.param_word_count == 0)
+ if (header_.param_word_count == 0)
return;
//brrr
/* Move to the beginning of the parameter table in the file. */
- input_.seek_ch_C (-4 * tfm_l_->header_.param_word_count);
+ input_.seek_ch_C (-4 * header_.param_word_count);
/* It's unlikely but possible that this TFM file has more fontdimens
than we can deal with. */
- if (tfm_l_->header_.param_word_count > TFM_MAX_FONTDIMENS)
+ if (header_.param_word_count > TFM_MAX_FONTDIMENS)
{
warning (_f ("%s: TFM file has %u parameters, which is more than the %u I can handle",
input_.name_str ().ch_C (),
- tfm_l_->header_.param_word_count,
+ header_.param_word_count,
TFM_MAX_FONTDIMENS));
- tfm_l_->header_.param_word_count = TFM_MAX_FONTDIMENS;
+ header_.param_word_count = TFM_MAX_FONTDIMENS;
}
/* The first parameter is different than all the rest, because it
isn't scaled by the design size. */
- tfm_l_->info_.parameters[(TFM_SLANT_PARAMETER) - 1] = get_U32_fix_f ();
+ info_.parameters[ (TFM_SLANT_PARAMETER) - 1] = get_U32_fix_f ();
- for (Char_code i = 2; i <= tfm_l_->header_.param_word_count; i++)
- tfm_l_->info_.parameters[i - 1] = get_U32_fix_scaled_f ();
+ for (Char_code i = 2; i <= header_.param_word_count; i++)
+ info_.parameters[i - 1] = get_U32_fix_scaled_f ();
-#ifdef PRINT
- for (Char_code i = 1; i <= tfm_l_->header_.param_word_count; i++)
- DEBUG_OUT << format_str ("TFM parameter %d: %.3f", i, tfm_l_->info_.parameters[i - 1]);
-#endif
}
/* Read every character in the TFM file, storing the result in the
void
Tex_font_metric_reader::read_char_metrics ()
{
- for (int i = tfm_l_->info_.first_charcode; i <= tfm_l_->info_.last_charcode; i++)
+ for (int i = info_.first_charcode; i <= info_.last_charcode; i++)
{
Tex_font_char_metric tfm_char = read_char_metric (i);
if (tfm_char.exists_b_)
- tfm_l_->ascii_to_metric_idx_[tfm_char.code_] = tfm_l_->char_metrics_.size ();
- tfm_l_->char_metrics_.push (tfm_char);
+ ascii_to_metric_idx_[tfm_char.code_] = char_metrics_.size ();
+ char_metrics_.push (tfm_char);
}
}
/* If the character is outside the declared bounds in the file, don't
try to read it. */
- if (code < tfm_l_->info_.first_charcode || code > tfm_l_->info_.last_charcode)
+ if (code < info_.first_charcode || code > info_.last_charcode)
return tfm_char;
//brr
/* Move to the appropriate place in the `char_info' array. */
- input_.seek_ch_C (tfm_l_->header_.char_info_pos + (code - tfm_l_->info_.first_charcode) * 4);
+ input_.seek_ch_C (header_.char_info_pos + (code - info_.first_charcode) * 4);
/* Read the character. */
tfm_char = read_char ();
#define GET_CHAR_DIMEN(d) \
if (d##_index != 0) \
{ \
- input_.seek_ch_C (tfm_l_->header_.##d##_pos + d##_index*4); \
+ input_.seek_ch_C (header_. d##_pos + d##_index*4); \
tfm_char.d##_fix_ = input_.get_U32 (); \
tfm_char.d##_ = fix_to_real (tfm_char.d##_fix_) \
- * tfm_l_->info_.design_size; \
+ * info_.design_size; \
}
GET_CHAR_DIMEN (width);
`char_info_word'). */
tfm_char.exists_b_ = width_index != 0;
-#ifdef PRINT
- DEBUG_OUT << format_str (" width = %f, height = %f, ",
- tfm_char.width_, tfm_char.height_);
- DEBUG_OUT << format_str ("depth = %f, ic = %f.\n",
- tfm_char.depth, tfm_char.italic_correction);
-#endif
-
if (tag == 1)
{
- input_.seek_ch_C (tfm_l_->header_.lig_kern_pos + remainder * 4);
+ input_.seek_ch_C (header_.lig_kern_pos + remainder * 4);
read_lig_kern_program (&tfm_char.ligature_arr_, &tfm_char.kern_arr_);
}
bool kern_step_b = input_.get_U8 () >= KERN_FLAG;
U8 remainder = input_.get_U8 ();
-#ifdef PRINT
- DEBUG_OUT << format_str (" if next = %u (%c), ", next_char, next_char);
-#endif
if (kern_step_b)
{
kern_element.character = next_char;
char const* old_pos = input_.pos_ch_C ();
- input_.seek_ch_C (tfm_l_->header_.kern_pos + remainder * 4);
+ input_.seek_ch_C (header_.kern_pos + remainder * 4);
kern_element.kern = get_U32_fix_scaled_f ();
input_.set_pos (old_pos);
kern_arr_p->push (kern_element);
-#ifdef PRINT
- DEBUG_OUT << format_str ("kern %f.\n", kern_element.kern);
-#endif
}
else
{
ligature_element.ligature = remainder;
ligature_arr_p->push (ligature_element);
-#ifdef PRINT
- DEBUG_OUT format_str ("ligature %d (hex %x).\n",
- ligature_element.ligature,
- ligature_element.ligature);
-#endif
}
} while (!end_b);
}
projects / lilypond.git / blobdiff