added support for getting ascent/descent size info for ps fonts -- Peter Speck

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@521 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/libraries/afm/compile_afm.pl b/libraries/afm/compile_afm.pl
index b53d3d4..efcf5dd 100644 (file)
--- a/libraries/afm/compile_afm.pl
+++ b/libraries/afm/compile_afm.pl
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl -w
+#!/usr/bin/perl -w
 
 require 5.005;
 use strict;
@@ -63,11 +63,15 @@ sub process_font
   $fi{FontSpecificUnicodeNameToChar} = {};
   $fi{filename} = $fn;
   $fi{filename} =~ s/.*\///;
+  $fi{Ascender} = 0;
+  $fi{Descender} = 0;
   open(FH, $fn) || die "Can't open $fn\n";
   print STDERR "Reads global font info\n" if $q;
   while (<FH>) {
     chomp;
     next if /^\s*$/ || /^\s*#/;
+    $fi{Ascender} = $1 if /^Ascender\s+(-?\d+)/;
+    $fi{Descender} = $1 if /^Descender\s+(-?\d+)/;
     last if /^StartCharMetrics/;
     next unless (/^(\S+)\s+(\S(.*\S)?)/);
     my $id = $1;
@@ -244,8 +248,8 @@ sub write_font
      $kerning_data_count + 2 * $highchars_count +
      3 * 2 * $ligatures_count;
   $info_code .= $indent1 . "{ /* $$fiR{filename}   $packedSize bytes */\n";
-    $info_code .= $i2 . "\"$$fiR{AfmFontName}\",";
-    $info_code .= " \"$$fiR{AfmFullName}\",\n";
+    $info_code .= $i2 . "\"$$fiR{AfmFontName}\", \"$$fiR{AfmFullName}\",\n";
+    $info_code .= $i2 . $$fiR{Ascender} . ", " . $$fiR{Descender} . ",\n";
     $info_code .= $i2 . $$fiR{widthsACName} . ",\n";
     $info_code .= $i2 . $$fiR{kerning_indexACName} . ",\n";
     $info_code .= $i2 . $$fiR{kerning_dataACName} . ",\n";
@@ -448,7 +452,7 @@ sub main
   print CFILE ${$font_code{$_}}{TABLES} foreach @fonts;
   print CFILE "const afm_fontinfo afm_fontinfolist[] = {\n";
   print CFILE ${$font_code{$_}}{INFO} foreach @fonts;
-  print CFILE $indent1 . "{ 0, 0, 0 }\n";
+  print CFILE $indent1 . "{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }\n";
   print CFILE $indent0 . "};\n";
   print CFILE $indent0 . "const int afm_fontinfo_count = ",
     ($#fonts + 1), ";\n";

diff --git a/src/rrd_afm.c b/src/rrd_afm.c
index 2b7e343..5bf6e91 100644 (file)
--- a/src/rrd_afm.c
+++ b/src/rrd_afm.c
@@ -73,6 +73,18 @@ const char *afm_get_font_postscript_name(const char* font)
   return p ? p->postscript_name : "Helvetica";
 }
 
+double afm_get_ascender(const char* font, double size)
+{
+  const afm_fontinfo *p = afm_findfont(font);
+  return p ? p->ascender : 10; /* just a guess to avoid really bad design if we don't know the font */
+}
+
+double afm_get_descender(const char* font, double size)
+{
+  const afm_fontinfo *p = afm_findfont(font);
+  return p ? p->descender : 4; /* just a guess to avoid really bad design if we don't know the font */
+}
+
 static int afm_find_char_index(const afm_fontinfo *fontinfo,
     afm_cunicode ch1)
 {

diff --git a/src/rrd_afm.h b/src/rrd_afm.h
index 2ff9d06..6a59318 100644 (file)
--- a/src/rrd_afm.h
+++ b/src/rrd_afm.h
@@ -12,6 +12,9 @@
 double afm_get_text_width ( double start, const char* font, double size,
                            double tabwidth, const char* text);
 
+double afm_get_ascender(const char* font, double size);
+double afm_get_descender(const char* font, double size);
+
 /* get postscript name from fullname or postscript name */
 const char *afm_get_font_postscript_name ( const char* font);
 

diff --git a/src/rrd_afm_data.c b/src/rrd_afm_data.c
index 39fb43e..f5805fd 100644 (file)
--- a/src/rrd_afm_data.c
+++ b/src/rrd_afm_data.c
@@ -3223,6 +3223,7 @@ static afm_cunicode afm_Times_Roman_ligatures[] = { /* 3 */
 const afm_fontinfo afm_fontinfolist[] = {
   { /* Courier.afm   761 bytes */
       "Courier", "Courier",
+      629, -157,
       afm_Courier_widths,
       NULL,
       NULL,
@@ -3230,6 +3231,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Courier_ligatures, 1},
   { /* Courier-Bold.afm   761 bytes */
       "Courier-Bold", "Courier Bold",
+      629, -157,
       afm_Courier_Bold_widths,
       NULL,
       NULL,
@@ -3237,6 +3239,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Courier_Bold_ligatures, 1},
   { /* Courier-BoldOblique.afm   761 bytes */
       "Courier-BoldOblique", "Courier Bold Oblique",
+      629, -157,
       afm_Courier_BoldOblique_widths,
       NULL,
       NULL,
@@ -3244,6 +3247,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Courier_BoldOblique_ligatures, 1},
   { /* Courier-Oblique.afm   761 bytes */
       "Courier-Oblique", "Courier Oblique",
+      629, -157,
       afm_Courier_Oblique_widths,
       NULL,
       NULL,
@@ -3251,6 +3255,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Courier_Oblique_ligatures, 1},
   { /* Helvetica.afm   7841 bytes */
       "Helvetica", "Helvetica",
+      718, -207,
       afm_Helvetica_widths,
       afm_Helvetica_kerning_index,
       afm_Helvetica_kerning_data,
@@ -3258,6 +3263,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Helvetica_ligatures, 1},
   { /* Helvetica-Bold.afm   7336 bytes */
       "Helvetica-Bold", "Helvetica Bold",
+      718, -207,
       afm_Helvetica_Bold_widths,
       afm_Helvetica_Bold_kerning_index,
       afm_Helvetica_Bold_kerning_data,
@@ -3265,6 +3271,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Helvetica_Bold_ligatures, 1},
   { /* Helvetica-BoldOblique.afm   7336 bytes */
       "Helvetica-BoldOblique", "Helvetica Bold Oblique",
+      718, -207,
       afm_Helvetica_BoldOblique_widths,
       afm_Helvetica_BoldOblique_kerning_index,
       afm_Helvetica_BoldOblique_kerning_data,
@@ -3272,6 +3279,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Helvetica_BoldOblique_ligatures, 1},
   { /* Helvetica-Oblique.afm   7841 bytes */
       "Helvetica-Oblique", "Helvetica Oblique",
+      718, -207,
       afm_Helvetica_Oblique_widths,
       afm_Helvetica_Oblique_kerning_index,
       afm_Helvetica_Oblique_kerning_data,
@@ -3279,6 +3287,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Helvetica_Oblique_ligatures, 1},
   { /* ZapfDingbats.afm   416 bytes */
       "ZapfDingbats", "ITC Zapf Dingbats",
+      0, 0,
       afm_ZapfDingbats_widths,
       NULL,
       NULL,
@@ -3286,6 +3295,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       NULL, 0},
   { /* Symbol.afm   563 bytes */
       "Symbol", "Symbol",
+      0, 0,
       afm_Symbol_widths,
       NULL,
       NULL,
@@ -3293,6 +3303,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       NULL, 0},
   { /* Times-Bold.afm   6761 bytes */
       "Times-Bold", "Times Bold",
+      683, -217,
       afm_Times_Bold_widths,
       afm_Times_Bold_kerning_index,
       afm_Times_Bold_kerning_data,
@@ -3300,6 +3311,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Times_Bold_ligatures, 1},
   { /* Times-BoldItalic.afm   6270 bytes */
       "Times-BoldItalic", "Times Bold Italic",
+      683, -217,
       afm_Times_BoldItalic_widths,
       afm_Times_BoldItalic_kerning_index,
       afm_Times_BoldItalic_kerning_data,
@@ -3307,6 +3319,7 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Times_BoldItalic_ligatures, 1},
   { /* Times-Italic.afm   6975 bytes */
       "Times-Italic", "Times Italic",
+      683, -217,
       afm_Times_Italic_widths,
       afm_Times_Italic_kerning_index,
       afm_Times_Italic_kerning_data,
@@ -3314,11 +3327,12 @@ const afm_fontinfo afm_fontinfolist[] = {
       afm_Times_Italic_ligatures, 1},
   { /* Times-Roman.afm   6287 bytes */
       "Times-Roman", "Times Roman",
+      683, -217,
       afm_Times_Roman_widths,
       afm_Times_Roman_kerning_index,
       afm_Times_Roman_kerning_data,
       afm_Times_Roman_highchars_index, 220,
       afm_Times_Roman_ligatures, 1},
-  { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
 };
 const int afm_fontinfo_count = 14;

diff --git a/src/rrd_afm_data.h b/src/rrd_afm_data.h
index 9ae858c..ecc049f 100644 (file)
--- a/src/rrd_afm_data.h
+++ b/src/rrd_afm_data.h
@@ -168,6 +168,7 @@ typedef const afm_unicode afm_cunicode;
 typedef struct afm_fontinfo {
   const char   *fullname; /* e.g. "Futura Bold Oblique" */
   const char   *postscript_name; /* e.g. "Futura-BoldOblique" */
+  afm_cuint16 ascender, descender;
   afm_cuint8   *widths;
   afm_csint16  *kerning_index;
   afm_cuint8   *kerning_data;