Fixed issue-241 (no TextGenerator.default_generator for pymod)

The issue was there because the fonts got imported
through Qt Resources. But in pymod there is no Qt.
The solution is to import them though compiled-in
blobs.

scripts/compile_glyphs.rb

@@ -0,0 +1,71 @@
+#!/usr/bin/ruby 
+
+files = []
+
+glyph_dir = File.join(File.dirname($0), "..", "src", "db", "db", "glyphs")
+Dir::new(glyph_dir).each do |file|
+  if file !~ /^\./
+    files << file
+  end
+end
+
+ccfile = File.join(File.dirname($0), "..", "src", "db", "db", "glyphs.cc")
+File.open(ccfile, "w") do |out|
+
+  out.puts <<"END"
+/**
+ *  THIS FILE HAS BEEN CREATED AUTOMATICALLY BY "compile_glyphs.rb"
+ *  DO NOT EDIT!
+ */
+END
+
+  nfile = 0
+
+  files.each do |f|
+
+    nfile += 1
+
+    name = f.sub(/\..*$/, "")
+
+    out.puts("\n// File: #{f}")
+    out.puts("static const char *name_#{nfile} = \"#{name}\";")
+    out.puts("static const char *description_#{nfile} = \"#{f}\";")
+    out.puts("static const uint8_t data_#{nfile}[] = {");
+    
+    File.open(File.join(glyph_dir, f), "rb") do |ly|
+
+      bytes = ly.read
+      hex = ""
+      bytes.size.times do |i|
+        hex += "0x%02x, " % bytes[i].ord
+        if i % 8 == 7
+          out.puts "  " + hex
+          i = 0
+          hex = ""
+        end
+      end
+
+      if hex != ""
+        out.puts "  " + hex
+      end
+
+    end
+
+    out.puts("  0xff  //  dummy")
+    out.puts("};")
+
+  end
+
+  out.puts("\nstatic void load_glyphs (std::vector<db::TextGenerator> &generators)\n{\n")
+
+  nfile.times do |n|
+
+    out.puts("  generators.push_back (db::TextGenerator ());")
+    out.puts("  generators.back ().load_from_data ((const char *) data_#{n + 1}, sizeof (data_#{n + 1}) - 1, name_#{n + 1}, description_#{n + 1});\n")
+
+  end
+
+  out.puts("}")
+
+end
+

src/db/db/dbGlyphs.cc

@@ -36,6 +36,9 @@
 
 #include <cctype>
 
+//  compiled with "scripts/compile_glyphs.rb":
+#include "glyphs.cc"
+
 namespace db
 {
 
@@ -155,13 +158,21 @@ TextGenerator::load_from_resource (const std::string &name)
 
   QByteArray data = qUncompress (QByteArray ((const char *) res.data (), int (res.size ())));
 
+  load_from_data (data.constData (), data.size (), tl::to_string (QFileInfo (tl::to_qstring (name)).baseName ()), name);
+}
+#endif
+
+void
+TextGenerator::load_from_data (const char *data, size_t ndata, const std::string &name, const std::string &description)
+{
   db::Layout layout;
-  tl::InputMemoryStream memory_stream (data.constData (), data.size ());
+  tl::InputMemoryStream memory_stream (data, ndata);
   tl::InputStream stream (memory_stream);
   db::Reader reader (stream);
   db::LayerMap map = reader.read (layout);
 
-  m_description = name;
+  m_description = description;
+  m_name = name;
 
   std::pair<bool, unsigned int> l1 = map.logical (db::LDPair (1, 0));
   std::pair<bool, unsigned int> l2 = map.logical (db::LDPair (2, 0));
@@ -170,10 +181,7 @@ TextGenerator::load_from_resource (const std::string &name)
   if (l1.first && l2.first) {
     read_from_layout (layout, l1.second, l2.second, l3.second);
   }
-
-  m_name = tl::to_string (QFileInfo (tl::to_qstring (name)).baseName ());
 }
-#endif
 
 void
 TextGenerator::load_from_file (const std::string &filename)
@@ -323,22 +331,8 @@ TextGenerator::generators ()
 
     s_fonts.clear ();
 
-#if defined(HAVE_QT)
-    const char *resources[] = {
-      ":/fonts/std_font.gds"
-    };
-
-    for (size_t i = 0 ; i < sizeof (resources) / sizeof (resources [0]); ++i) {
-      try {
-        tl::log << "Loading font from resource " << resources [i] << " ..";
-        s_fonts.push_back (TextGenerator ());
-        s_fonts.back ().load_from_resource (resources [i]);
-      } catch (tl::Exception &ex) {
-        tl::error << ex.msg ();
-        s_fonts.pop_back ();
-      }
-    }
-#endif
+    //  load the compiled-in glyphs
+    load_glyphs (s_fonts);
 
     //  scan for font files
     for (std::vector<std::string>::const_iterator p = s_font_paths.begin (); p != s_font_paths.end (); ++p) {

src/db/db/dbGlyphs.h

@@ -83,6 +83,11 @@ public:
   void load_from_resource (const std::string &name);
 #endif
 
+  /**
+   *  @brief Loads from the given binary data
+   */
+  void load_from_data (const char *data, size_t ndata, const std::string &name, const std::string &description);
+
   /**
    *  @brief Loads the font from the given file
    */

src/db/db/dbResources.qrc

@@ -1,11 +1,8 @@
 <RCC>
-    <qresource prefix="/fonts">
-        <file>std_font.gds</file>
-    </qresource>
-    <qresource prefix="/built-in-macros" >
+    <qresource prefix="/built-in-macros">
         <file alias="pcell_declaration_helper.lym">built-in-macros/pcell_declaration_helper.lym</file>
     </qresource>
-    <qresource prefix="/built-in-pymacros" >
+    <qresource prefix="/built-in-pymacros">
         <file alias="pcell_declaration_helper.lym">built-in-pymacros/pcell_declaration_helper.lym</file>
     </qresource>
 </RCC>