path: root/src/ui/widget/font-variants.cpp

/*
 * Author:
 *   Tavmjong Bah <tavmjong@free.fr>
 *
 * Copyright (C) 2015, 2018 Tavmong Bah
 *
 * Released under GNU GPL.  Read the file 'COPYING' for more information.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <glibmm/i18n.h>
#include <gtkmm.h>

#include <libnrtype/font-instance.h>

#include "font-variants.h"

// For updating from selection
#include "desktop.h"
#include "object/sp-text.h"

namespace Inkscape {
namespace UI {
namespace Widget {

  FontVariants::FontVariants () :
    Gtk::VBox (),
    _ligatures_frame          ( Glib::ustring(C_("Font variant", "Ligatures"    )) ),
    _ligatures_common         ( Glib::ustring(C_("Font variant", "Common"       )) ),
    _ligatures_discretionary  ( Glib::ustring(C_("Font variant", "Discretionary")) ),
    _ligatures_historical     ( Glib::ustring(C_("Font variant", "Historical"   )) ),
    _ligatures_contextual     ( Glib::ustring(C_("Font variant", "Contextual"   )) ),

    _position_frame           ( Glib::ustring(C_("Font variant", "Position"     )) ),
    _position_normal          ( Glib::ustring(C_("Font variant", "Normal"       )) ),
    _position_sub             ( Glib::ustring(C_("Font variant", "Subscript"    )) ),
    _position_super           ( Glib::ustring(C_("Font variant", "Superscript"  )) ),

    _caps_frame               ( Glib::ustring(C_("Font variant", "Capitals"     )) ),
    _caps_normal              ( Glib::ustring(C_("Font variant", "Normal"       )) ),
    _caps_small               ( Glib::ustring(C_("Font variant", "Small"        )) ),
    _caps_all_small           ( Glib::ustring(C_("Font variant", "All small"    )) ),
    _caps_petite              ( Glib::ustring(C_("Font variant", "Petite"       )) ),
    _caps_all_petite          ( Glib::ustring(C_("Font variant", "All petite"   )) ),
    _caps_unicase             ( Glib::ustring(C_("Font variant", "Unicase"      )) ),
    _caps_titling             ( Glib::ustring(C_("Font variant", "Titling"      )) ),

    _numeric_frame            ( Glib::ustring(C_("Font variant", "Numeric"      )) ),
    _numeric_lining           ( Glib::ustring(C_("Font variant", "Lining"       )) ),
    _numeric_old_style        ( Glib::ustring(C_("Font variant", "Old Style"    )) ),
    _numeric_default_style    ( Glib::ustring(C_("Font variant", "Default Style")) ),
    _numeric_proportional     ( Glib::ustring(C_("Font variant", "Proportional" )) ),
    _numeric_tabular          ( Glib::ustring(C_("Font variant", "Tabular"      )) ),
    _numeric_default_width    ( Glib::ustring(C_("Font variant", "Default Width")) ),
    _numeric_diagonal         ( Glib::ustring(C_("Font variant", "Diagonal"     )) ),
    _numeric_stacked          ( Glib::ustring(C_("Font variant", "Stacked"      )) ),
    _numeric_default_fractions( Glib::ustring(C_("Font variant", "Default Fractions")) ),
    _numeric_ordinal          ( Glib::ustring(C_("Font variant", "Ordinal"      )) ),
    _numeric_slashed_zero     ( Glib::ustring(C_("Font variant", "Slashed Zero" )) ),

    _feature_frame            ( Glib::ustring(C_("Font variant", "Feature Settings")) ),
    _feature_label            ( Glib::ustring(C_("Font variant", "Selection has different Feature Settings!")) ),
    
    _ligatures_changed( false ),
    _position_changed( false ),
    _caps_changed( false ),
    _numeric_changed( false )

  {

    // Ligatures --------------------------

    // Add tooltips
    _ligatures_common.set_tooltip_text(
      _("Common ligatures. On by default. OpenType tables: 'liga', 'clig'"));
    _ligatures_discretionary.set_tooltip_text(
      _("Discretionary ligatures. Off by default. OpenType table: 'dlig'"));
    _ligatures_historical.set_tooltip_text(
      _("Historical ligatures. Off by default. OpenType table: 'hlig'"));
    _ligatures_contextual.set_tooltip_text(
      _("Contextual forms. On by default. OpenType table: 'calt'"));

    // Add signals
    _ligatures_common.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::ligatures_callback) );
    _ligatures_discretionary.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::ligatures_callback) );
    _ligatures_historical.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::ligatures_callback) );
    _ligatures_contextual.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::ligatures_callback) );

    // Add to frame
    _ligatures_grid.attach( _ligatures_common,              0, 0, 1, 1);
    _ligatures_grid.attach( _ligatures_discretionary,       0, 1, 1, 1);
    _ligatures_grid.attach( _ligatures_historical,          0, 2, 1, 1);
    _ligatures_grid.attach( _ligatures_contextual,          0, 3, 1, 1);
    _ligatures_grid.attach( _ligatures_label_common,        1, 0, 1, 1);
    _ligatures_grid.attach( _ligatures_label_discretionary, 1, 1, 1, 1);
    _ligatures_grid.attach( _ligatures_label_historical,    1, 2, 1, 1);
    _ligatures_grid.attach( _ligatures_label_contextual,    1, 3, 1, 1);
    _ligatures_frame.add( _ligatures_grid );
    pack_start( _ligatures_frame, Gtk::PACK_SHRINK );

    ligatures_init();
    
    // Position ----------------------------------

    // Add tooltips
    _position_normal.set_tooltip_text( _("Normal position."));
    _position_sub.set_tooltip_text( _("Subscript. OpenType table: 'subs'") );
    _position_super.set_tooltip_text( _("Superscript. OpenType table: 'sups'") );

    // Group buttons
    Gtk::RadioButton::Group position_group = _position_normal.get_group();
    _position_sub.set_group(position_group);
    _position_super.set_group(position_group);

    // Add signals
    _position_normal.signal_button_press_event().connect ( sigc::mem_fun(*this, &FontVariants::position_callback) );
    _position_sub.signal_button_press_event().connect ( sigc::mem_fun(*this, &FontVariants::position_callback) );
    _position_super.signal_button_press_event().connect ( sigc::mem_fun(*this, &FontVariants::position_callback) );

    // Add to frame
    _position_vbox.pack_start( _position_normal);
    _position_vbox.pack_start( _position_sub   );
    _position_vbox.pack_start( _position_super );
    _position_frame.add( _position_vbox );
    pack_start( _position_frame, Gtk::PACK_SHRINK );

    position_init();

    // Caps ----------------------------------

    // Add tooltips
    _caps_normal.set_tooltip_text( _("Normal capitalization."));
    _caps_small.set_tooltip_text( _("Small-caps (lowercase). OpenType table: 'smcp'"));
    _caps_all_small.set_tooltip_text( _("All small-caps (uppercase and lowercase). OpenType tables: 'c2sc' and 'smcp'"));
    _caps_petite.set_tooltip_text( _("Petite-caps (lowercase). OpenType table: 'pcap'"));
    _caps_all_petite.set_tooltip_text( _("All petite-caps (uppercase and lowercase). OpenType tables: 'c2sc' and 'pcap'"));
    _caps_unicase.set_tooltip_text( _("Unicase (small caps for uppercase, normal for lowercase). OpenType table: 'unic'"));
    _caps_titling.set_tooltip_text( _("Titling caps (lighter-weight uppercase for use in titles). OpenType table: 'titl'"));

    // Group buttons
    Gtk::RadioButton::Group caps_group = _caps_normal.get_group();
    _caps_small.set_group(caps_group);
    _caps_all_small.set_group(caps_group);
    _caps_petite.set_group(caps_group);
    _caps_all_petite.set_group(caps_group);
    _caps_unicase.set_group(caps_group);
    _caps_titling.set_group(caps_group);

    // Add signals
    _caps_normal.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );
    _caps_small.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );
    _caps_all_small.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );
    _caps_petite.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );
    _caps_all_petite.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );
    _caps_unicase.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );
    _caps_titling.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::caps_callback) );

    // Add to frame
    _caps_vbox.pack_start( _caps_normal    );
    _caps_vbox.pack_start( _caps_small     );
    _caps_vbox.pack_start( _caps_all_small );
    _caps_vbox.pack_start( _caps_petite    );
    _caps_vbox.pack_start( _caps_all_petite);
    _caps_vbox.pack_start( _caps_unicase   );
    _caps_vbox.pack_start( _caps_titling   );
    _caps_frame.add( _caps_vbox );
    pack_start( _caps_frame, Gtk::PACK_SHRINK );

    caps_init();

    // Numeric ------------------------------

    // Add tooltips
    _numeric_default_style.set_tooltip_text( _("Normal style."));
    _numeric_lining.set_tooltip_text( _("Lining numerals. OpenType table: 'lnum'"));
    _numeric_old_style.set_tooltip_text( _("Old style numerals. OpenType table: 'onum'"));
    _numeric_default_width.set_tooltip_text( _("Normal widths."));
    _numeric_proportional.set_tooltip_text( _("Proportional width numerals. OpenType table: 'pnum'"));
    _numeric_tabular.set_tooltip_text( _("Same width numerals. OpenType table: 'tnum'"));
    _numeric_default_fractions.set_tooltip_text( _("Normal fractions."));
    _numeric_diagonal.set_tooltip_text( _("Diagonal fractions. OpenType table: 'frac'"));
    _numeric_stacked.set_tooltip_text( _("Stacked fractions. OpenType table: 'afrc'"));
    _numeric_ordinal.set_tooltip_text( _("Ordinals (raised 'th', etc.). OpenType table: 'ordn'"));
    _numeric_slashed_zero.set_tooltip_text( _("Slashed zeros. OpenType table: 'zero'"));

    // Group buttons
    Gtk::RadioButton::Group style_group = _numeric_default_style.get_group();
    _numeric_lining.set_group(style_group);
    _numeric_old_style.set_group(style_group);

    Gtk::RadioButton::Group width_group = _numeric_default_width.get_group();
    _numeric_proportional.set_group(width_group);
    _numeric_tabular.set_group(width_group);

    Gtk::RadioButton::Group fraction_group = _numeric_default_fractions.get_group();
    _numeric_diagonal.set_group(fraction_group);
    _numeric_stacked.set_group(fraction_group);

    // Add signals
    _numeric_default_style.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_lining.signal_clicked().connect (        sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_old_style.signal_clicked().connect (     sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_default_width.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_proportional.signal_clicked().connect (  sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_tabular.signal_clicked().connect (       sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_default_fractions.signal_clicked().connect ( sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_diagonal.signal_clicked().connect (      sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_stacked.signal_clicked().connect (       sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_ordinal.signal_clicked().connect (       sigc::mem_fun(*this, &FontVariants::numeric_callback) );
    _numeric_slashed_zero.signal_clicked().connect (  sigc::mem_fun(*this, &FontVariants::numeric_callback) );

    // Add to frame
    _numeric_stylebox.pack_start( _numeric_default_style );
    _numeric_stylebox.pack_start( _numeric_lining );
    _numeric_stylebox.pack_start( _numeric_old_style );
    _numeric_vbox.pack_start( _numeric_stylebox );
    _numeric_widthbox.pack_start( _numeric_default_width );
    _numeric_widthbox.pack_start( _numeric_proportional );
    _numeric_widthbox.pack_start( _numeric_tabular );
    _numeric_vbox.pack_start( _numeric_widthbox );
    _numeric_fractionbox.pack_start( _numeric_default_fractions );
    _numeric_fractionbox.pack_start( _numeric_diagonal );
    _numeric_fractionbox.pack_start( _numeric_stacked );
    _numeric_vbox.pack_start( _numeric_fractionbox );
    _numeric_vbox.pack_start( _numeric_ordinal );
    _numeric_vbox.pack_start( _numeric_slashed_zero );
    _numeric_frame.add( _numeric_vbox );
    pack_start( _numeric_frame, Gtk::PACK_SHRINK );
    

    // Feature settings ---------------------

    // Add tooltips
    _feature_entry.set_tooltip_text( _("Feature settings in CSS form. No sanity checking is performed."));

    _feature_list.set_justify( Gtk::JUSTIFY_LEFT );
    _feature_list.set_line_wrap( true );

    _feature_substitutions.set_justify( Gtk::JUSTIFY_LEFT );
    _feature_substitutions.set_line_wrap( true );

    // Add to frame
    _feature_vbox.pack_start( _feature_entry );
    _feature_vbox.pack_start( _feature_label );
    _feature_vbox.pack_start( _feature_list  );
    _feature_vbox.pack_start( _feature_substitutions );
    _feature_frame.add( _feature_vbox );
    pack_start( _feature_frame, Gtk::PACK_SHRINK  );

    // Add signals
    //_feature_entry.signal_key_press_event().connect ( sigc::mem_fun(*this, &FontVariants::feature_callback) );
    _feature_entry.signal_changed().connect( sigc::mem_fun(*this, &FontVariants::feature_callback) );
    
    show_all_children();

  }

  void
  FontVariants::ligatures_init() {
      // std::cout << "FontVariants::ligatures_init()" << std::endl;
  }
  
  void
  FontVariants::ligatures_callback() {
      // std::cout << "FontVariants::ligatures_callback()" << std::endl;
      _ligatures_changed = true;
      _changed_signal.emit();
  }

  void
  FontVariants::position_init() {
      // std::cout << "FontVariants::position_init()" << std::endl;
  }
  
  bool
  FontVariants::position_callback(GdkEventButton * /*event*/) {
      // std::cout << "FontVariants::position_callback()" << std::endl;
      _position_changed = true;
      _changed_signal.emit();
  }

  void
  FontVariants::caps_init() {
      // std::cout << "FontVariants::caps_init()" << std::endl;
  }
  
  void
  FontVariants::caps_callback() {
      // std::cout << "FontVariants::caps_callback()" << std::endl;
      _caps_changed = true;
      _changed_signal.emit();
  }

  void
  FontVariants::numeric_init() {
      // std::cout << "FontVariants::numeric_init()" << std::endl;
  }
  
  void
  FontVariants::numeric_callback() {
      // std::cout << "FontVariants::numeric_callback()" << std::endl;
      _numeric_changed = true;
      _changed_signal.emit();
  }

  void
  FontVariants::feature_init() {
      // std::cout << "FontVariants::feature_init()" << std::endl;
  }
  
  void
  FontVariants::feature_callback() {
      // std::cout << "FontVariants::feature_callback()" << std::endl;
      _feature_changed = true;
      _changed_signal.emit();
  }

  // Update GUI based on query.
  void
  FontVariants::update( SPStyle const *query, bool different_features, Glib::ustring& font_spec ) {

      _ligatures_all = query->font_variant_ligatures.computed;
      _ligatures_mix = query->font_variant_ligatures.value;

      _ligatures_common.set_active(       _ligatures_all & SP_CSS_FONT_VARIANT_LIGATURES_COMMON );
      _ligatures_discretionary.set_active(_ligatures_all & SP_CSS_FONT_VARIANT_LIGATURES_DISCRETIONARY );
      _ligatures_historical.set_active(   _ligatures_all & SP_CSS_FONT_VARIANT_LIGATURES_HISTORICAL );
      _ligatures_contextual.set_active(   _ligatures_all & SP_CSS_FONT_VARIANT_LIGATURES_CONTEXTUAL );
      
      _ligatures_common.set_inconsistent(        _ligatures_mix & SP_CSS_FONT_VARIANT_LIGATURES_COMMON );
      _ligatures_discretionary.set_inconsistent( _ligatures_mix & SP_CSS_FONT_VARIANT_LIGATURES_DISCRETIONARY );
      _ligatures_historical.set_inconsistent(    _ligatures_mix & SP_CSS_FONT_VARIANT_LIGATURES_HISTORICAL );
      _ligatures_contextual.set_inconsistent(    _ligatures_mix & SP_CSS_FONT_VARIANT_LIGATURES_CONTEXTUAL );

      _position_all = query->font_variant_position.computed;
      _position_mix = query->font_variant_position.value;
      
      _position_normal.set_active( _position_all & SP_CSS_FONT_VARIANT_POSITION_NORMAL );
      _position_sub.set_active(    _position_all & SP_CSS_FONT_VARIANT_POSITION_SUB );
      _position_super.set_active(  _position_all & SP_CSS_FONT_VARIANT_POSITION_SUPER );

      _position_normal.set_inconsistent( _position_mix & SP_CSS_FONT_VARIANT_POSITION_NORMAL );
      _position_sub.set_inconsistent(    _position_mix & SP_CSS_FONT_VARIANT_POSITION_SUB );
      _position_super.set_inconsistent(  _position_mix & SP_CSS_FONT_VARIANT_POSITION_SUPER );

      _caps_all = query->font_variant_caps.computed;
      _caps_mix = query->font_variant_caps.value;

      _caps_normal.set_active(     _caps_all & SP_CSS_FONT_VARIANT_CAPS_NORMAL );
      _caps_small.set_active(      _caps_all & SP_CSS_FONT_VARIANT_CAPS_SMALL );
      _caps_all_small.set_active(  _caps_all & SP_CSS_FONT_VARIANT_CAPS_ALL_SMALL );
      _caps_petite.set_active(     _caps_all & SP_CSS_FONT_VARIANT_CAPS_PETITE );
      _caps_all_petite.set_active( _caps_all & SP_CSS_FONT_VARIANT_CAPS_ALL_PETITE );
      _caps_unicase.set_active(    _caps_all & SP_CSS_FONT_VARIANT_CAPS_UNICASE );
      _caps_titling.set_active(    _caps_all & SP_CSS_FONT_VARIANT_CAPS_TITLING );

      _caps_normal.set_inconsistent(     _caps_mix & SP_CSS_FONT_VARIANT_CAPS_NORMAL );
      _caps_small.set_inconsistent(      _caps_mix & SP_CSS_FONT_VARIANT_CAPS_SMALL );
      _caps_all_small.set_inconsistent(  _caps_mix & SP_CSS_FONT_VARIANT_CAPS_ALL_SMALL );
      _caps_petite.set_inconsistent(     _caps_mix & SP_CSS_FONT_VARIANT_CAPS_PETITE );
      _caps_all_petite.set_inconsistent( _caps_mix & SP_CSS_FONT_VARIANT_CAPS_ALL_PETITE );
      _caps_unicase.set_inconsistent(    _caps_mix & SP_CSS_FONT_VARIANT_CAPS_UNICASE );
      _caps_titling.set_inconsistent(    _caps_mix & SP_CSS_FONT_VARIANT_CAPS_TITLING );

      _numeric_all = query->font_variant_numeric.computed;
      _numeric_mix = query->font_variant_numeric.value;

      if (_numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_LINING_NUMS) {
          _numeric_lining.set_active();
      } else if (_numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_OLDSTYLE_NUMS) {
          _numeric_old_style.set_active();
      } else {
          _numeric_default_style.set_active();
      }

      if (_numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_PROPORTIONAL_NUMS) {
          _numeric_proportional.set_active();
      } else if (_numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_TABULAR_NUMS) {
          _numeric_tabular.set_active();
      } else {
          _numeric_default_width.set_active();
      }

      if (_numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_DIAGONAL_FRACTIONS) {
          _numeric_diagonal.set_active();
      } else if (_numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_STACKED_FRACTIONS) {
          _numeric_stacked.set_active();
      } else {
          _numeric_default_fractions.set_active();
      }

      _numeric_ordinal.set_active(      _numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_ORDINAL );
      _numeric_slashed_zero.set_active( _numeric_all & SP_CSS_FONT_VARIANT_NUMERIC_SLASHED_ZERO );


      _numeric_lining.set_inconsistent(       _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_LINING_NUMS );
      _numeric_old_style.set_inconsistent(    _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_OLDSTYLE_NUMS );
      _numeric_proportional.set_inconsistent( _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_PROPORTIONAL_NUMS );
      _numeric_tabular.set_inconsistent(      _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_TABULAR_NUMS );
      _numeric_diagonal.set_inconsistent(     _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_DIAGONAL_FRACTIONS );
      _numeric_stacked.set_inconsistent(      _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_STACKED_FRACTIONS );
      _numeric_ordinal.set_inconsistent(      _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_ORDINAL );
      _numeric_slashed_zero.set_inconsistent( _numeric_mix & SP_CSS_FONT_VARIANT_NUMERIC_SLASHED_ZERO );

      if( query->font_feature_settings.value )
          _feature_entry.set_text( query->font_feature_settings.value );
      if( different_features ) {
          _feature_label.show();
      } else {
          _feature_label.hide();
      }


      // Disable/Enable based on available OpenType tables.
      font_instance* res = font_factory::Default()->FaceFromFontSpecification( font_spec.c_str() );
      if( res ) {

          std::map<Glib::ustring,int>::iterator it;

          if((it = res->openTypeTables.find("liga"))!= res->openTypeTables.end() ||
             (it = res->openTypeTables.find("clig"))!= res->openTypeTables.end()) {
              _ligatures_common.set_sensitive();
          } else {
              _ligatures_common.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("dlig"))!= res->openTypeTables.end()) {
              _ligatures_discretionary.set_sensitive();
          } else {
              _ligatures_discretionary.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("hlig"))!= res->openTypeTables.end()) {
              _ligatures_historical.set_sensitive();
          } else {
              _ligatures_historical.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("calt"))!= res->openTypeTables.end()) {
              _ligatures_contextual.set_sensitive();
          } else {
              _ligatures_contextual.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("subs"))!= res->openTypeTables.end()) {
              _position_sub.set_sensitive();
          } else {
              _position_sub.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("sups"))!= res->openTypeTables.end()) {
              _position_super.set_sensitive();
          } else {
              _position_super.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("smcp"))!= res->openTypeTables.end()) {
              _caps_small.set_sensitive();
          } else {
              _caps_small.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("c2sc"))!= res->openTypeTables.end() &&
             (it = res->openTypeTables.find("smcp"))!= res->openTypeTables.end()) {
              _caps_all_small.set_sensitive();
          } else {
              _caps_all_small.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("pcap"))!= res->openTypeTables.end()) {
              _caps_petite.set_sensitive();
          } else {
              _caps_petite.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("c2sc"))!= res->openTypeTables.end() &&
             (it = res->openTypeTables.find("pcap"))!= res->openTypeTables.end()) {
              _caps_all_petite.set_sensitive();
          } else {
              _caps_all_petite.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("unic"))!= res->openTypeTables.end()) {
              _caps_unicase.set_sensitive();
          } else {
              _caps_unicase.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("titl"))!= res->openTypeTables.end()) {
              _caps_titling.set_sensitive();
          } else {
              _caps_titling.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("lnum"))!= res->openTypeTables.end()) {
              _numeric_lining.set_sensitive();
          } else {
              _numeric_lining.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("onum"))!= res->openTypeTables.end()) {
              _numeric_old_style.set_sensitive();
          } else {
              _numeric_old_style.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("pnum"))!= res->openTypeTables.end()) {
              _numeric_proportional.set_sensitive();
          } else {
              _numeric_proportional.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("tnum"))!= res->openTypeTables.end()) {
              _numeric_tabular.set_sensitive();
          } else {
              _numeric_tabular.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("frac"))!= res->openTypeTables.end()) {
              _numeric_diagonal.set_sensitive();
          } else {
              _numeric_diagonal.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("afrac"))!= res->openTypeTables.end()) {
              _numeric_stacked.set_sensitive();
          } else {
              _numeric_stacked.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("ordn"))!= res->openTypeTables.end()) {
              _numeric_ordinal.set_sensitive();
          } else {
              _numeric_ordinal.set_sensitive( false );
          }

          if((it = res->openTypeTables.find("zero"))!= res->openTypeTables.end()) {
              _numeric_slashed_zero.set_sensitive();
          } else {
              _numeric_slashed_zero.set_sensitive( false );
          }

          // List available ligatures
          Glib::ustring markup_liga;
          Glib::ustring markup_dlig;
          Glib::ustring markup_hlig;
          Glib::ustring markup_calt;
          for (auto table: res->openTypeLigatures) {

              Glib::ustring markup;
              markup += "<span font_family='";
              markup += sp_font_description_get_family(res->descr);
              markup += "'>";
              markup += Glib::Markup::escape_text(table.second);
              markup += "</span>";

              if (table.first == "liga") markup_liga += markup;
              if (table.first == "clig") markup_liga += markup;
              if (table.first == "dlig") markup_dlig += markup;
              if (table.first == "hlig") markup_hlig += markup;
              if (table.first == "calt") markup_calt += markup;
          }

          _ligatures_label_common.set_markup        ( markup_liga.c_str() );
          _ligatures_label_discretionary.set_markup ( markup_dlig.c_str() );
          _ligatures_label_historical.set_markup    ( markup_hlig.c_str() );
          _ligatures_label_contextual.set_markup    ( markup_calt.c_str() );

          // Make list of tables not handled above... eventually add Gtk::Label with
          // this info.
          std::map<Glib::ustring,int> table_copy = res->openTypeTables;
          if( (it = table_copy.find("liga")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("clig")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("dlig")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("hlig")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("calt")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("subs")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("sups")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("smcp")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("c2sc")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("pcap")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("unic")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("titl")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("lnum")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("onum")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("pnum")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("tnum")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("frac")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("afrc")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("ordn")) != table_copy.end() ) table_copy.erase( it );
          if( (it = table_copy.find("zero")) != table_copy.end() ) table_copy.erase( it );
          std::string ott_list = "OpenType tables not included above: ";
          for(it = table_copy.begin(); it != table_copy.end(); ++it) {
              // std::cout << "Other: " << it->first << "  Occurrences: " << it->second << std::endl;
              ott_list += it->first;
              ott_list += ", ";
          }

          _feature_list.set_text( ott_list.c_str() );

          // "<span foreground='darkblue'>";
          Glib::ustring markup;

          for (auto table: res->openTypeStylistic) {

              markup += table.first;
              markup += ": ";

              markup += "<span font_family='";
              markup += sp_font_description_get_family(res->descr);
              markup += "'>";
              markup += Glib::Markup::escape_text(table.second);
              markup += "</span>";

              markup += " → ";

              markup += "<span font_family='";
              markup += sp_font_description_get_family(res->descr);
              markup += "'>";
              markup += "<span font_features='";
              markup += table.first;
              markup += "'>";
              markup += Glib::Markup::escape_text(table.second);
              markup += "</span>";
              markup += "</span>\n";

          }

          _feature_substitutions.set_markup ( markup.c_str() );

      } else {
          std::cerr << "FontVariants::update(): Couldn't find font_instance for: "
                    << font_spec << std::endl;
      }


      _ligatures_changed = false;
      _position_changed  = false;
      _caps_changed      = false;
      _numeric_changed   = false;
      _feature_changed   = false;
  }

  void
  FontVariants::fill_css( SPCSSAttr *css ) {

      // Ligatures
      bool common        = _ligatures_common.get_active();
      bool discretionary = _ligatures_discretionary.get_active();
      bool historical    = _ligatures_historical.get_active();
      bool contextual    = _ligatures_contextual.get_active();

      if( !common && !discretionary && !historical && !contextual ) {
          sp_repr_css_set_property(css, "font-variant-ligatures", "none" );
      } else if ( common && !discretionary && !historical && contextual ) {
          sp_repr_css_set_property(css, "font-variant-ligatures", "normal" );
      } else {
          Glib::ustring css_string;
          if ( !common )
              css_string += "no-common-ligatures ";
          if ( discretionary )
              css_string += "discretionary-ligatures ";
          if ( historical )
              css_string += "historical-ligatures ";
          if ( !contextual )
              css_string += "no-contextual ";
          sp_repr_css_set_property(css, "font-variant-ligatures", css_string.c_str() );
      }

      // Position
      {
          unsigned position_new = SP_CSS_FONT_VARIANT_POSITION_NORMAL;
          Glib::ustring css_string;
          if( _position_normal.get_active() ) {
              css_string = "normal";
          } else if( _position_sub.get_active() ) {
              css_string = "sub";
              position_new = SP_CSS_FONT_VARIANT_POSITION_SUB;
          } else if( _position_super.get_active() ) {
              css_string = "super";
              position_new = SP_CSS_FONT_VARIANT_POSITION_SUPER;
          }

          // 'if' may not be necessary... need to test.
          if( (_position_all != position_new) || ((_position_mix != 0) && _position_changed) ) {
              sp_repr_css_set_property(css, "font-variant-position", css_string.c_str() );
          }
      }
      
      // Caps
      {
          //unsigned caps_new;
          Glib::ustring css_string;
          if( _caps_normal.get_active() ) {
              css_string = "normal";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_NORMAL;
          } else if( _caps_small.get_active() ) {
              css_string = "small-caps";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_SMALL;
          } else if( _caps_all_small.get_active() ) {
              css_string = "all-small-caps";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_ALL_SMALL;
          } else if( _caps_petite.get_active() ) {
              css_string = "petite";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_PETITE;
          } else if( _caps_all_petite.get_active() ) {
              css_string = "all-petite";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_ALL_PETITE;
          } else if( _caps_unicase.get_active() ) {
              css_string = "unicase";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_UNICASE;
          } else if( _caps_titling.get_active() ) {
              css_string = "titling";
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_TITLING;
          //} else {
          //    caps_new = SP_CSS_FONT_VARIANT_CAPS_NORMAL;
          }

          // May not be necessary... need to test.
          //if( (_caps_all != caps_new) || ((_caps_mix != 0) && _caps_changed) ) {
          sp_repr_css_set_property(css, "font-variant-caps", css_string.c_str() );
          //}
      }

      // Numeric
      bool default_style = _numeric_default_style.get_active();
      bool lining        = _numeric_lining.get_active();
      bool old_style     = _numeric_old_style.get_active();

      bool default_width = _numeric_default_width.get_active();
      bool proportional  = _numeric_proportional.get_active();
      bool tabular       = _numeric_tabular.get_active();

      bool default_fractions = _numeric_default_fractions.get_active();
      bool diagonal          = _numeric_diagonal.get_active();
      bool stacked           = _numeric_stacked.get_active();

      bool ordinal           = _numeric_ordinal.get_active();
      bool slashed_zero      = _numeric_slashed_zero.get_active();

      if (default_style & default_width & default_fractions & !ordinal & !slashed_zero) {
          sp_repr_css_set_property(css, "font-variant-numeric", "normal");
      } else {
          Glib::ustring css_string;
          if ( lining )
              css_string += "lining-nums ";
          if ( old_style )
              css_string += "oldstyle-nums ";
          if ( proportional )
              css_string += "proportional-nums ";
          if ( tabular )
              css_string += "tabular-nums ";
          if ( diagonal )
              css_string += "diagonal-fractions ";
          if ( stacked )
              css_string += "stacked-fractions ";
          if ( ordinal )
              css_string += "ordinal ";
          if ( slashed_zero )
              css_string += "slashed-zero ";
          sp_repr_css_set_property(css, "font-variant-numeric", css_string.c_str() );
      }

      // Feature settings
      Glib::ustring feature_string = _feature_entry.get_text();
      if( !feature_string.empty() || feature_string.compare( "normal" ) ) {
          sp_repr_css_set_property(css, "font-feature-settings", feature_string.c_str());
      }
  }
   
} // namespace Widget
} // namespace UI
} // namespace Inkscape

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :