From 443ab0f809b848675fe5a74fe2290c7dc7ca16b0 Mon Sep 17 00:00:00 2001
From: Tavmjong Bah <tavmjong@free.fr>
Date: Mon, 5 Jun 2017 21:32:59 +0200
Subject: Show glyphs with alternative styles in "Feature Settings" section of
 "Variants" tab of "Text and Font" dialog.

(bzr r15703.1.28)
---
 src/ui/widget/font-variants.cpp | 34 ++++++++++++++++++++++++++++++++++
 src/ui/widget/font-variants.h   |  1 +
 2 files changed, 35 insertions(+)

(limited to 'src/ui/widget')

diff --git a/src/ui/widget/font-variants.cpp b/src/ui/widget/font-variants.cpp
index 6753bbc7a..e7645b620 100644
--- a/src/ui/widget/font-variants.cpp
+++ b/src/ui/widget/font-variants.cpp
@@ -234,10 +234,14 @@ namespace Widget {
     _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.add( _feature_entry );
     _feature_vbox.add( _feature_label );
     _feature_vbox.add( _feature_list  );
+    _feature_vbox.add( _feature_substitutions );
     _feature_frame.add( _feature_vbox );
     add( _feature_frame );
 
@@ -566,6 +570,36 @@ namespace Widget {
 
           _feature_list.set_text( ott_list.c_str() );
 
+          // "<span foreground='darkblue'>";
+          Glib::ustring markup;
+
+          for (auto table: res->openTypeSubstitutions) {
+
+              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;
diff --git a/src/ui/widget/font-variants.h b/src/ui/widget/font-variants.h
index 507e5fb91..cf8e476a9 100644
--- a/src/ui/widget/font-variants.h
+++ b/src/ui/widget/font-variants.h
@@ -87,6 +87,7 @@ protected:
     Gtk::Entry          _feature_entry;
     Gtk::Label          _feature_label;
     Gtk::Label          _feature_list;
+    Gtk::Label          _feature_substitutions;
 
 private:
     void ligatures_init();
-- 
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