From 72dec2f3e783b19688639197ea13aa01b23a4143 Mon Sep 17 00:00:00 2001
From: Paul <baconpaul@users.noreply.github.com>
Date: Sun, 5 Jan 2020 19:25:38 -0500
Subject: [PATCH] Display the Tuning Frequency Table (#1454)

Display the full tuning frequency table in the HTML

Part of #1041
---
 src/common/Tunings.cpp            | 30 +++++++++++++++++++++++++++++-
 src/common/Tunings.h              |  4 +++-
 src/common/gui/SurgeGUIEditor.cpp |  4 ++--
 3 files changed, 34 insertions(+), 4 deletions(-)

diff --git a/src/common/Tunings.cpp b/src/common/Tunings.cpp
index f96df59b041..9209f43bb12 100644
--- a/src/common/Tunings.cpp
+++ b/src/common/Tunings.cpp
@@ -1,5 +1,6 @@
 
 #include "Tunings.h"
+#include "SurgeStorage.h"
 
 #include <iostream>
 #include <fstream>
@@ -146,7 +147,7 @@ bool Surge::Storage::Scale::isValid() const
    return true;
 }
 
-std::string Surge::Storage::Scale::toHtml()
+std::string Surge::Storage::Scale::toHtml(SurgeStorage *storage)
 {
     std::ostringstream htmls;
 
@@ -216,6 +217,33 @@ R"HTML(
        htmls << "</td><td>" << t.cents << "</td><td>" << t.floatValue << "</td></tr>\n";
     };
 
+       htmls << R"HTML(
+        </table>
+
+        <p>
+
+        <table>
+          <tr>
+            <th>Midi Note</th><th>Scale Position</th><th>Frequency</th>
+          </tr>
+
+)HTML";
+
+       for( int i=0; i<127; ++i )
+       {
+          int octave = (i / 12) - 1;
+          char notenames[12][3] = {"C ", "C#", "D ", "D#", "E ", "F ", "F#", "G ", "G#", "A ", "A#", "B "};
+
+          htmls << "<tr><td>" << i << " (" << notenames[i % 12 ] << octave << ")</td>\n";
+
+          auto tn = i - storage->scaleConstantNote();
+          while( tn < 0 ) tn += count;
+          
+          auto p = storage->note_to_pitch(i);
+          htmls << "<td>" << (tn % count + 1) << "</td><td>" << 8.175798915 * p << " hz</td>";
+          htmls << "</tr>\n";
+       }
+       
        htmls << R"HTML(
         </table>
       </div>
diff --git a/src/common/Tunings.h b/src/common/Tunings.h
index ace0854b1bc..af522d55948 100644
--- a/src/common/Tunings.h
+++ b/src/common/Tunings.h
@@ -3,6 +3,8 @@
 #include <vector>
 #include <iostream>
 
+class SurgeStorage;
+
 namespace Surge
 {
 namespace Storage
@@ -40,7 +42,7 @@ struct Scale
 
    bool isValid() const;
 
-   std::string toHtml();
+   std::string toHtml(SurgeStorage *storage);
 };
 
 std::ostream& operator<<(std::ostream& os, const Tone& sc);
diff --git a/src/common/gui/SurgeGUIEditor.cpp b/src/common/gui/SurgeGUIEditor.cpp
index c08b9fd02c4..fe5fb2091c4 100644
--- a/src/common/gui/SurgeGUIEditor.cpp
+++ b/src/common/gui/SurgeGUIEditor.cpp
@@ -3494,8 +3494,8 @@ VSTGUI::COptionMenu *SurgeGUIEditor::makeTuningMenu(VSTGUI::CRect &menuRect)
     auto *sct = addCallbackMenu(tuningSubMenu, "Show current tuning",
                     [this]()
                     {
-                        // Surge::UserInteractions::promptOKCancel( "Surge tuning is NONstandard tuning", "Tuning Info" );
-                        Surge::UserInteractions::showHTML( this->synth->storage.currentScale.toHtml() );
+                       // Surge::UserInteractions::promptOKCancel( "Surge tuning is NONstandard tuning", "Tuning Info" );
+                       Surge::UserInteractions::showHTML( this->synth->storage.currentScale.toHtml(&(this->synth->storage)) );
                     }
         );
     sct->setEnabled(! this->synth->storage.isStandardTuning );