Piano: Move piano roll internals to AudioEngine

The piano roll data definitely belongs in AudioEngine along with the
note and time data. Now RollWidget only has GUI information, much like
the other widgets.

Note that this commit exacerbates issue #1158 which is caused by
RollWidget::paint_event().

1 files changed, 9 insertions, 0 deletions

diff --git a/Applications/Piano/AudioEngine.h b/Applications/Piano/AudioEngine.h
index 8e1a048234..229c365f1a 100644
--- a/Applications/Piano/AudioEngine.h
+++ b/Applications/Piano/AudioEngine.h
@@ -40,6 +40,8 @@ public:
     ~AudioEngine();
 
     const FixedArray<Sample>& buffer() const { return *m_front_buffer_ptr; }
+    Switch roll_note(int y, int x) const { return m_roll_notes[y][x]; }
+    int current_column() const { return m_current_column; }
     int octave() const { return m_octave; }
     int octave_base() const { return (m_octave - octave_min) * 12; }
     int wave() const { return m_wave; }
@@ -54,6 +56,7 @@ public:
     void fill_buffer(FixedArray<Sample>& buffer);
     void set_note(int note, Switch);
     void set_note_current_octave(int note, Switch);
+    void set_roll_note(int y, int x, Switch);
     void set_octave(Direction);
     void set_wave(int wave);
     void set_wave(Direction);
@@ -70,6 +73,8 @@ private:
     double triangle(size_t note);
     double noise() const;
 
+    void update_roll();
+
     void set_sustain_impl(int sustain);
 
     FixedArray<Sample> m_front_buffer { sample_count };
@@ -98,4 +103,8 @@ private:
 
     int m_time { 0 };
     int m_tick { 8 };
+
+    Switch m_roll_notes[note_count][horizontal_notes] { { Off } };
+    int m_current_column { 0 };
+    int m_previous_column { horizontal_notes - 1 };
 };