melodyedit.h

class Song;
struct Syllable;


class MelodyEditor:public Gtk::Widget {
public:
    MelodyEditor(Song&);

protected:
    void get_preferred_width_vfunc(int& minimum_width, int& natural_width) const override;
    void get_preferred_height_for_width_vfunc(int width, int& minimum_height, int& natural_height) const  override;
    void get_preferred_height_vfunc(int& minimum_height, int& natural_height) const override;
    void get_preferred_width_for_height_vfunc(int height, int& minimum_width, int& natural_width) const override;
  
    void on_size_allocate(Gtk::Allocation& allocation) override;
    void on_realize() override;
    bool on_draw(const Cairo::RefPtr<Cairo::Context>& cr) override;
    bool on_motion_notify_event(GdkEventMotion* event) override;
    bool on_button_press_event(GdkEventButton* event) override;
	bool on_key_press_event(GdkEventKey* event) override; 	

private:
    Glib::RefPtr<Gdk::Window> m_refGdkWindow;

    Song&       song;

    Syllable*   highlighted_syllable=nullptr;
    int         highlighted_note=-1;

    int         scalex=8;
    int         scaley=16;
};