static Presets* fade_in_presets;
static Presets* fade_out_presets;
protected:
bool on_key_press_event (GdkEventKey*);
bool on_key_release_event (GdkEventKey*);
static Presets* fade_in_presets;
static Presets* fade_out_presets;
protected:
bool on_key_press_event (GdkEventKey*);
bool on_key_release_event (GdkEventKey*);