qtau/editor/ui/piano.h

/*
    This file is part of QTau
    Copyright (C) 2013-2018  Tobias "Tomoko" Platen <tplaten@posteo.de>
    Copyright (C) 2013       digited       <https://github.com/digited>
    Copyright (C) 2010-2013  HAL@ShurabaP  <https://github.com/haruneko>

    QTau is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

    SPDX-License-Identifier: GPL-3.0+
*/

#ifndef PIANO_H
#define PIANO_H

#include <QWidget>
#include "Utils.h"

#include <QDebug>

class QPixmap;

// write new PianoRoll that works using affine transformations and modulo 12

class qtauPiano : public QWidget {
  Q_OBJECT

 public:
  qtauPiano(QWidget *parent = 0);
  ~qtauPiano();

  void setOffset(int voff);
  void configure(const SNoteSetup &newSetup);

 signals:
  void keyPressed(int keyNum);
  void keyReleased(int keyNum);

  void scrolled(int delta);
  void heightChanged(int newHeight);

 public slots:
  //

 protected:
  void paintEvent(QPaintEvent *event);
  void resizeEvent(QResizeEvent *event);

  void mouseDoubleClickEvent(QMouseEvent *event);
  void mouseMoveEvent(QMouseEvent *event);
  void mousePressEvent(QMouseEvent *event);
  void mouseReleaseEvent(QMouseEvent *event);
  void wheelEvent(QWheelEvent *event);

  // UNUSED: void onHover(bool inside);
  // bool eventFilter(QObject *object, QEvent *event);

  void initPiano(int baseOctave, int octavesNum);

  QPoint _offset;  // graphical offset of keys, used for virtual scrolling
  QPixmap *_labelCache;

 public:
  //-------------------------------------------------------------
  typedef enum { Passive = 0, Pressed, Highlighted } pianoKeyState;

 protected:
  int _pressedKey;
  int _hoveredKey;
  SNoteSetup _ns;
};

#endif  // PIANO_H