Clementine-audio-player-Mac-Linux-Windows/src/widgets/ratingwidget.h

/* This file is part of Clementine.
   Copyright 2010, David Sansome <me@davidsansome.com>

   Clementine 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.

   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef RATINGWIDGET_H
#define RATINGWIDGET_H

#include <QFrame>
#include <QPixmap>

class RatingPainter {
 public:
  RatingPainter();

  static const int kStarCount = 5;
  static const int kStarSize = 15;
  static QRect Contents(const QRect& rect);
  static double RatingForPos(const QPoint& pos, const QRect& rect);

  void Paint(QPainter* painter, const QRect& rect, float rating) const;

 private:
  QPixmap stars_[kStarCount * 2 + 1];
};

class RatingWidget : public QWidget {
  Q_OBJECT
  Q_PROPERTY(float rating READ rating WRITE set_rating);

 public:
  RatingWidget(QWidget* parent = nullptr);

  QSize sizeHint() const;

  float rating() const { return rating_; }
  void set_rating(float rating);

signals:
  void RatingChanged(float rating);

 protected:
  void paintEvent(QPaintEvent*);
  void mousePressEvent(QMouseEvent* e);
  void mouseMoveEvent(QMouseEvent* e);
  void leaveEvent(QEvent*);

 private:
  RatingPainter painter_;
  float rating_;
  float hover_rating_;
};

#endif  // RATINGWIDGET_H