/* This file was part of Clementine.
   Copyright 2012, David Sansome <me@davidsansome.com>

   Strawberry 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.

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

#ifndef MOODBARRENDERER_H
#define MOODBARRENDERER_H

#include <QMetaType>
#include <QList>
#include <QByteArray>
#include <QString>
#include <QImage>
#include <QVector>
#include <QColor>
#include <QPalette>
#include <QRect>
#include <QSize>

class QPainter;

using ColorVector = QVector<QColor>;

class MoodbarRenderer {
 public:
  // These values are persisted.  Remember to change moodbarsettingspage.ui when changing them.
  enum class MoodbarStyle {
    Normal = 0,
    Angry,
    Frozen,
    Happy,
    SystemPalette,
    StyleCount
  };

  static QString StyleName(const MoodbarStyle style);

  static ColorVector Colors(const QByteArray &data, const MoodbarStyle style, const QPalette &palette);
  static void Render(const ColorVector &colors, QPainter *p, const QRect rect);
  static QImage RenderToImage(const ColorVector &colors, const QSize size);

 private:
  explicit MoodbarRenderer();

  struct StyleProperties {
    explicit StyleProperties(const int threshold = 0, const int range_start = 0, const int range_delta = 0, const int sat = 0, const int val = 0)
        : threshold_(threshold),
          range_start_(range_start),
          range_delta_(range_delta),
          sat_(sat),
          val_(val) {}

    int threshold_;
    int range_start_;
    int range_delta_;
    int sat_;
    int val_;
  };
};

Q_DECLARE_METATYPE(QVector<QColor>)

#endif  // MOODBARRENDERER_H