Add moodbar

src/moodbar/moodbarrenderer.h

@@ -0,0 +1,73 @@
+/* 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 <QByteArray>
+#include <QImage>
+#include <QPixmap>
+#include <QMetaType>
+#include <QVector>
+#include <QColor>
+#include <QPainter>
+#include <QPalette>
+
+typedef QVector<QColor> ColorVector;
+
+class MoodbarRenderer {
+ public:
+  // These values are persisted.  Remember to change moodbarsettingspage.ui when changing them.
+  enum MoodbarStyle {
+    Style_Normal = 0,
+    Style_Angry,
+    Style_Frozen,
+    Style_Happy,
+    Style_SystemPalette,
+    StyleCount
+  };
+
+  static const int kNumHues;
+
+  static QString StyleName(MoodbarStyle style);
+
+  static ColorVector Colors(const QByteArray& data, 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:
+  MoodbarRenderer();
+
+  struct StyleProperties {
+    StyleProperties(int threshold = 0, int range_start = 0, int range_delta = 0, int sat = 0, 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