113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
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/* This file is part of Clementine.
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Copyright 2012, David Sansome <me@davidsansome.com>
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MOODBARPROXYSTYLE_H
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#define MOODBARPROXYSTYLE_H
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#include <QProxyStyle>
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class QSlider;
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class QStyleOptionSlider;
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class QTimeLine;
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class MoodbarProxyStyle : public QProxyStyle {
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Q_OBJECT
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public:
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MoodbarProxyStyle(QSlider* slider);
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enum MoodbarStyle {
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Style_Angry,
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Style_Frozen,
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Style_Happy,
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Style_SystemDefault
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};
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// QProxyStyle
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void drawComplexControl(ComplexControl control, const QStyleOptionComplex* option,
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QPainter* painter, const QWidget* widget) const;
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// QObject
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bool eventFilter(QObject* object, QEvent* event);
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public slots:
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// An empty byte array means there's no moodbar, so just show a normal slider.
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void SetMoodbarData(const QByteArray& data);
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// If the moodbar is disabled then a normal slider will always be shown.
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void SetMoodbarEnabled(bool enabled);
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private:
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static const int kNumHues;
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enum State {
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MoodbarOn,
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MoodbarOff,
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FadingToOn,
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FadingToOff
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};
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struct StyleProperties {
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StyleProperties(int threshold = 0, int range_start = 0, int range_delta = 0,
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int sat = 0, int val = 0)
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: threshold_(threshold), range_start_(range_start), range_delta_(range_delta),
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sat_(sat), val_(val) {}
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int threshold_;
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int range_start_;
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int range_delta_;
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int sat_;
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int val_;
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};
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typedef QVector<QColor> ColorList;
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private:
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void NextState();
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void Render(ComplexControl control, const QStyleOptionSlider* option,
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QPainter* painter, const QWidget* widget);
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void EnsureMoodbarRendered();
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static ColorList MoodbarColors(const QByteArray& data, MoodbarStyle style,
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const QPalette& palette);
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static QPixmap MoodbarPixmap(const ColorList& colors, const QSize& size);
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private slots:
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void FaderValueChanged(qreal value);
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private:
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QSlider* slider_;
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bool enabled_;
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QByteArray data_;
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MoodbarStyle moodbar_style_;
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State state_;
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QTimeLine* fade_timeline_;
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QPixmap fade_source_;
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QPixmap fade_target_;
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bool moodbar_colors_dirty_;
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bool moodbar_pixmap_dirty_;
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ColorList moodbar_colors_;
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QPixmap moodbar_pixmap_;
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};
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#endif // MOODBARPROXYSTYLE_H
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