106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/* This file is part of Clementine.
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Copyright 2010, 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 NYANCATANALYZER_H
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#define NYANCATANALYZER_H
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#include "analyzerbase.h"
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#include <QDateTime>
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class NyanCatAnalyzer : public Analyzer::Base {
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Q_OBJECT
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public:
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Q_INVOKABLE NyanCatAnalyzer(QWidget* parent);
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static const char* kName;
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protected:
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void transform(Scope&);
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void analyze(QPainter& p, const Analyzer::Scope&, bool new_frame);
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void timerEvent(QTimerEvent* e);
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void resizeEvent(QResizeEvent* e);
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private:
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static const int kCatHeight = 21;
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static const int kCatWidth = 34;
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static const int kCatFrameCount = 6;
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static const int kRainbowOverlap = 13;
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static const int kSleepingCatHeight = 24;
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static const int kHistorySize = 128;
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static const int kRainbowBands = 6;
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static const float kPixelScale;
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static const int kFrameIntervalMs = 150;
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private:
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inline QRect CatSourceRect() const {
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return QRect(0, kCatHeight * frame_, kCatWidth, kCatHeight);
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}
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inline QRect SleepingCatSourceRect() const {
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return QRect(0, kCatHeight * kCatFrameCount, kCatWidth, kSleepingCatHeight);
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}
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inline QRect CatDestRect() const {
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return QRect(width() - kCatWidth, (height() - kCatHeight) / 2, kCatWidth,
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kCatHeight);
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}
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inline QRect SleepingCatDestRect() const {
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return QRect(width() - kCatWidth, (height() - kSleepingCatHeight) / 2,
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kCatWidth, kSleepingCatHeight);
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}
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private:
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// "constants" that get initialised in the constructor
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float band_scale_[kRainbowBands];
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QPen colors_[kRainbowBands];
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// Nyan cat!
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QPixmap cat_;
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// For the nyan cat animation
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int timer_id_;
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int frame_;
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// The y positions of each point on the rainbow.
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float history_[kHistorySize * kRainbowBands];
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// A cache of the last frame's rainbow, so it can be used in the next frame.
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QPixmap buffer_[2];
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int current_buffer_;
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// Geometry information that's updated on resize:
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// The width of the widget minus the space for the cat
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int available_rainbow_width_;
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// X spacing between each point in the polyline.
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int px_per_frame_;
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// Amount the buffer_ is shifted to the left (off the edge of the widget) to
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// make the rainbow extend from 0 to available_rainbow_width_.
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int x_offset_;
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QBrush background_brush_;
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};
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#endif // NYANCATANALYZER_H
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