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104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
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/* Original Work Copyright (c) 2012-2014 Alexander Turkin
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Modified 2014 by William Hallatt
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef QTWAITINGSPINNER_H
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#define QTWAITINGSPINNER_H
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#include <QWidget>
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#include <QTimer>
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#include <QColor>
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class QtWaitingSpinner : public QWidget {
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Q_OBJECT
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public:
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/*! Constructor for "standard" widget behaviour - use this
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* constructor if you wish to, e.g. embed your widget in another. */
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QtWaitingSpinner(QWidget *parent = 0);
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/*! Constructor - use this constructor to automatically create a modal
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* ("blocking") spinner on top of the calling widget/window. If a valid
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* parent widget is provided, "centreOnParent" will ensure that
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* QtWaitingSpinner automatically centres itself on it, if not,
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* "centreOnParent" is ignored. */
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QtWaitingSpinner(Qt::WindowModality modality, QWidget *parent = 0,
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bool centreOnParent = true);
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public Q_SLOTS:
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void start();
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void stop();
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public:
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void setColor(QColor color);
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void setRoundness(qreal roundness);
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void setMinimumTrailOpacity(qreal minOpacity);
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void setTrailFadePercentage(qreal trail);
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void setRevolutionsPerSecond(int rps);
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void setNumberOfLines(int lines);
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void setLineLength(int length);
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void setLineWidth(int width);
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void setInnerRadius(int radius);
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bool isSpinning() const;
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private Q_SLOTS:
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void rotate();
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protected:
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void paintEvent(QPaintEvent *ev);
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private:
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static int calculateTimerInterval(int lines, int speed);
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static int lineCountDistanceFromPrimary(int current, int primary,
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int totalNrOfLines);
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static QColor currentLineColor(int distance, int totalNrOfLines,
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qreal trailFadePerc, qreal minOpacity,
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QColor color);
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void initialise();
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void updateSize();
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void updateTimer();
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void updatePosition();
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private:
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// Configurable settings.
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QColor m_color;
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qreal m_roundness; // 0..100
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qreal m_minTrailOpacity;
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qreal m_trailFadePercentage;
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int m_revPerSec; // revolutions per second
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int m_numberOfLines;
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int m_lineLength;
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int m_lineWidth;
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int m_innerRadius;
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private:
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QtWaitingSpinner(const QtWaitingSpinner&);
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QtWaitingSpinner& operator=(const QtWaitingSpinner&);
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QTimer *m_timer;
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QWidget *m_parent;
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bool m_centreOnParent;
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int m_currentCounter;
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bool m_isSpinning;
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};
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#endif // QTWAITINGSPINNER_H
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