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| |
| #ifndef ANIMATION_H |
| #define ANIMATION_H |
| |
| #include <QtWidgets> |
| |
| #include <QtCore/qpropertyanimation.h> |
| |
| class Animation : public QPropertyAnimation { |
| public: |
| enum PathType { |
| LinearPath, |
| CirclePath, |
| NPathTypes |
| }; |
| Animation(QObject *target, const QByteArray &prop) |
| : QPropertyAnimation(target, prop) |
| { |
| setPathType(LinearPath); |
| } |
| |
| void setPathType(PathType pathType) |
| { |
| if (pathType >= NPathTypes) |
| qWarning("Unknown pathType %d", pathType); |
| |
| m_pathType = pathType; |
| m_path = QPainterPath(); |
| } |
| |
| void updateCurrentTime(int currentTime) override |
| { |
| if (m_pathType == CirclePath) { |
| if (m_path.isEmpty()) { |
| QPointF to = endValue().toPointF(); |
| QPointF from = startValue().toPointF(); |
| m_path.moveTo(from); |
| m_path.addEllipse(QRectF(from, to)); |
| } |
| int dura = duration(); |
| const qreal progress = ((dura == 0) ? 1 : ((((currentTime - 1) % dura) + 1) / qreal(dura))); |
| |
| qreal easedProgress = easingCurve().valueForProgress(progress); |
| if (easedProgress > 1.0) { |
| easedProgress -= 1.0; |
| } else if (easedProgress < 0) { |
| easedProgress += 1.0; |
| } |
| QPointF pt = m_path.pointAtPercent(easedProgress); |
| updateCurrentValue(pt); |
| emit valueChanged(pt); |
| } else { |
| QPropertyAnimation::updateCurrentTime(currentTime); |
| } |
| } |
| |
| QPainterPath m_path; |
| PathType m_pathType; |
| }; |
| |
| #endif // ANIMATION_H |