imagewidget.h Example File

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#ifndef IMAGEWIDGET_H #define IMAGEWIDGET_H #include <QWidget> #include <QImage> #include <QtWidgets> class QGestureEvent; class QPanGesture; class QPinchGesture; class QSwipeGesture; Q_DECLARE_LOGGING_CATEGORY(lcExample) class ImageWidget : public QWidget { Q_OBJECT public: ImageWidget(QWidget *parent = 0); void openDirectory(const QString &path); void grabGestures(const QList<Qt::GestureType> &gestures); protected: bool event(QEvent *event) override; void paintEvent(QPaintEvent *event) override; void resizeEvent(QResizeEvent *event) override; void mouseDoubleClickEvent(QMouseEvent *event) override; private: bool gestureEvent(QGestureEvent *event); void panTriggered(QPanGesture*); void pinchTriggered(QPinchGesture*); void swipeTriggered(QSwipeGesture*); QImage loadImage(const QString &fileName); void loadImage(); void goNextImage(); void goPrevImage(); void goToImage(int index); QString path; QStringList files; int position; QImage prevImage, nextImage; QImage currentImage; qreal horizontalOffset; qreal verticalOffset; qreal rotationAngle; qreal scaleFactor; qreal currentStepScaleFactor; }; #endif

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