Initial Linux Qt OpenCV project

app/include/ImageView.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <QGraphicsView>
+#include <QImage>
+#include <QPixmap>
+
+class QGraphicsPixmapItem;
+class QGraphicsScene;
+class QWheelEvent;
+class QMouseEvent;
+
+class ImageView final : public QGraphicsView
+{
+    Q_OBJECT
+
+public:
+    explicit ImageView(QWidget *parent = nullptr);
+
+    void setImage(const QImage &image);
+    void clearImage();
+    void fitImageToView();
+    bool hasImage() const;
+
+protected:
+    void wheelEvent(QWheelEvent *event) override;
+    void mouseDoubleClickEvent(QMouseEvent *event) override;
+
+private:
+    void resetSceneRect();
+
+    QGraphicsScene *scene_ = nullptr;
+    QGraphicsPixmapItem *pixmapItem_ = nullptr;
+    QPixmap pixmap_;
+    double zoomFactor_ = 1.0;
+};