chore: adjusted the project directory structure

app/graphicsscene.h

@@ -0,0 +1,26 @@
+#ifndef GRAPHICSSCENE_H
+#define GRAPHICSSCENE_H
+
+#include <QGraphicsScene>
+
+class GraphicsScene : public QGraphicsScene
+{
+    Q_OBJECT
+public:
+    GraphicsScene(QObject *parent = nullptr);
+    ~GraphicsScene();
+
+    void showImage(const QPixmap &pixmap);
+    void showText(const QString &text);
+    void showSvg(const QString &filepath);
+    void showGif(const QString &filepath);
+
+    bool trySetTransformationMode(Qt::TransformationMode mode);
+
+    QPixmap renderToPixmap();
+
+private:
+    QGraphicsItem * m_theThing;
+};
+
+#endif // GRAPHICSSCENE_H