added namespaces

widgets/notebookpagedroppreview.h

@@ -0,0 +1,26 @@
+#ifndef NOTEBOOKPAGEDROPPREVIEW_H
+#define NOTEBOOKPAGEDROPPREVIEW_H
+
+#include <QPropertyAnimation>
+#include <QWidget>
+
+namespace chatterino {
+namespace widgets {
+
+class NotebookPageDropPreview : public QWidget
+{
+public:
+    NotebookPageDropPreview(QWidget *parent);
+
+    void setBounds(const QRect &rect);
+
+protected:
+    void paintEvent(QPaintEvent *);
+
+    QPropertyAnimation positionAnimation;
+    QRect desiredGeometry;
+};
+}
+}
+
+#endif  // NOTEBOOKPAGEDROPPREVIEW_H