add drag and drop onto app icon (dock etc.) support for MacOS platform.

custom_widgets/yacreader_flow.h

@@ -0,0 +1,21 @@
+#ifndef YACREADER_FLOW_H
+#define YACREADER_FLOW_H
+
+#include "pictureflow.h"
+
+class QMouseEvent;
+
+class YACReaderFlow : public PictureFlow
+{
+Q_OBJECT
+public:
+	YACReaderFlow(QWidget * parent,FlowType flowType = CoverFlowLike);
+
+	void mousePressEvent(QMouseEvent* event);
+	void mouseDoubleClickEvent(QMouseEvent* event);
+
+signals:
+	void selected(unsigned int centerIndex);
+};
+
+#endif // YACREADER_FLOW_H