Open desktop message avatars only after a completed click

tools/chatgui/src/messagedelegate.h

@@ -4,6 +4,7 @@
 #include <cstdint>
 
 #include <QStyledItemDelegate>
+#include <QPersistentModelIndex>
 #include <functional>
 
 enum MessageDataRole {
@@ -111,6 +112,8 @@ private:
 
     std::function<void(const QString&)> m_videoOpenCb;
     std::function<void(const QString&)> m_imageOpenCb;
+    QPersistentModelIndex m_avatarPress;
+    QPoint m_avatarPressPosition;
     std::function<bool(const QModelIndex&)> m_downloadCb;
 
     Layout calcLayout(const QStyleOptionViewItem &option,