Implement FilePropertiesDialog

Implemented a dialog for file properties. When the mime type says it's a
video, fork ffprobe to read the properties of all streams and show them
in a QTreeView powered by a SmTreeModel. If the mime type is image, use
QImage to read some properties and show them in the same dialog.

This commit introduces the new class FilePropertiesDialog. I also had to
implement a copy constructor for SmTreeItem. It obsoletes classes
ActorWidget, ActorModel and MoviePropertiesDialog.

1 files changed, 1 insertions, 0 deletions

diff --git a/helper.h b/helper.h
index 62919bb..96816b2 100644
--- a/helper.h
+++ b/helper.h
@@ -23,6 +23,7 @@ namespace Helper {
 	bool removeFromArchive(const QString &filename, const QString &md5);
 	const QString createArchivePath(const QString &path, const QString &md5, bool withMd5 = false);
 	QPair<QString, QStringList> programData(const QString &prefix, const QString &preferred = QString());
+	QString durationFromSecs(qint64 secs);
 	class StringListContains : public std::binary_function<QString, QString, bool> {
 		public:
 			bool operator()(const QString s, const QString &part) const;