Act on doubleClick in FileTreeWidget

When doubleclicking a picture in FileTreeWidget the pictureViewer
is shown. Doubleclicking a movie file launches the default movie
player.

Since PictureViewer is now used in FileSystemWidget and
ArchiveTreeView a global instance is needed. The appropriate place
for this is a singleton. Since we already had a singleton for
QAbstractItemModels I renamed it to SmGlobals and added a function
to return a PictureViewer object. Renaming it was quite easy
thanks to QtCreator's ability to rename variable names.

1 files changed, 3 insertions, 0 deletions

diff --git a/filestreewidget.h b/filestreewidget.h
index aafbe97..6f87e62 100644
--- a/filestreewidget.h
+++ b/filestreewidget.h
@@ -17,6 +17,7 @@ class FilesTreeView;
 class FilesTreeModel;
 class FilesTreeSortModel;
 class SeriesTreeModel;
+class PictureViewer;
 class QContextMenuEvent;
 class QSpinBox;
 class QPushButton;
@@ -36,6 +37,7 @@ class FilesTreeWidget : public QWidget {
 	private slots:
 		void fileSelectionChanged(const QModelIndex &current, const QModelIndex &previous);
 		void fileSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
+		void itemDoubleClicked(const QModelIndex &index);
 
 	signals:
 		void sizeChanged(qint64);
@@ -46,6 +48,7 @@ class FilesTreeWidget : public QWidget {
 		FilesTreeModel *mModel;
 		FilesTreeSortModel *mProxy;
 		SeriesTreeModel *mSeriesModel;
+		PictureViewer *mPictureViewer;
 		QModelIndexList mSelectedFiles;
 		qint64 mSelectedSize;
 };