Fix some severe braindamage

It started as a buxfix session, but the more I dug into some ancient
code, the more I had to change.
Well, first and foremost, this fixes a crash in PicturesWidget. Trying
to display the mappings of the selected picture in a different color
never was a good idea. Show them in the statusbar instead.
While looking at the statusBar code, make PictureWidget emit signals to
show the total size and number of selected items. Then I noticed some
really, really braindamaged connection madness in the Shemov
constructor. Instead of doing all the work in SheMov itself, have the
widgets emit signals.
This should have been several commits, but one lead to another...

1 files changed, 5 insertions, 3 deletions

diff --git a/pictureswidget.h b/pictureswidget.h
index cdc40b5..a8463a4 100644
--- a/pictureswidget.h
+++ b/pictureswidget.h
@@ -41,7 +41,6 @@ class PicturesWidget : public QWidget {
         void showPicViewer(bool toggled);
 
     private slots:
-        void setMappingColors();
         void editMappings();
         void constructWindowTitle();
         void showInPicViewer(const QModelIndex &idx);
@@ -82,10 +81,12 @@ class PictureView : public QTreeView {
         virtual void contextMenuEvent(QContextMenuEvent *e);
 
     private slots:
-        void setFileMappings();
+        void selectedFilesChanged();
 
     signals:
-        void newFileMappigs();
+        void newMappings(QString);
+        void numSelected(int);
+        void selectedSize(qint64);
         void editPicsMappings();
 
     private:
@@ -96,6 +97,7 @@ class PictureView : public QTreeView {
         int mCursorOffset;
         QList<int> mFilesMappings;
         PictureViewer2 *mPV;
+        MappingTreeModel *mMappingTreeModel;
 };
 
 class PicFilesModel : public SmTreeModel {