Rework the project settings.

This has still a few missing things, but this enough to start getting
some feedback. Missing are non qt projects, a solution for the
runconfiguration, a missing black line between the treeview on top and
the project settings at the bottom. Some flickering with removing/adding
widgets to the QScrollArea and not showing the expanded widget if the
Details button is right at the bottom.

src/plugins/projectexplorer/projectwindow.h

@@ -32,14 +32,15 @@
 
 #include <QtGui/QWidget>
 #include <QtGui/QScrollArea>
+#include <QtGui/QTreeWidget>
 
 QT_BEGIN_NAMESPACE
 class QLabel;
 class QVBoxLayout;
 class QModelIndex;
 class QTabWidget;
-class QTreeWidget;
 class QTreeWidgetItem;
+class QHBoxLayout;
 QT_END_NAMESPACE
 
 namespace ProjectExplorer {
@@ -68,11 +69,26 @@ private:
     {
         QLabel *nameLabel;
         QWidget *panelWidget;
+        QHBoxLayout *marginLayout;
     };
     QVBoxLayout *m_layout;
     QList<Panel> m_panels;
 };
 
+
+class ProjectView : public QTreeWidget
+{
+    Q_OBJECT
+public:
+    ProjectView (QWidget *parent);
+    ~ProjectView ();
+    virtual QSize sizeHint() const;
+private slots:
+    void updateSizeHint();
+private:
+    QSize m_sizeHint;
+};
+
 class ProjectWindow : public QWidget
 {
     Q_OBJECT
@@ -98,13 +114,14 @@ private:
     SessionManager *m_session;
     ProjectExplorerPlugin *m_projectExplorer;
 
-    QTreeWidget* m_treeWidget;
+    ProjectView* m_treeWidget;
     PanelsWidget *m_panelsWidget;
 
     Project *findProject(const QString &path) const;
     bool m_currentItemChanged;
 };
 
+
 } // namespace Internal
 } // namespace ProjectExplorer