[TD]SectionView/ComplexSection - preview, direction selection

- add preview/live update to TaskSectionView & TaskComplexSection
- add view direction selector to uis
- use SectionNormal as Direction.  Make Direction read-only
- simplify section line end point calculation
- section group command in toolbar
- make section and complex section icons consistent
- fix compsolid cutting tool
- terminology: single/piecewise to offset/aligned

src/Mod/TechDraw/Gui/TaskComplexSection.h

@@ -46,6 +46,9 @@ class DrawComplexSection;
 
 namespace TechDrawGui
 {
+class CompassWidget;
+class VectorEditWidget;
+
 class Ui_TaskComplexSection;
 
 class TaskComplexSection : public QWidget
@@ -59,40 +62,85 @@ public:
                        std::vector<App::DocumentObject*> xShapes,
                        App::DocumentObject* profileObject,
                        std::vector<std::string> profileSubs);
+    TaskComplexSection(TechDraw::DrawComplexSection* complexSection);
     ~TaskComplexSection() = default;
 
     virtual bool accept();
     virtual bool reject();
-    void saveButtons(QPushButton* btnOK,
-                     QPushButton* btnCancel);
-    void enableTaskButtons(bool button);
-public Q_SLOTS:
-    void onSectionObjectsUseSelectionClicked();
-    void onProfileObjectsUseSelectionClicked();
 
 protected:
     void changeEvent(QEvent *event) override;
+    void saveSectionState();
+    void restoreSectionState();
+
+    bool apply(bool forceUpdate = false);
+    void applyQuick(std::string dir);
+    void applyAligned(Base::Vector3d localUnit);
 
     void setUiPrimary();
+    void setUiEdit();
+    void setUiCommon();
+
+    void checkAll(bool check);
+    void enableAll(bool enable);
+
+    void failNoObject();
+    bool isBaseValid();
+    bool isSectionValid();
+
     void updateUi();
 
+protected Q_SLOTS:
+    void onSectionObjectsUseSelectionClicked();
+    void onProfileObjectsUseSelectionClicked();
+    void onUpClicked();
+    void onDownClicked();
+    void onLeftClicked();
+    void onRightClicked();
+    void onIdentifierChanged();
+    void onScaleChanged();
+    void scaleTypeChanged(int index);
+    void liveUpdateClicked();
+    void updateNowClicked();
+    void slotChangeAngle(double newAngle);
+    void slotViewDirectionChanged(Base::Vector3d newDirection);
+
 private:
     void createComplexSection();
+    void updateComplexSection();
+
     QString sourcesToString();
     std::unique_ptr<Ui_TaskComplexSection> ui;
 
     TechDraw::DrawPage* m_page;
+    App::Document* m_doc;
     TechDraw::DrawViewPart* m_baseView;
     TechDraw::DrawComplexSection* m_section;
     std::vector<App::DocumentObject*> m_shapes;
     std::vector<App::DocumentObject*> m_xShapes;
     App::DocumentObject* m_profileObject;
     std::vector<std::string> m_profileSubs;
+    std::string m_dirName;
     std::string m_sectionName;
+    Base::Vector3d m_saveNormal;
     Base::Vector3d m_saveXDir;
+    std::string m_saveBaseName;
+    std::string m_savePageName;
+    std::string m_saveSymbol;
+    std::string m_saveDirName;
+    Base::Vector3d m_saveDirection;
+    Base::Vector3d m_saveOrigin;
+    double m_saveScale;
+    int m_saveScaleType;
+    bool m_saved;
+    bool m_createMode;
+    Base::Vector3d m_normal;
 
-    QPushButton* m_btnOK;
-    QPushButton* m_btnCancel;
+    int m_applyDeferred;
+    Base::Vector3d m_localUnit;
+    CompassWidget* m_compass;
+    double m_angle;
+    VectorEditWidget* m_viewDirectionWidget;
 
 };
 
@@ -107,13 +155,13 @@ public:
                           std::vector<App::DocumentObject*> xShapes,
                           App::DocumentObject* profileObject,
                           std::vector<std::string> profileSubs);
+    TaskDlgComplexSection(TechDraw::DrawComplexSection* page);
     ~TaskDlgComplexSection() override;
 
 public:
     /// is called the TaskView when the dialog is opened
     void open() override;
     /// is called by the framework if an button is clicked which has no accept or reject role
-    void clicked(int) override;
     /// is called by the framework if the dialog is accepted (Ok)
     bool accept() override;
     /// is called by the framework if the dialog is rejected (Cancel)
@@ -123,8 +171,6 @@ public:
                         { return false; }
     void update();
 
-    void modifyStandardButtons(QDialogButtonBox* box) override;
-
 protected:
 
 private: