more mouse interaction features for Qt plotting widget * graphics.in.h, graphics.cc (figure::properties::__mouse_mode__, figure::properties::__pan_mode__, figure::properties::__rotate_mode__, figure::properties::__zoom_mode__): New properties. (figure::properties::set___mouse_mode__): New function. (axes::properties::pan, axes::properties::rotate3d, axes::properties::zoom): New functions. Handle zoom, and pan modes. (axes::properties::clear_zoom_stack): New arg, do_unzoom. Conditionally call unzoom. (axes::properties::unzoom): Also restore view property. (axes::properties::rotate_view): Conditionall save state to zoom stack. (axes::properties::push_zoom_stack): New function. (axes::properties::pan, axes::properties::rotate3d): Delete properties. (axes::properties::update_xlim, axes::properties::update_ylim, axes::properties::update_zlim): Don't clear zoom stack. Delete do_clr_zoom argument. (axes::properties::set_pan, axes::properties::set_rotate3d): Delete. (F__zoom__): New function. * Canvas.h, Canvas.cc (Canvas::toggleAxes, Canvas::toggleGrid): New pure virtual functions. (Canvas::setCursor, Canvas::canvasToggleAxes, Canvas::canvasToggleGrid, Canvas::canvasMouseDoubleClickEvent, Canvas::canvasWheelEvent): New functions. (zoom_enabled, pan_enabled, pan_mode, rotate_enabled, rotate_mode): New static functions. (Canvas::canvasMouseMoveEvent): Call axes::properties::rotate3d to do rotation. Handle panning. (Canvas::canvasMousePressEvent): Also handle "unzoom" action when in pan and rotate modes. (Canvas::canvasMouseReleaseEvent): Zoom by factor if mouse has not moved from mouse press event. * Figure.h, Figure.cc (MouseMode): New enum value, TextMode. (Figure::m_mouseMode, Figure::m_lastMouseMode): Delete member variables. (Figure::mouseMode, Figure::setMouseMode): Get info from and save info to figure properties. (Figure::updateFigureToolBarAndMenuBar, Figure::toggleAxes, Figure::toggleGrid): New functions. (Figure::m_mouseModeGroup): New member variable. (Figure::createFigureToolBarAndMenuBar): Add actions for toggling Axes and Grid. Maintain pointer to MouseModeActionGroup. (mouse_mode_to_string, mouse_mode_from_string): New functions. * GLCanvas.h, GLCanvas.cc (GLCanvas::toggleAxes, GLCanvas::ToggleGrid, GLCanvas::mouseDoubleClickEvent, GLCanvas::wheelEvent): New functions. * MouseModeActionGroup.h, MouseModeActionGroup.cc (MouseModeActionGroup::mouseMode): Delete. (MouseModeActionGroup::setMode): New function. (MouseModeActionGroup::MouseModeActionGroup): Also include action to insert text in the list. * figure.m: Set default pan, rotate, and zoom mode properties for the figure object. * pan.m, rotate3d.m, zoom.m: Improve compatibility with Matlab. Set mode properties for figure. * __init_fltk__.cc: Cope with changes to graphics properties.

--- a/libgui/graphics/Figure.h	Fri Feb 06 08:31:49 2015 -0800
+++ b/libgui/graphics/Figure.h	Fri Feb 06 13:06:54 2015 -0500
@@ -37,11 +37,15 @@
 
 enum MouseMode
 {
+  // NOTE: These values must match the order of the buttons in the
+  // MouseModeActionGroup object.
+
   NoMode        = 0,
   RotateMode    = 1,
   ZoomMode      = 2,
   PanMode       = 3,
-  SelectMode    = 4
+  TextMode      = 4,
+  SelectMode    = 5
 };
 
 class Container;
@@ -49,6 +53,8 @@
 class MenuBar;
 class ToolBar;
 
+class MouseModeActionGroup;
+
 class Figure :
   public Object,
   public MenuContainer,
@@ -64,7 +70,7 @@
 
   static Figure* create (const graphics_object& go);
 
-  MouseMode mouseMode (void) { return m_mouseMode; }
+  MouseMode mouseMode (void);
 
   Container* innerContainer (void);
   QWidget* menu (void);
@@ -93,10 +99,12 @@
   void addCustomToolBar (QToolBar* bar, bool visible);
   void showCustomToolBar (QToolBar* bar, bool visible);
 
+  void updateFigureToolBarAndMenuBar (void);
+
   static void updateBoundingBoxHelper (void*);
 
 private slots:
-  void setMouseMode (MouseMode mode) { m_mouseMode = mode; }
+  void setMouseMode (MouseMode mode);
   void fileNewFigure (void);
   void fileCloseFigure (void);
   void editCopy (void);
@@ -105,6 +113,8 @@
   void helpAboutQtHandles (void);
   void updateMenuBar (void);
   void updateContainer (void);
+  void toggleAxes (void);
+  void toggleGrid (void);
 
 signals:
   void asyncUpdate (void);
@@ -112,11 +122,11 @@
 private:
   Container* m_container;
   bool m_blockUpdates;
-  MouseMode m_mouseMode, m_lastMouseMode;
   QToolBar* m_figureToolBar;
   MenuBar* m_menuBar;
   QRect m_innerRect;
   QRect m_outerRect;
+  MouseModeActionGroup* m_mouseModeGroup;
 };
 
 }; // namespace QtHandles