Transient mode for auto-measure ruler

src/ant/ant/antService.cc

@@ -1056,8 +1056,18 @@ Service::Service (db::Manager *manager, lay::LayoutViewBase *view)
     m_drawing (false), m_current (),
     m_move_mode (MoveNone),
     m_seg_index (0),
-    m_current_template (0)
-{ 
+    m_current_template (0),
+    m_hover (false),
+    m_hover_wait (false),
+    m_hover_buttons (0),
+    m_mouse_in_window (false)
+{
+#if defined(HAVE_QT)
+  m_timer.setInterval (100 /*hover time*/);
+  m_timer.setSingleShot (true);
+  connect (&m_timer, SIGNAL (timeout ()), this, SLOT (timeout ()));
+#endif
+
   mp_view->annotations_changed_event.add (this, &Service::annotations_changed);
 }
 
@@ -1809,9 +1819,36 @@ Service::mouse_double_click_event (const db::DPoint & /*p*/, unsigned int button
   return false;
 }
 
+lay::TwoPointSnapToObjectResult
+Service::auto_measure (const db::DPoint &p, lay::angle_constraint_type ac, const ant::Template &tpl)
+{
+  //  for auto-metric we need some cutline constraint - any or global won't do.
+  if (ac == lay::AC_Global) {
+    ac = tpl.angle_constraint ();
+  }
+  if (ac == lay::AC_Global) {
+    ac = m_snap_mode;
+  }
+  if (ac == lay::AC_Global) {
+    ac = lay::AC_Diagonal;
+  }
+
+  db::DVector g;
+  if (m_grid_snap) {
+    g = db::DVector (m_grid, m_grid);
+  }
+
+  double snap_range = ui ()->mouse_event_trans ().inverted ().ctrans (m_snap_range);
+  snap_range *= 0.5;
+
+  return lay::obj_snap2 (mp_view, p, g, ac, snap_range, snap_range * 1000.0);
+}
+
 bool
 Service::mouse_click_event (const db::DPoint &p, unsigned int buttons, bool prio) 
 {
+  hover_reset ();
+
   if (prio && (buttons & lay::LeftButton) != 0) {
 
     const ant::Template &tpl = current_template ();
@@ -1852,27 +1889,7 @@ Service::mouse_click_event (const db::DPoint &p, unsigned int buttons, bool prio
 
       } else if (tpl.mode () == ant::Template::RulerAutoMetric) {
 
-        //  for auto-metric we need some cutline constraint - any or global won't do.
-        lay::angle_constraint_type ac = ac_from_buttons (buttons);
-        if (ac == lay::AC_Global) {
-          ac = tpl.angle_constraint ();
-        }
-        if (ac == lay::AC_Global) {
-          ac = m_snap_mode;
-        }
-        if (ac == lay::AC_Global) {
-          ac = lay::AC_Diagonal;
-        }
-
-        db::DVector g;
-        if (m_grid_snap) {
-          g = db::DVector (m_grid, m_grid);
-        }
-
-        double snap_range = ui ()->mouse_event_trans ().inverted ().ctrans (m_snap_range);
-        snap_range *= 0.5;
-
-        lay::TwoPointSnapToObjectResult ee = lay::obj_snap2 (mp_view, p, g, ac, snap_range, snap_range * 1000.0);
+        lay::TwoPointSnapToObjectResult ee = auto_measure (p, ac_from_buttons (buttons), tpl);
         if (ee.any) {
 
           //  begin the transaction
@@ -1968,21 +1985,33 @@ Service::create_measure_ruler (const db::DPoint &pt, lay::angle_constraint_type
 bool
 Service::mouse_move_event (const db::DPoint &p, unsigned int buttons, bool prio) 
 {
-  if (prio) {
+  if (! prio) {
+    return false;
+  }
 
-    lay::PointSnapToObjectResult snap_details;
-    if (m_drawing) {
-      snap_details = snap2_details (m_p1, p, mp_active_ruler->ruler (), ac_from_buttons (buttons));
-    } else {
-      const ant::Template &tpl = current_template ();
-      snap_details = snap1_details (p, m_obj_snap && tpl.snap ());
-    }
+  if (! m_drawing && m_mouse_in_window && view ()->transient_selection_mode ()) {
 
-    mouse_cursor_from_snap_details (snap_details);
+    //  Restart hover timer
+    m_hover_wait = true;
+#if defined(HAVE_QT)
+    m_timer.start ();
+#endif
+    m_hover_point = p;
+    m_hover_buttons = buttons;
 
   }
 
-  if (m_drawing && prio) {
+  lay::PointSnapToObjectResult snap_details;
+  if (m_drawing) {
+    snap_details = snap2_details (m_p1, p, mp_active_ruler->ruler (), ac_from_buttons (buttons));
+  } else {
+    const ant::Template &tpl = current_template ();
+    snap_details = snap1_details (p, m_obj_snap && tpl.snap ());
+  }
+
+  mouse_cursor_from_snap_details (snap_details);
+
+  if (m_drawing) {
 
     set_cursor (lay::Cursor::cross);
 
@@ -2284,6 +2313,70 @@ Service::click_proximity (const db::DPoint &pos, lay::Editable::SelectionMode mo
   } 
 }
 
+bool
+Service::enter_event (bool /*prio*/)
+{
+  m_mouse_in_window = true;
+  return false;
+}
+
+bool
+Service::leave_event (bool)
+{
+  m_mouse_in_window = false;
+  hover_reset ();
+  return false;
+}
+
+void
+Service::hover_reset ()
+{
+  if (m_hover_wait) {
+#if defined(HAVE_QT)
+    m_timer.stop ();
+#endif
+    m_hover_wait = false;
+  }
+  if (m_hover) {
+    //  as we use the transient selection for the hover ruler, we have to remove it here
+    clear_transient_selection ();
+    m_hover = false;
+  }
+}
+
+#if defined(HAVE_QT)
+void
+Service::timeout ()
+{
+  m_hover_wait = false;
+  m_hover = true;
+
+  //  as we use the transient selection for the hover ruler, we have to remove it here
+  clear_transient_selection ();
+
+  //  transiently create an auto-metric ruler if requested
+
+  const ant::Template &tpl = current_template ();
+  if (tpl.mode () == ant::Template::RulerAutoMetric) {
+
+    lay::TwoPointSnapToObjectResult ee = auto_measure (m_hover_point, ac_from_buttons (m_hover_buttons), tpl);
+    if (ee.any) {
+
+      m_current = ant::Object (ee.first, ee.second, 0, tpl);
+
+      //  HINT: there is no special style for "transient selection on rulers"
+      mp_transient_ruler = new ant::View (this, &m_current, true /*not selected*/);
+
+      if (! editables ()->has_selection ()) {
+        display_status (true);
+      }
+
+    }
+
+  }
+}
+#endif
+
 bool
 Service::transient_select (const db::DPoint &pos)
 {

src/ant/ant/antService.h

@@ -39,6 +39,11 @@
 #include <map>
 #include <vector>
 
+#if defined (HAVE_QT)
+#  include <QTimer>
+#  include <QObject>
+#endif
+
 namespace ant {
 
 class LayoutViewBase;
@@ -177,12 +182,19 @@ private:
 
 // -------------------------------------------------------------
 
-class ANT_PUBLIC Service
-  : public lay::EditorServiceBase,
+class ANT_PUBLIC Service :
+#if defined (HAVE_QT)
+    public QObject,
+#endif
+    public lay::EditorServiceBase,
     public lay::Drawing,
     public db::Object
 {
-public: 
+#if defined (HAVE_QT)
+Q_OBJECT
+#endif
+
+public:
   typedef lay::AnnotationShapes::iterator obj_iterator;
 
   /**
@@ -341,6 +353,21 @@ public:
    */
   virtual db::DBox selection_bbox ();
 
+  /**
+   *  @brief Implementation of the editables API
+   */
+  virtual bool enter_event (bool);
+
+  /**
+   *  @brief Implementation of the editables API
+   */
+  virtual bool leave_event (bool);
+
+  /**
+   *  @brief Implementation of the editables API
+   */
+  virtual void hover_reset ();
+
   /**
    *  @brief Transform the selection (reimplementation of lay::Editable interface)
    */
@@ -506,6 +533,11 @@ public:
    */
   tl::Event annotation_selection_changed_event;
 
+#if defined (HAVE_QT)
+public slots:
+  void timeout ();
+#endif
+
 private:
   //  Ruler display and snapping configuration
   tl::Color m_color;
@@ -551,10 +583,22 @@ private:
   std::vector<ant::Template> m_ruler_templates;
   unsigned int m_current_template;
 
+  //  Hover detector
+  bool m_hover;
+  bool m_hover_wait;
+  db::DPoint m_hover_point;
+  unsigned int m_hover_buttons;
+#if defined (HAVE_QT)
+  QTimer m_timer;
+#endif
+
+  bool m_mouse_in_window;
+
   std::pair<bool, db::DPoint> snap1 (const db::DPoint &p, bool obj_snap);
   lay::PointSnapToObjectResult snap1_details (const db::DPoint &p, bool obj_snap);
   std::pair<bool, db::DPoint> snap2 (const db::DPoint &p1, const db::DPoint &p2, const ant::Object *obj, lay::angle_constraint_type ac);
   lay::PointSnapToObjectResult snap2_details (const db::DPoint &p1, const db::DPoint &p2, const ant::Object *obj, lay::angle_constraint_type ac);
+  lay::TwoPointSnapToObjectResult auto_measure (const db::DPoint &p, lay::angle_constraint_type ac, const ant::Template &tpl);
 
   const ant::Template &current_template () const;
 

src/laybasic/laybasic/layMove.cc

@@ -305,10 +305,7 @@ MoveService::handle_click (const db::DPoint &p, unsigned int buttons, bool drag_
 
     if (mp_editables->begin_move (p, ac_from_buttons (buttons))) {
 
-      lay::SelectionService *selector = mp_view->selection_service ();
-      if (selector) {
-        selector->hover_reset ();
-      }
+      ui ()->hover_reset ();
         
       mp_view->clear_transient_selection ();
 

src/laybasic/laybasic/laySelector.h

@@ -69,14 +69,7 @@ public:
   virtual bool mouse_click_event (const db::DPoint &p, unsigned int buttons, bool prio);
   virtual bool mouse_double_click_event (const db::DPoint &p, unsigned int buttons, bool prio);
   virtual bool wheel_event (int delta, bool horizontal, const db::DPoint &p, unsigned int buttons, bool prio);
-
-  /**
-   *  @brief Reset the hover timer for the transient selection
-   *
-   *  This method may be used by other services (in particular Move) to avoid the transient to
-   *  be triggered from a move operation.
-   */
-  void hover_reset ();
+  virtual void hover_reset ();
 
 #if defined (HAVE_QT)
 public slots:

src/laybasic/laybasic/layViewObject.cc

@@ -1051,7 +1051,15 @@ ViewObjectUI::drag_cancel ()
   }
 }
 
-namespace 
+void
+ViewObjectUI::hover_reset ()
+{
+  for (service_iterator svc = begin_services (); svc != end_services (); ++svc) {
+    (*svc)->hover_reset ();
+  }
+}
+
+namespace
 {
   struct z_order_compare_f
   {

src/laybasic/laybasic/layViewObject.h

@@ -147,6 +147,17 @@ public:
   virtual bool drop_event (const db::DPoint & /*p*/, const DragDropDataBase * /*data*/) { return false; }
 #endif
 
+  /**
+   *  @brief Hover reset request
+   *
+   *  This event is issued for services providing some "hover" mode - i.e. capture
+   *  mouse move events and start a timer on them.
+   *
+   *  The implementation of this event should cancel this timer and
+   *  not raise a hover condition.
+   */
+  virtual void hover_reset () { }
+
   /**
    *  @brief Mouse press event handler
    *
@@ -605,6 +616,11 @@ public:
    */
   void drag_cancel ();
 
+  /**
+   *  @brief Calls hover_reset on all services
+   */
+  void hover_reset ();
+
   /**
    *  @brief CanvasPlane rendering 
    *