add LPE extrude. it's not finished yet!

[inkscape.git] / src / snapper.h

diff --git a/src/snapper.h b/src/snapper.h
index 18967ebd9e6743753f1cadd57b895aa7917cb008..110b3d36ad5292fa721e1db7e55b76af01c5ce19 100644 (file)
--- a/src/snapper.h
+++ b/src/snapper.h
@@ -14,13 +14,12 @@
 
 #include <map>
 #include <list>
-#include "libnr/nr-coord.h"
-#include "libnr/nr-point.h"
 #include <boost/optional.hpp>
 
 #include "snapped-point.h"
 #include "snapped-line.h"
 #include "snapped-curve.h"
+#include "snap-preferences.h"
 
 struct SnappedConstraints {
     std::list<Inkscape::SnappedPoint> points;
@@ -30,7 +29,7 @@ struct SnappedConstraints {
     std::list<Inkscape::SnappedCurve> curves;
 };
 
-struct SPNamedView;
+class SnapManager;
 struct SPItem;
 
 namespace Inkscape
@@ -40,38 +39,32 @@ namespace Inkscape
 class Snapper
 {
 public:
-    Snapper() {}
-    Snapper(SPNamedView const *nv, ::Geom::Coord const d);
-    virtual ~Snapper() {}
+       Snapper() {}
+       Snapper(SnapManager *sm, ::Geom::Coord const t);
+       virtual ~Snapper() {}
 
-    /// Point types to snap.
-    typedef int PointType;
-    static const PointType SNAPPOINT_NODE;
-    static const PointType SNAPPOINT_BBOX;
-    static const PointType SNAPPOINT_GUIDE;
-
-    void setSnapFrom(PointType t, bool s);
-    bool getSnapFrom(PointType t) const;
-
-    void setSnapperTolerance(Geom::Coord t);
-    Geom::Coord getSnapperTolerance() const; //returns the tolerance of the snapper in screen pixels (i.e. independent of zoom)
-    bool getSnapperAlwaysSnap() const; //if true, then the snapper will always snap, regardless of its tolerance
+    virtual Geom::Coord getSnapperTolerance() const = 0; //returns the tolerance of the snapper in screen pixels (i.e. independent of zoom)
+    virtual bool getSnapperAlwaysSnap() const = 0; //if true, then the snapper will always snap, regardless of its tolerance
 
     /**
     *  \return true if this Snapper will snap at least one kind of point.
     */
-    virtual bool ThisSnapperMightSnap() const {return (_snap_enabled && _snap_from != 0);} // will likely be overridden by derived classes
+    virtual bool ThisSnapperMightSnap() const {return _snap_enabled;} // will likely be overridden by derived classes
 
+    // These four methods are only used for grids, for which snapping can be enabled individually
     void setEnabled(bool s);
+       void setSnapVisibleOnly(bool s);
     bool getEnabled() const {return _snap_enabled;}
+    bool getSnapVisibleOnly() const {return _snap_visible_only;}
 
     virtual void freeSnap(SnappedConstraints &/*sc*/,
-                          PointType const &/*t*/,
+                          SnapPreferences::PointType const &/*t*/,
                           Geom::Point const &/*p*/,
+                          SnapSourceType const &/*source_type*/,
                           bool const &/*first_point*/,
-                          boost::optional<Geom::Rect> const &/*bbox_to_snap*/,
+                          Geom::OptRect const &/*bbox_to_snap*/,
                           std::vector<SPItem const *> const */*it*/,
-                          std::vector<Geom::Point> */*unselected_nodes*/) const {};
+                          std::vector<std::pair<Geom::Point, int> > */*unselected_nodes*/) const {};
 
     class ConstraintLine
     {
@@ -90,10 +83,16 @@ public:
         Geom::Point getDirection() const {
             return _direction;
         }
-        
+
         void setPoint(Geom::Point const &p) {
             _point = p;
-            _has_point = true;        
+            _has_point = true;
+        }
+
+        Geom::Point projection(Geom::Point const &p) const { // returns the projection of p on this constraintline
+               Geom::Point const p1_on_cl = _has_point ? _point : p;
+                       Geom::Point const p2_on_cl = p1_on_cl + _direction;
+               return Geom::projection(p, Geom::Line(p1_on_cl, p2_on_cl));
         }
 
     private:
@@ -104,23 +103,20 @@ public:
     };
 
     virtual void constrainedSnap(SnappedConstraints &/*sc*/,
-                                 PointType const &/*t*/,
+                                                        SnapPreferences::PointType const &/*t*/,
                                  Geom::Point const &/*p*/,
+                                 SnapSourceType const &/*source_type*/,
                                  bool const &/*first_point*/,
-                                 boost::optional<Geom::Rect> const &/*bbox_to_snap*/,
+                                 Geom::OptRect const &/*bbox_to_snap*/,
                                  ConstraintLine const &/*c*/,
                                  std::vector<SPItem const *> const */*it*/) const {};
 
 protected:
-    SPNamedView const *_named_view;
-    int _snap_from; ///< bitmap of point types that we will snap from
-    bool _snap_enabled; ///< true if this snapper is enabled, otherwise false
-
-private:
-    Geom::Coord _snapper_tolerance;   ///< snap tolerance in desktop coordinates
-                                    // must be private to enforce the usage of getTolerance(), which retrieves
-                                    // the tolerance in screen pixels (making it zoom independent)
+       SnapManager *_snapmanager;
 
+       // This is only used for grids, for which snapping can be enabled individually
+       bool _snap_enabled; ///< true if this snapper is enabled, otherwise false
+       bool _snap_visible_only;
 };
 
 }