Code

bug fix about closed path.
[inkscape.git] / src / snap.h
index 8bab5b0cf1d951b7c8f23a0918e008cd4964a9ce..eba18f5deae5ce6e926672d85c76b43b860be3b4 100644 (file)
@@ -27,6 +27,7 @@
 
 #include "guide-snapper.h"
 #include "object-snapper.h"
+#include "snap-preferences.h"
 
 class SPNamedView;
 
@@ -41,155 +42,152 @@ class SPNamedView;
 class SnapManager
 {
 public:
-    SnapManager(SPNamedView const *v);
+       enum Transformation {
+        TRANSLATION,
+        SCALE,
+        STRETCH,
+        SKEW
+    };
+
+       SnapManager(SPNamedView const *v);
 
     typedef std::list<const Inkscape::Snapper*> SnapperList;
 
-    bool SomeSnapperMightSnap() const;
-
-    Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
-                                    NR::Point const &p,
-                                    SPItem const *it,
-                                    NR::Maybe<NR::Point> point_not_to_snap_to = NR::Nothing()) const;
-                                    
-    Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
-                                    NR::Point const &p,
-                                    SPItem const *it,
-                                    std::vector<NR::Point> *unselected_nodes) const;
-    
-    Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
-                                    NR::Point const &p,
-                                    bool const &first_point,
-                                    std::vector<NR::Point> &points_to_snap,
-                                    std::list<SPItem const *> const &it,
-                                    std::vector<NR::Point> *unselected_nodes) const;
-
-    Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
-                                           NR::Point const &p,
-                                           Inkscape::Snapper::ConstraintLine const &c,
-                                           SPItem const *it) const;
-    
-    Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
-                                           NR::Point const &p,
-                                           bool const &first_point,
-                                           std::vector<NR::Point> &points_to_snap,
-                                           Inkscape::Snapper::ConstraintLine const &c,
-                                           std::list<SPItem const *> const &it) const;
-                                           
-    Inkscape::SnappedPoint guideSnap(NR::Point const &p,
-                                     NR::Point const &guide_normal) const;
-
-    Inkscape::SnappedPoint freeSnapTranslation(Inkscape::Snapper::PointType t,
-                                               std::vector<NR::Point> const &p,
-                                               std::list<SPItem const *> const &it,
-                                               NR::Point const &tr) const;
-
-    Inkscape::SnappedPoint constrainedSnapTranslation(Inkscape::Snapper::PointType t,
-                                                      std::vector<NR::Point> const &p,
-                                                      std::list<SPItem const *> const &it,
-                                                      Inkscape::Snapper::ConstraintLine const &c,
-                                                      NR::Point const &tr) const;
-
-    Inkscape::SnappedPoint freeSnapScale(Inkscape::Snapper::PointType t,
-                                         std::vector<NR::Point> const &p,
-                                         std::list<SPItem const *> const &it,
-                                         NR::scale const &s,
-                                         NR::Point const &o) const;
-
-    Inkscape::SnappedPoint constrainedSnapScale(Inkscape::Snapper::PointType t,
-                                                std::vector<NR::Point> const &p,
-                                                std::list<SPItem const *> const &it,
-                                                NR::scale const &s,
-                                                NR::Point const &o) const;
-
-    Inkscape::SnappedPoint constrainedSnapStretch(Inkscape::Snapper::PointType t,
-                                                   std::vector<NR::Point> const &p,
-                                                   std::list<SPItem const *> const &it,
-                                                   NR::Coord const &s,
-                                                   NR::Point const &o,
-                                                   NR::Dim2 d,
-                                                   bool uniform) const;
-
-    Inkscape::SnappedPoint freeSnapSkew(Inkscape::Snapper::PointType t,
-                                        std::vector<NR::Point> const &p,
-                                        std::list<SPItem const *> const &it,
-                                        NR::Coord const &s,
-                                        NR::Point const &o,
-                                        NR::Dim2 d) const;
-                                            
-       Inkscape::SnappedPoint guideSnap(NR::Point const &p,
-                           Inkscape::ObjectSnapper::DimensionToSnap const snap_dim) const;
-  
+    bool someSnapperMightSnap() const;
+    bool gridSnapperMightSnap() const;
+
+    void setup(SPDesktop const *desktop,
+                       bool snapindicator = true,
+                       SPItem const *item_to_ignore = NULL,
+                       std::vector<std::pair<Geom::Point, int> > *unselected_nodes = NULL,
+                       SPGuide *guide_to_ignore = NULL);
+
+    void setup(SPDesktop const *desktop,
+               bool snapindicator,
+               std::vector<SPItem const *> &items_to_ignore,
+               std::vector<std::pair<Geom::Point, int> > *unselected_nodes = NULL,
+               SPGuide *guide_to_ignore = NULL);
+
+    // freeSnapReturnByRef() is preferred over freeSnap(), because it only returns a
+    // point if snapping has occurred (by overwriting p); otherwise p is untouched
+    void freeSnapReturnByRef(Inkscape::SnapPreferences::PointType point_type,
+                                                       Geom::Point &p,
+                                                       Inkscape::SnapSourceType const source_type,
+                                                       bool first_point = true,
+                                                       Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
+
+
+    Inkscape::SnappedPoint freeSnap(Inkscape::SnapPreferences::PointType point_type,
+                                                                       Geom::Point const &p,
+                                                           Inkscape::SnapSourceType const &source_type,
+                                       bool first_point = true,
+                                    Geom::OptRect const &bbox_to_snap = Geom::OptRect() ) const;
+
+    Geom::Point multipleOfGridPitch(Geom::Point const &t) const;
+
+    // constrainedSnapReturnByRef() is preferred over constrainedSnap(), because it only returns a
+    // point, by overwriting p, if snapping has occurred; otherwise p is untouched
+    void constrainedSnapReturnByRef(Inkscape::SnapPreferences::PointType point_type,
+                                                                       Geom::Point &p,
+                                                                       Inkscape::SnapSourceType const source_type,
+                                                                       Inkscape::Snapper::ConstraintLine const &constraint,
+                                                                       bool first_point = true,
+                                                                       Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
+
+    Inkscape::SnappedPoint constrainedSnap(Inkscape::SnapPreferences::PointType point_type,
+                                                                                  Geom::Point const &p,
+                                                                                  Inkscape::SnapSourceType const &source_type,
+                                                                                  Inkscape::Snapper::ConstraintLine const &constraint,
+                                           bool first_point = true,
+                                           Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
+
+    void guideSnap(Geom::Point &p, Geom::Point const &guide_normal) const;
+
+    Inkscape::SnappedPoint freeSnapTranslation(Inkscape::SnapPreferences::PointType point_type,
+                                               std::vector<std::pair<Geom::Point, int> > const &p,
+                                               Geom::Point const &pointer,
+                                               Geom::Point const &tr) const;
+
+    Inkscape::SnappedPoint constrainedSnapTranslation(Inkscape::SnapPreferences::PointType point_type,
+                                                      std::vector<std::pair<Geom::Point, int> > const &p,
+                                                      Geom::Point const &pointer,
+                                                      Inkscape::Snapper::ConstraintLine const &constraint,
+                                                      Geom::Point const &tr) const;
+
+    Inkscape::SnappedPoint freeSnapScale(Inkscape::SnapPreferences::PointType point_type,
+                                         std::vector<std::pair<Geom::Point, int> > const &p,
+                                         Geom::Point const &pointer,
+                                         Geom::Scale const &s,
+                                         Geom::Point const &o) const;
+
+    Inkscape::SnappedPoint constrainedSnapScale(Inkscape::SnapPreferences::PointType point_type,
+                                                std::vector<std::pair<Geom::Point, int> > const &p,
+                                                Geom::Point const &pointer,
+                                                Geom::Scale const &s,
+                                                Geom::Point const &o) const;
+
+    Inkscape::SnappedPoint constrainedSnapStretch(Inkscape::SnapPreferences::PointType point_type,
+                                                  std::vector<std::pair<Geom::Point, int> > const &p,
+                                                  Geom::Point const &pointer,
+                                                  Geom::Coord const &s,
+                                                  Geom::Point const &o,
+                                                  Geom::Dim2 d,
+                                                  bool uniform) const;
+
+    Inkscape::SnappedPoint constrainedSnapSkew(Inkscape::SnapPreferences::PointType point_type,
+                                               std::vector<std::pair<Geom::Point, int> > const &p,
+                                               Geom::Point const &pointer,
+                                               Inkscape::Snapper::ConstraintLine const &constraint,
+                                               Geom::Point const &s, // s[0] = skew factor, s[1] = scale factor
+                                               Geom::Point const &o,
+                                               Geom::Dim2 d) const;
 
     Inkscape::GuideSnapper guide;      ///< guide snapper
     Inkscape::ObjectSnapper object;    ///< snapper to other objects
+    Inkscape::SnapPreferences snapprefs;
 
     SnapperList getSnappers() const;
     SnapperList getGridSnappers() const;
-    
-    void setSnapModeBBox(bool enabled);
-    void setSnapModeNode(bool enabled);
-    void setSnapModeGuide(bool enabled);
-    bool getSnapModeBBox() const;
-    bool getSnapModeNode() const;
-    bool getSnapModeGuide() const;
-    
-    void setSnapIntersectionGG(bool enabled) {_intersectionGG = enabled;}
-    void setSnapIntersectionLS(bool enabled) {_intersectionLS = enabled;}
-    bool getSnapIntersectionGG() { return _intersectionGG;}
-    bool getSnapIntersectionLS() { return _intersectionLS;}    
-
-    void setIncludeItemCenter(bool enabled)    {
-        _include_item_center = enabled;
-        // also store a local copy in the object-snapper instead of passing it through many functions
-        object.setIncludeItemCenter(enabled);
-       }
-    
-    bool getIncludeItemCenter() const {
-        return _include_item_center;
-    }
-    
-    void setSnapEnabledGlobally(bool enabled) {
-        _snap_enabled_globally = enabled;   
-    }
-        
-    bool getSnapEnabledGlobally() const {
-        return _snap_enabled_globally;   
-    }
-    
-    void toggleSnapEnabledGlobally() {
-        _snap_enabled_globally = !_snap_enabled_globally;   
-    }
-        
+
+    SPDesktop const *getDesktop() const {return _desktop;}
+    SPNamedView const *getNamedView() const {return _named_view;}
+    SPDocument *getDocument() const;
+    SPGuide const *getGuideToIgnore() const {return _guide_to_ignore;}
+
+    bool getSnapIndicator() const {return _snapindicator;}
+
 protected:
     SPNamedView const *_named_view;
 
 private:
-
-    enum Transformation {
-        TRANSLATION,
-        SCALE,
-        STRETCH,
-        SKEW
-    };
-    
-    bool _include_item_center; //If true, snapping nodes will also snap the item's center
-    bool _intersectionGG;
-    bool _intersectionLS;
-    bool _snap_enabled_globally; //Toggles ALL snapping
-    
-    Inkscape::SnappedPoint _snapTransformed(Inkscape::Snapper::PointType type,
-                                            std::vector<NR::Point> const &points,
-                                            std::list<SPItem const *> const &ignore,
+    std::vector<SPItem const *> *_items_to_ignore;
+    SPItem const *_item_to_ignore;
+    SPGuide *_guide_to_ignore;
+    SPDesktop const *_desktop;
+    bool _snapindicator;
+    std::vector<std::pair<Geom::Point, int> > *_unselected_nodes;
+
+    Inkscape::SnappedPoint _snapTransformed(Inkscape::SnapPreferences::PointType type,
+                                            std::vector<std::pair<Geom::Point, int> > const &points,
+                                            Geom::Point const &pointer,
                                             bool constrained,
                                             Inkscape::Snapper::ConstraintLine const &constraint,
                                             Transformation transformation_type,
-                                            NR::Point const &transformation,
-                                            NR::Point const &origin,
-                                            NR::Dim2 dim,
+                                            Geom::Point const &transformation,
+                                            Geom::Point const &origin,
+                                            Geom::Dim2 dim,
                                             bool uniform) const;
-                                                
-    Inkscape::SnappedPoint findBestSnap(NR::Point const &p, SnappedConstraints &sc, bool constrained) const;
+
+    Geom::Point _transformPoint(std::pair<Geom::Point, int> const &p,
+                                            Transformation const transformation_type,
+                                            Geom::Point const &transformation,
+                                            Geom::Point const &origin,
+                                            Geom::Dim2 const dim,
+                                            bool const uniform) const;
+
+    void _displaySnapsource(Inkscape::SnapPreferences::PointType point_type, std::pair<Geom::Point, int> const &p) const;
+
+    Inkscape::SnappedPoint findBestSnap(Geom::Point const &p, Inkscape::SnapSourceType const source_type, SnappedConstraints &sc, bool constrained) const;
 };
 
 #endif /* !SEEN_SNAP_H */