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[inkscape.git] / src / object-snapper.h
index 9a6978d4705e5c305d2b8f99ea4e1aeabaae7217..6bde3dd391a531fd7fc75bea43b0df780e67903d 100644 (file)
@@ -17,6 +17,7 @@
 #include "snapper.h"
 #include "sp-path.h"
 #include "splivarot.h"
+#include "snap-candidate.h"
 
 struct SPNamedView;
 struct SPItem;
@@ -25,117 +26,90 @@ struct SPObject;
 namespace Inkscape
 {
 
-class SnapCandidate
-
+class ObjectSnapper : public Snapper
 {
+
 public:
-    SnapCandidate(SPItem* item, bool clip_or_mask, Geom::Matrix _additional_affine);
-    ~SnapCandidate();
+    ObjectSnapper(SnapManager *sm, Geom::Coord const d);
+    ~ObjectSnapper();
 
-    SPItem* item;        // An item that is to be considered for snapping to
-    bool clip_or_mask;    // If true, then item refers to a clipping path or a mask
+    void guideFreeSnap(SnappedConstraints &sc,
+                   Geom::Point const &p,
+                   Geom::Point const &guide_normal) const;
 
-    /* To find out the absolute position of a clipping path or mask, we not only need to know
-     * the transformation of the clipping path or mask itself, but also the transformation of
-     * the object to which the clip or mask is being applied; that transformation is stored here
-     */
-    Geom::Matrix additional_affine;
-};
+    void guideConstrainedSnap(SnappedConstraints &sc,
+                       Geom::Point const &p,
+                       Geom::Point const &guide_normal,
+                       SnapConstraint const &c) const;
 
-class ObjectSnapper : public Snapper
-{
+    bool ThisSnapperMightSnap() const;
 
-public:
-       ObjectSnapper(SnapManager *sm, Geom::Coord const d);
-    ~ObjectSnapper();
+    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
 
-       enum DimensionToSnap {
-               GUIDE_TRANSL_SNAP_X, // For snapping a vertical guide (normal in the X-direction) to objects,
-               GUIDE_TRANSL_SNAP_Y, // For snapping a horizontal guide (normal in the Y-direction) to objects
-               ANGLED_GUIDE_TRANSL_SNAP, // For snapping an angled guide, while translating it accross the desktop
-               ANGLED_GUIDE_ROT_SNAP, // For snapping an angled guide, while rotating it around some pivot point
-               TRANSL_SNAP_XY}; // All other cases; for snapping to objects, other than guides
-
-       void guideSnap(SnappedConstraints &sc,
-                                  Geom::Point const &p,
-                                  Geom::Point const &guide_normal) const;
-
-       bool ThisSnapperMightSnap() const;
-       bool GuidesMightSnap() const;
-
-       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
-
-       void freeSnap(SnappedConstraints &sc,
-                                 Inkscape::SnapPreferences::PointType const &t,
-                                 Geom::Point const &p,
-                                 bool const &first_point,
-                                 Geom::OptRect const &bbox_to_snap,
-                                 std::vector<SPItem const *> const *it,
-                                 std::vector<Geom::Point> *unselected_nodes) const;
-
-       void constrainedSnap(SnappedConstraints &sc,
-                                 Inkscape::SnapPreferences::PointType const &t,
-                                 Geom::Point const &p,
-                                 bool const &first_point,
-                                 Geom::OptRect const &bbox_to_snap,
-                                 ConstraintLine const &c,
-                                 std::vector<SPItem const *> const *it) const;
+    void freeSnap(SnappedConstraints &sc,
+                  Inkscape::SnapCandidatePoint const &p,
+                  Geom::OptRect const &bbox_to_snap,
+                  std::vector<SPItem const *> const *it,
+                  std::vector<SnapCandidatePoint> *unselected_nodes) const;
+
+    void constrainedSnap(SnappedConstraints &sc,
+                  Inkscape::SnapCandidatePoint const &p,
+                  Geom::OptRect const &bbox_to_snap,
+                  SnapConstraint const &c,
+                  std::vector<SPItem const *> const *it,
+                  std::vector<SnapCandidatePoint> *unselected_nodes) const;
 
 private:
     //store some lists of candidates, points and paths, so we don't have to rebuild them for each point we want to snap
-    std::vector<SnapCandidate> *_candidates;
-    std::vector<Geom::Point> *_points_to_snap_to;
-    std::vector<std::pair<Geom::PathVector*, SnapTargetType> > *_paths_to_snap_to;
+    std::vector<SnapCandidateItem> *_candidates;
+    std::vector<SnapCandidatePoint> *_points_to_snap_to;
+    std::vector<SnapCandidatePath > *_paths_to_snap_to;
 
     void _findCandidates(SPObject* parent,
                        std::vector<SPItem const *> const *it,
                        bool const &first_point,
                        Geom::Rect const &bbox_to_snap,
-                       DimensionToSnap snap_dim,
                        bool const _clip_or_mask,
                        Geom::Matrix const additional_affine) const;
 
     void _snapNodes(SnappedConstraints &sc,
-                      Inkscape::SnapPreferences::PointType const &t,
-                      Geom::Point const &p, // in desktop coordinates
-                      bool const &first_point,
-                      std::vector<Geom::Point> *unselected_nodes) const; // in desktop coordinates
+                      Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
+                      std::vector<SnapCandidatePoint> *unselected_nodes,
+                      SnapConstraint const &c = SnapConstraint(),
+                      Geom::Point const &p_proj_on_constraint = Geom::Point()) const;
 
-    void _snapTranslatingGuideToNodes(SnappedConstraints &sc,
-                     Inkscape::SnapPreferences::PointType const &t,
+    void _snapTranslatingGuide(SnappedConstraints &sc,
                      Geom::Point const &p,
                      Geom::Point const &guide_normal) const;
 
-    void _collectNodes(Inkscape::SnapPreferences::PointType const &t,
+    void _collectNodes(Inkscape::SnapSourceType const &t,
                   bool const &first_point) const;
 
     void _snapPaths(SnappedConstraints &sc,
-                      Inkscape::SnapPreferences::PointType const &t,
-                      Geom::Point const &p,    // in desktop coordinates
-                      bool const &first_point,
-                      std::vector<Geom::Point> *unselected_nodes, // in desktop coordinates
+                      Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
+                      std::vector<Inkscape::SnapCandidatePoint> *unselected_nodes, // in desktop coordinates
                       SPPath const *selected_path) const;
 
     void _snapPathsConstrained(SnappedConstraints &sc,
-                 Inkscape::SnapPreferences::PointType const &t,
-                 Geom::Point const &p, // in desktop coordinates
-                 bool const &first_point,
-                 ConstraintLine const &c) const;
+                 Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
+                 SnapConstraint const &c,
+                 Geom::Point const &p_proj_on_constraint) const;
 
-    bool isUnselectedNode(Geom::Point const &point, std::vector<Geom::Point> const *unselected_nodes) const;
+    bool isUnselectedNode(Geom::Point const &point, std::vector<Inkscape::SnapCandidatePoint> const *unselected_nodes) const;
 
-    void _collectPaths(Inkscape::SnapPreferences::PointType const &t,
-                  bool const &first_point) const;
+    void _collectPaths(Geom::Point p,
+                      Inkscape::SnapSourceType const source_type,
+                      bool const &first_point) const;
 
     void _clear_paths() const;
     Geom::PathVector* _getBorderPathv() const;
     Geom::PathVector* _getPathvFromRect(Geom::Rect const rect) const;
-    void _getBorderNodes(std::vector<Geom::Point> *points) const;
+    void _getBorderNodes(std::vector<SnapCandidatePoint> *points) const;
 
 }; // end of ObjectSnapper class
 
-void getBBoxPoints(Geom::OptRect const bbox, std::vector<Geom::Point> *points, bool const includeCorners, bool const includeLineMidpoints, bool const includeObjectMidpoints);
+void getBBoxPoints(Geom::OptRect const bbox, std::vector<SnapCandidatePoint> *points, bool const isTarget, bool const includeCorners, bool const includeLineMidpoints, bool const includeObjectMidpoints);
 
 } // end of namespace Inkscape