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Viewing changes to src/snap.h

  • Committer: Diederik van Lierop
  • Date: 2009-12-24 20:10:43 UTC
  • Revision ID: diederik_van_lierop_mail_at-sign_diedenrezi_dot_nl-20091224201043-txzqbq2uvs8334ei
refactoring the snapping code (laying the groundwork for my next commit which reduces snap jitter)

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src/snap.h
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class SnapManager
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{
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public:
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        enum Transformation {
 
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    enum Transformation {
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        TRANSLATION,
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        SCALE,
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        STRETCH,
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        SKEW
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    };
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        SnapManager(SPNamedView const *v);
 
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    SnapManager(SPNamedView const *v);
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    typedef std::list<const Inkscape::Snapper*> SnapperList;
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    bool gridSnapperMightSnap() const;
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    void setup(SPDesktop const *desktop,
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                        bool snapindicator = true,
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                        SPItem const *item_to_ignore = NULL,
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                        std::vector<std::pair<Geom::Point, int> > *unselected_nodes = NULL,
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                        SPGuide *guide_to_ignore = NULL);
 
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            bool snapindicator = true,
 
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            SPItem const *item_to_ignore = NULL,
 
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            std::vector<std::pair<Geom::Point, int> > *unselected_nodes = NULL,
 
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            SPGuide *guide_to_ignore = NULL);
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    void setup(SPDesktop const *desktop,
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                bool snapindicator,
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                std::vector<SPItem const *> &items_to_ignore,
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                std::vector<std::pair<Geom::Point, int> > *unselected_nodes = NULL,
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                SPGuide *guide_to_ignore = NULL);
 
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            bool snapindicator,
 
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            std::vector<SPItem const *> &items_to_ignore,
 
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            std::vector<std::pair<Geom::Point, int> > *unselected_nodes = NULL,
 
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            SPGuide *guide_to_ignore = NULL);
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    // freeSnapReturnByRef() is preferred over freeSnap(), because it only returns a
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    // point if snapping has occurred (by overwriting p); otherwise p is untouched
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    void freeSnapReturnByRef(Inkscape::SnapPreferences::PointType point_type,
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                                                        Geom::Point &p,
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                                                        Inkscape::SnapSourceType const source_type,
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                                                        bool first_point = true,
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                                                        Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
 
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                                Geom::Point &p,
 
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                                Inkscape::SnapSourceType const source_type,
 
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                                long source_num = 0,
 
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                                Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
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    Inkscape::SnappedPoint freeSnap(Inkscape::SnapPreferences::PointType point_type,
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                                                                        Geom::Point const &p,
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                                                            Inkscape::SnapSourceType const &source_type,
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                                        bool first_point = true,
 
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                                    Geom::Point const &p,
 
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                                    Inkscape::SnapSourceType const &source_type,
 
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                                    long source_num = 0,
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                                    Geom::OptRect const &bbox_to_snap = Geom::OptRect() ) const;
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    Geom::Point multipleOfGridPitch(Geom::Point const &t) const;
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    // constrainedSnapReturnByRef() is preferred over constrainedSnap(), because it only returns a
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    // point, by overwriting p, if snapping has occurred; otherwise p is untouched
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    void constrainedSnapReturnByRef(Inkscape::SnapPreferences::PointType point_type,
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                                                                        Geom::Point &p,
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                                                                        Inkscape::SnapSourceType const source_type,
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                                                                        Inkscape::Snapper::ConstraintLine const &constraint,
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                                                                        bool first_point = true,
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                                                                        Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
 
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                                    Geom::Point &p,
 
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                                    Inkscape::SnapSourceType const source_type,
 
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                                    Inkscape::Snapper::ConstraintLine const &constraint,
 
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                                    long source_num = 0,
 
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                                    Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
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    Inkscape::SnappedPoint constrainedSnap(Inkscape::SnapPreferences::PointType point_type,
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                                                                                   Geom::Point const &p,
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                                                                                   Inkscape::SnapSourceType const &source_type,
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                                                                                   Inkscape::Snapper::ConstraintLine const &constraint,
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                                                                                   bool first_point = true,
 
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                                           Geom::Point const &p,
 
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                                           Inkscape::SnapSourceType const &source_type,
 
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                                           Inkscape::Snapper::ConstraintLine const &constraint,
 
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                                           long source_num = 0,
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                                           Geom::OptRect const &bbox_to_snap = Geom::OptRect()) const;
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    void guideFreeSnap(Geom::Point &p, Geom::Point const &guide_normal, SPGuideDragType drag_type) const;