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diff --git a/src/object-snapper.h b/src/object-snapper.h
index 189e96e3e249c925303a8c55edd967a4605b70f6..3784c43d0e169bd3e498cc02f5915c9e66f15f5a 100644 (file)
--- a/src/object-snapper.h
+++ b/src/object-snapper.h
*
* Authors:
* Carl Hetherington <inkscape@carlh.net>
+ * Diederik van Lierop <mail@diedenrezi.nl>
*
- * Copyright (C) 2005 Authors
+ * Copyright (C) 2005 - 2008 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "snapper.h"
+#include "sp-path.h"
+#include "splivarot.h"
struct SPNamedView;
struct SPItem;
namespace Inkscape
{
-class ObjectSnapper : public Snapper
+class SnapCandidate
+
{
public:
- ObjectSnapper(SPNamedView const *nv, NR::Coord const d);
+ SnapCandidate(SPItem* item, bool clip_or_mask, NR::Matrix _additional_affine);
+ ~SnapCandidate();
+
+ 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
+
+ /* 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
+ */
+ NR::Matrix additional_affine;
+};
- void setSnapToNodes(bool s) {
- _snap_to_nodes = s;
- }
+class ObjectSnapper : public Snapper
+{
- bool getSnapToNodes() const {
- return _snap_to_nodes;
- }
+public:
+ ObjectSnapper(SPNamedView const *nv, NR::Coord const d);
+ ~ObjectSnapper();
- void setSnapToPaths(bool s) {
- _snap_to_paths = s;
- }
+ 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
- bool getSnapToPaths() const {
- return _snap_to_paths;
- }
+ void setSnapToItemNode(bool s) {_snap_to_itemnode = s;}
+ bool getSnapToItemNode() const {return _snap_to_itemnode;}
+ void setSnapToItemPath(bool s) {_snap_to_itempath = s;}
+ bool getSnapToItemPath() const {return _snap_to_itempath;}
+ void setSnapToBBoxNode(bool s) {_snap_to_bboxnode = s;}
+ bool getSnapToBBoxNode() const {return _snap_to_bboxnode;}
+ void setSnapToBBoxPath(bool s) {_snap_to_bboxpath = s;}
+ bool getSnapToBBoxPath() const {return _snap_to_bboxpath;}
+ void setSnapToPageBorder(bool s) {_snap_to_page_border = s;}
+ bool getSnapToPageBorder() const {return _snap_to_page_border;}
+ void setIncludeItemCenter(bool s) {_include_item_center = s;}
+ bool getIncludeItemCenter() const {return _include_item_center;}
+ void setStrictSnapping(bool enabled) {_strict_snapping = enabled;}
+ void guideSnap(SnappedConstraints &sc,
+ NR::Point const &p,
+ NR::Point const &guide_normal) const;
-private:
- SnappedPoint _doFreeSnap(NR::Point const &p,
- std::list<SPItem const *> const &it) const;
+ bool ThisSnapperMightSnap() const;
+ bool GuidesMightSnap() const;
+
+ void freeSnap(SnappedConstraints &sc,
+ Inkscape::Snapper::PointType const &t,
+ NR::Point const &p,
+ bool const &first_point,
+ boost::optional<NR::Rect> const &bbox_to_snap,
+ std::vector<SPItem const *> const *it,
+ std::vector<NR::Point> *unselected_nodes) const;
- SnappedPoint _doConstrainedSnap(NR::Point const &p,
- NR::Point const &c,
- std::list<SPItem const *> const &it) const;
+ void constrainedSnap(SnappedConstraints &sc,
+ Inkscape::Snapper::PointType const &t,
+ NR::Point const &p,
+ bool const &first_point,
+ boost::optional<NR::Rect> const &bbox_to_snap,
+ ConstraintLine const &c,
+ std::vector<SPItem const *> const *it) 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<NR::Point> *_points_to_snap_to;
+ std::vector<Geom::PathVector*> *_paths_to_snap_to;
+
+ void _findCandidates(SPObject* parent,
+ std::vector<SPItem const *> const *it,
+ bool const &first_point,
+ NR::Rect const &bbox_to_snap,
+ DimensionToSnap snap_dim,
+ bool const _clip_or_mask,
+ NR::Matrix const additional_affine) const;
+
+ void _snapNodes(SnappedConstraints &sc,
+ Inkscape::Snapper::PointType const &t,
+ NR::Point const &p,
+ bool const &first_point,
+ std::vector<NR::Point> *unselected_nodes) const;
+
+ void _snapTranslatingGuideToNodes(SnappedConstraints &sc,
+ Inkscape::Snapper::PointType const &t,
+ NR::Point const &p,
+ NR::Point const &guide_normal) const;
+
+ void _collectNodes(Inkscape::Snapper::PointType const &t,
+ bool const &first_point) const;
+
+ void _snapPaths(SnappedConstraints &sc,
+ Inkscape::Snapper::PointType const &t,
+ NR::Point const &p,
+ bool const &first_point,
+ std::vector<NR::Point> *unselected_nodes,
+ SPPath const *selected_path) const;
+
+ void _snapPathsConstrained(SnappedConstraints &sc,
+ Inkscape::Snapper::PointType const &t,
+ NR::Point const &p,
+ bool const &first_point,
+ ConstraintLine const &c) const;
+
+ bool isUnselectedNode(NR::Point const &point, std::vector<NR::Point> const *unselected_nodes) const;
- void _findCandidates(std::list<SPItem*>& c,
- SPObject* r,
- std::list<SPItem const *> const &it,
- NR::Point const &p) const;
+ void _collectPaths(Inkscape::Snapper::PointType const &t,
+ 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<NR::Point> *points) const;
- void _snapNodes(Inkscape::SnappedPoint &s, NR::Point const &p, std::list<SPItem*> const &cand) const;
- void _snapPaths(Inkscape::SnappedPoint &s, NR::Point const &p, std::list<SPItem*> const &cand) const;
+ bool _snap_to_itemnode;
+ bool _snap_to_itempath;
+ bool _snap_to_bboxnode;
+ bool _snap_to_bboxpath;
+ bool _snap_to_page_border;
- bool _snap_to_nodes;
- bool _snap_to_paths;
+ //If enabled, then bbox corners will only snap to bboxes,
+ //and nodes will only snap to nodes and paths. We will not
+ //snap bbox corners to nodes, or nodes to bboxes.
+ //(snapping to grids and guides is not affected by this)
+ bool _strict_snapping;
+ bool _include_item_center;
};
}