Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 132 insertions, 0 deletions

diff --git a/src/object-snapper.h b/src/object-snapper.h
new file mode 100644
index 0000000..ac40dbc
--- /dev/null
+++ b/src/object-snapper.h
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_OBJECT_SNAPPER_H
+#define SEEN_OBJECT_SNAPPER_H
+/*
+ * Authors:
+ *   Carl Hetherington <inkscape@carlh.net>
+ *   Diederik van Lierop <mail@diedenrezi.nl>
+ *
+ * Copyright (C) 2005 - 2011 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "snapper.h"
+#include "snap-candidate.h"
+
+class SPDesktop;
+class SPNamedView;
+class SPItem;
+class SPObject;
+class SPPath;
+
+namespace Inkscape
+{
+
+/**
+ * Snapping things to objects.
+ */
+class ObjectSnapper : public Snapper
+{
+
+public:
+    ObjectSnapper(SnapManager *sm, Geom::Coord const d);
+    ~ObjectSnapper() override;
+
+    /**
+     * @return true if this Snapper will snap at least one kind of point.
+     */
+    bool ThisSnapperMightSnap() const override;
+
+    /**
+     * @return Snap tolerance (desktop coordinates); depends on current zoom so that it's always the same in screen pixels.
+     */
+    Geom::Coord getSnapperTolerance() const override; //returns the tolerance of the snapper in screen pixels (i.e. independent of zoom)
+
+    bool getSnapperAlwaysSnap() const override; //if true, then the snapper will always snap, regardless of its tolerance
+
+    void freeSnap(IntermSnapResults &isr,
+                  Inkscape::SnapCandidatePoint const &p,
+                  Geom::OptRect const &bbox_to_snap,
+                  std::vector<SPItem const *> const *it,
+                  std::vector<SnapCandidatePoint> *unselected_nodes) const override;
+
+    void constrainedSnap(IntermSnapResults &isr,
+                  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 override;
+
+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<SnapCandidateItem> *_candidates;
+    std::vector<SnapCandidatePoint> *_points_to_snap_to;
+    std::vector<SnapCandidatePath > *_paths_to_snap_to;
+
+    /**
+     * Find all items within snapping range.
+     * @param parent Pointer to the document's root, or to a clipped path or mask object.
+     * @param it List of items to ignore.
+     * @param bbox_to_snap Bounding box hulling the whole bunch of points, all from the same selection and having the same transformation.
+     * @param clip_or_mask The parent object being passed is either a clip or mask.
+     */
+    void _findCandidates(SPObject* parent,
+                       std::vector<SPItem const *> const *it,
+                       bool const &first_point,
+                       Geom::Rect const &bbox_to_snap,
+                       bool const _clip_or_mask,
+                       Geom::Affine const additional_affine) const;
+
+    void _snapNodes(IntermSnapResults &isr,
+                      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 _snapTranslatingGuide(IntermSnapResults &isr,
+                     Geom::Point const &p,
+                     Geom::Point const &guide_normal) const;
+
+    void _collectNodes(Inkscape::SnapSourceType const &t,
+                  bool const &first_point) const;
+
+    void _snapPaths(IntermSnapResults &isr,
+                      Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
+                      std::vector<Inkscape::SnapCandidatePoint> *unselected_nodes, // in desktop coordinates
+                      SPPath const *selected_path) const;
+
+    void _snapPathsConstrained(IntermSnapResults &isr,
+                 Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
+                 SnapConstraint const &c,
+                 Geom::Point const &p_proj_on_constraint) const;
+
+    void _snapPathsTangPerp(bool snap_tang,
+                            bool snap_perp,
+                            IntermSnapResults &isr,
+                            SnapCandidatePoint const &p,
+                            Geom::Curve const *curve,
+                            SPDesktop const *dt) const;
+
+    bool isUnselectedNode(Geom::Point const &point, std::vector<Inkscape::SnapCandidatePoint> const *unselected_nodes) const;
+
+    /**
+     * Returns index of first NR_END bpath in array.
+     */
+    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<SnapCandidatePoint> *points) const;
+    bool _allowSourceToSnapToTarget(SnapSourceType source, SnapTargetType target, bool strict_snapping) const;
+
+}; // end of ObjectSnapper class
+
+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
+
+#endif