1 files changed, 116 insertions, 0 deletions
diff --git a/src/ui/knot/knot-holder.h b/src/ui/knot/knot-holder.h
new file mode 100644
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+++ b/src/ui/knot/knot-holder.h
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_KNOTHOLDER_H
+#define SEEN_SP_KNOTHOLDER_H
+
+/*
+ * KnotHolder - Hold SPKnot list and manage signals
+ *
+ * Author:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Maximilian Albert <maximilian.albert@gmail.com>
+ *
+ * Copyright (C) 1999-2001 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2001 Mitsuru Oka
+ * Copyright (C) 2008 Maximilian Albert
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ *
+ */
+
+#include <2geom/forward.h>
+#include <2geom/affine.h>
+#include <list>
+#include <sigc++/connection.h>
+
+namespace Inkscape {
+namespace UI {
+class ShapeEditor;
+}
+namespace XML {
+class Node;
+}
+namespace LivePathEffect {
+class PowerStrokePointArrayParamKnotHolderEntity;
+class NodeSatelliteArrayParam;
+class FilletChamferKnotHolderEntity;
+}
+}
+
+class KnotHolderEntity;
+class SPItem;
+class SPDesktop;
+class SPKnot;
+
+/* fixme: Think how to make callbacks most sensitive (Lauris) */
+typedef void (* SPKnotHolderReleasedFunc) (SPItem *item);
+
+class KnotHolder {
+public:
+    KnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler);
+    virtual ~KnotHolder();
+
+    KnotHolder() = delete; // declared but not defined
+
+    void update_knots();
+    void unselect_knots();
+    void knot_mousedown_handler(SPKnot *knot, unsigned int state);
+    void knot_moved_handler(SPKnot *knot, Geom::Point const &p, unsigned int state);
+    void knot_clicked_handler(SPKnot *knot, unsigned int state);
+    void knot_ungrabbed_handler(SPKnot *knot, unsigned int state);
+    void transform_selected(Geom::Affine transform);
+    void add(KnotHolderEntity *e);
+
+    void add_pattern_knotholder();
+    void add_hatch_knotholder();
+    void add_filter_knotholder();
+
+    void setEditTransform(Geom::Affine edit_transform);
+    Geom::Affine getEditTransform() const { return _edit_transform; }
+
+    bool knot_selected() const;
+    bool knot_mouseover() const;
+
+    SPDesktop *getDesktop() { return desktop; }
+    SPItem *getItem() { return item; }
+    bool is_dragging() const { return dragging; }
+
+    friend class Inkscape::UI::ShapeEditor; // FIXME why?
+    friend class Inkscape::LivePathEffect::NodeSatelliteArrayParam;                    // why?
+    friend class Inkscape::LivePathEffect::PowerStrokePointArrayParamKnotHolderEntity; // why?
+    friend class Inkscape::LivePathEffect::FilletChamferKnotHolderEntity; // why?
+
+protected:
+
+    SPDesktop *desktop;
+    SPItem *item; // TODO: Remove this and keep the actual item (e.g., SPRect etc.) in the item-specific knotholders
+    Inkscape::XML::Node *repr; ///< repr of the item, for setting and releasing listeners.
+    std::list<KnotHolderEntity *> entity;
+
+    SPKnotHolderReleasedFunc released;
+
+    bool local_change; ///< if true, no need to recreate knotholder if repr was changed.
+
+    bool dragging;
+
+    Geom::Affine _edit_transform;
+};
+
+/**
+void knot_clicked_handler(SPKnot *knot, guint state, gpointer data);
+void knot_moved_handler(SPKnot *knot, Geom::Point const *p, guint state, gpointer data);
+void knot_ungrabbed_handler(SPKnot *knot, unsigned int state, KnotHolder *kh);
+**/
+
+#endif // SEEN_SP_KNOTHOLDER_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :