1 files changed, 125 insertions, 0 deletions
diff --git a/src/live_effects/parameter/path.h b/src/live_effects/parameter/path.h
new file mode 100644
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+++ b/src/live_effects/parameter/path.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef INKSCAPE_LIVEPATHEFFECT_PARAMETER_PATH_H
+#define INKSCAPE_LIVEPATHEFFECT_PARAMETER_PATH_H
+
+/*
+ * Inkscape::LivePathEffectParameters
+ *
+ * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <glib.h>
+#include <2geom/path.h>
+
+#include "live_effects/parameter/parameter.h"
+#include "live_effects/parameter/path-reference.h"
+#include <cstddef>
+#include <sigc++/sigc++.h>
+
+namespace Inkscape {
+
+namespace LivePathEffect {
+
+class PathParam : public Parameter {
+public:
+    PathParam ( const Glib::ustring& label,
+                const Glib::ustring& tip,
+                const Glib::ustring& key,
+                Inkscape::UI::Widget::Registry* wr,
+                Effect* effect,
+                const gchar * default_value = "M0,0 L1,1");
+    ~PathParam() override;
+
+    Geom::PathVector const & get_pathvector() const;
+    void reload();
+    Geom::Affine get_relative_affine();
+    Geom::Piecewise<Geom::D2<Geom::SBasis> > const & get_pwd2();
+
+    Gtk::Widget * param_newWidget() override;
+    std::vector<SPObject *> param_get_satellites() override;
+    bool param_readSVGValue(const gchar * strvalue) override;
+    Glib::ustring param_getSVGValue() const override;
+    Glib::ustring param_getDefaultSVGValue() const override;
+
+    void param_set_default() override;
+    void param_update_default(const gchar * default_value) override;
+    void param_set_and_write_default();
+    void set_new_value (Geom::PathVector const &newpath, bool write_to_svg);
+    void set_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > const &newpath, bool write_to_svg);
+    void set_buttons(bool edit_button, bool copy_button, bool paste_button, bool link_button);
+    void setUpdating(bool updating) {_updating = updating;};
+    void param_editOncanvas(SPItem * item, SPDesktop * dt) override;
+    void param_setup_nodepath(Inkscape::NodePath::Path *np) override;
+    void addCanvasIndicators(SPLPEItem const* lpeitem, std::vector<Geom::PathVector> &hp_vec) override;
+
+    void param_transform_multiply(Geom::Affine const &postmul, bool set) override;
+    void setFromOriginalD(bool from_original_d){ _from_original_d = from_original_d; };
+
+    sigc::signal <void> signal_path_pasted;
+    sigc::signal <void> signal_path_changed;
+    bool changed; /* this gets set whenever the path is changed (this is set to true, and then the signal_path_changed signal is emitted).
+                   * the user must set it back to false if she wants to use it sensibly */
+    SPObject * getObject() const { if (ref.isAttached()) {return ref.getObject();} return nullptr;}
+    void paste_param_path(const char *svgd);
+    void on_paste_button_click();
+    void linkitem(Glib::ustring pathid);
+    ParamType paramType() const override { return ParamType::PATH; };
+
+protected:
+    Geom::PathVector _pathvector;   // this is primary data storage, since it is closest to SVG.
+
+    Geom::Piecewise<Geom::D2<Geom::SBasis> > _pwd2; // secondary, hence the bool must_recalculate_pwd2
+    bool must_recalculate_pwd2; // set when _pathvector was updated, but _pwd2 not
+    void ensure_pwd2();  // ensures _pwd2 is up to date
+
+    gchar * href;     // contains link to other object, e.g. "#path2428", NULL if PathParam contains pathdata itself
+    PathReference ref;
+    friend class LPEFillBetweenStrokes;
+    friend class LPEPatternAlongPath;
+    friend class LPEBendPath;
+    friend class LPECurveStitch;
+    friend class LPEAttachPath;
+    friend class LPEEnvelope;
+    friend class LPEBoundingBox;
+    friend class LPEInterpolate;
+    friend class LPEVonKoch;
+    sigc::connection ref_changed_connection;
+    sigc::connection linked_delete_connection;
+    sigc::connection linked_modified_connection;
+    sigc::connection linked_transformed_connection;
+    void ref_changed(SPObject *old_ref, SPObject *new_ref);
+    void unlink();
+    void start_listening(SPObject * to);
+    void quit_listening();
+    void linked_delete(SPObject *deleted);
+    void linked_modified(SPObject *linked_obj, guint flags);
+    void linked_transformed(Geom::Affine const *rel_transf, SPItem *moved_item);
+    virtual void linked_modified_callback(SPObject *linked_obj, guint flags);
+    virtual void linked_transformed_callback(Geom::Affine const * rel_transf, SPItem * /*moved_item*/) {};
+
+    void on_edit_button_click();
+    void on_copy_button_click();
+    void on_link_button_click();
+
+    void emit_changed();
+
+    gchar * defvalue;
+    bool _from_original_d;
+private:
+    bool _edit_button;
+    bool _copy_button;
+    bool _paste_button;
+    bool _link_button;
+    bool _updating = false;
+    PathParam(const PathParam&) = delete;
+    PathParam& operator=(const PathParam&) = delete;
+};
+
+
+} //namespace LivePathEffect
+
+} //namespace Inkscape
+
+#endif