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diff --git a/src/live_effects/lpe-path_length.h b/src/live_effects/lpe-path_length.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef INKSCAPE_LPE_PATH_LENGTH_H
+#define INKSCAPE_LPE_PATH_LENGTH_H
+
+/** \file
+ * LPE <path_length> implementation.
+ */
+
+/*
+ * Authors:
+ * Maximilian Albert <maximilian.albert@gmail.com>
+ *
+ * Copyright (C) 2007-2008 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "live_effects/effect.h"
+#include "live_effects/parameter/text.h"
+#include "live_effects/parameter/unit.h"
+#include "live_effects/parameter/bool.h"
+
+namespace Inkscape {
+namespace LivePathEffect {
+
+class LPEPathLength : public Effect {
+public:
+ LPEPathLength(LivePathEffectObject *lpeobject);
+ ~LPEPathLength() override;
+
+ Geom::Piecewise<Geom::D2<Geom::SBasis> > doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in) override;
+
+private:
+ LPEPathLength(const LPEPathLength&) = delete;
+ LPEPathLength& operator=(const LPEPathLength&) = delete;
+ ScalarParam scale;
+ TextParamInternal info_text;
+ UnitParam unit;
+ BoolParam display_unit;
+};
+
+} //namespace LivePathEffect
+} //namespace Inkscape
+
+#endif
+
+/*
+ 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 :