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diff --git a/src/object/filters/diffuselighting.h b/src/object/filters/diffuselighting.h
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+++ b/src/object/filters/diffuselighting.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief SVG diffuse lighting filter effect
+ *//*
+ * Authors:
+ *   Hugo Rodrigues <haa.rodrigues@gmail.com>
+ *   Jean-Rene Reinhard <jr@komite.net>
+ *
+ * Copyright (C) 2006-2007 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SP_FEDIFFUSELIGHTING_H_SEEN
+#define SP_FEDIFFUSELIGHTING_H_SEEN
+
+#include "sp-filter-primitive.h"
+#include "number-opt-number.h"
+
+#define SP_FEDIFFUSELIGHTING(obj) (dynamic_cast<SPFeDiffuseLighting*>((SPObject*)obj))
+#define SP_IS_FEDIFFUSELIGHTING(obj) (dynamic_cast<const SPFeDiffuseLighting*>((SPObject*)obj) != NULL)
+
+struct SVGICCColor;
+
+namespace Inkscape {
+namespace Filters {
+class FilterDiffuseLighting;
+} }
+
+class SPFeDiffuseLighting : public SPFilterPrimitive {
+public:
+	SPFeDiffuseLighting();
+	~SPFeDiffuseLighting() override;
+
+    gfloat surfaceScale;
+    guint surfaceScale_set : 1;
+    gfloat diffuseConstant;
+    guint diffuseConstant_set : 1;
+    NumberOptNumber kernelUnitLength;
+    guint32 lighting_color;
+    guint lighting_color_set : 1;
+    Inkscape::Filters::FilterDiffuseLighting *renderer;
+    SVGICCColor *icc;
+
+protected:
+	void build(SPDocument* doc, Inkscape::XML::Node* repr) override;
+	void release() override;
+
+	void child_added(Inkscape::XML::Node* child, Inkscape::XML::Node* ref) override;
+	void remove_child(Inkscape::XML::Node* child) override;
+
+	void order_changed(Inkscape::XML::Node* child, Inkscape::XML::Node* old_repr, Inkscape::XML::Node* new_repr) override;
+
+	void set(SPAttr key, const gchar* value) override;
+
+	void update(SPCtx* ctx, unsigned int flags) override;
+
+	Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, guint flags) override;
+
+	void build_renderer(Inkscape::Filters::Filter* filter) override;
+};
+
+#endif /* !SP_FEDIFFUSELIGHTING_H_SEEN */
+
+/*
+  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 :