1 files changed, 67 insertions, 0 deletions
diff --git a/src/object/filters/convolvematrix.h b/src/object/filters/convolvematrix.h
new file mode 100644
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+++ b/src/object/filters/convolvematrix.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief SVG matrix convolution filter effect
+ */
+/*
+ * Authors:
+ *   Felipe Corrêa da Silva Sanches <juca@members.fsf.org>
+ *   Hugo Rodrigues <haa.rodrigues@gmail.com>
+ *
+ * Copyright (C) 2006 Hugo Rodrigues
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef SP_FECONVOLVEMATRIX_H_SEEN
+#define SP_FECONVOLVEMATRIX_H_SEEN
+
+#include <vector>
+#include "sp-filter-primitive.h"
+#include "number-opt-number.h"
+#include "display/nr-filter-convolve-matrix.h"
+
+#define SP_FECONVOLVEMATRIX(obj) (dynamic_cast<SPFeConvolveMatrix*>((SPObject*)obj))
+#define SP_IS_FECONVOLVEMATRIX(obj) (dynamic_cast<const SPFeConvolveMatrix*>((SPObject*)obj) != NULL)
+
+class SPFeConvolveMatrix : public SPFilterPrimitive {
+public:
+	SPFeConvolveMatrix();
+	~SPFeConvolveMatrix() override;
+
+    NumberOptNumber order;
+    std::vector<gdouble> kernelMatrix;
+    double divisor, bias;
+    int targetX, targetY;
+    Inkscape::Filters::FilterConvolveMatrixEdgeMode edgeMode;
+    NumberOptNumber kernelUnitLength;
+    bool preserveAlpha;
+
+    bool targetXIsSet;
+    bool targetYIsSet;
+    bool divisorIsSet;
+    bool kernelMatrixIsSet;
+
+protected:
+	void build(SPDocument* doc, Inkscape::XML::Node* repr) override;
+	void release() 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_FECONVOLVEMATRIX_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 :