1 files changed, 79 insertions, 0 deletions
diff --git a/src/display/nr-filter-colormatrix.h b/src/display/nr-filter-colormatrix.h
new file mode 100644
index 0000000..8e35a35
--- /dev/null
+++ b/src/display/nr-filter-colormatrix.h
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_NR_FILTER_COLOR_MATRIX_H
+#define SEEN_NR_FILTER_COLOR_MATRIX_H
+
+/*
+ * feColorMatrix filter primitive renderer
+ *
+ * Authors:
+ *   Felipe Corrêa da Silva Sanches <juca@members.fsf.org>
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <vector>
+#include <2geom/forward.h>
+#include "display/nr-filter-primitive.h"
+
+typedef unsigned int guint32;
+typedef signed int gint32;
+
+namespace Inkscape {
+namespace Filters {
+
+class FilterSlot;
+
+enum FilterColorMatrixType {
+    COLORMATRIX_MATRIX,
+    COLORMATRIX_SATURATE,
+    COLORMATRIX_HUEROTATE,
+    COLORMATRIX_LUMINANCETOALPHA,
+    COLORMATRIX_ENDTYPE
+};
+
+class FilterColorMatrix : public FilterPrimitive {
+public:
+    FilterColorMatrix();
+    static FilterPrimitive *create();
+    ~FilterColorMatrix() override;
+
+    void render_cairo(FilterSlot &slot) override;
+    bool can_handle_affine(Geom::Affine const &) override;
+    double complexity(Geom::Affine const &ctm) override;
+
+    virtual void set_type(FilterColorMatrixType type);
+    virtual void set_value(double value);
+    virtual void set_values(std::vector<double> const &values);
+
+    Glib::ustring name() override { return Glib::ustring("Color Matrix"); }
+
+public:
+    struct ColorMatrixMatrix {
+        ColorMatrixMatrix(std::vector<double> const &values);
+        guint32 operator()(guint32 in);
+    private:
+        gint32 _v[20];
+    };
+
+private:
+    std::vector<double> values;
+    double value;
+    FilterColorMatrixType type;
+};
+
+} /* namespace Filters */
+} /* namespace Inkscape */
+
+#endif /* __NR_FILTER_COLOR_MATRIX_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 :