1 files changed, 67 insertions, 0 deletions
diff --git a/src/object/filters/composite.h b/src/object/filters/composite.h
new file mode 100644
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+++ b/src/object/filters/composite.h
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief SVG composite filter effect
+ *//*
+ * Authors:
+ *   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_FECOMPOSITE_H_SEEN
+#define SP_FECOMPOSITE_H_SEEN
+
+#include "sp-filter-primitive.h"
+
+#define SP_FECOMPOSITE(obj) (dynamic_cast<SPFeComposite*>((SPObject*)obj))
+#define SP_IS_FECOMPOSITE(obj) (dynamic_cast<const SPFeComposite*>((SPObject*)obj) != NULL)
+
+enum FeCompositeOperator {
+    // Default value is 'over', but let's distinguish specifying the
+    // default and implicitly using the default
+    COMPOSITE_DEFAULT,
+    COMPOSITE_OVER,              /* Source Over */
+    COMPOSITE_IN,                /* Source In   */
+    COMPOSITE_OUT,               /* Source Out  */
+    COMPOSITE_ATOP,              /* Source Atop */
+    COMPOSITE_XOR,
+    COMPOSITE_ARITHMETIC,        /* Not a fundamental PorterDuff operator, nor Cairo */
+    COMPOSITE_LIGHTER,           /* Plus, Add (Not a fundamental PorterDuff operator  */
+    COMPOSITE_ENDOPERATOR        /* Cairo Saturate is not included in CSS */
+};
+
+class SPFeComposite : public SPFilterPrimitive {
+public:
+	SPFeComposite();
+	~SPFeComposite() override;
+
+    FeCompositeOperator composite_operator;
+    double k1, k2, k3, k4;
+    int in2;
+
+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_FECOMPOSITE_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 :