1 files changed, 105 insertions, 0 deletions
diff --git a/src/object/sp-mask.h b/src/object/sp-mask.h
new file mode 100644
index 0000000..96502f9
--- /dev/null
+++ b/src/object/sp-mask.h
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_MASK_H
+#define SEEN_SP_MASK_H
+
+/*
+ * SVG <mask> implementation
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2003 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <memory>
+#include <vector>
+#include <2geom/rect.h>
+#include "sp-object-group.h"
+#include "uri-references.h"
+#include "display/drawing-item-ptr.h"
+#include "xml/node.h"
+
+namespace Inkscape {
+class Drawing;
+class DrawingItem;
+class DrawingGroup;
+} // namespace Inkscape
+
+class SPMask final
+    : public SPObjectGroup
+{
+public:
+	SPMask();
+	~SPMask() override;
+    int tag() const override { return tag_of<decltype(*this)>; }
+
+    bool mask_content_units() const { return maskContentUnits; }
+
+    // Fixme: Hack used by cairo-renderer.
+    Geom::OptRect get_last_bbox() const { return views.back().bbox; }
+
+    static char const *create(std::vector<Inkscape::XML::Node*> &reprs, SPDocument *document);
+
+    Inkscape::DrawingItem *show(Inkscape::Drawing &drawing, unsigned key, Geom::OptRect const &bbox);
+    void hide(unsigned key);
+    void setBBox(unsigned key, Geom::OptRect const &bbox);
+
+    Geom::OptRect geometricBounds(Geom::Affine const &transform) const;
+    Geom::OptRect visualBounds(Geom::Affine const &transform) const;
+
+protected:
+    void build(SPDocument *doc, Inkscape::XML::Node *repr) override;
+	void release() override;
+    void set(SPAttr key, char const *value) override;
+    void update(SPCtx *ctx, unsigned flags) override;
+    void modified(unsigned flags) override;
+    Inkscape::XML::Node *write(Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, unsigned flags) override;
+
+    void child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref) override;
+
+private:
+    bool maskUnits_set : 1;
+    bool maskUnits : 1;
+
+    bool maskContentUnits_set : 1;
+    bool maskContentUnits : 1;
+
+    struct View
+    {
+        DrawingItemPtr<Inkscape::DrawingGroup> drawingitem;
+        Geom::OptRect bbox;
+        unsigned key;
+        View(DrawingItemPtr<Inkscape::DrawingGroup> drawingitem, Geom::OptRect const &bbox, unsigned key);
+    };
+    std::vector<View> views;
+    void update_view(View &v);
+};
+
+class SPMaskReference
+    : public Inkscape::URIReference
+{
+public:
+    SPMaskReference(SPObject *obj)
+        : URIReference(obj) {}
+
+    SPMask *getObject() const
+    {
+        return static_cast<SPMask*>(URIReference::getObject());
+	}
+
+    sigc::connection modified_connection;
+
+protected:
+    /**
+     * If the owner element of this reference (the element with <... mask="...">)
+     * is a child of the mask it refers to, return false.
+     * \return false if obj is not a mask or if obj is a parent of this
+     *         reference's owner element. True otherwise.
+     */
+    bool _acceptObject(SPObject *obj) const override;
+};
+
+#endif // SEEN_SP_MASK_H