1 files changed, 149 insertions, 0 deletions
diff --git a/src/object/sp-pattern.h b/src/object/sp-pattern.h
new file mode 100644
index 0000000..5c5eb36
--- /dev/null
+++ b/src/object/sp-pattern.h
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * SVG <pattern> implementation
+ *//*
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_SP_PATTERN_H
+#define SEEN_SP_PATTERN_H
+
+#include <list>
+#include <cstddef>
+#include <glibmm/ustring.h>
+#include <sigc++/connection.h>
+
+#include "svg/svg-length.h"
+#include "sp-paint-server.h"
+#include "uri-references.h"
+#include "viewbox.h"
+
+class SPPatternReference;
+class SPItem;
+
+namespace Inkscape {
+namespace XML {
+
+class Node;
+}
+}
+
+#define SP_PATTERN(obj) (dynamic_cast<SPPattern *>((SPObject *)obj))
+#define SP_IS_PATTERN(obj) (dynamic_cast<const SPPattern *>((SPObject *)obj) != NULL)
+
+class SPPattern : public SPPaintServer, public SPViewBox {
+public:
+    enum PatternUnits { UNITS_USERSPACEONUSE, UNITS_OBJECTBOUNDINGBOX };
+
+    SPPattern();
+    ~SPPattern() override;
+
+    /* Reference (href) */
+    Glib::ustring href;
+    SPPatternReference *ref;
+
+    gdouble x() const;
+    gdouble y() const;
+    gdouble width() const;
+    gdouble height() const;
+    Geom::OptRect viewbox() const;
+    SPPattern::PatternUnits patternUnits() const;
+    SPPattern::PatternUnits patternContentUnits() const;
+    Geom::Affine const &getTransform() const;
+    SPPattern *rootPattern(); // TODO: const
+
+    SPPattern *clone_if_necessary(SPItem *item, const gchar *property);
+    void transform_multiply(Geom::Affine postmul, bool set);
+
+    /**
+     * @brief create a new pattern in XML tree
+     * @return created pattern id
+     */
+    static const gchar *produce(const std::vector<Inkscape::XML::Node *> &reprs, Geom::Rect bounds,
+                                SPDocument *document, Geom::Affine transform, Geom::Affine move);
+
+    bool isValid() const override;
+
+    cairo_pattern_t *pattern_new(cairo_t *ct, Geom::OptRect const &bbox, double opacity) override;
+
+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;
+    void modified(unsigned int flags) override;
+
+private:
+    bool _hasItemChildren() const;
+    void _getChildren(std::list<SPObject *> &l);
+    SPPattern *_chain() const;
+
+    /**
+    Count how many times pattern is used by the styles of o and its descendants
+    */
+    guint _countHrefs(SPObject *o) const;
+
+    /**
+    Gets called when the pattern is reattached to another <pattern>
+    */
+    void _onRefChanged(SPObject *old_ref, SPObject *ref);
+
+    /**
+    Gets called when the referenced <pattern> is changed
+    */
+    void _onRefModified(SPObject *ref, guint flags);
+
+    /* patternUnits and patternContentUnits attribute */
+    PatternUnits _pattern_units : 1;
+    bool _pattern_units_set : 1;
+    PatternUnits _pattern_content_units : 1;
+    bool _pattern_content_units_set : 1;
+    /* patternTransform attribute */
+    Geom::Affine _pattern_transform;
+    bool _pattern_transform_set : 1;
+    /* Tile rectangle */
+    SVGLength _x;
+    SVGLength _y;
+    SVGLength _width;
+    SVGLength _height;
+
+    sigc::connection _modified_connection;
+};
+
+
+class SPPatternReference : public Inkscape::URIReference {
+public:
+    SPPatternReference(SPObject *obj)
+        : URIReference(obj)
+    {
+    }
+
+    SPPattern *getObject() const
+    {
+        return reinterpret_cast<SPPattern *>(URIReference::getObject());
+    }
+
+protected:
+    bool _acceptObject(SPObject *obj) const override {
+        return SP_IS_PATTERN (obj)&& URIReference::_acceptObject(obj);
+    }
+};
+
+#endif // SEEN_SP_PATTERN_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 :