1 files changed, 133 insertions, 0 deletions
diff --git a/src/object/sp-item-group.h b/src/object/sp-item-group.h
new file mode 100644
index 0000000..7aaf29c
--- /dev/null
+++ b/src/object/sp-item-group.h
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_ITEM_GROUP_H
+#define SEEN_SP_ITEM_GROUP_H
+
+/*
+ * SVG <g> implementation
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <map>
+#include "sp-lpe-item.h"
+
+namespace Inkscape {
+
+class Drawing;
+class DrawingItem;
+
+} // namespace Inkscape
+
+class SPGroup : public SPLPEItem {
+public:
+	SPGroup();
+	~SPGroup() override;
+
+    enum LayerMode { GROUP, LAYER, MASK_HELPER };
+
+    bool isLayer() const { return _layer_mode == LAYER; }
+
+    bool _insert_bottom;
+    LayerMode _layer_mode;
+    std::map<unsigned int, LayerMode> _display_modes;
+
+    LayerMode layerMode() const { return _layer_mode; }
+    void setLayerMode(LayerMode mode);
+
+    bool insertBottom() const { return _insert_bottom; }
+    void setInsertBottom(bool insertbottom);
+
+    LayerMode effectiveLayerMode(unsigned int display_key) const {
+        if ( _layer_mode == LAYER ) {
+            return LAYER;
+        } else {
+            return layerDisplayMode(display_key);
+        }
+    }
+
+    LayerMode layerDisplayMode(unsigned int display_key) const;
+    void setLayerDisplayMode(unsigned int display_key, LayerMode mode);
+    void translateChildItems(Geom::Translate const &tr);
+    void scaleChildItemsRec(Geom::Scale const &sc, Geom::Point const &p, bool noRecurse);
+
+    int getItemCount() const;
+    virtual void _showChildren (Inkscape::Drawing &drawing, Inkscape::DrawingItem *ai, unsigned int key, unsigned int flags);
+
+private:
+    void _updateLayerMode(unsigned int display_key=0);
+
+public:
+    void build(SPDocument *document, Inkscape::XML::Node *repr) override;
+   	void release() override;
+
+    void child_added(Inkscape::XML::Node* child, Inkscape::XML::Node* ref) override;
+    void remove_child(Inkscape::XML::Node *child) override;
+    void order_changed(Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref) override;
+
+    void update(SPCtx *ctx, unsigned int flags) override;
+    void modified(unsigned int flags) override;
+    void set(SPAttr key, char const* value) override;
+
+    Inkscape::XML::Node* write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, unsigned int flags) override;
+
+    Geom::OptRect bbox(Geom::Affine const &transform, SPItem::BBoxType bboxtype) const override;
+    void print(SPPrintContext *ctx) override;
+    const char* typeName() const override;
+    const char* displayName() const override;
+    char *description() const override;
+    Inkscape::DrawingItem *show (Inkscape::Drawing &drawing, unsigned int key, unsigned int flags) override;
+    void hide (unsigned int key) override;
+
+    void snappoints(std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs) const override;
+
+    void update_patheffect(bool write) override;
+
+    guint32 highlight_color() const override;
+};
+
+/**
+ * finds clones of a child of the group going out of the group; and inverse the group transform on its clones
+ * Also called when moving objects between different layers
+ * @param group current group
+ * @param parent original parent
+ * @param clone_original lpe clone handle ungroup
+ * @param g transform
+ */
+void sp_item_group_ungroup_handle_clones(SPItem *parent, Geom::Affine const g);
+
+void sp_item_group_ungroup (SPGroup *group, std::vector<SPItem*> &children, bool do_done = true);
+
+
+std::vector<SPItem*> sp_item_group_item_list (SPGroup *group);
+
+SPObject *sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const char *name);
+
+MAKE_SP_OBJECT_DOWNCAST_FUNCTIONS(SP_GROUP, SPGroup)
+MAKE_SP_OBJECT_TYPECHECK_FUNCTIONS(SP_IS_GROUP, SPGroup)
+
+inline bool SP_IS_LAYER(SPObject const *obj)
+{
+    auto group = dynamic_cast<SPGroup const *>(obj);
+    return group && group->layerMode() == SPGroup::LAYER;
+}
+
+void set_default_highlight_colors(std::vector<guint32> colors);
+
+#endif
+
+/*
+  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 :