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#ifndef __SP_ITEM_GROUP_H__
#define __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, read the file 'COPYING' for more information

#include <map>
#include "sp-item.h"

#define SP_TYPE_GROUP            (sp_group_get_type ())
#define SP_GROUP(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), SP_TYPE_GROUP, SPGroup))
#define SP_GROUP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), SP_TYPE_GROUP, SPGroupClass))
#define SP_IS_GROUP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SP_TYPE_GROUP))

class CGroup;

namespace NR{ struct translate; }

struct SPGroup : public SPItem {
      enum LayerMode { GROUP, LAYER };

      LayerMode _layer_mode;
      std::map<unsigned int, LayerMode> _display_modes;

      LayerMode layerMode() const { return _layer_mode; }
      void setLayerMode(LayerMode mode);

      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(NR::translate const &tr);

    CGroup *group;

      void _updateLayerMode(unsigned int display_key=0);

struct SPGroupClass {
      SPItemClass parent_class;

 * Virtual methods of SPGroup
class CGroup {
    CGroup(SPGroup *group);
    virtual ~CGroup();
    virtual void onChildAdded(Inkscape::XML::Node *child);
    virtual void onChildRemoved(Inkscape::XML::Node *child);
    virtual void onUpdate(SPCtx *ctx, unsigned int flags);
    virtual void onModified(guint flags);
    virtual void calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
    virtual void onPrint(SPPrintContext *ctx);
    virtual void onOrderChanged(Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref);
    virtual gchar *getDescription();
    virtual NRArenaItem *show (NRArena *arena, unsigned int key, unsigned int flags);
    virtual void hide (unsigned int key);

    gint getItemCount();

    enum Action { ActionGeneral, ActionBBox, ActionUpdate, ActionShow };
    virtual GSList *_childList(bool add_ref, Action action = ActionGeneral);
    virtual void _showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags);

    SPGroup *_group;

GType sp_group_get_type (void);

void sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done = true);

GSList *sp_item_group_item_list (SPGroup *group);
SPObject *sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name);


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