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Diffstat (limited to 'include/view/view_group.h')
-rw-r--r-- | include/view/view_group.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/include/view/view_group.h b/include/view/view_group.h new file mode 100644 index 0000000..2a1ad62 --- /dev/null +++ b/include/view/view_group.h @@ -0,0 +1,205 @@ +/* + * This program source code file is part of KiCad, a free EDA CAD application. + * + * Copyright (C) 2013 CERN + * @author Maciej Suminski <maciej.suminski@cern.ch> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, you may find one here: + * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html + * or you may search the http://www.gnu.org website for the version 2 license, + * or you may write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + * + */ + +/** + * @file view_group.h + * @brief VIEW_GROUP extends VIEW_ITEM by possibility of grouping items into a single object. + * VIEW_GROUP does not take over ownership of the held items. The main purpose of this class is + * to group items and draw them on a single layer (in particular the overlay). + */ + +#ifndef VIEW_GROUP_H_ +#define VIEW_GROUP_H_ + +#include <view/view_item.h> +#include <deque> + +namespace KIGFX +{ +class VIEW_GROUP : public VIEW_ITEM +{ +public: + VIEW_GROUP( VIEW* aView = NULL ); + virtual ~VIEW_GROUP(); + + /// Helper typedefs + typedef std::set<VIEW_ITEM*>::const_iterator const_iter; + typedef std::set<VIEW_ITEM*>::iterator iter; + + /** + * Function Add() + * Adds an item to the group. + * + * @param aItem is the item to be added. + */ + virtual void Add( VIEW_ITEM* aItem ); + + /** + * Function Remove() + * Removes an item from the group. + * + * @param aItem is the item to be removed. + */ + virtual void Remove( VIEW_ITEM* aItem ); + + /** + * Function Clear() + * Removes all the stored items from the group. + */ + virtual void Clear(); + + /** + * Function Begin() + * Returns iterator to beginning. + */ + inline const_iter Begin() const + { + return m_items.begin(); + } + + /** + * Function End() + * Returns iterator to end. + */ + inline const_iter End() const + { + return m_items.end(); + } + + /** + * Function GetSize() + * Returns the number of stored items. + * + * @return Number of stored items. + */ + virtual unsigned int GetSize() const; + + /** + * Function ViewBBox() + * Returns the bounding box for all stored items covering all its layers. + * + * @return The current bounding box + */ + virtual const BOX2I ViewBBox() const; + + /** + * Function ViewDraw() + * Draws all the stored items in the group on the given layer. + * + * @param aLayer is the layer which should be drawn. + * @param aGal is the GAL that should be used for drawing. + */ + virtual void ViewDraw( int aLayer, GAL* aGal ) const; + + /** + * Function ViewGetLayers() + * Returns all the layers used by the stored items. + * + * @param aLayers[] is the output layer index array. + * @param aCount is the number of layer indices in aLayers[]. + */ + virtual void ViewGetLayers( int aLayers[], int& aCount ) const; + + /** + * Function SetLayer() + * Sets layer used to draw the group. + * + * @param aLayer is the layer used for drawing. + */ + inline virtual void SetLayer( int aLayer ) + { + m_layer = aLayer; + } + + /** + * Function FreeItems() + * Frees all the items that were added to the group. + */ + void FreeItems(); + + /** + * Function GetView() + * Returns pointer to the VIEW instance used by items. + * + * @return Pointer to the VIEW instance. + */ + KIGFX::VIEW* GetView() const + { + return m_view; + } + + /** + * Function ItemsSetVisibility() + * Sets visibility of items stored in the VIEW_GROUP. + * + * @param aVisible decides if items should be visible or not. + */ + virtual void ItemsSetVisibility( bool aVisible ); + + /** + * Function ItemsViewUpdate() + * Updates items stored in the VIEW_GROUP. + * + * @param aFlags determines the way in which items will be updated. + */ + virtual void ItemsViewUpdate( VIEW_ITEM::VIEW_UPDATE_FLAGS aFlags ); + +protected: + /// These functions cannot be used with VIEW_GROUP as they are intended only to work with + /// singular VIEW_ITEMs (there is only one-to-one relation between item/layer combination and + /// its group). + int getGroup( int aLayer ) const + { + return -1; + } + + std::vector<int> getAllGroups() const + { + return std::vector<int>(); + } + + void setGroup( int aLayer, int aGroup ) + {} + + void deleteGroups() + {} + + bool storesGroups() const + { + return false; + } + + /// Layer on which the group is drawn + int m_layer; + +private: + void updateBbox(); + + /// Container for storing VIEW_ITEMs + std::set<VIEW_ITEM*> m_items; +}; +} // namespace KIGFX + +#endif // VIEW_GROUP_H_ |