SubtractAreaTool.h

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/*  Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.
 
  This file is part of the TerraLib - a Framework for building GIS enabled applications.
 
  TerraLib is free software: you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation, either version 3 of the License,
  or (at your option) any later version.
 
  TerraLib 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 Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public License
  along with TerraLib. See COPYING. If not, write to
  TerraLib Team at <terralib-team@terralib.org>.
*/
 
/*!
  \file terralib/edit/qt/tools/SubtratAreaTool.cpp
 
  \brief This class implements a concrete tool to subtract geometries.
*/
 
#ifndef __TERRALIB_EDIT_QT_INTERNAL_SUBTRACTAREATOOL_H
#define __TERRALIB_EDIT_QT_INTERNAL_SUBTRACTAREATOOL_H
 
// TerraLib
#include "../../../geometry/Envelope.h"
#ifndef Q_MOC_RUN
#include "../../../maptools/AbstractLayer.h"
#include "../core/command/AddCommand.h"
#include "../core/UndoStackManager.h"
#include "CreateLineTool.h"
#endif
#include "../Config.h"
 
// Qt
#include <QPointF>
 
namespace te
{
  namespace qt
  {
    namespace widgets
    {
      class Canvas;
      class MapDisplay;
    }
  }
 
  namespace edit
  {
 
    class TEEDITQTEXPORT SubtractAreaTool : public CreateLineTool
    {
      Q_OBJECT
 
    public:
      SubtractAreaTool(te::qt::widgets::MapDisplay* display, const te::map::AbstractLayerPtr& layer, QObject* parent = 0);
 
      ~SubtractAreaTool();
 
      //@}
 
      /** @name AbstractTool Methods
      *  Methods related with tool behavior.
      */
      //@{
 
      bool mousePressEvent(QMouseEvent* e);
 
      bool mouseMoveEvent(QMouseEvent* e);
 
      bool mouseDoubleClickEvent(QMouseEvent* e);
 
      bool mouseReleaseEvent(QMouseEvent* e);
 
      //@}
 
    private:
 
      bool editingFinished();
 
      void drawPolygon();
 
      void draw();
 
      void storeFeature();
 
      void storeUndoCommand();
 
      void pickFeature(const QPointF& pos);
 
      te::gm::Envelope buildEnvelope(const QPointF& pos);
 
      te::gm::Geometry* buildPolygon();
 
      void clear();
 
    protected:
 
      UndoStackManager& m_stack;
 
    };
 
  }   // end namespace edit
}     // end namespace te
 
#endif  // __TERRALIB_EDIT_QT_INTERNAL_AGGREGATEAREATOOL_H