DefineRectanglesMouseHandler.h

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/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLQt/src/ICLQt/DefineRectanglesMouseHandler.h         **
** Module : ICLQt                                                  **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#pragma once

#include <ICLUtils/CompatMacros.h>
#include <ICLUtils/Lockable.h>
#include <ICLUtils/Any.h>
#include <ICLUtils/Function.h>
#include <ICLCore/Color.h>
#include <ICLQt/MouseHandler.h>

namespace icl{
  namespace qt{

    class ICLDrawWidget;




    class ICLQt_API DefineRectanglesMouseHandler : public MouseHandler, protected utils::Lockable{
      public:
        class ICLQt_API Options{
        friend class DefineRectanglesMouseHandler;
        Options(const core::Color4D &edgeColor=core::Color4D(0,255,0,255),
                const core::Color4D &fillColor=core::Color4D(0,255,0,50),
                const core::Color4D &centerColor=core::Color4D(0,255,0,255),
                const core::Color4D &metaColor=core::Color4D(0,255,0,255),
                int handleWidth=3, bool visualizeCenter=false,
                bool visualizeHovering=true,
                bool showOffsetText=false,
                bool showSizeText=false,
                bool showCenterText=false,
                bool showMetaData=false,
                int lineWidth=1,
                float textSize=9);
        public:
        core::Color4D edgeColor;     
        core::Color4D fillColor;     
        core::Color4D centerColor;   
        core::Color4D metaColor;     
        int handleWidth;       
        bool visualizeCenter;  
        bool visualizeHovering;
        bool showOffsetText;   
        bool showSizeText;     
        bool showCenterText;   
        bool showMetaData;     
        int lineWidth;         
        float textSize;        
        int xStepping;         
        int yStepping;         
        bool canDeleteRects;   
      };

      protected:

      struct ICLQt_API DefinedRect : public utils::Rect{
        friend class DefineRectanglesMouseHandler;

        enum Edge{
          T, 
          R, 
          B, 
          L  
        };
        enum State{
          nothing, 
          hovered, 
          dragged  
        };

        State states[4];

        utils::Point allDragOffs;

        DefineRectanglesMouseHandler::Options *options;

        utils::Rect edge(Edge e) const;
        utils::Rect edgei(int i) const;
        utils::Rect inner() const;
        utils::Rect outer() const;
        bool allHovered() const;
        bool allDragged() const;
        bool anyDragged() const;

        DefinedRect(const utils::Rect &r=utils::Rect::null, DefineRectanglesMouseHandler::Options *options=0);

        State event(const MouseEvent &e);

        void visualize(ICLDrawWidget &w);

        utils::Any meta;
      };


      int maxRects; 
      int minDim;   
      std::vector<DefinedRect> rects; 
      utils::Point currBegin; 
      utils::Point currCurr;  
      DefinedRect *draggedRect; 
      Options options;  

      private:
      typedef utils::Function<void,const std::vector<utils::Rect> &>  Callback;
      std::map<std::string,Callback> callbacks;
      void callCallbacks();

      public:


      void registerCallback(const std::string &id, Callback cb);
      void unregisterCallback(const std::string &id);


      DefineRectanglesMouseHandler(int maxRects=10, int minDim=4);

      void process(const MouseEvent &e);


      void visualize(ICLDrawWidget &w);

      Options &getOptions();

      const Options &getOptions() const;

      void clearAllRects();


      void clearRectAt(int x, int y, bool all=false);


      void addRect(const utils::Rect &rect);


      void setMaxRects(int maxRects);

      void setMinDim(int minDim);

      int getNumRects() const;


      utils::Rect getRectAtIndex(int index) const;

      std::vector<utils::Rect> getRects() const;


      utils::Rect getRectAt(int x, int y) const;

      std::vector<utils::Rect> getAllRectsAt(int x, int y) const;

      int getMinDim() const;

      int getMaxRects() const;

      const utils::Any &getMetaData(int index) const;

      const utils::Any &getMetaDataAt(int x, int y) const;

      void setMetaData(int index, const utils::Any &data);

      void setMetaDataAt(int x, int y, const utils::Any &data);

      void bringToFront(int idx);

      void bringToBack(int idx);
    };
  } // namespace qt
}