text: // --------------------------------------------------------------------------
  //                   OpenMS -- Open-Source Mass Spectrometry
  // --------------------------------------------------------------------------
  // Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
  // ETH Zurich, and Freie Universitaet Berlin 2002-2016.
  //
  // This software is released under a three-clause BSD license:
  //  * Redistributions of source code must retain the above copyright
  //    notice, this list of conditions and the following disclaimer.
  //  * Redistributions in binary form must reproduce the above copyright
  //    notice, this list of conditions and the following disclaimer in the
  //    documentation and/or other materials provided with the distribution.
  //  * Neither the name of any author or any participating institution
  //    may be used to endorse or promote products derived from this software
  //    without specific prior written permission.
  // For a full list of authors, refer to the file AUTHORS.
  // --------------------------------------------------------------------------
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL ANY OF THE AUTHORS OR THE CONTRIBUTING
  // INSTITUTIONS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // --------------------------------------------------------------------------
  // $Maintainer: Timo Sachsenberg$
  // $Authors: Marc Sturm $
  // --------------------------------------------------------------------------
  
  #ifndef OPENMS_VISUAL_SPECTRUM2DWIDGET_H
  #define OPENMS_VISUAL_SPECTRUM2DWIDGET_H
  
  // OpenMS_GUI config
  #include <OpenMS/VISUAL/OpenMS_GUIConfig.h>
  
  // OpenMS
  #include <OpenMS/VISUAL/SpectrumWidget.h>
  #include <OpenMS/VISUAL/Spectrum2DCanvas.h>
  
  class QGroupBox;
  class QLabel;
  class QCheckBox;
  
  namespace OpenMS
  {
    class Spectrum1DWidget;
  
    /**
        @brief Widget for 2D-visualization of peak map and feature map data
  
        The widget is composed of two scroll bars, two AxisWidget and a Spectrum2DCanvas as central widget.
  
        @image html Spectrum2DWidget.png
  
        The example image shows %Spectrum2DWidget displaying a peak layer and a feature layer.
  
        @ingroup SpectrumWidgets
    */
    class OPENMS_GUI_DLLAPI Spectrum2DWidget :
      public SpectrumWidget
    {
      Q_OBJECT
  public:
      /// Main managed data type (experiment)
      typedef LayerData::ExperimentSharedPtrType ExperimentSharedPtrType;
  
      /// Default constructor
      Spectrum2DWidget(const Param & preferences, QWidget * parent = 0);
      /// Destructor
      virtual ~Spectrum2DWidget();
  
      /// This method is overwritten to make the class specific members accessible
      inline Spectrum2DCanvas * canvas()
      {
        return static_cast<Spectrum2DCanvas *>(canvas_);
      }
  
      /// const reference to the horizontal projection
      const Spectrum1DWidget * getHorizontalProjection() const;
      /// const reference to the vertical projection
      const Spectrum1DWidget * getVerticalProjection() const;
  
      /// Returns if one of the projections is visible (or both are visible)
      bool projectionsVisible() const;
  
  
  public slots:
      // Docu in base class
      virtual void recalculateAxes_();
      /// Shows/hides the projections
      void toggleProjections();
      /// Updates and shows the projections
      void updateProjections();
      // Docu in base class
      virtual void showGoToDialog();
  
  signals:
      /**
          @brief Signal emitted whenever the visible area changes.
  
          @param area The new visible area.
      */
      void visibleAreaChanged(DRange<2> area);
      /// Requests to display the spectrum with index @p index in 1D
      void showSpectrumAs1D(int index);
      void showSpectrumAs1D(std::vector<int, std::allocator<int> > indices);
      /// Requests to display all spectra as 1D
      void showCurrentPeaksAs3D();
  
  protected:
      // Docu in base class
      virtual Math::Histogram<> createIntensityDistribution_() const;
      // Docu in base class
      virtual Math::Histogram<> createMetaDistribution_(const String & name) const;
  
      /// Vertical projection widget
      Spectrum1DWidget * projection_vert_;
      /// Horizontal projection widget
      Spectrum1DWidget * projection_horz_;
      /// Group box that shows information about the projections
      QGroupBox * projection_box_;
      /// Number of peaks of the projection
      QLabel * projection_peaks_;
      /// Intensity sum of the projection
      QLabel * projection_sum_;
      /// Intensity maximum of the projection
      QLabel * projection_max_;
      /// Checkbox that indicates that projections should be automatically updated (with a slight delay)
      QCheckBox * projections_auto_;
      /// Timer that triggers auto-update of projections
      QTimer * projections_timer_;
  
  private slots:
      /// shows the horizontal projection with the given data and draw mode
      void horizontalProjection(ExperimentSharedPtrType exp);
      /// shows the vertical projection with the given data and draw mode
      void verticalProjection(ExperimentSharedPtrType exp);
      /// shows projections information
      void projectionInfo(int peaks, double intensity, double max);
      /// slot that monitors the visible area changes and triggers the update of projections
      void autoUpdateProjections();
    };
  }
  
  #endif
  