RasterHistogramWidget.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/qt/widgets/rp/RasterHistogramWidget.h
 
  \brief This file has the RasterHistogramWidget class.
*/
 
#ifndef __TERRALIB_QT_WIDGETS_CANVAS_INTERNAL_RASTERHISTOGRAMWIDGET_H
#define __TERRALIB_QT_WIDGETS_CANVAS_INTERNAL_RASTERHISTOGRAMWIDGET_H
 
// TerraLib
#ifndef Q_MOC_RUN
#include "../../../maptools/AbstractLayer.h"
#endif
#include "../Config.h"
 
// STL
#include <memory>
 
// Qt
#include <QWidget>
 
//QWT
#include <qwt_plot_marker.h>
 
namespace Ui { class RasterHistogramWidgetForm; }
 
namespace te
{
  namespace rst { class Raster; }
 
  namespace qt
  {
    namespace widgets
    {
      class ChartStyle;
      class ChartDisplay;
      class Histogram;
      class HistogramChart;
      /*!
        \class RasterHistogramWidget
 
        \brief This class is used to define a component for viewing overlaid layers.
      */
      class TEQTWIDGETSEXPORT RasterHistogramWidget : public QWidget
      {
        Q_OBJECT
 
        public:
 
          RasterHistogramWidget(QWidget* parent = 0, Qt::WindowFlags f = 0);
 
          ~RasterHistogramWidget();
 
          Ui::RasterHistogramWidgetForm* getForm() const;
 
          void setChartInputColor(int red, int green, int blue);
          
          void setChartOutputColor(int red, int green, int blue);
 
          void setEnableTools(bool enable);
 
          void setEnableNavigationTools(bool enable);
 
          void setInputRaster(te::rst::Raster* raster, te::gm::Envelope env = te::gm::Envelope());
 
          /*!
            \brief Set the output raster.
            \param raster Raster pointer 
            \note This instance will acquire the raster ownership.
          */
          void setOutputRaster(te::rst::Raster* raster);
 
          void drawHistogram(int band);
 
          void setMinimumValueEnabled(bool enable);
 
          void updateMinimumValueLine(int value, bool replot = false);
 
          void updateMinimumValueLine(double value, bool replot = false);
 
          void updateMinimumValueLabel(QString value);
 
          void setMaximumValueEnabled(bool enable);
 
          void updateMaximumValueLine(int value, bool replot = false);
 
          void updateMaximumValueLine(double value, bool replot = false);
 
          void updateMaximumValueLabel(QString value);
          
          void clearMinMaxLines();
 
          void clear();
          
          void setHistogramInputTitle( const std::string& newTitle );
          
          void setHistogramOutputTitle( const std::string& newTitle );
 
          void setHistogramSampleStep( unsigned int newHistogramSampleStep );
 
        protected:
 
          void createHistogram(te::qt::widgets::Histogram* histogram, te::rst::Raster* raster, int bandId, int slices);
 
        protected slots:
 
          void onApplyToolButtonClicked();
 
          void onLeftPointSelected(const QPointF& point);
 
          void onRigthPointSelected(const QPointF& point);
 
        signals:
 
          void minValueSelected(int value, int band);
 
          void maxValueSelected(int value, int band);
 
          void minValueSelected(double value, int band);
 
          void maxValueSelected(double value, int band);
 
        private:
 
         unsigned int m_histogramSampleStep; //!< The row/column step used when reading pixels (to read all pixels sampleStep=1, to read half of pixels use sampleStep=2 ).
         std::unique_ptr<Ui::RasterHistogramWidgetForm> m_ui;
 
         te::rst::Raster* m_inputRaster;
         std::unique_ptr<te::rst::Raster> m_outputRaster;
 
         te::gm::Envelope m_inputEnv;
 
        public:
 
         te::qt::widgets::ChartStyle* m_chartStyle;
         te::qt::widgets::ChartDisplay* m_chartDisplay;
 
         te::qt::widgets::Histogram* m_histogramInput;
         te::qt::widgets::HistogramChart* m_histogramChartInput;
 
         te::qt::widgets::Histogram* m_histogramOutput;
         te::qt::widgets::HistogramChart* m_histogramChartOutput;
 
         QwtPlotMarker* m_minValueLine;
         QwtPlotMarker* m_maxValueLine;
      }; 
 
    } // end namespace widgets
  }   // end namespace qt
}     // end namespace te
 
#endif  // __TERRALIB_QT_WIDGETS_CANVAS_INTERNAL_RASTERHISTOGRAMWIDGET_H