ImageView.qo.h

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//# Copyright (C) 2005
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA
//#

#ifndef IMAGEVIEW_QO_H
#define IMAGEVIEW_QO_H

#include <QtGui/QFrame>
#include <QMenu>
#include <casa/BasicSL/String.h>
#include <casa/Containers/Record.h>
#include <measures/Measures/MDoppler.h>
#include <display/QtViewer/ImageManager/ImageView.ui.h>

class QSpacerItem;

namespace casa {

        class QtDisplayData;
        class DisplayLabel;

        class ImageView : public QFrame {
                Q_OBJECT

        public:
                ImageView(QtDisplayData* data, QWidget *parent = 0);
                enum ColorCombinationMode {NO_COMBINATION, RGB, HUE_SATURATION };

                //Accessors
                QString getName() const;
                QtDisplayData* getData() const;
                QString getDataDisplayTypeName() const;
                bool isRegistered() const;
                bool isMasterHue() const;
                bool isMasterSaturation() const;
                bool isMasterCoordinate() const;
                bool isEmpty() const;
                bool isRaster() const;
                QColor getDisplayedColor() const;

                //Setters
                void setRegistered( bool selected );
                void setColorCombinationMode( ColorCombinationMode mode );
                void setMasterCoordinateImage( bool masterImage );
                void setMasterHueImage( bool masterImage );
                void setMasterSaturationImage( bool masterImage );
                //Sets whether or not this is the image currently being viewed
                //on the animator.
                void setViewedImage( bool viewed );
                void setDisplayedColor( QColor color );
                void setData( QtDisplayData* other );

                //Returns whether or not the data is eligible to set the
                //coordinate system for the display.
                bool isControlEligible() const;

                virtual QSize minimumSizeHint() const;

                static const QString DROP_ID;
                virtual ~ImageView();

        signals:
                //Register/unregister has changed.
                void imageSelected(ImageView*);
                //Raster/Contour/Vector has changed.
                void displayTypeChanged( ImageView* dd );
                //User has requested to view the display properties of this data.
                void showDataDisplayOptions( QtDisplayData* imageData );
                //Close the image.
                void close( ImageView* imageToClose );
                //This imageView has become the master coordinate image.
                void masterCoordinateImageSelected( ImageView* imageView );
                //This ImageView has become the master hue image.
                void masterHueImageSelected( ImageView* imageView );
                //This ImageView has become the master saturation image.
                void masterSaturationImageSelected( ImageView* imageView );
                //There will be no master coordinate image.
                void masterCoordinateImageClear();
                //An image has been selected to view on the image animator.
                void viewImage( ImageView* imageToView );

        protected:
                //Implemented to support drag and drop.
                virtual void mouseMoveEvent( QMouseEvent* event );


        private slots:
                //Method of specifying "rest" has changed.
                void restChanged();
                void restUnitsChanged();
                //Minimize/maximize the display
                void openCloseDisplay();
                //Display data has changed register/unregister status.
                void imageRegistrationChanged( bool selected );
                //User has changed the rest frequency
                void restFrequencyChanged();
                //Change to raster/contour/vector/marker
                void displayTypeChanged();
                //Color this image will use in RGB mode has changed.
                void rgbChanged();
                //User selected color for RGB mode has changed.
                //void otherColorChanged();
                //Display the context menu.
                void showContextMenu( const QPoint& location );
                //Show a color dialog where the user can choose a custom color.
                //void showColorDialog();
                //Show the display options for this image view.
                void showDataOptions();

                //Reset the rest frequency back to its original value.
                void resetRestFrequency();

                //void _resetSpectralUnit();

        private:
                ImageView( const ImageView& other );
                ImageView operator=( const ImageView& other );

                //Initialization
                void initDisplayLabels();
                void initDisplayLabel( QWidget* holder, DisplayLabel* label );
                void initColorModeSettings();
                void initRestSettings();
                void initDisplayType();
                void setTitle();

                //Conversion
                double wavelengthFrequencyConversion( double value,
                        QString oldUnits, QString newUnits ) const;
                bool isCategoryMatch( const QString& newUnits, const QString& oldUnits ) const;


                //Background color.  Master image used to set the
                //coordinate system is a slightly different color
                void setBackgroundColor( QColor color );
                QColor getBackgroundColor() const;

                //Opening/closing
                void minimizeDisplay();
                void maximizeDisplay();

                //Snapshots
                void saveSnapshot();
                void restoreSnapshot();

                //Drag and drop
                QImage* makeDragImage();
                void makeDrag( QMouseEvent* event );

                //Resetting the original rest frequency
                void _sendRestFrequencyChange( String comboStr );
                QString updateRestUI( String& restStr );
                void updateFreqUnitCombo();
                void selectRestUnits( const QString& restUnits );

                //Custom color for RGB image combination
                //void setButtonColor( QColor color );
                //QColor getButtonColor() const;
                void rgbModeChanged();

                enum DisplayType { DISPLAY_RASTER, DISPLAY_CONTOUR, DISPLAY_VECTOR, DISPLAY_MARKER, DISPLAY_NONE };
                QMap<DisplayType,QString> displayTypeMap;
                DisplayType storedDisplay;

                enum RestTypes { REST_FREQUENCY, REST_WAVELENGTH, REST_REDSHIFT };
                RestTypes restType;
                QString restUnits;

                //Available context menu choices
                QAction viewAction;
                QAction closeAction;
                QAction masterCoordinateSystemAction;
                QAction masterCoordinateSystemUndoAction;
                QAction masterHueAction;
                QAction masterSaturationAction;
                QAction rasterAction;
                QAction contourAction;
                QMenu contextMenu;

                //Regular background or master coordinate image background
                QColor normalColor;
                QColor masterCoordinateColor;

                QtDisplayData* imageData;
                QButtonGroup* displayGroup;

                //Indicators of which display properties apply to this image view.
                DisplayLabel* displayTypeLabel;
                DisplayLabel* coordinateMasterLabel;
                DisplayLabel* hueMasterLabel;
                DisplayLabel* saturationMasterLabel;
                QSpacerItem* spacerFirst;
                QSpacerItem* spacerLast;

                //Method used to combine images using colors.
                ColorCombinationMode colorMode;
                Record displayOptionsSnapshot;
                bool empty;

                //Rest frequency
                QStringList frequencyUnits;
                QStringList wavelengthUnits;
                const String REST_FREQUENCY_KEY;
                //const String SPECTRAL_UNIT_KEY;
                const String VALUE_KEY;

                //Opening/closing
                int minimumSize;
                const int SIZE_COLLAPSED;
                const int SIZE_EXPANDED;

                //Store original rest frequney value & units.
                String originalFreq;
                //String spectralUnit;

                const int VIEWED_BORDER_SIZE;
                const int NOT_VIEWED_BORDER_SIZE;
                bool isViewed() const;
                bool isRGBImage() const;
                Ui::ImageViewClass ui;
        };

}

#endif // IMAGEVIEW_QO_H