QtNewRegionShape.qo.h

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//# QtNewRegionShape.qo.h: Widgets for creating a new region shape(s).
//# Copyright (C) 2008
//# 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
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//#
//# $Id$
#ifndef QTNEWREGIONSHAPE_QO_H
#define QTNEWREGIONSHAPE_QO_H

#include <QDialog>
#include <QStackedLayout>
#include <QListWidget>
#include <QRadioButton>
#include <QLabel>

#include <display/RegionShapes/QtNewRegionShape.ui.h>
#include <display/RegionShapes/RegionShapes.h>

#include <casa/namespace.h>

namespace casa {

        class QtRegionShapeManager;
        class QtEditRegionShape;

// Dialog for creating a new region shape.  For now basically a wrapper with
// a shape chooser around a QtEditRegionShape widget.  For more complex shapes
// (polygon, composite) this will have to be changed.
        class QtNewRegionShape : public QWidget, Ui::NewRegionShape {
                Q_OBJECT

        public:
                // Static Members //

                // Returns creation widgets.
                static std::vector<std::pair<casacore::String, RegionShape*> >
                creationShapes(bool includeComposite = true) {
                        std::vector<std::pair<casacore::String, RegionShape*> > v(includeComposite ? 9 : 8);
                        for(unsigned int i = 0; i < v.size(); i++)
                                v[i] = std::pair<casacore::String,RegionShape*>(creationName(i),creationShape(i));
                        return v;
                }


                // Non-Static Members //

                std::string errorMessage( ) const { return ""; }
                // Constructor that takes parent.
                QtNewRegionShape(QtRegionShapeManager* manager,
                                 bool includeComposite = true, bool deleteOnClose = true);

                // Destructor.
                ~QtNewRegionShape();

                // Shows/hides the close button.
                void showCloseButton(bool show = true);

        signals:
                // Emitted whenever the user creates a shape.  After this signal is
                // emitted the newly created shape is replaced in the widget with a
                // blank one.
                void shapeCreated(RegionShape* createdShape);

        private:
                QtRegionShapeManager* m_manager; // Parent
                vector<RegionShape*> m_shapes;   // Shapes
                QStackedLayout* m_widgets;       // Edit widgets

                static RegionShape* creationShape(int i) {
                        if(i < 0)       return NULL;
                        else if(i == 0) return new RSEllipse(0,0,0,0);
                        else if(i == 1) return new RSCircle(0,0,0);
                        else if(i == 2) return new RSRectangle(0,0,0,0);
                        else if(i == 3)return new RSPolygon(casacore::Vector<double>(),casacore::Vector<double>());
                        else if(i == 4) return new RSLine(0,0,0,0,7);
                        else if(i == 5) return new RSVector(0,0,0,0,7);
                        else if(i == 6) return new RSMarker(0,0,Display::X,10);
                        else if(i == 7) return new RSText(0,0,"");
                        else if(i == 8) return new RSComposite();
                        else            return NULL;
                }
                static RegionShape* creationShape(unsigned int i) {
                        return creationShape((int)i);
                }

                static casacore::String creationName(int i) {
                        if(i < 0)       return "";
                        else if(i == 0) return "ellipse";
                        else if(i == 1) return "circle";
                        else if(i == 2) return "rectangle";
                        else if(i == 3) return "polygon";
                        else if(i == 4) return "line";
                        else if(i == 5) return "vector";
                        else if(i == 6) return "marker";
                        else if(i == 7) return "text";
                        else if(i == 8) return "composite";
                        else            return "";
                }
                static casacore::String creationName(unsigned int i) {
                        return creationName((int)i);
                }

        private slots:
                // When the "create" button is clicked.
                void create();
        };


// Specialized widget for creating a new polygon.
        class QtNewRSPolygon : public QWidget {
                Q_OBJECT

        public:
                // Constructor which takes the polygon to modify.
                QtNewRSPolygon(RSPolygon* poly, QtRegionShapeManager* manager);

                // Destructor.
                ~QtNewRSPolygon();

                // See QtEditRegionShape::enteredCoordinatesAreValid.
                bool enteredCoordinatesAreValid(casacore::String& reason) const;

        public slots:
                // Applies the entered values to the RSPolygon.
                void apply();

        private:
                RSPolygon* m_polygon; // Polygon.
                QtEditRegionShape* m_editor; // Region shape editor.
                QListWidget* m_coordList; // casacore::List widget for displaying entered coordinates
                QFrame* m_coordFrame;     // Frame that holds list widget and buttons.
                vector<std::pair<QString, QString> > m_enteredCoords; // Entered coordinates
                QLineEdit* m_coordXEdit, *m_coordYEdit; // casacore::Coordinate edits.

        private slots:
                // Add the values entered in the line edits to the coord list.
                void addCoordinates();

                // Moves the selected coordinate up in the list.
                void listMoveUp();

                // Moves the selected coordinate down in the list.
                void listMoveDown();

                // Deletes the selected coordinate in the list.
                void listDelete();
        };


// Specialized widget for creating a new composite.
        class QtNewRSComposite : public QWidget {
                Q_OBJECT

        public:
                // Constructor which takes the composite to modify.
                QtNewRSComposite(RSComposite* comp, QtRegionShapeManager* manager);

                // Destructor.
                ~QtNewRSComposite();

                // Returns whether the entered values are valid or not.  Returns true if
                // at least one child is entered, and all children have valid coordinates.
                bool enteredValuesAreValid(casacore::String& reason) const;

        public slots:
                // Applies the entered values to the RSComposite.
                void apply();

        private:
                // Top-lebel members.
                // <group>
                QtRegionShapeManager* m_manager;
                RSComposite* m_composite;
                std::vector<RegionShape*> m_children;
                QStackedLayout* m_layout;
                // </group>

                // First screen
                // <group>
                QRadioButton* m_dependentChildren;
                QRadioButton* m_newShapes;
                QLabel* m_dependentLabel1, *m_dependentLabel2;
                // </group>

                // Second screen: new shapes
                // <group>
                QListWidget* m_newShapeList;
                QComboBox* m_editChooser;
                QStackedLayout* m_editWidgets;
                // </group>

                // Second screen: existing shapes
                // <group>
                QListWidget* m_existingList, *m_moveList;
                std::vector<RegionShape*> m_existingShapes, m_moveShapes;
                // </group>


                // GUI initialization methods.
                // <group>
                QWidget* initFirstScreen();
                QWidget* initSecondScreen1();
                QWidget* initSecondScreen2();
                // </group>

                // Updated m_existingList and m_moveList based on m_existingShapes and
                // m_movesshapes.
                void updateLists();

                // Returns the adjusted index (m_existingList => m_existingShapes).
                unsigned int adjustedIndex(int row);

        private slots:
                // Switches to second page.
                void next();

                // New shapes

                // Adds a new shape to the composite.
                void nAddShape(RegionShape* shape);

                // Moves the selected shape up in the list.
                void nListUp();

                // Moves the selected shape down in the list.
                void nListDown();

                // Deletes the selected shape in the list.
                void nListDelete();

                // Existing shapes

                // Adds the selected existing shape to the composite.
                void eAddShape();

                // Remove the selected shape from the composite.
                void eRemoveShape();

                // Moves the selected shape up in the list.
                void eListUp();

                // Moves the selected shape down in the list.
                void eListDown();
        };

}

#endif /* QTNEWREGIONSHAPE_QO_H */