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 /*************************************************************************************
  *  Copyright (C) 2007-2008 by Aleix Pol <aleixpol@kde.org>                          *
  *  Copyright (C) 2012-2013 by Percy Camilo T. Aucahuasi <percy.camilo.ta@gmail.com> *
  *                                                                                   *
  *  This program is free software; you can redistribute it and/or                    *
  *  modify it under the terms of the GNU General Public License                      *
  *  as published by the Free Software Foundation; either version 2                   *
  *  of the License, or (at your option) any later version.                           *
  *                                                                                   *
  *  This program 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 General Public License for more details.                                     *
  *                                                                                   *
  *  You should have received a copy of the GNU General Public License                *
  *  along with this program; if not, write to the Free Software                      *
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA   *
  *************************************************************************************/
 
 #ifndef PLOTSVIEW2D_H
 #define PLOTSVIEW2D_H
 
 #include <QResizeEvent>
 #include <QWheelEvent>
 #include <QMouseEvent>
 #include <QPaintEvent>
 #include <QKeyEvent>
 #include <QWidget>
 #include <QPainter>
 #include <QLabel>
 #include <QPixmap>
 #include <QModelIndex>
 
 #include "analitzawidgets_export.h"
 #include <analitzaplot/plotter2d.h>
 
 class QItemSelectionModel;
 
 namespace Analitza
 {
 
 /**
  * \class PlotsView2D
  * 
  * \ingroup AnalitzaGUIModule
  *
  * \brief Widget that allows visualization of 2D plots.
  *
  * This class lets you create a widget that can draw multiple 2D graphs. This widget 
  * use Plotter2D as a backend.
  */
 
 class ANALITZAWIDGETS_EXPORT PlotsView2D : public QWidget, public Plotter2D
 {
 Q_OBJECT
 
 Q_PROPERTY(bool showGrid READ showGrid WRITE setShowGrid)
 
 /** The default grid color is a soft mix between KColorScheme::NormalBackground and KColorScheme::NormalText (foreground) of QPalette::Active. **/
 Q_PROPERTY(QColor gridColor READ gridColor WRITE setGridColor)
 
 /** The default background color is KColorScheme::NormalBackground of QPalette::Active. **/
 Q_PROPERTY(QColor backgroundColor READ backgroundColor WRITE setBackgroundColor)
 
 Q_PROPERTY(bool autoGridStyle READ autoGridStyle WRITE setAutoGridStyle)
 
 public:
     enum Format { PNG, SVG };
     
     /** Constructor. Constructs a new Graph2D. */
     explicit PlotsView2D(QWidget* parent = nullptr);
     
     ~PlotsView2D() override;
     
     QSize sizeHint() const override { return QSize(100, 100); }
     
     /** Saves the graphs to a file located at @p path. */
     bool toImage(const QString& path, Format f);
     
     /** Returns the viewing port */
     QRectF definedViewport() const;
     
     void setSelectionModel(QItemSelectionModel* selection);
 
 public Q_SLOTS:
     /** Marks the image as dirty and repaints everything. */
     void forceRepaint() override { valid=false; repaint(); }
 
     /** Sets the viewport to a default viewport. */
     void resetViewport() { setViewport(defViewport); }
     
     /** Returns whether it has a little border frame. */
     bool isFramed() const { return m_framed; }
     
     /** Sets whether it has a little border frame. */
     void setFramed(bool fr) { m_framed=fr; }
     
     /** Returns whether it is a read-only widget. */
     bool isReadOnly() const { return m_readonly; }
     
     /** Sets whether it is a read-only widget. */
     void setReadOnly(bool ro);
     
     void snapshotToClipboard();
     
     //exposed from plotter2d as slots...
     void setXAxisLabel(const QString &label) { Plotter2D::setXAxisLabel(label); }
     void setYAxisLabel(const QString &label) { Plotter2D::setYAxisLabel(label); }
     void setGridColor(const QColor &color) { Plotter2D::setGridColor(color); }
     void setTicksShown(QFlags<Qt::Orientation> o) { Plotter2D::setShowTickLabels(o); }
     void setAxesShown(QFlags<Qt::Orientation> o) { Plotter2D::setShowAxes(o); }
     //TODO  set bgcolor, setbgcolormode auto means that colo is chosses based in lumninosisty onf current bgprofiles
     
     /** Zooms in to the Viewport center */
     virtual void zoomIn() { Plotter2D::zoomIn(true); }
         
     /** Zooms out */
     virtual void zoomOut() { Plotter2D::zoomOut(true); }
 
     void modelChanged() override;
     
 private Q_SLOTS:
     void changeViewport(const QRectF& vp) { setViewport(vp); }
     
 Q_SIGNALS:
     /** Emits a status when it changes. */
     void status(const QString &msg);
     
     void viewportChanged(const QRectF&);
 
     void showGridChanged() override;
     
 private:
     //TODO setviewmodemosusemovemode, pan
     /** The graph mode will especify the selection mode we are using at the moment */
     enum GraphMode {
         None=0,     /**< Normal behaviour */
         Pan,        /**< Panning, translates the viewport. */
         Selection   /**< There is a rectangle delimiting a region, for zooming. */
     };
     
 private:
     virtual void viewportChanged() override;
     virtual int currentFunction() const override;
     
     //painting
     QPixmap buffer;
     bool valid;
     QPointF mark;
     QPoint cursorPos;
     
     //events
     void paintEvent( QPaintEvent * ) override;
     void mousePressEvent(QMouseEvent *e) override;
     void mouseReleaseEvent(QMouseEvent *e) override;
     void mouseMoveEvent(QMouseEvent *e) override;
     void keyPressEvent(QKeyEvent * e ) override;
     void wheelEvent(QWheelEvent *e) override;
     void resizeEvent(QResizeEvent *) override;
 
     GraphMode mode;
     QPoint press; QPoint last;
     
     //presentation
     QPointF ant;
     QRectF defViewport;
         
     void sendStatus(const QString& msg) { emit status(msg); }
     bool m_framed;
     bool m_readonly;
     QString m_posText;
     QItemSelectionModel* m_selection;
 };
 
 }
 
 #endif