/*
**
** @RDE_HEADER@
** plan_editor.h
** $Id$
** $HeadURL$
** $Author$
**
** -----------------------------------------------------------------------------------------------
**
** Hardware-Environment: Intel-PC
** Software-Environment: Windows 7, Qt 5.4. ArcGIS 10.2.5
**
** Language ........: C++ 11
**
** -----------------------------------------------------------------------------------------------
**
** Author ...........: Jörg Turla, SPD G, Tel. 3132
**
** -----------------------------------------------------------------------------------------------
**
** Notes .........:
**
**   26.06.2018, JT  : First edition
**
** -----------------------------------------------------------------------------------------------
*/

#pragma once

#include <LtsWidgets/lts_dialog.h>

#include <QFormLayout>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QLineEdit>
#include <QDoubleValidator>
#include <QSlider>


class ViewshedDialog : public LtsWidgets::LtsDialog
{

  Q_OBJECT
  
  public:

    explicit ViewshedDialog( QWidget *parent )
      : LtsWidgets::LtsDialog(parent, LtsWidgets::ButtonCombination::CloseOnly, true)
    {
      setUnchangeable();

      QVBoxLayout *layout = new QVBoxLayout(this);
      QHBoxLayout *layoutH = new QHBoxLayout(this);
      QVBoxLayout *layoutCtrl = new QVBoxLayout(this);
      QFormLayout *layoutParam = new QFormLayout();

      m_slAlpha = new QSlider(Qt::Orientation::Horizontal, this);
      m_leInnerRadius = new QLineEdit(this);
      m_leObserverHeight = new QLineEdit(this);
      m_leTargetHeight = new QLineEdit(this);
      m_leBeamAngle = new QLineEdit(this);

      m_slAlpha->setRange(0, 255);
      m_leInnerRadius->setValidator(new QDoubleValidator(0.0, 10000.0, 3, m_leInnerRadius));
      m_leObserverHeight->setValidator(new QDoubleValidator(0.0, 100.0, 3, m_leObserverHeight));
      m_leTargetHeight->setValidator(new QDoubleValidator(0.0, 100.0, 3, m_leTargetHeight));
      m_leBeamAngle->setValidator(new QDoubleValidator(0.5, 10.0, 3, m_leBeamAngle));

      layout->addSpacing(10);
      layout->addLayout(layoutH);
      layout->addStretch(2);
      layout->addSpacing(10);

      layoutH->addSpacing(10);
      layoutH->addLayout(layoutParam);
      layoutH->addSpacing(10);
      layoutH->addLayout(layoutCtrl);
      layoutH->addSpacing(10);
      layoutH->addStretch(2);

      layoutParam->addRow(tr("Transparency"), m_slAlpha);
      layoutParam->addRow(tr("Inner Radius [m]"), m_leInnerRadius);
      layoutParam->addRow(tr("Observer Height [m]"), m_leObserverHeight);
      layoutParam->addRow(tr("Target Height [m]"), m_leTargetHeight);
      layoutParam->addRow(tr("Angle of Beam [Degree]"), m_leBeamAngle);

      QPushButton *pbCreateViewshed = new QPushButton(QIcon(QStringLiteral("icon:configure_line_of_sight.svg"))       , tr("Create Viewshed"), this);
      QPushButton *pbRemoveViewshed = new QPushButton(QIcon(QStringLiteral("icon:configure_line_of_sight_remove.svg")), tr("Remove Viewshed"), this);
      
      layoutCtrl->addStretch(2);
      layoutCtrl->addSpacing(10);
      layoutCtrl->addWidget(pbCreateViewshed);
      layoutCtrl->addSpacing(10);
      layoutCtrl->addWidget(pbRemoveViewshed);
      layoutCtrl->addSpacing(10);
      layoutCtrl->addStretch(2);

      connect( pbCreateViewshed  , &QPushButton::clicked,  this, &ViewshedDialog::createViewshed   );
      connect( pbRemoveViewshed  , &QPushButton::clicked,  this, &ViewshedDialog::removeViewshed   );

      connect( m_slAlpha         , &QSlider::valueChanged, this, &ViewshedDialog::parameterChanged );
      connect( m_leInnerRadius   , &QLineEdit::textEdited, this, &ViewshedDialog::parameterChanged );
      connect( m_leObserverHeight, &QLineEdit::textEdited, this, &ViewshedDialog::parameterChanged );
      connect( m_leTargetHeight  , &QLineEdit::textEdited, this, &ViewshedDialog::parameterChanged );
      connect( m_leBeamAngle     , &QLineEdit::textEdited, this, &ViewshedDialog::parameterChanged );

      setOnlineHelpFilename(QStringLiteral("Situation-Start_Viewshed"));
    } // ViewshedDialog

    virtual ~ViewshedDialog() = default;

    void retranslate() override
    {
      // lupdate doesn't like translate(tr("foo")) ...
      const QString txt(tr("Viewshed Dialog"));
      translate(txt);
    }
    
    void initValues( double alpha
                   , double viewshedInnerRadius
                   , double viewshedObserverHeight
                   , double viewshedTargetHeight
                   , double viewshedBeamAngle)
    {
      if (alpha < 0.0) alpha = 0.0;
      if (alpha > 1.0) alpha = 1.0;

      m_slAlpha->setValue(int(alpha * 255));
      m_leInnerRadius->setText(QLocale().toString(viewshedInnerRadius));
      m_leObserverHeight->setText(QLocale().toString(viewshedObserverHeight));
      m_leTargetHeight->setText(QLocale().toString(viewshedTargetHeight));
      m_leBeamAngle->setText(QLocale().toString(viewshedBeamAngle));

      // especially needed for virtual keyboard's windowtitle in o/c
      m_leInnerRadius->setToolTip(tr("Inner Radius [m]"));
      m_leObserverHeight->setToolTip(tr("Observer Height [m]"));
      m_leTargetHeight->setToolTip(tr("Target Height [m]"));
      m_leBeamAngle->setToolTip(tr("Angle of Beam [Degree]"));
    }

    double alpha()          const { return double(m_slAlpha->value()) / 255.0; }
    double innerRadius()    const { return QLocale().toDouble( m_leInnerRadius->text() ); }
    double observerHeight() const { return QLocale().toDouble( m_leObserverHeight->text() ); }
    double targetHeight()   const { return QLocale().toDouble( m_leTargetHeight->text() ); }
    double beamAngle()      const { return QLocale().toDouble( m_leBeamAngle->text() ); }
    
  signals:  
  
    void createViewshed();
    void removeViewshed();
    void parameterChanged();
    
  private:
  
    QSlider   * m_slAlpha;
    QLineEdit * m_leInnerRadius;
    QLineEdit * m_leObserverHeight;
    QLineEdit * m_leTargetHeight;
    QLineEdit * m_leBeamAngle;

}; //  ViewshedDialog