/*
 * Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "mvdQuicklookViewRenderer.h"


/*****************************************************************************/
/* INCLUDE SECTION                                                           */

//
// Qt includes (sorted by alphabetic order)
//// Must be included before system/custom includes.
#include <QOpenGLWidget>
// #include <QtOpenGL>

//
// System includes (sorted by alphabetic order)
// necessary for the opengl variables and methods

//
// ITK includes (sorted by alphabetic order)

//
// OTB includes (sorted by alphabetic order)
#include "otbGlImageActor.h"

//
// Monteverdi includes (sorted by alphabetic order)
#include "mvdStackedLayerModel.h"
#include "mvdTypes.h"
#include "mvdVectorImageModel.h"

namespace mvd
{
/*
  TRANSLATOR mvd::QuicklookViewRenderer

  Necessary for lupdate to be aware of C++ namespaces.

  Context comment for translator.
*/


/*****************************************************************************/
/* CONSTANTS                                                                 */


/*****************************************************************************/
/* STATIC IMPLEMENTATION SECTION                                             */


/*****************************************************************************/
/* CLASS IMPLEMENTATION SECTION                                              */
/*****************************************************************************/
QuicklookViewRenderer::QuicklookViewRenderer(QObject* p) : ImageViewRenderer(p), m_GlRoiActor(otb::GlROIActor::New())
{
  assert(!m_GlRoiActor.IsNull());

  setObjectName("QuicklookViewRenderer");

  m_EffectsEnabled = false;
}

/*****************************************************************************/
QuicklookViewRenderer::~QuicklookViewRenderer()
{
}

/*****************************************************************************/
AbstractImageViewRenderer::RenderingContext* QuicklookViewRenderer::NewRenderingContext() const
{
  RenderingContext* context = new QuicklookViewRenderer::RenderingContext();

#if USE_VIEW_SETTINGS_SIDE_EFFECT
#else
  assert(!m_GlView.IsNull());

  //
  // Share otb::GlViewRendering settings with manipulator using
  // RenderingContext. Manipulator can then setup otb::ViewSettings
  // directly by side-effect.
  context->m_ViewSettings = m_GlView->GetSettings();
#endif

  return context;
}

/*******************************************************************************/
void QuicklookViewRenderer::virtual_SetProjection()
{
  SetWktAndKwl();
}

/*******************************************************************************/
void QuicklookViewRenderer::virtual_UpdateProjection()
{
  SetWktAndKwl();
}

/*******************************************************************************/
void QuicklookViewRenderer::SetWktAndKwl()
{
// qDebug() << this << "::SetWktAndKwl()";

#if DISABLE_QUICKLOOK_VIEW
  return;
#endif

  assert(GetLayerStack() != NULL);

  if (GetLayerStack()->IsEmpty())
    return;

  otb::GlImageActor::Pointer referenceGlImageActor(GetReferenceActor<otb::GlImageActor>());

  assert(!referenceGlImageActor.IsNull());

  m_GlRoiActor->SetKwl(referenceGlImageActor->GetKwl());
  m_GlRoiActor->SetWkt(referenceGlImageActor->GetWkt());
}

/*******************************************************************************/
void QuicklookViewRenderer::virtual_FinishScene()
{
  // qDebug() << this << "::virtual_FinishScene()";

  assert(!m_GlView.IsNull());

#if DISABLE_QUICKLOOK_VIEW
  return;
#endif

  if( IsGLSLEnabled() )
    {
    m_GlRoiActor->CreateShader();
    }

  std::string key( m_GlView->AddActor( m_GlRoiActor, "ROI" ) );

  m_GlRoiActor->SetVisible(true);
  m_GlRoiActor->SetOverlay(true);

  // qDebug() << "Added roi-actor:" << FromStdString( key );

  /*
  ColorType color;

  color.Fill( 1.0 );

  m_GlRoiActor->SetColor( color );
  */
  m_GlRoiActor->SetFill(false);
  m_GlRoiActor->SetAlpha(0.2);

  m_GlView->MoveActorToEndOfRenderingOrder(key, true);
}

/*****************************************************************************/
void QuicklookViewRenderer::UpdateActors(const AbstractImageViewRenderer::RenderingContext* c)
{
  // qDebug() << this << "::UpdateActors()";

  assert(c != NULL);

  ImageViewRenderer::UpdateActors(c);

  assert(c == dynamic_cast<const QuicklookViewRenderer::RenderingContext*>(c));

  const QuicklookViewRenderer::RenderingContext* context = dynamic_cast<const QuicklookViewRenderer::RenderingContext*>(c);

  // Coverity-19842
  // {
  assert(context != NULL);
  // }

  /*
  qDebug()
    << "ROI-origin:"
    << context->m_RoiOrigin[ 0 ] << "," << context->m_RoiOrigin[ 1 ]
    << "ROI-extent:"
    << context->m_RoiExtent[ 0 ] << "," << context->m_RoiExtent[ 1 ];
  */

  m_GlRoiActor->SetUL(context->m_RoiOrigin);
  m_GlRoiActor->SetLR(context->m_RoiExtent);
}

/*****************************************************************************/
/* SLOTS                                                                     */
/*****************************************************************************/

} // end namespace 'mvd'
