/*=========================================================================

  Program:   ParaView
  Module:    vtkSMViewResolutionDomain.cxx

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "vtkSMViewResolutionDomain.h"

#include "vtkObjectFactory.h"
#include "vtkSMUncheckedPropertyHelper.h"
#include "vtkSMViewLayoutProxy.h"
#include "vtkSMViewProxy.h"

vtkStandardNewMacro(vtkSMViewResolutionDomain);
//----------------------------------------------------------------------------
vtkSMViewResolutionDomain::vtkSMViewResolutionDomain()
{
}

//----------------------------------------------------------------------------
vtkSMViewResolutionDomain::~vtkSMViewResolutionDomain()
{
}

//----------------------------------------------------------------------------
void vtkSMViewResolutionDomain::Update(vtkSMProperty*)
{
  vtkSMProperty* useLayoutProperty = this->GetRequiredProperty("UseLayout");
  vtkSMProperty* layoutProperty = this->GetRequiredProperty("Layout");
  vtkSMProperty* viewProperty = this->GetRequiredProperty("View");

  int resolution[2] = { 0, 0 };

  // First try to use the PreviewMode property in the vtkSMViewLayoutProxy
  if (layoutProperty)
  {
    if (auto layout = vtkSMViewLayoutProxy::SafeDownCast(
          vtkSMUncheckedPropertyHelper(layoutProperty).GetAsProxy(0)))
    {
      vtkSMUncheckedPropertyHelper(layout, "PreviewMode").Get(resolution, 2);
    }
  }
  // If the PreviewMode property is not set because we were not in preview mode,
  // then use the extent or view size
  if (resolution[0] == 0 && resolution[1] == 0)
  {
    if (useLayoutProperty && vtkSMUncheckedPropertyHelper(useLayoutProperty).GetAsInt() != 0)
    {
      this->GetLayoutResolution(vtkSMViewLayoutProxy::SafeDownCast(
                                  vtkSMUncheckedPropertyHelper(layoutProperty).GetAsProxy(0)),
        resolution);
    }
    else if (viewProperty)
    {
      this->GetViewResolution(
        vtkSMViewProxy::SafeDownCast(vtkSMUncheckedPropertyHelper(viewProperty).GetAsProxy(0)),
        resolution);
    }
  }
  if (resolution[0] != 0 && resolution[1] != 0)
  {
    std::vector<vtkEntry> values;
    values.push_back(vtkEntry(0, resolution[0]));
    values.push_back(vtkEntry(0, resolution[1]));
    this->SetEntries(values);
  }
}

//----------------------------------------------------------------------------
void vtkSMViewResolutionDomain::GetLayoutResolution(vtkSMViewLayoutProxy* layout, int resolution[2])
{
  if (layout)
  {
    int extents[4];
    layout->GetLayoutExtent(extents);
    resolution[0] = extents[1] - extents[0] + 1;
    resolution[1] = extents[3] - extents[2] + 1;
  }
}

//----------------------------------------------------------------------------
void vtkSMViewResolutionDomain::GetViewResolution(vtkSMViewProxy* view, int resolution[2])
{
  if (view)
  {
    vtkSMUncheckedPropertyHelper helper(view, "ViewSize");
    if (helper.GetNumberOfElements() == 2)
    {
      helper.Get(resolution, 2);
    }
  }
}

//----------------------------------------------------------------------------
void vtkSMViewResolutionDomain::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os, indent);
}
