OCCT

// Created on: 2007-01-25
// Created by: Sergey KOCHETKOV
// Copyright (c) 2007-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <MeshVS_DataSource.hxx>
#include <MeshVS_Mesh.hxx>
#include <MeshVS_MeshOwner.hxx>
#include <PrsMgr_PresentationManager.hxx>
#include <SelectMgr_SelectableObject.hxx>
#include <Standard_Type.hxx>
#include <TColStd_HPackedMapOfInteger.hxx>
#include <TColStd_PackedMapOfInteger.hxx>
#include <NCollection_PackedMapAlgo.hxx>

IMPLEMENT_STANDARD_RTTIEXT(MeshVS_MeshOwner, SelectMgr_EntityOwner)

#ifndef MeshVS_PRSBUILDERHXX
#endif

//=================================================================================================

MeshVS_MeshOwner::MeshVS_MeshOwner(const SelectMgr_SelectableObject*     theSelObj,
                                   const occ::handle<MeshVS_DataSource>& theDS,
                                   const int                             thePriority)
    : SelectMgr_EntityOwner(theSelObj, thePriority)
{
  myLastID = -1;
  if (!theDS.IsNull())
  {
    myDataSource = theDS;
  }
}

//=================================================================================================

const occ::handle<MeshVS_DataSource>& MeshVS_MeshOwner::GetDataSource() const
{
  return myDataSource;
}

//=================================================================================================

const occ::handle<TColStd_HPackedMapOfInteger>& MeshVS_MeshOwner::GetSelectedNodes() const
{
  return mySelectedNodes;
}

//=================================================================================================

const occ::handle<TColStd_HPackedMapOfInteger>& MeshVS_MeshOwner::GetSelectedElements() const
{
  return mySelectedElems;
}

//=================================================================================================

void MeshVS_MeshOwner::AddSelectedEntities(const occ::handle<TColStd_HPackedMapOfInteger>& Nodes,
                                           const occ::handle<TColStd_HPackedMapOfInteger>& Elems)
{
  if (mySelectedNodes.IsNull())
  {
    mySelectedNodes = Nodes;
  }
  else if (!Nodes.IsNull())
  {
    NCollection_PackedMapAlgo::Unite(mySelectedNodes->ChangeMap(), Nodes->Map());
  }
  if (mySelectedElems.IsNull())
  {
    mySelectedElems = Elems;
  }
  else if (!Elems.IsNull())
  {
    NCollection_PackedMapAlgo::Unite(mySelectedElems->ChangeMap(), Elems->Map());
  }
}

//=================================================================================================

void MeshVS_MeshOwner::ClearSelectedEntities()
{
  mySelectedNodes.Nullify();
  mySelectedElems.Nullify();
}

//=================================================================================================

const occ::handle<TColStd_HPackedMapOfInteger>& MeshVS_MeshOwner::GetDetectedNodes() const
{
  return myDetectedNodes;
}

//=================================================================================================

const occ::handle<TColStd_HPackedMapOfInteger>& MeshVS_MeshOwner::GetDetectedElements() const
{
  return myDetectedElems;
}

//=================================================================================================

void MeshVS_MeshOwner::SetDetectedEntities(const occ::handle<TColStd_HPackedMapOfInteger>& Nodes,
                                           const occ::handle<TColStd_HPackedMapOfInteger>& Elems)
{
  myDetectedNodes = Nodes;
  myDetectedElems = Elems;
  if (IsSelected())
  {
    SetSelected(false);
  }
}

//=================================================================================================

void MeshVS_MeshOwner::HilightWithColor(const occ::handle<PrsMgr_PresentationManager>& thePM,
                                        const occ::handle<Prs3d_Drawer>&               theStyle,
                                        const int /*theMode*/)
{
  occ::handle<SelectMgr_SelectableObject> aSelObj;
  if (HasSelectable())
  {
    aSelObj = Selectable();
  }

  if (thePM->IsImmediateModeOn() && aSelObj->IsKind(STANDARD_TYPE(MeshVS_Mesh)))
  {
    // Update last detected entity ID
    occ::handle<TColStd_HPackedMapOfInteger> aNodes = GetDetectedNodes();
    occ::handle<TColStd_HPackedMapOfInteger> aElems = GetDetectedElements();
    if (!aNodes.IsNull() && aNodes->Map().Extent() == 1)
    {
      TColStd_PackedMapOfInteger::Iterator anIt(aNodes->Map());
      if (myLastID != anIt.Key())
      {
        myLastID = anIt.Key();
      }
    }
    else if (!aElems.IsNull() && aElems->Map().Extent() == 1)
    {
      TColStd_PackedMapOfInteger::Iterator anIt(aElems->Map());
      if (myLastID != anIt.Key())
      {
        myLastID = anIt.Key();
      }
    }

    // hilight detected entities
    occ::handle<MeshVS_Mesh> aMesh = occ::down_cast<MeshVS_Mesh>(aSelObj);
    aMesh->HilightOwnerWithColor(thePM, theStyle, this);
  }
}

void MeshVS_MeshOwner::Unhilight(const occ::handle<PrsMgr_PresentationManager>& thePM, const int)
{
  SelectMgr_EntityOwner::Unhilight(thePM);

  occ::handle<TColStd_HPackedMapOfInteger> aNodes = GetDetectedNodes();
  occ::handle<TColStd_HPackedMapOfInteger> aElems = GetDetectedElements();
  if ((!aNodes.IsNull() && !aNodes->Map().Contains(myLastID))
      || (!aElems.IsNull() && !aElems->Map().Contains(myLastID)))
  {
    return;
  }
  // Reset last detected ID
  myLastID = -1;
}

bool MeshVS_MeshOwner::IsForcedHilight() const
{
  bool aHilight = true;
  int  aKey     = -1;
  if (myLastID > 0)
  {
    // Check the detected entity and
    // allow to hilight it if it differs from the last detected entity <myLastID>
    occ::handle<TColStd_HPackedMapOfInteger> aNodes = GetDetectedNodes();
    if (!aNodes.IsNull() && aNodes->Map().Extent() == 1)
    {
      TColStd_PackedMapOfInteger::Iterator anIt(aNodes->Map());
      aKey = anIt.Key();
      if (myLastID == aKey)
      {
        aHilight = false;
      }
    }
    occ::handle<TColStd_HPackedMapOfInteger> aElems = GetDetectedElements();
    if (!aElems.IsNull() && aElems->Map().Extent() == 1)
    {
      TColStd_PackedMapOfInteger::Iterator anIt(aElems->Map());
      aKey = anIt.Key();
      if (myLastID == aKey)
      {
        aHilight = false;
      }
    }
  }
  return aHilight;
}