//  GEOM GEOMGUI : GUI for Geometry component
//
//  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License.
//
//  This library 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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
//  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//
//
//  File   : MeasureGUI_AngleDlg.cxx
//  Author : Julia DOROVSKIKH
//  Module : GEOM
//  $Header$

#include "MeasureGUI_AngleDlg.h"

#include "MeasureGUI_2Sel1LineEdit_QTD.h"

#include "GEOMBase.h"
#include "GEOM_Displayer.h"
#include "DlgRef_SpinBox.h"
#include "GeometryGUI.h"

#include "SUIT_Session.h"
#include "SUIT_ViewWindow.h"
#include "SUIT_MessageBox.h"
#include "SOCC_Prs.h"
#include "SOCC_ViewModel.h"
#include "SalomeApp_Tools.h"
#include "SalomeApp_Application.h"

// OCCT Includes
#include <AIS_AngleDimension.hxx>
#include <AIS_ListIteratorOfListOfInteractive.hxx>
#include <BRep_Tool.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <TopExp.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <Geom_Plane.hxx>
#include <gce_MakePln.hxx>
#include <Precision.hxx>

// QT Includes
#include <qlineedit.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qpushbutton.h>
#include <qradiobutton.h>
#include <qbuttongroup.h>

#include "GEOMImpl_Types.hxx"

#include "utilities.h"

#include <Standard_Failure.hxx>
#include <Standard_ErrorHandler.hxx> // CAREFUL ! position of this file is critic : see Lucien PIGNOLONI / OCC

//=================================================================================
// class    : MeasureGUI_AngleDlg()
// purpose  : Constructs a MeasureGUI_AngleDlg which is a child of 'parent', with the
//            name 'name' and widget flags set to 'f'.
//            The dialog will by default be modeless, unless you set 'modal' to
//            TRUE to construct a modal dialog.
//=================================================================================
MeasureGUI_AngleDlg::MeasureGUI_AngleDlg (GeometryGUI* GUI, QWidget* parent)
  : MeasureGUI_Skeleton(GUI, parent, "MeasureGUI_AngleDlg")
{
  QPixmap image0 (SUIT_Session::session()->resourceMgr()->loadPixmap("GEOM", tr("ICON_DLG_ANGLE")));
  QPixmap image1 (SUIT_Session::session()->resourceMgr()->loadPixmap("GEOM", tr("ICON_SELECT")));

  setCaption(tr("GEOM_MEASURE_ANGLE_TITLE"));

  // Widgets

  GroupConstructors->setTitle(tr("GEOM_MEASURE_ANGLE_ANGLE"));
  RadioButton1->setPixmap(image0);

  myGrp = new MeasureGUI_2Sel1LineEdit_QTD(this, "myGrp");
  myGrp->GroupBox1->setTitle(tr("GEOM_MEASURE_ANGLE_OBJ"));
  myGrp->TextLabel1->setText(tr("GEOM_OBJECT_I").arg("1"));
  myGrp->TextLabel2->setText(tr("GEOM_OBJECT_I").arg("2"));
  myGrp->TextLabel3->setText(tr("GEOM_MEASURE_ANGLE_IS"));
  myGrp->LineEdit3->setReadOnly(TRUE);
  myGrp->PushButton1->setPixmap(image1);
  myGrp->PushButton2->setPixmap(image1);
  myGrp->LineEdit1->setReadOnly(true);
  myGrp->LineEdit2->setReadOnly(true);

  Layout1->addWidget(myGrp, 1, 0);

  // Help page reference
  myHelpFileName = "using_measurement_tools_page.html#angle_anchor";

  // Initialisation
  Init();
}

//=================================================================================
// function : ~MeasureGUI_AngleDlg()
// purpose  : Destroys the object and frees any allocated resources
//=================================================================================
MeasureGUI_AngleDlg::~MeasureGUI_AngleDlg()
{
}

//=================================================================================
// function : Init()
// purpose  :
//=================================================================================
void MeasureGUI_AngleDlg::Init()
{
  mySelBtn   = myGrp->PushButton1;
  mySelEdit  = myGrp->LineEdit1;
  mySelBtn2  = myGrp->PushButton2;
  mySelEdit2 = myGrp->LineEdit2;

  myEditCurrentArgument = mySelEdit;

  connect(mySelEdit2, SIGNAL(returnPressed()), this, SLOT(LineEditReturnPressed()));
  connect(mySelBtn2, SIGNAL(clicked()), this, SLOT(SetEditCurrentArgument()));

  globalSelection(GEOM_LINE);
  MeasureGUI_Skeleton::Init();
}


//=================================================================================
// function : SelectionIntoArgument()
// purpose  : Called when selection has changed
//=================================================================================
void MeasureGUI_AngleDlg::SelectionIntoArgument()
{
  Standard_Boolean testResult = Standard_False;
  GEOM::GEOM_Object_var aSelectedObject =
    GEOMBase::ConvertIOinGEOMObject(firstIObject(), testResult);

  if (!testResult)
    aSelectedObject = GEOM::GEOM_Object::_nil();

  if (myEditCurrentArgument == mySelEdit)
    myObj = aSelectedObject;
  else
    myObj2 = aSelectedObject;

  processObject();
}

//=================================================================================
// function : processObject()
// purpose  : Fill dialogs fields in accordance with myObj and myObj2
//=================================================================================
void MeasureGUI_AngleDlg::processObject()
{
  myGrp->LineEdit1->setText(!myObj->_is_nil()  ? GEOMBase::GetName(myObj ) : "");
  myGrp->LineEdit2->setText(!myObj2->_is_nil() ? GEOMBase::GetName(myObj2) : "");

  double anAngle = 0.;
  if (getParameters(anAngle))
  {
    myGrp->LineEdit3->setText(DlgRef_SpinBox::PrintDoubleValue(anAngle));
    redisplayPreview();
  }
  else
  {
    myGrp->LineEdit3->setText("");
    erasePreview();
  }
}

//=================================================================================
// function : getParameters()
// purpose  : Get angle between objects
//=================================================================================
bool MeasureGUI_AngleDlg::getParameters (double& theAngle)
{
  QString msg;
  if (isValid(msg)) {
    try {
      theAngle = GEOM::GEOM_IMeasureOperations::_narrow(getOperation())->GetAngle(myObj, myObj2);
    }
    catch(const SALOME::SALOME_Exception& e) {
      SalomeApp_Tools::QtCatchCorbaException(e);
      return false;
    }

    bool isDone = getOperation()->IsDone();
    if (!isDone) {
      CORBA::String_var aMsg = getOperation()->GetErrorCode();
      SUIT_MessageBox::warn1((QWidget*)myGeomGUI->getApp()->desktop(),
                             QObject::tr("WRN_WARNING"),
                             QObject::tr(aMsg.in()),
                             QObject::tr("BUT_OK"));
    }
    return isDone;
  }

  return false;
}

//=================================================================================
// function : SetEditCurrentArgument()
// purpose  :
//=================================================================================
void MeasureGUI_AngleDlg::SetEditCurrentArgument()
{
  QPushButton* send = (QPushButton*)sender();

  if (send == mySelBtn) {
    mySelEdit->setFocus();
    myEditCurrentArgument = mySelEdit;
  }
  else {
    mySelEdit2->setFocus();
    myEditCurrentArgument = mySelEdit2;
  }

  globalSelection(GEOM_LINE);
  SelectionIntoArgument();
}

//=================================================================================
// function : LineEditReturnPressed()
// purpose  :
//=================================================================================
void MeasureGUI_AngleDlg::LineEditReturnPressed()
{
  QLineEdit* send = (QLineEdit*)sender();

  if (send == mySelEdit)
    myEditCurrentArgument = mySelEdit;
  else
    myEditCurrentArgument = mySelEdit2;

  if (GEOMBase::SelectionByNameInDialogs(this, mySelEdit->text(), selectedIO()))
    mySelEdit->setText(mySelEdit->text());
}

//=================================================================================
// function : buildPrs()
// purpose  :
//=================================================================================
SALOME_Prs* MeasureGUI_AngleDlg::buildPrs()
{
  double anAngle = 0.;

  SUIT_ViewWindow* vw = SUIT_Session::session()->activeApplication()->desktop()->activeWindow();

  if (myObj->_is_nil() || myObj2->_is_nil() || !getParameters(anAngle) ||
      vw->getViewManager()->getType() != OCCViewer_Viewer::Type())
    return 0;

  if (anAngle > Precision::Angular())
  {
    try
    {
#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
      OCC_CATCH_SIGNALS;
#endif
      TopoDS_Shape S1, S2;
      if (GEOMBase::GetShape(myObj , S1, TopAbs_EDGE) &&
          GEOMBase::GetShape(myObj2, S2, TopAbs_EDGE))
      {
        TopoDS_Edge anEdge1 = TopoDS::Edge(S1);
        TopoDS_Edge anEdge2 = TopoDS::Edge(S2);

        // Build a plane for angle dimension presentation {P11, P12, P3}
        TopoDS_Vertex V11, V12, V21, V22;
        TopExp::Vertices(anEdge1, V11, V12);
        TopExp::Vertices(anEdge2, V21, V22);

        gp_Pnt aP11 = BRep_Tool::Pnt(TopExp::FirstVertex(anEdge1));
        gp_Pnt aP12 = BRep_Tool::Pnt(TopExp::LastVertex (anEdge1));

        gp_Pnt aP21 = BRep_Tool::Pnt(TopExp::FirstVertex(anEdge2));
        gp_Pnt aP22 = BRep_Tool::Pnt(TopExp::LastVertex (anEdge2));

        //        *P3
        //         \
        //          \
        //           *P22
        //          /
        //         /
        // P11    /         P12
        // *-----/----------*
        //  \   /
        //   \ /
        //    *P21
        gp_Pnt aP3 (aP22.XYZ() + aP11.XYZ() - aP21.XYZ());

        gce_MakePln gce_MP (aP11, aP12, aP3);
        Handle(Geom_Plane) aPlane = new Geom_Plane(gce_MP.Value());

        // Build the angle dimension presentation
        QString aLabel;
        aLabel.sprintf("%.1f", anAngle);

        Handle(AIS_AngleDimension) anIO = new AIS_AngleDimension
          (anEdge1, anEdge2, aPlane, anAngle * PI180,
           TCollection_ExtendedString((Standard_CString)aLabel.latin1()));

        SOCC_Prs* aPrs =
          dynamic_cast<SOCC_Prs*>(((SOCC_Viewer*)(vw->getViewManager()->getViewModel()))->CreatePrs(0));

        if (aPrs)
          aPrs->AddObject(anIO);

        return aPrs;
      }
    }
    catch(Standard_Failure)
    {
    }
  }

  return 0;
}

//=================================================================================
// function : isValid()
// purpose  :
//=================================================================================
bool MeasureGUI_AngleDlg::isValid(QString& msg)
{
  return MeasureGUI_Skeleton::isValid(msg) && !myObj2->_is_nil();
}