//  SMESH SMESHGUI : GUI for SMESH 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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
//
//
//
//  File   : SMESHGUI_PrecisionDlg.cxx
//  Author : Sergey LITONIN
//  Module : SMESH

#include "SMESHGUI_PrecisionDlg.h"

#include "SMESHGUI.h"
#include "SMESHGUI_VTKUtils.h"
#include "SMESHGUI_Utils.h"

#include "SUIT_Desktop.h"
#include "SUIT_ResourceMgr.h"

#include <qgroupbox.h>
#include <qpushbutton.h>
#include <qcheckbox.h>
#include <qspinbox.h>
#include <qlayout.h>
#include <qlabel.h>

#define SPACING 5
#define MARGIN  10
#define DEFAULT_VAL 10
#define RANGE 128

/*!
 *  Class       : SMESHGUI_PrecisionDlg
 *  Description : Dialog to specify precision of mesh quality controls
 */

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::SMESHGUI_PrecisionDlg
// Purpose : Constructor
//=======================================================================
SMESHGUI_PrecisionDlg::SMESHGUI_PrecisionDlg ( SMESHGUI* theModule )
     : QDialog( SMESH::GetDesktop( theModule ), "SMESHGUI_PrecisionDlg", true,
                WStyle_Customize | WStyle_NormalBorder | WStyle_Title | WStyle_SysMenu ),
     mySMESHGUI( theModule )
{
  setCaption(tr("CAPTION"));

  QVBoxLayout* aDlgLay = new QVBoxLayout (this, MARGIN, SPACING);

  QFrame* aMainFrame = createMainFrame  (this);
  QFrame* aBtnFrame  = createButtonFrame(this);

  aDlgLay->addWidget(aMainFrame);
  aDlgLay->addWidget(aBtnFrame);

  aDlgLay->setStretchFactor(aMainFrame, 1);

  setMinimumWidth((int)(QFontMetrics(font()).width(tr("CAPTION")) * 1.5));

  Init();
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::~SMESHGUI_PrecisionDlg
// Purpose : Destructor
//=======================================================================
SMESHGUI_PrecisionDlg::~SMESHGUI_PrecisionDlg()
{
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::createButtonFrame
// Purpose : Create frame containing buttons
//=======================================================================
QFrame* SMESHGUI_PrecisionDlg::createButtonFrame (QWidget* theParent)
{
  QGroupBox* aGrp = new QGroupBox (1, Qt::Vertical, theParent);
  aGrp->setFrameStyle(QFrame::NoFrame);
  aGrp->setInsideMargin(0);

  myOKBtn = new QPushButton (tr("SMESH_BUT_OK"), aGrp);

  QLabel* aLbl = new QLabel (aGrp);
  aLbl->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));

  myCancelBtn = new QPushButton (tr("SMESH_BUT_CANCEL"), aGrp);

  connect(myOKBtn, SIGNAL(clicked()), SLOT(onOk()));
  connect(myCancelBtn, SIGNAL(clicked()), SLOT(onClose()));

  return aGrp;
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg:: createMainFrame
// Purpose : Create frame containing dialog's input fields
//=======================================================================
QFrame* SMESHGUI_PrecisionDlg::createMainFrame (QWidget* theParent)
{
  QGroupBox* aGrp = new QGroupBox(2, Qt::Horizontal, theParent);
  new QLabel (tr("PRECISION"), aGrp);
  mySpinBox = new QSpinBox (0, RANGE, 1, aGrp);
  myNotUseChk = new QCheckBox (tr("NOT_USE"), aGrp);

  connect(myNotUseChk, SIGNAL(toggled(bool)), SLOT(onNotUse()));

  return aGrp;
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::Init
// Purpose : Initialize dialog fields
//=======================================================================
void SMESHGUI_PrecisionDlg::Init()
{
  bool isOk = false;
  int aVal = DEFAULT_VAL;
  SUIT_ResourceMgr* mgr = SMESH::GetResourceMgr( mySMESHGUI );
  if (mgr && mgr->hasValue("SMESH", "ControlsPrecision")) {
    QString aStr = mgr->stringValue("SMESH", "ControlsPrecision");
    aVal = aStr.toInt(&isOk);
  }

  mySpinBox->setValue(isOk ? aVal : DEFAULT_VAL);
  myNotUseChk->setChecked(!isOk);

  onNotUse();

  mySMESHGUI->SetActiveDialogBox((QDialog*)this);
  connect(mySMESHGUI, SIGNAL(SignalCloseAllDialogs()), SLOT(onClose()));
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::onOk
// Purpose : SLOT. Called when OK button pressed
//=======================================================================
void SMESHGUI_PrecisionDlg::onOk()
{
  SUIT_ResourceMgr* mgr = SMESH::GetResourceMgr( mySMESHGUI );
  if (myNotUseChk->isChecked()) {
    if (mgr) {
      mgr->remove("SMESH", "ControlsPrecision");
    }
    SMESH::SetControlsPrecision(-1);
  } else {
    mySpinBox->clearFocus();
    int aVal = mySpinBox->value();
    if (mgr) {
      mgr->setValue("SMESH", "ControlsPrecision", QString("%1").arg(aVal));
    }
    SMESH::SetControlsPrecision(aVal);
  }

  disconnect(mySMESHGUI, 0, this, 0);
  mySMESHGUI->ResetState() ;
  accept();
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::onClose
// Purpose : SLOT. Called when "Cancel" button pressed
//=======================================================================
void SMESHGUI_PrecisionDlg::onClose()
{
  disconnect( mySMESHGUI, 0, this, 0);
  reject();
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::closeEvent
// Purpose :
//=======================================================================
void SMESHGUI_PrecisionDlg::closeEvent (QCloseEvent*)
{
  onClose();
}

//=======================================================================
// name    : SMESHGUI_PrecisionDlg::onNotUse
// Purpose : SLOT. Called when state of "Do not use" check box changed
//=======================================================================
void SMESHGUI_PrecisionDlg::onNotUse()
{
  mySpinBox->setEnabled(!myNotUseChk->isChecked());
}