// Created on: 2017-06-16
// Created by: Natalia ERMOLAEVA
// Copyright (c) 2017 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 <inspector/TInspector_Communicator.hxx>

#include <OSD_Directory.hxx>
#include <OSD_Environment.hxx>
#include <TCollection_AsciiString.hxx>

#include <inspector/TInspector_Window.hxx>

#include <Standard_WarningsDisable.hxx>
#include <QApplication>
#include <QDir>
#include <QMainWindow>
#include <QWidget>
#include <Standard_WarningsRestore.hxx>

// =======================================================================
// function : Constructor
// purpose :
// =======================================================================
TInspector_Communicator::TInspector_Communicator()
{
  if (!qApp)
  {
    static int   argc   = 1;
    static char* argv[] = {(char*)"", 0};
#if QT_VERSION > 0x050000
    TCollection_AsciiString aPlugindsDirName;
    if (TInspector_Communicator::PluginsDir(aPlugindsDirName))
      QApplication::addLibraryPath(aPlugindsDirName.ToCString());
#endif
    new QApplication(argc, argv);
  }
  myWindow = new TInspector_Window();
}

// =======================================================================
// function : PluginsDir
// purpose :
// =======================================================================
Standard_Boolean TInspector_Communicator::PluginsDir(TCollection_AsciiString& thePlugindsDirName)
{
  OSD_Environment         anEnvironment("QTDIR");
  TCollection_AsciiString aQtDirValue = anEnvironment.Value();
  if (!aQtDirValue.IsEmpty())
  {
    thePlugindsDirName = aQtDirValue + "/plugins";
    return Standard_True;
  }
  anEnvironment                      = OSD_Environment("PATH");
  TCollection_AsciiString aPathValue = anEnvironment.Value();
  TCollection_AsciiString aPathSep =
#ifdef _WIN32
    ';';
#else
    ':';
#endif
  while (!aPathValue.IsEmpty())
  {
    Standard_Integer aSepIndex = aPathValue.FirstLocationInSet(aPathSep, 1, aPathValue.Length());
    if (aSepIndex <= 1)
      break;

    TCollection_AsciiString aCurPath = aPathValue.SubString(1, aSepIndex - 1);
    aPathValue                       = aSepIndex < aPathValue.Length()
                                         ? aPathValue.SubString(aSepIndex + 1, aPathValue.Length())
                                         : "";
    if (aCurPath.IsEmpty())
      continue;

    aCurPath += "/../plugins";
    OSD_Path      aPath(aCurPath);
    OSD_Directory aCurDir(aPath);
    if (aCurDir.Exists())
    {
      thePlugindsDirName = aCurPath;
      return Standard_True;
    }
  }
  return Standard_False;
}

// =======================================================================
// function : SetVisible
// purpose :
// =======================================================================
void TInspector_Communicator::SetVisible(const bool theVisible)
{
  myWindow->GetMainWindow()->setVisible(theVisible);
#ifndef _WIN32
  // window is not visualized on X11 patform under DRAW tool without the next row
  QApplication::processEvents();
#endif
}

// =======================================================================
// function : Move
// purpose :
// =======================================================================
void TInspector_Communicator::Move(const int theXPosition, const int theYPosition)
{
  myWindow->GetMainWindow()->move(theXPosition, theYPosition);
}