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//=============================================================================
//
//                               OpenFlipper
//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
//                           www.openflipper.org
//
//-----------------------------------------------------------------------------
//
//                                License
//
//  OpenFlipper 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 3 of the License, or
//  (at your option) any later version.
//
//  OpenFlipper 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 OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
//
//   $Revision$
//   $Author$
//   $Date$
//
//=============================================================================




//=============================================================================
//
//  CLASS Core - IMPLEMENTATION
//
//=============================================================================


//== INCLUDES =================================================================

// -------------------- mview
#include "Core.hh"
// -------------------- ACG
#include <ACG/Scenegraph/DrawModes.hh>

#include <OpenFlipper/INIFile/INIFile.hh>
#include <OpenFlipper/common/GlobalOptions.hh>
#include <OpenFlipper/common/RecentFiles.hh>

#include <OpenFlipper/BasePlugin/PluginFunctions.hh>

#include <QFile>

#include <OpenFlipper/ACGHelper/DrawModeConverter.hh>

//== IMPLEMENTATION ==========================================================


/** Load the standard options from the given Ini File
* @param _ini Inifile to use
*/
void Core::readApplicationOptions(INIFile& _ini) {
  // Parse standard options
  if ( _ini.section_exists("Options") ) {

    // Load maxRecent Setting
    int mrecent = 6;
    if (_ini.get_entry(mrecent,"Options","MaxRecent"))
      OpenFlipper::Options::maxRecent(mrecent);

    for ( int j = mrecent-1 ; j >= 0; --j) {
      QString file;
      QString key = "recent" + QString::number(j);

      if ( !_ini.get_entry( file , "Options" , key ) )
        continue;

      key = "type" + QString::number(j);
      int type;

      if ( !_ini.get_entry( type , "Options" , key ) )
        continue;

      OpenFlipper::Options::addRecentFile(file, (DataType) type);
    }

    // load ViewModes
    int viewModeCount;
    if (_ini.get_entry(viewModeCount,"Options","ViewModeCount") )
      for (int i=0; i < viewModeCount; i++){
        QString entry;
        QString key = "ViewMode" + QString::number(i);

        if ( !_ini.get_entry( entry , "Options" , key ) ) continue;

        QStringList widgets = entry.split(" ");
        QString mode = widgets.first();
        widgets.removeFirst();

        bool found = false;
        for (int i=0; i < viewModes_.size(); i++)
          if (viewModes_[i]->name == mode)
            found = true;
        if (!found){
          ViewMode* vm = new ViewMode();
          vm->name = mode;
          vm->custom = true;
          vm->visibleWidgets = widgets;
          viewModes_.push_back(vm);
        }

      }

    //load default dataType
    QString type;
    if (_ini.get_entry(type, "Options" , "default_DataType" ))
      OpenFlipper::Options::lastDataType(type);
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    //============================================================================
    // Splash Screen
    //============================================================================
    bool splash;
    if( _ini.get_entry(splash, "Options", "Splash") )
      OpenFlipper::Options::splash(splash);

    //============================================================================
    // Load the startup dir for file dialogs
    //============================================================================
    QString startup_dir;
    if( _ini.get_entry(startup_dir, "Options", "StartupDir") )
      OpenFlipper::Options::currentDir(startup_dir);

    //============================================================================
    // Load the random base color setting
    //============================================================================
    bool set_random_base_color = true;
    if ( _ini.get_entry( set_random_base_color, "Options" , "SetRandomBaseColor") )
      set_random_base_color_ = set_random_base_color;

    //============================================================================
    // Load the backface culling setting
    //============================================================================
    bool backface_culling = false;
    if ( _ini.get_entry( backface_culling, "Options" , "BackfaceCulling") )
      OpenFlipper::Options::backfaceCulling(backface_culling);

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    //============================================================================
    // Load the WheelZoomFactor setting
    //============================================================================
    double wheelZoomFactor = 1.0;
    if ( _ini.get_entry( wheelZoomFactor, "Options" , "WheelZoomFactor") )
      OpenFlipper::Options::wheelZoomFactor(wheelZoomFactor);

    //============================================================================
    // Load the WheelZoomFactorShift setting
    //============================================================================
    double wheelZoomFactorShift = 0.2;
    if ( _ini.get_entry( wheelZoomFactorShift, "Options" , "WheelZoomFactorShift") )
      OpenFlipper::Options::wheelZoomFactorShift(wheelZoomFactorShift);

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    //============================================================================
    // Load the animation setting
    //============================================================================
    bool animation = false;
    if ( _ini.get_entry( animation, "Options" , "Animation") )
      OpenFlipper::Options::animation(animation);

    //============================================================================
    // Load the stereo mode setting
    //============================================================================
    bool stereo = false;
    if ( _ini.get_entry( stereo, "Options" , "Stereo") )
      OpenFlipper::Options::stereo(stereo);

    //============================================================================
    // Load the setting for the loger window
    //============================================================================
    bool hideLogger = false;
    if ( _ini.get_entry( hideLogger, "Options" , "HideLogger") )
      OpenFlipper::Options::hideLogger(hideLogger);

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    //============================================================================
    // Load the setting for the toolbox window
    //============================================================================
    bool hideToolbox = false;
    if ( _ini.get_entry( hideToolbox, "Options" , "HideToolbox") )
      OpenFlipper::Options::hideToolbox(hideToolbox);

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    //============================================================================
    // Load the setting for the fullscreen option
    //============================================================================
    bool fullScreen = false;
    if ( _ini.get_entry( fullScreen, "Options" , "FullScreen") )
      OpenFlipper::Options::fullScreen(fullScreen);

    //============================================================================
    // Load the setting for the default Toolbox mode
    //============================================================================
    QString toolboxMode = false;
    if ( _ini.get_entry( toolboxMode, "Options" , "DefaultToolboxMode") )
      OpenFlipper::Options::defaultToolboxMode(toolboxMode);

    //============================================================================
    // Load the drawmodes
    //============================================================================
    std::vector< QString > draw_modes;
    if( _ini.get_entry(draw_modes, "Options", "StandardDrawModes") )
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      OpenFlipper::Options::standardDrawMode( ListToDrawMode(draw_modes) );
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    //============================================================================
    // Load logFile status
    //============================================================================
    bool logFileEnabled = true;
    if( _ini.get_entry(logFileEnabled, "Options", "LogFileEnabled") )
      OpenFlipper::Options::logFileEnabled(logFileEnabled);

    //============================================================================
    // Load logFile location
    //============================================================================
    QString logFile = "";
    if( _ini.get_entry(logFile, "Options", "LogFileLocation") )
      OpenFlipper::Options::logFile(logFile);
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    //============================================================================
    // Load restrictFrameRate
    //============================================================================
    bool restrictFrameRate = false;
    if( _ini.get_entry(restrictFrameRate, "Options", "RestrictFrameRate") )
      OpenFlipper::Options::restrictFrameRate(restrictFrameRate);

    //============================================================================
    // Load maxFrameRate
    //============================================================================
    int maxFrameRate = 35;
    if( _ini.get_entry(maxFrameRate, "Options", "MaxFrameRate") )
      OpenFlipper::Options::maxFrameRate(maxFrameRate);
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    //============================================================================
    // Load slotDebugging state
    //============================================================================
    bool doSlotDebugging = false;
    if( _ini.get_entry(doSlotDebugging, "Options", "SlotDebugging") )
      OpenFlipper::Options::doSlotDebugging(doSlotDebugging);

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  }
}

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/** Write the standard options to the given Ini File
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* @param _ini Inifile to use
*/
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void Core::writeApplicationOptions(INIFile& _ini) {
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  // Write maximum recent file count to ini
  _ini.add_entry("Options","MaxRecent",OpenFlipper::Options::maxRecent());

  // Write list of recent files to ini
  QVector< OpenFlipper::Options::RecentFile > recentFiles = OpenFlipper::Options::recentFiles();
  for ( int j = 0 ; j < recentFiles.size(); ++j) {
    // Save filename
    QString key = "recent" + QString::number(j);
    QString filename = recentFiles[j].filename;
    _ini.add_entry( "Options" , key , filename );
    // Save DataType
    key = "type" + QString::number(j);
    int type = recentFiles[j].type;
    _ini.add_entry( "Options" , key , type );
  }

  // save ViewModes
  QVector< QString > entries;
  if ( OpenFlipper::Options::gui() )
    for (int i=0; i < coreWidget_->viewModes_.size(); i++)
      if (coreWidget_->viewModes_[i]->custom){

        //store name
        QString entry = coreWidget_->viewModes_[i]->name;

        //store widgets
        for (int j=0; j < coreWidget_->viewModes_[i]->visibleWidgets.size(); j++)
          entry += " " + coreWidget_->viewModes_[i]->visibleWidgets[j];

        entries.push_back(entry);
      }

  //save viewmodes to ini
  _ini.add_entry("Options","ViewModeCount" ,entries.size());
  for (int i=0; i < entries.size(); i++)
    _ini.add_entry("Options","ViewMode" + QString::number(i) ,entries[i]);

  //============================================================================
  // Splash Screen
  //============================================================================
  _ini.add_entry( "Options" , "Splash" , OpenFlipper::Options::splash() );
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  //write default dataType to INI
  _ini.add_entry( "Options" , "default_DataType" , OpenFlipper::Options::lastDataType() );

  //write default ToolboxMode
  _ini.add_entry("Options","DefaultToolboxMode",OpenFlipper::Options::defaultToolboxMode() );

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  //============================================================================
  // logfile
  //============================================================================
  //write logfile status
  _ini.add_entry("Options","LogFileEnabled",OpenFlipper::Options::logFileEnabled() );
  //write logfile location
  _ini.add_entry("Options","LogFileLocation",OpenFlipper::Options::logFile() );
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  //============================================================================
  // other
  //============================================================================
  // restrict Framerate
  _ini.add_entry("Options","RestrictFrameRate",OpenFlipper::Options::restrictFrameRate() );
  // max Framerate
  _ini.add_entry("Options","MaxFrameRate",OpenFlipper::Options::maxFrameRate() );

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  //============================================================================
  // Debugging
  //============================================================================
  // max Framerate
  _ini.add_entry("Options","SlotDebugging",OpenFlipper::Options::doSlotDebugging() );

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  //============================================================================
  //dontLoad Plugins
  //============================================================================
  QString dontLoad;
  for (int i=0; i < dontLoadPlugins_.size(); i++)
    if (!dontLoad.contains(dontLoadPlugins_[i].trimmed() + ";"))
      dontLoad += dontLoadPlugins_[i].trimmed() + ";";

  if ( !_ini.section_exists("Plugins") )
    _ini.add_section("Plugins");

  //write dontLoad Plugins
  _ini.add_entry("Plugins","DontLoad", dontLoad);



  if ( !_ini.section_exists("Options") )
    _ini.add_section("Options");

  QString dir = OpenFlipper::Options::currentDirStr().toUtf8();
  _ini.add_entry("Options","StartupDir",dir);
  _ini.add_entry("Options","SetRandomBaseColor",set_random_base_color_);

  if ( OpenFlipper::Options::gui() ) {

    _ini.add_entry("Options","BackfaceCulling",coreWidget_->examiner_widget_->backFaceCulling());
    _ini.add_entry("Options","Animation",coreWidget_->examiner_widget_->animation());

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    _ini.add_entry("Options","WheelZoomFactor",coreWidget_->examiner_widget_->wheelZoomFactor());
    _ini.add_entry("Options","WheelZoomFactorShift",coreWidget_->examiner_widget_->wheelZoomFactorShift());

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    //============================================================================
    // Save the current draw modes
    //============================================================================
    std::vector< QString > draw_modes;
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    draw_modes = drawModeToList( OpenFlipper::Options::standardDrawMode() );
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    _ini.add_entry("Options","StandardDrawModes",draw_modes);

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    _ini.add_entry("Options","HideLogger", OpenFlipper::Options::hideLogger() );
    _ini.add_entry("Options","HideToolbox", OpenFlipper::Options::hideToolbox() );
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    // check if we are in fullscreen mode:
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    _ini.add_entry("Options","FullScreen", OpenFlipper::Options::fullScreen() );
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  }

  _ini.add_entry("Options","Stereo",OpenFlipper::Options::stereo() );
}

void Core::openIniFile(QString _filename) {
  INIFile ini;

  if ( ! ini.connect(_filename,false) ) {
    emit log(LOGERR,"Failed to connect to ini file" + _filename);
    return;
  }
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  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( "Loading ini File " + _filename + " ...");
    coreWidget_->setStatus(ApplicationStatus::BLOCKED );
  }

  OpenFlipper::Options::openingIni(true);

  readApplicationOptions(ini);

  QStringList openFiles;

  // Parse File section for files to open
  if ( ini.section_exists("OpenFiles") && ini.get_entry(openFiles,"OpenFiles","open") ) {

    bool newActiveObject = false;

    for ( int i = 0 ; i < openFiles.size(); ++i ) {

      QString sectionName = openFiles[i];

      QString path;
      ini.get_entry( path, sectionName , "path" );

      //check if path is relative
      if (path.startsWith( "." + OpenFlipper::Options::dirSeparator() )){
        //check if _filename contains a path
        if (_filename.section(OpenFlipper::Options::dirSeparator(), 0, -2) != ""){
          path.remove(0,1); // remove .
          path = _filename.section(OpenFlipper::Options::dirSeparator(), 0, -2) + path;
        }
      }

      int tmpType;
      DataType type = DATA_TRIANGLE_MESH;
      if ( ini.get_entry( tmpType, sectionName , "type"  )) {
        type = DataType(tmpType);
      } else
        emit log(LOGWARN, "Unable to get DataType for object " +  sectionName + " assuming Triangle Mesh" );

      int newObjectId = loadObject(type, path);

      BaseObject* object = objectRoot_->childExists( newObjectId );
      if ( object == 0 )  {
        emit log(LOGERR,"Unable to open Object " + path);
        continue;
      }

      bool flag;
      if ( ini.get_entry( flag, sectionName , "target" ) ) {
        object->target(flag);
        newActiveObject = true;
      }

      if ( ini.get_entry( flag, sectionName , "source" ) )
        object->source(flag);

      emit iniLoad( ini,object->id() );
    }

    if ( newActiveObject )
      emit activeObjectChanged();

  }



  emit iniLoadOptions( ini );

  ini.disconnect();

  OpenFlipper::Options::openingIni(false);

  resetScenegraph();
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  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( "Loading ini File " + _filename + " ... Done", 4000);
    coreWidget_->setStatus(ApplicationStatus::READY );
  }

}

void Core::writeIniFile(QString _filename, bool _relativePaths) {
  INIFile ini;

  if ( ! ini.connect(_filename,true) ) {
    emit log(LOGERR,"Failed to connect to _ini file" + _filename);
      return;
  }
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  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( "Saving ini File " + _filename + " ...");
    coreWidget_->setStatus(ApplicationStatus::BLOCKED );
  }

  writeApplicationOptions(ini);

  // This vector will hold the file sections to open
  QStringList openFiles;

  QString keyName;
  QString sectionName;
  for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS) ;
                                        o_it != PluginFunctions::objects_end(); ++o_it) {
    QString file = o_it->path() + OpenFlipper::Options::dirSeparator() + o_it->name();
    if (QFile(file).exists()){
      // Add a section for this object
      sectionName = o_it->name();
      ini.add_section( sectionName );
      openFiles.push_back( sectionName );

      //modify filename if relativePaths are wanted
      if (_relativePaths){
        int prefixLen = _filename.section(OpenFlipper::Options::dirSeparator(),0,-2).length();
        file.remove(0, prefixLen);
        file = "." + file;
      }
      // Add the path of this object to the section
      ini.add_entry( sectionName , "path" , file );
      ini.add_entry( sectionName , "type" , o_it->dataType() );
      ini.add_entry( sectionName , "target" , o_it->target() );
      ini.add_entry( sectionName , "source" , o_it->source() );

    }
  }

  ini.add_entry("OpenFiles","open",openFiles);

  ///@todo :write ini file ( Ask for objects which are not written yet
  std::cerr << "Todo :  write ini file ( Ask for objects which are not written yet )" << std::endl;

  // Tell plugins to save their information for the given object
  for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS) ;
                                        o_it != PluginFunctions::objects_end(); ++o_it)
    emit iniSave(  ini , o_it->id() );

  emit iniSaveOptions( ini );

  ini.disconnect();
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  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( "Saving ini File " + _filename + " ... Done", 4000);
    coreWidget_->setStatus(ApplicationStatus::READY );
  }
}


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