openFunctions.cc

/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  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 with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  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 LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision$                                                         *
 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/





#include "Core.hh"

#include <ACG/QtWidgets/QtFileDialog.hh>

#include "OpenFlipper/common/GlobalOptions.hh"
#include "OpenFlipper/BasePlugin/PluginFunctions.hh"

#include "OpenFlipper/widgets/loadWidget/loadWidget.hh"
#include "OpenFlipper/widgets/addEmptyWidget/addEmptyWidget.hh"

#include <OpenFlipper/common/Types.hh>
#include <ObjectTypes/PolyMesh/PolyMesh.hh>

#include <time.h>

void Core::resetScenegraph( bool _resetTrackBall  ) {
  if ( OpenFlipper::Options::gui() && !OpenFlipper::Options::loadingSettings() ) {

    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i ) {
      // update scene graph (get new bounding box and set projection right, including near and far plane)
      PluginFunctions::viewerProperties(i).lockUpdate();
      coreWidget_->examiner_widgets_[i]->sceneGraph(root_node_scenegraph_, _resetTrackBall );
      PluginFunctions::viewerProperties(i).unLockUpdate();
      coreWidget_->examiner_widgets_[i]->updateGL();
    }

  }

  // Update the draw Modes Menu
  if ( OpenFlipper::Options::gui() )
    coreWidget_->slotUpdateGlobalDrawMenu();
}

//========================================================================================
// ===            Open/Add-Empty Functions                    ============================
//========================================================================================


void Core::slotGetAllFilters ( QStringList& _list){

  for (int i=0; i < (int)supportedTypes_.size(); i++){
    QString f = supportedTypes_[i].plugin->getLoadFilters();
    f = f.section(")",0,0).section("(",1,1).trimmed();
    _list << (QString::number(supportedTypes_[i].plugin->supportedType()) + " " + f);
  }
}

void Core::commandLineOpen(const char* _filename, bool asPolyMesh ){

	QString file(_filename);

	if ( !file.startsWith("/") && !file.contains(":") ) {

		file = QDir::currentPath();
		file += OpenFlipper::Options::dirSeparator();
		file += _filename;
	}

	commandLineFileNames_.push_back(std::pair< std::string , bool >(file.toStdString(), asPolyMesh));
}

void Core::commandLineScript(const char* _filename ) {
  commandLineScriptNames_.push_back(_filename);
}

void Core::slotExecuteAfterStartup() {

  //check if we have scripting support:
  bool scriptingSupport = false;
  slotPluginExists("scripting",scriptingSupport);
  if ( ! scriptingSupport ) {
    emit log(LOGERR ,tr("No scripting support available, please check if we load a scripting plugin .. Skipping script execution on startup"));
  }

  // Collect all script files from the scripting subdirectory and execute them if possible
  if ( scriptingSupport ) {

    QDir scriptDir = OpenFlipper::Options::scriptDir();
    QStringList scriptFiles = scriptDir.entryList(QDir::Files,QDir::Name);

    for ( int i = 0 ; i  < scriptFiles.size(); ++i )
      if ( scriptFiles[i].endsWith("ofs") )
        emit executeFileScript(scriptDir.path() + QDir::separator() + scriptFiles[i]);

  }

  for ( uint i = 0 ; i < commandLineFileNames_.size() ; ++i ) {

    // Skip scripts here as they will be handled by a different function
    QString tmp = QString::fromStdString(commandLineFileNames_[i].first);
    if ( tmp.endsWith("ofs") ) {
      commandLineScriptNames_.push_back(commandLineFileNames_[i].first);
      continue;
    }

    if (commandLineFileNames_[i].second)
      loadObject(DATA_POLY_MESH, QString::fromStdString(commandLineFileNames_[i].first));
    else {
      loadObject(QString::fromStdString(commandLineFileNames_[i].first));
    }
  }

  if ( scriptingSupport )
    for ( uint i = 0 ; i < commandLineScriptNames_.size() ; ++i ) {
      // Add the full path to the script to set scripting dir right
      QString tmp = QString::fromStdString(commandLineScriptNames_[i]);
      tmp = QDir::currentPath() + QDir::separator() + tmp;
      emit executeFileScript(tmp);
    }

  if ( !OpenFlipper::Options::gui() && !OpenFlipper::Options::remoteControl())
    exitApplication();
}

/// Load object by guessing DataType depending on the files extension
int Core::loadObject ( QString _filename ) {

  if (_filename.endsWith(".ini")) {

    // Load all information from the given ini file
    openIniFile(_filename,true,true,true);

    if ( OpenFlipper::Options::gui() )
      coreWidget_->addRecent(_filename, DATA_UNKNOWN);

    return -2;
  } else
  if (_filename.endsWith(".ofs")) {
     emit log(LOGINFO ,tr("Starting script execution of %1.").arg( _filename)) ;
     emit executeFileScript(_filename);
  } else
    return loadObject( DATA_TRIANGLE_MESH, _filename);

  return -1;
}

/// Function for loading a given file
int Core::loadObject( DataType _type, QString _filename) {

  if (_type == DATA_UNKNOWN)
    return loadObject(_filename);

  for (int i=0; i < (int)supportedTypes_.size(); i++)
    if (supportedTypes_[i].type == _type) {


      if ( OpenFlipper::Options::gui() ) {
        coreWidget_->statusMessage( tr("Loading %1 ... ").arg(_filename));
        if ( !OpenFlipper::Options::loadingSettings() )
          coreWidget_->setStatus(ApplicationStatus::PROCESSING );
      }

      //load file
      int id = supportedTypes_[i].plugin->loadObject(_filename);

      if ( OpenFlipper::Options::gui() ) {
        if ( id != -1 )
          coreWidget_->statusMessage( tr("Loading %1 ... done").arg(_filename), 4000 );
        else
          coreWidget_->statusMessage( tr("Loading %1 ... failed!").arg(_filename), 4000 );

        if ( !OpenFlipper::Options::loadingSettings() )
          coreWidget_->setStatus(ApplicationStatus::READY );
      }

      return id;
    }
  return -1; //no plugin found
}

/// Function for adding an empty object of given DataType
int Core::addEmptyObject( DataType _type ) {
  for (int i=0; i < (int)supportedTypes_.size(); i++)
    if (supportedTypes_[i].type == _type)
      return supportedTypes_[i].plugin->addEmpty();
  return -1; //no plugin found
}

//========================================================================================
// ===             Open/Add-Empty Slots                       ============================
//========================================================================================

/// Slot for adding an empty object of given DataType
void Core::slotAddEmptyObject( DataType _type , int& _id ) {
  _id = addEmptyObject( _type );
}

/// Slot creating a copy of an existing object
void Core::slotCopyObject( int _oldId , int& _newId ) {

  if ( _oldId == -1 ) {
    emit log(LOGERR,tr("Requested copy for illegal Object id: %1").arg(_oldId) );
    _newId = -1;
    return;
  }

  // get the node
  BaseObject* object = objectRoot_->childExists(_oldId);

  if ( !object ) {
    emit log(LOGERR,tr("Requested copy for unknown Object id: %1 ").arg(_oldId) );
    _newId = -1;
    return ;
  }

  // Copy the item
  BaseObject* copy = object->copy();

  if ( copy == 0 ) {
    emit log(LOGERR,tr("Unable to create a copy of the object."));
    return;
  }

  // Integrate into object tree
  copy->setParent( object->parent() );
  if ( object->parent() )
    object->parent()->appendChild(copy);
  else
    std::cerr << "Unable to add copy to object list" << std::endl;

  // return the new id
  _newId = copy->id();

  // tell plugins that a new object has been created
  slotEmptyObjectAdded(_newId);

  // tell plugins that the object has been updated
  slotObjectUpdated(_newId);

}

/// Function for loading a given file
void Core::slotLoad(QString _filename, int _pluginID) {

  if ( OpenFlipper::Options::gui() ) {
    coreWidget_->statusMessage( tr("Loading %1 ... ").arg(_filename));
    if ( !OpenFlipper::Options::loadingSettings() )
      coreWidget_->setStatus(ApplicationStatus::PROCESSING );
  }

  //load file
  int id = supportedTypes_[_pluginID].plugin->loadObject(_filename);

  if ( OpenFlipper::Options::gui() ) {
    if ( id != -1 )
      coreWidget_->statusMessage( tr("Loading %1 ... done").arg(_filename), 4000 );
    else
      coreWidget_->statusMessage( tr("Loading %1 ... failed!").arg(_filename), 4000 );

    if ( !OpenFlipper::Options::loadingSettings() )
      coreWidget_->setStatus(ApplicationStatus::READY );
  }

  BaseObjectData* object;
  PluginFunctions::getObject(id,object);

  DataType type = object->dataType();
  
  // Check if it is a polymesh
  if ( object != 0 && type == DATA_POLY_MESH ) {

    PolyMeshObject* poly = 0;
    PluginFunctions::getObject(id,poly);

    if ( poly != 0 ) {
        PolyMesh& mesh = *poly->mesh();

        bool isTriangleMesh = true;

        for ( PolyMesh::FaceIter f_it = mesh.faces_begin(); f_it != mesh.faces_end() ; ++f_it) {

          // Count number of vertices for the current face
          uint count = 0;
          for ( PolyMesh::FaceVertexIter fv_it( mesh,f_it); fv_it; ++fv_it )
            ++count;

          // Check if it is a triangle. If not, this is really a poly mesh
          if ( count != 3 ) {
            isTriangleMesh = false;
            break;
          }

        }

        // Mesh loaded as polymesh is actually a triangle mesh. Ask the user to reload as triangle mesh or keep it as poly mesh.
        if ( isTriangleMesh ) {
          QMessageBox::StandardButton result = QMessageBox::question ( 0,
                                                                      tr("TriMesh loaded as PolyMesh"),
                                                                      tr("You opened the mesh as a poly mesh but actually its a triangle mesh. \nShould it be opened as a triangle mesh?"),
                                                                      (QMessageBox::Yes | QMessageBox::No ),
                                                                      QMessageBox::Yes );
          // User decided to reload as triangle mesh
          if ( result == QMessageBox::Yes ) {
            slotDeleteObject(id);
            id = loadObject(DATA_TRIANGLE_MESH ,_filename);
            type = DATA_TRIANGLE_MESH;
          }
        }

    }
  }
  if ( id >= 0 )
    if ( OpenFlipper::Options::gui() )
      coreWidget_->addRecent(_filename, type);
}

/// Slot for loading a given file
void Core::slotLoad(QString _filename, DataType _type, int& _id) {
  _id = loadObject(_type,_filename);

  // Check if it is a polymesh
  if ( _type == DATA_POLY_MESH ) {

    PolyMeshObject* poly = 0;
    PluginFunctions::getObject(_id,poly);

    if ( poly != 0 ) {
        PolyMesh& mesh = *poly->mesh();

        bool isTriangleMesh = true;

        for ( PolyMesh::FaceIter f_it = mesh.faces_begin(); f_it != mesh.faces_end() ; ++f_it) {

          // Count number of vertices for the current face
          uint count = 0;
          for ( PolyMesh::FaceVertexIter fv_it( mesh,f_it); fv_it; ++fv_it )
            ++count;

          // Check if it is a triangle. If not, this is really a poly mesh
          if ( count != 3 ) {
            isTriangleMesh = false;
            break;
          }

        }

        // Mesh loaded as polymesh is actually a triangle mesh. Ask the user to reload as triangle mesh or keep it as poly mesh.
        if ( isTriangleMesh ) {
          QMessageBox::StandardButton result = QMessageBox::question ( 0,
                                                                      tr("TriMesh loaded as PolyMesh"),
                                                                      tr("You opened the mesh as a poly mesh but actually its a triangle mesh. \nShould it be opened as a triangle mesh?"),
                                                                      (QMessageBox::Yes | QMessageBox::No ),
                                                                      QMessageBox::Yes );
          // User decided to reload as triangle mesh
          if ( result == QMessageBox::Yes ) {
            slotDeleteObject(_id);
            _id = loadObject(DATA_TRIANGLE_MESH ,_filename);
            _type = DATA_TRIANGLE_MESH;
          }
        }

    }
  }
  if ( _id < 0 )
    _id = -1;
  else
    if ( OpenFlipper::Options::gui() )
      coreWidget_->addRecent(_filename,_type);
}

/// Slot gets called after a file-plugin has opened an object
void Core::slotObjectOpened ( int _id ) {
  if ( OpenFlipper::Options::doSlotDebugging() ) {
    if ( sender() != 0 ) {
      if ( sender()->metaObject() != 0 ) {
        emit log(LOGINFO,tr("slotObjectOpened( ") + QString::number(_id) + tr(" ) called by ") +
                  QString( sender()->metaObject()->className() ) );
      }
    } else {
      emit log(LOGINFO,tr("slotObjectOpened( ") + QString::number(_id) + tr(" ) called by Core") );
    }
  }

  // get the opened object
  BaseObjectData* object;
  PluginFunctions::getObject(_id,object);

  QColor color;

  if ( OpenFlipper::Options::randomBaseColor() ){
      //init random seed
      srand ( time(NULL) );

      QColor bckgrnd = OpenFlipper::Options::defaultBackgroundColor();
      int diff;

      do{
        color.setRgb(rand()%255, rand()%255, rand()%255);

        diff = (bckgrnd.red()   - color.red())  *(bckgrnd.red()   - color.red())
              +(bckgrnd.green() - color.green())*(bckgrnd.green() - color.green())
              +(bckgrnd.blue()  - color.blue()) *(bckgrnd.blue()  - color.blue());
      }while (diff < 70000);
  }
  else{
      color = OpenFlipper::Options::defaultBaseColor();
  }

  ACG::Vec4f colorV;
  colorV[0] = color.redF();
  colorV[1] = color.greenF();
  colorV[2] = color.blueF();
  colorV[3] = color.alphaF();

  object->setBaseColor( colorV );

  // ================================================================================
  // Set defaults for DrawMode, ViewingDirection and Projection if this is the first opened object
  // If a plugin changes the drawmode later, this setting will be overridden!
  // ================================================================================
  if ( PluginFunctions::objectCount() == 1 && OpenFlipper::Options::gui() && !OpenFlipper::Options::loadingSettings() )
    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i ){
      PluginFunctions::viewerProperties(i).drawMode( OpenFlipper::Options::defaultDrawMode(i) );

      if ( OpenFlipper::Options::defaultProjectionMode(i) == 0 )
	PluginFunctions::orthographicProjection(i);
      else
	PluginFunctions::perspectiveProjection(i);

      PluginFunctions::setFixedView(OpenFlipper::Options::defaultViewingDirection(i), i );
    }

  // ================================================================================
  // Recompute bounding box and scenegraph info
  // Reset scene center here to include new object
  // ================================================================================
  resetScenegraph(true);

  // ================================================================================
  // Tell plugins, that a file has been opened
  // ================================================================================
  emit openedFile( _id );

  // ================================================================================
  // Tell plugins, that the Object is updated and the active object has changed
  // ================================================================================
  emit signalObjectUpdated(_id);
  emit objectSelectionChanged( _id );

  // ================================================================================
  // Create initial backup
  // ================================================================================
  backupRequest(_id,"Original Object");

  // ================================================================================
  // Add the file to the recent files menu
  // ================================================================================
  QString filename = object->path() + OpenFlipper::Options::dirSeparator() + object->name();
  BaseObject* object2;
  PluginFunctions::getObject(_id,object2);
  if ( OpenFlipper::Options::gui() )
    coreWidget_->addRecent( filename, object2->dataType() );

  // ================================================================================
  // if this is the first object opend, reset the global view
  // ================================================================================
  if ( PluginFunctions::objectCount() == 1 && OpenFlipper::Options::gui() && !OpenFlipper::Options::loadingSettings() )
    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i ) {
      coreWidget_->examiner_widgets_[i]->viewAll();
    }

  // objectRoot_->dumpTree();
}

 /// Slot gets called after a file-plugin has opened an object
void Core::slotEmptyObjectAdded ( int _id ) {
  if ( OpenFlipper::Options::doSlotDebugging() ) {
    if ( sender() != 0 ) {
      if ( sender()->metaObject() != 0 ) {
        emit log(LOGINFO,tr("slotEmptyObjectAdded( ") + QString::number(_id) + tr(" ) called by ") +
                  QString( sender()->metaObject()->className() ) );
      }
    } else {
      emit log(LOGINFO,tr("slotEmptyObjectAdded( ") + QString::number(_id) + tr(" ) called by Core") );
    }
  }

  // get the opened object
  BaseObjectData* object;
  PluginFunctions::getObject(_id,object);

  emit emptyObjectAdded( _id );

  // Tell the Plugins that the Object List and the active object have changed
  emit signalObjectUpdated(_id);
  emit objectSelectionChanged(_id);

  backupRequest(_id,"Original Object");

  ///@todo : set a default path for new objects
//    QString filename = object->path() + OpenFlipper::Options::dirSeparator() + object->name();

//    addRecent(filename);
}

//========================================================================================
// ===             Menu Slots                                 ============================
//========================================================================================

/// Opens AddEmpty-Object widget
void Core::slotAddEmptyObjectMenu() {
  if (supportedTypes_.size() != 0){
    static addEmptyWidget* widget = 0;
    if ( !widget ){
      std::vector< DataType > types;
      QStringList typeNames;
      for (int i=0; i < (int)supportedTypes_.size(); i++) {
        types.push_back(supportedTypes_[i].type);
        typeNames.push_back(supportedTypes_[i].plugin->typeName());
      }
      widget = new addEmptyWidget(types,typeNames);
      widget->setWindowIcon( OpenFlipper::Options::OpenFlipperIcon() );
      connect(widget,SIGNAL(chosen(DataType, int&)),this,SLOT(slotAddEmptyObject(DataType, int&)));
    }
    widget->show();
  }else
    emit log(LOGERR,tr("Could not show 'add Empty' dialog. Missing file-plugins."));
}

//========================================================================================
// ===             Public Slots                                 ============================
//========================================================================================

/// Open Load-Object Widget
void Core::loadObject() {

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

    if (supportedTypes_.size() != 0){
      LoadWidget* widget = new LoadWidget(supportedTypes_);
      connect(widget,SIGNAL(load(QString, int)),this,SLOT(slotLoad(QString, int)));
      connect(widget,SIGNAL(save(int, QString, int)),this,SLOT(saveObject(int, QString, int)));

      widget->setWindowIcon( OpenFlipper::Options::OpenFlipperIcon() );

      widget->showLoad();

      widget->disconnect();
      delete widget;

    }else
      emit log(LOGERR,tr("Could not show 'load objects' dialog. Missing file-plugins."));

  }
}

/// Load settings from file
void Core::loadSettings(){

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

    QString complete_name;


    QFileDialog fileDialog( coreWidget_,
                            tr("Load Settings"),
                            OpenFlipper::Options::currentDirStr(),
                            tr("INI files (*.ini);;OBJ files (*.obj )") );

    fileDialog.setOption (QFileDialog::DontUseNativeDialog, true);
    fileDialog.setAcceptMode ( QFileDialog::AcceptOpen );
    fileDialog.setFileMode ( QFileDialog::AnyFile );

    QGridLayout *layout = (QGridLayout*)fileDialog.layout();

    QGroupBox* optionsBox = new QGroupBox( &fileDialog ) ;
    optionsBox->setSizePolicy( QSizePolicy ( QSizePolicy::Expanding , QSizePolicy::Preferred ) );
    optionsBox->setTitle(tr("Options"));
    layout->addWidget( optionsBox, layout->rowCount() , 0 , 1,layout->columnCount() );

    QCheckBox *loadProgramSettings = new QCheckBox(optionsBox);
    loadProgramSettings->setText(tr("Load program settings"));
    loadProgramSettings->setToolTip(tr("Load all current program settings from the file ( This will include view settings, colors,...) "));
    loadProgramSettings->setCheckState( Qt::Unchecked );

    QCheckBox *loadPluginSettings = new QCheckBox(optionsBox);
    loadPluginSettings->setText(tr("Load per Plugin Settings"));
    loadPluginSettings->setToolTip(tr("Plugins should load their current global settings from the file"));
    loadPluginSettings->setCheckState( Qt::Checked );

    QCheckBox *loadObjectInfo = new QCheckBox(optionsBox);
    loadObjectInfo->setText(tr("Load all objects defined in the file"));
    loadObjectInfo->setToolTip(tr("Load all objects which are defined in the file"));
    loadObjectInfo->setCheckState( Qt::Checked );

    QBoxLayout* frameLayout = new QBoxLayout(QBoxLayout::TopToBottom,optionsBox);
    frameLayout->addWidget( loadProgramSettings , 0 , 0);
    frameLayout->addWidget( loadPluginSettings  , 1 , 0);
    frameLayout->addWidget( loadObjectInfo      , 2 , 0);
    frameLayout->addStretch();

    fileDialog.resize(550 ,500);

    // ========================================================================================
    // show the saveSettings-Dialog and get the target file
    // ========================================================================================
    QStringList fileNames;
    if (fileDialog.exec()) {
      fileNames = fileDialog.selectedFiles();
    } else {
      return;
    }

    if ( fileNames.size() > 1 ) {
      std::cerr << "Too many save filenames selected" << std::endl;
      return;
    }

    complete_name = fileNames[0];


    QString newpath = complete_name.section(OpenFlipper::Options::dirSeparator(),0,-2);
    OpenFlipper::Options::currentDir(newpath);

    if ( complete_name.endsWith("ini") ) {
      openIniFile( complete_name,
                   loadProgramSettings->isChecked(),
                   loadPluginSettings->isChecked(),
                   loadObjectInfo->isChecked());
      if ( loadProgramSettings->isChecked() )
        applyOptions();
    } else if ( complete_name.endsWith("obj") ) {
      openObjFile(complete_name);
      if ( loadProgramSettings->isChecked() )
        applyOptions();
    }

    coreWidget_->addRecent(complete_name, DATA_UNKNOWN);
  }
}

/// Load settings from file
void Core::loadSettings(QString _filename){

  if ( !QFile(_filename).exists() )
    return;

  QString newpath = _filename.section(OpenFlipper::Options::dirSeparator(),0,-2);
  OpenFlipper::Options::currentDir(newpath);

  if ( _filename.endsWith("ini") ) {
    // Loaded function for recent files. Load everything.
    openIniFile(_filename,true,true,true);
    applyOptions();
  } else if ( _filename.endsWith("obj") ) {
    openObjFile(_filename);
    applyOptions();
  }

}