viewerControl.cc 37.1 KB
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/*===========================================================================*\
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*                                                                            *
*                              OpenFlipper                                   *
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*      Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen       *
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*                           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/>.                                       *
*                                                                            *
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\*===========================================================================*/

/*===========================================================================*\
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*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
*                                                                            *
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\*===========================================================================*/
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//=============================================================================
//
//  CLASS CoreWidget - IMPLEMENTATION
//
//=============================================================================


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

#include "CoreWidget.hh"

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#if QT_VERSION > 0x050000
#include <QtConcurrent>
#else
#include <QtCore>
#endif

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#include <ACG/Scenegraph/CoordsysNode.hh>
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#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
#include <OpenFlipper/common/GlobalOptions.hh>
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#include <OpenFlipper/widgets/snapshotDialog/SnapshotDialog.hh>
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//== IMPLEMENTATION ==========================================================

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

void CoreWidget::slotToggleStereoMode()
{
  stereoActive_ = !stereoActive_;

  if ( stereoActive_ ) {
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    statusBar_->showMessage(tr("Stereo enabled"));
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    stereoButton_->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"stereo.png") );
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  } else {
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    statusBar_->showMessage(tr("Stereo disabled"));
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    stereoButton_->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"mono.png") );
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  }

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  cursorPainter_->setEnabled (stereoActive_);
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  for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
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    examiner_widgets_[i]->properties()->stereo(stereoActive_);
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}

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void CoreWidget::slotSetGlobalBackgroundColor() {
  ACG::Vec4f bc = PluginFunctions::viewerProperties().backgroundColor() * 255.0;

  QColor backCol((int)bc[0], (int)bc[1], (int)bc[2], (int)bc[3]);
  QColor c = QColorDialog::getColor(backCol,this);

  if (c != backCol && c.isValid())
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    for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets(); ++i )
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      PluginFunctions::viewerProperties(i).backgroundColor(ACG::Vec4f(((double) c.redF())   ,
                                                                      ((double) c.greenF()) ,
                                                                      ((double) c.blueF())  ,
                                                                        1.0));

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  OpenFlipperSettings().setValue("Core/Gui/glViewer/defaultBackgroundColor",c);
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}

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void CoreWidget::slotSetContextBackgroundColor() {
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  ACG::Vec4f bc = PluginFunctions::viewerProperties().backgroundColor() * 255.0;

  QColor backCol((int)bc[0], (int)bc[1], (int)bc[2], (int)bc[3]);
  QColor c = QColorDialog::getColor(backCol,this);

  if (c != backCol && c.isValid())
    PluginFunctions::viewerProperties().backgroundColor(ACG::Vec4f(((double) c.redF())   ,
                                                                    ((double) c.greenF()) ,
                                                                    ((double) c.blueF())  ,
                                                                     1.0));
}


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/// Set the viewer to home position
void CoreWidget::slotContextHomeView() {
  examiner_widgets_[PluginFunctions::activeExaminer()]->home();
}

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/// Show / hide wheels in examiner windows
void CoreWidget::slotSwitchWheels(bool _state) {
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  std::vector< glViewer* >::iterator it = examiner_widgets_.begin();
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  for(; it != examiner_widgets_.end(); ++it)
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    _state ? (*it)->slotShowWheels() : (*it)->slotHideWheels();
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}
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/// Switch navigation mode
void CoreWidget::slotSwitchNavigation(bool _egomode) {
  std::vector< glViewer* >::iterator it = examiner_widgets_.begin();

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  for(; it != examiner_widgets_.end(); ++it) {
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    _egomode ? (*it)->navigationMode(glViewer::FIRSTPERSON_NAVIGATION) :
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    	(*it)->navigationMode(glViewer::NORMAL_NAVIGATION);
  }
}

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/// Set the viewer to home position
void CoreWidget::slotGlobalHomeView() {
  for ( int i = 0 ; i < PluginFunctions::viewers() ; ++i )
    examiner_widgets_[i]->home();
}

/// Set the viewers home position
void CoreWidget::slotContextSetHomeView() {
  examiner_widgets_[PluginFunctions::activeExaminer()]->setHome();
}


/// Set the home position for all viewers
void CoreWidget::slotGlobalSetHomeView() {
  for ( int i = 0 ; i < PluginFunctions::viewers() ; ++i )
    examiner_widgets_[i]->setHome();
}

/// Change view on active viewer to view complete scene
void CoreWidget::slotContextViewAll() {
  examiner_widgets_[PluginFunctions::activeExaminer()]->viewAll();
}


/// Change view on all viewers to view complete scene
void CoreWidget::slotGlobalViewAll() {
  for ( int i = 0 ; i < PluginFunctions::viewers() ; ++i )
    examiner_widgets_[i]->viewAll();
}

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/// Toggle projection mode of the active viewer
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void CoreWidget::slotContextSwitchProjection() {
  examiner_widgets_[PluginFunctions::activeExaminer()]->toggleProjectionMode();
}

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/// Toggle coordsys projection mode of the active viewer
ACG::SceneGraph::CoordsysNode::ProjectionMode CoreWidget::getCoordsysProjection() {  
    // Find coordsys node
    ACG::SceneGraph::BaseNode* node = 0;
    node = PluginFunctions::getSceneGraphRootNode()->find("Core Coordsys Node");
    if (node != 0) {
	return dynamic_cast<ACG::SceneGraph::CoordsysNode*> (node)->getProjectionMode();
    } else {
        emit statusMessage(QString(tr("getCoordsysProjection(): Could not find coordsys node. Assuming default orthographic projection.")));
	return ACG::SceneGraph::CoordsysNode::ORTHOGRAPHIC_PROJECTION;
    }
}

/// Toggle coordsys projection mode of the active viewer
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void CoreWidget::slotContextSwitchCoordsysProjection() {
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    // Find coordsys node
    ACG::SceneGraph::BaseNode* node = 0;
    node = PluginFunctions::getSceneGraphRootNode()->find("Core Coordsys Node");
    if (node != 0) {
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        ACG::SceneGraph::CoordsysNode* cnode = dynamic_cast<ACG::SceneGraph::CoordsysNode*> (node);
        if (cnode->getProjectionMode() == ACG::SceneGraph::CoordsysNode::PERSPECTIVE_PROJECTION) {
            cnode->setProjectionMode(ACG::SceneGraph::CoordsysNode::ORTHOGRAPHIC_PROJECTION);
        }
        else {
            cnode->setProjectionMode(ACG::SceneGraph::CoordsysNode::PERSPECTIVE_PROJECTION);
        }
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    } else {
        emit statusMessage(QString(tr("slotContextSwitchCoordsysProjection(): Could not find coordsys node, thus its projection mode will not be toggled.")));
    }
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    for ( unsigned int i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
        examiner_widgets_[i]->updateGL();
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}

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/// Toggle projection mode of all viewers to perspective projection
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void CoreWidget::slotGlobalPerspectiveProjection() {
  for ( int i = 0 ; i < PluginFunctions::viewers() ; ++i )
    examiner_widgets_[i]->perspectiveProjection();
}

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/// Toggle projection mode of all viewers to orthogonal projection
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void CoreWidget::slotGlobalOrthographicProjection() {
  for ( int i = 0 ; i < PluginFunctions::viewers() ; ++i )
    examiner_widgets_[i]->orthographicProjection();
}

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/// If animation is disabled in all viewers, enable it in all viewers. Otherwise disable it.
void CoreWidget::slotGlobalToggleAnimation() {
  int enabledCount  = 0;

  for ( int i = 0 ; i< PluginFunctions::viewers(); ++i ) {
    if ( PluginFunctions::viewerProperties(i).animation() )
      enabledCount++;
  }
  
  slotGlobalChangeAnimation (enabledCount == 0);
}

/// Set the animation mode for all viewers
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void CoreWidget::slotGlobalChangeAnimation(bool _animation){
  for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
    PluginFunctions::viewerProperties(i).animation(_animation);
}

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/// Set the animation mode for active viewer
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void CoreWidget::slotLocalChangeAnimation(bool _animation){
  PluginFunctions::viewerProperties().animation(_animation);
}

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/// If backface culling is disabled in all viewers, enable it in all viewers. Otherwise disable it.
void CoreWidget::slotGlobalToggleBackFaceCulling() {
  int enabledCount  = 0;

  for ( int i = 0 ; i< PluginFunctions::viewers(); ++i ) {
    if ( PluginFunctions::viewerProperties(i).backFaceCulling() )
      enabledCount++;
  }
  
  slotGlobalChangeBackFaceCulling (enabledCount == 0);
}

/// Set backface culling for all viewers
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void CoreWidget::slotGlobalChangeBackFaceCulling(bool _backFaceCulling){
  for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
    PluginFunctions::viewerProperties(i).backFaceCulling(_backFaceCulling);
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}

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/// Set backface culling for active viewer
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void CoreWidget::slotLocalChangeBackFaceCulling(bool _backFaceCulling){
  PluginFunctions::viewerProperties().backFaceCulling(_backFaceCulling);
}


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/// If two-sided lighting is disabled in all viewers, enable it in all viewers. Otherwise disable it.
void CoreWidget::slotGlobalToggleTwoSidedLighting() {
  int enabledCount  = 0;

  for ( int i = 0 ; i< PluginFunctions::viewers(); ++i ) {
    if ( PluginFunctions::viewerProperties(i).twoSidedLighting() )
      enabledCount++;
  }
  
  slotGlobalChangeTwoSidedLighting (enabledCount == 0);
}

/// Set two-sided lighting for all viewers
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void CoreWidget::slotGlobalChangeTwoSidedLighting(bool _lighting) {
  for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
    PluginFunctions::viewerProperties(i).twoSidedLighting(_lighting);
}

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/// Set two-sided lighting for active viewer
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void CoreWidget::slotLocalChangeTwoSidedLighting(bool _lighting) {
  PluginFunctions::viewerProperties().twoSidedLighting(_lighting);
}

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/// If multisampling is disabled in all viewers, enable it in all viewers. Otherwise disable it.
void CoreWidget::slotGlobalToggleMultisampling() {
  int enabledCount  = 0;

  for ( int i = 0 ; i< PluginFunctions::viewers(); ++i ) {
    if ( PluginFunctions::viewerProperties(i).multisampling() )
      enabledCount++;
  }
  
  slotGlobalChangeMultisampling (enabledCount == 0);
}

/// Set multisampling for all viewers
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void CoreWidget::slotGlobalChangeMultisampling(bool _multisampling) {
  for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
    PluginFunctions::viewerProperties(i).multisampling( _multisampling );
}

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/// Set multisampling for active viewer
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void CoreWidget::slotLocalChangeMultisampling(bool _multisampling) {
  PluginFunctions::viewerProperties().multisampling( _multisampling );
}

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/// If mipmapping is disabled in all viewers, enable it in all viewers. Otherwise disable it.
void CoreWidget::slotGlobalToggleMipmapping() {
  int enabledCount  = 0;

  for ( int i = 0 ; i< PluginFunctions::viewers(); ++i ) {
    if ( PluginFunctions::viewerProperties(i).mipmapping() )
      enabledCount++;
  }
  
  slotGlobalChangeMipmapping (enabledCount == 0);
}

/// Set mipmapping for all viewers
void CoreWidget::slotGlobalChangeMipmapping(bool _mipmapping) {
  for ( uint i = 0 ; i < OpenFlipper::Options::examinerWidgets() ; ++i )
    PluginFunctions::viewerProperties(i).mipmapping( _mipmapping );
}

/// Set mipmapping for active viewer
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void CoreWidget::slotLocalChangeMipmapping(bool _mipmapping) {
  PluginFunctions::viewerProperties().mipmapping( _mipmapping );
}

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/// Take a snapshot of the current Viewer
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void CoreWidget::slotExaminerSnapshot() {
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  QFileInfo fi(PluginFunctions::viewerProperties().snapshotName());
  int counter = PluginFunctions::viewerProperties().snapshotCounter();

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    // Add leading zeros
  QString number = QString::number(counter);
  while ( number.size() < 7 )
    number = "0" + number;

  QString suggest = fi.baseName() + "." + number + ".";
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  QString format="png";

  if (fi.completeSuffix() == "ppm")
    format="ppmraw";

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  if (fi.completeSuffix() == "jpg")
    format="jpg";

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  suggest += format;

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  QFileDialog dialog(this);
  dialog.setFileMode(QFileDialog::AnyFile);
  dialog.setDefaultSuffix("png");
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  dialog.setNameFilter(tr("Images (*.png *.ppm *.jpg)"));
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  dialog.setFileMode(QFileDialog::AnyFile);
  dialog.setConfirmOverwrite(true);
  dialog.setDirectory( fi.path() );
  dialog.selectFile( suggest );
  dialog.setAcceptMode(QFileDialog::AcceptSave);
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  dialog.setWindowTitle(tr("Save Snapshot"));
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 if (dialog.exec()){
     QString newName = dialog.selectedFiles()[0];

      if (newName != fi.path() + OpenFlipper::Options::dirSeparator() + suggest)
        PluginFunctions::viewerProperties().snapshotBaseFileName(newName);
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      QImage image;
      examiner_widgets_[PluginFunctions::activeExaminer()]->snapshot(image);
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      image.save(newName);
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  }
}

///Take a snapshot of the whole application
void CoreWidget::applicationSnapshotDialog() {

  QFileInfo fi(snapshotName_);
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  if (snapshotName_ == "")
    fi.setFile( OpenFlipperSettings().value("Core/CurrentDir").toString() + QDir::separator() + "snap.png" );
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  // Add leading zeros
  QString number = QString::number(snapshotCounter_);
  while ( number.size() < 7 )
    number = "0" + number;

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  QString suggest = fi.path() + QDir::separator() + fi.baseName() + "." + number + ".";
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  QString format="png";

  if (fi.completeSuffix() == "ppm")
    format="ppmraw";

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  if (fi.completeSuffix() == "jpg")
    format="jpg";

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  suggest += format;

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  int w = width();
  int h = height();

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  SnapshotDialog dialog(suggest, false, w, h, 0);
  
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  connect(&dialog, SIGNAL(resizeApplication(int,int)), this, SIGNAL(resizeApplication(int,int)) );

  bool ok = dialog.exec();
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  if ( ok ){
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    QString newName = dialog.filename->text();
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    if (newName != suggest){
      
      OpenFlipperSettings().setValue("Core/CurrentDir", QFileInfo(newName).absolutePath() );
      
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      snapshotName_ = newName;
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      snapshotCounter_ = 1;
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    }else
      snapshotCounter_++;

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    //grabs only the widget (espacially in windows)
    //todo: deprecated in QT 5.0, use QScreen instead
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    QPixmap pic = QPixmap::grabWindow( winId() );

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    QPainter painter (&pic);

    //so we have to add the content from the GLContext manually
    for (std::vector< glViewer* >::iterator iter = examiner_widgets_.begin(); iter != examiner_widgets_.end(); ++iter)
    {
      if (*iter)
      {
        QImage fillImage;

        (*iter)->snapshot(fillImage, (*iter)->glWidth() , (*iter)->glHeight());

        QPoint localPos = QPoint((*iter)->pos().x(),(*iter)->pos().y());
        QPointF pos = glView_->mapTo(this,localPos);
        painter.drawImage(pos,fillImage);
      }
    }

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    pic.save(newName);
  }
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  emit resizeApplication(w,h);
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}

///Take a snapshot of the whole application
void CoreWidget::applicationSnapshot() {

  QFileInfo fi(snapshotName_);

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  // Add leading zeros
  QString number = QString::number(snapshotCounter_++);
  while ( number.size() < 7 )
    number = "0" + number;

  QString suggest = fi.path() + QDir::separator() +fi.baseName() + "." + number + ".";
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  QString format="png";

  if (fi.completeSuffix() == "ppm")
    format="ppmraw";

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  if (fi.completeSuffix() == "jpg")
    format="jpg";

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  suggest += format;

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  // Write image asynchronously
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  QImage* pic = new QImage(QPixmap::grabWindow( winId() ).toImage());
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  writeImageAsynchronously(pic, suggest);
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}

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///Take a snapshot of all viewers
void CoreWidget::viewerSnapshotDialog() {

  QFileInfo fi(snapshotName_);
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  if (snapshotName_ == "")
    fi.setFile( OpenFlipperSettings().value("Core/CurrentDir").toString() + QDir::separator() + "snap.png" );
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  // Add leading zeros
  QString number = QString::number(snapshotCounter_);
  while ( number.size() < 7 )
    number = "0" + number;

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  QString suggest = fi.path() + QDir::separator() + fi.baseName() + "." + number + ".";
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  QString format="png";

  if (fi.completeSuffix() == "ppm")
    format="ppmraw";

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  if (fi.completeSuffix() == "jpg")
    format="jpg";

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  suggest += format;

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  int w = glView_->width();
  int h = glView_->height();
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  SnapshotDialog dialog(suggest, true, w, h, 0);
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  if (!ACG::SceneGraph::Material::support_json_serialization())
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      dialog.metaData_storeMatInfo_cb->setVisible(false);

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  bool ok = dialog.exec();

  if (ok){
    QString newName = dialog.filename->text();
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    if (newName != suggest){
      
      OpenFlipperSettings().setValue("Core/CurrentDir", QFileInfo(newName).absolutePath() );
      
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      snapshotName_ = newName;
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      snapshotCounter_ = 1;
      
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    }else
      snapshotCounter_++;
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    QString comments;
    if (dialog.metaData_storeComments_cb->isChecked()) {
        comments = PluginFunctions::collectObjectComments(
                dialog.metaData_comments_visibleOnly_cb->isChecked(),
                dialog.metaData_comments_targetedOnly_cb->isChecked()).join("\n");
    }

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    QString materials;
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    if (ACG::SceneGraph::Material::support_json_serialization() &&
    //if (ACG::SceneGraph::Material::CP_JSON_SERIALIZABLE &&
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            dialog.metaData_storeMatInfo_cb->isChecked()) {
        materials = PluginFunctions::collectObjectMaterials(
                dialog.metaData_comments_visibleOnly_cb->isChecked(),
                dialog.metaData_comments_targetedOnly_cb->isChecked()).join("\n");
    }

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    //now take the snapshot
    switch ( baseLayout_->mode() ){

      case QtMultiViewLayout::SingleView:
      {
        QImage finalImage;

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        examiner_widgets_[PluginFunctions::activeExaminer()]->snapshot(finalImage,
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            dialog.snapWidth->value(), dialog.snapHeight->value(),
            dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked(),
            dialog.multisampling->isChecked() ? dialog.num_samples->value() : 1);
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        if (!comments.isEmpty())
            finalImage.setText("Mesh Comments", comments);
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        if (!materials.isEmpty())
            finalImage.setText("Mesh Materials", materials);
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        if (dialog.metaData_storeView_cb->isChecked()) {
            QSize window_size;
            if (isMaximized())
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              window_size = QSize(-width(), -height());
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            else
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              window_size = QSize (width(), height());
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            int splitter_size = 0;
            if (OpenFlipperSettings().value("Core/Gui/ToolBoxes/ToolBoxOnTheRight",true).toBool())
              splitter_size = toolSplitter_->sizes()[1];
            else
              splitter_size = toolSplitter_->sizes()[0];

            QString view;
            examiner_widgets_[PluginFunctions::activeExaminer()]->encodeView(view, window_size, splitter_size);
            finalImage.setText("View", view);
        }
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        finalImage.save(newName);

        break;
      }
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      case QtMultiViewLayout::DoubleView:
      {
    	int w = dialog.snapHeight->value();

    	double relSizeW = static_cast<double>( examiner_widgets_[0]->glWidth() / static_cast<double>( glScene_->width() ) );

    	//Get the images
    	QImage img[2];
    	examiner_widgets_[0]->snapshot(img[0], static_cast<int>(relSizeW * w) , dialog.snapWidth->value(),
    								   dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked());
    	examiner_widgets_[1]->snapshot(img[1], static_cast<int>(relSizeW * w) , dialog.snapWidth->value(),
    	    						   dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked());

    	QImage finalImage(img[0].width() + img[1].width() +2, img[0].height(), QImage::Format_ARGB32_Premultiplied);

    	QPainter painter(&finalImage);

    	painter.fillRect(0,0,finalImage.width(), finalImage.height(), QBrush(Qt::gray));

    	painter.drawImage(QRectF(           0,             0, img[0].width(), img[0].height()),img[0],
    	                  QRectF(           0,             0, img[0].width(), img[0].height()) );
    	painter.drawImage(QRectF(img[0].width()+2,         0, img[1].width(), img[1].height()),img[1],
    	                  QRectF(           0,             0, img[1].width(), img[1].height()) );

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        if (!comments.isEmpty())
            finalImage.setText("Mesh Comments", comments);
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    	finalImage.save(newName);

    	break;
      }

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      case QtMultiViewLayout::Grid:
      {
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        // Compute size of each viewer
        int w = dialog.snapWidth->value();
        int h = dialog.snapHeight->value();
        
        // Relative size of first viewer (in relation to the other viewers
        double relSizeW = (double)examiner_widgets_[0]->glWidth() / (double)glScene_->width();
        double relSizeH = (double)examiner_widgets_[0]->glHeight() / (double)glScene_->height();
          
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        QImage img0,img1,img2,img3;

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        examiner_widgets_[0]->snapshot(img0, (int)((double)w * relSizeW),           (int)((double)h * relSizeH),
                                       dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked());
        examiner_widgets_[1]->snapshot(img1, (int)((double)w * (1.0 - relSizeW)),   (int)((double)h * relSizeH),
                                       dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked());
        examiner_widgets_[2]->snapshot(img2, (int)((double)w * relSizeW),           (int)((double)h * (1.0 - relSizeH)),
                                       dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked());
        examiner_widgets_[3]->snapshot(img3, (int)((double)w * (1.0 - relSizeW)),   (int)((double)h * (1.0 - relSizeH)),
                                       dialog.transparent->isChecked(), dialog.hideCoordsys->isChecked());
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        QImage finalImage(img0.width() + img1.width()+2, img0.height() + img2.height()+2, QImage::Format_ARGB32_Premultiplied);
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        QPainter painter(&finalImage);
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        painter.fillRect(0,0,finalImage.width(), finalImage.height(), QBrush(Qt::gray));

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        painter.drawImage(QRectF(           0,             0, img0.width(), img0.height()),img0,
                          QRectF(           0,             0, img0.width(), img0.height()) );
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        painter.drawImage(QRectF(img0.width()+2,           0, img1.width(), img1.height()),img1,
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                          QRectF(           0,             0, img1.width(), img1.height()) );
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        painter.drawImage(QRectF(          0,img0.height()+2, img2.width(), img2.height()),img2,
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                          QRectF(           0,             0, img2.width(), img2.height()) );
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        painter.drawImage(QRectF(img0.width()+2, img0.height()+2, img3.width(), img3.height()),img3,
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                          QRectF(           0,             0, img3.width(), img3.height()) );

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        if (!comments.isEmpty())
            finalImage.setText("Mesh Comments", comments);
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        finalImage.save(newName);

        break;
      }
      case QtMultiViewLayout::HSplit:
      {
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        // Compute size of each viewer
        int w = dialog.snapWidth->value();
        int h = dialog.snapHeight->value();
        
        // Relative size of first viewer (in relation to the other viewers
        double relSizeW = (double)examiner_widgets_[0]->glWidth() / (double)glScene_->width();
        double relSizeH1 = (double)examiner_widgets_[1]->glHeight() / (double)glScene_->height();
        double relSizeH2 = (double)examiner_widgets_[2]->glHeight() / (double)glScene_->height();
        double relSizeH3 = (double)examiner_widgets_[3]->glHeight() / (double)glScene_->height();