C++ (Cpp) nPagesChanged Examples

Example #1

File: qgscomposition.cpp Project: Nald/Quantum-GIS

void QgsComposition::setNumPages( int pages )
{
  int currentPages = numPages();
  int diff = pages - currentPages;
  if ( diff >= 0 )
  {
    for ( int i = 0; i < diff; ++i )
    {
      addPaperItem();
    }
  }
  else
  {
    diff = -diff;
    for ( int i = 0; i < diff; ++i )
    {
      delete mPages.last();
      mPages.removeLast();
    }
  }

  // update the corresponding variable
  QgsExpression::setSpecialColumn( "$numpages", QVariant(( int )numPages() ) );

  emit nPagesChanged();
}

Example #2

File: qgscomposition.cpp Project: namhh/Quantum-GIS

void QgsComposition::setNumPages( int pages )
{
  int currentPages = numPages();
  int diff = pages - currentPages;
  if ( diff >= 0 )
  {
    for ( int i = 0; i < diff; ++i )
    {
      addPaperItem();
    }
  }
  else
  {
    diff = -diff;
    for ( int i = 0; i < diff; ++i )
    {
      delete mPages.last();
      mPages.removeLast();
    }
  }
  emit nPagesChanged();
}

Example #3

File: qgscompositionwidget.cpp Project: ACorradini/QGIS

QgsCompositionWidget::QgsCompositionWidget( QWidget* parent, QgsComposition* c ): QWidget( parent ), mComposition( c )
{
  setupUi( this );
  blockSignals( true );
  createPaperEntries();

  //unit
  mPaperUnitsComboBox->addItem( tr( "mm" ) );
  mPaperUnitsComboBox->addItem( tr( "inch" ) );

  //orientation
  mPaperOrientationComboBox->insertItem( 0, tr( "Landscape" ) );
  mPaperOrientationComboBox->insertItem( 1, tr( "Portrait" ) );
  mPaperOrientationComboBox->setCurrentIndex( 0 );

  //read with/height from composition and find suitable entries to display
  displayCompositionWidthHeight();

  if ( mComposition )
  {
    mNumPagesSpinBox->setValue( mComposition->numPages() );
    connect( mComposition, SIGNAL( nPagesChanged() ), this, SLOT( setNumberPages() ) );

    updatePageStyle();

    //read printout resolution from composition
    mResolutionSpinBox->setValue( mComposition->printResolution() );

    //print as raster
    mPrintAsRasterCheckBox->setChecked( mComposition->printAsRaster() );

    // world file generation
    mGenerateWorldFileCheckBox->setChecked( mComposition->generateWorldFile() );

    // populate the map list
    mWorldFileMapComboBox->clear();
    QList<const QgsComposerMap*> availableMaps = mComposition->composerMapItems();
    QList<const QgsComposerMap*>::const_iterator mapItemIt = availableMaps.constBegin();
    for ( ; mapItemIt != availableMaps.constEnd(); ++mapItemIt )
    {
      mWorldFileMapComboBox->addItem( tr( "Map %1" ).arg(( *mapItemIt )->id() ), qVariantFromValue(( void* )*mapItemIt ) );
    }

    int idx = mWorldFileMapComboBox->findData( qVariantFromValue(( void* )mComposition->worldFileMap() ) );
    if ( idx != -1 )
    {
      mWorldFileMapComboBox->setCurrentIndex( idx );
    }

    // Connect to addition / removal of maps
    connect( mComposition, SIGNAL( composerMapAdded( QgsComposerMap* ) ), this, SLOT( onComposerMapAdded( QgsComposerMap* ) ) );
    connect( mComposition, SIGNAL( itemRemoved( QgsComposerItem* ) ), this, SLOT( onItemRemoved( QgsComposerItem* ) ) );

    mSnapToleranceSpinBox->setValue( mComposition->snapTolerance() );

    //snap grid
    mGridResolutionSpinBox->setValue( mComposition->snapGridResolution() );
    mOffsetXSpinBox->setValue( mComposition->snapGridOffsetX() );
    mOffsetYSpinBox->setValue( mComposition->snapGridOffsetY() );

    QgsAtlasComposition* atlas = &mComposition->atlasComposition();
    if ( atlas )
    {
      // repopulate data defined buttons if atlas layer changes
      connect( atlas, SIGNAL( coverageLayerChanged( QgsVectorLayer* ) ),
               this, SLOT( populateDataDefinedButtons() ) );
      connect( atlas, SIGNAL( toggled( bool ) ), this, SLOT( populateDataDefinedButtons() ) );
    }
  }

  connect( mPaperSizeDDBtn, SIGNAL( dataDefinedChanged( const QString& ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperSizeDDBtn, SIGNAL( dataDefinedActivated( bool ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperSizeDDBtn, SIGNAL( dataDefinedActivated( bool ) ), mPaperSizeComboBox, SLOT( setDisabled( bool ) ) );
  connect( mPaperWidthDDBtn, SIGNAL( dataDefinedChanged( const QString& ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperWidthDDBtn, SIGNAL( dataDefinedActivated( bool ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperWidthDDBtn, SIGNAL( dataDefinedActivated( bool ) ), mPaperWidthDoubleSpinBox, SLOT( setDisabled( bool ) ) );
  connect( mPaperHeightDDBtn, SIGNAL( dataDefinedChanged( const QString& ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperHeightDDBtn, SIGNAL( dataDefinedActivated( bool ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperHeightDDBtn, SIGNAL( dataDefinedActivated( bool ) ), mPaperHeightDoubleSpinBox, SLOT( setDisabled( bool ) ) );
  connect( mNumPagesDDBtn, SIGNAL( dataDefinedChanged( const QString& ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mNumPagesDDBtn, SIGNAL( dataDefinedActivated( bool ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mNumPagesDDBtn, SIGNAL( dataDefinedActivated( bool ) ), mNumPagesSpinBox, SLOT( setDisabled( bool ) ) );
  connect( mPaperOrientationDDBtn, SIGNAL( dataDefinedChanged( const QString& ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperOrientationDDBtn, SIGNAL( dataDefinedActivated( bool ) ), this, SLOT( updateDataDefinedProperty() ) );
  connect( mPaperOrientationDDBtn, SIGNAL( dataDefinedActivated( bool ) ), mPaperOrientationComboBox, SLOT( setDisabled( bool ) ) );

  //initialize data defined buttons
  populateDataDefinedButtons();

  blockSignals( false );
}

Example #4

File: qgscomposermultiframe.cpp Project: AnAvidDeveloper/QGIS

QgsComposerMultiFrame::QgsComposerMultiFrame( QgsComposition* c, bool createUndoCommands ): mComposition( c ), mResizeMode( UseExistingFrames ), mCreateUndoCommands( createUndoCommands )
{
  mComposition->addMultiFrame( this );
  connect( mComposition, SIGNAL( nPagesChanged() ), this, SLOT( handlePageChange() ) );
}