C++ (Cpp) createDragIcon Examples

Example #1

File: qgsfontbutton.cpp Project: cz172638/QGIS

void QgsFontButton::mouseMoveEvent( QMouseEvent *e )
{
  //handle dragging fonts from button

  if ( !( e->buttons() & Qt::LeftButton ) )
  {
    //left button not depressed, so not a drag
    QToolButton::mouseMoveEvent( e );
    return;
  }

  if ( ( e->pos() - mDragStartPosition ).manhattanLength() < QApplication::startDragDistance() )
  {
    //mouse not moved, so not a drag
    QToolButton::mouseMoveEvent( e );
    return;
  }

  //user is dragging font
  QDrag *drag = new QDrag( this );
  switch ( mMode )
  {
    case ModeTextRenderer:
      drag->setMimeData( mFormat.toMimeData() );
      break;

    case ModeQFont:
      drag->setMimeData( QgsFontUtils::toMimeData( mFont ) );
      break;
  }
  drag->setPixmap( createDragIcon() );
  drag->exec( Qt::CopyAction );
  setDown( false );
}

Example #2

File: qgscolorwidgets.cpp Project: Antoviscomi/QGIS

void QgsColorPreviewWidget::mouseMoveEvent( QMouseEvent *e )
{
  //handle dragging colors from button

  if ( !( e->buttons() & Qt::LeftButton ) )
  {
    //left button not depressed, so not a drag
    QgsColorWidget::mouseMoveEvent( e );
    return;
  }

  if (( e->pos() - mDragStartPosition ).manhattanLength() < QApplication::startDragDistance() )
  {
    //mouse not moved, so not a drag
    QgsColorWidget::mouseMoveEvent( e );
    return;
  }

  //user is dragging color

  //work out which color is being dragged
  QColor dragColor = mCurrentColor;
  if ( mColor2.isValid() )
  {
    //two color sections, check if dragged color was the second color
    int verticalSplit = qRound( height() / 2.0 );
    if ( mDragStartPosition.y() >= verticalSplit )
    {
      dragColor = mColor2;
    }
  }

  QDrag *drag = new QDrag( this );
  drag->setMimeData( QgsSymbolLayerV2Utils::colorToMimeData( dragColor ) );
  drag->setPixmap( createDragIcon( dragColor ) );
  drag->exec( Qt::CopyAction );
}