C++ QMapIterator类代码示例

int Plot::closestCurve(int xpos, int ypos, int &dist, int &point)
{
QwtScaleMap map[QwtPlot::axisCnt];
for ( int axis = 0; axis < QwtPlot::axisCnt; axis++ )
	map[axis] = canvasMap(axis);

double dmin = 1.0e10;
int key = -1;
for (QMapIterator<int, QwtPlotCurve *> it = d_curves.begin(); it != d_curves.end(); ++it ) 
	{
	QwtPlotCurve *c = (QwtPlotCurve *)it.data();
	if (!c)
		continue;

	for (int i=0; i<c->dataSize(); i++)
		{
		double cx = map[c->xAxis()].xTransform(c->x(i)) - double(xpos);
		double cy = map[c->yAxis()].xTransform(c->y(i)) - double(ypos);
		double f = qwtSqr(cx) + qwtSqr(cy);
		if (f < dmin)
			{
			dmin = f;
			key = it.key();
			point = i;
			}
		 }
	}
dist = int(sqrt(dmin));
return key;
}

void Emotions::storeClass(QString klassName, NaiveBayesClassifier *classifier){
    double acc=0;
    if(klassName.contains("calm") || klassName.contains("exited")){
        acc=EMOTION_AROUSAL_ACCURACY;
    }else if(klassName.contains("positive") || klassName.contains("negative")){
        acc=EMOTION_VALENCE_ACCURACY;
    }else{
        return;
    }

    if(classifier->getTrainedClasses().contains(klassName)){
        QFile file(_dataPath+"."+klassName);
        if (!file.open(QIODevice::WriteOnly)) {
            qDebug() << "Emotions : cannot open file "+file.fileName()+" : "
                     << qPrintable(file.errorString()) << file.fileName()<< endl;
            return;
        }

        QMapIterator<double, double>* clasIt = new QMapIterator<double,double>(*classifier->getTrainedClasses().value(klassName));
        while(clasIt->hasNext()){
            clasIt->next();
            for(int j=0;j<clasIt->value();++j){
                QString* strVal=new QString("");
                strVal->setNum(clasIt->key(),'f', acc);
                file.write(strVal->toAscii());
                file.putChar('\n');
            }
        }
    }
}

void LocationTable::splitByAnchors(const PreprocessedContents& text, const Anchor& textStartPosition, QList<PreprocessedContents>& strings, QList<Anchor>& anchors) const {

  Anchor currentAnchor = Anchor(textStartPosition);
  size_t currentOffset = 0;

  QMapIterator<std::size_t, Anchor> it = m_offsetTable;

  while (currentOffset < (size_t)text.size())
  {
    Anchor nextAnchor(KDevelop::CursorInRevision::invalid());
    size_t nextOffset;

    if(it.hasNext()) {
      it.next();
      nextOffset = it.key();
      nextAnchor = it.value();
    }else{
      nextOffset = text.size();
      nextAnchor = Anchor(KDevelop::CursorInRevision::invalid());
    }

    if( nextOffset-currentOffset > 0 ) {
      strings.append(text.mid(currentOffset, nextOffset-currentOffset));
      anchors.append(currentAnchor);
    }

    currentOffset = nextOffset;
    currentAnchor = nextAnchor;
  }
}

QwtDoubleRect Plot::boundingRect ()
{
QMapIterator<int, QwtPlotCurve *> it = d_curves.begin();
QwtPlotCurve *c = (QwtPlotCurve *)it.data();

double minX = c->minXValue();
double minY = c->minYValue();
double maxX = c->maxXValue();
double maxY = c->maxYValue();

it++;

for (it; it != d_curves.end(); ++it) 
	{
	QwtPlotCurve *c = (QwtPlotCurve *)it.data();
	if (!c)
		continue;

	minX = (c->minXValue() < minX) ? c->minXValue() : minX;
	maxX = (c->maxXValue() > maxX) ? c->maxXValue() : maxX;
	minY = (c->minYValue() < minY) ? c->minYValue() : minY;
	maxY = (c->maxYValue() > maxY) ? c->maxYValue() : maxY;
	}

QwtDoubleRect r;
r.setLeft(minX);
r.setRight(maxX);
r.setTop(minY);
r.setBottom(maxY);
return r;
}

void ReportWindow::colorList() {

    //
    // ADD CODE HERE TO CHECK FOR CHANGES TO DOCUMENT
    //
    QMap<QString, QColor> cm = _colorMap;
    ColorList cl(this);
    cl.init(&_colorMap);
    cl.exec();
    if(cm.count() == _colorMap.count()) {
        // the two lists have the same number of items so
        // we will have to check each item for equality
        // to see if a change was made
        QMapIterator<QString, QColor> cit;
        for(cit = cm.begin(); cit != cm.end(); ++cit) {
            if(!_colorMap.contains(cit.key()) || _colorMap[cit.key()] != cm[cit.key()]) {
                setModified(TRUE);
                break;
            }
        }
    } else {
        // they don't have the same number of items
        // so we can just assume the list was changed
        setModified(TRUE);
    }
}

//---------------------------------------------------------------------------
//  getWordItems
//
//! Construct a list of word items to be inserted into a word list, based on
//! the results of a list of searches.
//
//! @param searchSpecs the list of search specifications
//! @return a list of word items
//---------------------------------------------------------------------------
QList<WordTableModel::WordItem>
WordVariationDialog::getWordItems(const QList<SearchSpec>& searchSpecs) const
{
    QList<WordTableModel::WordItem> wordItems;
    QMap<QString, QString> wordMap;
    QListIterator<SearchSpec> lit (searchSpecs);
    while (lit.hasNext()) {
        QStringList wordList = wordEngine->search(lexicon, lit.next(), false);
        QStringListIterator wit (wordList);
        while (wit.hasNext()) {
            QString str = wit.next();
            wordMap.insert(str.toUpper(), str);
        }
    }

    QMapIterator<QString, QString> mit (wordMap);
    while (mit.hasNext()) {
        mit.next();
        QString value = mit.value();
        QList<QChar> wildcardChars;
        for (int i = 0; i < value.length(); ++i) {
            QChar c = value[i];
            if (c.isLower())
                wildcardChars.append(c);
        }
        QString wildcard;
        if (!wildcardChars.isEmpty()) {
            qSort(wildcardChars.begin(), wildcardChars.end(),
                  Auxil::localeAwareLessThanQChar);
            foreach (const QChar& c, wildcardChars)
                wildcard.append(c.toUpper());
        }
        wordItems.append(WordTableModel::WordItem(
            mit.key(), WordTableModel::WordNormal, wildcard));
    }

qReal::IdList Repository::elementsByPropertyContent(const QString &propertyValue, bool sensitivity
		, bool regExpression) const
{
	const Qt::CaseSensitivity caseSensitivity = sensitivity ? Qt::CaseSensitive : Qt::CaseInsensitive;

	const QRegExp regExp(propertyValue, caseSensitivity);
	IdList result;

	for (Object * const element : mObjects.values()) {
		QMapIterator<QString, QVariant> iterator = element->propertiesIterator();
		if (regExpression) {
			while (iterator.hasNext()) {
				if (iterator.next().value().toString().contains(regExp)) {
					result.append(mObjects.key(element));
					break;
				}
			}
		} else {
			while (iterator.hasNext()) {
				if (iterator.next().value().toString().contains(propertyValue, caseSensitivity)) {
					result.append(mObjects.key(element));
					break;
				}
			}
		}
	}

	return result;
}

void LocationTable::dump() const
{
  QMapIterator<std::size_t, Anchor> it = m_offsetTable;
  qCDebug(RPP) << "Location Table:";
  while (it.hasNext()) {
    it.next();
    qCDebug(RPP) << it.key() << " => " << it.value().castToSimpleCursor();
  }
}

bool tGraph::drawPoints() {
    //return _drawPoints;

    QMapIterator<int, ORStyleData> mit = _setStyle.begin();
    for( ; mit != _setStyle.end(); ++mit) {
        if(mit.data().point) return TRUE;
    }
    return FALSE;
}

void DraggerManagerPrivate::clear()
{
    QMapIterator<WidgetProperties *, QDeclarativeItem *> iterator =
            QMapIterator<WidgetProperties *, QDeclarativeItem *>(draggers);
    while (iterator.hasNext()) {
        iterator.next();
        iterator.value()->deleteLater();
    }
    draggers.clear();
}

void DraggerManager::disableDraggers()
{
    Q_D(DraggerManager);
    QMapIterator<WidgetProperties *, QDeclarativeItem *> iterator =
            QMapIterator<WidgetProperties *, QDeclarativeItem *>(d->draggers);
    while (iterator.hasNext()) {
        iterator.next();
        iterator.value()->setVisible(false);
    }
}

/**
\param val
**/
void BlSearchWidget::setFieldValue ( QString campo, QString val )
{
    BL_FUNC_DEBUG
    BlDebug::blDebug ( "BlSearchWidget::setcifprofesor", 0, val );

    QString SQLQuery("");
    SQLQuery = "SELECT * FROM " + m_tabla + " WHERE " + campo + " = $1";
    BlDbRecordSet *cur = mainCompany() ->load ( SQLQuery, val );

    if ( !cur->eof() ) {
        /// Inicializamos los valores de vuelta a ""
        QMapIterator<QString, QString> i ( m_valores );
        while ( i.hasNext() ) {
            i.next();
            m_valores.insert ( i.key(), cur->value( i.key() ) );
        } // end while
    } else {
        /// Inicializamos los valores de vuelta a ""
        QMapIterator<QString, QString> i ( m_valores );
        while ( i.hasNext() ) {
            i.next();
            m_valores.insert ( i.key(), "" );
        } // end while
    } // end if
    delete cur;
    pinta();
    
}

bool MSqlQuery::exec()
{
    // Database connection down.  Try to restart it, give up if it's still
    // down
    if (!m_db)
    {
        // Database structure's been deleted
        return false;
    }

    if (!m_db->isOpen() && !m_db->Reconnect())
    {
        LOG(VB_GENERAL, LOG_INFO, "MySQL server disconnected");
        return false;
    }

    bool result = QSqlQuery::exec();

    // if the query failed with "MySQL server has gone away"
    // Close and reopen the database connection and retry the query if it
    // connects again
    if (!result && QSqlQuery::lastError().number() == 2006 && m_db->Reconnect())
        result = QSqlQuery::exec();

    if (VERBOSE_LEVEL_CHECK(VB_DATABASE) && logLevel <= LOG_DEBUG)
    {
        QString str = lastQuery();

        // Database logging will cause an infinite loop here if not filtered
        // out
        if (!str.startsWith("INSERT INTO logging "))
        {
       	    // Sadly, neither executedQuery() nor lastQuery() display
            // the values in bound queries against a MySQL5 database.
            // So, replace the named placeholders with their values.

            QMapIterator<QString, QVariant> b = boundValues();
            while (b.hasNext())
            {
                b.next();
                str.replace(b.key(), '\'' + b.value().toString() + '\'');
            }

            LOG(VB_DATABASE, LOG_DEBUG,
                QString("MSqlQuery::exec(%1) %2%3")
                        .arg(m_db->MSqlDatabase::GetConnectionName()).arg(str)
                        .arg(isSelect() ? QString(" <<<< Returns %1 row(s)")
                                              .arg(size()) : QString()));
        }
    }

    return result;
}

/*!
  Lists values used during initialization
*/
QStringList TEIniFile::usedValues()
{
  QStringList sl;
  QMapIterator<QString, type_ValueList> it;
  for(it=SectionListDef.begin();it!=SectionListDef.end();++it)
  {
    type_ValueListIterator it1;
    for(it1=(*it).begin();it1!=(*it).end();++it1)
      sl << it.key()+"->"+it1.key();
  }
  return sl;
}

void
QueueManager::addQueuedItem( PlaylistItem *item )
{
    Playlist *pl = Playlist::instance();
    if( !pl ) return; //should never happen

    const int index = pl->m_nextTracks.findRef( item );

    QListViewItem *after;
    if( !index ) after = 0;
    else
    {
        int find = m_listview->childCount();
        if( index - 1 <= find )
            find = index - 1;
        after = m_listview->itemAtIndex( find );
    }

    QValueList<PlaylistItem*>         current = m_map.values();
    QValueListIterator<PlaylistItem*> newItem = current.find( item );

    QString title = i18n("%1 - %2").arg( item->artist(), item->title() );

    if( newItem == current.end() ) //avoid duplication
    {
        after = new QueueItem( m_listview, after, title );
        m_map[ after ] = item;
    }
    else //track is in the queue, remove it.
    {
        QListViewItem *removableItem = m_listview->findItem( title, 0 );

        if( removableItem )
        {
            //Remove the key from the map, so we can re-queue the item
            QMapIterator<QListViewItem*, PlaylistItem*> end(  m_map.end() );
            for( QMapIterator<QListViewItem*, PlaylistItem*> it = m_map.begin(); it != end; ++it )
            {
                if( it.data() == item )
                {
                    m_map.remove( it );

                    //Remove the item from the queuelist
                    m_listview->takeItem( removableItem );
                    delete removableItem;
                    return;
                }
            }
        }
    }

}