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3 Version 3, 29 June 2007
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76 * @brief Implementation of the FFChartScene class.
78 * @author ComArch S.A.
87 * Constructs a FFChart with a parent.
89 FFChart::FFChart(QWidget* parent) :
90 FFAbstractWidget(parent)
96 * A virtual destructor.
104 * Initiates an object of FFChart. Sets all needed fields and connections.
105 * It is called by all constructors.
110 setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
113 // creates needed objects
114 view = new QGraphicsView(this);
115 scene = new FFChartScene(this);
116 legend = new FFChartLegend(this);
118 //sets default values
120 autoValidate_ = true;
123 view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
124 view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
125 view->setScene(scene);
126 //necessary with our librray in Qt 4.6
128 view->setOptimizationFlag(QGraphicsView::IndirectPainting);
132 legend->setGeometry(width() / 2, 0, width() / 2, height());
138 view->installEventFilter(this);
141 connect(this,SIGNAL(seriesChanged(QList<FFChartSeries*>)),scene,SLOT(seriesChanged(QList<FFChartSeries*>)));
142 connect(legend, SIGNAL(updateSeries()), scene, SLOT(update()));
146 * Adds new series that will be drawn on the chart.
148 void FFChart::addSeries(FFChartSeries* series)
156 //series' point sorting
163 series->pen()->setCosmetic(true);
165 //add series to sies list and legend
166 series_.append(series);
168 legend->addSeries(series);
174 emit seriesChanged(series_);
178 * Removes series indicated by given pointer.
180 void FFChart::removeSeries(FFChartSeries* series)
182 //searches for series and remove it
183 for(int i = 0; i < series_.size(); ++i)
185 if(series_[i] == series)
187 legend->deleteSeries(series);
195 emit seriesChanged(series_);
199 * Removes all series.
201 void FFChart::removeSeries()
204 int num = series_.size();
205 for(int i = 0; i < num; ++i)
207 legend->deleteSeries(series_.at(0));
213 emit seriesChanged(series_);
217 * Returns a list with pointers to all series contained in the chart.
219 QList<FFChartSeries*> FFChart::series()
225 * Returns pointer to series with given name.
226 * @return pointer to the looking series or NULL if series is not found
228 FFChartSeries* FFChart::series(QString name)
230 //return pointer to first added series with given name
232 for(int i=0; i<series_.size();++i)
234 if(series_.at(i)->name() == name)
239 //If found nothing NULL is returned
244 * Turns on/off auto-sorting on series. If it is on then each newly added series
245 * will be sorted by 'x' values.
247 void FFChart::setAutoSort(const bool& autoSort)
249 autoSort_ = autoSort;
253 * Turns on/off auto-validating on series. If it is on then each newly added
254 * series will be cleaned with the same points.
256 void FFChart::setAutoValidate(const bool& autoValidate)
258 autoValidate_ = autoValidate;
262 * Returns true if auto-sorting is enabled, otherwise false.
264 bool FFChart::isAutoSortEnabled() const
270 * Returns true if auto-validating is enabled, otherwise false.
272 bool FFChart::isAutoValidateEnabled() const
274 return autoValidate_;
278 * Sets object that will be responsible for managing with events sent to
281 void FFChart::installEventFilter(QObject* object)
283 view->installEventFilter(object);
287 * Slot that zooms in the current chart into a rectangle which is smaller by
290 void FFChart::zoomIn(qreal ratio)
292 scene->zoomIn(ratio);
296 * Slot that zooms out the current chart into a rectangle which is larger by
299 void FFChart::zoomOut(qreal ratio)
301 scene->zoomOut(ratio);
305 * Moves the chart by given vector.
307 void FFChart::moveBy(QPointF point)
309 scene->moveBy(point.toPoint());
313 * Overridden virtual method. It is responsible for managing with resize events.
315 void FFChart::resizeEvent(QResizeEvent* event)
318 view->resize(size());
319 scene->setSceneRect(QRectF(0,0,event->size().width(),event->size().height()));
320 legend->setGeometry(width() / 2, 0, width() / 2, height());
322 QWidget::resizeEvent(event);
326 * Toggles the legend. If it is visible, this method makes it hidden and
329 void FFChart::showLegend()
331 if(legend->isVisible())
344 * \fn void FFChart::seriesChanged(QList<FFChartSeries*>);
346 * This Signal is emitted when the set of series was changed.