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| QCPFinancial (QCPAxis *keyAxis, QCPAxis *valueAxis) |
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virtual | ~QCPFinancial () |
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QSharedPointer< QCPFinancialDataContainer > | data () const |
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ChartStyle | chartStyle () const |
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double | width () const |
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WidthType | widthType () const |
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bool | twoColored () const |
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QBrush | brushPositive () const |
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QBrush | brushNegative () const |
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QPen | penPositive () const |
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QPen | penNegative () const |
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void | setData (QSharedPointer< QCPFinancialDataContainer > data) |
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void | setData (const QVector< double > &keys, const QVector< double > &open, const QVector< double > &high, const QVector< double > &low, const QVector< double > &close, bool alreadySorted=false) |
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void | setChartStyle (ChartStyle style) |
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void | setWidth (double width) |
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void | setWidthType (WidthType widthType) |
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void | setTwoColored (bool twoColored) |
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void | setBrushPositive (const QBrush &brush) |
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void | setBrushNegative (const QBrush &brush) |
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void | setPenPositive (const QPen &pen) |
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void | setPenNegative (const QPen &pen) |
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void | addData (const QVector< double > &keys, const QVector< double > &open, const QVector< double > &high, const QVector< double > &low, const QVector< double > &close, bool alreadySorted=false) |
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void | addData (double key, double open, double high, double low, double close) |
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virtual QCPDataSelection | selectTestRect (const QRectF &rect, bool onlySelectable) const Q_DECL_OVERRIDE |
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virtual double | selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const Q_DECL_OVERRIDE |
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virtual QCPRange | getKeyRange (bool &foundRange, QCP::SignDomain inSignDomain=QCP::sdBoth) const Q_DECL_OVERRIDE |
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virtual QCPRange | getValueRange (bool &foundRange, QCP::SignDomain inSignDomain=QCP::sdBoth, const QCPRange &inKeyRange=QCPRange()) const Q_DECL_OVERRIDE |
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| QCPAbstractPlottable1D (QCPAxis *keyAxis, QCPAxis *valueAxis) |
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virtual | ~QCPAbstractPlottable1D () |
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virtual int | dataCount () const Q_DECL_OVERRIDE |
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virtual double | dataMainKey (int index) const Q_DECL_OVERRIDE |
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virtual double | dataSortKey (int index) const Q_DECL_OVERRIDE |
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virtual double | dataMainValue (int index) const Q_DECL_OVERRIDE |
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virtual QCPRange | dataValueRange (int index) const Q_DECL_OVERRIDE |
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virtual QPointF | dataPixelPosition (int index) const Q_DECL_OVERRIDE |
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virtual bool | sortKeyIsMainKey () const Q_DECL_OVERRIDE |
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virtual int | findBegin (double sortKey, bool expandedRange=true) const Q_DECL_OVERRIDE |
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virtual int | findEnd (double sortKey, bool expandedRange=true) const Q_DECL_OVERRIDE |
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virtual QCPPlottableInterface1D * | interface1D () Q_DECL_OVERRIDE |
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| QCPAbstractPlottable (QCPAxis *keyAxis, QCPAxis *valueAxis) |
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virtual | ~QCPAbstractPlottable () |
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QString | name () const |
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bool | antialiasedFill () const |
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bool | antialiasedScatters () const |
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QPen | pen () const |
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QBrush | brush () const |
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QCPAxis * | keyAxis () const |
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QCPAxis * | valueAxis () const |
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QCP::SelectionType | selectable () const |
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bool | selected () const |
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QCPDataSelection | selection () const |
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QCPSelectionDecorator * | selectionDecorator () const |
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void | setName (const QString &name) |
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void | setAntialiasedFill (bool enabled) |
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void | setAntialiasedScatters (bool enabled) |
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void | setPen (const QPen &pen) |
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void | setBrush (const QBrush &brush) |
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void | setKeyAxis (QCPAxis *axis) |
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void | setValueAxis (QCPAxis *axis) |
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Q_SLOT void | setSelectable (QCP::SelectionType selectable) |
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Q_SLOT void | setSelection (QCPDataSelection selection) |
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void | setSelectionDecorator (QCPSelectionDecorator *decorator) |
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void | coordsToPixels (double key, double value, double &x, double &y) const |
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const QPointF | coordsToPixels (double key, double value) const |
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void | pixelsToCoords (double x, double y, double &key, double &value) const |
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void | pixelsToCoords (const QPointF &pixelPos, double &key, double &value) const |
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void | rescaleAxes (bool onlyEnlarge=false) const |
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void | rescaleKeyAxis (bool onlyEnlarge=false) const |
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void | rescaleValueAxis (bool onlyEnlarge=false, bool inKeyRange=false) const |
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bool | addToLegend (QCPLegend *legend) |
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bool | addToLegend () |
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bool | removeFromLegend (QCPLegend *legend) const |
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bool | removeFromLegend () const |
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| QCPLayerable (QCustomPlot *plot, QString targetLayer=QString(), QCPLayerable *parentLayerable=0) |
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virtual | ~QCPLayerable () |
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bool | visible () const |
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QCustomPlot * | parentPlot () const |
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QCPLayerable * | parentLayerable () const |
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QCPLayer * | layer () const |
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bool | antialiased () const |
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void | setVisible (bool on) |
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Q_SLOT bool | setLayer (QCPLayer *layer) |
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bool | setLayer (const QString &layerName) |
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void | setAntialiased (bool enabled) |
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bool | realVisibility () const |
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virtual | ~QCPPlottableInterface1D () |
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virtual void | draw (QCPPainter *painter) Q_DECL_OVERRIDE |
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virtual void | drawLegendIcon (QCPPainter *painter, const QRectF &rect) const Q_DECL_OVERRIDE |
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void | drawOhlcPlot (QCPPainter *painter, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, bool isSelected) |
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void | drawCandlestickPlot (QCPPainter *painter, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, bool isSelected) |
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double | getPixelWidth (double key, double keyPixel) const |
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double | ohlcSelectTest (const QPointF &pos, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, QCPFinancialDataContainer::const_iterator &closestDataPoint) const |
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double | candlestickSelectTest (const QPointF &pos, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, QCPFinancialDataContainer::const_iterator &closestDataPoint) const |
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void | getVisibleDataBounds (QCPFinancialDataContainer::const_iterator &begin, QCPFinancialDataContainer::const_iterator &end) const |
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QRectF | selectionHitBox (QCPFinancialDataContainer::const_iterator it) const |
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void | getDataSegments (QList< QCPDataRange > &selectedSegments, QList< QCPDataRange > &unselectedSegments) const |
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void | drawPolyline (QCPPainter *painter, const QVector< QPointF > &lineData) const |
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virtual QRect | clipRect () const Q_DECL_OVERRIDE |
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virtual QCP::Interaction | selectionCategory () const Q_DECL_OVERRIDE |
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void | applyDefaultAntialiasingHint (QCPPainter *painter) const Q_DECL_OVERRIDE |
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virtual void | selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged) Q_DECL_OVERRIDE |
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virtual void | deselectEvent (bool *selectionStateChanged) Q_DECL_OVERRIDE |
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void | applyFillAntialiasingHint (QCPPainter *painter) const |
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void | applyScattersAntialiasingHint (QCPPainter *painter) const |
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virtual void | parentPlotInitialized (QCustomPlot *parentPlot) |
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virtual void | mousePressEvent (QMouseEvent *event, const QVariant &details) |
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virtual void | mouseMoveEvent (QMouseEvent *event, const QPointF &startPos) |
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virtual void | mouseReleaseEvent (QMouseEvent *event, const QPointF &startPos) |
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virtual void | mouseDoubleClickEvent (QMouseEvent *event, const QVariant &details) |
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virtual void | wheelEvent (QWheelEvent *event) |
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void | initializeParentPlot (QCustomPlot *parentPlot) |
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void | setParentLayerable (QCPLayerable *parentLayerable) |
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bool | moveToLayer (QCPLayer *layer, bool prepend) |
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void | applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const |
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A plottable representing a financial stock chart.
This plottable represents time series data binned to certain intervals, mainly used for stock charts. The two common representations OHLC (Open-High-Low-Close) bars and Candlesticks can be set via setChartStyle.
The data is passed via setData as a set of open/high/low/close values at certain keys (typically times). This means the data must be already binned appropriately. If data is only available as a series of values (e.g. price against time), you can use the static convenience function timeSeriesToOhlc to generate binned OHLC-data which can then be passed to setData.
The width of the OHLC bars/candlesticks can be controlled with setWidth and setWidthType. A typical choice is to set the width type to wtPlotCoords (the default) and the width to (or slightly less than) one time bin interval width.
Changing the appearance
Charts can be either single- or two-colored (setTwoColored). If set to be single-colored, lines are drawn with the plottable's pen (setPen) and fills with the brush (setBrush).
If set to two-colored, positive changes of the value during an interval (close >= open) are represented with a different pen and brush than negative changes (close < open). These can be configured with setPenPositive, setPenNegative, setBrushPositive, and setBrushNegative. In two-colored mode, the normal plottable pen/brush is ignored. Upon selection however, the normal selected pen/brush (provided by the selectionDecorator) is used, irrespective of whether the chart is single- or two-colored.
Usage
Like all data representing objects in QCustomPlot, the QCPFinancial is a plottable (QCPAbstractPlottable). So the plottable-interface of QCustomPlot applies (QCustomPlot::plottable, QCustomPlot::removePlottable, etc.)
Usually, you first create an instance:
which registers it with the QCustomPlot instance of the passed axes. Note that this QCustomPlot instance takes ownership of the plottable, so do not delete it manually but use QCustomPlot::removePlottable() instead. The newly created plottable can be modified, e.g.:
Here we have used the static helper method timeSeriesToOhlc, to turn a time-price data series into a 24-hour binned open-high-low-close data series as QCPFinancial uses.
void QCPFinancial::addData |
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const QVector< double > & |
keys, |
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const QVector< double > & |
open, |
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const QVector< double > & |
high, |
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const QVector< double > & |
low, |
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const QVector< double > & |
close, |
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bool |
alreadySorted = false |
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) |
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This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Adds the provided points in keys, open, high, low and close to the current data. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.
If you can guarantee that the passed data points are sorted by keys in ascending order, you can set alreadySorted to true, to improve performance by saving a sorting run.
Alternatively, you can also access and modify the data directly via the data method, which returns a pointer to the internal data container.
- See also
- timeSeriesToOhlc