| Qwt User's Guide
    6.0.2
    | 
#include <qwt_plot_intervalcurve.h>

| Public Types | |
| enum | CurveStyle { NoCurve, Tube, UserCurve = 100 } | 
| enum | PaintAttribute { ClipPolygons = 0x01, ClipSymbol = 0x02 } | 
| typedef QFlags< PaintAttribute > | PaintAttributes | 
| Public Member Functions | |
| QwtPlotIntervalCurve (const QString &title=QString::null) | |
| QwtPlotIntervalCurve (const QwtText &title) | |
| virtual | ~QwtPlotIntervalCurve () | 
| virtual QRectF | boundingRect () const | 
| const QBrush & | brush () const | 
| virtual void | drawLegendIdentifier (QPainter *, const QRectF &) const | 
| virtual void | drawSeries (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const | 
| const QPen & | pen () const | 
| virtual int | rtti () const | 
| void | setBrush (const QBrush &) | 
| void | setPaintAttribute (PaintAttribute, bool on=true) | 
| void | setPen (const QPen &) | 
| void | setSamples (const QVector< QwtIntervalSample > &) | 
| void | setStyle (CurveStyle style) | 
| void | setSymbol (const QwtIntervalSymbol *) | 
| CurveStyle | style () const | 
| const QwtIntervalSymbol * | symbol () const | 
| bool | testPaintAttribute (PaintAttribute) const | 
|  Public Member Functions inherited from QwtPlotSeriesItem< QwtIntervalSample > | |
| QwtPlotSeriesItem (const QString &title=QString::null) | |
| QwtPlotSeriesItem (const QwtText &title) | |
| virtual | ~QwtPlotSeriesItem () | 
| QwtSeriesData < QwtIntervalSample > * | data () | 
| const QwtSeriesData < QwtIntervalSample > * | data () const | 
| size_t | dataSize () const | 
| QwtIntervalSample | sample (int index) const | 
| void | setData (QwtSeriesData< QwtIntervalSample > *) | 
| virtual void | updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) | 
|  Public Member Functions inherited from QwtPlotAbstractSeriesItem | |
| QwtPlotAbstractSeriesItem (const QString &title=QString::null) | |
| QwtPlotAbstractSeriesItem (const QwtText &title) | |
| virtual | ~QwtPlotAbstractSeriesItem () | 
| virtual void | draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &) const | 
| Qt::Orientation | orientation () const | 
| void | setOrientation (Qt::Orientation) | 
|  Public Member Functions inherited from QwtPlotItem | |
| QwtPlotItem (const QwtText &title=QwtText()) | |
| virtual | ~QwtPlotItem () | 
| void | attach (QwtPlot *plot) | 
| void | detach () | 
| void | hide () | 
| bool | isVisible () const | 
| virtual void | itemChanged () | 
| virtual QWidget * | legendItem () const | 
| QRectF | paintRect (const QwtScaleMap &, const QwtScaleMap &) const | 
| QwtPlot * | plot () const | 
| QRectF | scaleRect (const QwtScaleMap &, const QwtScaleMap &) const | 
| void | setAxes (int xAxis, int yAxis) | 
| void | setItemAttribute (ItemAttribute, bool on=true) | 
| void | setRenderHint (RenderHint, bool on=true) | 
| void | setTitle (const QString &title) | 
| void | setTitle (const QwtText &title) | 
| virtual void | setVisible (bool) | 
| void | setXAxis (int axis) | 
| void | setYAxis (int axis) | 
| void | setZ (double z) | 
| void | show () | 
| bool | testItemAttribute (ItemAttribute) const | 
| bool | testRenderHint (RenderHint) const | 
| const QwtText & | title () const | 
| virtual void | updateLegend (QwtLegend *) const | 
| int | xAxis () const | 
| int | yAxis () const | 
| double | z () const | 
|  Public Member Functions inherited from QwtLegendItemManager | |
| QwtLegendItemManager () | |
| virtual | ~QwtLegendItemManager () | 
| Protected Member Functions | |
| virtual void | drawSymbols (QPainter *, const QwtIntervalSymbol &, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const | 
| virtual void | drawTube (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const | 
| void | init () | 
| Additional Inherited Members | |
|  Protected Attributes inherited from QwtPlotSeriesItem< QwtIntervalSample > | |
| QwtSeriesData < QwtIntervalSample > * | d_series | 
QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( ![$[y1,y2] = f(x)$](form_2.png) ).
 ). 
The representation depends on the style() and an optional symbol() that is displayed for each interval. QwtPlotIntervalCurve might be used to disply error bars or the area between 2 curves.
Curve styles. The default setting is QwtPlotIntervalCurve::Tube.
| NoCurve | Don't draw a curve. Note: This doesn't affect the symbols. | 
| Tube | Build 2 curves from the upper and lower limits of the intervals and draw them with the pen(). The area between the curves is filled with the brush(). | 
| UserCurve | Styles >= QwtPlotIntervalCurve::UserCurve are reserved for derived classes that overload drawSeries() with additional application specific curve types. | 
Attributes to modify the drawing algorithm.
| 
 | explicit | 
Constructor
| title | Title of the curve | 
| 
 | explicit | 
Constructor
| title | Title of the curve | 
| 
 | virtual | 
Reimplemented from QwtPlotSeriesItem< QwtIntervalSample >.
| const QBrush & QwtPlotIntervalCurve::brush | ( | ) | const | 
| 
 | virtual | 
Draw the identifier for the legend.
In case of Tube style() a plain rectangle filled with the brush() is painted. If a symbol is assigned it is painted centered into rect.
| painter | Painter | 
| rect | Bounding rectangle for the identifier | 
Reimplemented from QwtLegendItemManager.
| 
 | virtual | 
Draw a subset of the samples
| painter | Painter | 
| xMap | Maps x-values into pixel coordinates. | 
| yMap | Maps y-values into pixel coordinates. | 
| canvasRect | Contents rect of the canvas | 
| from | Index of the first sample to be painted | 
| to | Index of the last sample to be painted. If to < 0 the series will be painted to its last sample. | 
Implements QwtPlotAbstractSeriesItem.
| 
 | protectedvirtual | 
Draw symbols for a subset of the samples
| painter | Painter | 
| symbol | Interval symbol | 
| xMap | x map | 
| yMap | y map | 
| canvasRect | Contents rect of the canvas | 
| from | Index of the first sample to be painted | 
| to | Index of the last sample to be painted | 
| 
 | protectedvirtual | 
Draw a tube
Builds 2 curves from the upper and lower limits of the intervals and draws them with the pen(). The area between the curves is filled with the brush().
| painter | Painter | 
| xMap | Maps x-values into pixel coordinates. | 
| yMap | Maps y-values into pixel coordinates. | 
| canvasRect | Contents rect of the canvas | 
| from | Index of the first sample to be painted | 
| to | Index of the last sample to be painted. If to < 0 the series will be painted to its last sample. | 
| const QPen & QwtPlotIntervalCurve::pen | ( | ) | const | 
| 
 | virtual | 
Reimplemented from QwtPlotItem.
| void QwtPlotIntervalCurve::setBrush | ( | const QBrush & | brush | ) | 
Assign a brush.
The brush is used to fill the area in Tube style().
| brush | Brush | 
| void QwtPlotIntervalCurve::setPaintAttribute | ( | PaintAttribute | attribute, | 
| bool | on = true | ||
| ) | 
Specify an attribute how to draw the curve
| attribute | Paint attribute | 
| on | On/Off | 
| void QwtPlotIntervalCurve::setPen | ( | const QPen & | pen | ) | 
| void QwtPlotIntervalCurve::setSamples | ( | const QVector< QwtIntervalSample > & | samples | ) | 
Initialize data with an array of samples.
| samples | Vector of samples | 
| void QwtPlotIntervalCurve::setStyle | ( | CurveStyle | style | ) | 
| void QwtPlotIntervalCurve::setSymbol | ( | const QwtIntervalSymbol * | symbol | ) | 
| QwtPlotIntervalCurve::CurveStyle QwtPlotIntervalCurve::style | ( | ) | const | 
Return the current style.
| const QwtIntervalSymbol * QwtPlotIntervalCurve::symbol | ( | ) | const | 
| bool QwtPlotIntervalCurve::testPaintAttribute | ( | PaintAttribute | attribute | ) | const | 
Return the current paint attributes.
 1.8.1
 1.8.1