Qwt User's Guide
6.0.2
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#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 |
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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 &) |
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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) |
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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 |
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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 | |
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QwtSeriesData < QwtIntervalSample > * | d_series |
QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( ).
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.
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explicit |
Constructor
title | Title of the curve |
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explicit |
Constructor
title | Title of the curve |
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virtual |
Reimplemented from QwtPlotSeriesItem< QwtIntervalSample >.
const QBrush & QwtPlotIntervalCurve::brush | ( | ) | const |
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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.
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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.
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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 |
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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 |
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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 |
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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.