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Qwt User's Guide 6.3.0
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A plot item, which displays a zone. More...
#include <qwt_plot_zoneitem.h>
Public Member Functions | |
| QwtPlotZoneItem () | |
| Constructor. | |
| virtual | ~QwtPlotZoneItem () |
| Destructor. | |
| virtual int | rtti () const override |
| void | setOrientation (Qt::Orientation) |
| Set the orientation of the zone. | |
| Qt::Orientation | orientation () const |
| void | setInterval (double min, double max) |
| void | setInterval (const QwtInterval &) |
| QwtInterval | interval () const |
| void | setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine) |
| void | setPen (const QPen &) |
| Assign a pen. | |
| const QPen & | pen () const |
| void | setBrush (const QBrush &) |
| Assign a brush. | |
| const QBrush & | brush () const |
| virtual void | draw (QPainter *, const QwtScaleMap &, const QwtScaleMap &, const QRectF &canvasRect) const override |
| virtual QRectF | boundingRect () const override |
Public Member Functions inherited from QwtPlotItem | |
| QwtPlotItem () | |
| QwtPlotItem (const QString &title) | |
| QwtPlotItem (const QwtText &title) | |
| virtual | ~QwtPlotItem () |
| Destroy the QwtPlotItem. | |
| void | attach (QwtPlot *plot) |
| Attach the item to a plot. | |
| void | detach () |
| This method detaches a QwtPlotItem from any QwtPlot it has been associated with. | |
| QwtPlot * | plot () const |
| Return attached plot. | |
| void | setTitle (const QString &title) |
| void | setTitle (const QwtText &title) |
| const QwtText & | title () const |
| void | setItemAttribute (ItemAttribute, bool on=true) |
| bool | testItemAttribute (ItemAttribute) const |
| void | setItemInterest (ItemInterest, bool on=true) |
| bool | testItemInterest (ItemInterest) const |
| void | setRenderHint (RenderHint, bool on=true) |
| bool | testRenderHint (RenderHint) const |
| void | setRenderThreadCount (uint numThreads) |
| uint | renderThreadCount () const |
| void | setLegendIconSize (const QSize &) |
| QSize | legendIconSize () const |
| double | z () const |
| void | setZ (double z) |
| Set the z value. | |
| void | show () |
| Show the item. | |
| void | hide () |
| Hide the item. | |
| virtual void | setVisible (bool) |
| bool | isVisible () const |
| void | setAxes (QwtAxisId xAxis, QwtAxisId yAxis) |
| void | setXAxis (QwtAxisId) |
| QwtAxisId | xAxis () const |
| Return xAxis. | |
| void | setYAxis (QwtAxisId) |
| QwtAxisId | yAxis () const |
| Return yAxis. | |
| virtual void | itemChanged () |
| virtual void | legendChanged () |
| virtual void | getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const |
| Calculate a hint for the canvas margin. | |
| virtual void | updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) |
| Update the item to changes of the axes scale division. | |
| virtual void | updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &) |
| Update the item to changes of the legend info. | |
| QRectF | scaleRect (const QwtScaleMap &, const QwtScaleMap &) const |
| Calculate the bounding scale rectangle of 2 maps. | |
| QRectF | paintRect (const QwtScaleMap &, const QwtScaleMap &) const |
| Calculate the bounding paint rectangle of 2 maps. | |
| virtual QList< QwtLegendData > | legendData () const |
| Return all information, that is needed to represent the item on the legend. | |
| virtual QwtGraphic | legendIcon (int index, const QSizeF &) const |
A plot item, which displays a zone.
A horizontal zone highlights an interval of the y axis - a vertical zone an interval of the x axis - and is unbounded in the opposite direction. It is filled with a brush and its border lines are optionally displayed with a pen.
Definition at line 33 of file qwt_plot_zoneitem.h.
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explicit |
Constructor.
Initializes the zone with no pen and a semi transparent gray brush
Sets the following item attributes:
The z value is initialized by 5
Definition at line 50 of file qwt_plot_zoneitem.cpp.
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virtual |
Destructor.
Definition at line 62 of file qwt_plot_zoneitem.cpp.
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overridevirtual |
The bounding rectangle is build from the interval in one direction and something invalid for the opposite direction.
Reimplemented from QwtPlotItem.
Definition at line 297 of file qwt_plot_zoneitem.cpp.
| const QBrush & QwtPlotZoneItem::brush | ( | ) | const |
Definition at line 138 of file qwt_plot_zoneitem.cpp.
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overridevirtual |
Draw the zone
| painter | Painter |
| xMap | x Scale Map |
| yMap | y Scale Map |
| canvasRect | Contents rectangle of the canvas in painter coordinates |
Implements QwtPlotItem.
Definition at line 223 of file qwt_plot_zoneitem.cpp.
| QwtInterval QwtPlotZoneItem::interval | ( | ) | const |
Definition at line 209 of file qwt_plot_zoneitem.cpp.
| Qt::Orientation QwtPlotZoneItem::orientation | ( | ) | const |
Definition at line 165 of file qwt_plot_zoneitem.cpp.
| const QPen & QwtPlotZoneItem::pen | ( | ) | const |
Definition at line 112 of file qwt_plot_zoneitem.cpp.
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overridevirtual |
Reimplemented from QwtPlotItem.
Definition at line 68 of file qwt_plot_zoneitem.cpp.
| void QwtPlotZoneItem::setBrush | ( | const QBrush & | brush | ) |
Assign a brush.
The brush is used to fill the zone
| brush | Brush |
Definition at line 125 of file qwt_plot_zoneitem.cpp.
| void QwtPlotZoneItem::setInterval | ( | const QwtInterval & | interval | ) |
Set the interval of the zone
For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis.
| interval | Zone interval |
Definition at line 196 of file qwt_plot_zoneitem.cpp.
| void QwtPlotZoneItem::setInterval | ( | double | min, |
| double | max ) |
Set the interval of the zone
For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis.
| min | Minimum of the interval |
| max | Maximum of the interval |
Definition at line 181 of file qwt_plot_zoneitem.cpp.
| void QwtPlotZoneItem::setOrientation | ( | Qt::Orientation | orientation | ) |
Set the orientation of the zone.
A horizontal zone highlights an interval of the y axis, a vertical zone of the x axis. It is unbounded in the opposite direction.
Definition at line 152 of file qwt_plot_zoneitem.cpp.
| void QwtPlotZoneItem::setPen | ( | const QColor & | color, |
| qreal | width = 0.0, | ||
| Qt::PenStyle | style = Qt::SolidLine ) |
Build and assign a pen
In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.
| color | Pen color |
| width | Pen width |
| style | Pen style |
Definition at line 86 of file qwt_plot_zoneitem.cpp.
| void QwtPlotZoneItem::setPen | ( | const QPen & | pen | ) |
Assign a pen.
The pen is used to draw the border lines of the zone
| pen | Pen |
Definition at line 99 of file qwt_plot_zoneitem.cpp.