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Qwt User's Guide
6.2.0
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The Thermometer Widget. More...
#include <qwt_thermo.h>
Public Types | |
| enum | ScalePosition { NoScale , LeadingScale , TrailingScale } |
| enum | OriginMode { OriginMinimum , OriginMaximum , OriginCustom } |
Public Slots | |
| virtual void | setValue (double) |
Public Member Functions | |
| QwtThermo (QWidget *parent=NULL) | |
| virtual | ~QwtThermo () |
| Destructor. | |
| void | setOrientation (Qt::Orientation) |
| Set the orientation. More... | |
| Qt::Orientation | orientation () const |
| void | setScalePosition (ScalePosition) |
| Change the position of the scale. More... | |
| ScalePosition | scalePosition () const |
| void | setSpacing (int) |
| Change the spacing between pipe and scale. More... | |
| int | spacing () const |
| void | setBorderWidth (int) |
| int | borderWidth () const |
| void | setOriginMode (OriginMode) |
| Change how the origin is determined. More... | |
| OriginMode | originMode () const |
| void | setOrigin (double) |
| Specifies the custom origin. More... | |
| double | origin () const |
| void | setFillBrush (const QBrush &) |
| Change the brush of the liquid. More... | |
| QBrush | fillBrush () const |
| void | setAlarmBrush (const QBrush &) |
| Specify the liquid brush above the alarm threshold. More... | |
| QBrush | alarmBrush () const |
| void | setAlarmLevel (double) |
| double | alarmLevel () const |
| void | setAlarmEnabled (bool) |
| Enable or disable the alarm threshold. More... | |
| bool | alarmEnabled () const |
| void | setColorMap (QwtColorMap *) |
| Assign a color map for the fill color. More... | |
| QwtColorMap * | colorMap () |
| const QwtColorMap * | colorMap () const |
| void | setPipeWidth (int) |
| int | pipeWidth () const |
| void | setRangeFlags (QwtInterval::BorderFlags) |
| Exclude/Include min/max values. More... | |
| QwtInterval::BorderFlags | rangeFlags () const |
| double | value () const |
| Return the value. | |
| virtual QSize | sizeHint () const override |
| virtual QSize | minimumSizeHint () const override |
| void | setScaleDraw (QwtScaleDraw *) |
| Set a scale draw. More... | |
| const QwtScaleDraw * | scaleDraw () const |
Public Member Functions inherited from QwtAbstractScale | |
| QwtAbstractScale (QWidget *parent=NULL) | |
| virtual | ~QwtAbstractScale () |
| Destructor. | |
| void | setScale (double lowerBound, double upperBound) |
| Specify a scale. More... | |
| void | setScale (const QwtInterval &) |
| Specify a scale. More... | |
| void | setScale (const QwtScaleDiv &) |
| Specify a scale. More... | |
| const QwtScaleDiv & | scaleDiv () const |
| void | setLowerBound (double value) |
| double | lowerBound () const |
| void | setUpperBound (double value) |
| double | upperBound () const |
| void | setScaleStepSize (double stepSize) |
| Set the step size used for calculating a scale division. More... | |
| double | scaleStepSize () const |
| void | setScaleMaxMajor (int ticks) |
| Set the maximum number of major tick intervals. More... | |
| int | scaleMaxMinor () const |
| void | setScaleMaxMinor (int ticks) |
| Set the maximum number of minor tick intervals. More... | |
| int | scaleMaxMajor () const |
| void | setScaleEngine (QwtScaleEngine *) |
| Set a scale engine. More... | |
| const QwtScaleEngine * | scaleEngine () const |
| QwtScaleEngine * | scaleEngine () |
| int | transform (double) const |
| double | invTransform (int) const |
| bool | isInverted () const |
| double | minimum () const |
| double | maximum () const |
| const QwtScaleMap & | scaleMap () const |
Protected Member Functions | |
| virtual void | drawLiquid (QPainter *, const QRect &) const |
| virtual void | scaleChange () override |
| Notify a scale change. | |
| virtual void | paintEvent (QPaintEvent *) override |
| virtual void | resizeEvent (QResizeEvent *) override |
| virtual void | changeEvent (QEvent *) override |
| QwtScaleDraw * | scaleDraw () |
| QRect | pipeRect () const |
| QRect | fillRect (const QRect &) const |
| Calculate the filled rectangle of the pipe. More... | |
| QRect | alarmRect (const QRect &) const |
| Calculate the alarm rectangle of the pipe. More... | |
Protected Member Functions inherited from QwtAbstractScale | |
| void | rescale (double lowerBound, double upperBound, double stepSize) |
| void | setAbstractScaleDraw (QwtAbstractScaleDraw *) |
| Set a scale draw. More... | |
| const QwtAbstractScaleDraw * | abstractScaleDraw () const |
| QwtAbstractScaleDraw * | abstractScaleDraw () |
| void | updateScaleDraw () |
The Thermometer Widget.
QwtThermo is a widget which displays a value in an interval. It supports:
The fill colors might be calculated from an optional color map If no color map has been assigned QwtThermo uses the following colors/brushes from the widget palette:
Definition at line 46 of file qwt_thermo.h.
Origin mode. This property specifies where the beginning of the liquid is placed.
| Enumerator | |
|---|---|
| OriginMinimum | The origin is the minimum of the scale. |
| OriginMaximum | The origin is the maximum of the scale. |
| OriginCustom | The origin is specified using the origin() property. |
Definition at line 91 of file qwt_thermo.h.
Position of the scale
Definition at line 73 of file qwt_thermo.h.
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explicit |
| QBrush QwtThermo::alarmBrush | ( | ) | const |
Definition at line 761 of file qwt_thermo.cpp.
| bool QwtThermo::alarmEnabled | ( | ) | const |
Definition at line 837 of file qwt_thermo.cpp.
| double QwtThermo::alarmLevel | ( | ) | const |
Definition at line 789 of file qwt_thermo.cpp.
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protected |
Calculate the alarm rectangle of the pipe.
| fillRect | Filled rectangle in the pipe |
Definition at line 944 of file qwt_thermo.cpp.
| int QwtThermo::borderWidth | ( | ) | const |
Definition at line 671 of file qwt_thermo.cpp.
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overrideprotectedvirtual |
Qt change event handler
| event | Event |
Reimplemented from QwtAbstractScale.
Definition at line 277 of file qwt_thermo.cpp.
| QwtColorMap * QwtThermo::colorMap | ( | ) |
Definition at line 697 of file qwt_thermo.cpp.
| const QwtColorMap * QwtThermo::colorMap | ( | ) | const |
Definition at line 707 of file qwt_thermo.cpp.
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protectedvirtual |
Redraw the liquid in thermometer pipe.
| painter | Painter |
| pipeRect | Bounding rectangle of the pipe without borders |
Definition at line 546 of file qwt_thermo.cpp.
| QBrush QwtThermo::fillBrush | ( | ) | const |
Definition at line 731 of file qwt_thermo.cpp.
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protected |
Calculate the filled rectangle of the pipe.
| pipeRect | Rectangle of the pipe |
Definition at line 897 of file qwt_thermo.cpp.
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overridevirtual |
Definition at line 856 of file qwt_thermo.cpp.
| Qt::Orientation QwtThermo::orientation | ( | ) | const |
| double QwtThermo::origin | ( | ) | const |
Definition at line 504 of file qwt_thermo.cpp.
| QwtThermo::OriginMode QwtThermo::originMode | ( | ) | const |
Definition at line 477 of file qwt_thermo.cpp.
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overrideprotectedvirtual |
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protected |
Definition at line 385 of file qwt_thermo.cpp.
| int QwtThermo::pipeWidth | ( | ) | const |
| QwtInterval::BorderFlags QwtThermo::rangeFlags | ( | ) | const |
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overrideprotectedvirtual |
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protected |
Definition at line 226 of file qwt_thermo.cpp.
| const QwtScaleDraw * QwtThermo::scaleDraw | ( | ) | const |
Definition at line 217 of file qwt_thermo.cpp.
| QwtThermo::ScalePosition QwtThermo::scalePosition | ( | ) | const |
| void QwtThermo::setAlarmBrush | ( | const QBrush & | brush | ) |
Specify the liquid brush above the alarm threshold.
Changes the QPalette::Highlight brush of the palette.
| brush | New brush. |
Definition at line 747 of file qwt_thermo.cpp.
| void QwtThermo::setAlarmEnabled | ( | bool | on | ) |
Enable or disable the alarm threshold.
| on | true (disabled) or false (enabled) |
Definition at line 825 of file qwt_thermo.cpp.
| void QwtThermo::setAlarmLevel | ( | double | level | ) |
Specify the alarm threshold.
| level | Alarm threshold |
Definition at line 775 of file qwt_thermo.cpp.
| void QwtThermo::setBorderWidth | ( | int | width | ) |
Set the border width of the pipe.
| width | Border width |
Definition at line 655 of file qwt_thermo.cpp.
| void QwtThermo::setColorMap | ( | QwtColorMap * | colorMap | ) |
Assign a color map for the fill color.
| colorMap | Color map |
Definition at line 683 of file qwt_thermo.cpp.
| void QwtThermo::setFillBrush | ( | const QBrush & | brush | ) |
Change the brush of the liquid.
Changes the QPalette::ButtonText brush of the palette.
| brush | New brush. |
Definition at line 720 of file qwt_thermo.cpp.
| void QwtThermo::setOrientation | ( | Qt::Orientation | orientation | ) |
Set the orientation.
| orientation | Allowed values are Qt::Horizontal and Qt::Vertical. |
Definition at line 432 of file qwt_thermo.cpp.
| void QwtThermo::setOrigin | ( | double | origin | ) |
Specifies the custom origin.
If originMode is set to OriginCustom this property controls where the liquid starts.
| origin | New origin level |
Definition at line 491 of file qwt_thermo.cpp.
| void QwtThermo::setOriginMode | ( | OriginMode | m | ) |
Change how the origin is determined.
Definition at line 464 of file qwt_thermo.cpp.
| void QwtThermo::setPipeWidth | ( | int | width | ) |
Change the width of the pipe.
| width | Width of the pipe |
Definition at line 800 of file qwt_thermo.cpp.
| void QwtThermo::setRangeFlags | ( | QwtInterval::BorderFlags | flags | ) |
Exclude/Include min/max values.
According to the flags minValue() and maxValue() are included/excluded from the pipe. In case of an excluded value the corresponding tick is painted 1 pixel off of the pipeRect().
F.e. when a minimum of 0.0 has to be displayed as an empty pipe the minValue() needs to be excluded.
| flags | Range flags |
Definition at line 157 of file qwt_thermo.cpp.
| void QwtThermo::setScaleDraw | ( | QwtScaleDraw * | scaleDraw | ) |
Set a scale draw.
For changing the labels of the scales, it is necessary to derive from QwtScaleDraw and overload QwtScaleDraw::label().
| scaleDraw | ScaleDraw object, that has to be created with new and will be deleted in ~QwtThermo() or the next call of setScaleDraw(). |
Definition at line 207 of file qwt_thermo.cpp.
| void QwtThermo::setScalePosition | ( | ScalePosition | scalePosition | ) |
Change the position of the scale.
| scalePosition | Position of the scale. |
Definition at line 515 of file qwt_thermo.cpp.
| void QwtThermo::setSpacing | ( | int | spacing | ) |
Change the spacing between pipe and scale.
A spacing of 0 means, that the backbone of the scale is below the pipe.
The default setting is 3 pixels.
| spacing | Number of pixels |
Definition at line 629 of file qwt_thermo.cpp.
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virtualslot |
Set the current value.
| value | New Value |
Definition at line 181 of file qwt_thermo.cpp.
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overridevirtual |
Definition at line 846 of file qwt_thermo.cpp.
| int QwtThermo::spacing | ( | ) | const |
Definition at line 645 of file qwt_thermo.cpp.