QwtDial is intended as base class for dial widgets like speedometers, compass widgets, clocks ...
A dial contains a scale and a needle indicating the current value of the dial. Depending on Mode one of them is fixed and the other is rotating. If not isReadOnly() the dial can be rotated by dragging the mouse or using keyboard inputs (see keyPressEvent()). A dial might be wrapping, what means a rotation below/above one limit continues on the other limit (f.e compass). The scale might cover any arc of the dial, its values are related to the origin() of the dial.
Qwt is missing a set of good looking needles (QwtDialNeedle). Contributions are very welcome.
Definition at line 72 of file qwt_dial.h.
Public Types | |
enum | Shadow { Plain = QFrame::Plain, Raised = QFrame::Raised, Sunken = QFrame::Sunken } |
enum | ScaleOptions { ScaleBackbone = 1, ScaleTicks = 2, ScaleLabel = 4 } |
enum | Mode { RotateNeedle, RotateScale } |
Public Member Functions | |
QwtDial (QWidget *parent=NULL) | |
virtual | ~QwtDial () |
void | setFrameShadow (Shadow) |
Shadow | frameShadow () const |
bool | hasVisibleBackground () const |
void | showBackground (bool) |
void | setLineWidth (int) |
int | lineWidth () const |
void | setMode (Mode) |
Mode | mode () const |
virtual void | setWrapping (bool) |
bool | wrapping () const |
virtual void | setScale (int maxMajIntv, int maxMinIntv, double step=0.0) |
void | setScaleArc (double min, double max) |
void | setScaleOptions (int) |
void | setScaleTicks (int minLen, int medLen, int majLen, int penWidth=1) |
double | minScaleArc () const |
double | maxScaleArc () const |
virtual void | setOrigin (double) |
double | origin () const |
virtual void | setNeedle (QwtDialNeedle *) |
const QwtDialNeedle * | needle () const |
QwtDialNeedle * | needle () |
QRect | boundingRect () const |
QRect | contentsRect () const |
virtual QRect | scaleContentsRect () const |
virtual QSize | sizeHint () const |
virtual QSize | minimumSizeHint () const |
virtual void | setScaleDraw (QwtDialScaleDraw *) |
QwtDialScaleDraw * | scaleDraw () |
const QwtDialScaleDraw * | scaleDraw () const |
Protected Member Functions | |
virtual void | paintEvent (QPaintEvent *) |
virtual void | resizeEvent (QResizeEvent *) |
virtual void | keyPressEvent (QKeyEvent *) |
virtual void | updateMask () |
virtual void | drawFrame (QPainter *p) |
virtual void | drawContents (QPainter *) const |
virtual void | drawFocusIndicator (QPainter *) const |
virtual void | drawScale (QPainter *, const QPoint ¢er, int radius, double origin, double arcMin, double arcMax) const |
virtual void | drawScaleContents (QPainter *painter, const QPoint ¢er, int radius) const |
virtual void | drawNeedle (QPainter *, const QPoint &, int radius, double direction, QPalette::ColorGroup) const |
virtual QString | scaleLabel (double) const |
void | updateScale () |
virtual void | rangeChange () |
virtual void | valueChange () |
virtual double | getValue (const QPoint &) |
virtual void | getScrollMode (const QPoint &, int &scrollMode, int &direction) |
Friends | |
class | QwtDialScaleDraw |
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In case of RotateNeedle the needle is rotating, in case of RotateScale, the needle points to origin() and the scale is rotating. Definition at line 117 of file qwt_dial.h. |
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Definition at line 105 of file qwt_dial.h. |
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Frame shadow. Unfortunately it is not possible to use QFrame::Shadow as a property of a widget that is not derived from QFrame. The following enum is made for the designer only. It is safe to use QFrame::Shadow instead. Definition at line 97 of file qwt_dial.h. |
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Constructor.
Definition at line 165 of file qwt_dial.cpp. References scaleDraw(), QwtScaleDraw::setGeometry(), QwtDoubleRange::setRange(), and setScaleArc(). |
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Destructor.
Definition at line 205 of file qwt_dial.cpp. |
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Definition at line 311 of file qwt_dial.cpp. Referenced by contentsRect(), drawContents(), and drawFrame(). |
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Definition at line 294 of file qwt_dial.cpp. References boundingRect(), and lineWidth(). Referenced by drawFocusIndicator(), getScrollMode(), and scaleContentsRect(). |
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Draw the contents inside the frame. QColorGroup::Background is the background color outside of the frame. QColorGroup::Base is the background color inside the frame. QColorGroup::Foreground is the background color inside the scale.
Definition at line 560 of file qwt_dial.cpp. References boundingRect(), drawNeedle(), drawScale(), drawScaleContents(), QwtAbstractSlider::isValid(), QwtDoubleRange::maxValue(), QwtDoubleRange::minValue(), mode(), origin(), scaleContentsRect(), and QwtDoubleRange::value(). Referenced by paintEvent(). |
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Draw a dotted round circle, if !isReadOnly()
Definition at line 459 of file qwt_dial.cpp. References contentsRect(), and QwtAbstractSlider::isReadOnly(). Referenced by paintEvent(). |
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Draw the frame around the dial
Definition at line 506 of file qwt_dial.cpp. References boundingRect(), QwtPainter::drawRoundFrame(), and lineWidth(). Referenced by paintEvent(). |
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Draw the needle Qwt is missing a set of good looking needles. Contributions are very welcome.
Reimplemented in QwtAnalogClock. Definition at line 695 of file qwt_dial.cpp. Referenced by drawContents(). |
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Draw the scale
Definition at line 717 of file qwt_dial.cpp. Referenced by drawContents(). |
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Draw the contents inside the scale Paints nothing.
Reimplemented in QwtCompass. Definition at line 763 of file qwt_dial.cpp. Referenced by drawContents(). |
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Definition at line 257 of file qwt_dial.cpp. |
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Implements QwtAbstractSlider. Definition at line 1162 of file qwt_dial.cpp. References contentsRect(). |
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Find the value for a given position
Implements QwtAbstractSlider. Definition at line 1059 of file qwt_dial.cpp. |
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true when the area outside of the frame is visible
Definition at line 232 of file qwt_dial.cpp. Referenced by resizeEvent(). |
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Handles key events
Reimplemented from QwtAbstractSlider. Reimplemented in QwtCompass. Definition at line 1194 of file qwt_dial.cpp. References QwtDoubleRange::incValue(), QwtAbstractSlider::isReadOnly(), QwtAbstractSlider::isValid(), QwtDoubleRange::maxValue(), QwtDoubleRange::minValue(), QwtDoubleRange::pageSize(), QwtDoubleRange::prevValue(), QwtAbstractSlider::setValue(), QwtAbstractSlider::sliderMoved(), and QwtDoubleRange::value(). Referenced by QwtCompass::keyPressEvent(). |
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Definition at line 285 of file qwt_dial.cpp. Referenced by contentsRect(), drawFrame(), minimumSizeHint(), setFrameShadow(), and sizeHint(). |
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Return the upper limit of the scale arc.
Definition at line 947 of file qwt_dial.cpp. |
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Return a minimum size hint.
Definition at line 1024 of file qwt_dial.cpp. References lineWidth(), and QwtScaleDraw::minHeight(). |
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Return the lower limit of the scale arc.
Definition at line 941 of file qwt_dial.cpp. |
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The default mode is QwtDial::RotateNeedle.
Definition at line 384 of file qwt_dial.cpp. Referenced by drawContents(), QwtCompass::drawScaleContents(), and QwtCompass::keyPressEvent(). |
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Definition at line 804 of file qwt_dial.cpp. |
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Definition at line 795 of file qwt_dial.cpp. Referenced by setNeedle(). |
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The origin is the angle where scale and needle is relative to.
Definition at line 972 of file qwt_dial.cpp. Referenced by drawContents(), QwtAnalogClock::drawNeedle(), QwtCompass::drawScaleContents(), and QwtCompass::keyPressEvent(). |
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Repaint the dial.
Definition at line 427 of file qwt_dial.cpp. References drawContents(), drawFocusIndicator(), drawFrame(), and QwtPaintBuffer::painter(). |
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QwtDoubleRange update hook.
Reimplemented from QwtDoubleRange. Definition at line 810 of file qwt_dial.cpp. References updateScale(). |
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Resize the dial widget.
Definition at line 418 of file qwt_dial.cpp. References hasVisibleBackground(). |
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Definition at line 324 of file qwt_dial.cpp. References contentsRect(). Referenced by drawContents(). |
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Return the scale draw.
Definition at line 841 of file qwt_dial.cpp. |
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Return the scale draw.
Definition at line 835 of file qwt_dial.cpp. Referenced by QwtDial(), and setScaleDraw(). |
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Reimplemented in QwtAnalogClock, and QwtCompass. Definition at line 927 of file qwt_dial.cpp. Referenced by QwtDialScaleDraw::label(). |
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Sets the frame shadow value from the frame style.
Definition at line 242 of file qwt_dial.cpp. References lineWidth(). |
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Sets the line width
Definition at line 268 of file qwt_dial.cpp. |
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Change the mode of the meter.
The default mode is QwtDial::RotateNeedle.
Definition at line 361 of file qwt_dial.cpp. |
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Set a needle for the dial Qwt is missing a set of good looking needles. Contributions are very welcome.
Definition at line 779 of file qwt_dial.cpp. References needle(). |
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Change the origin. The origin is the angle where scale and needle is relative to.
Definition at line 960 of file qwt_dial.cpp. Referenced by QwtAnalogClock::QwtAnalogClock(), and QwtCompass::QwtCompass(). |
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Change the intervals of the scale
Definition at line 868 of file qwt_dial.cpp. References updateScale(). Referenced by QwtAnalogClock::QwtAnalogClock(). |
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Change the arc of the scale
Definition at line 983 of file qwt_dial.cpp. Referenced by QwtDial(). |
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Set an individual scale draw
Definition at line 851 of file qwt_dial.cpp. References scaleDraw(), and updateScale(). Referenced by setScaleOptions(). |
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A wrapper method for accessing the scale draw.
Definition at line 892 of file qwt_dial.cpp. References QwtScaleDraw::options(), QwtScaleDraw::setOptions(), setScaleDraw(), QwtScaleDraw::setTickLength(), and QwtDialScaleDraw::showLabels(). Referenced by QwtAnalogClock::QwtAnalogClock(), and QwtCompass::QwtCompass(). |
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See: QwtScaleDraw::setTickLength, QwtDialScaleDraw::setPenWidth.
Definition at line 914 of file qwt_dial.cpp. References QwtDialScaleDraw::setPenWidth(), and QwtScaleDraw::setTickLength(). Referenced by QwtAnalogClock::QwtAnalogClock(). |
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Sets whether it is possible to step the value from the highest value to the lowest value and vice versa to on.
Definition at line 399 of file qwt_dial.cpp. References QwtDoubleRange::setPeriodic(). Referenced by QwtAnalogClock::QwtAnalogClock(), and QwtCompass::QwtCompass(). |
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Show/Hide the area outside of the frame
Definition at line 218 of file qwt_dial.cpp. |
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Definition at line 1008 of file qwt_dial.cpp. References lineWidth(), and QwtScaleDraw::minHeight(). |
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Update the scale with the current attributes
Definition at line 819 of file qwt_dial.cpp. References QwtLinearScaleEngine::divideScale(), QwtDoubleRange::maxValue(), QwtDoubleRange::minValue(), and QwtLinearScaleEngine::transformation(). Referenced by rangeChange(), setScale(), and setScaleDraw(). |
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QwtDoubleRange update hook.
Reimplemented from QwtAbstractSlider. Definition at line 999 of file qwt_dial.cpp. References QwtAbstractSlider::valueChange(). |
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wrapping() holds whether it is possible to step the value from the highest value to the lowest value and vice versa.
Definition at line 412 of file qwt_dial.cpp. References QwtDoubleRange::periodic(). |