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 68 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 QwtText | 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 113 of file qwt_dial.h. |
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Definition at line 101 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 93 of file qwt_dial.h. |
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Constructor.
Definition at line 143 of file qwt_dial.cpp. References QwtDialScaleDraw, QwtDoubleRange::setRange(), and setScaleArc(). |
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Destructor.
Definition at line 183 of file qwt_dial.cpp. |
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Definition at line 289 of file qwt_dial.cpp. References qwtMin. Referenced by contentsRect(), drawContents(), drawFrame(), and updateMask(). |
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Definition at line 272 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 545 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 435 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 482 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 658 of file qwt_dial.cpp. Referenced by drawContents(). |
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Draw the scale
Definition at line 680 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 731 of file qwt_dial.cpp. Referenced by drawContents(). |
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Definition at line 235 of file qwt_dial.cpp. |
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Implements QwtAbstractSlider. Definition at line 1127 of file qwt_dial.cpp. References contentsRect(). |
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Find the value for a given position
Implements QwtAbstractSlider. Definition at line 1024 of file qwt_dial.cpp. References QwtDoubleRange::maxValue(), QwtDoubleRange::minValue(), mode(), QwtAbstractSlider::mouseOffset(), QwtAbstractSlider::scrollMode(), QwtAbstractSlider::setMouseOffset(), QwtDoubleRange::value(), and wrapping(). |
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true when the area outside of the frame is visible
Definition at line 210 of file qwt_dial.cpp. Referenced by resizeEvent(). |
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Handles key events
Reimplemented from QwtAbstractSlider. Reimplemented in QwtCompass. Definition at line 1159 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 263 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 912 of file qwt_dial.cpp. |
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Return a minimum size hint.
Definition at line 989 of file qwt_dial.cpp. References lineWidth(). |
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Return the lower limit of the scale arc.
Definition at line 906 of file qwt_dial.cpp. |
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The default mode is QwtDial::RotateNeedle.
Definition at line 360 of file qwt_dial.cpp. Referenced by drawContents(), QwtCompass::drawScaleContents(), getValue(), and QwtCompass::keyPressEvent(). |
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Definition at line 772 of file qwt_dial.cpp. |
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Definition at line 763 of file qwt_dial.cpp. Referenced by QwtAnalogClock::drawHand(). |
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The origin is the angle where scale and needle is relative to.
Definition at line 937 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 403 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 778 of file qwt_dial.cpp. References updateScale(). |
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Resize the dial widget.
Definition at line 394 of file qwt_dial.cpp. References hasVisibleBackground(), and updateMask(). |
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Definition at line 302 of file qwt_dial.cpp. References contentsRect(). Referenced by drawContents(). |
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Return the scale draw.
Definition at line 809 of file qwt_dial.cpp. |
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Return the scale draw.
Definition at line 803 of file qwt_dial.cpp. |
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Reimplemented in QwtAnalogClock, and QwtCompass. Definition at line 895 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 220 of file qwt_dial.cpp. References lineWidth(). |
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Sets the line width
Definition at line 246 of file qwt_dial.cpp. |
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Change the mode of the meter.
The default mode is QwtDial::RotateNeedle.
Definition at line 337 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 747 of file qwt_dial.cpp. |
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Change the origin. The origin is the angle where scale and needle is relative to.
Definition at line 925 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 836 of file qwt_dial.cpp. References updateScale(). Referenced by QwtAnalogClock::QwtAnalogClock(). |
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Change the arc of the scale
Definition at line 948 of file qwt_dial.cpp. References qwtMax, and qwtMin. Referenced by QwtDial(). |
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Set an individual scale draw
Definition at line 819 of file qwt_dial.cpp. References updateScale(). Referenced by setScaleOptions(). |
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A wrapper method for accessing the scale draw.
Definition at line 859 of file qwt_dial.cpp. References QwtAbstractScaleDraw::Backbone, QwtAbstractScaleDraw::enableComponent(), and setScaleDraw(). Referenced by QwtAnalogClock::QwtAnalogClock(), and QwtCompass::QwtCompass(). |
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See: QwtAbstractScaleDraw::setTickLength, QwtDialScaleDraw::setPenWidth.
Definition at line 879 of file qwt_dial.cpp. References QwtDialScaleDraw::setPenWidth(), and QwtAbstractScaleDraw::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 375 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 196 of file qwt_dial.cpp. References updateMask(). |
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Definition at line 973 of file qwt_dial.cpp. References lineWidth(). |
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Update the scale with the current attributes
Definition at line 787 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 964 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 388 of file qwt_dial.cpp. References QwtDoubleRange::periodic(). Referenced by getValue(). |