The wheel widget can be used to change values over a very large range in very small steps. Using the setMass member, it can be configured as a flywheel.
Definition at line 25 of file qwt_wheel.h.
Public Member Functions | |
QwtWheel (QWidget *parent=0, const char *name=0) | |
virtual | ~QwtWheel () |
virtual void | setOrientation (Qt::Orientation) |
double | totalAngle () const |
double | viewAngle () const |
int | tickCnt () const |
int | internalBorder () const |
double | mass () const |
void | setTotalAngle (double angle) |
void | setTickCnt (int cnt) |
void | setViewAngle (double angle) |
void | setInternalBorder (int width) |
void | setMass (double val) |
void | setWheelWidth (int w) |
virtual QSize | sizeHint () const |
virtual QSize | minimumSizeHint () const |
virtual QSizePolicy | sizePolicy () const |
Protected Member Functions | |
virtual void | resizeEvent (QResizeEvent *e) |
virtual void | paintEvent (QPaintEvent *e) |
void | layoutWheel (bool update=TRUE) |
void | draw (QPainter *p, const QRect &update_rect) |
void | drawWheel (QPainter *p, const QRect &r) |
void | drawWheelBackground (QPainter *p, const QRect &r) |
void | setColorArray () |
virtual void | valueChange () |
virtual void | paletteChange (const QPalette &) |
virtual double | getValue (const QPoint &p) |
virtual void | getScrollMode (const QPoint &p, int &scrollMode, int &direction) |
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Constructor. Definition at line 20 of file qwt_wheel.cpp. References QwtSliderBase::setUpdateTime(). |
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Destructor. Definition at line 37 of file qwt_wheel.cpp. |
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Redraw panel and wheel. Definition at line 437 of file qwt_wheel.cpp. References drawWheel(). Referenced by paintEvent(). |
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Redraw the wheel.
References drawWheelBackground(), QwtDblRange::maxValue(), QwtDblRange::minValue(), QwtSliderBase::orientation(), and QwtDblRange::value(). Referenced by draw(). |
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Draw the Wheel's background gradient. Definition at line 123 of file qwt_wheel.cpp. References QwtSliderBase::orientation(), and setColorArray(). Referenced by drawWheel(). |
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Determine the scrolling mode and direction corresponding to a specified point.
Implements QwtSliderBase. Definition at line 481 of file qwt_wheel.cpp. |
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Determine the value corresponding to a specified point.
Implements QwtSliderBase. Definition at line 372 of file qwt_wheel.cpp. References QwtDblRange::maxValue(), QwtDblRange::minValue(), and QwtSliderBase::orientation(). |
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Recalculate the slider's geometry and layout based on. Definition at line 411 of file qwt_wheel.cpp. Referenced by resizeEvent(), setInternalBorder(), setOrientation(), and setWheelWidth(). |
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Reimplemented from QwtSliderBase. Definition at line 97 of file qwt_wheel.cpp. References QwtSliderBase::mass(). |
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Return a minimum size hint.
References QwtSliderBase::orientation(). Referenced by sizeHint(). |
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Qt Paint Event. Definition at line 425 of file qwt_wheel.cpp. References draw(), and QwtPaintBuffer::painter(). |
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Call update() when the palette changes. Definition at line 560 of file qwt_wheel.cpp. |
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Qt Resize Event. Definition at line 402 of file qwt_wheel.cpp. References layoutWheel(). |
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Set up the color array for the background pixmap. Definition at line 45 of file qwt_wheel.cpp. Referenced by drawWheelBackground(). |
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Set the internal border width of the wheel. The internal border must not be smaller than 1 and is limited in dependence on the wheel's size. Values outside the allowed range will be clipped. The internal border defaults to 2.
References layoutWheel(). |
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Set the mass of the wheel. Assigning a mass turns the wheel into a flywheel.
Reimplemented from QwtSliderBase. Definition at line 497 of file qwt_wheel.cpp. References QwtSliderBase::setMass(). |
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Set the wheel's orientation.
References layoutWheel(), QwtSliderBase::orientation(), and QwtSliderBase::setOrientation(). |
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Adjust the number of grooves in the wheel's surface. The number of grooves is limited to 6 <= cnt <= 50. Values outside this range will be clipped. The default value is 10.
References qwtLim(). |
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Set the total angle which the wheel can be turned. One full turn of the wheel corresponds to an angle of 360 degrees. A total angle of n*360 degrees means that the wheel has to be turned n times around its axis to get from the minimum value to the maximum value. The default setting of the total angle is 360 degrees.
References qwtLim(). |
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Specify the visible portion of the wheel. You may use this function for fine-tuning the appearance of the wheel. The default value is 175 degrees. The value is limited from 10 to 175 degrees.
References qwtLim(). |
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Set the width of the wheel. Corresponds to the wheel height for horizontal orientation, and the wheel width for vertical orientation.
References layoutWheel(). |
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References minimumSizeHint(). |
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References QwtSliderBase::orientation(). |
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Notify value change.
Reimplemented from QwtSliderBase. Definition at line 467 of file qwt_wheel.cpp. References QwtSliderBase::valueChange(). |