QwtScaleMap offers transformations from a scale into a paint interval and vice versa.
Definition at line 47 of file qwt_scale_map.h.
Public Member Functions | |
QwtScaleMap () | |
QwtScaleMap (int i1, int i2, double d1, double d2) | |
~QwtScaleMap () | |
void | setTransformation (bool logarithmic) |
void | setTransformation (const QwtScaleTransformation &) |
const QwtScaleTransformation & | transformation () const |
void | setPaintInterval (int p1, int p2) |
void | setPaintXInterval (double p1, double p2) |
void | setScaleInterval (double s1, double s2) |
int | transform (double x) const |
double | invTransform (double i) const |
double | xTransform (double x) const |
double | p1 () const |
double | p2 () const |
double | s1 () const |
double | s2 () const |
Public Attributes | |
QT_STATIC_CONST double | LogMin = 1.0e-150 |
QT_STATIC_CONST double | LogMax = 1.0e150 |
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Constructor. The scale and paint device intervals are both set to [0,1]. Definition at line 104 of file qwt_scale_map.cpp. |
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Constructor. Constructs a QwtScaleMap instance with initial paint device and scale intervals
Definition at line 125 of file qwt_scale_map.cpp. References setScaleInterval(). |
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Destructor.
Definition at line 135 of file qwt_scale_map.cpp. |
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Transform an paint device value into a value in the interval of the scale.
Definition at line 141 of file qwt_scale_map.h. References QwtScaleTransformation::invXForm. Referenced by QwtSlider::getValue(), QwtPlotPicker::invTransform(), and QwtPlot::invTransform(). |
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Definition at line 106 of file qwt_scale_map.h. |
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Definition at line 114 of file qwt_scale_map.h. |
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Definition at line 90 of file qwt_scale_map.h. |
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Definition at line 98 of file qwt_scale_map.h. |
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Specify the borders of the paint device interval.
Definition at line 197 of file qwt_scale_map.cpp. Referenced by QwtPlot::canvasMap(), QwtThermo::layoutThermo(), QwtScaleDraw::setAngleRange(), and QwtScaleDraw::setGeometry(). |
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Specify the borders of the paint device interval.
Definition at line 209 of file qwt_scale_map.cpp. Referenced by QwtSlider::layoutSlider(). |
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Specify the borders of the scale interval.
Definition at line 171 of file qwt_scale_map.cpp. References QwtScaleTransformation::xForm. Referenced by QwtPlot::canvasMap(), QwtScaleMap(), QwtSlider::rangeChange(), QwtThermo::setRange(), and QwtScaleDraw::setScaleDiv(). |
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Transform a point related to the scale interval into an point related to the interval of the paint device and round it to an integer. (In Qt <= 3.x paint devices are integer based. )
Definition at line 153 of file qwt_scale_map.h. References xTransform(). Referenced by QwtScaleDraw::drawTick(), QwtScaleDraw::labelPlacement(), QwtPlotPicker::transform(), QwtPlot::transform(), and QwtSlider::xyPosition(). |
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Transform a point related to the scale interval into an point related to the interval of the paint device Definition at line 123 of file qwt_scale_map.h. References QwtScaleTransformation::xForm. Referenced by transform(). |