QwtPainter – A collection of QPainter workarounds. Synopsis #include <qwt_painter.h> Static Public Member Functions static void setPolylineSplitting (bool) En/Disable line splitting for the raster paint engine. static bool polylineSplitting () static void setRoundingAlignment (bool) static bool roundingAlignment () static bool roundingAlignment (QPainter *) static void drawText (QPainter *, double x, double y, const QString &)…
QwtOHLCSample – Open-High-Low-Close sample used in financial charts. Synopsis #include <qwt_samples.h> Public Member Functions QwtOHLCSample (double time=0.0, double open=0.0, double high=0.0, double low=0.0, double close=0.0) QwtInterval boundingInterval () const Calculate the bounding interval of the OHLC values. bool isValid () const Check if a sample is valid. Public Attributes double time double open Opening price….
QwtNullTransform – Null transformation. Synopsis #include <qwt_transform.h> Inherits QwtTransform. Public Member Functions QwtNullTransform () Constructor. virtual ~QwtNullTransform () Destructor. virtual double transform (double value) const virtual double invTransform (double value) const virtual QwtTransform * copy () const Detailed Description Null transformation. QwtNullTransform returns the values unmodified. Member Function Documentation QwtTransform * QwtNullTransform::copy () const [virtual]…
QwtNullPaintDevice – A null paint device doing nothing. Synopsis #include <qwt_null_paintdevice.h> Inherits QPaintDevice. Inherited by QwtGraphic, and QwtStyleSheetRecorder. Public Types enum Mode { NormalMode, PolygonPathMode, PathMode } Render mode. Public Member Functions QwtNullPaintDevice () Constructor. virtual ~QwtNullPaintDevice () Destructor. void setMode (Mode) Mode mode () const virtual QPaintEngine * paintEngine () const See QPaintDevice::paintEngine() virtual…
QwtMetricsMap – A Map to translate between layout, screen and paint device metrics. Synopsis #include <qwt_layout_metrics.h> Public Member Functions bool isIdentity () const void setMetrics (const QPaintDevice *layoutMetrics, const QPaintDevice *deviceMetrics) int layoutToDeviceX (int x) const int deviceToLayoutX (int x) const int screenToLayoutX (int x) const int layoutToScreenX (int x) const int layoutToDeviceY (int y)…
QwtMatrixRasterData – A class representing a matrix of values as raster data. Synopsis #include <qwt_matrix_raster_data.h> Inherits QwtRasterData. Public Types enum ResampleMode { NearestNeighbour, BilinearInterpolation } Resampling algorithm The default setting is NearestNeighbour;. Public Member Functions QwtMatrixRasterData () Constructor. virtual ~QwtMatrixRasterData () Destructor. void setResampleMode (ResampleMode mode) Set the resampling algorithm. ResampleMode resampleMode () const virtual…
QwtMathMLTextEngine – Text Engine for the MathML renderer of the Qt solutions package. Synopsis #include <qwt_mathml_text_engine.h> Inherits QwtTextEngine. Public Member Functions QwtMathMLTextEngine () Constructor. virtual ~QwtMathMLTextEngine () Destructor. virtual double heightForWidth (const QFont &font, int flags, const QString &text, double width) const virtual QSizeF textSize (const QFont &font, int flags, const QString &text) const virtual…
QwtMagnifier – QwtMagnifier provides zooming, by magnifying in steps. Synopsis #include <qwt_magnifier.h> Inherits QObject. Inherited by QwtPlotMagnifier. Public Member Functions QwtMagnifier (QWidget *) virtual ~QwtMagnifier () Destructor. QWidget * parentWidget () const QWidget * parentWidget () const void setEnabled (bool) En/disable the magnifier. bool isEnabled () const void setMouseFactor (double) Change the mouse factor. double…
QwtLogTransform – Logarithmic transformation. Synopsis #include <qwt_transform.h> Inherits QwtTransform. Public Member Functions QwtLogTransform () Constructor. virtual ~QwtLogTransform () Destructor. virtual double transform (double value) const virtual double invTransform (double value) const virtual double bounded (double value) const virtual QwtTransform * copy () const Public Attributes QT_STATIC_CONST double LogMin = 1.0e-150 Smallest allowed value for logarithmic…
QwtLogScaleEngine – A scale engine for logarithmic scales. Synopsis #include <qwt_scale_engine.h> Inherits QwtScaleEngine. Public Member Functions QwtLogScaleEngine (uint base=10) virtual ~QwtLogScaleEngine () Destructor. virtual void autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const virtual QwtScaleDiv divideScale (double x1, double x2, int numMajorSteps, int numMinorSteps, double stepSize=0.0) const Calculate a scale division for an…
QwtLog10ScaleEngine – A scale engine for logarithmic (base 10) scales. Synopsis #include <qwt_scale_engine.h> Inherits QwtScaleEngine. Public Member Functions virtual void autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const virtual QwtScaleDiv divideScale (double x1, double x2, int numMajorSteps, int numMinorSteps, double stepSize=0.0) const virtual QwtScaleTransformation * transformation () const Protected Member Functions QwtDoubleInterval log10…
QwtLinearScaleEngine – A scale engine for linear scales. Synopsis #include <qwt_scale_engine.h> Inherits QwtScaleEngine. Inherited by QwtDateScaleEngine. Public Member Functions QwtLinearScaleEngine (uint base=10) virtual ~QwtLinearScaleEngine () Destructor. virtual void autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const virtual QwtScaleDiv divideScale (double x1, double x2, int numMajorSteps, int numMinorSteps, double stepSize=0.0) const Calculate a scale…
QwtLinearColorMap – QwtLinearColorMap builds a color map from color stops. Synopsis #include <qwt_color_map.h> Inherits QwtColorMap. Public Types enum Mode { FixedColors, ScaledColors } Public Member Functions QwtLinearColorMap (QwtColorMap::Format=QwtColorMap::RGB) QwtLinearColorMap (const QColor &from, const QColor &to, QwtColorMap::Format=QwtColorMap::RGB) virtual ~QwtLinearColorMap () Destructor. void setMode (Mode) Set the mode of the color map. Mode mode () const void…
QwtLegendLabel – A widget representing something on a QwtLegend. Synopsis #include <qwt_legend_label.h> Inherits QwtTextLabel. Public Slots void setChecked (bool on) Signals void clicked () Signal, when the legend item has been clicked. void pressed () Signal, when the legend item has been pressed. void released () Signal, when the legend item has been released. void…
QwtLegendItemManager – Abstract API to bind plot items to the legend. Synopsis #include <qwt_legend_itemmanager.h> Inherited by QwtPlotItem. Public Member Functions QwtLegendItemManager () virtual ~QwtLegendItemManager () virtual void updateLegend (QwtLegend *legend) const =0 virtual QWidget * legendItem () const =0 Detailed Description Abstract API to bind plot items to the legend. Constructor & Destructor Documentation QwtLegendItemManager::QwtLegendItemManager…
QwtLegendItem – A legend label. Synopsis #include <qwt_legend_item.h> Inherits QwtTextLabel. Public Types enum IdentifierMode { NoIdentifier = 0, ShowLine = 1, ShowSymbol = 2, ShowText = 4 } Public Slots void setChecked (bool on) Signals void clicked () void pressed () void released () void checked (bool) Public Member Functions QwtLegendItem (QWidget *parent=0) QwtLegendItem (const…
QwtLegendData – Attributes of an entry on a legend. Synopsis #include <qwt_legend_data.h> Public Types enum Mode { ReadOnly, Clickable, Checkable } Mode defining how a legend entry interacts. enum Role { ModeRole, TitleRole, IconRole, UserRole = 32 } Identifier how to interprete a QVariant. Public Member Functions QwtLegendData () Constructor. ~QwtLegendData () Destructor. void setValues…
QwtLegend – The legend widget. Synopsis #include <qwt_legend.h> Inherits QwtAbstractLegend. Public Slots virtual void updateLegend (const QVariant &, const QList< QwtLegendData > &) Update the entries for an item. Signals void clicked (const QVariant &itemInfo, int index) void checked (const QVariant &itemInfo, bool on, int index) Public Member Functions QwtLegend (QWidget *parent=NULL) virtual ~QwtLegend ()…
QwtKnob – The Knob Widget. Synopsis #include <qwt_knob.h> Inherits QwtAbstractSlider. Public Types enum KnobStyle { Flat, Raised, Sunken, Styled } Style of the knob surface. enum MarkerStyle { NoMarker = -1, Tick, Triangle, Dot, Nub, Notch } Marker type. Public Member Functions QwtKnob (QWidget *parent=NULL) Constructor. virtual ~QwtKnob () Destructor. void setAlignment (Qt::Alignment) Set the…
QwtIntervalSymbol – A drawing primitive for displaying an interval like an error bar. Synopsis #include <qwt_interval_symbol.h> Public Types enum Style { NoSymbol = -1, Bar, Box, UserSymbol = 1000 } Symbol style. Public Member Functions QwtIntervalSymbol (Style=NoSymbol) QwtIntervalSymbol (const QwtIntervalSymbol &) Copy constructor. virtual ~QwtIntervalSymbol () Destructor. QwtIntervalSymbol & operator= (const QwtIntervalSymbol &) Assignment operator….