Section 3: library functions
QwtPlotPrintFilter – A base class for plot print filters. Synopsis #include <qwt_plot_printfilter.h> Public Types enum Options { PrintMargin = 1, PrintTitle = 2, PrintLegend = 4, PrintGrid = 8, PrintBackground = 16, PrintFrameWithScales = 32, PrintAll = ~PrintFrameWithScales } enum Item { Title, Legend, Curve, CurveSymbol, Marker, MarkerSymbol, MajorGrid, MinorGrid, CanvasBackground, AxisScale, AxisTitle, WidgetBackground }…
QwtPlotPicker – QwtPlotPicker provides selections on a plot canvas. Synopsis #include <qwt_plot_picker.h> Inherits QwtPicker. Inherited by QwtPlotZoomer. Signals void selected (const QPointF &pos) void selected (const QRectF &rect) void selected (const QVector< QPointF > &pa) void appended (const QPointF &pos) void moved (const QPointF &pos) Public Member Functions QwtPlotPicker (QWidget *canvas) Create a plot picker….
QwtPlotPanner – QwtPlotPanner provides panning of a plot canvas. Synopsis #include <qwt_plot_panner.h> Inherits QwtPanner. Public Member Functions QwtPlotPanner (QWidget *) A panner for the canvas of a QwtPlot. virtual ~QwtPlotPanner () Destructor. QWidget * canvas () Return observed plot canvas. const QWidget * canvas () const Return Observed plot canvas. QwtPlot * plot () Return…
QwtPlotMultiBarChart – QwtPlotMultiBarChart displays a series of a samples that consist each of a set of values. Synopsis #include <qwt_plot_multi_barchart.h> Inherits QwtPlotAbstractBarChart, and QwtSeriesStore< QwtSetSample >. Public Types enum ChartStyle { Grouped, Stacked } Chart styles. Public Member Functions QwtPlotMultiBarChart (const QString &title=QString::null) QwtPlotMultiBarChart (const QwtText &title) virtual ~QwtPlotMultiBarChart () Destructor. virtual int rtti ()…
QwtPlotMarker – A class for drawing markers. Synopsis #include <qwt_plot_marker.h> Inherits QwtPlotItem. Public Types enum LineStyle { NoLine, HLine, VLine, Cross } Public Member Functions QwtPlotMarker (const QString &title=QString::null) Sets alignment to Qt::AlignCenter, and style to QwtPlotMarker::NoLine. QwtPlotMarker (const QwtText &title) Sets alignment to Qt::AlignCenter, and style to QwtPlotMarker::NoLine. virtual ~QwtPlotMarker () Destructor. virtual int…
QwtPlotMagnifier – QwtPlotMagnifier provides zooming, by magnifying in steps. Synopsis #include <qwt_plot_magnifier.h> Inherits QwtMagnifier. Public Member Functions QwtPlotMagnifier (QWidget *) virtual ~QwtPlotMagnifier () Destructor. void setAxisEnabled (int axis, bool on) En/Disable an axis. bool isAxisEnabled (int axis) const QWidget * canvas () Return observed plot canvas. const QWidget * canvas () const Return Observed plot…
QwtPlotLegendItem – A class which draws a legend inside the plot canvas. Synopsis #include <qwt_plot_legenditem.h> Inherits QwtPlotItem. Public Types enum BackgroundMode { LegendBackground, ItemBackground } Background mode. Public Member Functions QwtPlotLegendItem () Constructor. virtual ~QwtPlotLegendItem () Destructor. virtual int rtti () const void setAlignment (Qt::Alignment) Set the alignmnet. Qt::Alignment alignment () const void setMaxColumns (uint)…
QwtPlotLayout – Layout engine for QwtPlot. Synopsis #include <qwt_plot_layout.h> Public Types enum Option { AlignScales = 0x01, IgnoreScrollbars = 0x02, IgnoreFrames = 0x04, IgnoreLegend = 0x08, IgnoreTitle = 0x10, IgnoreFooter = 0x20 } typedef QFlags< Option > Options Layout options. Public Member Functions QwtPlotLayout () Constructor. virtual ~QwtPlotLayout () Destructor. void setCanvasMargin (int margin, int…
QwtPlotItem – Base class for items on the plot canvas. Synopsis #include <qwt_plot_item.h> Inherited by QwtPlotGrid, QwtPlotLegendItem, QwtPlotMarker, QwtPlotRasterItem, QwtPlotScaleItem, QwtPlotSeriesItem, QwtPlotShapeItem, QwtPlotSvgItem, QwtPlotTextLabel, and QwtPlotZoneItem. Public Types enum RttiValues { Rtti_PlotItem = 0, Rtti_PlotGrid, Rtti_PlotScale, Rtti_PlotLegend, Rtti_PlotMarker, Rtti_PlotCurve, Rtti_PlotSpectroCurve, Rtti_PlotIntervalCurve, Rtti_PlotHistogram, Rtti_PlotSpectrogram, Rtti_PlotSVG, Rtti_PlotTradingCurve, Rtti_PlotBarChart, Rtti_PlotMultiBarChart, Rtti_PlotShape, Rtti_PlotTextLabel, Rtti_PlotZone, Rtti_PlotUserItem = 1000 } Runtime…
QwtPlotIntervalCurve – QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( $[y1,y2] = f(x)$ ). Synopsis #include <qwt_plot_intervalcurve.h> Inherits QwtPlotSeriesItem, and QwtSeriesStore< QwtIntervalSample >. Public Types enum CurveStyle { NoCurve, Tube, UserCurve = 100 } Curve styles. The default setting is QwtPlotIntervalCurve::Tube. enum PaintAttribute { ClipPolygons = 0x01, ClipSymbol…
QwtPlotHistogram – QwtPlotHistogram represents a series of samples, where an interval is associated with a value ( $y = f([x1,x2])$ ). Synopsis #include <qwt_plot_histogram.h> Inherits QwtPlotSeriesItem, and QwtSeriesStore< QwtIntervalSample >. Public Types enum HistogramStyle { Outline, Columns, Lines, UserStyle = 100 } Public Member Functions QwtPlotHistogram (const QString &title=QString::null) QwtPlotHistogram (const QwtText &title) virtual ~QwtPlotHistogram…
QwtPlotGrid – A class which draws a coordinate grid. Synopsis #include <qwt_plot_grid.h> Inherits QwtPlotItem. Public Member Functions QwtPlotGrid () Enables major grid, disables minor grid. virtual ~QwtPlotGrid () Destructor. virtual int rtti () const void enableX (bool tf) Enable or disable vertical grid lines. bool xEnabled () const void enableY (bool tf) Enable or disable…
QwtPlotGLCanvas – An alternative canvas for a QwtPlot derived from QGLWidget. Synopsis #include <qwt_plot_glcanvas.h> Inherits QGLWidget. Public Types enum Shadow { Plain = QFrame::Plain, Raised = QFrame::Raised, Sunken = QFrame::Sunken } Frame shadow. enum Shape { NoFrame = QFrame::NoFrame, Box = QFrame::Box, Panel = QFrame::Panel } Frame shape. Public Slots void replot () Calls repaint()…
QwtPlotDirectPainter – Painter object trying to paint incrementally. Synopsis #include <qwt_plot_directpainter.h> Inherits QObject. Public Types enum Attribute { AtomicPainter = 0x01, FullRepaint = 0x02, CopyBackingStore = 0x04 } Paint attributes. typedef QFlags< Attribute > Attributes Paint attributes. Public Member Functions QwtPlotDirectPainter (QObject *parent=NULL) Constructor. virtual ~QwtPlotDirectPainter () Destructor. void setAttribute (Attribute, bool on) bool testAttribute…
QwtPlotDict – A dictionary for plot items. Synopsis #include <qwt_plot_dict.h> Inherited by QwtPlot. Public Member Functions QwtPlotDict () virtual ~QwtPlotDict () void setAutoDelete (bool) bool autoDelete () const const QwtPlotItemList & itemList () const A QwtPlotItemList of all attached plot items. QwtPlotItemList itemList (int rtti) const void detachItems (int rtti=QwtPlotItem::Rtti_PlotItem, bool autoDelete=true) Protected Member Functions…
QwtPlotCurve – A plot item, that represents a series of points. Synopsis #include <qwt_plot_curve.h> Inherits QwtPlotSeriesItem, and QwtSeriesStore< QPointF >. Public Types enum CurveStyle { NoCurve = -1, Lines, Sticks, Steps, Dots, UserCurve = 100 } enum CurveAttribute { Inverted = 0x01, Fitted = 0x02 } enum LegendAttribute { LegendNoAttribute = 0x00, LegendShowLine = 0x01,…
QwtPlotCanvas – Canvas of a QwtPlot. Synopsis #include <qwt_plot_canvas.h> Inherits QFrame. Public Types enum PaintAttribute { BackingStore = 1, Opaque = 2, HackStyledBackground = 4, ImmediatePaint = 8 } Paint attributes. enum FocusIndicator { NoFocusIndicator, CanvasFocusIndicator, ItemFocusIndicator } Focus indicator The default setting is NoFocusIndicator. typedef QFlags< PaintAttribute > PaintAttributes Paint attributes. Public Slots void…
QwtPlotBarChart – QwtPlotBarChart displays a series of a values as bars. Synopsis #include <qwt_plot_barchart.h> Inherits QwtPlotAbstractBarChart, and QwtSeriesStore< QPointF >. Public Types enum LegendMode { LegendChartTitle, LegendBarTitles } Legend modes. Public Member Functions QwtPlotBarChart (const QString &title=QString::null) QwtPlotBarChart (const QwtText &title) virtual ~QwtPlotBarChart () Destructor. virtual int rtti () const void setSamples (const QVector< QPointF…
QwtPlotAbstractBarChart – Abstract base class for bar chart items. Synopsis #include <qwt_plot_abstract_barchart.h> Inherits QwtPlotSeriesItem. Inherited by QwtPlotBarChart, and QwtPlotMultiBarChart. Public Types enum LayoutPolicy { AutoAdjustSamples, ScaleSamplesToAxes, ScaleSampleToCanvas, FixedSampleSize } Mode how to calculate the bar width. Public Member Functions QwtPlotAbstractBarChart (const QwtText &title) virtual ~QwtPlotAbstractBarChart () Destructor. void setLayoutPolicy (LayoutPolicy) LayoutPolicy layoutPolicy () const void…
QwtPlot – A 2-D plotting widget. Synopsis #include <qwt_plot.h> Inherits QFrame, and QwtPlotDict. Public Types enum Axis { yLeft, yRight, xBottom, xTop, axisCnt } Axis index. enum LegendPosition { LeftLegend, RightLegend, BottomLegend, TopLegend } Public Slots virtual void replot () Redraw the plot. void autoRefresh () Replots the plot if autoReplot() is true. Signals void…