QwtPlotSvgItem(3)

📦
version 6.3.0 · 6 versions
, in alpine 3.24

💅 QwtPlotSvgItem(3) — Library Functions Manual, bestie

okay so this is QwtPlotSvgItem(3) from the Library Functions Manual, and it's giving “plot item that displays SVG data” in the most useful way possible. 🦋

🌸 NAME

QwtPlotSvgItem — a plot item, which displays data in Scalable Vector Graphics (SVG) format. Like, maps? Often maps. 🗺️✨

✨ SYNOPSIS

#include <qwt_plot_svgitem.h>

This class inherits QwtPlotGraphicItem. (Yes bestie, inheritance is the moment. 👑)

🫶 Public Member Functions

  • QwtPlotSvgItem (const QString &title=QString()) — Constructor. 💖
  • QwtPlotSvgItem (const QwtText &title) — Constructor. 💖
  • virtual ~QwtPlotSvgItem () — Destructor.
  • bool loadFile (const QRectF &, const QString &fileName) — loads a file, bestie.
  • bool loadData (const QRectF &, const QByteArray &) — loads data, no cap.

🦋 Public Member Functions inherited from QwtPlotGraphicItem

  • QwtPlotGraphicItem (const QString &title=QString()) — Constructor.
  • QwtPlotGraphicItem (const QwtText &title) — Constructor.
  • virtual ~QwtPlotGraphicItem () — Destructor.
  • void setGraphic (const QRectF &rect, const QwtGraphic &)
  • QwtGraphic graphic () const
  • virtual QRectF boundingRect () const override — Bounding rectangle of the item. 🎀
  • virtual void draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override
  • virtual int rtti () const override

🌈 Public Member Functions inherited from QwtPlotItem

  • QwtPlotItem ()
  • QwtPlotItem (const QString &title)
  • QwtPlotItem (const QwtText &title)
  • virtual ~QwtPlotItem () — Destroy the QwtPlotItem.
  • void attach (QwtPlot *plot) — Attach the item to a plot.
  • void detach () — This method detaches a QwtPlotItem from any QwtPlot it has been associated with.
  • QwtPlot * plot () const — Return attached plot.
  • void setTitle (const QString &title)
  • void setTitle (const QwtText &title)
  • const QwtText & title () const
  • void setItemAttribute (ItemAttribute, bool on=true)
  • bool testItemAttribute (ItemAttribute) const
  • void setItemInterest (ItemInterest, bool on=true)
  • bool testItemInterest (ItemInterest) const
  • void setRenderHint (RenderHint, bool on=true)
  • bool testRenderHint (RenderHint) const
  • void setRenderThreadCount (uint numThreads)
  • uint renderThreadCount () const
  • void setLegendIconSize (const QSize &)
  • QSize legendIconSize () const
  • double z () const
  • void setZ (double z) — Set the z value.
  • void show () — Show the item.
  • void hide () — Hide the item.
  • virtual void setVisible (bool)
  • bool isVisible () const
  • void setAxes (QwtAxisId xAxis, QwtAxisId yAxis)
  • void setXAxis (QwtAxisId)
  • QwtAxisId xAxis () const — Return xAxis.
  • void setYAxis (QwtAxisId)
  • QwtAxisId yAxis () const — Return yAxis.
  • virtual void itemChanged ()
  • virtual void legendChanged ()
  • virtual void getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const — Calculate a hint for the canvas margin.
  • virtual void updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) — Update the item to changes of the axes scale division.
  • virtual void updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &) — Update the item to changes of the legend info.
  • QRectF scaleRect (const QwtScaleMap &, const QwtScaleMap &) const — Calculate the bounding scale rectangle of 2 maps.
  • QRectF paintRect (const QwtScaleMap &, const QwtScaleMap &) const — Calculate the bounding paint rectangle of 2 maps.
  • virtual QList< QwtLegendData > legendData () const — Return all information, that is needed to represent the item on the legend.
  • virtual QwtGraphic legendIcon (int index, const QSizeF &) const

🫧 Additional Inherited Members

🌟 Public Types inherited from QwtPlotItem

  • enum RttiValues { Rtti_PlotItem = 0, Rtti_PlotGrid, Rtti_PlotScale, Rtti_PlotLegend, Rtti_PlotMarker, Rtti_PlotCurve, Rtti_PlotSpectroCurve, Rtti_PlotIntervalCurve, Rtti_PlotHistogram, Rtti_PlotSpectrogram, Rtti_PlotGraphic, Rtti_PlotTradingCurve, Rtti_PlotBarChart, Rtti_PlotMultiBarChart, Rtti_PlotShape, Rtti_PlotTextLabel, Rtti_PlotZone, Rtti_PlotVectorField, Rtti_PlotUserItem = 1000 } — Runtime type information. 🔥
  • enum ItemAttribute { Legend = 0x01, AutoScale = 0x02, Margins = 0x04 } — Plot Item Attributes.
  • enum ItemInterest { ScaleInterest = 0x01, LegendInterest = 0x02 } — Plot Item Interests.
  • enum RenderHint { RenderAntialiased = 0x1 } — Render hints.
  • typedef QFlags< ItemAttribute > ItemAttributes
  • typedef QFlags< ItemInterest > ItemInterests
  • typedef QFlags< RenderHint > RenderHints

🧚 Protected Member Functions inherited from QwtPlotItem

  • QwtGraphic defaultIcon (const QBrush &, const QSizeF &) const — Return a default icon from a brush. 🎀

💜 Detailed Description

A plot item, which displays data in Scalable Vector Graphics (SVG) format. 💅

SVG images are often used to display maps

QwtPlotSvgItem is only a small convenience wrapper class for QwtPlotGraphicItem, that creates a QwtGraphic from SVG data. Lowkey delegation, highkey slay. ✨

Definition at line 28 of file qwt_plot_svgitem.h.

🎀 Constructor & Destructor Documentation

QwtPlotSvgItem::QwtPlotSvgItem (const QString & title = QString()) [explicit]

Constructor.

Parameters: title — Title.

Definition at line 20 of file qwt_plot_svgitem.cpp.

QwtPlotSvgItem::QwtPlotSvgItem (const QwtText & title) [explicit]

Constructor.

Parameters: title — Title.

Definition at line 29 of file qwt_plot_svgitem.cpp.

QwtPlotSvgItem::~QwtPlotSvgItem () [virtual]

Destructor.

Definition at line 35 of file qwt_plot_svgitem.cpp.

🔥 Member Function Documentation

bool QwtPlotSvgItem::loadData (const QRectF & rect, const QByteArray & data)

Load SVG data. 💖

Parameters:

  • rect — Bounding rectangle.
  • data — in SVG format.

Returns: true, if the SVG data could be loaded.

Definition at line 74 of file qwt_plot_svgitem.cpp.

bool QwtPlotSvgItem::loadFile (const QRectF & rect, const QString & fileName)

Load a SVG file. 🗂️

Parameters:

  • rect — Bounding rectangle.
  • fileName — SVG file name.

Returns: true, if the SVG file could be loaded.

Definition at line 47 of file qwt_plot_svgitem.cpp.

🤖 Author

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