QuPlotCanvasPainterComponent Class Reference

plot canvas painting can be delegated to this object More...

#include <quplotcanvaspaintercomponent.h>

Inheritance diagram for QuPlotCanvasPainterComponent:

Public Member Functions
	QuPlotCanvasPainterComponent ()
QString	name () const
	returns the name of the component: "canvas_painter"
void	attachToPlot (QuPlotBase *)
	in this method you would call QwtPlot::attach for the QwtPlotItem items in the component
void	connectToPlot (QuPlotBase *)
	in this method you would create Qt signal/slot connections
void	update (QPainter *p, const QuPlotBase *plot, const QList< QwtPlotCurve * >curves, const CuData &options)
	draws the canvas of the plot, writing the name of the curves, the zoom hint or other text on the background
Public Member Functions inherited from QuPlotComponent
virtual	~QuPlotComponent ()

Detailed Description

plot canvas painting can be delegated to this object

This class is used to decorate the plot and display text on the canvas. QuPlotBase::drawCanvas uses this component.

Constructor & Destructor Documentation

QuPlotCanvasPainterComponent()

QuPlotCanvasPainterComponent::QuPlotCanvasPainterComponent

(

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Member Function Documentation

attachToPlot()

void QuPlotCanvasPainterComponent::attachToPlot ( QuPlotBase * plot )

inlinevirtual

in this method you would call QwtPlot::attach for the QwtPlotItem items in the component

Example

See QuPlotMarkerComponent::attachToPlot

Implements QuPlotComponent.

connectToPlot()

void QuPlotCanvasPainterComponent::connectToPlot ( QuPlotBase * plot )

inlinevirtual

in this method you would create Qt signal/slot connections

Example

See QuPlotMarkerComponent::connectToPlot and QuPlotZoomComponent::connectToPlot

Implements QuPlotComponent.

name()

QString QuPlotCanvasPainterComponent::name ( ) const

virtual

returns the name of the component: "canvas_painter"

Returns

the QString "canvas_painter"

Implements QuPlotComponent.

Referenced by QuPlotBase::init().

update()

void QuPlotCanvasPainterComponent::update	(	QPainter *	p,
		const QuPlotBase *	plot,
		const QList< QwtPlotCurve * >	curves,
		const CuData &	options )

draws the canvas of the plot, writing the name of the curves, the zoom hint or other text on the background

Parameters

p	the QPainter
plot	the QuPlotBase
curves	the list of QwtPlotCurve items
options	the options to configure the update

options

The possible options are as follows:

• show_title: boolean, true to draw the title of the plot
• show_zoom_hint: boolean, true if the text "Press shift key to zoom" has to be shown
• zoom_disabled: boolean, true if zoom is disabled

The zoom hint is displayed if show_zoom_hint is true and zoom_disabled is false

Referenced by QuPlotBase::drawCanvas().

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The documentation for this class was generated from the following files:

• quplotcanvaspaintercomponent.h
• quplotcanvaspaintercomponent.cpp