KDChart::GlobalMeasureScaling Class Reference

#include <KDChartMeasure.h>

Collaboration diagram for KDChart::GlobalMeasureScaling:

[legend]

List of all members.

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Detailed Description

Auxiliary class used by the KDChart::Measure and KDChart::Chart class.

Normally there should be no need to call any of these methods yourself.

They are used by KDChart::Chart::paint( QPainter*, const QRect& ) to adjust all of the relative Measures according to the target rectangle's size.

Default factors are (1.0, 1.0)

Definition at line 149 of file KDChartMeasure.h.

Public Member Functions
	GlobalMeasureScaling ()
virtual	~GlobalMeasureScaling ()
Static Public Member Functions
static const QPair< qreal, qreal >	currentFactors ()
	Returns the currently active factors.
static GlobalMeasureScaling *	instance ()
static QPaintDevice *	paintDevice ()
	Returns the paint device usable for calculating fort metrics.
static void	resetFactors ()
	Reset factors to the values active before the previous call of setFactors.
static void	setFactors (qreal factorX, qreal factorY)
	Set new factors to be used by all Measure objects from now on.
static void	setPaintDevice (QPaintDevice *paintDevice)
	Sets the paint device usable for calculating fort metrics.

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Constructor & Destructor Documentation

KDChart::GlobalMeasureScaling::GlobalMeasureScaling

(

)

Definition at line 194 of file KDChartMeasure.cpp.

{
    mFactors.push( qMakePair(qreal(1.0), qreal(1.0)) );
}

KDChart::GlobalMeasureScaling::~GlobalMeasureScaling

(

)

[virtual]

Definition at line 199 of file KDChartMeasure.cpp.

{
    // this space left empty intentionally
}

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Member Function Documentation

const QPair< qreal, qreal > KDChart::GlobalMeasureScaling::currentFactors

(

)

[static]

Returns the currently active factors.

Definition at line 222 of file KDChartMeasure.cpp.

References instance(), and mFactors.

Referenced by KDChart::Measure::sizeOfArea().

{
    return instance()->mFactors.top();
}

GlobalMeasureScaling * KDChart::GlobalMeasureScaling::instance

(

)

[static]

Definition at line 204 of file KDChartMeasure.cpp.

Referenced by currentFactors(), KDChart::Chart::paint(), paintDevice(), resetFactors(), setFactors(), setPaintDevice(), and KDChart::Measure::sizeOfArea().

{
    static GlobalMeasureScaling instance;
    return &instance;
}

QPaintDevice * KDChart::GlobalMeasureScaling::paintDevice

(

)

[static]

Returns the paint device usable for calculating fort metrics.

Definition at line 232 of file KDChartMeasure.cpp.

References instance(), and m_paintDevice.

Referenced by KDChart::Chart::paint(), and KDChart::CartesianAxis::paintCtx().

{
    return instance()->m_paintDevice;
}

void KDChart::GlobalMeasureScaling::resetFactors

(

)

[static]

Reset factors to the values active before the previous call of setFactors.

This works on a stack, so recursive calls works fine, like: setFactors, setFactors, unserFactors, unsetFactors

Definition at line 215 of file KDChartMeasure.cpp.

References instance(), and mFactors.

Referenced by KDChart::Chart::paint().

{
    // never remove the initial (1.0. 1.0) setting
    if( instance()->mFactors.count() > 1 )
        instance()->mFactors.pop();
}

void KDChart::GlobalMeasureScaling::setFactors	(	qreal	factorX,
		qreal	factorY
	)			[static]

Set new factors to be used by all Measure objects from now on.

Previous values will be stored.

Definition at line 210 of file KDChartMeasure.cpp.

References instance(), and mFactors.

Referenced by KDChart::Chart::paint().

{
    instance()->mFactors.push( qMakePair(factorX, factorY) );
}

void KDChart::GlobalMeasureScaling::setPaintDevice

(

QPaintDevice *

paintDevice

)

[static]

Sets the paint device usable for calculating fort metrics.

Definition at line 227 of file KDChartMeasure.cpp.

References instance(), and m_paintDevice.

Referenced by KDChart::Chart::paint().

{
    instance()->m_paintDevice = paintDevice;
}

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

• KDChartMeasure.h
• KDChartMeasure.cpp

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