KChart::AbstractGrid Class Reference

#include <KChartAbstractGrid.h>

Inheritance diagram for KChart::AbstractGrid:

Public Member Functions
virtual void	drawGrid (PaintContext *context)=0
void	setNeedRecalculate ()
DataDimensionsList	updateData (AbstractCoordinatePlane *plane)

Static Public Member Functions
static const DataDimension	adjustedLowerUpperRange (const DataDimension &dim, bool adjustLower, bool adjustUpper)
static void	adjustLowerUpperRange (qreal &start, qreal &end, qreal stepWidth, bool adjustLower, bool adjustUpper)
static bool	isBoundariesValid (const DataDimensionsList &l)
static bool	isBoundariesValid (const QPair< QPointF, QPointF > &b)
static bool	isBoundariesValid (const QRectF &r)
static bool	isValueValid (const qreal &r)

Public Attributes
GridAttributes	gridAttributes

Protected Attributes
DataDimensionsList	mDataDimensions
AbstractCoordinatePlane *	mPlane

Detailed Description

Abstract base class for grid classes: cartesian, polar, ...

The AbstractGrid interface is the base class used by AbstractCoordinatePlane, for calculating and for drawing the grid lines of the plane.

Definition at line 33 of file KChartAbstractGrid.h.

Constructor & Destructor Documentation

~AbstractGrid()

AbstractGrid::~AbstractGrid ( )

virtual

Definition at line 33 of file KChartAbstractGrid.cpp.

AbstractGrid()

AbstractGrid::AbstractGrid ( )

protected

Definition at line 27 of file KChartAbstractGrid.cpp.

Member Function Documentation

adjustedLowerUpperRange()

const DataDimension AbstractGrid::adjustedLowerUpperRange ( const DataDimension & dim, bool adjustLower, bool adjustUpper )

static

Adjusts dim so that dim.start and/or dim.end are a multiple of dim.stepWidth.

See also

adjustLowerUpperRange

Definition at line 95 of file KChartAbstractGrid.cpp.

adjustLowerUpperRange()

void AbstractGrid::adjustLowerUpperRange ( qreal & start, qreal & end, qreal stepWidth, bool adjustLower, bool adjustUpper )

static

Adjusts start and/or end so that they are a multiple of stepWidth.

Definition at line 82 of file KChartAbstractGrid.cpp.

drawGrid()

virtual void KChart::AbstractGrid::drawGrid ( PaintContext * context )

pure virtual

Doing the actual drawing.

Every derived class must implement this.

Note

When implementing drawGrid(): Before you start drawing, make sure to call updateData(), to get the data boundaries recalculated. For an example, see the implementation of CartesianGrid:drawGrid().

Implemented in KChart::CartesianGrid, KChart::LeveyJenningsGrid, KChart::PolarGrid, and KChart::RadarGrid.

isBoundariesValid() [1/3]

bool AbstractGrid::isBoundariesValid ( const DataDimensionsList & l )

static

Checks whether all start and end properties of every DataDimension in the list l are valid according to isValueValid().

See also

isValueValid

Definition at line 69 of file KChartAbstractGrid.cpp.

isBoundariesValid() [2/3]

bool AbstractGrid::isBoundariesValid ( const QPair< QPointF, QPointF > & b )

static

Checks whether both coordinates of both points are valid according to isValueValid.

See also

isValueValid

Definition at line 63 of file KChartAbstractGrid.cpp.

isBoundariesValid() [3/3]

bool AbstractGrid::isBoundariesValid ( const QRectF & r )

static

Checks whether both coordinates of r are valid according to isValueValid.

See also

isValueValid

Definition at line 58 of file KChartAbstractGrid.cpp.

isValueValid()

bool AbstractGrid::isValueValid ( const qreal & r )

static

Checks if r is neither NaN nor infinity.

Definition at line 77 of file KChartAbstractGrid.cpp.

setNeedRecalculate()

void AbstractGrid::setNeedRecalculate

(

)

Causes grid to be recalculated upon the next call of updateData().

See also

calculateGrid

Definition at line 38 of file KChartAbstractGrid.cpp.

updateData()

DataDimensionsList AbstractGrid::updateData

(

AbstractCoordinatePlane *

plane

)

Returns the cached result of data calculation.

For this, all derived classes need to implement the pure-virtual calculateGrid() method.

Definition at line 43 of file KChartAbstractGrid.cpp.

Member Data Documentation

gridAttributes

GridAttributes KChart::AbstractGrid::gridAttributes

Definition at line 118 of file KChartAbstractGrid.h.

mDataDimensions

DataDimensionsList KChart::AbstractGrid::mDataDimensions

protected

Definition at line 121 of file KChartAbstractGrid.h.

mPlane

AbstractCoordinatePlane* KChart::AbstractGrid::mPlane

protected

Definition at line 122 of file KChartAbstractGrid.h.

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

• KChartAbstractGrid.h
• KChartAbstractGrid.cpp