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Zeta Components Manual :: Docs For Class ezcGraphAxisRotatedLabelRenderer

Graph::ezcGraphAxisRotatedLabelRenderer

Class ezcGraphAxisRotatedLabelRenderer

Can render axis labels rotated, so that more axis labels fit on one axis.

Produces best results if the axis space was increased, so that more spcae is available below the axis.

$chart->xAxis->axisLabelRenderer = new ezcGraphAxisRotatedLabelRenderer();
// Define angle manually in degree
$chart->xAxis->axisLabelRenderer->angle = 45;
// Increase axis space
$chart->xAxis->axisSpace = .2;

Source for this file: /Graph/src/renderer/axis_label_rotated.php

ezcBaseOptions
   |
   --ezcGraphAxisLabelRenderer
      |
      --ezcGraphAxisRotatedLabelRenderer

Version:

//autogentag//

Descendants

Child Class	Description
ezcGraphAxisRotatedBoxedLabelRenderer	Can render axis labels rotated, so that more axis labels fit on one axis.

Properties

float

read/write


            $angle

Angle of labels on axis in degrees.

Member Variables

protected ezcGraphVector	`$direction` Store direction for later coordinate modifications
protected float	`$offset` Store coordinate offset for later coordinate modifications
protected array(ezcGraphStep)	`$steps` Store step array for later coordinate modifications
protected float	`$widthModifier` Store coordinate width modifier for later coordinate modifications

Inherited Member Variables

From ezcGraphAxisLabelRenderer
protected	`ezcGraphAxisLabelRenderer::$driver`
From ezcBaseOptions
protected	`ezcBaseOptions::$properties`

Method Summary

protected float	`calculateLabelLength( $start , $end , $xSpace , $ySpace , $axisBoundings )` Calculate general label length
protected float	`calculateLabelSize( $steps , $nr , $step , $xSpace , $ySpace , $axisBoundings )` Calculate label size
protected void	`determineAngle( $steps , $xSpace , $ySpace , $axisBoundings )` Determine label angle
protected float	`determineTextOffset( $axis , $steps )` Determine text offset.
public ezcGraphCoordinate	`modifyChartDataPosition( $coordinate )` Modify chart data position
public void	`renderLabels( $renderer , $boundings , $start , $end , $axis , [ $innerBoundings = null] )` Render Axis labels
protected void	`renderLabelText( $renderer , $axis , $position , $label , $degTextAngle , $labelLength , $labelSize , $lengthReducement )` Render label text.

Inherited Methods

From ezcGraphAxisLabelRenderer
public mixed	`ezcGraphAxisLabelRenderer::determineLineCuttingPoint()` Checks for the cutting point of two lines.
protected void	`ezcGraphAxisLabelRenderer::drawGrid()` Draw grid
protected void	`ezcGraphAxisLabelRenderer::drawNonRectangularGrid()` Draw non-rectangular grid lines grid
protected void	`ezcGraphAxisLabelRenderer::drawRectangularGrid()` Draw rectangular grid
public void	`ezcGraphAxisLabelRenderer::drawStep()` Draw single step on a axis
protected array	`ezcGraphAxisLabelRenderer::getAxisSpace()` Get axis space values
public ezcGraphBoundings	`ezcGraphAxisLabelRenderer::modifyChartBoundings()` Modify chart boundings
public ezcGraphCoordinate	`ezcGraphAxisLabelRenderer::modifyChartDataPosition()` Modify chart data position
public abstract void	`ezcGraphAxisLabelRenderer::renderLabels()` Render Axis labels
From ezcBaseOptions
public ezcBaseOptions	`ezcBaseOptions::__construct()` Construct a new options object.
public void	`ezcBaseOptions::merge()` Merge an array into the actual options object.
public bool	`ezcBaseOptions::offsetExists()` Returns if an option exists.
public mixed	`ezcBaseOptions::offsetGet()` Returns an option value.
public void	`ezcBaseOptions::offsetSet()` Set an option.
public void	`ezcBaseOptions::offsetUnset()` Unset an option.

Methods

calculateLabelLength

float calculateLabelLength( ezcGraphCoordinate $start , ezcGraphCoordinate $end , float $xSpace , float $ySpace , $axisBoundings )

Calculate general label length

Parameters:

Name	Type	Description
`$start`	ezcGraphCoordinate
`$end`	ezcGraphCoordinate
`$xSpace`	float
`$ySpace`	float
`$axisBoundings`	ezcGraphBoundings

calculateLabelSize

float calculateLabelSize( $steps , int $nr , array $step , float $xSpace , float $ySpace , $axisBoundings )

Calculate label size

Calculate the size of a single lable in a single step.

Parameters:

Name	Type	Description
`$steps`	array
`$nr`	int
`$step`	array
`$xSpace`	float
`$ySpace`	float
`$axisBoundings`	ezcGraphBoundings

determineAngle

void determineAngle( $steps , $xSpace , $ySpace , $axisBoundings )

Determine label angle

Determine the optiomal angle for the axis labels, of no angle has been provided by the user.

Parameters:

Name	Type	Description
`$steps`	array
`$xSpace`
`$ySpace`
`$axisBoundings`	ezcGraphBoundings

determineTextOffset

float determineTextOffset( ezcGraphChartElementAxis $axis , $steps )

Determine text offset.

Calculate the label offset and angle, from the configured or evaluated text angle.

Returns the text angle in degrees.

Parameters:

Name	Type	Description
`$axis`	ezcGraphChartElementAxis
`$steps`	array

modifyChartDataPosition

ezcGraphCoordinate modifyChartDataPosition( ezcGraphCoordinate $coordinate )

Modify chart data position

Optionally additionally modify the coodinate of a data point

Parameters:

Name	Type	Description
`$coordinate`	ezcGraphCoordinate	Data point coordinate

Redefinition of:

Method	Description
`ezcGraphAxisLabelRenderer::modifyChartDataPosition()`	Modify chart data position

Redefined in descendants as:

Method	Description
`ezcGraphAxisRotatedBoxedLabelRenderer::modifyChartDataPosition()`	Modify chart data position

renderLabels

void renderLabels( ezcGraphRenderer $renderer , $boundings , ezcGraphCoordinate $start , ezcGraphCoordinate $end , ezcGraphChartElementAxis $axis , [ $innerBoundings = null] )

Render Axis labels

Render labels for an axis.

Parameters:

Name	Type	Description
`$renderer`	ezcGraphRenderer	Renderer used to draw the chart
`$boundings`	ezcGraphBoundings	Boundings of the axis
`$start`	ezcGraphCoordinate	Axis starting point
`$end`	ezcGraphCoordinate	Axis ending point
`$axis`	ezcGraphChartElementAxis	Axis instance
`$innerBoundings`	ezcGraphBoundings

Redefinition of:

Method	Description
`ezcGraphAxisLabelRenderer::renderLabels()`	Render Axis labels

Redefined in descendants as:

Method	Description
`ezcGraphAxisRotatedBoxedLabelRenderer::renderLabels()`	Render Axis labels

renderLabelText

void renderLabelText( ezcGraphRenderer $renderer , ezcGraphChartElementAxis $axis , ezcGraphCoordinate $position , string $label , float $degTextAngle , float $labelLength , float $labelSize , float $lengthReducement )

Render label text.

Render the text of a single label, depending on the position, length and rotation of the label.

Parameters:

Name	Type	Description
`$renderer`	ezcGraphRenderer
`$axis`	ezcGraphChartElementAxis
`$position`	ezcGraphCoordinate
`$label`	string
`$degTextAngle`	float
`$labelLength`	float
`$labelSize`	float
`$lengthReducement`	float

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