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<?php
/**
* File containing the abstract ezcGraphChartElementAxis class
*
* @package Graph
* @version //autogentag//
* @copyright Copyright (C) 2005, 2006 eZ systems as. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
*/
/**
* Class to represent a legend as a chart element
*
* @package Graph
*/
abstract class ezcGraphChartElementAxis extends ezcGraphChartElement
{
/**
* The position of the null value
*
* @var float
*/
protected $nullPosition;
/**
* Percent of the chart space used to display axis labels and arrowheads
* instead of data values
*
* @var float
*/
protected $axisSpace = .1;
/**
* Padding between labels and axis in pixel
*
* @var integer
*/
protected $labelPadding = 2;
/**
* Color of major majorGrid
*
* @var ezcGraphColor
*/
protected $majorGrid;
/**
* Color of minor majorGrid
*
* @var ezcGraphColor
*/
protected $minorGrid;
/**
* Labeled major steps displayed on the axis
*
* @var float
*/
protected $majorStep = false;
/**
* Non labeled minor steps on the axis
*
* @var mixed
* @access protected
*/
protected $minorStep = false;
/**
* Formatstring to use for labeling og the axis
*
* @var string
*/
protected $formatString = '%s';
/**
* Maximum Size used to draw arrow heads
*
* @var integer
*/
protected $maxArrowHeadSize = 8;
/**
* Axis label renderer class
*
* @var ezcGraphAxisLabelRenderer
*/
protected $axisLabelRenderer;
public function __construct( array $options = array() )
{
$this->axisLabelRenderer = new ezcGraphAxisExactLabelRenderer();
parent::__construct( $options );
}
/**
* Set colors and border fro this element
*
* @param ezcGraphPalette $palette Palette
* @return void
*/
public function setFromPalette( ezcGraphPalette $palette )
{
$this->border = $palette->axisColor;
$this->padding = $palette->padding;
$this->margin = $palette->margin;
$this->majorGrid = $palette->majorGridColor;
$this->minorGrid = $palette->minorGridColor;
}
/**
* __set
*
* @param mixed $propertyName
* @param mixed $propertyValue
* @throws ezcBaseValueException
* If a submitted parameter was out of range or type.
* @throws ezcBasePropertyNotFoundException
* If a the value for the property options is not an instance of
* @return void
*/
public function __set( $propertyName, $propertyValue )
{
switch ( $propertyName )
{
case 'nullPosition':
$this->nullPosition = (float) $propertyValue;
break;
case 'axisSpace':
$this->axisSpace = min( 1, max( 0, (float) $propertyValue ) );
break;
case 'labelPadding':
$this->labelPadding = min( 0, max( 0, (float) $propertyValue ) );
break;
case 'majorGrid':
if ( $propertyValue instanceof ezcGraphColor )
{
$this->majorGrid = $propertyValue;
}
else
{
$this->majorGrid = ezcGraphColor::create( $propertyValue );
}
break;
case 'minorGrid':
if ( $propertyValue instanceof ezcGraphColor )
{
$this->minorGrid = $propertyValue;
}
else
{
$this->minorGrid = ezcGraphColor::create( $propertyValue );
}
break;
case 'majorStep':
if ( $propertyValue <= 0 )
{
throw new ezcBaseValueException( 'majorStep', $propertyValue, 'float > 0' );
}
$this->majorStep = (float) $propertyValue;
break;
case 'minorStep':
if ( $propertyValue <= 0 )
{
throw new ezcBaseValueException( 'minorStep', $propertyValue, 'float > 0' );
}
$this->minorStep = (float) $propertyValue;
break;
case 'formatString':
$this->formatString = (string) $propertyValue;
break;
case 'maxArrowHeadSize':
$this->maxArrowHeadSize = max( 0, (int) $propertyValue );
break;
case 'axisLabelRenderer':
if ( $propertyValue instanceof ezcGraphAxisLabelRenderer )
{
$this->axisLabelRenderer = $propertyValue;
}
else
{
throw new ezcBasePropertyNotFoundException( $propertyName );
}
break;
default:
parent::__set( $propertyName, $propertyValue );
break;
}
}
/**
* Get coordinate for a dedicated value on the chart
*
* @param float $value Value to determine position for
* @return float Position on chart
*/
abstract public function getCoordinate( $value );
/**
* Return count of minor steps
*
* @return integer Count of minor steps
*/
abstract protected function getMinorStepCount();
/**
* Return count of major steps
*
* @return integer Count of major steps
*/
abstract protected function getMajorStepCount();
/**
* Get label for a dedicated step on the axis
*
* @param integer $step Number of step
* @return string label
*/
abstract protected function getLabel( $step );
/**
* Add data for this axis
*
* @param mixed $value Value which will be displayed on this axis
* @return void
*/
abstract public function addData( array $values );
/**
* Calculate axis bounding values on base of the assigned values
*
* @abstract
* @access public
* @return void
*/
abstract public function calculateAxisBoundings();
/**
* Render an axe
*
* @param ezcGraphRenderer $renderer
* @access public
* @return void
*/
public function render( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings )
{
switch ( $this->position )
{
case ezcGraph::TOP:
$start = new ezcGraphCoordinate(
( $boundings->x1 - $boundings->x0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->x1 - $boundings->x0 ) * ( 1 - 2 * $this->axisSpace ),
0
);
$end = new ezcGraphCoordinate(
( $boundings->x1 - $boundings->x0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->x1 - $boundings->x0 ) * ( 1 - 2 * $this->axisSpace ),
$boundings->y1 - $boundings->y0
);
break;
case ezcGraph::BOTTOM:
$start = new ezcGraphCoordinate(
( $boundings->x1 - $boundings->x0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->x1 - $boundings->x0 ) * ( 1 - 2 * $this->axisSpace ),
$boundings->y1 - $boundings->y0
);
$end = new ezcGraphCoordinate(
( $boundings->x1 - $boundings->x0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->x1 - $boundings->x0 ) * ( 1 - 2 * $this->axisSpace ),
0
);
break;
case ezcGraph::LEFT:
$start = new ezcGraphCoordinate(
0,
( $boundings->y1 - $boundings->y0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->y1 - $boundings->y0 ) * ( 1 - 2 * $this->axisSpace )
);
$end = new ezcGraphCoordinate(
$boundings->x1 - $boundings->x0,
( $boundings->y1 - $boundings->y0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->y1 - $boundings->y0 ) * ( 1 - 2 * $this->axisSpace )
);
break;
case ezcGraph::RIGHT:
$start = new ezcGraphCoordinate(
$boundings->x1 - $boundings->x0,
( $boundings->y1 - $boundings->y0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->y1 - $boundings->y0 ) * ( 1 - 2 * $this->axisSpace )
);
$end = new ezcGraphCoordinate(
0,
( $boundings->y1 - $boundings->y0 ) * $this->axisSpace +
$this->nullPosition * ( $boundings->y1 - $boundings->y0 ) * ( 1 - 2 * $this->axisSpace )
);
break;
}
$renderer->drawAxis(
$boundings,
$start,
$end,
$this,
$this->axisLabelRenderer
);
return $boundings;
}
}
?>
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