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<?php
/**
* File containing the abstract ezcGraphChartElementText 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
*/
class ezcGraphChartElementBackgroundImage extends ezcGraphChartElement
{
/**
* Filename of the file to use for background
*
* @var string
*/
protected $source = '';
/**
* __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 'source':
// Check for existance of file
if ( !is_file( $propertyValue ) || !is_readable( $propertyValue ) )
{
throw new ezcBaseFileNotFoundException( $propertyValue );
}
// Check for beeing an image file
$data = getImageSize( $propertyValue );
if ( $data === false )
{
throw new ezcGraphInvalidImageFileException( $propertyValue );
}
// SWF files are useless..
if ( $data[2] === 4 )
{
throw new ezcGraphInvalidImageFileException( 'We cant use SWF files like <' . $propertyValue . '>.' );
}
$this->source = $propertyValue;
break;
case 'position':
$this->position = (int) $propertyValue;
break;
default:
return parent::__set( $propertyName, $propertyValue );
}
}
/**
* Render a legend
*
* @param ezcGraphRenderer $renderer
* @access public
* @return void
*/
public function render( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings )
{
if ( empty( $this->source ) )
{
return $boundings;
}
// Get background image boundings
$data = getimagesize( $this->source );
// Determine x position
switch ( true )
{
case ( $this->position & ezcGraph::LEFT ):
$xPosition = 0;
break;
case ( $this->position & ezcGraph::RIGHT ):
$xPosition = $boundings->x1 - $data[0];
break;
case ( $this->position & ezcGraph::CENTER ):
default:
$xPosition = (int) round( ( $boundings->x1 - $data[0] ) / 2 );
break;
}
// Determine y position
switch ( true )
{
case ( $this->position & ezcGraph::TOP ):
$yPosition = 0;
break;
case ( $this->position & ezcGraph::BOTTOM ):
$yPosition = $boundings->y1 - $data[1];
break;
case ( $this->position & ezcGraph::MIDDLE ):
default:
$yPosition = (int) round( ( $boundings->y1 - $data[1] ) / 2 );
break;
}
$renderer->drawBackgroundImage(
$this->source,
new ezcGraphCoordinate( $xPosition, $yPosition ),
$data[0],
$data[1]
);
return $boundings;
}
}
?>
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