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<?php
/**
* File containing the ezcGraphOdometerChart class
*
* @package Graph
* @version 1.1
* @copyright Copyright (C) 2005-2007 eZ systems as. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
*/
class ezcGraphOdometerChart extends ezcGraphChart
{
/**
* Constructor
*
* @param array $options Default option array
* @return void
* @ignore
*/
public function __construct( array $options = array() )
{
$this->options = new ezcGraphOdometerChartOptions( $options );
parent::__construct( $options );
$this->data = new ezcGraphChartSingleDataContainer( $this );
$this->addElement( 'axis', new ezcGraphChartElementNumericAxis());
$this->elements['axis']->axisLabelRenderer = new ezcGraphAxisCenteredLabelRenderer();
$this->elements['axis']->position = ezcGraph::LEFT;
$this->elements['axis']->axisSpace = .05;
}
/**
* Render the assigned data
*
* Will renderer all charts data in the remaining boundings after drawing
* all other chart elements. The data will be rendered depending on the
* settings in the dataset.
*
* @param ezcGraphRenderer $renderer Renderer
* @param ezcGraphBoundings $boundings Remaining boundings
* @return void
*/
protected function renderData( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings )
{
// Draw the odometer data
$dataset = $this->data->rewind();
foreach ( $dataset as $key => $value )
{
$renderer->drawOdometerMarker(
$boundings,
$this->elements['axis']->axisLabelRenderer->modifyChartDataPosition(
new ezcGraphCoordinate(
$this->elements['axis']->getCoordinate( $value ),
0
)
),
$dataset->symbol[$key],
$dataset->color[$key],
$this->options->markerWidth
);
}
}
/**
* Returns the default display type of the current chart type.
*
* @return int Display type
*/
public function getDefaultDisplayType()
{
return ezcGraph::ODOMETER;
}
/**
* Renders the basic elements of this chart type
*
* @param int $width
* @param int $height
* @return void
*/
protected function renderElements( $width, $height )
{
if ( !count( $this->data ) )
{
throw new ezcGraphNoDataException();
}
// Set image properties in driver
$this->driver->options->width = $width;
$this->driver->options->height = $height;
// no legend
$this->renderElement['legend'] = false;
// Get boundings from parameters
$this->options->width = $width;
$this->options->height = $height;
$boundings = new ezcGraphBoundings();
$boundings->x1 = $this->options->width;
$boundings->y1 = $this->options->height;
// Get values out the single used dataset to calculate axis boundings
$values = array();
foreach( $this->data->rewind() as $value )
{
$values[] = $value;
}
// Set values for Axis
$this->elements['axis']->addData( $values );
$this->elements['axis']->nullPosition = 0.5 + $this->options->odometerHeight / 2;
$this->elements['axis']->calculateAxisBoundings();
// Render subelements exept axis, which will be drawn together with the
// odometer bar
foreach ( $this->elements as $name => $element )
{
// Skip element, if it should not get rendered
if ( $this->renderElement[$name] === false ||
$name === 'axis' )
{
continue;
}
$this->driver->options->font = $element->font;
$boundings = $element->render( $this->renderer, $boundings );
}
// Draw basic odometer
$this->driver->options->font = $this->elements['axis']->font;
$boundings = $this->renderer->drawOdometer(
$boundings,
$this->elements['axis'],
$this->options
);
// Render graph
$this->renderData( $this->renderer, $boundings );
}
/**
* Render the pie chart
*
* Renders the chart into a file or stream. The width and height are
* needed to specify the dimensions of the resulting image. For direct
* output use 'php://stdout' as output file.
*
* @param int $width Image width
* @param int $height Image height
* @param string $file Output file
* @apichange
* @return void
*/
public function render( $width, $height, $file = null )
{
$this->renderElements( $width, $height );
if ( !empty( $file ) )
{
$this->renderer->render( $file );
}
$this->renderedFile = $file;
}
/**
* Renders this chart to direct output
*
* Does the same as ezcGraphChart::render(), but renders directly to
* output and not into a file.
*
* @param int $width
* @param int $height
* @apichange
* @return void
*/
public function renderToOutput( $width, $height )
{
// @TODO: merge this function with render an deprecate ommit of third
// argument in render() when API break is possible
$this->renderElements( $width, $height );
$this->renderer->render( null );
}
}
?>
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