* $chart = new ezcGraphPieChart(); * $chart->data['example'] = new ezcGraphArrayDataSet( array( * 'Foo' => 23, * 'Bar' => 42, * ) ); * * $chart->background->image = 'background.png'; * * // Image would be repeated horizontal at the top of the background * $chart->background->repeat = ezcGraph::HORIZONTAL; * $chart->background->postion = ezcGraph::TOP; * * // Image would be placed once in the center * $chart->background->repeat = ezcGraph::NO_REPEAT; // default; * $chart->background->position = ezcGraph::CENTER | ezcGraph::MIDDLE; * * // Image would be repeated all over the chart, the position is irrelevant * $chart->background->repeat = ezcGraph::HORIZONTAL | ezcGraph::VERTICAL; * * $graph->render( 400, 250, 'legend.svg' ); * * * @property string $image * Filename of the file to use for background * @property int $repeat * Defines how the background image gets repeated * * @version //autogentag// * @package Graph * @mainclass */ class ezcGraphChartElementBackground extends ezcGraphChartElement { /** * Constructor * * @param array $options Default option array * @return void * @ignore */ public function __construct( array $options = array() ) { $this->properties['image'] = false; $this->properties['repeat'] = ezcGraph::NO_REPEAT; parent::__construct( $options ); } /** * __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 * @ignore */ public function __set( $propertyName, $propertyValue ) { switch ( $propertyName ) { case 'image': // 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->properties['image'] = $propertyValue; break; case 'repeat': if ( ( $propertyValue >= 0 ) && ( $propertyValue <= 3 ) ) { $this->properties['repeat'] = (int) $propertyValue; } else { throw new ezcBaseValueException( $propertyName, $propertyValue, '0 <= int <= 3' ); } break; case 'position': // Overwrite parent position setter, to be able to use // combination of positions like // ezcGraph::TOP | ezcGraph::CENTER if ( is_int( $propertyValue ) ) { $this->properties['position'] = $propertyValue; } else { throw new ezcBaseValueException( $propertyName, $propertyValue, 'integer' ); } break; case 'color': // Use color as an alias to set background color for background $this->__set( 'background', $propertyValue ); break; default: return parent::__set( $propertyName, $propertyValue ); } } /** * __get * * @param mixed $propertyName * @throws ezcBasePropertyNotFoundException * If a the value for the property options is not an instance of * @return mixed * @ignore */ public function __get( $propertyName ) { switch ( $propertyName ) { case 'color': // Use color as an alias to set background color for background return $this->properties['background']; default: return parent::__get( $propertyName ); } } /** * Set colors and border for this element * * Method is overwritten because we do not ant to apply the global padding * and margin here. * * @param ezcGraphPalette $palette Palette * @return void */ public function setFromPalette( ezcGraphPalette $palette ) { $this->border = $palette->chartBorderColor; $this->borderWidth = $palette->chartBorderWidth; $this->background = $palette->chartBackground; $this->padding = 0; $this->margin = 0; } /** * Render the background * * @param ezcGraphRenderer $renderer Renderer * @param ezcGraphBoundings $boundings Boundings * @return ezcGraphBoundings Remaining boundings */ public function render( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings ) { $boundings = $renderer->drawBox( $boundings, $this->background, $this->border, $this->borderWidth, $this->margin, $this->padding ); if ( $this->image === false ) { return $boundings; } $renderer->drawBackgroundImage( $boundings, $this->image, $this->position, $this->repeat ); return $boundings; } } ?>