* $graph = new ezcGraphPieChart(); * $graph->data['example'] = new ezcGraphArrayDataSet( array( * 'Foo' => 23, * 'Bar' => 42, * ) ); * * // Set a title and format the title element * $graph->title = 'Example formatted pie chart'; * $graph->title->margin = 2; * $graph->title->background = '#FFFFFF80'; * $graph->title->border = '#FFFFFF'; * $graph->title->borderWidth = 1; * $graph->title->margin = 1; * $graph->title->padding = 1; * * // Format the legend element * $graph->legend->margin = 2; * $graph->legend->background = '#FFFFFF80'; * $graph->legend->border = '#FFFFFF'; * $graph->legend->borderWidth = 1; * $graph->legend->margin = 1; * $graph->legend->padding = 1; * * $graph->background->background = '#888a85'; * * $graph->render( 400, 250, 'element.svg' ); * * * @property string $title * Title of chart element. * @property ezcGraphColor $background * Background color of chart element. * @property ezcGraphColor $border * Border color of chart element. * @property int $padding * Distance between border and content of element. * @property int $margin * Distance between outer boundings and border of an element. * @property int $borderWidth * Border width. * @property int $position * Integer defining the elements position in the chart. * @property int $maxTitleHeight * Maximum size of the title. * @property float $portraitTitleSize * Percentage of boundings which are used for the title with * position left, right or center. * @property float $landscapeTitleSize * Percentage of boundings which are used for the title with * position top or bottom. * @property ezcGraphFontOptions $font * Font used for this element. * @property-read bool $fontCloned * Indicates if font configuration was already cloned for this * specific element. * @property-read ezcGraphBoundings $boundings * Boundings of this elements. * * @version 1.5 * @package Graph */ abstract class ezcGraphChartElement extends ezcBaseOptions { /** * Constructor * * @param array $options Default option array * @return void * @ignore */ public function __construct( array $options = array() ) { $this->properties['title'] = false; $this->properties['background'] = false; $this->properties['boundings'] = new ezcGraphBoundings(); $this->properties['border'] = false; $this->properties['borderWidth'] = 0; $this->properties['padding'] = 0; $this->properties['margin'] = 0; $this->properties['position'] = ezcGraph::LEFT; $this->properties['maxTitleHeight'] = 16; $this->properties['portraitTitleSize'] = .15; $this->properties['landscapeTitleSize'] = .2; $this->properties['font'] = new ezcGraphFontOptions(); $this->properties['fontCloned'] = false; parent::__construct( $options ); } /** * Set colors and border fro this element * * @param ezcGraphPalette $palette Palette * @return void */ public function setFromPalette( ezcGraphPalette $palette ) { $this->properties['border'] = $palette->elementBorderColor; $this->properties['borderWidth'] = $palette->elementBorderWidth; $this->properties['background'] = $palette->elementBackground; $this->properties['padding'] = $palette->padding; $this->properties['margin'] = $palette->margin; } /** * __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 'title': $this->properties['title'] = (string) $propertyValue; break; case 'background': $this->properties['background'] = ezcGraphColor::create( $propertyValue ); break; case 'border': $this->properties['border'] = ezcGraphColor::create( $propertyValue ); break; case 'padding': if ( !is_numeric( $propertyValue ) || ( $propertyValue < 0 ) ) { throw new ezcBaseValueException( $propertyName, $propertyValue, 'int >= 0' ); } $this->properties['padding'] = (int) $propertyValue; break; case 'margin': if ( !is_numeric( $propertyValue ) || ( $propertyValue < 0 ) ) { throw new ezcBaseValueException( $propertyName, $propertyValue, 'int >= 0' ); } $this->properties['margin'] = (int) $propertyValue; break; case 'borderWidth': if ( !is_numeric( $propertyValue ) || ( $propertyValue < 0 ) ) { throw new ezcBaseValueException( $propertyName, $propertyValue, 'int >= 0' ); } $this->properties['borderWidth'] = (int) $propertyValue; break; case 'font': if ( $propertyValue instanceof ezcGraphFontOptions ) { $this->properties['font'] = $propertyValue; } elseif ( is_string( $propertyValue ) ) { if ( !$this->fontCloned ) { $this->properties['font'] = clone $this->font; $this->properties['fontCloned'] = true; } $this->properties['font']->path = $propertyValue; } else { throw new ezcBaseValueException( $propertyName, $propertyValue, 'ezcGraphFontOptions' ); } break; case 'position': $positions = array( ezcGraph::TOP, ezcGraph::BOTTOM, ezcGraph::LEFT, ezcGraph::RIGHT, ); if ( in_array( $propertyValue, $positions, true ) ) { $this->properties['position'] = $propertyValue; } else { throw new ezcBaseValueException( 'position', $propertyValue, 'integer' ); } break; case 'maxTitleHeight': if ( !is_numeric( $propertyValue ) || ( $propertyValue < 0 ) ) { throw new ezcBaseValueException( $propertyName, $propertyValue, 'int >= 0' ); } $this->properties['maxTitleHeight'] = (int) $propertyValue; break; case 'portraitTitleSize': if ( !is_numeric( $propertyValue ) || ( $propertyValue < 0 ) || ( $propertyValue > 1 ) ) { throw new ezcBaseValueException( $propertyName, $propertyValue, '0 <= float <= 1' ); } $this->properties['portraitTitleSize'] = (float) $propertyValue; break; case 'landscapeTitleSize': if ( !is_numeric( $propertyValue ) || ( $propertyValue < 0 ) || ( $propertyValue > 1 ) ) { throw new ezcBaseValueException( $propertyName, $propertyValue, '0 <= float <= 1' ); } $this->properties['landscapeTitleSize'] = (float) $propertyValue; break; default: throw new ezcBasePropertyNotFoundException( $propertyName ); break; } } /** * __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 ( $propertyName ) { case 'font': // Clone font configuration when requested for this element if ( !$this->fontCloned ) { $this->properties['font'] = clone $this->properties['font']; $this->properties['fontCloned'] = true; } return $this->properties['font']; default: return parent::__get( $propertyName ); } } /** * Renders this chart element * * This method receives and returns a part of the canvas where it can be * rendered on. * * @param ezcGraphRenderer $renderer * @param ezcGraphBoundings $boundings * @return ezcGraphBoundings Part of canvas, which is still free to draw on */ abstract public function render( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings ); /** * Returns calculated boundings based on available percentual space of * given bounding box specified in the elements options and direction of * the box. * * @param ezcGraphBoundings $boundings * @param int $direction * @return ezcGraphBoundings */ protected function getTitleSize( ezcGraphBoundings $boundings, $direction = ezcGraph::HORIZONTAL ) { if ( $direction === ezcGraph::HORIZONTAL ) { return min( $this->maxTitleHeight, ( $boundings->y1 - $boundings->y0 ) * $this->landscapeTitleSize ); } else { return min( $this->maxTitleHeight, ( $boundings->y1 - $boundings->y0 ) * $this->portraitTitleSize ); } } } ?>