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<?php |
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namespace nstdio\svg\filter; |
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use nstdio\svg\container\ContainerInterface; |
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use nstdio\svg\container\Defs; |
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use nstdio\svg\container\SVG; |
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use nstdio\svg\SVGElement; |
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use nstdio\svg\util\KeyValueWriter; |
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/** |
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* Class BaseFilter |
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* |
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* @property float x = "<coordinate>" The minimum x coordinate for the subregion which restricts |
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* calculation and rendering of the given filter primitive. |
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* @property float y = "<coordinate>" The minimum y coordinate for the subregion which restricts |
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* calculation and rendering of the given filter primitive. |
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* @property float width = "<length>" The width of the subregion which restricts calculation and |
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* rendering of the given filter primitive. See filter primitive subregion. A negative value is an error. A |
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* value of zero disables the effect of the given filter primitive (i.e., the result is a transparent black |
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* image). |
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* @property float height = "<length>" The height of the subregion which restricts calculation and rendering of |
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* the given filter primitive. See filter primitive subregion. A negative value is an error (see Error |
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* processing). A value of zero disables the effect of the given filter primitive (i.e., the result is a |
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* transparent black image). |
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* @property string result = "<filter-primitive-reference>" Assigned name for this filter primitive. If supplied, |
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* then graphics that result from processing this filter primitive can be referenced by an 'in' attribute on |
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* a subsequent filter primitive within the same 'filter' element. If no value is provided, the output will |
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* only be available for re-use as the implicit input into the next filter primitive if that filter primitive |
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* provides no value for its 'in' attribute. Note that a <filter-primitive-reference> is not an XML ID; |
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* instead, a <filter-primitive-reference> is only meaningful within a given 'filter' element and thus have |
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* only local scope. It is legal for the same <filter-primitive-reference> to appear multiple times within |
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* the same 'filter' element. When referenced, the <filter-primitive-reference> will use the closest |
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* preceding filter primitive with the given result. |
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* @property string in = "SourceGraphic | SourceAlpha | BackgroundImage | BackgroundAlpha | FillPaint | |
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* StrokePaint | <filter-primitive-reference>" Identifies input for the given filter primitive. The value can |
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* be either one of six keywords or can be a string which matches a previous 'result' attribute value within |
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* the same 'filter' element. If no value is provided and this is the first filter primitive, then this |
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* filter primitive will use SourceGraphic as its input. If no value is provided and this is a subsequent |
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* filter primitive, then this filter primitive will use the result from the previous filter primitive as its |
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* input. {@link https://www.w3.org/TR/SVG11/filters.html#FilterPrimitiveInAttribute} |
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* @package nstdio\svg\filter |
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* @author Edgar Asatryan <[email protected]> |
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*/ |
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abstract class BaseFilter extends SVGElement |
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{ |
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/** |
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* @param ContainerInterface $container |
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* @param $filterId |
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* |
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* @return Filter |
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*/ |
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protected static function defaultFilter(ContainerInterface $container, $filterId) |
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{ |
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return self::filterWithOptions($container, [ |
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'id' => $filterId, |
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'filterUnits' => 'objectBoundingBox', |
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'x' => '0%', |
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'y' => '0%', |
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'width' => '100%', |
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'height' => '100%', |
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]); |
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} |
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protected static function filterWithOptions(ContainerInterface $container, array $options) |
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{ |
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if ($container instanceof SVGElement) { |
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$defs = $container->getSVG()->getFirstChild(); |
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} elseif ($container instanceof SVG) { |
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$defs = $container->getFirstChild(); |
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} else { |
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$defs = new Defs($container); |
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} |
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$filter = new Filter($defs, $options['id']); |
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unset($options['id']); |
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KeyValueWriter::apply($filter->getElement(), $options); |
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return $filter; |
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} |
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} |
nstdio /
SVGMagick
