# QRMarkupSVG

Class `QRMarkupSVG`: Scalable Vector Graphics (SVG) output.

## Example

See: SVG example

Set the options:

    $options = new QROptions;

    $options->version              = 7;
    $options->outputInterface      = QRMarkupSVG::class;
    // if set to false, the light modules won't be rendered
    $options->drawLightModules     = true;
    $options->svgUseFillAttributes = true;
    // draw the modules as circles isntead of squares
    $options->drawCircularModules  = true;
    $options->circleRadius         = 0.4;
    // connect paths to avoid render glitches
    // @see https://github.com/chillerlan/php-qrcode/issues/57
    $options->connectPaths         = true;
    // keep modules of these types as square
    $options->keepAsSquare         = [
    	QRMatrix::M_FINDER_DARK,
    	QRMatrix::M_FINDER_DOT,
    	QRMatrix::M_ALIGNMENT_DARK,
    ];
    // add a gradient via the <defs> element
    // @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/defs
    // @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/linearGradient
    $options->svgDefs             = '
    	<linearGradient id="rainbow" x1="1" y2="1">
    		<stop stop-color="#e2453c" offset="0"/>
    		<stop stop-color="#e07e39" offset="0.2"/>
    		<stop stop-color="#e5d667" offset="0.4"/>
    		<stop stop-color="#51b95b" offset="0.6"/>
    		<stop stop-color="#1e72b7" offset="0.8"/>
    		<stop stop-color="#6f5ba7" offset="1"/>
    	</linearGradient>
    	<style><![CDATA[
    		.dark{fill: url(#rainbow);}
    		.light{fill: #eee;}
    	]]></style>';

Render the output:

    $data = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';
    $out  = (new QRCode($options))->render($data); // -> data:image/svg+xml;base64,PD94bWwgdmVyc2...

    printf('<img alt="%s" src="%s" />', $alt, $out);

## Additional methods

method | return | description
--- | --- | ---
(protected) `getCssClass(int $M_TYPE = 0)` | `string` | returns a string with all css classes for the current element
(protected) `getViewBox()` | `string` | returns the value for the SVG viewBox attribute
(protected) `header()` | `string` | returns the `<svg>` header with the given options parsed
(protected) `path(string $path, int $M_TYPE)` | `string` | renders and returns a single `<path>` element
(protected) `paths()` | `string` | returns one or more SVG `<path>` elements
(protected) `module(int $x, int $y, int $M_TYPE)` | `string` | returns a path segment for a single module

## Options that affect this class

property | type
--- | ---
`$circleRadius` | `float`
`$connectPaths` | `bool`
`$cssClass` | `string`
`$drawCircularModules` | `bool`
`$drawLightModules` | `bool`
`$eol` | `string`
`$excludeFromConnect` | `array`
`$keepAsSquare` | `array`
`$outputBase64` | `bool`
`$svgAddXmlHeader` | `bool`
`$svgDefs` | `string`
`$svgOpacity` | `float`
`$svgPreserveAspectRatio` | `string`
`$svgViewBoxSize` | `int|null`
`$svgUseFillAttributes` | `bool`