# QRFpdf

Class `QRFpdf`: Portable Document Format (PDF) output via FPDF.

## Example

See: FPDF example

Set the options:

    $options = new QROptions;

    $options->outputInterface  = QRFpdf::class;
    $options->scale            = 5;
    $options->fpdfMeasureUnit  = 'mm'; // pt, mm, cm, in
    $options->bgColor          = [222, 222, 222]; // [R, G, B]
    $options->drawLightModules = false;
    $options->moduleValues     = [
    	QRMatrix::M_FINDER_DARK    => [0, 63, 255],    // dark (true)
    	QRMatrix::M_FINDER_DOT     => [0, 63, 255],    // finder dot, dark (true)
    	QRMatrix::M_FINDER         => [255, 255, 255], // light (false)
    	QRMatrix::M_ALIGNMENT_DARK => [255, 0, 255],
    	QRMatrix::M_ALIGNMENT      => [255, 255, 255],
    	QRMatrix::M_DATA_DARK      => [0, 0, 0],
    	QRMatrix::M_DATA           => [255, 255, 255],
    ];

Render the output:

    $data = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';
    $out  = (new QRCode($options))->render($data); // -> data:application/pdf;base64,...

    echo $out;

Return the `FPDF` instance (will ignore other output options):

    $options->returnResource = true;

    /** @var \FPDF $fpdf */
    $fpdf = (new QRCode($options))->render($data);

    // do stuff with the FPDF instance...

    // ...dump output
    header('application/pdf');

    echo $fpdf->Output('S');

## Additional methods

method | return | description
--- | --- | ---
(protected) `initFPDF()` | `FPDF` | Initializes an FPDF instance
(protected) `module(int $x, int $y, int $M_TYPE)` | `void` | Renders a single module

## Options that affect this module

property | type
--- | ---
`$bgColor` | `array`
`$drawLightModules` | `bool`
`$fpdfMeasureUnit` | `string`
`$outputBase64` | `bool`
`$returnResource` | `bool`
`$scale` | `ìnt`