SetAlpha()

(mPDF ≥ 1.0)

SetAlpha – Set the opacity for Images

Description

void SetAlpha ( float $alpha [, string $blend ])

Set the opacity and blend mode for Images

Parameters

$alpha

This parameter specifies the opacity for any subsequent images written to the current document.

Values

Float: 0 (transparent) to 1 (opaque)

$blend

This parameter specifies the blend mode.

Values

One of the following strings:

• 'Normal'
• 'Multiply'
• 'Screen'
• 'Overlay'
• 'Darken'
• 'Lighten'
• 'ColorDodge'
• 'ColorBurn'
• 'HardLight'
• 'SoftLight'
• 'Difference'
• 'Exclusion'
• 'Hue'
• 'Saturation'
• 'Color'
• 'Luminosity'

Default: 'Normal'

Changelog

Examples

Example #1

<?php
// Require composer autoload
require_once __DIR__ . '/vendor/autoload.php';
$mpdf = new \Mpdf\Mpdf();

$mpdf->SetAlpha(0.5);
$mpdf->WriteHTML('<img src="clematis.jpg" />');
$mpdf->SetAlpha(1);

// This produces the identical result as the last 3 lines
// $mpdf->WriteHTML('<img src="clematis.jpg" opacity="0.5" />');

$mpdf->Output();
exit;

See Also

• Image() - Write an image to the current document