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+<?php
+//============================================================+
+// File name   : example_042.php
+// Begin       : 2008-12-23
+// Last Update : 2013-05-14
+//
+// Description : Example 042 for TCPDF class
+//               Test Image with alpha channel
+//
+// Author: Nicola Asuni
+//
+// (c) Copyright:
+//               Nicola Asuni
+//               Tecnick.com LTD
+//               www.tecnick.com
+//               info@tecnick.com
+//============================================================+
+
+/**
+ * Creates an example PDF TEST document using TCPDF
+ * @package com.tecnick.tcpdf
+ * @abstract TCPDF - Example: Test Image with alpha channel
+ * @author Nicola Asuni
+ * @since 2008-12-23
+ */
+
+// Include the main TCPDF library (search for installation path).
+require_once('tcpdf_include.php');
+
+// create new PDF document
+$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
+
+// set document information
+$pdf->SetCreator(PDF_CREATOR);
+$pdf->SetAuthor('Nicola Asuni');
+$pdf->SetTitle('TCPDF Example 042');
+$pdf->SetSubject('TCPDF Tutorial');
+$pdf->SetKeywords('TCPDF, PDF, example, test, guide');
+
+// set default header data
+$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE.' 042', PDF_HEADER_STRING);
+
+// set header and footer fonts
+$pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN));
+$pdf->setFooterFont(Array(PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA));
+
+// set default monospaced font
+$pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
+
+// set margins
+$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
+$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
+$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);
+
+// set auto page breaks
+$pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);
+
+// set image scale factor
+$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
+
+// set some language-dependent strings (optional)
+if (@file_exists(dirname(__FILE__).'/lang/eng.php')) {
+	require_once(dirname(__FILE__).'/lang/eng.php');
+	$pdf->setLanguageArray($l);
+}
+
+// ---------------------------------------------------------
+
+// set JPEG quality
+//$pdf->setJPEGQuality(75);
+
+$pdf->SetFont('helvetica', '', 18);
+
+// add a page
+$pdf->AddPage();
+
+// create background text
+$background_text = str_repeat('TCPDF test PNG Alpha Channel ', 50);
+$pdf->MultiCell(0, 5, $background_text, 0, 'J', 0, 2, '', '', true, 0, false);
+
+// --- Method (A) ------------------------------------------
+// the Image() method recognizes the alpha channel embedded on the image:
+
+$pdf->Image('images/image_with_alpha.png', 50, 50, 100, '', '', 'http://www.tcpdf.org', '', false, 300);
+
+// --- Method (B) ------------------------------------------
+// provide image + separate 8-bit mask
+
+// first embed mask image (w, h, x and y will be ignored, the image will be scaled to the target image's size)
+$mask = $pdf->Image('images/alpha.png', 50, 140, 100, '', '', '', '', false, 300, '', true);
+
+// embed image, masked with previously embedded mask
+$pdf->Image('images/img.png', 50, 140, 100, '', '', 'http://www.tcpdf.org', '', false, 300, '', false, $mask);
+
+// ---------------------------------------------------------
+
+//Close and output PDF document
+$pdf->Output('example_042.pdf', 'I');
+
+//============================================================+
+// END OF FILE
+//============================================================+