recreate project

vendor/mike42/escpos-php/example/print-from-html.php

@@ -0,0 +1,86 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+use Mike42\Escpos\Printer;
+use Mike42\Escpos\EscposImage;
+use Mike42\Escpos\PrintConnectors\FilePrintConnector;
+
+$connector = new FilePrintConnector("php://stdout"); // Add connector for your printer here.
+$printer = new Printer($connector);
+
+/*
+ * Due to its complxity, escpos-php does not support HTML input. To print HTML,
+ * either convert it to calls on the Printer() object, or rasterise the page with
+ * wkhtmltopdf, an external package which is designed to handle HTML efficiently.
+ *
+ * This example is provided to get you started: On Debian, first run-
+ * 
+ * sudo apt-get install wkhtmltopdf xvfb
+ *
+ * Note: Depending on the height of your pages, it is suggested that you chop it
+ * into smaller sections, as printers simply don't have the buffer capacity for
+ * very large images.
+ *
+ * As always, you can trade off quality for capacity by halving the width
+ * (550 -> 225 below) and printing w/ Escpos::IMG_DOUBLE_WIDTH | Escpos::IMG_DOUBLE_HEIGHT
+ */
+try {
+    /* Set up command */
+    $source = __DIR__ . "/resources/document.html";
+    $width = 550;
+    $dest = tempnam(sys_get_temp_dir(), 'escpos') . ".png";
+    $command = sprintf(
+        "xvfb-run wkhtmltoimage -n -q --width %s %s %s",
+        escapeshellarg($width),
+        escapeshellarg($source),
+        escapeshellarg($dest)
+    );
+
+    /* Test for dependencies */
+    foreach (array("xvfb-run", "wkhtmltoimage") as $cmd) {
+        $testCmd = sprintf("which %s", escapeshellarg($cmd));
+        exec($testCmd, $testOut, $testStatus);
+        if ($testStatus != 0) {
+            throw new Exception("You require $cmd but it could not be found");
+        }
+    }
+
+    
+    /* Run wkhtmltoimage */
+    $descriptors = array(
+            1 => array("pipe", "w"),
+            2 => array("pipe", "w"),
+    );
+    $process = proc_open($command, $descriptors, $fd);
+    if (is_resource($process)) {
+        /* Read stdout */
+        $outputStr = stream_get_contents($fd[1]);
+        fclose($fd[1]);
+        /* Read stderr */
+        $errorStr = stream_get_contents($fd[2]);
+        fclose($fd[2]);
+        /* Finish up */
+        $retval = proc_close($process);
+        if ($retval != 0) {
+            throw new Exception("Command $cmd failed: $outputStr $errorStr");
+        }
+    } else {
+        throw new Exception("Command '$cmd' failed to start.");
+    }
+
+    /* Load up the image */
+    try {
+        $img = EscposImage::load($dest);
+    } catch (Exception $e) {
+        unlink($dest);
+        throw $e;
+    }
+    unlink($dest);
+
+    /* Print it */
+    $printer -> bitImage($img); // bitImage() seems to allow larger images than graphics() on the TM-T20. bitImageColumnFormat() is another option.
+    $printer -> cut();
+} catch (Exception $e) {
+    echo $e -> getMessage();
+} finally {
+    $printer -> close();
+}