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Update escpos-php

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Laurent Destailleur
2016-04-08 15:28:59 +02:00
parent e47c9946b2
commit 2f42a226d0
95 changed files with 252 additions and 6156 deletions
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71
htdocs/includes/mike42/escpos-php/example/print-from-pdf.php
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@@ -1,71 +0,0 @@
<?php
require_once(dirname(__FILE__) . '/../Escpos.php');
/*
* This is three examples in one:
* 1: Print an entire PDF, normal quality.
* 2: Print at a lower quality for speed increase (CPU & transfer)
* 3: Cache rendered documents for a speed increase (removes CPU image processing completely on subsequent prints)
*/
/* 1: Print an entire PDF, start-to-finish (shorter form of the example) */
$pdf = 'resources/document.pdf';
try {
$pages = EscposImage::loadPdf($pdf);
$printer = new Escpos();
foreach($pages as $page) {
$printer -> graphics($page);
}
$printer -> cut();
$printer -> close();
} catch(Exception $e) {
/*
* loadPdf() throws exceptions if files or not found, or you don't have the
* imagick extension to read PDF's
*/
echo $e -> getMessage() . "\n";
exit(0);
}
/*
* 2: Speed up printing by roughly halving the resolution, and printing double-size.
* This gives a 75% speed increase at the expense of some quality.
*
* Reduce the page width further if necessary: if it extends past the printing area, your prints will be very slow.
*/
$printer = new Escpos();
$pdf = 'resources/document.pdf';
$pages = EscposImage::loadPdf($pdf, 260);
foreach($pages as $page) {
$printer -> graphics($page, Escpos::IMG_DOUBLE_HEIGHT | Escpos::IMG_DOUBLE_WIDTH);
}
$printer -> cut();
$printer -> close();
/*
* 3: PDF printing still too slow? If you regularly print the same files, serialize & compress your
* EscposImage objects (after printing[1]), instead of throwing them away.
*
* (You can also do this to print logos on computers which don't have an
* image processing library, by preparing a serialized version of your logo on your PC)
*
* [1]After printing, the pixels are loaded and formatted for the print command you used, so even a raspberry pi can print complex PDF's quickly.
*/
$printer = new Escpos();
$pdf = 'resources/document.pdf';
$ser = 'resources/document.z';
if(!file_exists($ser)) {
$pages = EscposImage::loadPdf($pdf);
} else {
$pages = unserialize(gzuncompress(file_get_contents($ser)));
}
foreach($pages as $page) {
$printer -> graphics($page);
}
$printer -> cut();
$printer -> close();
if(!file_exists($ser)) {
file_put_contents($ser, gzcompress(serialize($pages)));
}