81 lines
2.5 KiB
PHP
81 lines
2.5 KiB
PHP
<?php
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require __DIR__ . '/../vendor/autoload.php';
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use Zelda\EscposPhp\Printer;
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use Zelda\EscposPhp\ImagickEscposImage;
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use Zelda\EscposPhp\PrintConnectors\FilePrintConnector;
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/*
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* This is three examples in one:
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* 1: Print an entire PDF, normal quality.
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* 2: Print at a lower quality for speed increase (CPU & transfer)
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* 3: Cache rendered documents for a speed increase (removes CPU image processing completely on subsequent prints)
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*/
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/* 1: Print an entire PDF, start-to-finish (shorter form of the example) */
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$pdf = 'resources/document.pdf';
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$connector = new FilePrintConnector("php://stdout");
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$printer = new Printer($connector);
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try {
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$pages = ImagickEscposImage::loadPdf($pdf);
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foreach ($pages as $page) {
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$printer->graphics($page);
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}
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$printer->cut();
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} catch (Exception $e) {
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/*
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* loadPdf() throws exceptions if files or not found, or you don't have the
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* imagick extension to read PDF's
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*/
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echo $e->getMessage() . "\n";
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} finally {
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$printer->close();
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}
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/*
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* 2: Speed up printing by roughly halving the resolution, and printing double-size.
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* This gives a 75% speed increase at the expense of some quality.
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*
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* Reduce the page width further if necessary: if it extends past the printing area, your prints will be very slow.
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*/
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$connector = new FilePrintConnector("php://stdout");
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$printer = new Printer($connector);
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$pdf = 'resources/document.pdf';
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$pages = ImagickEscposImage::loadPdf($pdf, 260);
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foreach ($pages as $page) {
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$printer->graphics($page, Printer::IMG_DOUBLE_HEIGHT | Printer::IMG_DOUBLE_WIDTH);
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}
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$printer->cut();
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$printer->close();
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/*
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* 3: PDF printing still too slow? If you regularly print the same files, serialize & compress your
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* EscposImage objects (after printing[1]), instead of throwing them away.
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*
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* (You can also do this to print logos on computers which don't have an
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* image processing library, by preparing a serialized version of your logo on your PC)
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*
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* [1]After printing, the pixels are loaded and formatted for the print command you used, so even a raspberry pi can print complex PDF's quickly.
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*/
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$connector = new FilePrintConnector("php://stdout");
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$printer = new Printer($connector);
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$pdf = 'resources/document.pdf';
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$ser = 'resources/document.z';
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if (!file_exists($ser)) {
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$pages = ImagickEscposImage::loadPdf($pdf);
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} else {
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$pages = unserialize(gzuncompress(file_get_contents($ser)));
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}
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foreach ($pages as $page) {
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$printer->graphics($page);
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}
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$printer->cut();
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$printer->close();
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if (!file_exists($ser)) {
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file_put_contents($ser, gzcompress(serialize($pages)));
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}
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