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100 lines
3.4 KiB
PHP
100 lines
3.4 KiB
PHP
<?php
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/**
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* escpos-php, a Thermal receipt printer library, for use with
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* ESC/POS compatible printers.
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*
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* Copyright (c) 2014-2015 Michael Billington <michael.billington@gmail.com>,
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* incorporating modifications by:
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* - Roni Saha <roni.cse@gmail.com>
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* - Gergely Radics <gerifield@ustream.tv>
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* - Warren Doyle <w.doyle@fuelled.co>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* This class renders text to small images on-the-fly. It attempts to mimic the
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* behaviour of text output, whilst supporting any fonts & character encodings
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* which your system can handle. This class currently requires Imagick.
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*/
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class ImagePrintBuffer implements PrintBuffer {
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private $printer;
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function __construct() {
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if(!EscposImage::isImagickLoaded()) {
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throw new Exception("ImagePrintBuffer requires the imagick extension");
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}
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}
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function flush() {
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if($this -> printer == null) {
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throw new LogicException("Not attached to a printer.");
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}
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}
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function getPrinter() {
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return $this -> printer;
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}
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function setPrinter(Escpos $printer = null) {
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$this -> printer = $printer;
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}
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function writeText($text) {
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if($this -> printer == null) {
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throw new LogicException("Not attached to a printer.");
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}
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if($text == null) {
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return;
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}
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$text = trim($text, "\n");
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/* Create Imagick objects */
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$image = new Imagick();
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$draw = new ImagickDraw();
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$color = new ImagickPixel('#000000');
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$background = new ImagickPixel('white');
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/* Create annotation */
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//$draw -> setFont('Arial');// (not necessary?)
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$draw -> setFontSize(24); // Size 21 looks good for FONT B
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$draw -> setFillColor($color);
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$draw -> setStrokeAntialias(true);
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$draw -> setTextAntialias(true);
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$metrics = $image -> queryFontMetrics($draw, $text);
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$draw -> annotation(0, $metrics['ascender'], $text);
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/* Create image & draw annotation on it */
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$image -> newImage($metrics['textWidth'], $metrics['textHeight'], $background);
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$image -> setImageFormat('png');
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$image -> drawImage($draw);
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//$image -> writeImage("test.png");
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/* Save image */
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$escposImage = new EscposImage();
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$escposImage -> readImageFromImagick($image);
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$size = Escpos::IMG_DEFAULT;
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$this -> printer -> bitImage($escposImage, $size);
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}
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function writeTextRaw($text) {
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if($this -> printer == null) {
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throw new LogicException("Not attached to a printer.");
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}
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$this -> printer -> getPrintConnector() -> write($data);
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}
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}
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