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<?php
/**
* escpos-php, a Thermal receipt printer library, for use with
* ESC/POS compatible printers.
*
* Copyright (c) 2014-2015 Michael Billington <michael.billington@gmail.com>,
* incorporating modifications by:
* - Roni Saha <roni.cse@gmail.com>
* - Gergely Radics <gerifield@ustream.tv>
* - Warren Doyle <w.doyle@fuelled.co>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* This class generates ESC/POS printer control commands for compatible printers.
* See README.md for a summary of compatible printers and supported commands, and
* basic usage.
*
* See example/demo.php for a detailed print-out demonstrating the range of commands
* implemented in this project.
*
* Note that some functions have not been implemented:
* - Set paper sensors
* - Select print colour
*
* Please direct feature requests, bug reports and contributions to escpos-php
* on Github:
* - https://github.com/mike42/escpos-php
*/
require_once(dirname(__FILE__) . "/src/EscposImage.php");
require_once(dirname(__FILE__) . "/src/PrintBuffer.php");
require_once(dirname(__FILE__) . "/src/EscposPrintBuffer.php");
require_once(dirname(__FILE__) . "/src/PrintConnector.php");
require_once(dirname(__FILE__) . "/src/WindowsPrintConnector.php");
require_once(dirname(__FILE__) . "/src/FilePrintConnector.php");
require_once(dirname(__FILE__) . "/src/NetworkPrintConnector.php");
require_once(dirname(__FILE__) . "/src/AbstractCapabilityProfile.php");
require_once(dirname(__FILE__) . "/src/DefaultCapabilityProfile.php");
require_once(dirname(__FILE__) . "/src/SimpleCapabilityProfile.php");
require_once(dirname(__FILE__) . "/src/EposTepCapabilityProfile.php");
require_once(dirname(__FILE__) . "/src/StarCapabilityProfile.php");
require_once(dirname(__FILE__) . "/src/P822DCapabilityProfile.php");
require_once(dirname(__FILE__) . "/src/CodePage.php");
require_once(dirname(__FILE__) . "/src/ImagePrintBuffer.php");
class Escpos {
/* ASCII codes */
const NUL = "\x00";
const LF = "\x0a";
const ESC = "\x1b";
const FS = "\x1c";
const FF = "\x0c";
const GS = "\x1d";
const DLE = "\x10";
const EOT = "\x04";
/* Barcode types */
const BARCODE_UPCA = 65;
const BARCODE_UPCE = 66;
const BARCODE_JAN13 = 67;
const BARCODE_JAN8 = 68;
const BARCODE_CODE39 = 69;
const BARCODE_ITF = 70;
const BARCODE_CODABAR = 71;
const BARCODE_CODE93 = 72;
const BARCODE_CODE128 = 73;
/* Barcode HRI (human-readable interpretation) text position */
const BARCODE_TEXT_NONE = 0;
const BARCODE_TEXT_ABOVE = 1;
const BARCODE_TEXT_BELOW = 2;
/* Cut types */
const CUT_FULL = 65;
const CUT_PARTIAL = 66;
/* Fonts */
const FONT_A = 0;
const FONT_B = 1;
const FONT_C = 2;
/* Image sizing options */
const IMG_DEFAULT = 0;
const IMG_DOUBLE_WIDTH = 1;
const IMG_DOUBLE_HEIGHT = 2;
/* Justifications */
const JUSTIFY_LEFT = 0;
const JUSTIFY_CENTER = 1;
const JUSTIFY_RIGHT = 2;
/* Print mode constants */
const MODE_FONT_A = 0;
const MODE_FONT_B = 1;
const MODE_EMPHASIZED = 8;
const MODE_DOUBLE_HEIGHT = 16;
const MODE_DOUBLE_WIDTH = 32;
const MODE_UNDERLINE = 128;
/* QR code error correction levels */
const QR_ECLEVEL_L = 0;
const QR_ECLEVEL_M = 1;
const QR_ECLEVEL_Q = 2;
const QR_ECLEVEL_H = 3;
/* QR code models */
const QR_MODEL_1 = 1;
const QR_MODEL_2 = 2;
const QR_MICRO = 3;
/* Printer statuses */
const STATUS_PRINTER = 1;
const STATUS_OFFLINE_CAUSE = 2;
const STATUS_ERROR_CAUSE = 3;
const STATUS_PAPER_ROLL = 4;
const STATUS_INK_A = 7;
const STATUS_INK_B = 6;
const STATUS_PEELER = 8;
/* Underline */
const UNDERLINE_NONE = 0;
const UNDERLINE_SINGLE = 1;
const UNDERLINE_DOUBLE = 2;
/**
* @var PrintBuffer The printer's output buffer.
*/
private $buffer;
/**
* @var PrintConnector
* @CHANGE
*/
protected $connector;
// private $connector;
/**
* @var AbstractCapabilityProfile
*/
private $profile;
/**
* @var int Current character code table
*/
private $characterTable;
/**
* Construct a new print object
*
* @param PrintConnector $connector The PrintConnector to send data to. If not set, output is sent to standard output.
* @param AbstractCapabilityProfile $profile Supported features of this printer. If not set, the DefaultCapabilityProfile will be used, which is suitable for Epson printers.
* @throws InvalidArgumentException
*/
function __construct(PrintConnector $connector = null, AbstractCapabilityProfile $profile = null) {
if(is_null($connector)) {
if(php_sapi_name() == 'cli') {
$connector = new FilePrintConnector("php://stdout");
} else {
throw new InvalidArgumentException("Argument passed to Escpos::__construct() must implement interface PrintConnector, null given.");
}
}
/* Set connector */
$this -> connector = $connector;
/* Set capability profile */
if($profile === null) {
$profile = DefaultCapabilityProfile::getInstance();
}
$this -> profile = $profile;
/* Set buffer */
$buffer = new EscposPrintBuffer();
$this -> buffer = null;
$this -> setPrintBuffer($buffer);
$this -> initialize();
}
/**
* Print a barcode.
*
* @param string $content The information to encode.
* @param int $type The barcode standard to output. If not specified, `Escpos::BARCODE_CODE39` will be used. Note that some barcode formats only support specific lengths or sets of characters.
* @throws InvalidArgumentException Where the length or characters used in $content is invalid for the requested barcode format.
*/
function barcode($content, $type = self::BARCODE_CODE39) {
/* Validate input */
self::validateInteger($type, 65, 73, __FUNCTION__, "Barcode type");
$len = strlen($content);
switch($type) {
case self::BARCODE_UPCA:
self::validateInteger($len, 11, 12, __FUNCTION__, "UPCA barcode content length");
self::validateStringRegex($content, __FUNCTION__, "/^[0-9]{11,12}$/", "UPCA barcode content");
break;
case self::BARCODE_UPCE:
self::validateIntegerMulti($len, array(array(6, 8), array(11, 12)), __FUNCTION__, "UPCE barcode content length");
self::validateStringRegex($content, __FUNCTION__, "/^([0-9]{6,8}|[0-9]{11,12})$/", "UPCE barcode content");
break;
case self::BARCODE_JAN13:
self::validateInteger($len, 12, 13, __FUNCTION__, "JAN13 barcode content length");
self::validateStringRegex($content, __FUNCTION__, "/^[0-9]{12,13}$/", "JAN13 barcode content");
break;
case self::BARCODE_JAN8:
self::validateInteger($len, 7, 8, __FUNCTION__, "JAN8 barcode content length");
self::validateStringRegex($content, __FUNCTION__, "/^[0-9]{7,8}$/", "JAN8 barcode content");
break;
case self::BARCODE_CODE39:
self::validateInteger($len, 1, 255, __FUNCTION__, "CODE39 barcode content length"); // 255 is a limitation of the "function b" command, not the barcode format.
self::validateStringRegex($content, __FUNCTION__, "/^([0-9A-Z \$\%\+\-\.\/]+|\*[0-9A-Z \$\%\+\-\.\/]+\*)$/", "CODE39 barcode content");
break;
case self::BARCODE_ITF:
self::validateInteger($len, 2, 255, __FUNCTION__, "ITF barcode content length"); // 255 is a limitation of the "function b" command, not the barcode format.
self::validateStringRegex($content, __FUNCTION__, "/^([0-9]{2})+$/", "ITF barcode content");
break;
case self::BARCODE_CODABAR:
self::validateInteger($len, 1, 255, __FUNCTION__, "Codabar barcode content length"); // 255 is a limitation of the "function b" command, not the barcode format.
self::validateStringRegex($content, __FUNCTION__, "/^[A-Da-d][0-9\$\+\-\.\/\:]+[A-Da-d]$/", "Codabar barcode content");
break;
case self::BARCODE_CODE93:
self::validateInteger($len, 1, 255, __FUNCTION__, "Code93 barcode content length"); // 255 is a limitation of the "function b" command, not the barcode format.
self::validateStringRegex($content, __FUNCTION__, "/^[\\x00-\\x7F]+$/", "Code93 barcode content");
break;
case self::BARCODE_CODE128:
self::validateInteger($len, 1, 255, __FUNCTION__, "Code128 barcode content length"); // 255 is a limitation of the "function b" command, not the barcode format.
// The CODE128 encoder is quite complex, so only a very basic header-check is applied here.
self::validateStringRegex($content, __FUNCTION__, "/^\{[A-C][\\x00-\\x7F]+$/", "Code128 barcode content");
break;
}
if(!$this -> profile -> getSupportsBarcodeB()) {
// A simpler barcode command which supports fewer codes
self::validateInteger($type, 65, 71, __FUNCTION__);
$this -> connector -> write(self::GS . "k" . chr($type - 65) . $content . self::NUL);
return;
}
// More advanced function B, used in preference
$this -> connector -> write(self::GS . "k" . chr($type) . chr(strlen($content)) . $content);
}
/**
* Print an image, using the older "bit image" command. This creates padding on the right of the image,
* if its width is not divisible by 8.
*
* Should only be used if your printer does not support the graphics() command.
*
* @param EscposImage $img The image to print
* @param EscposImage $size Size modifier for the image.
*/
function bitImage(EscposImage $img, $size = self::IMG_DEFAULT) {
self::validateInteger($size, 0, 3, __FUNCTION__);
$header = self::dataHeader(array($img -> getWidthBytes(), $img -> getHeight()), true);
$this -> connector -> write(self::GS . "v0" . chr($size) . $header);
$this -> connector -> write($img -> toRasterFormat());
}
/**
* Close the underlying buffer. With some connectors, the
* job will not actually be sent to the printer until this is called.
*/
function close() {
$this -> connector -> finalize();
}
/**
* Cut the paper.
*
* @param int $mode Cut mode, either Escpos::CUT_FULL or Escpos::CUT_PARTIAL. If not specified, `Escpos::CUT_FULL` will be used.
* @param int $lines Number of lines to feed
*/
function cut($mode = self::CUT_FULL, $lines = 3) {
// TODO validation on cut() inputs
$this -> connector -> write(self::GS . "V" . chr($mode) . chr($lines));
}
/**
* Print and feed line / Print and feed n lines.
*
* @param int $lines Number of lines to feed
*/
function feed($lines = 1) {
self::validateInteger($lines, 1, 255, __FUNCTION__);
if($lines <= 1) {
$this -> connector -> write(self::LF);
} else {
$this -> connector -> write(self::ESC . "d" . chr($lines));
}
}
/**
* Some printers require a form feed to release the paper. On most printers, this
* command is only useful in page mode, which is not implemented in this driver.
*/
function feedForm() {
$this -> connector -> write(self::FF);
}
/**
* Print and reverse feed n lines.
*
* @param int $lines number of lines to feed. If not specified, 1 line will be fed.
*/
function feedReverse($lines = 1) {
self::validateInteger($lines, 1, 255, __FUNCTION__);
$this -> connector -> write(self::ESC . "e" . chr($lines));
}
/**
* @return number
*/
function getCharacterTable() {
return $this -> characterTable;
}
/**
* @return PrintBuffer
*/
function getPrintBuffer() {
return $this -> buffer;
}
/**
* @return PrintConnector
*/
function getPrintConnector() {
return $this -> connector;
}
/**
* @return AbstractCapabilityProfile
*/
function getPrinterCapabilityProfile() {
return $this -> profile;
}
/**
* @param int $type The type of status to request
* @return stdClass Class containing requested status, or null if either no status was received, or your print connector is unable to read from the printer.
*/
function getPrinterStatus($type = self::STATUS_PRINTER) {
self::validateIntegerMulti($type, array(array(1, 4), array(6, 8)), __FUNCTION__);
// Determine which flags we are looking for
$statusFlags = array(
self::STATUS_PRINTER => array(
4 => "pulseHigh", // connector pin 3, see pulse().
8 => "offline",
32 => "waitingForOnlineRecovery",
64 => "feedButtonPressed"
),
self::STATUS_OFFLINE_CAUSE => array(
4 => "coverOpen",
8 => "paperManualFeed",
32 => "paperEnd",
64 => "errorOccurred"
),
self::STATUS_ERROR_CAUSE => array(
4 => "recoverableError",
8 => "autocutterError",
32 => "unrecoverableError",
64 => "autorecoverableError"
),
self::STATUS_PAPER_ROLL => array(
4 => "paperNearEnd",
32 => "paperNotPresent"
),
self::STATUS_INK_A => array(
4 => "inkNearEnd",
8 => "inkEnd",
32 => "inkNotPresent",
64 => "cleaning"
),
self::STATUS_INK_B => array(
4 => "inkNearEnd",
8 => "inkEnd",
32 => "inkNotPresent"
),
self::STATUS_PEELER => array(
4 => "labelWaitingForRemoval",
32 => "labelPaperNotDetected"
)
);
$flags = $statusFlags[$type];
// Clear any previous statuses which haven't been read yet
$f = $this -> connector -> read(1);
// Make request
$reqC = chr($type);
switch($type) {
// Special cases: These are two-character requests
case self::STATUS_INK_A:
$reqC = chr(7) . chr(1);
break;
case self::STATUS_INK_B:
$reqC = chr(7) . chr(2);
break;
case self::STATUS_PEELER:
$reqC = chr(8) . chr(3);
break;
}
$this -> connector -> write(self::DLE . self::EOT . $reqC);
// Wait for single-character response
$f = $this -> connector -> read(1);
$i = 0;
while($f === false && $i < 50000) {
usleep(100);
$f = $this -> connector -> read(1);
$i++;
}
if($f === false) {
// Timeout
return null;
}
$ret = new stdClass();
foreach($flags as $num => $name) {
$ret -> $name = (ord($f) & $num) != 0;
}
return $ret;
}
/**
* Print an image to the printer.
*
* Size modifiers are:
* - IMG_DEFAULT (leave image at original size)
* - IMG_DOUBLE_WIDTH
* - IMG_DOUBLE_HEIGHT
*
* See the example/ folder for detailed examples.
*
* The function bitImage() takes the same parameters, and can be used if
* your printer doesn't support the newer graphics commands.
*
* @param EscposImage $img The image to print.
* @param int $size Output size modifier for the image.
*/
function graphics(EscposImage $img, $size = self::IMG_DEFAULT) {
self::validateInteger($size, 0, 3, __FUNCTION__);
$imgHeader = self::dataHeader(array($img -> getWidth(), $img -> getHeight()), true);
$tone = '0';
$colors = '1';
$xm = (($size & self::IMG_DOUBLE_WIDTH) == self::IMG_DOUBLE_WIDTH) ? chr(2) : chr(1);
$ym = (($size & self::IMG_DOUBLE_HEIGHT) == self::IMG_DOUBLE_HEIGHT) ? chr(2) : chr(1);
$header = $tone . $xm . $ym . $colors . $imgHeader;
$this -> wrapperSendGraphicsData('0', 'p', $header . $img -> toRasterFormat());
$this -> wrapperSendGraphicsData('0', '2');
}
/**
* Initialize printer. This resets formatting back to the defaults.
*/
function initialize() {
$this -> connector -> write(self::ESC . "@");
$this -> characterTable = 0;
}
/**
* Generate a pulse, for opening a cash drawer if one is connected.
* The default settings should open an Epson drawer.
*
* @param int $pin 0 or 1, for pin 2 or pin 5 kick-out connector respectively.
* @param int $on_ms pulse ON time, in milliseconds.
* @param int $off_ms pulse OFF time, in milliseconds.
*/
function pulse($pin = 0, $on_ms = 120, $off_ms = 240) {
self::validateInteger($pin, 0, 1, __FUNCTION__);
self::validateInteger($on_ms, 1, 511, __FUNCTION__);
self::validateInteger($off_ms, 1, 511, __FUNCTION__);
$this -> connector -> write(self::ESC . "p" . chr($pin + 48) . chr($on_ms / 2) . chr($off_ms / 2));
}
/**
* Print the given data as a QR code on the printer.
*
* @param string $content The content of the code. Numeric data will be more efficiently compacted.
* @param int $ec Error-correction level to use. One of Escpos::QR_ECLEVEL_L (default), Escpos::QR_ECLEVEL_M, Escpos::QR_ECLEVEL_Q or Escpos::QR_ECLEVEL_H. Higher error correction results in a less compact code.
* @param int $size Pixel size to use. Must be 1-16 (default 3)
* @param int $model QR code model to use. Must be one of Escpos::QR_MODEL_1, Escpos::QR_MODEL_2 (default) or Escpos::QR_MICRO (not supported by all printers).
*/
function qrCode($content, $ec = self::QR_ECLEVEL_L, $size = 3, $model = self::QR_MODEL_2) {
self::validateString($content, __FUNCTION__);
self::validateInteger($ec, 0, 3, __FUNCTION__);
self::validateInteger($size, 1, 16, __FUNCTION__);
self::validateInteger($model, 1, 3, __FUNCTION__);
if($content == "") {
return;
}
if(!$this -> profile -> getSupportsQrCode()) {
// TODO use software rendering via phpqrcode instead
throw new Exception("QR codes are not supported on your printer.");
}
$cn = '1'; // Code type for QR code
// Select model: 1, 2 or micro.
$this -> wrapperSend2dCodeData(chr(65), $cn, chr(48 + $model) . chr(0));
// Set dot size.
$this -> wrapperSend2dCodeData(chr(67), $cn, chr($size));
// Set error correction level: L, M, Q, or H
$this -> wrapperSend2dCodeData(chr(69), $cn, chr(48 + $ec));
// Send content & print
$this -> wrapperSend2dCodeData(chr(80), $cn, $content, '0');
$this -> wrapperSend2dCodeData(chr(81), $cn, '', '0');
}
/**
* Switch character table (code page) manually. Used in conjunction with textRaw() to
* print special characters which can't be encoded automatically.
*
* @param int $table The table to select. Available code tables are model-specific.
*/
function selectCharacterTable($table = 0) {
self::validateInteger($table, 0, 255, __FUNCTION__);
$supported = $this -> profile -> getSupportedCodePages();
if(!isset($supported[$table])) {
throw new InvalidArgumentException("There is no code table $table allowed by this printer's capability profile.");
}
$this -> characterTable = $table;
if($this -> profile -> getSupportsStarCommands()) {
/* Not an ESC/POS command: STAR printers stash all the extra code pages under a different command. */
$this -> connector -> write(self::ESC . self::GS . "t" . chr($table));
return;
}
$this -> connector -> write(self::ESC . "t" . chr($table));
}
/**
* Select print mode(s).
*
* Several MODE_* constants can be OR'd together passed to this function's `$mode` argument. The valid modes are:
* - MODE_FONT_A
* - MODE_FONT_B
* - MODE_EMPHASIZED
* - MODE_DOUBLE_HEIGHT
* - MODE_DOUBLE_WIDTH
* - MODE_UNDERLINE
*
* @param int $mode The mode to use. Default is Escpos::MODE_FONT_A, with no special formatting. This has a similar effect to running initialize().
*/
function selectPrintMode($mode = self::MODE_FONT_A) {
$allModes = self::MODE_FONT_B | self::MODE_EMPHASIZED | self::MODE_DOUBLE_HEIGHT | self::MODE_DOUBLE_WIDTH | self::MODE_UNDERLINE;
if(!is_integer($mode) || $mode < 0 || ($mode & $allModes) != $mode) {
throw new InvalidArgumentException("Invalid mode");
}
$this -> connector -> write(self::ESC . "!" . chr($mode));
}
/**
* Set barcode height.
*
* @param int $height Height in dots. If not specified, 8 will be used.
*/
function setBarcodeHeight($height = 8) {
self::validateInteger($height, 1, 255, __FUNCTION__);
$this -> connector -> write(self::GS . "h" . chr($height));
}
/**
* Set the position for the Human Readable Interpretation (HRI) of barcode characters.
*
* @param position $position. Use Escpos::BARCODE_TEXT_NONE to hide the text (default), or any combination of Escpos::BARCODE_TEXT_TOP and Escpos::BARCODE_TEXT_BOTTOM flags to display the text.
*/
function setBarcodeTextPosition($position = self::BARCODE_TEXT_NONE) {
self::validateInteger($position, 0, 3, __FUNCTION__, "Barcode text position");
$this -> connector -> write(self::GS . "H" . chr($position));
}
/**
* Turn double-strike mode on/off.
*
* @param boolean $on true for double strike, false for no double strike
*/
function setDoubleStrike($on = true) {
self::validateBoolean($on, __FUNCTION__);
$this -> connector -> write(self::ESC . "G". ($on ? chr(1) : chr(0)));
}
/**
* Turn emphasized mode on/off.
*
* @param boolean $on true for emphasis, false for no emphasis
*/
function setEmphasis($on = true) {
self::validateBoolean($on, __FUNCTION__);
$this -> connector -> write(self::ESC . "E". ($on ? chr(1) : chr(0)));
}
/**
* Select font. Most printers have two fonts (Fonts A and B), and some have a third (Font C).
*
* @param int $font The font to use. Must be either Escpos::FONT_A, Escpos::FONT_B, or Escpos::FONT_C.
*/
function setFont($font = self::FONT_A) {
self::validateInteger($font, 0, 2, __FUNCTION__);
$this -> connector -> write(self::ESC . "M" . chr($font));
}
/**
* Select justification.
*
* @param int $justification One of Escpos::JUSTIFY_LEFT, Escpos::JUSTIFY_CENTER, or Escpos::JUSTIFY_RIGHT.
*/
function setJustification($justification = self::JUSTIFY_LEFT) {
self::validateInteger($justification, 0, 2, __FUNCTION__);
$this -> connector -> write(self::ESC . "a" . chr($justification));
}
/**
* Attach a different print buffer to the printer. Buffers are responsible for handling text output to the printer.
*
* @param PrintBuffer $buffer The buffer to use.
* @throws InvalidArgumentException Where the buffer is already attached to a different printer.
*/
function setPrintBuffer(PrintBuffer $buffer) {
if($buffer === $this -> buffer) {
return;
}
if($buffer -> getPrinter() != null) {
throw new InvalidArgumentException("This buffer is already attached to a printer.");
}
if($this -> buffer !== null) {
$this -> buffer -> setPrinter(null);
}
$this -> buffer = $buffer;
$this -> buffer -> setPrinter($this);
}
/**
* Set black/white reverse mode on or off. In this mode, text is printed white on a black background.
*
* @param boolean $on True to enable, false to disable.
*/
function setReverseColors($on = true) {
self::validateBoolean($on, __FUNCTION__);
$this -> connector -> write(self::GS . "B" . ($on ? chr(1) : chr(0)));
}
/**
* Set the size of text, as a multiple of the normal size.
*
* @param int $widthMultiplier Multiple of the regular height to use (range 1 - 8)
* @param int $heightMultiplier Multiple of the regular height to use (range 1 - 8)
*/
function setTextSize($widthMultiplier, $heightMultiplier) {
self::validateInteger($widthMultiplier, 1, 8, __FUNCTION__);
self::validateInteger($heightMultiplier, 1, 8, __FUNCTION__);
$c = pow(2,4) * ($widthMultiplier - 1) + ($heightMultiplier - 1);
$this -> connector -> write(self::GS . "!" . chr($c));
}
/**
* Set underline for printed text.
*
* Argument can be true/false, or one of UNDERLINE_NONE,
* UNDERLINE_SINGLE or UNDERLINE_DOUBLE.
*
* @param int $underline Either true/false, or one of Escpos::UNDERLINE_NONE, Escpos::UNDERLINE_SINGLE or Escpos::UNDERLINE_DOUBLE. Defaults to Escpos::UNDERLINE_SINGLE.
*/
function setUnderline($underline = self::UNDERLINE_SINGLE) {
/* Map true/false to underline constants */
if($underline === true) {
$underline = self::UNDERLINE_SINGLE;
} else if($underline === false) {
$underline = self::UNDERLINE_NONE;
}
/* Set the underline */
self::validateInteger($underline, 0, 2, __FUNCTION__);
$this -> connector -> write(self::ESC . "-". chr($underline));
}
/**
* Add text to the buffer.
*
* Text should either be followed by a line-break, or feed() should be called
* after this to clear the print buffer.
*
* @param string $str Text to print
*/
function text($str = "") {
self::validateString($str, __FUNCTION__);
$this -> buffer -> writeText((string)$str);
}
/**
* Add text to the buffer without attempting to interpret chararacter codes.
*
* Text should either be followed by a line-break, or feed() should be called
* after this to clear the print buffer.
*
* @param string $str Text to print
*/
function textRaw($str = "") {
self::validateString($str, __FUNCTION__);
$this -> buffer -> writeTextRaw((string)$str);
}
/**
* Wrapper for GS ( k, to calculate and send correct data length.
*
* @param string $fn Function to use
* @param string $cn Output code type. Affects available data
* @param string $data Data to send.
* @param string $m Modifier/variant for function. Often '0' where used.
* @throws InvalidArgumentException Where the input lengths are bad.
*/
private function wrapperSend2dCodeData($fn, $cn, $data = '', $m = '') {
if(strlen($m) > 1 || strlen($cn) != 1 || strlen($fn) != 1) {
throw new InvalidArgumentException("wrapperSend2dCodeData: cn and fn must be one character each.");
}
$header = $this -> intLowHigh(strlen($data) + strlen($m) + 2, 2);
$this -> connector -> write(self::GS . "(k" . $header . $cn . $fn . $m . $data);
}
/**
* Wrapper for GS ( L, to calculate and send correct data length.
*
* @param string $m Modifier/variant for function. Usually '0'.
* @param string $fn Function number to use, as character.
* @param string $data Data to send.
* @throws InvalidArgumentException Where the input lengths are bad.
*/
private function wrapperSendGraphicsData($m, $fn, $data = '') {
if(strlen($m) != 1 || strlen($fn) != 1) {
throw new InvalidArgumentException("wrapperSendGraphicsData: m and fn must be one character each.");
}
$header = $this -> intLowHigh(strlen($data) + 2, 2);
$this -> connector -> write(self::GS . "(L" . $header . $m . $fn . $data);
}
/**
* Convert widths and heights to characters. Used before sending graphics to set the size.
*
* @param array $inputs
* @param boolean $long True to use 4 bytes, false to use 2
* @return string
*/
private static function dataHeader(array $inputs, $long = true) {
$outp = array();
foreach($inputs as $input) {
if($long) {
$outp[] = Escpos::intLowHigh($input, 2);
} else {
self::validateInteger($input, 0 , 255, __FUNCTION__);
$outp[] = chr($input);
}
}
return implode("", $outp);
}
/**
* Generate two characters for a number: In lower and higher parts, or more parts as needed.
* @param int $int Input number
* @param int $length The number of bytes to output (1 - 4).
*/
private static function intLowHigh($input, $length) {
$maxInput = (256 << ($length * 8) - 1);
self::validateInteger($length, 1, 4, __FUNCTION__);
self::validateInteger($input, 0, $maxInput, __FUNCTION__);
$outp = "";
for($i = 0; $i < $length; $i++) {
$outp .= chr($input % 256);
$input = (int)($input / 256);
}
return $outp;
}
/**
* Throw an exception if the argument given is not a boolean
*
* @param boolean $test the input to test
* @param string $source the name of the function calling this
*/
protected static function validateBoolean($test, $source) {
if(!($test === true || $test === false)) {
throw new InvalidArgumentException("Argument to $source must be a boolean");
}
}
/**
* Throw an exception if the argument given is not an integer within the specified range
*
* @param int $test the input to test
* @param int $min the minimum allowable value (inclusive)
* @param int $max the maximum allowable value (inclusive)
* @param string $source the name of the function calling this
* @param string $argument the name of the invalid parameter
*/
protected static function validateInteger($test, $min, $max, $source, $argument = "Argument") {
self::validateIntegerMulti($test, array(array($min, $max)), $source, $argument);
}
/**
* Throw an exception if the argument given is not an integer within one of the specified ranges
*
* @param int $test the input to test
* @param arrray $ranges array of two-item min/max ranges.
* @param string $source the name of the function calling this
* @param string $source the name of the function calling this
* @param string $argument the name of the invalid parameter
*/
protected static function validateIntegerMulti($test, array $ranges, $source, $argument = "Argument") {
if(!is_integer($test)) {
throw new InvalidArgumentException("$argument given to $source must be a number, but '$test' was given.");
}
$match = false;
foreach($ranges as $range) {
$match |= $test >= $range[0] && $test <= $range[1];
}
if(!$match) {
// Put together a good error "range 1-2 or 4-6"
$rangeStr = "range ";
for($i = 0; $i < count($ranges); $i++) {
$rangeStr .= $ranges[$i][0] . "-" . $ranges[$i][1];
if($i == count($ranges) - 1) {
continue;
} else if($i == count($ranges) - 2) {
$rangeStr .= " or ";
} else {
$rangeStr .= ", ";
}
}
throw new InvalidArgumentException("$argument given to $source must be in $rangeStr, but $test was given.");
}
}
/**
* Throw an exception if the argument given can't be cast to a string
*
* @param string $test the input to test
* @param string $source the name of the function calling this
* @param string $argument the name of the invalid parameter
*/
protected static function validateString($test, $source, $argument = "Argument") {
if (is_object($test) && !method_exists($test, '__toString')) {
throw new InvalidArgumentException("$argument to $source must be a string");
}
}
protected static function validateStringRegex($test, $source, $regex, $argument = "Argument") {
if(preg_match($regex, $test) === 0) {
throw new InvalidArgumentException("$argument given to $source is invalid. It should match regex '$regex', but '$test' was given.");
}
}
}