解決在頁面中無法獲取qrcode.js生成的base64的圖片
阿新 • • 發佈：2019-07-02
應用場景
生成帶二維碼的推廣海報圖片
舊方法:
將使用者自己的推廣連線先通過qrcode.js生成二維碼，然後再用後臺返回的一張背景圖片和二維碼通過canvas繪製成一張海報。
問題
在部分安卓手機上獲取二維碼圖片後，onload事件不起作用，程式碼演示如下。
<!---放二維碼---> <div id="imgs" style="width:100px; height:100px; margin-top:15px;"hidden></div> <!-- 生成canvas海報 --> <canvas id="myCanvas" width="" height=""></canvas> <!-- 生成canvas海報 --> <!--海報彈窗--> <div class="shadow" onclick="shareHide()"></div> <img class="shareImg" id="imgShow" src=""> <script type="text/javascript"> document.onreadystatechange = loadingChange; // 當頁面載入狀態改變的時候執行這個方法. function loadingChange() { if(document.readyState == "Loading") { // 當頁面載入狀態為完全結束時進入 // $(".shodowS").show() } if(document.readyState == "complete") { // 當頁面載入狀態為完全結束時進入 var qrcodes = new QRCode(document.getElementById("imgs"), { width : 160, height : 160 }); qrcodes.makeCode('{$url}'); // 生成二維碼 shareImgs(); } } var canvas = document.getElementById('myCanvas'); canvas.width=$("#container").width()*2; canvas.height=$("#container").width()*1440/1080*2; $("#myCanvas").css("width",$("#container").width()); $("#myCanvas").css("height",$("#container").width()*1440/1080); // 分享圖片生成的 function shareImgs() { var qrcode=document.getElementById("imgss"); if (canvas.getContext) { var ctx = canvas.getContext('2d'); //建立新的圖片物件 var img = document.getElementById("imgs1"); var img = new Image; //指定圖片的URL // img.crossOrigin="anonymous"; // 這個可以對蘋果手機做相容(跨域) // img.src=img.src; img.src='{$bg[0]}'; img.onload = function() { var imgOw=img.width,imgOh=img.height; var imgW=canvas.width,imgH=(imgOh*canvas.width)/imgOw; var imgX=0,imgY=0; //以Canvas畫布上的座標(10,10)為起始點，繪製圖像 ctx.drawImage(img, imgX, imgY,imgW,imgH); var qrcodeX, qrcodeY,qrcodeW,qrcodeH; qrcode.crossOrigin="anonymous"; qrcode.src=qrcode.src; qrcode.onload = function() { //以Canvas畫布上的座標(10,10)為起始點，繪製圖像 ctx.drawImage(qrcode,846/1080*canvas.width, 1220/1440*(imgOh*canvas.width)/imgOw+(canvas.height-imgH)/2, 160/1440*img.width, 160/1440*img.width); var _imgSrc = canvas.toDataURL("image/png",1); var imgShow = document.getElementById('imgShow'); imgShow.setAttribute('src', _imgSrc); } } } } </script>
解決方法
雖然知道是頁面渲染的先後問題，但是時間很緊，只能跳過使用另一種方式解決這種在有的手機上不能生成海報的問題。所以決定通過後臺生成二維碼放在頁面，然後JS只需要獲取後臺返回的base64二維碼和海報繪製再生成圖片，最後安卓蘋果手機都能顯示了。
1. 使用的是phpqrcode類，不過需要簡單的修改一下，讓其能生成base64的二維碼，這個我是在網上參考別人的原始碼，具體是誰忘記了，記起後代碼原著我會補上，這裡就程式碼先上了。
<?php
/*
* Version: 1.1.4
* Build: 2010100721
*/
//---- qrconst.php -----------------------------
/*
* PHP QR Code encoder
*
* Common constants
*
* Based on libqrencode C library distributed under LGPL 2.1
* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
// Encoding modes
define('QR_MODE_NUL', -1);
define('QR_MODE_NUM', 0);
define('QR_MODE_AN', 1);
define('QR_MODE_8', 2);
define('QR_MODE_KANJI', 3);
define('QR_MODE_STRUCTURE', 4);
// Levels of error correction.
define('QR_ECLEVEL_L', 0);
define('QR_ECLEVEL_M', 1);
define('QR_ECLEVEL_Q', 2);
define('QR_ECLEVEL_H', 3);
// Supported output formats
define('QR_FORMAT_TEXT', 0);
define('QR_FORMAT_PNG', 1);
class qrstr {
public static function set(&$srctab, $x, $y, $repl, $replLen = false) {
$srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
}
}
//---- merged_config.php -----------------------------
/*
* PHP QR Code encoder
*
* Config file, tuned-up for merged verion
*/
define('QR_CACHEABLE', false); // use cache - more disk reads but less CPU power, masks and format templates are stored there
define('QR_CACHE_DIR', false); // used when QR_CACHEABLE === true
define('QR_LOG_DIR', false); // default error logs dir
define('QR_FIND_BEST_MASK', true); // if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
define('QR_FIND_FROM_RANDOM', 2); // if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
define('QR_DEFAULT_MASK', 2); // when QR_FIND_BEST_MASK === false
define('QR_PNG_MAXIMUM_SIZE', 1024); // maximum allowed png image width (in pixels), tune to make sure GD and PHP can handle such big images
//---- qrtools.php -----------------------------
/*
* PHP QR Code encoder
*
* Toolset, handy and debug utilites.
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
class QRtools {
//----------------------------------------------------------------------
public static function binarize($frame)
{
$len = count($frame);
foreach ($frame as &$frameLine) {
for($i=0; $i<$len; $i++) {
$frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
}
}
return $frame;
}
//----------------------------------------------------------------------
public static function tcpdfBarcodeArray($code, $mode = 'QR,L', $tcPdfVersion = '4.5.037')
{
$barcode_array = array();
if (!is_array($mode))
$mode = explode(',', $mode);
$eccLevel = 'L';
if (count($mode) > 1) {
$eccLevel = $mode[1];
}
$qrTab = QRcode::text($code, false, $eccLevel);
$size = count($qrTab);
$barcode_array['num_rows'] = $size;
$barcode_array['num_cols'] = $size;
$barcode_array['bcode'] = array();
foreach ($qrTab as $line) {
$arrAdd = array();
foreach(str_split($line) as $char)
$arrAdd[] = ($char=='1')?1:0;
$barcode_array['bcode'][] = $arrAdd;
}
return $barcode_array;
}
//----------------------------------------------------------------------
public static function clearCache()
{
self::$frames = array();
}
//----------------------------------------------------------------------
public static function buildCache()
{
QRtools::markTime('before_build_cache');
$mask = new QRmask();
for ($a=1; $a <= QRSPEC_VERSION_MAX; $a++) {
$frame = QRspec::newFrame($a);
if (QR_IMAGE) {
$fileName = QR_CACHE_DIR.'frame_'.$a.'.png';
QRimage::png(self::binarize($frame), $fileName, 1, 0);
}
$width = count($frame);
$bitMask = array_fill(0, $width, array_fill(0, $width, 0));
for ($maskNo=0; $maskNo<8; $maskNo++)
$mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);
}
QRtools::markTime('after_build_cache');
}
//----------------------------------------------------------------------
public static function log($outfile, $err)
{
if (QR_LOG_DIR !== false) {
if ($err != '') {
if ($outfile !== false) {
file_put_contents(QR_LOG_DIR.basename($outfile).'-errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
} else {
file_put_contents(QR_LOG_DIR.'errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
}
}
}
}
//----------------------------------------------------------------------
public static function dumpMask($frame)
{
$width = count($frame);
for($y=0;$y<$width;$y++) {
for($x=0;$x<$width;$x++) {
echo ord($frame[$y][$x]).',';
}
}
}
//----------------------------------------------------------------------
public static function markTime($markerId)
{
list($usec, $sec) = explode(" ", microtime());
$time = ((float)$usec + (float)$sec);
if (!isset($GLOBALS['qr_time_bench']))
$GLOBALS['qr_time_bench'] = array();
$GLOBALS['qr_time_bench'][$markerId] = $time;
}
//----------------------------------------------------------------------
public static function timeBenchmark()
{
self::markTime('finish');
$lastTime = 0;
$startTime = 0;
$p = 0;
echo '<table cellpadding="3" cellspacing="1">
<thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>
<tbody>';
foreach($GLOBALS['qr_time_bench'] as $markerId=>$thisTime) {
if ($p > 0) {
echo '<tr><th style="text-align:right">till '.$markerId.': </th><td>'.number_format($thisTime-$lastTime, 6).'s</td></tr>';
} else {
$startTime = $thisTime;
}
$p++;
$lastTime = $thisTime;
}
echo '</tbody><tfoot>
<tr style="border-top:2px solid black"><th style="text-align:right">TOTAL: </th><td>'.number_format($lastTime-$startTime, 6).'s</td></tr>
</tfoot>
</table>';
}
}
//##########################################################################
QRtools::markTime('start');
//---- qrspec.php -----------------------------
/*
* PHP QR Code encoder
*
* QR Code specifications
*
* Based on libqrencode C library distributed under LGPL 2.1
* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* The following data / specifications are taken from
* "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)
* or
* "Automatic identification and data capture techniques --
* QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
define('QRSPEC_VERSION_MAX', 40);
define('QRSPEC_WIDTH_MAX', 177);
define('QRCAP_WIDTH', 0);
define('QRCAP_WORDS', 1);
define('QRCAP_REMINDER', 2);
define('QRCAP_EC', 3);
class QRspec {
public static $capacity = array(
array( 0, 0, 0, array( 0, 0, 0, 0)),
array( 21, 26, 0, array( 7, 10, 13, 17)), // 1
array( 25, 44, 7, array( 10, 16, 22, 28)),
array( 29, 70, 7, array( 15, 26, 36, 44)),
array( 33, 100, 7, array( 20, 36, 52, 64)),
array( 37, 134, 7, array( 26, 48, 72, 88)), // 5
array( 41, 172, 7, array( 36, 64, 96, 112)),
array( 45, 196, 0, array( 40, 72, 108, 130)),
array( 49, 242, 0, array( 48, 88, 132, 156)),
array( 53, 292, 0, array( 60, 110, 160, 192)),
array( 57, 346, 0, array( 72, 130, 192, 224)), //10
array( 61, 404, 0, array( 80, 150, 224, 264)),
array( 65, 466, 0, array( 96, 176, 260, 308)),
array( 69, 532, 0, array( 104, 198, 288, 352)),
array( 73, 581, 3, array( 120, 216, 320, 384)),
array( 77, 655, 3, array( 132, 240, 360, 432)), //15
array( 81, 733, 3, array( 144, 280, 408, 480)),
array( 85, 815, 3, array( 168, 308, 448, 532)),
array( 89, 901, 3, array( 180, 338, 504, 588)),
array( 93, 991, 3, array( 196, 364, 546, 650)),
array( 97, 1085, 3, array( 224, 416, 600, 700)), //20
array(101, 1156, 4, array( 224, 442, 644, 750)),
array(105, 1258, 4, array( 252, 476, 690, 816)),
array(109, 1364, 4, array( 270, 504, 750, 900)),
array(113, 1474, 4, array( 300, 560, 810, 960)),
array(117, 1588, 4, array( 312, 588, 870, 1050)), //25
array(121, 1706, 4, array( 336, 644, 952, 1110)),
array(125, 1828, 4, array( 360, 700, 1020, 1200)),
array(129, 1921, 3, array( 390, 728, 1050, 1260)),
array(133, 2051, 3, array( 420, 784, 1140, 1350)),
array(137, 2185, 3, array( 450, 812, 1200, 1440)), //30
array(141, 2323, 3, array( 480, 868, 1290, 1530)),
array(145, 2465, 3, array( 510, 924, 1350, 1620)),
array(149, 2611, 3, array( 540, 980, 1440, 1710)),
array(153, 2761, 3, array( 570, 1036, 1530, 1800)),
array(157, 2876, 0, array( 570, 1064, 1590, 1890)), //35
array(161, 3034, 0, array( 600, 1120, 1680, 1980)),
array(165, 3196, 0, array( 630, 1204, 1770, 2100)),
array(169, 3362, 0, array( 660, 1260, 1860, 2220)),
array(173, 3532, 0, array( 720, 1316, 1950, 2310)),
array(177, 3706, 0, array( 750, 1372, 2040, 2430)) //40
);
//----------------------------------------------------------------------
public static function getDataLength($version, $level)
{
return self::$capacity[$version][QRCAP_WORDS] - self::$capacity[$version][QRCAP_EC][$level];
}
//----------------------------------------------------------------------
public static function getECCLength($version, $level)
{
return self::$capacity[$version][QRCAP_EC][$level];
}
//----------------------------------------------------------------------
public static function getWidth($version)
{
return self::$capacity[$version][QRCAP_WIDTH];
}
//----------------------------------------------------------------------
public static function getRemainder($version)
{
return self::$capacity[$version][QRCAP_REMINDER];
}
//----------------------------------------------------------------------
public static function getMinimumVersion($size, $level)
{
for($i=1; $i<= QRSPEC_VERSION_MAX; $i++) {
$words = self::$capacity[$i][QRCAP_WORDS] - self::$capacity[$i][QRCAP_EC][$level];
if($words >= $size)
return $i;
}
return -1;
}
//######################################################################
public static $lengthTableBits = array(
array(10, 12, 14),
array( 9, 11, 13),
array( 8, 16, 16),
array( 8, 10, 12)
);
//----------------------------------------------------------------------
public static function lengthIndicator($mode, $version)
{
if ($mode == QR_MODE_STRUCTURE)
return 0;
if ($version <= 9) {
$l = 0;
} else if ($version <= 26) {
$l = 1;
} else {
$l = 2;
}
return self::$lengthTableBits[$mode][$l];
}
//----------------------------------------------------------------------
public static function maximumWords($mode, $version)
{
if($mode == QR_MODE_STRUCTURE)
return 3;
if($version <= 9) {
$l = 0;
} else if($version <= 26) {
$l = 1;
} else {
$l = 2;
}
$bits = self::$lengthTableBits[$mode][$l];
$words = (1 << $bits) - 1;
if($mode == QR_MODE_KANJI) {
$words *= 2; // the number of bytes is required
}
return $words;
}
// Error correction code -----------------------------------------------
// Table of the error correction code (Reed-Solomon block)
// See Table 12-16 (pp.30-36), JIS X0510:2004.
public static $eccTable = array(
array(array( 0, 0), array( 0, 0), array( 0, 0), array( 0, 0)),
array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)), // 1
array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)),
array(array( 1, 0), array( 1, 0), array( 2, 0), array( 2, 0)),
array(array( 1, 0), array( 2, 0), array( 2, 0), array( 4, 0)),
array(array( 1, 0), array( 2, 0), array( 2, 2), array( 2, 2)), // 5
array(array( 2, 0), array( 4, 0), array( 4, 0), array( 4, 0)),
array(array( 2, 0), array( 4, 0), array( 2, 4), array( 4, 1)),
array(array( 2, 0), array( 2, 2), array( 4, 2), array( 4, 2)),
array(array( 2, 0), array( 3, 2), array( 4, 4), array( 4, 4)),
array(array( 2, 2), array( 4, 1), array( 6, 2), array( 6, 2)), //10
array(array( 4, 0), array( 1, 4), array( 4, 4), array( 3, 8)),
array(array( 2, 2), array( 6, 2), array( 4, 6), array( 7, 4)),
array(array( 4, 0), array( 8, 1), array( 8, 4), array(12, 4)),
array(array( 3, 1), array( 4, 5), array(11, 5), array(11, 5)),
array(array( 5, 1), array( 5, 5), array( 5, 7), array(11, 7)), //15
array(array( 5, 1), array( 7, 3), array(15, 2), array( 3, 13)),
array(array( 1, 5), array(10, 1), array( 1, 15), array( 2, 17)),
array(array( 5, 1), array( 9, 4), array(17, 1), array( 2, 19)),
array(array( 3, 4), array( 3, 11), array(17, 4), array( 9, 16)),
array(array( 3, 5), array( 3, 13), array(15, 5), array(15, 10)), //20
array(array( 4, 4), array(17, 0), array(17, 6), array(19, 6)),
array(array( 2, 7), array(17, 0), array( 7, 16), array(34, 0)),
array(array( 4, 5), array( 4, 14), array(11, 14), array(16, 14)),
array(array( 6, 4), array( 6, 14), array(11, 16), array(30, 2)),
array(array( 8, 4), array( 8, 13), array( 7, 22), array(22, 13)), //25
array(array(10, 2), array(19, 4), array(28, 6), array(33, 4)),
array(array( 8, 4), array(22, 3), array( 8, 26), array(12, 28)),
array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)),
array(array( 7, 7), array(21, 7), array( 1, 37), array(19, 26)),
array(array( 5, 10), array(19, 10), array(15, 25), array(23, 25)), //30
array(array(13, 3), array( 2, 29), array(42, 1), array(23, 28)),
array(array(17, 0), array(10, 23), array(10, 35), array(19, 35)),
array(array(17, 1), array(14, 21), array(29, 19), array(11, 46)),
array(array(13, 6), array(14, 23), array(44, 7), array(59, 1)),
array(array(12, 7), array(12, 26), array(39, 14), array(22, 41)), //35
array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)),
array(array(17, 4), array(29, 14), array(49, 10), array(24, 46)),
array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)),
array(array(20, 4), array(40, 7), array(43, 22), array(10, 67)),
array(array(19, 6), array(18, 31), array(34, 34), array(20, 61)),//40
);
//----------------------------------------------------------------------
// CACHEABLE!!!
public static function getEccSpec($version, $level, array &$spec)
{
if (count($spec) < 5) {
$spec = array(0,0,0,0,0);
}
$b1 = self::$eccTable[$version][$level][0];
$b2 = self::$eccTable[$version][$level][1];
$data = self::getDataLength($version, $level);
$ecc = self::getECCLength($version, $level);
if($b2 == 0) {
$spec[0] = $b1;
$spec[1] = (int)($data / $b1);
$spec[2] = (int)($ecc / $b1);
$spec[3] = 0;
$spec[4] = 0;
} else {
$spec[0] = $b1;
$spec[1] = (int)($data / ($b1 + $b2));
$spec[2] = (int)($ecc / ($b1 + $b2));
$spec[3] = $b2;
$spec[4] = $spec[1] + 1;
}
}
// Alignment pattern ---------------------------------------------------
// Positions of alignment patterns.
// This array includes only the second and the third position of the
// alignment patterns. Rest of them can be calculated from the distance
// between them.
// See Table 1 in Appendix E (pp.71) of JIS X0510:2004.
public static $alignmentPattern = array(
array( 0, 0),
array( 0, 0), array(18, 0), array(22, 0), array(26, 0), array(30, 0), // 1- 5
array(34, 0), array(22, 38), array(24, 42), array(26, 46), array(28, 50), // 6-10
array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48), //11-15
array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62), //16-20
array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58), //21-25
array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52), //26-30
array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54), //31-35
array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58), //35-40
);
/** --------------------------------------------------------------------
* Put an alignment marker.
* @param frame
* @param width
* @param ox,oy center coordinate of the pattern
*/
public static function putAlignmentMarker(array &$frame, $ox, $oy)
{
$finder = array(
"\xa1\xa1\xa1\xa1\xa1",
"\xa1\xa0\xa0\xa0\xa1",
"\xa1\xa0\xa1\xa0\xa1",
"\xa1\xa0\xa0\xa0\xa1",
"\xa1\xa1\xa1\xa1\xa1"
);
$yStart = $oy-2;
$xStart = $ox-2;
for($y=0; $y<5; $y++) {
QRstr::set($frame, $xStart, $yStart+$y, $finder[$y]);
}
}
//----------------------------------------------------------------------
public static function putAlignmentPattern($version, &$frame, $width)
{
if($version < 2)
return;
$d = self::$alignmentPattern[$version][1] - self::$alignmentPattern[$version][0];
if($d < 0) {
$w = 2;
} else {
$w = (int)(($width - self::$alignmentPattern[$version][0]) / $d + 2);
}
if($w * $w - 3 == 1) {
$x = self::$alignmentPattern[$version][0];
$y = self::$alignmentPattern[$version][0];
self::putAlignmentMarker($frame, $x, $y);
return;
}
$cx = self::$alignmentPattern[$version][0];
for($x=1; $x<$w - 1; $x++) {
self::putAlignmentMarker($frame, 6, $cx);
self::putAlignmentMarker($frame, $cx, 6);
$cx += $d;
}
$cy = self::$alignmentPattern[$version][0];
for($y=0; $y<$w-1; $y++) {
$cx = self::$alignmentPattern[$version][0];
for($x=0; $x<$w-1; $x++) {
self::putAlignmentMarker($frame, $cx, $cy);
$cx += $d;
}
$cy += $d;
}
}
// Version information pattern -----------------------------------------
// Version information pattern (BCH coded).
// See Table 1 in Appendix D (pp.68) of JIS X0510:2004.
// size: [QRSPEC_VERSION_MAX - 6]
public static $versionPattern = array(
0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d,
0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9,
0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75,
0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64,
0x27541, 0x28c69
);
//----------------------------------------------------------------------
public static function getVersionPattern($version)
{
if($version < 7 || $version > QRSPEC_VERSION_MAX)
return 0;
return self::$versionPattern[$version -7];
}
// Format information --------------------------------------------------
// See calcFormatInfo in tests/test_qrspec.c (orginal qrencode c lib)
public static $formatInfo = array(
array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976),
array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0),
array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed),
array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b)
);
public static function getFormatInfo($mask, $level)
{
if($mask < 0 || $mask > 7)
return 0;
if($level < 0 || $level > 3)
return 0;
return self::$formatInfo[$level][$mask];
}
// Frame ---------------------------------------------------------------
// Cache of initial frames.
public static $frames = array();
/** --------------------------------------------------------------------
* Put a finder pattern.
* @param frame
* @param width
* @param ox,oy upper-left coordinate of the pattern
*/
public static function putFinderPattern(&$frame, $ox, $oy)
{
$finder = array(
"\xc1\xc1\xc1\xc1\xc1\xc1\xc1",
"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
"\xc1\xc1\xc1\xc1\xc1\xc1\xc1"
);
for($y=0; $y<7; $y++) {
QRstr::set($frame, $ox, $oy+$y, $finder[$y]);
}
}
//----------------------------------------------------------------------
public static function createFrame($version)
{
$width = self::$capacity[$version][QRCAP_WIDTH];
$frameLine = str_repeat ("\0", $width);
$frame = array_fill(0, $width, $frameLine);
// Finder pattern
self::putFinderPattern($frame, 0, 0);
self::putFinderPattern($frame, $width - 7, 0);
self::putFinderPattern($frame, 0, $width - 7);
// Separator
$yOffset = $width - 7;
for($y=0; $y<7; $y++) {
$frame[$y][7] = "\xc0";
$frame[$y][$width - 8] = "\xc0";
$frame[$yOffset][7] = "\xc0";
$yOffset++;
}
$setPattern = str_repeat("\xc0", 8);
QRstr::set($frame, 0, 7, $setPattern);
QRstr::set($frame, $width-8, 7, $setPattern);
QRstr::set($frame, 0, $width - 8, $setPattern);
// Format info
$setPattern = str_repeat("\x84", 9);
QRstr::set($frame, 0, 8, $setPattern);
QRstr::set($frame, $width - 8, 8, $setPattern, 8);
$yOffset = $width - 8;
for($y=0; $y<8; $y++,$yOffset++) {
$frame[$y][8] = "\x84";
$frame[$yOffset][8] = "\x84";
}
// Timing pattern
for($i=1; $i<$width-15; $i++) {
$frame[6][7+$i] = chr(0x90 | ($i & 1));
$frame[7+$i][6] = chr(0x90 | ($i & 1));
}
// Alignment pattern
self::putAlignmentPattern($version, $frame, $width);
// Version information
if($version >= 7) {
$vinf = self::getVersionPattern($version);
$v = $vinf;
for($x=0; $x<6; $x++) {
for($y=0; $y<3; $y++) {
$frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));
$v = $v >> 1;
}
}
$v = $vinf;
for($y=0; $y<6; $y++) {
for($x=0; $x<3; $x++) {
$frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));
$v = $v >> 1;
}
}
}
// and a little bit...
$frame[$width - 8][8] = "\x81";
return $frame;
}
//----------------------------------------------------------------------
public static function debug($frame, $binary_mode = false)
{
if ($binary_mode) {
foreach ($frame as &$frameLine) {
$frameLine = join('<span class="m"> </span>', explode('0', $frameLine));
$frameLine = join('██', explode('1', $frameLine));
}
?>
<style>
.m { background-color: white; }
</style>
<?php
echo '<pre><tt><br/ ><br/ ><br/ > ';
echo join("<br/ > ", $frame);
echo '</tt></pre><br/ ><br/ ><br/ ><br/ ><br/ ><br/ >';
} else {
foreach ($frame as &$frameLine) {
$frameLine = join('<span class="m"> </span>', explode("\xc0", $frameLine));
$frameLine = join('<span class="m">▒</span>', explode("\xc1", $frameLine));
$frameLine = join('<span class="p"> </span>', explode("\xa0", $frameLine));
$frameLine = join('<span class="p">▒</span>', explode("\xa1", $frameLine));
$frameLine = join('<span class="s">◇</span>', explode("\x84", $frameLine)); //format 0
$frameLine = join('<span class="s">◆</span>', explode("\x85", $frameLine)); //format 1
$frameLine = join('<span class="x">☢</span>', explode("\x81", $frameLine)); //special bit
$frameLine = join('<span class="c"> </span>', explode("\x90", $frameLine)); //clock 0
$frameLine = join('<span class="c">◷</span>', explode("\x91", $frameLine)); //clock 1
$frameLine = join('<span class="f"> </span>', explode("\x88", $frameLine)); //version
$frameLine = join('<span class="f">▒</span>', explode("\x89", $frameLine)); //version
$frameLine = join('♦', explode("\x01", $frameLine));
$frameLine = join('⋅', explode("\0", $frameLine));
}
?>
<style>
.p { background-color: yellow; }
.m { background-color: #00FF00; }
.s { background-color: #FF0000; }
.c { background-color: aqua; }
.x { background-color: pink; }
.f { background-color: gold; }
</style>
<?php
echo "<pre><tt>";
echo join("<br/ >", $frame);
echo "</tt></pre>";
}
}
//----------------------------------------------------------------------
public static function serial($frame)
{
return gzcompress(join("\n", $frame), 9);
}
//----------------------------------------------------------------------
public static function unserial($code)
{
return explode("\n", gzuncompress($code));
}
//----------------------------------------------------------------------
public static function newFrame($version)
{
if($version < 1 || $version > QRSPEC_VERSION_MAX)
return null;
if(!isset(self::$frames[$version])) {
$fileName = QR_CACHE_DIR.'frame_'.$version.'.dat';
if (QR_CACHEABLE) {
if (file_exists($fileName)) {
self::$frames[$version] = self::unserial(file_get_contents($fileName));
} else {
self::$frames[$version] = self::createFrame($version);
file_put_contents($fileName, self::serial(self::$frames[$version]));
}
} else {
self::$frames[$version] = self::createFrame($version);
}
}
if(is_null(self::$frames[$version]))
return null;
return self::$frames[$version];
}
//----------------------------------------------------------------------
public static function rsBlockNum($spec) { return $spec[0] + $spec[3]; }
public static function rsBlockNum1($spec) { return $spec[0]; }
public static function rsDataCodes1($spec) { return $spec[1]; }
public static function rsEccCodes1($spec) { return $spec[2]; }
public static function rsBlockNum2($spec) { return $spec[3]; }
public static function rsDataCodes2($spec) { return $spec[4]; }
public static function rsEccCodes2($spec) { return $spec[2]; }
public static function rsDataLength($spec) { return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]); }
public static function rsEccLength($spec) { return ($spec[0] + $spec[3]) * $spec[2]; }
}
//---- qrimage.php -----------------------------
/*
* PHP QR Code encoder
*
* Image output of code using GD2
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
define('QR_IMAGE', true);
class QRimage {
//----------------------------------------------------------------------
public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE)
{
$image = self::image($frame, $pixelPerPoint, $outerFrame);
if ($filename === false) {
Header("Content-type: image/png");
ImagePng($image);
} else {
if($saveandprint===TRUE){
ImagePng($image, $filename);
header("Content-type: image/png");
ImagePng($image);
}else{
ImagePng($image, $filename);
}
}
ImageDestroy($image);
}
//----------------------------------------------------------------------
public static function jpg($frame, $filename = false, $pixelPerPoint = 8, $outerFrame = 4, $q = 85)
{
$image = self::image($frame, $pixelPerPoint, $outerFrame);
if ($filename === false) {
Header("Content-type: image/jpeg");
ImageJpeg($image, null, $q);
} else {
ImageJpeg($image, $filename, $q);
}
ImageDestroy($image);
}
//----------------------------------------------------------------------
private static function image($frame, $pixelPerPoint = 4, $outerFrame = 4)
{
$h = count($frame);
$w = strlen($frame[0]);
$imgW = $w + 2*$outerFrame;
$imgH = $h + 2*$outerFrame;
$base_image =ImageCreate($imgW, $imgH);
$col[0] = ImageColorAllocate($base_image,255,255,255);
$col[1] = ImageColorAllocate($base_image,0,0,0);
imagefill($base_image, 0, 0, $col[0]);
for($y=0; $y<$h; $y++) {
for($x=0; $x<$w; $x++) {
if ($frame[$y][$x] == '1') {
ImageSetPixel($base_image,$x+$outerFrame,$y+$outerFrame,$col[1]);
}
}
}
$target_image =ImageCreate($imgW * $pixelPerPoint, $imgH * $pixelPerPoint);
ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $imgW * $pixelPerPoint, $imgH * $pixelPerPoint, $imgW, $imgH);
ImageDestroy($base_image);
return $target_image;
}
public static function pngString($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE)
{
$image = self::image($frame, $pixelPerPoint, $outerFrame);
if ($filename === false) {
ImagePng($image);
} else {
if($saveandprint===TRUE){
ImagePng($image, $filename);
ImagePng($image);
}else{
ImagePng($image, $filename);
}
}
ImageDestroy($image);
}
}
//---- qrinput.php -----------------------------
/*
* PHP QR Code encoder
*
* Input encoding class
*
* Based on libqrencode C library distributed under LGPL 2.1
* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
define('STRUCTURE_HEADER_BITS', 20);
define('MAX_STRUCTURED_SYMBOLS', 16);
class QRinputItem {
public $mode;
public $size;
public $data;
public $bstream;
public function __construct($mode, $size, $data, $bstream = null)
{
$setData = array_slice($data, 0, $size);
if (count($setData) < $size) {
$setData = array_merge($setData, array_fill(0,$size-count($setData),0));
}
if(!QRinput::check($mode, $size, $setData)) {
throw new Exception('Error m:'.$mode.',s:'.$size.',d:'.join(',',$setData));
return null;
}
$this->mode = $mode;
$this->size = $size;
$this->data = $setData;
$this->bstream = $bstream;
}
//----------------------------------------------------------------------
public function encodeModeNum($version)
{
try {
$words = (int)($this->size / 3);
$bs = new QRbitstream();
$val = 0x1;
$bs->appendNum(4, $val);
$bs->appendNum(QRspec::lengthIndicator(QR_MODE_NUM, $version), $this->size);
for($i=0; $i<$words; $i++) {
$val = (ord($this->data[$i*3 ]) - ord('0')) * 100;
$val += (ord($this->data[$i*3+1]) - ord('0')) * 10;
$val += (ord($this->data[$i*3+2]) - ord('0'));
$bs->appendNum(10, $val);
}
if($this->size - $words * 3 == 1) {
$val = ord($this->data[$words*3]) - ord('0');
$bs->appendNum(4, $val);
} else if($this->size - $words * 3 == 2) {
$val = (ord($this->data[$words*3 ]) - ord('0')) * 10;
$val += (ord($this->data[$words*3+1]) - ord('0'));
$bs->appendNum(7, $val);
}
$this->bstream = $bs;
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function encodeModeAn($version)
{
try {
$words = (int)($this->size / 2);
$bs = new QRbitstream();
$bs->appendNum(4, 0x02);
$bs->appendNum(QRspec::lengthIndicator(QR_MODE_AN, $version), $this->size);
for($i=0; $i<$words; $i++) {
$val = (int)QRinput::lookAnTable(ord($this->data[$i*2 ])) * 45;
$val += (int)QRinput::lookAnTable(ord($this->data[$i*2+1]));
$bs->appendNum(11, $val);
}
if($this->size & 1) {
$val = QRinput::lookAnTable(ord($this->data[$words * 2]));
$bs->appendNum(6, $val);
}
$this->bstream = $bs;
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function encodeMode8($version)
{
try {
$bs = new QRbitstream();
$bs->appendNum(4, 0x4);
$bs->appendNum(QRspec::lengthIndicator(QR_MODE_8, $version), $this->size);
for($i=0; $i<$this->size; $i++) {
$bs->appendNum(8, ord($this->data[$i]));
}
$this->bstream = $bs;
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function encodeModeKanji($version)
{
try {
$bs = new QRbitrtream();
$bs->appendNum(4, 0x8);
$bs->appendNum(QRspec::lengthIndicator(QR_MODE_KANJI, $version), (int)($this->size / 2));
for($i=0; $i<$this->size; $i+=2) {
$val = (ord($this->data[$i]) << 8) | ord($this->data[$i+1]);
if($val <= 0x9ffc) {
$val -= 0x8140;
} else {
$val -= 0xc140;
}
$h = ($val >> 8) * 0xc0;
$val = ($val & 0xff) + $h;
$bs->appendNum(13, $val);
}
$this->bstream = $bs;
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function encodeModeStructure()
{
try {
$bs = new QRbitstream();
$bs->appendNum(4, 0x03);
$bs->appendNum(4, ord($this->data[1]) - 1);
$bs->appendNum(4, ord($this->data[0]) - 1);
$bs->appendNum(8, ord($this->data[2]));
$this->bstream = $bs;
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function estimateBitStreamSizeOfEntry($version)
{
$bits = 0;
if($version == 0)
$version = 1;
switch($this->mode) {
case QR_MODE_NUM: $bits = QRinput::estimateBitsModeNum($this->size); break;
case QR_MODE_AN: $bits = QRinput::estimateBitsModeAn($this->size); break;
case QR_MODE_8: $bits = QRinput::estimateBitsMode8($this->size); break;
case QR_MODE_KANJI: $bits = QRinput::estimateBitsModeKanji($this->size);break;
case QR_MODE_STRUCTURE: return STRUCTURE_HEADER_BITS;
default:
return 0;
}
$l = QRspec::lengthIndicator($this->mode, $version);
$m = 1 << $l;
$num = (int)(($this->size + $m - 1) / $m);
$bits += $num * (4 + $l);
return $bits;
}
//----------------------------------------------------------------------
public function encodeBitStream($version)
{
try {
unset($this->bstream);
$words = QRspec::maximumWords($this->mode, $version);
if($this->size > $words) {
$st1 = new QRinputItem($this->mode, $words, $this->data);
$st2 = new QRinputItem($this->mode, $this->size - $words, array_slice($this->data, $words));
$st1->encodeBitStream($version);
$st2->encodeBitStream($version);
$this->bstream = new QRbitstream();
$this->bstream->append($st1->bstream);
$this->bstream->append($st2->bstream);
unset($st1);
unset($st2);
} else {
$ret = 0;
switch($this->mode) {
case QR_MODE_NUM: $ret = $this->encodeModeNum($version); break;
case QR_MODE_AN: $ret = $this->encodeModeAn($version); break;
case QR_MODE_8: $ret = $this->encodeMode8($version); break;
case QR_MODE_KANJI: $ret = $this->encodeModeKanji($version);break;
case QR_MODE_STRUCTURE: $ret = $this->encodeModeStructure(); break;
default:
break;
}
if($ret < 0)
return -1;
}
return $this->bstream->size();
} catch (Exception $e) {
return -1;
}
}
};
//##########################################################################
class QRinput {
public $items;
private $version;
private $level;
//----------------------------------------------------------------------
public function __construct($version = 0, $level = QR_ECLEVEL_L)
{
if ($version < 0 || $version > QRSPEC_VERSION_MAX || $level > QR_ECLEVEL_H) {
throw new Exception('Invalid version no');
return NULL;
}
$this->version = $version;
$this->level = $level;
}
//----------------------------------------------------------------------
public function getVersion()
{
return $this->version;
}
//----------------------------------------------------------------------
public function setVersion($version)
{
if($version < 0 || $version > QRSPEC_VERSION_MAX) {
throw new Exception('Invalid version no');
return -1;
}
$this->version = $version;
return 0;
}
//----------------------------------------------------------------------
public function getErrorCorrectionLevel()
{
return $this->level;
}
//----------------------------------------------------------------------
public function setErrorCorrectionLevel($level)
{
if($level > QR_ECLEVEL_H) {
throw new Exception('Invalid ECLEVEL');
return -1;
}
$this->level = $level;
return 0;
}
//----------------------------------------------------------------------
public function appendEntry(QRinputItem $entry)
{
$this->items[] = $entry;
}
//----------------------------------------------------------------------
public function append($mode, $size, $data)
{
try {
$entry = new QRinputItem($mode, $size, $data);
$this->items[] = $entry;
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function insertStructuredAppendHeader($size, $index, $parity)
{
if( $size > MAX_STRUCTURED_SYMBOLS ) {
throw new Exception('insertStructuredAppendHeader wrong size');
}
if( $index <= 0 || $index > MAX_STRUCTURED_SYMBOLS ) {
throw new Exception('insertStructuredAppendHeader wrong index');
}
$buf = array($size, $index, $parity);
try {
$entry = new QRinputItem(QR_MODE_STRUCTURE, 3, buf);
array_unshift($this->items, $entry);
return 0;
} catch (Exception $e) {
return -1;
}
}
//----------------------------------------------------------------------
public function calcParity()
{
$parity = 0;
foreach($this->items as $item) {
if($item->mode != QR_MODE_STRUCTURE) {
for($i=$item->size-1; $i>=0; $i--) {
$parity ^= $item->data[$i];
}
}
}
return $parity;
}
//----------------------------------------------------------------------
public static function checkModeNum($size, $data)
{
for($i=0; $i<$size; $i++) {
if((ord($data[$i]) < ord('0')) || (ord($data[$i]) > ord('9'))){
return false;
}
}
return true;
}
//----------------------------------------------------------------------
public static function estimateBitsModeNum($size)
{
$w = (int)$size / 3;
$bits = $w * 10;
switch($size - $w * 3) {
case 1:
$bits += 4;
break;
case 2:
$bits += 7;
break;
default:
break;
}
return $bits;
}
//----------------------------------------------------------------------
public static $anTable = array(
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1,
-1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
);
//----------------------------------------------------------------------
public static function lookAnTable($c)
{
return (($c > 127)?-1:self::$anTable[$c]);
}
//----------------------------------------------------------------------
public static function checkModeAn($size, $data)
{
for($i=0; $i<$size; $i++) {
if (self::lookAnTable(ord($data[$i])) == -1) {
return false;
}
}
return true;
}
//----------------------------------------------------------------------
public static function estimateBitsModeAn($size)
{
$w = (int)($size / 2);
$bits = $w * 11;
if($size & 1) {
$bits += 6;
}
return $bits;
}
//----------------------------------------------------------------------
public static function estimateBitsMode8($size)
{
return $size * 8;
}
//----------------------------------------------------------------------
public function estimateBitsModeKanji($size)
{
return (int)(($size / 2) * 13);
}
//----------------------------------------------------------------------
public static function checkModeKanji($size, $data)
{
if($size & 1)
return false;
for($i=0; $i<$size; $i+=2) {
$val = (ord($data[$i]) << 8) | ord($data[$i+1]);
if( $val < 0x8140
|| ($val > 0x9ffc && $val < 0xe040)
|| $val > 0xebbf) {
return false;
}
}
return true;
}
/***********************************************************************
* Validation
**********************************************************************/
public static function check($mode, $size, $data)
{
if($size <= 0)
return false;
switch($mode) {
case QR_MODE_NUM: return self::checkModeNum($size, $data); break;
case QR_MODE_AN: return self::checkModeAn($size, $data); break;
case QR_MODE_KANJI: return self::checkModeKanji($size, $data); break;
case QR_MODE_8: return true; break;
case QR_MODE_STRUCTURE: return true; break;
default:
break;
}
return false;
}
//----------------------------------------------------------------------
public function estimateBitStreamSize($version)
{
$bits = 0;
foreach($this->items as $item) {
$bits += $item->estimateBitStreamSizeOfEntry($version);
}
return $bits;
}
//----------------------------------------------------------------------
public function estimateVersion()
{
$version = 0;
$prev = 0;
do {
$prev = $version;
$bits = $this->estimateBitStreamSize($prev);
$version = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);
if ($version < 0) {
return -1;
}
} while ($version > $prev);
return $version;
}
//----------------------------------------------------------------------
public static function lengthOfCode($mode, $version, $bits)
{
$payload = $bits - 4 - QRspec::lengthIndicator($mode,