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wytk.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" name="viewport"
content="width=device-width, initial-scale=1, maximum-scale=5, user-scalable=yes">
<title>无影坦克2代</title>
<!--
67ef0b7c574635c6f8a5d5e0caf24944
4cc52c6851db9ecdfb657ec705754e1b
2b8cf305d8e8fc2ca657eda60aa0b6ea
b7fcb8a5e29bcc2cd2f9213341a67901
-->
</head>
<body>
<style>
img {
max-width: 100%
}
body {
font-family: Arial, sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-image: url('background1.jpg');
background-size: cover;
background-position: center;
margin: 0;
}
#info2 {
word-break: break-all
}
summary {
font-size: 1.2rem
}
a {
color: #1080a0
}
</style>
<div style="padding:0 16px">
<h1>无影坦克𝐈𝐈</h1>
<details>
<summary>制作坦克</summary>
<span>选择表图</span><br><input type="file" id="ipt1" onchange="ipt1()" accept="image/*">
<br>
<span>选择里图</span><br><input type="file" id="ipt" onchange="ipt()" accept="image/*">
<br>
<span>添加备注</span><input id="beizhucheckbox" type="checkbox" checked="true">
<br><input type="text" id="beizhu" style="width:150px" value="TK">
<br>
<span>表图压缩度 </span><select id="select" onchange="select()">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4" selected="true">4</option>
</select>
<br>
<span id="info1">建议里图大小：小于2M</span>
<br>
<button onclick="a1()">合成图片</button>
<br>
<img id="img1">
<br>
<a href="" id="a1" style="display:none">保存图片</a>
</details>
<details>
<summary>坦克现形</summary>
<input type="file" id="ipt2" onchange="ipt2()" accept="image/*">
<div id="info2a" style="display:none">
<span id="info2"></span><span> </span><a href="" id="a2">保存图片</a>
</div>
<img src="" id="img2">
</details>
<!-- <details open="true">
<summary>使用须知</summary>
<div>
<span style="color:#ee6622"><span
style="font-weight:bold">免责声明</span> 本页面仅供技术研究使用，使用者做出的行为及后果作者概不负责！</span><br>
<br>说明<br>
原理是lsb隐写，不是类似图种的东西，压缩软件打不开的<br>
表图压缩度越高，合成的图片体积越小，但噪点越多<br>
百度贴吧会自动压缩大图，所以里图大小建议不要过大。百度贴吧ios端似乎对所有图片都压缩，导致ios发不成功<br>
发送时不要加水印，合成时需保存原图，解密时务必上传原图<br>
建议不要在百度浏览器或贴吧自带浏览器内使用此程序<br>
部分手机浏览器使用时可能会因为兼容性问题导致无法保存图片，建议换谷歌浏览器或者使用电脑<br>
<br>
下载此网页，为我省点流量：<a id="bc" download="wytk.html">下载</a> <a
href="https://github.com/wytk/wytk.github.io/archive/main.zip">下载2</a><br>
下载之后是个html文件，(大概)可以用浏览器直接打开使用
</div>
</details> -->
</div>
<script>
function utf8Encode(string) {
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
} else if ((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
} else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
}
function utf8Decode(inputStr) {
var outputStr = "";
var code1, code2, code3, code4;
for (var i = 0; i < inputStr.length; i++) {
code1 = inputStr.charCodeAt(i);
if (code1 < 128) {
outputStr += String.fromCharCode(code1);
} else if (code1 < 224) {
code2 = inputStr.charCodeAt(++i);
outputStr += String.fromCharCode(((code1 & 31) << 6) | (code2 & 63));
} else if (code1 < 240) {
code2 = inputStr.charCodeAt(++i);
code3 = inputStr.charCodeAt(++i);
outputStr += String.fromCharCode(((code1 & 15) << 12) | ((code2 & 63) << 6) | (code3 & 63));
} else {
code2 = inputStr.charCodeAt(++i);
code3 = inputStr.charCodeAt(++i);
code4 = inputStr.charCodeAt(++i);
outputStr += String.fromCharCode(((code1 & 7) << 18) | ((code2 & 63) << 12) | ((code3 & 63) << 6) | (code2 & 63));
}
}
return outputStr;
}
</script>
<script>
let IMG1 = new Image();
let IMGINFO = [];
let IMG2 = new Image();
let MODE = 4;
let SRC1 = "";
let SRC2 = "";
function a1() {
requestAnimationFrame(function () {
requestAnimationFrame(function () {
try {
let f = gen(MODE);
if (SRC1) { URL.revokeObjectURL(SRC1) }
SRC1 = URL.createObjectURL(f);
document.getElementById("a1").href = SRC1;
document.getElementById("img1").src = SRC1;
document.getElementById("a1").style.display = "inline";
document.getElementById("a1").download = "download.png"
} catch (e) { alert("图片生成失败") }
})
})
}
function a2() {
try {
let f = sol();
if (SRC2) { URL.revokeObjectURL(SRC2) }
SRC2 = URL.createObjectURL(f[0]);
document.getElementById("a2").href = SRC2;
document.getElementById("img2").src = SRC2;
document.getElementById("info2a").style.display = "block";
document.getElementById("a2").download = f[1];
document.getElementById("info2").innerHTML = f[1]
} catch (e) { alert("图片读取失败") }
}
function select() {
let l = [0, "500K", "1M", "1.5M", "2M"]
MODE = parseInt(document.getElementById("select").value);
document.getElementById("info1").innerHTML = "建议里图大小：小于" + l[MODE]
}
function ipt1() {
var oFReader = new FileReader();
var ofile = document.getElementById("ipt1").files[0];
oFReader.readAsDataURL(ofile);
oFReader.onloadend = function (oFRevent) {
var osrc = oFRevent.target.result;
IMG1.src = osrc;
}
}
function ipt() {
var oFReader = new FileReader();
var ofile = document.getElementById("ipt").files[0];
oFReader.readAsArrayBuffer(ofile);
oFReader.onloadend = function (oFRevent) {
try {
let l = new Uint8Array(oFRevent.target.result);
IMGINFO = [[l.length, utf8Encode(ofile.name), ofile.type], l];
} catch (e) { }
}
}
function ipt2() {
var oFReader = new FileReader();
var ofile = document.getElementById("ipt2").files[0];
oFReader.readAsDataURL(ofile);
oFReader.onloadend = function (oFRevent) {
var osrc = oFRevent.target.result;
IMG2.src = osrc;
IMG2.onload = function () {
a2()
}
}
}
function dataURLtoBlob(dataurl) {
var arr = dataurl.split(',');
var _arr = arr[1];
var mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(_arr),
n = bstr.length,
u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr.buffer], { type: mime });
}
function gen(mode) {
let modelist = [0, 3, mode];
let word = IMGINFO[0].join(String.fromCharCode(1)) + String.fromCharCode(0);
let length = 2 + parseInt((word.length + IMGINFO[1].length) * 8 / (mode * 3))
let ax = Math.sqrt(length / (IMG1.width * IMG1.height));
let wid = Math.ceil(IMG1.width * ax);
let hit = Math.ceil(IMG1.height * ax);
let cv = document.createElement("canvas");
let cvd = cv.getContext("2d");
cv.width = wid;
cv.height = hit;
cvd.fillStyle = "#ffffff";
cvd.fillRect(0, 0, wid, hit);
cvd.drawImage(IMG1, 0, 0, wid, hit);
if (document.getElementById("beizhucheckbox").checked) {
let w = document.getElementById("beizhu").value;
cvd.font = "16px Arial";
cvd.textBaseline = "middle";
cvd.fillStyle = "rgba(255,255,255,0.75)";
cvd.fillRect(0, 0, cvd.measureText(w).width + 8, 28);
cvd.fillStyle = "#000000";
cvd.fillText(w, 4, 14, wid - 8);
}
return new File([dataURLtoBlob(en(mode, modelist, cvd.getImageData(0, 0, wid, hit), word, IMGINFO[1], " wytk.github.io"))], "download.png", { type: "image/png" })
}
function sol() {
let cv = document.createElement("canvas");
let cvd = cv.getContext("2d");
cv.width = IMG2.width;
cv.height = IMG2.height;
cvd.drawImage(IMG2, 0, 0);
let imgdata = cvd.getImageData(0, 0, IMG2.width, IMG2.height);
if (imgdata.data[0] % 8 != 0 || imgdata.data[1] % 8 != 3 || imgdata.data[2] % 8 == 0 || imgdata.data[2] % 8 > 5) {
throw "error"
}
let klist = de(imgdata.data[2] % 8, imgdata);
let file = new File([klist[1].buffer], utf8Decode(klist[0][1]), { type: klist[0][2] })
return [file, utf8Decode(klist[0][1])]
}
function closer(mode, m, n) {
let a = m % mode
if (255 - m <= mode / 2 || m < mode / 2) {
return parseInt(m / mode) * mode + n
} else if (n - a > mode / 2) {
return parseInt(m / mode) * mode + n - mode
} else if (a - n >= mode / 2) {
return parseInt(m / mode) * mode + n + mode
} else {
return parseInt(m / mode) * mode + n
}
}
function en(mode, fplist, imgdata, aword, blist, cword) {
let aa = Math.ceil(8 / 3 / mode);
let n = imgdata.width * imgdata.height;
let j = 0;
let k = "";
let i = 1;
let mlist = [1, 2, 4, 8, 16, 32, 64, 128];
let cv = document.createElement("canvas");
let cvd = cv.getContext("2d");
cv.width = imgdata.width;
cv.height = imgdata.height;
imgdata.data[0] = closer(8, imgdata.data[0], fplist[0]);
imgdata.data[1] = closer(8, imgdata.data[1], fplist[1]);
imgdata.data[2] = closer(8, imgdata.data[2], fplist[2]);
while (i < n && j < aword.length) {
k = k + (aword.charCodeAt(j) + 256).toString(2).slice(1);
for (let ii = 0; ii < aa; ii++) {
if (k.length >= mode * 3) {
imgdata.data[4 * i] = closer(mlist[mode], imgdata.data[4 * i], parseInt(k.slice(0, mode), 2));
imgdata.data[4 * i + 1] = closer(mlist[mode], imgdata.data[4 * i + 1], parseInt(k.slice(mode, mode * 2), 2));
imgdata.data[4 * i + 2] = closer(mlist[mode], imgdata.data[4 * i + 2], parseInt(k.slice(mode * 2, mode * 3), 2));
k = k.slice(mode * 3);
i++
}
}
j++
}
j = 0;
while (i < n && j < blist.length) {
k = k + (blist[j] + 256).toString(2).slice(1);
for (let ii = 0; ii < aa; ii++) {
if (k.length >= mode * 3) {
imgdata.data[4 * i] = closer(mlist[mode], imgdata.data[4 * i], parseInt(k.slice(0, mode), 2));
imgdata.data[4 * i + 1] = closer(mlist[mode], imgdata.data[4 * i + 1], parseInt(k.slice(mode, mode * 2), 2));
imgdata.data[4 * i + 2] = closer(mlist[mode], imgdata.data[4 * i + 2], parseInt(k.slice(mode * 2, mode * 3), 2));
k = k.slice(mode * 3);
i++
}
}
j++
}
j = 0;
while (i < n) {
k = k + (cword.charCodeAt(j % cword.length) + 256).toString(2).slice(1);
for (let ii = 0; ii < aa; ii++) {
if (k.length >= mode * 3) {
imgdata.data[4 * i] = closer(mlist[mode], imgdata.data[4 * i], parseInt(k.slice(0, mode), 2));
imgdata.data[4 * i + 1] = closer(mlist[mode], imgdata.data[4 * i + 1], parseInt(k.slice(mode, mode * 2), 2));
imgdata.data[4 * i + 2] = closer(mlist[mode], imgdata.data[4 * i + 2], parseInt(k.slice(mode * 2, mode * 3), 2));
k = k.slice(mode * 3);
i++
}
}
j++
}
cvd.putImageData(imgdata, 0, 0);
return cv.toDataURL();
}
function de(mode, imgdata) {
let aa = Math.ceil(3 * mode / 8);
let n = imgdata.width * imgdata.height;
let j = 0;
let k = "";
let i = 1;
let mlist = [1, 2, 4, 8, 16, 32, 64, 128];
let word = "";
let blist//=new Uint8Array();
let blength = 0;
while (i < n && (word.length == 0 || word.slice(-1).charCodeAt(0) > 0)) {
k = k + (imgdata.data[4 * i] + 256).toString(2).slice(-mode);
k = k + (imgdata.data[4 * i + 1] + 256).toString(2).slice(-mode);
k = k + (imgdata.data[4 * i + 2] + 256).toString(2).slice(-mode);
i++
for (let ii = 0; ii < aa; ii++) {
if (k.length >= 8 && (word.length == 0 || word.slice(-1).charCodeAt(0) > 0)) {
word = word + String.fromCharCode(parseInt(k.slice(0, 8), 2));
k = k.slice(8);
}
}
}
//word分隔符:","
blength = parseInt(word.split(String.fromCharCode(1))[0]);
if (!(blength > -1)) {
throw "error"
}
if (!(word.split(String.fromCharCode(1)).length > 2)) {
throw "error"
}
blist = new Uint8Array(blength);
if (k.length >= 8 && j < blength) {
blist[j] = parseInt(k.slice(0, 8), 2);
k = k.slice(8);
j++
}
while (i < n && j < blength) {
k = k + (imgdata.data[4 * i] + 256).toString(2).slice(-mode);
k = k + (imgdata.data[4 * i + 1] + 256).toString(2).slice(-mode);
k = k + (imgdata.data[4 * i + 2] + 256).toString(2).slice(-mode);
i++
for (let ii = 0; ii < aa; ii++) {
if (k.length >= 8 && j < blength) {
blist[j] = parseInt(k.slice(0, 8), 2);
k = k.slice(8);
j++
}
}
}
return [word.split(String.fromCharCode(0))[0].split(String.fromCharCode(1)), blist]
}
window.onload = function () {
let w = "<!DOCTYPE " + "html>" + document.documentElement.outerHTML;
document.getElementById("bc").href = URL.createObjectURL(new Blob([w], { type: "text/html" }))
}
</script>
</body>
</html>