commit 6803b8b55efe5cb8f884a8c850303ab0672cae7e
Author: 蒋小陌 <xiaomo.drip@gmail.com>
Date:   Sat Jun 1 10:41:38 2024 +0800

    111

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ad46b30
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,61 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# next.js build output
+.next
diff --git a/Cakefile b/Cakefile
new file mode 100644
index 0000000..37a81fd
--- /dev/null
+++ b/Cakefile
@@ -0,0 +1,21 @@
+{print} = require 'util'
+{spawn} = require 'child_process'
+
+build = () ->
+    os = require 'os'
+    if os.platform() == 'win32'
+        coffeeCmd = 'coffee.cmd'
+    else
+        coffeeCmd = 'coffee'
+    coffee = spawn coffeeCmd, ['-c', '-o', 'build', 'src']
+    coffee.stderr.on 'data', (data) ->
+        process.stderr.write data.toString()
+    coffee.stdout.on 'data', (data) ->
+        print data.toString()
+    coffee.on 'exit', (code) ->
+        if code != 0
+            process.exit code
+
+task 'build', 'Build ./ from src/', ->
+    build()
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5baf914
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# sfz
+专门用于给身份证等敏感证件打码的工具,完全基于浏览器本地API,无任何网络请求
diff --git a/build/script.js b/build/script.js
new file mode 100644
index 0000000..30b596d
--- /dev/null
+++ b/build/script.js
@@ -0,0 +1,161 @@
+// Generated by CoffeeScript 2.7.0
+(function() {
+  var $, autoRefresh, canvas, dataURItoBlob, drawText, file, generateFileName, graph, image, input, inputItems, makeStyle, readFile, redraw, refresh, textCtx;
+
+  $ = function(sel) {
+    return document.querySelector(sel);
+  };
+
+  inputItems = ['text', 'color', 'alpha', 'angle', 'space', 'size'];
+
+  input = {};
+
+  image = $('#image');
+
+  graph = $('#graph');
+
+  refresh = $('#refresh');
+
+  autoRefresh = $('#auto-refresh');
+
+  file = null;
+
+  canvas = null;
+
+  textCtx = null;
+
+  redraw = null;
+
+  dataURItoBlob = function(dataURI) {
+    var arr, binStr, i, k, len, ref;
+    binStr = atob((dataURI.split(','))[1]);
+    len = binStr.length;
+    arr = new Uint8Array(len);
+    for (i = k = 0, ref = len - 1; (0 <= ref ? k <= ref : k >= ref); i = 0 <= ref ? ++k : --k) {
+      arr[i] = binStr.charCodeAt(i);
+    }
+    return new Blob([arr], {
+      type: 'image/png'
+    });
+  };
+
+  generateFileName = function() {
+    var d, pad;
+    pad = function(n) {
+      if (n < 10) {
+        return '0' + n;
+      } else {
+        return n;
+      }
+    };
+    d = new Date();
+    return '' + d.getFullYear() + '-' + (pad(d.getMonth() + 1)) + '-' + (pad(d.getDate())) + ' ' + (pad(d.getHours())) + (pad(d.getMinutes())) + (pad(d.getSeconds())) + '.png';
+  };
+
+  readFile = function() {
+    var fileReader;
+    if (file == null) {
+      return;
+    }
+    fileReader = new FileReader();
+    fileReader.onload = function() {
+      var img;
+      img = new Image();
+      img.onload = function() {
+        var ctx;
+        canvas = document.createElement('canvas');
+        canvas.width = img.width;
+        canvas.height = img.height;
+        textCtx = null;
+        ctx = canvas.getContext('2d');
+        ctx.drawImage(img, 0, 0);
+        redraw = function() {
+          ctx.clearRect(0, 0, canvas.width, canvas.height);
+          return ctx.drawImage(img, 0, 0);
+        };
+        drawText();
+        graph.innerHTML = '';
+        graph.appendChild(canvas);
+        return canvas.addEventListener('click', function() {
+          var blob, imageData, link;
+          link = document.createElement('a');
+          link.download = generateFileName();
+          imageData = canvas.toDataURL('image/png');
+          blob = dataURItoBlob(imageData);
+          link.href = URL.createObjectURL(blob);
+          graph.appendChild(link);
+          return setTimeout(function() {
+            link.click();
+            return graph.removeChild(link);
+          }, 100);
+        });
+      };
+      return img.src = fileReader.result;
+    };
+    return fileReader.readAsDataURL(file);
+  };
+
+  makeStyle = function() {
+    var match;
+    match = input.color.value.match(/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i);
+    return 'rgba(' + (parseInt(match[1], 16)) + ',' + (parseInt(match[2], 16)) + ',' + (parseInt(match[3], 16)) + ',' + input.alpha.value + ')';
+  };
+
+  drawText = function() {
+    var i, j, k, l, margin, ref, ref1, ref2, ref3, step, textSize, width, x, y;
+    if (canvas == null) {
+      return;
+    }
+    textSize = input.size.value * Math.max(15, (Math.min(canvas.width, canvas.height)) / 25);
+    if (textCtx != null) {
+      redraw();
+    } else {
+      textCtx = canvas.getContext('2d');
+    }
+    textCtx.save();
+    textCtx.translate(canvas.width / 2, canvas.height / 2);
+    textCtx.rotate(input.angle.value * Math.PI / 180);
+    textCtx.fillStyle = makeStyle();
+    textCtx.font = 'bold ' + textSize + 'px -apple-system,"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","WenQuanYi Micro Hei",sans-serif';
+    width = (textCtx.measureText(input.text.value)).width;
+    step = Math.sqrt((Math.pow(canvas.width, 2)) + (Math.pow(canvas.height, 2)));
+    margin = (textCtx.measureText('啊')).width;
+    x = Math.ceil(step / (width + margin));
+    y = Math.ceil((step / (input.space.value * textSize)) / 2);
+    for (i = k = ref = -x, ref1 = x; (ref <= ref1 ? k <= ref1 : k >= ref1); i = ref <= ref1 ? ++k : --k) {
+      for (j = l = ref2 = -y, ref3 = y; (ref2 <= ref3 ? l <= ref3 : l >= ref3); j = ref2 <= ref3 ? ++l : --l) {
+        textCtx.fillText(input.text.value, (width + margin) * i, input.space.value * textSize * j);
+      }
+    }
+    textCtx.restore();
+  };
+
+  image.addEventListener('change', function() {
+    var ref;
+    file = this.files[0];
+    if ((ref = file.type) !== 'image/png' && ref !== 'image/jpeg' && ref !== 'image/gif') {
+      return alert('仅支持 png, jpg, gif 图片格式');
+    }
+    return readFile();
+  });
+
+  inputItems.forEach(function(item) {
+    var el;
+    el = $('#' + item);
+    input[item] = el;
+    autoRefresh.addEventListener('change', function() {
+      if (this.checked) {
+        return refresh.setAttribute('disabled', 'disabled');
+      } else {
+        return refresh.removeAttribute('disabled');
+      }
+    });
+    el.addEventListener('input', function() {
+      if (autoRefresh.checked) {
+        return drawText();
+      }
+    });
+    return refresh.addEventListener('click', drawText);
+  });
+
+}).call(this);
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..cf9615b
--- /dev/null
+++ b/index.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"/>
+    <title>图片水印打码工具</title>
+    <style>
+        #container {
+            max-width: 500px;
+            margin: 30px auto;
+        }
+
+        h1 { margin: 0 }
+        p, article { margin: 0 0 20px 0 }
+        article { font-size: 14px; color: #777 }
+
+        label { color: blue; font-size: 17px }
+        p label { color: black; display: inline-block; margin-right: 5px; font-size: 15px }
+        p { font-size: 15px; line-height: 30px }
+        p > * { vertical-align: middle }
+
+        input#text { width: 100%; box-sizing: border-box; font-size: 16px; margin-bottom: 10px }
+        input[type=range] { width: 200px; height: 18px; }
+
+        canvas { box-sizing: border-box; width: 100%; border: 1px dashed #AAA; cursor: pointer }
+    </style>
+</head>
+    <div id="container">
+        <h1>图片水印打码工具</h1>
+        <article>安全地为你的图片加水印,无任何网络请求,特别适合各种敏感证件(身份证,驾照,护照等)。<a href="https://github.com/joyqi/sfz">Github地址</a></article>
+
+        <label for="image">第一步:先选择一张本地图片</label>
+        <p><input type="file" id="image" autocomplete="off"></p>
+
+        
+        <label for="text">第二步:输入需要打水印的文字</label>
+        <p><input type="text" id="text" placeholder="请输入文字" autocomplete="off" maxlength="30">
+        
+        <label for="color">颜色</label>
+        <input type="color" id="color" pattern="#[0-9A-Fa-f]{6}" autocomplete="off" value="#0000FF"><br>
+        
+        <label for="alpha">透明度</label>
+        <input type="range" id="alpha" min="0" max="1" step="0.05" autocomplete="off" value="0.15"><br>
+        
+        <label for="angle">角度</label>
+        <input type="range" id="angle" min="-90" max="90" step="3" autocomplete="off" value="45"><br>
+
+        <label for="space">间隔</label>
+        <input type="range" id="space" min="1" max="8" step="0.2" autocomplete="off" value="4"><br>
+        
+        <label for="size">字号</label>
+        <input type="range" id="size" min="0.5" max="3" step="0.05" autocomplete="off" value="1">
+        </p>
+        
+        <label for="text">第三步:点击图片下载</label>
+        <p>
+            <label for="auto-refresh">实时刷新</label>
+            <input type="checkbox" id="auto-refresh" autocomplete="off" checked>
+            <button id="refresh" disabled>刷新</button>
+        </p>
+        <p id="graph"></p>
+    </div>
+    <script src="./build/script.js"></script>
+</html>
diff --git a/src/script.coffee b/src/script.coffee
new file mode 100644
index 0000000..16ee9ba
--- /dev/null
+++ b/src/script.coffee
@@ -0,0 +1,137 @@
+$ = (sel) -> document.querySelector sel
+
+inputItems = ['text', 'color', 'alpha', 'angle', 'space', 'size']
+input = {}
+
+image = $ '#image'
+graph = $ '#graph'
+refresh = $ '#refresh'
+autoRefresh = $ '#auto-refresh'
+file = null
+canvas = null
+textCtx = null
+redraw = null
+
+dataURItoBlob = (dataURI) ->
+    binStr = atob (dataURI.split ',')[1]
+    len = binStr.length
+    arr = new Uint8Array len
+
+    for i in [0..len - 1]
+        arr[i] = binStr.charCodeAt i
+    new Blob [arr], type: 'image/png'
+
+
+generateFileName = ->
+    pad = (n) -> if n < 10 then '0' + n else n
+
+    d = new Date
+    '' + d.getFullYear() + '-' + (pad d.getMonth() + 1) + '-' + (pad d.getDate()) + ' ' + \
+        (pad d.getHours()) + (pad d.getMinutes()) + (pad d.getSeconds()) + '.png'
+
+
+readFile = ->
+    return if not file?
+
+    fileReader = new FileReader
+
+    fileReader.onload = ->
+        img = new Image
+        img.onload = ->
+            canvas = document.createElement 'canvas'
+            canvas.width = img.width
+            canvas.height = img.height
+            textCtx = null
+            
+            ctx = canvas.getContext '2d'
+            ctx.drawImage img, 0, 0
+
+            redraw = ->
+                ctx.clearRect 0, 0, canvas.width, canvas.height
+                ctx.drawImage img, 0, 0
+            
+            drawText()
+
+            graph.innerHTML = ''
+            graph.appendChild canvas
+
+            canvas.addEventListener 'click', ->
+                link = document.createElement 'a'
+                link.download = generateFileName()
+                imageData = canvas.toDataURL 'image/png'
+                blob = dataURItoBlob imageData
+                link.href = URL.createObjectURL blob
+                graph.appendChild link
+
+                setTimeout ->
+                    link.click()
+                    graph.removeChild link
+                , 100
+                
+
+
+        img.src = fileReader.result
+
+    fileReader.readAsDataURL file
+    
+
+makeStyle = ->
+    match = input.color.value.match /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i
+
+    'rgba(' + (parseInt match[1], 16) + ',' + (parseInt match[2], 16) + ',' \
+         + (parseInt match[3], 16) + ',' + input.alpha.value + ')'
+
+
+drawText = ->
+    return if not canvas?
+    textSize = input.size.value * Math.max 15, (Math.min canvas.width, canvas.height) / 25
+    
+    if textCtx?
+        redraw()
+    else
+        textCtx = canvas.getContext '2d'
+    
+    textCtx.save()
+    textCtx.translate(canvas.width / 2, canvas.height / 2)
+    textCtx.rotate (input.angle.value) * Math.PI / 180
+
+    textCtx.fillStyle = makeStyle()
+    textCtx.font = 'bold ' + textSize + 'px -apple-system,"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","WenQuanYi Micro Hei",sans-serif'
+    
+    width = (textCtx.measureText input.text.value).width
+    step = Math.sqrt (Math.pow canvas.width, 2) + (Math.pow canvas.height, 2)
+    margin = (textCtx.measureText '啊').width
+
+    x = Math.ceil step / (width + margin)
+    y = Math.ceil (step / (input.space.value * textSize)) / 2
+
+    for i in [-x..x]
+        for j in [-y..y]
+            textCtx.fillText input.text.value, (width + margin) * i, input.space.value * textSize * j
+    
+    textCtx.restore()
+    return
+
+
+image.addEventListener 'change', ->
+    file = @files[0]
+
+    return alert '仅支持 png, jpg, gif 图片格式' if file.type not in ['image/png', 'image/jpeg', 'image/gif']
+    readFile()
+
+
+inputItems.forEach (item) ->
+    el = $ '#' + item
+    input[item] = el
+
+    autoRefresh.addEventListener 'change', ->
+        if @checked
+            refresh.setAttribute 'disabled', 'disabled'
+        else
+            refresh.removeAttribute 'disabled'
+    
+    el.addEventListener 'input', ->
+        drawText() if autoRefresh.checked
+
+    refresh.addEventListener 'click', drawText
+