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picky.html
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<!doctype html>
<html>
<head>
<title>Picky</title>
<meta name="author" content="Textgain">
<meta charset="utf-8">
<style>
* {
color: #555;
font: 12px/1em Arial;
}
body {
margin: 25px;
}
.var {
margin: 5px;
}
.var a {
text-decoration: none;
}
label { /* " LABEL " */
display: inline-block;
width: 40px;
margin-right: 5px;
font-size: 0.75em;
text-align: right;
text-transform: uppercase;
}
input, select, textarea, button, .button {
outline: none;
}
input[type="text"],
input[type="number"] {
padding: 2px 0;
border: 0;
border-bottom: 1px solid #ccc;
}
input[type="text"],
input[type="number"],
textarea {
box-sizing: border-box;
width: 180px;
}
textarea {
height: 90px;
padding: 4px;
border: 1px solid #ccc;
}
.button {
display: inline-block;
padding: 8px;
border: 1px solid #ccc;
border-radius: 8px;
color: inherit;
background: #fff;
text-decoration: none;
}
.button:hover,
.button.hot {
color: white;
background: rgb(0,150,255);
border: 1px solid rgb(0,150,255);
}
.view {
position: absolute;
top: 40px;
left: 320px;
width: 720px;
height: 480px;
text-align: center;
/* border: 1px dotted red; */
}
.view div {
position: relative;
display: inline-block;
}
.view img {
min-width: 240px;
min-height: 240px;
max-width: 720px;
max-height: 480px;
border: 1px solid #ccc;
}
.view a {
position: absolute;
display: block;
min-width: 45px;
min-height: 1em;
padding: 8px;
border: 1px solid rgba(255,255,255,0.6);
border-radius: 8px;
color: white;
background: rgba(0,0,0,0.6);
text-decoration: none;
}
.view a#T { top: 0%; left: 50%; transform: translate(-50%, -50%); }
.view a#L { top: 50%; left: 0%; transform: translate(-50%, -50%); }
.view a#R { top: 50%; right: 0%; transform: translate(+50%, -50%); }
.view a#B { bottom: 0%; left: 50%; transform: translate(-50%, +50%); }
.view a:before,
.view a:after {
font-size: 0.75em;
}
.view a#T:empty:before {
content: '\25b2'; /* ▲ */
}
.view a#L:before {
content: '\25C0\ ';
}
.view a#R:after {
content: ' \25B6';
}
.view a#B:empty:before {
content: '\25bc';
}
#text {
margin-top: 25px;
width: 230px;
font-size: 1.2em;
line-height: 1.4em;
}
</style>
<script>
var images = []; // [File1, File2, ...]
var texts = {}; // {image: text}
var tags = {}; // {image: [tag1, tag2, ...]}
var index = 0;
var controls = {
'T' : '',
'L' : 'bad',
'R' : 'good',
'B' : ''
};
function $(id) {
return document.getElementById(id);
}
function readAsJSON(file, o) {
// Parse JSON-file & assign to object.
let f;
f = new FileReader();
f.onload = function() {
window[o] = JSON.parse(f.result);
refresh();
};
f.readAsText(file);
}
function loadImages(input) {
images = input.files;
index = 0;
show(0);
}
function loadTexts(input) {
readAsJSON(input.files[0], 'texts');
}
function loadTags(input) {
readAsJSON(input.files[0], 'tags');
}
function refresh() {
show(index);
}
function show(i) {
// Show image with given index + tags.
$('index').value = '';
$('name' ).value = '';
$('tags' ).value = '';
$('text' ).innerHTML = '';
$('image').src = '#';
let img = images[i];
if (img) {
$('index').value = i;
$('name' ).value = img.name;
$('tags' ).value = (tags[img.name] || []).join(', ');
$('text' ).innerHTML = (texts[ img.name] || '');
f = new FileReader();
f.onload = function() {
try {
$('image').src = f.result;
} catch(e) {
}
};
f.readAsDataURL(img);
}
}
function customize(k, v) {
// Assign tag v to control k (T/L/R/B).
controls[k] = $(k).innerHTML = v;
}
function bwd() {
// Show prev image (if any).
index = Math.max(index-1, -1);
show(index);
}
function fwd() {
// Show next image (if any).
index = Math.min(index+1, images.length);
show(index);
}
function goto(i) {
// Show image with index i.
index = Math.max(parseInt(i) || 0, 0);
index = Math.min(index, images.length-1);
show(index);
}
function tag(v) {
// 1) Add tag v to current image.
// 2) Show next image.
let img = images[index];
if (img && v) {
let k = img.name;
if (tags[k] == undefined) {
tags[k] = [];
}
if (tags[k].includes(v) == false) {
tags[k].push(v);
}
}
fwd();
$('save').classList.add('hot'); // (unsaved changes)
}
function edit(s) {
// Replace tags on current image,
// from comma-separated string.
let img = images[index];
if (img) {
let k = img.name;
let a = s.split(',');
for (let i=0; i < a.length; i++) {
a[i] = a[i].trim();
}
tags[k] = a;
}
$('save').classList.add('hot'); // (unsaved changes)
}
function save(a) {
// Generate JSON-file from tags at <a>.
let f;
f = JSON.stringify(tags);
f = new File([f], {type: 'text/plain'});
f = URL.createObjectURL(f);
a.download = 'tags.json';
a.href = f;
$('save').classList.remove('hot');
}
window.onload = function() {
// Controls:
// 1) Backspace & tab show previous/next image.
// 2) Up, down, left, right add tasg to image.
// 3) As long as no field has the focus.
document.addEventListener('keydown', function(e) {
if (['a', 'input', 'textarea'].includes(e.target.tagName.toLowerCase())) {
return;
} else if (e.keyCode == '8' ) { // BACKSPACE
bwd();
} else if (e.keyCode == '9' ) { // TAB
fwd();
} else if (e.keyCode == '38') { // T
tag($('T').innerHTML);
} else if (e.keyCode == '37') { // L
tag($('L').innerHTML);
} else if (e.keyCode == '39') { // R
tag($('R').innerHTML);
} else if (e.keyCode == '40') { // B
tag($('B').innerHTML);
} else {
return;
}
e.preventDefault();
});
// Autosave every 10 mins
setInterval(function() {
if ($('auto').checked) {
save($('save'));
$('save').click();
}
}, 1000 * 60 * 10);
}
</script>
</head>
<body>
<div class="var">
<label>images</label>
<input type="file" onchange="loadImages(this);" multiple />
</div>
<div class="var">
<label>texts</label>
<input type="file" onchange="loadTexts(this);" />
</div>
<div class="var">
<label>tags</label>
<input type="file" onchange="loadTags(this);" />
</div>
<div class="var">
<label>▲</label>
<input type="text" onchange="customize('T', this.value);" value="" />
</div>
<div class="var">
<label>◀</label>
<input type="text" onchange="customize('L', this.value);" value="bad" />
</div>
<div class="var">
<label>▶</label>
<input type="text" onchange="customize('R', this.value);" value="good" />
</div>
<div class="var">
<label>▼</label>
<input type="text" onchange="customize('B', this.value);" value="" />
</div>
<div class="var">
<label>index</label>
<input type="number" id="index" onchange="goto(this.value);" />
<a href="#" onclick="bwd(); return false;">«</a>
<a href="#" onclick="fwd(); return false;">»</a>
</div>
<div class="var">
<label>name</label>
<input type="text" id="name" disabled />
</div>
<br />
<div class="var">
<label></label>
<textarea id="tags" onchange="edit(this.value);"></textarea>
</div>
<div class="var">
<label></label>
<a class="button" id="save" href="" onclick="save(this);">Save</a>
<input type="checkbox" id="auto" /> auto
</div>
<div class="view">
<div>
<img id="image" src="" /><br />
<a id="L" href="#" onclick="tag(this.innerHTML); return false;">bad</a>
<a id="T" href="#" onclick="tag(this.innerHTML); return false;"></a>
<a id="R" href="#" onclick="tag(this.innerHTML); return false;">good</a>
<a id="B" href="#" onclick="tag(this.innerHTML); return false;"></a>
</div>
</div>
<p id="text"></p>
</body>
</html>