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@skhavari
Created April 28, 2020 04:18
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Fax Image Maker</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/css/bulma.min.css" />
<style>
html,
body {
width: 100vw;
height: 100vh;
margin: 0;
padding: 0;
}
body {
display: flex;
align-items: center;
justify-content: center;
background-color: rgba(128, 128, 128, 0.1);
}
#grid {
display: grid;
gap: 5px;
}
#grid input[type='text'] {
align-self: center;
margin-left: 30px;
}
.cell {
border: 1px solid gainsboro;
background-color: white;
border: none;
border-radius: 5px;
width: 30px;
height: 30px;
transition: background-color 150ms linear;
}
</style>
</head>
<body>
<div class="modal is-active">
<div class="modal-content">
<div class="field">
<label for="widthInput" class="label">Width</label>
<div class="control">
<input autofocus class="input" type="number" id="widthInput" value="5" />
</div>
</div>
<div class="field">
<label for="heightInput" class="label">Height</label>
<div class="control"><input class="input" type="number" id="heightInput" value="5" /></div>
</div>
<div class="control">
<button class="button is-link" id="submit">Submit</button>
</div>
</div>
</div>
<div id="grid"></div>
</body>
<script>
const colors = ['white', 'black'];
const nullEl = document.createElement('null');
let gridEl = document.getElementById('grid');
let modalEl = document.body.querySelector('div.modal');
let submitEl = document.getElementById('submit');
let widthInputEl = document.getElementById('widthInput');
let heightInputEl = document.getElementById('heightInput');
const updateRow = (text, elements) => {
let vals = text
.split(',')
.map((x) => x.trim())
.filter((x) => x.length > 0)
.map((x) => Math.floor(Number(x)))
.filter((x) => isFinite(x));
vals.forEach((runLength, idx) => {
for (var j = 0; j < runLength; j++) {
let el = elements.shift() || nullEl;
el.style.backgroundColor = colors[idx % 2];
}
});
elements.forEach((el) => (el.style.background = 'white'));
};
const makeGrid = (width, height) => {
const makeCellEl = () => {
let cell = document.createElement('div');
cell.classList.add('cell');
return cell;
};
const makeInputEl = (rowElements) => {
let input = document.createElement('input');
input.type = 'text';
input.classList.add('input', 'is-normal', 'is-small');
input.addEventListener('input', () => updateRow(input.value, [...rowElements]));
return input;
};
let frag = document.createDocumentFragment();
for (var h = 0; h < height; h++) {
let rowElements = [];
for (var w = 0; w < width; w++) {
let cell = makeCellEl();
rowElements.push(cell);
frag.appendChild(cell);
if (w === width - 1) {
frag.appendChild(makeInputEl(rowElements));
}
}
}
gridEl.innerHTML = '';
gridEl.style.gridTemplateRows = `repeat(${height}, auto)`;
gridEl.style.gridTemplateColumns = `repeat(${width}, auto) auto`;
gridEl.appendChild(frag);
};
submitEl.addEventListener('click', () => {
modalEl.classList.remove('is-active');
makeGrid(widthInputEl.valueAsNumber, heightInputEl.valueAsNumber);
});
</script>
</html>
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