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<!DOCTYPE html>
<?php
$GRID_SIZE = 64;
$grid = json_decode(file_get_contents('array.json'), true);
if (empty($grid)) {
for($x = 0; $x < $GRID_SIZE; ++$x) {
$grid[$x] = array();
for($y = 0; $y < $GRID_SIZE; ++$y) {
$grid[$x][$y] = "#ffffff";
}
}
}
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$pos = explode(",", $_POST["cell"]);
if ($pos[0] >= 0 && $pos[1] >= 0 && $pos[0] < $GRID_SIZE && $pos[1] < $GRID_SIZE) {
$grid[$pos[0]][$pos[1]] = $_POST["color"];
file_put_contents('array.json', json_encode($grid));
}
}
?>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>cellgrid</title>
<style>
@font-face {
font-family: pixel;
src: url("font.woff")
}
body {
background: #282a2e;
color: #c5c8c6;
font-family: pixel, Courier New, Verdana, Arial;
font-size: 1em;
text-align: center;
}
.grid {
overflow: auto;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
#selector {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
height: 0%;
opacity: 0;
visibility: hidden;
float: right;
transition: height 0.5s;
overflow: hidden;
white-space: nowrap;
padding: 1%;
background: #373b41;
}
form:valid > #selector {
height: 3em;
visibility: visible;
opacity: 1;
}
input[type="color"] {
width: 20px;
height: 20px;
}
input[type='radio'] {
opacity: 0;
margin: 0;
}
input[type='radio']:checked {
opacity: 1;
height: 100%;
width: 100%;
}
.cell {
position: relative;
width: 10px;
height: 10px;
}
table {
border: 0.1em solid black;
font-size: 1px;
width: 640px;
height: 640px;
}
</style>
</head>
<body>
<form class="main" action="." method="post">
<div class="grid">
<table border="0" cellspacing="0" cellpadding="0">
<?php
for($x = 0; $x < $GRID_SIZE; ++$x) {
echo("<tr>");
for($y = 0; $y < $GRID_SIZE; ++$y) {
$id = "$x,$y";
$color = $grid[$x][$y];
echo "<td style='background-color:$color;'>";
echo "<label for='cell$id'>";
echo "<input type='radio' name='cell' id='cell$id' value='$id' required>";
echo "</label>";
echo "</td>";
}
echo("</tr>");
}
?>
</table>
</div>
<div id="selector">
<span>Select Color:</span>
<br>
<input type="color" id="color" name="color">
<input type="submit" value="Submit">
</div>
</form>
</body>
</html>
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