Add background colour picker to pallette

This commit is contained in:
Talia 2022-09-07 15:44:23 +02:00
parent 55e87ce242
commit c35535e60f

View file

@ -1,5 +1,10 @@
<h1>A colour palette in plain HTML</h1>
<label>
<span>Background Colour:</span>
<input value="#f2f2f3" type="color" id="background-color"></input>
</label>
<section class="box">
A template colour palette written as a self-contained HTML file.
New palettes can be created easily by copying the file and changing a few CSS variables.
@ -92,6 +97,9 @@
color: hsl(220deg, 8%, 20%);
font-family: "Open Sans", sans-serif;
}
body.dark {
color: hsl(220deg, 8%, 80%);
}
* {
box-sizing: border-box;
@ -157,6 +165,9 @@
div.colors button:hover::before {
box-shadow: none;
}
body.dark div.colors button:hover {
box-shadow: .0em .0em .6em hsla(var(--hue), calc(var(--saturation) + 30%), 80%, 60%);
}
/* === Popup notification shenanigans === */
@ -194,6 +205,11 @@
margin: 2em 0em;
}
body.dark .box {
background: hsla(200deg, 5%, 6%, 1);
box-shadow: .0em .1em .2em inset #0006;
}
.hint, .info { --color: hsla(calc( 280deg - calc(360deg / 6)), 50%, 50%, 1) }
.box::after {
@ -219,7 +235,7 @@
[center] { text-align: center; }
</style>
<script>
<script type="module">
const showMessage = function(message, color, x, y) {
let box = document.createElement('div');
box.innerHTML = message;
@ -237,16 +253,43 @@
box.addEventListener("animationend", ({box: target}) => box.parentElement.removeChild(box))
}
window.addEventListener("load", function() {
document.querySelectorAll('div.colors button').forEach(button => {
button.addEventListener('click', event => {
const prop = name => getComputedStyle(button).getPropertyValue(name).replace(/^ *| *$/g, "")
const hsla = `hsla(${prop("--hue")}, ${prop("--saturation")}, ${prop("--lightness")}, 1)`
navigator.clipboard.writeText(hsla).then(() => {
const box = button.getBoundingClientRect()
showMessage(`Copied to Clipboard:<br>${hsla}`, hsla, box.x+box.width/2, box.y+box.height/2);
});
document.querySelectorAll('div.colors button').forEach(button => {
button.addEventListener('click', event => {
const prop = name => getComputedStyle(button)
.getPropertyValue(name)
.replace(/^ *| *$/g, "")
const colour = `hsl(${prop("--hue")}, ${prop("--saturation")}, ${prop("--lightness")})`
navigator.clipboard.writeText(colour).then(() => {
const box = button.getBoundingClientRect()
showMessage(`Copied to Clipboard:<br>${colour}`, colour, box.x+box.width/2, box.y+box.height/2);
});
});
});
const register = (type, name, initial=undefined) => CSS.registerProperty({
name: `--${name}`,
syntax: `<${type}>`,
inherits: true,
initialValue: initial,
})
register("angle", "hue", "0deg")
register("percentage", "saturation", "100%")
register("percentage", "lightness", "50%")
const backgroundColourButton = document.getElementById("background-color")
backgroundColourButton.addEventListener("input", event => {
const rgb = backgroundColourButton.value
document.body.style.background = rgb
const channels = rgb
.match(/[0-9a-f][0-9a-f]/g)
.map(hex => parseInt(hex, 16))
.map(num => num / 255)
const luminosity = channels.reduce((a,b)=>a+b) / 3
if (luminosity < 0.4) {
document.body.classList.add("dark")
} else {
document.body.classList.remove("dark")
}
})
</script>