SVG CSS3 Menu / Burger Button
HTML
<div id="hamburger" class="hamburglar is-open">
<div class="burger-icon">
<div class="burger-container">
<span class="burger-bun-top"></span>
<span class="burger-filling"></span>
<span class="burger-bun-bot"></span>
</div>
</div>
<!-- svg ring containter -->
<div class="burger-ring">
<svg class="svg-ring">
<path class="path" fill="none" stroke="#fff" stroke-miterlimit="10" stroke-width="4" d="M 34 2 C 16.3 2 2 16.3 2 34 s 14.3 32 32 32 s 32 -14.3 32 -32 S 51.7 2 34 2" />
</svg>
</div>
<!-- the masked path that animates the fill to the ring -->
<svg width="0" height="0">
<mask id="mask">
<path xmlns="http://www.w3.org/2000/svg" fill="none" stroke="#ff0000" stroke-miterlimit="10" stroke-width="4" d="M 34 2 c 11.6 0 21.8 6.2 27.4 15.5 c 2.9 4.8 5 16.5 -9.4 16.5 h -4" />
</mask>
</svg>
<div class="path-burger">
<div class="animate-path">
<div class="path-rotation"></div>
</div>
</div>
</div>
<h4>Click the Icon</h4>
SCSS
// vars
$color: #fff; // icon color
$purple: #b348bf; // background color
$animation: 0.6s; // animation speed
$scale: 1; // icon scale 68/68 default
*, *:before, *:after {
box-sizing: border-box;
}
// spacing + background-color
body {
background: $purple;
padding: 40px;
}
h4 {
font-family: Amatic SC;
color: $color;
font-size: 28px;
text-align: center;
margin: 40px 0 0;
}
.hamburglar {
transform: scale($scale);
margin: 40px auto;
position: relative;
display: block;
width: 68px;
height: 68px;
background: $purple;
-webkit-touch-callout: none;
user-select: none;
}
// transition mask
.path-burger {
position: absolute;
top: 0;
left: 0;
height: 68px;
width: 68px;
// two masks because... browser support.
mask: url(#mask);
-webkit-mask-box-image: url(https://raygun.io/upload/mask.svg);
}
.animate-path {
position: absolute;
top: 0;
left: 0;
width: 68px;
height: 68px;
}
// what this does is create a small square that I then rotate behind an svg mask, giving the apparence of the line animating
.path-rotation {
height: 34px;
width: 34px;
margin: 34px 34px 0 0;
transform: rotate(0deg);
transform-origin: 100% 0;
&:before {
content: '';
display: block;
width: 30px;
height: 34px;
margin: 0 4px 0 0;
background: $color;
}
}
// box rotation animation
@keyframes rotate-out {
0% {
transform: rotate(0deg);
}
40% {
transform: rotate(180deg);
}
100% {
transform: rotate(360deg);
}
}
@keyframes rotate-in {
0% {
transform: rotate(360deg);
}
40% {
transform: rotate(180deg);
}
100% {
transform: rotate(0deg);
}
}
// offset moves
// dasharray is the dash size
// need to be able to control dash space size.
.hamburglar.is-open {
.path {
animation: dash-in $animation linear normal;
animation-fill-mode:forwards;
}
.animate-path {
animation: rotate-in $animation linear normal;
animation-fill-mode:forwards;
}
}
.hamburglar.is-closed {
.path {
animation: dash-out $animation linear normal;
animation-fill-mode:forwards;
}
.animate-path {
animation: rotate-out $animation linear normal;
animation-fill-mode:forwards;
}
}
.path {
stroke-dasharray: 240;
stroke-dashoffset: 240;
stroke-linejoin: round;
}
@keyframes dash-in {
0% {
stroke-dashoffset: 240;
}
40% {
stroke-dashoffset: 240;
}
100% {
stroke-dashoffset: 0;
}
}
@keyframes dash-out {
0% {
stroke-dashoffset: 0;
}
40% {
stroke-dashoffset: 240;
}
100% {
stroke-dashoffset: 240;
}
}
// All good burgers need filling!
.burger-icon {
position: absolute;
padding: 20px 16px;
height: 68px;
width: 68px;
}
.burger-container {
position: relative;
height: 28px;
width: 36px;
}
.burger-bun-top,
.burger-bun-bot,
.burger-filling {
position: absolute;
display: block;
height: 4px;
width: 36px;
border-radius: 2px;
background: $color;
}
.burger-bun-top {
top: 0;
transform-origin: 34px 2px;
}
.burger-bun-bot {
bottom: 0;
transform-origin: 34px 2px;
}
//.burger-filling {
// @include transition(all,($animation/2.5),ease-in-//out);
//}
// relative parent is the button
.burger-filling {
top: 12px;
}
// burger ring container
.burger-ring {
position: absolute;
top: 0;
left: 0;
width: 68px;
height: 68px;
}
.svg-ring {
width: 68px;
height: 68px;
}
// bun animations
.hamburglar.is-open {
.burger-bun-top {
animation: bun-top-out $animation linear normal;
animation-fill-mode:forwards;
}
.burger-bun-bot {
animation: bun-bot-out $animation linear normal;
animation-fill-mode:forwards;
}
}
.hamburglar.is-closed {
.burger-bun-top {
animation: bun-top-in $animation linear normal;
animation-fill-mode:forwards;
}
.burger-bun-bot {
animation: bun-bot-in $animation linear normal;
animation-fill-mode:forwards;
}
}
@keyframes bun-top-out {
0% {
left: 0;
top: 0;
transform: rotate(0deg);
}
20% {
left: 0;
top: 0;
transform: rotate(15deg);
}
80% {
left: -5px;
top: 0;
transform: rotate(-60deg);
}
100% {
left: -5px;
top: 1px;
transform: rotate(-45deg);
}
}
@keyframes bun-bot-out {
0% {
left: 0;
transform: rotate(0deg);
}
20% {
left: 0;
transform: rotate(-15deg);
}
80% {
left: -5px;
transform: rotate(60deg);
}
100% {
left: -5px;
transform: rotate(45deg);
}
}
@keyframes bun-top-in {
0% {
left: -5px;
bot: 0;
transform: rotate(-45deg);
}
20% {
left: -5px;
bot: 0;
transform: rotate(-60deg);
}
80% {
left: 0;
bot: 0;
transform: rotate(15deg);
}
100% {
left: 0;
bot: 1px;
transform: rotate(0deg);
}
}
@keyframes bun-bot-in {
0% {
left: -5px;
transform: rotate(45deg);
}
20% {
left: -5px;
bot: 0;
transform: rotate(60deg);
}
80% {
left: 0;
bot: 0;
transform: rotate(-15deg);
}
100% {
left: 0;
transform: rotate(0deg);
}
}
// burger filling
.hamburglar.is-open {
.burger-filling {
animation: burger-fill-out $animation linear normal;
animation-fill-mode:forwards;
}
}
.hamburglar.is-closed {
.burger-filling {
animation: burger-fill-in $animation linear normal;
animation-fill-mode:forwards;
}
}
@keyframes burger-fill-in {
0% {
width: 0;
left: 36px;
}
40% {
width: 0;
left: 40px;
}
80% {
width: 36px;
left: -6px;
}
100% {
width: 36px;
left: 0px;
}
}
@keyframes burger-fill-out {
0% {
width: 36px;
left: 0px;
}
20% {
width: 42px;
left: -6px;
}
40% {
width: 0;
left: 40px;
}
100% {
width: 0;
left: 36px;
}
}
JAVASCRIPT
$('document').ready(function () {
var trigger = $('#hamburger'),
isClosed = true;
trigger.click(function () {
burgerTime();
});
function burgerTime() {
if (isClosed == true) {
trigger.removeClass('is-open');
trigger.addClass('is-closed');
isClosed = false;
} else {
trigger.removeClass('is-closed');
trigger.addClass('is-open');
isClosed = true;
}
}
});
