js实现一个canvas四色圆点转动背景效果代码
代码语言:html
所属分类:背景
代码描述:js实现一个canvas四色圆点转动背景效果代码
下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开
<html lang="en">
<head>
<meta charset="UTF-8">
<style>
:root {
--black: #101820;
}
body {
align-content: start;
box-sizing: border-box;
display: grid;
font-family: sans-serif;
font-weight: bold;
min-height: 100vh;
grid-template-columns: minmax(280px, 485px) 1fr;
letter-spacing: 0.03em;
line-height: 1;
padding: 16px;
text-align: center;
}
body *:focus:not(:focus-visible) {
outline: none;
}
canvas#webgl {
left: 0;
position: fixed;
top: 0;
z-index: 0;
}
button {
appearance: none;
background: white;
border: none;
border-radius: 0;
color: var(--black);
cursor: pointer;
font-family: inherit;
font-weight: inherit;
font-size: inherit;
letter-spacing: inherit;
line-height: inherit;
}
.toggle {
background: white;
box-shadow: 0 0 32px rgba(17, 25, 33, 0.5);
position: relative;
z-index: 1;
}
.toggle[aria-expanded=true] .toggle__content {
max-height: 800px;
opacity: 1;
transition-delay: 0.2s, 0s, 0s;
transition-duration: 0.4s, 0.4s, 0s;
visibility: visible;
}
.toggle__button {
--space: 8px;
align-items: center;
display: flex;
font-size: 1.2rem;
justify-content: center;
padding: calc(var(--space) *3);
position: relative;
width: 100%;
}
.toggle__icon {
position: absolute;
top: 50%;
right: calc(var(--space) *2);
transform: translateY(-50%);
}
.toggle__content {
max-height: 0;
opacity: 0;
transition-delay: 0s, 0.2s, 0.6s;
transition-duration: 0.2s, 0.4s, 0s;
transition-property: opacity, max-height, visibility;
visibility: hidden;
}
.toggle__content::before {
background-color: var(--black);
content: "";
display: block;
height: 1px;
margin: auto;
width: 94px;
}
.color-picker {
display: grid;
padding: 20px 20px 16px;
position: relative;
gap: 16px;
z-index: 1;
}
.color-picker__canvas-wrap {
justify-self: center;
position: relative;
touch-action: none;
width: 73%;
}
.color-picker__canvas {
cursor: grab;
display: block;
width: 100%;
}
.color-picker__canvas:active {
cursor: grabbing;
}
.color-picker__selected {
border: 1px solid #101820;
color: #6F747B;
padding: 20px;
}
.color-picker__inputs {
margin: 0;
padding: 0;
line-height: 1;
list-style-type: none;
}
.color-picker__item {
display: flex;
margin: 0;
}
.color-picker__input-wrap {
align-items: center;
background-color: var(--fill);
display: flex;
flex: 0 1 85%;
height: 32px;
position: relative;
}
.color-picker__input-wrap::before {
background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0) 50%, rgba(255, 255, 255, 0) 51%, rgba(255, 255, 255, 0.9) 100%);
content: "";
height: 100%;
left: 0;
position: absolute;
top: 0;
width: 100%;
}
.color-picker__input {
--size: 14px;
--scale: 1;
--active-scale: 1.3;
appearance: none;
background: rgba(255, 255, 255, 0);
flex: 1;
height: 2px;
margin: 0 16px;
outline: none;
padding: 0;
position: relative;
}
.color-picker__input::-webkit-slider-thumb {
appearance: none;
background: var(--modified-fill);
height: var(--size);
border-radius: 50%;
border: 2px solid white;
box-shadow: 0 0 0 2px black;
cursor: pointer;
transform: scale(var(--scale));
transition: transform 0.2s;
width: var(--size);
}
.color-picker__input::-webkit-slider-thumb:hover {
--scale: var(--active-scale);
}
.color-picker__input:hover, .color-picker__input:active, .color-picker__input:focus {
background: white;
}
.color-picker__input:focus::-webkit-slider-thumb {
--scale: 1.3;
}
.color-picker__input:focus::-moz-range-thumb {
--scale: 1.3;
}
.color-picker__input::-moz-range-thumb {
appearance: none;
background: var(--modified-fill);
height: var(--size);
border-radius: 50%;
border: 2px solid white;
box-shadow: 0 0 0 2px black;
cursor: pointer;
transform: scale(var(--scale));
transition: transform 0.2s;
width: var(--size);
}
.color-picker__input::-moz-range-thumb:hover {
--scale: var(--active-scale);
}
.color-picker__input:active::-moz-range-thumb {
--scale: 1.3;
}
.color-picker__color-label {
background-color: var(--modified-fill);
flex: 1 1 auto;
margin-left: 1px;
}
.color-picker__button {
appearance: none;
background-color: var(--black);
color: white;
padding: 24px 64px;
justify-self: center;
text-transform: uppercase;
}
</style>
</head>
<body>
<div class="toggle" aria-expanded="true">
<button class="toggle__button"><span class="toggle__text">Tetradic Color Picker</span>
<svg class="toggle__icon" width="48" height="48" viewBox="0 0 48 48">
<g fill="none" fill-rule="evenodd">
<circle cx="24" cy="24" r="24" fill="#E7E8E8"></circle>
<g stroke="#101820" stroke-width="3" transform="translate(14 14)">
<rect width="17" height="17" x="1.5" y="1.5"></rect>
<rect width="17" height="5" x="1.5" y="1.5"></rect>
</g>
</g>
</svg>
</button>
<div class="toggle__content">
<div class="color-picker">
<div class="color-picker__canvas-wrap">
<canvas class="color-picker__canvas" width="325" height="325"></canvas>
</div>
<ul class="color-picker__inputs">
<li class="color-picker__item" style="--fill:#27d8a6; --modified-fill:#27d8a6;">
<div class="color-picker__input-wrap">
<input class="color-picker__input" type="range" min="0" max="100" step="1">
</div>
<span class="color-picker__color-label"></span>
</li>
<li class="color-picker__item" style="--fill:#b1d827; --modified-fill:#b1d827;">
<div class="color-picker__input-wrap">
<input class="color-picker__input" type="range" min="0" max="100" step="1">
</div>
<span class="color-picker__color-label"></span>
</li>
<li class="color-picker__item" style="--fill:#d82759; --modified-fill:#d82759;">
<div class="color-picker__input-wrap">
<input class="color-picker__input" type="range" min="0" max="100" step="1">
</div>
<span class="color-picker__color-label"></span>
</li>
<li class="color-picker__item" style="--fill:#4e27d8; --modified-fill:#4e27d8;">
<div class="color-picker__input-wrap">
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