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demo.html
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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>miniprogram-pallete</title>
<style>
.container {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100%;
box-sizing: border-box;
height: 100%;
background: linear-gradient(0deg, #b7eb8f, 20%, #b5f5ec);
}
.feature-info {
height: 20px;
line-height: 20px;
padding: 14px;
font-size: 14px;
color: #fff;
width: 100%;
text-align: center;
}
.operator-container {
display: flex;
flex-direction: row;
justify-content: center;
}
.input-file-container {
position: relative;
width: 80px;
height: 24px;
line-height: 24px;
border-radius: 4px;
background-color: #95de64;
color: #fff;
font-size: 14px;
box-shadow: 1px 1px 5px #888;
text-align: center;
}
.input-file-button {
position: absolute;
left: 0px;
width: 80px;
opacity: 0;
}
.item_file img {
width: 100%;
height: 100%;
object-fit: cover;
}
.item_colors {
color: #fff;
font-size: 14px;
line-height: 20px;
margin-top: 26px;
margin-left: 26px;
}
.item_file {
padding: 20px;
width: 200px;
margin-left: 26px;
}
.button {
width: 80px;
height: 24px;
line-height: 24px;
border-radius: 4px;
background-color: #95de64;
color: #fff;
font-size: 14px;
box-shadow: 1px 1px 5px #888;
text-align: center;
margin-top: 20px;
}
#image-container {
position: relative;
top: -24px;
left: 120px;
width: 200px;
height: 200px;
border: 4px dashed #FFF;
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
}
</style>
</head>
<body>
<div class="container">
<div class="feature-info">支持图片主色调获取、暖色调、美颜等</div>
<div class="operator-container">
<div>
<div class="input-file-container">
<span>选择图片</span>
<input type="file" id="file" class="input-file-button" accept="image/gif,image/jpeg,image/jpg,image/png,image/svg" />
</div>
<div id="image-container">
<svg viewBox="64 64 896 896" focusable="false" data-icon="picture" width="3em" height="3em" fill="#95de64" aria-hidden="true"><path d="M928 160H96c-17.7 0-32 14.3-32 32v640c0 17.7 14.3 32 32 32h832c17.7 0 32-14.3 32-32V192c0-17.7-14.3-32-32-32zm-40 632H136v-39.9l138.5-164.3 150.1 178L658.1 489 888 761.6V792zm0-129.8L664.2 396.8c-3.2-3.8-9-3.8-12.2 0L424.6 666.4l-144-170.7c-3.2-3.8-9-3.8-12.2 0L136 652.7V232h752v430.2z" fill="#95de64"></path><path d="M424.6 765.8l-150.1-178L136 752.1V792h752v-30.4L658.1 489z" fill="#e6f7ff"></path><path d="M136 652.7l132.4-157c3.2-3.8 9-3.8 12.2 0l144 170.7L652 396.8c3.2-3.8 9-3.8 12.2 0L888 662.2V232H136v420.7zM304 280a88 88 0 110 176 88 88 0 010-176z" fill="#e6f7ff"></path><path d="M276 368a28 28 0 1056 0 28 28 0 10-56 0z" fill="#e6f7ff"></path><path d="M304 456a88 88 0 100-176 88 88 0 000 176zm0-116c15.5 0 28 12.5 28 28s-12.5 28-28 28-28-12.5-28-28 12.5-28 28-28z" fill="#95de64"></path></svg>
</div>
<div id="button-list" style="display: none;">
<div class="button" id="grey-image">灰度化图片</div>
<div class="button" id="warm-image">暖色调</div>
<div class="button" id="gaussian-blur-image">高斯模糊</div>
</div>
</div>
<div class="imgfile">
<div class="item item_file" id="demo"></div>
<div class="item_colors" id="colors"></div>
</div>
</div>
<div class="demos"></div>
</div>
</body>
<script src="./image-main-color.js"></script>
<script type="module">
import { traverse, gaussianBlur } from './lib/utils.js';
import { transformColor, brightness, saturate, channel, grayscale, contrast } from './lib/color-matrix.js';
let imageDataDefaultObj = [];
document.getElementById("file").addEventListener("change", (e) => {
const { files } = e.target;
let file = files ? files[0] : null;
if (!file) return;
getLocationUrl(file, (src) => {
const image = document.getElementById("image");
if (!image) {
document.getElementById("demo").innerHTML = `<img src="${src}" id="image"/>`;
} else {
image.src = src;
}
initImage(src, (imageData) => {
imageDataDefaultObj = imageData;
const res = getMainColor(imageData.data);
if (imageData.data && imageData.data.length) {
document.getElementById("button-list").style.display = "block";
document.getElementById("image-container").style.display = "none";
}
document.getElementById('demo').style.background = res.hex;
document.getElementById('colors').innerHTML = '<div>图片主色调为：</div><div>HEX：' + res.hex + '</div>' +
'<div>HEXA：' + res.hexa + '</div>' +
'<div>RGB：' + res.rgb + '</div>' +
'<div>RGBA：' + res.rgba + '</div>';
});
})
})
document.getElementById("grey-image").addEventListener("click", () => {
const buttonForGaussian = document.getElementById("gaussian-blur-image");
const buttonForWarm = document.getElementById("warm-image");
const buttonForGrey = document.getElementById("grey-image");
buttonForGaussian.style.backgroundColor = "#95de64";
buttonForWarm.style.backgroundColor = "#95de64";
buttonForGrey.style.backgroundColor = "#888888";
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
// const height = document.getElementById("image").clientHeight; // 图片宽
// const width = document.getElementById("image").clientWidth; // 图片高
const x = document.getElementById("image").clientLeft; // 居左坐标
const y = document.getElementById("image").clientTop; // 居右坐标
const tempImageDataObj = context.createImageData(imageDataDefaultObj.width, imageDataDefaultObj.height);
for (let i = 0; i < imageDataDefaultObj.data.length; i++) {
tempImageDataObj.data[i] = imageDataDefaultObj.data[i];
tempImageDataObj.data[i + 1] = imageDataDefaultObj.data[i + 1];
tempImageDataObj.data[i + 2] = imageDataDefaultObj.data[i + 2];
tempImageDataObj.data[i + 3] = imageDataDefaultObj.data[i + 3];
}
greyTheImage(tempImageDataObj)
canvas.width = imageDataDefaultObj.width;
canvas.height = imageDataDefaultObj.height;
// imageDataDefaultObj.data = greyImageData;
context.putImageData(tempImageDataObj, x, y);
var data = canvas.toDataURL("image/png", 1);
var img = document.getElementById("image");
img.src = data;
})
document.getElementById("warm-image").addEventListener("click", () => {
const buttonForGaussian = document.getElementById("gaussian-blur-image");
const buttonForWarm = document.getElementById("warm-image");
const buttonForGrey = document.getElementById("grey-image");
buttonForGaussian.style.backgroundColor = "#95de64";
buttonForWarm.style.backgroundColor = "#888888";
buttonForGrey.style.backgroundColor = "#95de64";
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
// const height = document.getElementById("image").clientHeight; // 图片宽
// const width = document.getElementById("image").clientWidth; // 图片高
const x = document.getElementById("image").clientLeft; // 居左坐标
const y = document.getElementById("image").clientTop; // 居右坐标
// const tempImageData = new ImageData(imageDataDefaultObj);
const tempImageDataObj = context.createImageData(imageDataDefaultObj.width, imageDataDefaultObj.height);
for (let i = 0; i < imageDataDefaultObj.data.length; i++) {
tempImageDataObj.data[i] = imageDataDefaultObj.data[i];
tempImageDataObj.data[i + 1] = imageDataDefaultObj.data[i + 1];
tempImageDataObj.data[i + 2] = imageDataDefaultObj.data[i + 2];
tempImageDataObj.data[i + 3] = imageDataDefaultObj.data[i + 3];
}
traverse(tempImageDataObj, ({ r, g, b, a }) => {
return transformColor(
[r, g, b, a],
channel({ r: 1.2 }),
brightness(1.2),
saturate(1.2),
);
});
canvas.width = imageDataDefaultObj.width;
canvas.height = imageDataDefaultObj.height;
// imageDataDefaultObj.data = tempImageData;
context.putImageData(tempImageDataObj, x, y);
var data = canvas.toDataURL("image/png", 1);
var img = document.getElementById("image");
img.src = data;
})
document.getElementById("gaussian-blur-image").addEventListener("click", () => {
const buttonForGaussian = document.getElementById("gaussian-blur-image");
const buttonForWarm = document.getElementById("warm-image");
const buttonForGrey = document.getElementById("grey-image");
buttonForGaussian.style.backgroundColor = "#888888";
buttonForWarm.style.backgroundColor = "#95de64";
buttonForGrey.style.backgroundColor = "#95de64";
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
// const height = document.getElementById("image").clientHeight; // 图片宽
// const width = document.getElementById("image").clientWidth; // 图片高
const x = document.getElementById("image").clientLeft; // 居左坐标
const y = document.getElementById("image").clientTop; // 居右坐标
// const tempImageData = new ImageData(imageDataDefaultObj);
const tempImageDataObj = context.createImageData(imageDataDefaultObj.width, imageDataDefaultObj.height);
for (let i = 0; i < imageDataDefaultObj.data.length; i++) {
tempImageDataObj.data[i] = imageDataDefaultObj.data[i];
tempImageDataObj.data[i + 1] = imageDataDefaultObj.data[i + 1];
tempImageDataObj.data[i + 2] = imageDataDefaultObj.data[i + 2];
tempImageDataObj.data[i + 3] = imageDataDefaultObj.data[i + 3];
}
gaussianBlur(tempImageDataObj.data, tempImageDataObj.width, tempImageDataObj.height, 4);
traverse(tempImageDataObj, ({r, g, b, a}) => {
return transformColor([r, g, b, a], grayscale(0.5), saturate(1.2), contrast(1.1), brightness(1.2));
});
canvas.width = imageDataDefaultObj.width;
canvas.height = imageDataDefaultObj.height;
// imageDataDefaultObj.data = tempImageData;
context.putImageData(tempImageDataObj, x, y);
var data = canvas.toDataURL("image/png", 1);
var img = document.getElementById("image");
img.src = data;
})
function getLocationUrl(file, callback) {
const reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = (e) => {
const { result } = e.target;
callback(result);
}
}
</script>
</html>