图片上传组件更新

master
yutent 2023-12-14 18:50:55 +08:00
parent 97e2089a3a
commit 84c852e983
3 changed files with 608 additions and 2 deletions

607
src/form/image-uploader.js Normal file
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@ -0,0 +1,607 @@
/**
* {上传组件}
* @author yutent<yutent.io@gmail.com>
* @date 2023/04/28 16:14:10
*/
import { css, html, Component, offset, bind, unbind, styleMap } from 'wkit'
import { parseSize } from '../base/fs.js'
import '../base/icon.js'
const EV_OPTION = { once: true }
const DOC = document
const ROOT = document.documentElement
function uuid() {
return Math.random().toString(16).slice(2)
}
class Uploader extends Component {
static props = {
value: [],
accept: '*/*',
maxSize: 0,
disabled: false
}
static styles = [
css`
:host {
display: flex;
width: 100%;
font-size: 14px;
}
img,
a {
-webkit-user-drag: none;
}
.container {
position: relative;
display: flex;
width: 100%;
padding: 6px 0;
gap: 12px;
-webkit-user-select: none;
user-select: none;
--size: var(--wc-uploader-size, 96px);
--border-color: var(--wc-uploader-border-color, var(--color-grey-2));
--wc-icon-size: 14px;
}
.error {
display: block;
line-height: 1.5;
font-size: 12px;
font-style: normal;
color: var(--color-red-1);
background: none;
}
.limited {
display: none;
}
.upload-button {
position: relative;
display: inline-flex;
flex-direction: column;
justify-content: center;
align-items: center;
width: var(--size);
height: var(--size);
gap: 4px;
border: 1px solid var(--color-grey-2);
border-radius: 6px;
font-size: 12px;
cursor: pointer;
transition: background 0.1s linear, border-color 0.1s linear,
color 0.1s linear;
--wc-icon-size: 22px;
&:hover {
border-color: var(--color-grey-1);
}
&:active {
background: var(--color-plain-1);
}
&.in {
border: 1px dashed var(--color-orange-1);
background: var(--color-drag-background);
}
}
.hidden-input {
position: absolute;
left: 0;
top: 0;
display: block;
width: 100%;
height: 100%;
opacity: 0;
cursor: inherit;
&::-webkit-file-upload-button {
display: none;
}
}
`,
css`
.file-list {
display: flex;
gap: 12px;
.item {
display: flex;
align-items: center;
justify-content: center;
width: var(--size);
height: var(--size);
padding: 0 8px;
line-height: 24px;
gap: 6px;
border: 1px solid var(--border-color);
border-radius: 6px;
background: none no-repeat center;
background-size: contain;
transition: background 0.15s linear;
--wc-icon-size: 20px;
&:hover {
background-color: var(--color-plain-1);
wc-icon {
opacity: 1;
}
}
wc-icon {
flex-shrink: 0;
padding: 3px;
border: 1px solid rgba(255, 255, 255, 0.25);
border-radius: 50%;
background: rgba(64, 64, 64, 0.75);
color: #fff;
opacity: 0;
cursor: pointer;
transition: opacity 0.15s linear;
&:hover {
border-color: rgba(255, 255, 255, 0.5);
}
}
}
}
`,
// disabled
css`
:host([disabled]) {
opacity: 0.6;
.upload-button {
background: var(--color-disabled-background);
cursor: not-allowed;
}
}
`,
// preview
css`
.preview {
position: fixed;
left: 0;
top: 0;
z-index: 99;
display: none;
align-items: center;
justify-content: center;
width: 100vw;
height: 100vh;
background: rgba(0, 0, 0, 0.3);
img {
display: block;
max-width: 90%;
max-height: 90%;
object-fit: contain;
box-shadow: 0 0 20px #000;
}
}
`,
//panel
css`
.edit-panel {
position: fixed;
left: 50%;
top: 50%;
z-index: 99;
align-items: center;
justify-content: center;
width: 800px;
height: 556px;
padding: 16px;
background: #fff;
box-shadow: 0 0 16px rgba(0, 0, 0, 0.3);
transform: translate(-50%, -50%);
-webkit-user-select: none;
user-select: none;
}
.workspace {
position: relative;
display: flex;
align-items: center;
justify-content: center;
width: 640px;
height: 480px;
background: linear-gradient(
45deg,
var(--color-grey-1) 25%,
transparent 25%,
transparent 75%,
var(--color-grey-1) 75%,
var(--color-grey-1)
),
linear-gradient(
45deg,
var(--color-grey-1) 25%,
transparent 25%,
transparent 75%,
var(--color-grey-1) 75%,
var(--color-grey-1)
);
background-size: 16px 16px;
background-position: 0 0, 8px 8px;
box-shadow: 0 0 0 1px var(--color-grey-2);
img {
max-width: 100%;
max-height: 100%;
}
}
.crop-area {
position: absolute;
cursor: grab;
&::before {
position: absolute;
left: -1px;
top: -1px;
width: calc(100% + 2px);
height: calc(100% + 2px);
border: 2px dashed var(--color-blue-1);
content: '';
}
&:active {
cursor: grabbing;
}
i {
position: absolute;
width: 8px;
height: 8px;
border-radius: 50%;
background: var(--color-blue-1);
cursor: move;
&:nth-child(1) {
left: -4px;
top: -4px;
}
&:nth-child(2) {
right: -4px;
top: -4px;
}
&:nth-child(3) {
left: -4px;
bottom: -4px;
}
&:nth-child(4) {
right: -4px;
bottom: -4px;
}
}
}
.statusbar {
position: absolute;
right: 16px;
top: 16px;
width: 112px;
.crop {
display: flex;
flex-direction: column;
gap: 4px;
span {
display: inline-flex;
align-items: center;
justify-content: center;
width: 100%;
height: 28px;
background: var(--color-plain-1);
cursor: pointer;
}
}
fieldset {
margin-top: 8px;
padding: 3px 8px;
border: 1px solid var(--color-plain-2);
}
legend {
font-size: 12px;
}
}
.toolbar {
display: flex;
gap: 6px;
margin-top: 16px;
span {
display: inline-flex;
align-items: center;
justify-content: center;
height: 28px;
padding: 0 8px;
font-size: 12px;
border: 1px solid var(--color-grey-1);
border-radius: 4px;
background: var(--color-plain-1);
cursor: pointer;
}
}
`
]
#files = []
#timer
#workspace = {
w: 640,
h: 480
}
// 原图信息
#origin = {
w: 670,
h: 429
}
#cropData = {
x: 0,
y: 0,
w: 300,
h: 300
}
#ratio = 0
#toast(msg) {
this.$refs.err.textContent = msg
clearTimeout(this.#timer)
this.#timer = setTimeout(() => {
this.$refs.err.textContent = ''
}, 5000)
}
#fileChange(ev) {
let files = [...ev.target.files]
ev.target.value = ''
this.#fetchUpload(files)
}
#fetchUpload(files) {
let { limit, maxSize } = this
let len = files.length
if (maxSize > 0) {
files = files.filter(it => it.size <= maxSize)
if (files.length < len) {
len = files.length
this.#toast(`部分文件被忽略, 单文件最大允许 ${parseSize(maxSize)}`)
}
}
if (limit > 0) {
files = files.slice(0, limit - this.#files.length)
if (files.length < len) {
this.#toast(`部分文件被忽略, 最多选择 ${limit} 个文件`)
}
}
if (files.length) {
files = files.map(file => ({ file, id: uuid(), url: '', stat: 0 }))
this.#files = this.#files.concat(files)
this.$emit('upload', {
files,
send: args => {
for (let it of args) {
it.stat = 1
}
this.value = this.#files.map(it => it.url)
}
})
this.$requestUpdate()
}
}
#remove(ev, it, id) {
for (let i in this.#files) {
if (it === this.#files[i]) {
this.#files.splice(i, 1)
break
}
}
this.$requestUpdate()
}
#preview(ev, item) {
this.$refs.view.firstElementChild.src =
item.url || URL.createObjectURL(item.file)
this.$refs.view.style.display = 'flex'
}
#closePreview(ev) {
this.$refs.view.style.display = ''
}
#handleDrag(ev) {
let elem = ev.currentTarget
let outer = elem.parentNode
let { top: _top, left: _left } = offset(outer)
let { top, left } = offset(elem)
let { clientHeight: hh, clientWidth: ww } = outer
let { w, h } = this.#cropData
let ax = ev.x - left
let ay = ev.y - top
ww -= w
hh -= h
let callback = bind(DOC, 'mousemove', ({ x, y }) => {
x -= _left + ax
y -= _top + ay
x = x < 0 ? 0 : x > ww ? ww : x
y = y < 0 ? 0 : y > hh ? hh : y
this.#cropData.x = x
this.#cropData.y = y
elem.style.cssText = `left:${x}px;top:${y}px;width:${w}px;height:${h}px;`
})
bind(DOC, 'mouseup', _ => unbind(DOC, 'mousemove', callback), EV_OPTION)
}
#changeCropRatio(ev) {
if (ev.target === ev.currentTarget) {
return
}
let ratio = +ev.target.dataset.ratio
let { w: ww, h: hh } = this.#workspace
let { w, h } = this.#origin
let { x, y } = this.#cropData
this.#ratio = ratio
if (ratio > 0) {
let min = Math.min(w, h)
if (ratio < 1) {
} else if (ratio === 1) {
w = min
h = min
this.#cropData.w = w
this.#cropData.h = h
} else {
}
this.$refs.crop.style.cssText = `left:${x}px;top:${y}px;width:${w}px;height:${h}px;`
}
}
mounted() {}
render() {
let { disabled } = this
let limited = this.#files.length > 0
let { w, h, x, y } = this.#cropData
let cropStyle = styleMap({
width: w + 'px',
height: h + 'px',
left: x + 'px',
top: y + 'px'
})
console.log(cropStyle)
return html`
<main class="container">
<header class="action-area ${limited ? 'limited' : ''}">
<div ref="button" class="upload-button" @drop.prevent>
<wc-icon name="upload"></wc-icon>
<span>选择图片</span>
<input
class="hidden-input"
title
type="file"
accept="image/*"
disabled=${disabled || limited}
@change=${this.#fileChange}
/>
</div>
<mark ref="err" class="error"></mark>
</header>
<footer
class="file-list"
style=${styleMap({ display: this.#files.length ? '' : 'none' })}
>
${this.#files.map(
it => html`
<section
class="item"
style=${styleMap({
backgroundImage: `url(${it.url})`
})}
>
<wc-icon
name=${it.stat === 0 ? 'loading' : 'search'}
@click=${ev => this.#preview(ev, it)}
></wc-icon>
<wc-icon
class="del"
name="trash"
data-id=${it.id}
@click=${ev => this.#remove(ev, it, it.id)}
></wc-icon>
</section>
`
)}
</footer>
</main>
<div class="preview" ref="view" @click.self=${this.#closePreview}>
<img />
</div>
<div class="edit-panel">
<div class="workspace">
<img src="//static.reduzixun.com/r-time/common/2cc153c8018.webp" />
<div
ref="crop"
class="crop-area"
style=${cropStyle}
@mousedown.prevent=${this.#handleDrag}
>
<i data-id="1"></i>
<i data-id="2"></i>
<i data-id="3"></i>
<i data-id="4"></i>
</div>
</div>
<aside class="statusbar">
<div class="crop" @click=${this.#changeCropRatio}>
<span data-ratio="1">1:1</span>
<span data-ratio="1.3333">4:3</span>
<span data-ratio="0.75">3:4</span>
<span data-ratio="1.7778">16:9</span>
<span data-ratio="0.5625">9:16</span>
<span data-ratio="0">任意比例</span>
</div>
<fieldset>
<legend>原尺寸</legend>
<span>666x666</span>
</fieldset>
<fieldset>
<legend>原体积</legend>
<span>2.33MB</span>
</fieldset>
<fieldset>
<legend>现尺寸</legend>
<span>666x666</span>
</fieldset>
<fieldset>
<legend>现体积</legend>
<span>800KB</span>
</fieldset>
</aside>
<footer class="toolbar">
<span>旋转90度</span>
<span>左右翻转</span>
<span>上下翻转</span>
<span>去色</span>
<span>高斯模糊</span>
<span>增加水印</span>
</footer>
</div>
`
}
}
Uploader.reg('image-uploader')

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@ -12,3 +12,4 @@ import './star.js'
import './switch.js'
import './textarea.js'
import './uploader.js'
import './image-uploader.js'

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@ -171,8 +171,6 @@ class Uploader extends Component {
gap: 6px;
border: 1px solid var(--border-color);
border-radius: 6px;
background: none no-repeat center;
background-size: contain;
--wc-icon-size: 20px;