300 lines
8.4 KiB
Vue
300 lines
8.4 KiB
Vue
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<template>
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<view class="content">
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<view class="cropper-wrapper" :style="{ height: cropperOpt.height + 'px' }">
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<canvas
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class="cropper"
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:disable-scroll="true"
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@touchstart="touchStart"
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@touchmove="touchMove"
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@touchend="touchEnd"
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:style="{ width: cropperOpt.width, height: cropperOpt.height, backgroundColor: 'rgba(0, 0, 0, 0.8)' }"
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canvas-id="cropper"
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id="cropper"
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></canvas>
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<canvas
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class="cropper"
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:disable-scroll="true"
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:style="{
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position: 'fixed',
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top: `-${cropperOpt.width * cropperOpt.pixelRatio}px`,
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left: `-${cropperOpt.height * cropperOpt.pixelRatio}px`,
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width: `${cropperOpt.width * cropperOpt.pixelRatio}px`,
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height: `${cropperOpt.height * cropperOpt.pixelRatio}`
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}"
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canvas-id="targetId"
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id="targetId"
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></canvas>
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</view>
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<view class="cropper-buttons safe-area-padding" :style="{ height: bottomNavHeight + 'px' }">
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<!-- #ifdef H5 -->
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<view class="upload" @tap="uploadTap">{{ t('avatarCropper.select') }}</view>
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<!-- #endif -->
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<!-- #ifndef H5 -->
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<view class="upload" @tap="uploadTap">{{ t('avatarCropper.reselect') }}</view>
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<!-- #endif -->
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<view class="getCropperImage" @tap="() => getCropperImage(false)">{{ t('avatarCropper.confirm') }}</view>
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</view>
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</view>
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</template>
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<script lang="ts">
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export default {
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name: 'u-avatar-cropper',
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options: {
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addGlobalClass: true,
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// #ifndef MP-TOUTIAO
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virtualHost: true,
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// #endif
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styleIsolation: 'shared'
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}
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};
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</script>
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<script setup lang="ts">
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// @ts-nocheck
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import { ref, reactive, onMounted } from 'vue';
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import { $u, useLocale } from '../..';
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// 兼容 UMD/ESM 导入 weCropper.js
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import WeCropper from './weCropper';
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import { AvatarCropperProps } from './types';
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/**
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* 裁剪矩形框的样式，其中可包含的属性为lineWidth-边框宽度(单位rpx)，color: 边框颜色，
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* mask-遮罩颜色，一般设置为一个rgba的透明度，如"rgba(0, 0, 0, 0.35)"
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*/
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const props = defineProps(AvatarCropperProps);
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const { t } = useLocale();
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/**
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* 组合式API变量声明
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* 保留所有说明注释
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*/
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const bottomNavHeight = ref(50); // 底部导航的高度
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const originWidth = ref(200);
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const width = ref(0);
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const height = ref(0);
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const src = ref(''); // 选择的图片路径，用于在点击确定时，判断是否选择了图片
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const destWidth = ref(200); // 输出图片宽度，单位px
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const rectWidth = ref(200); // 裁剪框宽度，单位px
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const fileType = ref('jpg'); // 输出的图片类型，如果'png'类型发现裁剪的图片太大，改成"jpg"即可
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// cropperOpt 需响应式，且类型安全
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const cropperOpt = reactive({
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id: 'cropper',
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targetId: 'targetCropper',
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pixelRatio: 1,
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width: 0,
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height: 0,
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scale: 2.5,
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zoom: 8,
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cut: {
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x: 0,
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y: 0,
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width: originWidth.value,
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height: originWidth.value
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},
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boundStyle: {
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lineWidth: 0,
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mask: '',
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color: ''
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}
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});
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let cropper: any = null; // WeCropper 实例，类型 any，建议后续补充类型声明
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/**
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* 组件挂载时初始化 cropper
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* 保留所有说明注释
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*/
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onMounted(() => {
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// 获取系统信息
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const rectInfo = uni.getSystemInfoSync();
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width.value = rectInfo.windowWidth;
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height.value = rectInfo.windowHeight - bottomNavHeight.value;
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cropperOpt.width = width.value;
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cropperOpt.height = height.value;
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cropperOpt.pixelRatio = rectInfo.pixelRatio;
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// 初始化裁剪框
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cropperOpt.cut = {
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x: (width.value - originWidth.value) / 2,
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y: (height.value - originWidth.value) / 2,
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width: originWidth.value,
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height: originWidth.value
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};
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cropperOpt.boundStyle = {
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lineWidth: uni.upx2px(props.boundStyle.lineWidth),
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mask: props.boundStyle.mask,
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color: props.boundStyle.borderColor
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};
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// 设置导航栏样式，以免用户在page.json中没有设置为黑色背景
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uni.setNavigationBarColor({
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frontColor: 'var(--u-white-color)',
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backgroundColor: 'var(--u-bg-black)'
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});
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// 初始化 cropper 实例
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cropper = new WeCropper(cropperOpt)
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.on('ready', (ctx: any) => {
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// wecropper is ready for work!
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})
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.on('beforeImageLoad', (ctx: any) => {
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// before picture loaded, i can do something
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})
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.on('imageLoad', (ctx: any) => {
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// picture loaded
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})
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.on('beforeDraw', (ctx: any, instance: any) => {
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// before canvas draw,i can do something
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});
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// 选择图片
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uni.chooseImage({
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count: 1, // 默认9
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sizeType: ['compressed'], // 可以指定是原图还是压缩图，默认二者都有
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sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
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success: (res: UniApp.ChooseImageSuccessCallbackResult) => {
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src.value = res.tempFilePaths[0];
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// 获取裁剪图片资源后，给data添加src属性及其值
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cropper.pushOrign(src.value);
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}
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});
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});
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/**
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* 触摸开始事件
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* @param e 事件对象
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*/
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function touchStart(e: any) {
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cropper && cropper.touchStart(e);
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}
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/**
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* 触摸移动事件
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* @param e 事件对象
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*/
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function touchMove(e: any) {
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cropper && cropper.touchMove(e);
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}
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/**
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* 触摸结束事件
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* @param e 事件对象
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*/
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function touchEnd(e: any) {
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cropper && cropper.touchEnd(e);
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}
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/**
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* 获取裁剪后的图片
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* @param isPre 是否预览
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*/
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function getCropperImage(isPre = false) {
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if (!src.value) return $u.toast(t('avatarCropper.noSelect'));
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const cropper_opt = {
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destHeight: Number(destWidth.value), // uni.canvasToTempFilePath要求这些参数为数值
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destWidth: Number(destWidth.value),
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fileType: fileType.value
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};
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cropper.getCropperImage(cropper_opt, (path: string, err: any) => {
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if (err) {
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uni.showModal({
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title: t('avatarCropper.modalTitle'),
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content: err.message
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});
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} else {
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if (isPre) {
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uni.previewImage({
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current: '', // 当前显示图片的 http 链接
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urls: [path] // 需要预览的图片 http 链接列表
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});
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} else {
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uni.$emit('uAvatarCropper', path);
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$u.route({
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type: 'back'
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});
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}
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}
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});
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}
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/**
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* 重新选择图片
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*/
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function uploadTap() {
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uni.chooseImage({
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count: 1, // 默认9
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sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有
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sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
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success: (res: UniApp.ChooseImageSuccessCallbackResult) => {
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src.value = res.tempFilePaths[0];
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// 获取裁剪图片资源后，给data添加src属性及其值
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cropper.pushOrign(src.value);
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}
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});
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}
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</script>
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<style scoped lang="scss">
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@import '../../libs/css/style.components.scss';
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.content {
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background: rgba(255, 255, 255, 1);
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}
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.cropper {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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z-index: 11;
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}
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.cropper-buttons {
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background-color: var(--u-bg-black);
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color: var(--u-divider-color);
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}
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.cropper-wrapper {
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position: relative;
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@include vue-flex;
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flex-direction: row;
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justify-content: space-between;
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align-items: center;
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width: 100%;
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background-color: var(--u-bg-black);
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}
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.cropper-buttons {
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width: 100vw;
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@include vue-flex;
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flex-direction: row;
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justify-content: space-between;
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align-items: center;
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position: fixed;
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bottom: 0;
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left: 0;
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font-size: 28rpx;
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}
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.cropper-buttons .upload,
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.cropper-buttons .getCropperImage {
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width: 50%;
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text-align: center;
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}
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.cropper-buttons .upload {
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text-align: left;
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padding-left: 50rpx;
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}
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.cropper-buttons .getCropperImage {
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text-align: right;
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padding-right: 50rpx;
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}
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</style>
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