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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">选择图片</view>
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<!-- #endif -->
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<!-- #ifndef H5 -->
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<view class="upload" @tap="uploadTap">重新选择</view>
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<!-- #endif -->
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<view class="getCropperImage" @tap="getCropperImage(false)">确定</view>
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</view>
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</view>
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</template>
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<script>
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import WeCropper from './weCropper.js';
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export default {
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props: {
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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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boundStyle: {
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type: Object,
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default() {
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return {
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lineWidth: 4,
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borderColor: 'rgb(245, 245, 245)',
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mask: 'rgba(0, 0, 0, 0.35)'
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};
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}
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}
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// // 裁剪框宽度，单位rpx
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// rectWidth: {
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// type: [String, Number],
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// default: 400
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// },
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// // 裁剪框高度，单位rpx
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// rectHeight: {
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// type: [String, Number],
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// default: 400
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// },
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// // 输出图片宽度，单位rpx
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// destWidth: {
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// type: [String, Number],
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// default: 400
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// },
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// // 输出图片高度，单位rpx
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// destHeight: {
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// type: [String, Number],
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// default: 400
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// },
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// // 输出的图片类型，如果发现裁剪的图片很大，可能是因为设置为了"png"，改成"jpg"即可
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// fileType: {
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// type: String,
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// default: 'jpg',
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// },
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// // 生成的图片质量
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// // H5上无效，目前不考虑使用此参数
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// quality: {
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// type: [Number, String],
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// default: 1
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// }
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},
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data() {
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return {
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// 底部导航的高度
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bottomNavHeight: 50,
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originWidth: 200,
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width: 0,
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height: 0,
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cropperOpt: {
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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: (this.width - this.originWidth) / 2,
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y: (this.height - this.originWidth) / 2,
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width: this.originWidth,
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height: this.originWidth
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},
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boundStyle: {
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lineWidth: uni.upx2px(this.boundStyle.lineWidth),
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mask: this.boundStyle.mask,
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color: this.boundStyle.borderColor
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}
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},
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// 裁剪框和输出图片的尺寸，高度默认等于宽度
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// 输出图片宽度，单位px
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destWidth: 200,
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// 裁剪框宽度，单位px
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rectWidth: 200,
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// 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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fileType: 'jpg',
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src: '', // 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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};
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},
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onLoad(option) {
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let rectInfo = uni.getSystemInfoSync();
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this.width = rectInfo.windowWidth;
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this.height = rectInfo.windowHeight - this.bottomNavHeight;
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this.cropperOpt.width = this.width;
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this.cropperOpt.height = this.height;
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this.cropperOpt.pixelRatio = rectInfo.pixelRatio;
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if (option.destWidth) this.destWidth = option.destWidth;
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if (option.rectWidth) {
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let rectWidth = Number(option.rectWidth);
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this.cropperOpt.cut = {
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x: (this.width - rectWidth) / 2,
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y: (this.height - rectWidth) / 2,
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width: rectWidth,
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height: rectWidth
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};
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}
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this.rectWidth = option.rectWidth;
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if (option.fileType) this.fileType = option.fileType;
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// 初始化
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this.cropper = new WeCropper(this.cropperOpt)
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.on('ready', ctx => {
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// wecropper is ready for work!
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})
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.on('beforeImageLoad', ctx => {
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// before picture loaded, i can do something
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})
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.on('imageLoad', ctx => {
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// picture loaded
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})
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.on('beforeDraw', (ctx, instance) => {
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// before canvas draw,i can do something
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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: '#ffffff',
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backgroundColor: '#000000'
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});
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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 => {
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this.src = 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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this.cropper.pushOrign(this.src);
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}
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});
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},
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methods: {
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touchStart(e) {
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this.cropper.touchStart(e);
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},
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touchMove(e) {
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this.cropper.touchMove(e);
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},
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touchEnd(e) {
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this.cropper.touchEnd(e);
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},
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getCropperImage(isPre = false) {
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if(!this.src) return this.$u.toast('请先选择图片再裁剪');
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let cropper_opt = {
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destHeight: Number(this.destWidth), // uni.canvasToTempFilePath要求这些参数为数值
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destWidth: Number(this.destWidth),
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fileType: this.fileType
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};
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this.cropper.getCropperImage(cropper_opt, (path, err) => {
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if (err) {
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uni.showModal({
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title: '温馨提示',
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content: err.message
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});
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} else {
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if (isPre) {
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uni.previewImage({
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current: '', // 当前显示图片的 http 链接
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urls: [path] // 需要预览的图片 http 链接列表
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});
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} else {
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uni.$emit('uAvatarCropper', path);
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this.$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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uploadTap() {
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const self = this;
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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) => {
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self.src = 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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self.cropper.pushOrign(this.src);
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}
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});
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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: #000000;
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color: #eee;
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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: #000;
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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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