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| import { VantComponent } from '../common/component';
| import { getRect, requestAnimationFrame } from '../common/utils';
| VantComponent({
| props: {
| text: {
| type: String,
| value: '',
| observer: 'init',
| },
| mode: {
| type: String,
| value: '',
| },
| url: {
| type: String,
| value: '',
| },
| openType: {
| type: String,
| value: 'navigate',
| },
| delay: {
| type: Number,
| value: 1,
| },
| speed: {
| type: Number,
| value: 50,
| observer: 'init',
| },
| scrollable: {
| type: Boolean,
| value: true,
| },
| leftIcon: {
| type: String,
| value: '',
| },
| color: String,
| backgroundColor: String,
| background: String,
| wrapable: Boolean,
| },
| data: {
| show: true,
| },
| created() {
| this.resetAnimation = wx.createAnimation({
| duration: 0,
| timingFunction: 'linear',
| });
| },
| destroyed() {
| this.timer && clearTimeout(this.timer);
| },
| mounted() {
| this.init();
| },
| methods: {
| init() {
| requestAnimationFrame(() => {
| Promise.all([
| getRect(this, '.van-notice-bar__content'),
| getRect(this, '.van-notice-bar__wrap'),
| ]).then((rects) => {
| const [contentRect, wrapRect] = rects;
| if (
| contentRect == null ||
| wrapRect == null ||
| !contentRect.width ||
| !wrapRect.width
| ) {
| return;
| }
| const { speed, scrollable, delay } = this.data;
| if (scrollable || wrapRect.width < contentRect.width) {
| const duration = (contentRect.width / speed) * 1000;
| this.wrapWidth = wrapRect.width;
| this.contentWidth = contentRect.width;
| this.duration = duration;
| this.animation = wx.createAnimation({
| duration,
| timingFunction: 'linear',
| delay,
| });
| this.scroll();
| }
| });
| });
| },
| scroll() {
| this.timer && clearTimeout(this.timer);
| this.timer = null;
| this.setData({
| animationData: this.resetAnimation
| .translateX(this.wrapWidth)
| .step()
| .export(),
| });
| requestAnimationFrame(() => {
| this.setData({
| animationData: this.animation
| .translateX(-this.contentWidth)
| .step()
| .export(),
| });
| });
| this.timer = setTimeout(() => {
| this.scroll();
| }, this.duration);
| },
| onClickIcon(event) {
| if (this.data.mode === 'closeable') {
| this.timer && clearTimeout(this.timer);
| this.timer = null;
| this.setData({ show: false });
| this.$emit('close', event.detail);
| }
| },
| onClick(event) {
| this.$emit('click', event);
| },
| },
| });
|
|
