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- <template>
- <text
- class="u-count-num"
- :style="{
- fontSize: $u.addUnit(fontSize),
- fontWeight: bold ? 'bold' : 'normal',
- color: color
- }"
- >{{ displayValue }}</text>
- </template>
- <script>
- import props from './props.js';
- export default {
- name: 'u-count-to',
- data() {
- return {
- localStartVal: this.startVal,
- displayValue: this.formatNumber(this.startVal),
- printVal: null,
- paused: false,
- localDuration: Number(this.duration),
- startTime: null,
- timestamp: null,
- remaining: null,
- rAF: null,
- lastTime: 0
- };
- },
- mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
- computed: {
- countDown() {
- return this.startVal > this.endVal;
- }
- },
- watch: {
- startVal() {
- this.autoplay && this.start();
- },
- endVal() {
- this.autoplay && this.start();
- }
- },
- mounted() {
- this.autoplay && this.start();
- },
- methods: {
- easingFn(t, b, c, d) {
- return (c * (-Math.pow(2, (-10 * t) / d) + 1) * 1024) / 1023 + b;
- },
- requestAnimationFrame(callback) {
- const currTime = new Date().getTime();
-
- const timeToCall = Math.max(0, 16 - (currTime - this.lastTime));
- const id = setTimeout(() => {
- callback(currTime + timeToCall);
- }, timeToCall);
- this.lastTime = currTime + timeToCall;
- return id;
- },
- cancelAnimationFrame(id) {
- clearTimeout(id);
- },
-
- start() {
- this.localStartVal = this.startVal;
- this.startTime = null;
- this.localDuration = this.duration;
- this.paused = false;
- this.rAF = this.requestAnimationFrame(this.count);
- },
-
- reStart() {
- if (this.paused) {
- this.resume();
- this.paused = false;
- } else {
- this.stop();
- this.paused = true;
- }
- },
-
- stop() {
- this.cancelAnimationFrame(this.rAF);
- },
-
- resume() {
- if (!this.remaining) return
- this.startTime = 0;
- this.localDuration = this.remaining;
- this.localStartVal = this.printVal;
- this.requestAnimationFrame(this.count);
- },
-
- reset() {
- this.startTime = null;
- this.cancelAnimationFrame(this.rAF);
- this.displayValue = this.formatNumber(this.startVal);
- },
- count(timestamp) {
- if (!this.startTime) this.startTime = timestamp;
- this.timestamp = timestamp;
- const progress = timestamp - this.startTime;
- this.remaining = this.localDuration - progress;
- if (this.useEasing) {
- if (this.countDown) {
- this.printVal = this.localStartVal - this.easingFn(progress, 0, this.localStartVal - this.endVal, this.localDuration);
- } else {
- this.printVal = this.easingFn(progress, this.localStartVal, this.endVal - this.localStartVal, this.localDuration);
- }
- } else {
- if (this.countDown) {
- this.printVal = this.localStartVal - (this.localStartVal - this.endVal) * (progress / this.localDuration);
- } else {
- this.printVal = this.localStartVal + (this.endVal - this.localStartVal) * (progress / this.localDuration);
- }
- }
- if (this.countDown) {
- this.printVal = this.printVal < this.endVal ? this.endVal : this.printVal;
- } else {
- this.printVal = this.printVal > this.endVal ? this.endVal : this.printVal;
- }
- this.displayValue = this.formatNumber(this.printVal) || 0;
- if (progress < this.localDuration) {
- this.rAF = this.requestAnimationFrame(this.count);
- } else {
- this.$emit('end');
- }
- },
-
- isNumber(val) {
- return !isNaN(parseFloat(val));
- },
- formatNumber(num) {
-
- num = Number(num);
- num = num.toFixed(Number(this.decimals));
- num += '';
- const x = num.split('.');
- let x1 = x[0];
- const x2 = x.length > 1 ? this.decimal + x[1] : '';
- const rgx = /(\d+)(\d{3})/;
- if (this.separator && !this.isNumber(this.separator)) {
- while (rgx.test(x1)) {
- x1 = x1.replace(rgx, '$1' + this.separator + '$2');
- }
- }
- return x1 + x2;
- },
- destroyed() {
- this.cancelAnimationFrame(this.rAF);
- }
- }
- };
- </script>
- <style lang="scss" scoped>
- @import "../../libs/css/components.scss";
- .u-count-num {
-
- display: inline-flex;
-
- text-align: center;
- }
- </style>
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