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143 lines
2.9 KiB
143 lines
2.9 KiB
<template>
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<view>
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<view
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id="_drag_button"
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class="drag"
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:style="'left: ' + left + 'px; top:' + top + 'px;'"
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@touchstart="touchstart"
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@touchmove.stop.prevent="touchmove"
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@touchend="touchend"
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@click.stop.prevent="click"
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:class="{transition: isDock && !isMove }"
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>
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<text>{{ text }}</text>
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</view>
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</view>
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</template>
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<script>
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export default {
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name: 'drag-button',
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props: {
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isDock:{
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type: Boolean,
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default: false
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},
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existTabBar:{
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type: Boolean,
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default: false
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}
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},
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data() {
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return {
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top:0,
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left:0,
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width: 0,
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height: 0,
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offsetWidth: 0,
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offsetHeight: 0,
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windowWidth: 0,
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windowHeight: 0,
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isMove: true,
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edge: 10,
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text: '客服'
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}
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},
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mounted() {
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const sys = uni.getSystemInfoSync();
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this.windowWidth = sys.windowWidth;
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this.windowHeight = sys.windowHeight;
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// #ifdef APP-PLUS
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this.existTabBar && (this.windowHeight -= 50);
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// #endif
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if (sys.windowTop) {
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this.windowHeight += sys.windowTop;
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}
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console.log(sys)
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const query = uni.createSelectorQuery().in(this);
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query.select('#_drag_button').boundingClientRect(data => {
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this.width = data.width;
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this.height = data.height;
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this.offsetWidth = data.width / 2;
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this.offsetHeight = data.height / 2;
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this.left = this.windowWidth - this.width - this.edge;
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this.top = this.windowHeight - this.height - this.edge;
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}).exec();
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},
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methods: {
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click() {
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this.$emit('btnClick');
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},
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touchstart(e) {
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this.$emit('btnTouchstart');
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},
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touchmove(e) {
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// 单指触摸
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if (e.touches.length !== 1) {
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return false;
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}
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this.isMove = true;
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this.left = e.touches[0].clientX - this.offsetWidth;
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let clientY = e.touches[0].clientY - this.offsetHeight;
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// #ifdef H5
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clientY += this.height;
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// #endif
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let edgeBottom = this.windowHeight - this.height - this.edge;
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// 上下触及边界
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if (clientY < this.edge) {
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this.top = this.edge;
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} else if (clientY > edgeBottom) {
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this.top = edgeBottom;
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} else {
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this.top = clientY
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}
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},
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touchend(e) {
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if (this.isDock) {
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let edgeRigth = this.windowWidth - this.width - this.edge;
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if (this.left < this.windowWidth / 2 - this.offsetWidth) {
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this.left = this.edge;
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} else {
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this.left = edgeRigth;
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}
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}
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this.isMove = false;
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this.$emit('btnTouchend');
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},
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}}
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</script>
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<style lang="scss">
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.drag {
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display: flex;
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justify-content: center;
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align-items: center;
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background-color: #46B98E;
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box-shadow: 0 0 6upx rgba(0, 0, 0, 0.4);
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color: $uni-text-color-inverse;
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width: 80upx;
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height: 80upx;
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border-radius: 50%;
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font-size: $uni-font-size-sm;
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position: fixed;
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z-index: 999999;
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&.transition {
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transition: left .3s ease,top .3s ease;
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}
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}
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</style>
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