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@@ -0,0 +1,157 @@
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+<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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+ <u-badge absolute :offset="[15,10]" type="error" :count="badge"></u-badge>
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+ <u-image width="70rpx" height="70rpx" :src="dragPic"></u-image>
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+ </view>
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+ </view>
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+ </view>
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+</template>
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+
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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:{ // 是否启用自动停靠
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+ type: Boolean,
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+ default: false
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+ },
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+ existTabBar:{ // 当前页面是否包含tabbar
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+ type: Boolean,
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+ default: false
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+ },
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+ dragPic: { // 图标显示时,图标链接
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+ type: String,
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+ default: ''
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+ },
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+ badge: { // 图标显示时,角标数字
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+ type: [Number, String],
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+ default: ''
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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: '按钮'
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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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+
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+ this.windowWidth = sys.windowWidth;
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+ this.windowHeight = sys.windowHeight;
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+
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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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+
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+ const query = uni.createSelectorQuery().in(this);
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+ query.select('#_drag_button').boundingClientRect(data => {
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+ // console.log(data,'--------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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+ this.top = this.windowHeight * 0.65;
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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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+
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+ this.isMove = true;
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+
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+ this.left = e.touches[0].clientX - this.offsetWidth;
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+
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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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+
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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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+ },
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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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+
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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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+ }
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+
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+ this.isMove = false;
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+
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+ this.$emit('btnTouchend');
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+ },
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+ }}
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+</script>
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+
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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: rgba(0, 0, 0, 0.5);
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+ background-color: #fff;
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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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+
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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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+
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+</style>
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