New file |
| | |
| | | // nvue操作dom的库,用于获取dom的尺寸信息 |
| | | const dom = uni.requireNativePlugin('dom') |
| | | // nvue中用于操作元素动画的库,类似于uni.animation,只不过uni.animation不能用于nvue |
| | | const animation = uni.requireNativePlugin('animation') |
| | | |
| | | export default { |
| | | data() { |
| | | return { |
| | | // 是否滑动中 |
| | | moving: false, |
| | | // 状态,open-打开状态,close-关闭状态 |
| | | status: 'close', |
| | | // 开始触摸点的X和Y轴坐标 |
| | | startX: 0, |
| | | startY: 0, |
| | | // 所有隐藏按钮的尺寸信息数组 |
| | | buttons: [], |
| | | // 所有按钮的总宽度 |
| | | buttonsWidth: 0, |
| | | // 记录上一次移动的位置值 |
| | | moveX: 0, |
| | | // 记录上一次滑动的位置,用于前后两次做对比,如果移动的距离小于某一阈值,则认为前后之间没有移动,为了解决可能存在的通信阻塞问题 |
| | | lastX: 0 |
| | | } |
| | | }, |
| | | computed: { |
| | | // 获取过渡时间 |
| | | getDuratin() { |
| | | let duration = String(this.duration) |
| | | // 如果ms为单位,返回ms的数值部分 |
| | | if (duration.indexOf('ms') >= 0) return parseInt(duration) |
| | | // 如果s为单位,为了得到ms的数值,需要乘以1000 |
| | | if (duration.indexOf('s') >= 0) return parseInt(duration) * 1000 |
| | | // 如果值传了数值,且小于30,认为是s单位 |
| | | duration = Number(duration) |
| | | return duration < 30 ? duration * 1000 : duration |
| | | } |
| | | }, |
| | | watch: { |
| | | show: { |
| | | immediate: true, |
| | | handler(n) { |
| | | // if(n === true) { |
| | | // uni.$u.sleep(50).then(() => { |
| | | // this.openSwipeAction() |
| | | // }) |
| | | // } else { |
| | | // this.closeSwipeAction() |
| | | // } |
| | | } |
| | | } |
| | | }, |
| | | mounted() { |
| | | uni.$u.sleep(20).then(() => { |
| | | this.queryRect() |
| | | }) |
| | | }, |
| | | methods: { |
| | | close() { |
| | | this.closeSwipeAction() |
| | | }, |
| | | // 触摸单元格 |
| | | touchstart(event) { |
| | | if (this.disabled) return |
| | | this.closeOther() |
| | | const { touches } = event |
| | | // 记录触摸开始点的坐标值 |
| | | this.startX = touches[0].pageX |
| | | this.startY = touches[0].pageY |
| | | }, |
| | | // // 触摸滑动 |
| | | touchmove(event) { |
| | | if (this.disabled) return |
| | | const { touches } = event |
| | | const { pageX } = touches[0] |
| | | const { pageY } = touches[0] |
| | | let moveX = pageX - this.startX |
| | | const moveY = pageY - this.startY |
| | | const { buttonsWidth } = this |
| | | const len = this.buttons.length |
| | | |
| | | // 判断前后两次的移动距离,如果小于一定值,则不进行移动处理 |
| | | if (Math.abs(pageX - this.lastX) < 0.3) return |
| | | this.lastX = pageX |
| | | |
| | | // 移动的X轴距离大于Y轴距离,也即终点与起点位置连线,与X轴夹角小于45度时,禁止页面滚动 |
| | | if (Math.abs(moveX) > Math.abs(moveY) || Math.abs(moveX) > this.threshold) { |
| | | event.stopPropagation() |
| | | } |
| | | // 如果移动的X轴距离小于Y轴距离,也即终点位置与起点位置连线,与Y轴夹角小于45度时,认为是页面上下滑动,而不是左右滑动单元格 |
| | | if (Math.abs(moveX) < Math.abs(moveY)) return |
| | | |
| | | // 限制右滑的距离,不允许内容部分往右偏移,右滑会导致X轴偏移值大于0,以此做判断 |
| | | // 此处不能直接return,因为滑动过程中会缺失某些关键点坐标,会导致错乱,最好的办法就是 |
| | | // 在超出后,设置为0 |
| | | if (this.status === 'open') { |
| | | // 在开启状态下,向左滑动,需忽略 |
| | | if (moveX < 0) moveX = 0 |
| | | // 想要收起菜单,最大能移动的距离为按钮的总宽度 |
| | | if (moveX > buttonsWidth) moveX = buttonsWidth |
| | | // 如果是已经打开了的状态,向左滑动时,移动收起菜单 |
| | | this.moveSwipeAction(-buttonsWidth + moveX) |
| | | } else { |
| | | // 关闭状态下,右滑动需忽略 |
| | | if (moveX > 0) moveX = 0 |
| | | // 滑动的距离不允许超过所有按钮的总宽度,此时只能是左滑,最终设置按钮的总宽度,同时为负数 |
| | | if (Math.abs(moveX) > buttonsWidth) moveX = -buttonsWidth |
| | | // 只要是在滑过程中,就不断移动菜单的内容部分,从而使隐藏的菜单显示出来 |
| | | this.moveSwipeAction(moveX) |
| | | } |
| | | }, |
| | | // 单元格结束触摸 |
| | | touchend(event) { |
| | | if (this.disabled) return |
| | | const touches = event.changedTouches ? event.changedTouches[0] : {} |
| | | const { pageX } = touches |
| | | const { pageY } = touches |
| | | const { buttonsWidth } = this |
| | | this.moveX = pageX - this.startX |
| | | if (this.status === 'open') { |
| | | // 在展开的状态下,继续左滑,无需操作 |
| | | if (this.moveX < 0) this.moveX = 0 |
| | | if (this.moveX > buttonsWidth) this.moveX = buttonsWidth |
| | | // 在开启状态下,点击一下内容区域,moveX为0,也即没有进行移动,这时执行收起菜单逻辑 |
| | | if (this.moveX === 0) { |
| | | return this.closeSwipeAction() |
| | | } |
| | | // 在开启状态下,滑动距离小于阈值,则默认为不关闭,同时恢复原来的打开状态 |
| | | if (Math.abs(this.moveX) < this.threshold) { |
| | | this.openSwipeAction() |
| | | } else { |
| | | // 如果滑动距离大于阈值,则执行收起逻辑 |
| | | this.closeSwipeAction() |
| | | } |
| | | } else { |
| | | // 在关闭的状态下,右滑,无需操作 |
| | | if (this.moveX >= 0) this.moveX = 0 |
| | | if (this.moveX <= -buttonsWidth) this.moveX = -buttonsWidth |
| | | // 理由同上 |
| | | if (Math.abs(this.moveX) < this.threshold) { |
| | | this.closeSwipeAction() |
| | | } else { |
| | | this.openSwipeAction() |
| | | } |
| | | } |
| | | }, |
| | | // 移动滑动选择器内容区域,同时显示出其隐藏的菜单 |
| | | moveSwipeAction(moveX) { |
| | | if (this.moving) return |
| | | this.moving = true |
| | | |
| | | let previewButtonsMoveX = 0 |
| | | const len = this.buttons.length |
| | | animation.transition(this.$refs['u-swipe-action-item__content'].ref, { |
| | | styles: { |
| | | transform: `translateX(${moveX}px)` |
| | | }, |
| | | timingFunction: 'linear' |
| | | }, () => { |
| | | this.moving = false |
| | | }) |
| | | // 按钮的组的长度 |
| | | for (let i = len - 1; i >= 0; i--) { |
| | | const buttonRef = this.$refs[`u-swipe-action-item__right__button-${i}`][0].ref |
| | | // 通过比例,得出元素自身该移动的距离 |
| | | const translateX = this.buttons[i].width / this.buttonsWidth * moveX |
| | | // 最终移动的距离,是通过自身比例算出的距离,再加上在它之前所有按钮移动的距离之和 |
| | | const realTranslateX = translateX + previewButtonsMoveX |
| | | animation.transition(buttonRef, { |
| | | styles: { |
| | | transform: `translateX(${realTranslateX}px)` |
| | | }, |
| | | duration: 0, |
| | | delay: 0, |
| | | timingFunction: 'linear' |
| | | }, () => {}) |
| | | // 记录本按钮之前的所有按钮的移动距离之和 |
| | | previewButtonsMoveX += translateX |
| | | } |
| | | }, |
| | | // 关闭菜单 |
| | | closeSwipeAction() { |
| | | if (this.status === 'close') return |
| | | this.moving = true |
| | | const { buttonsWidth } = this |
| | | animation.transition(this.$refs['u-swipe-action-item__content'].ref, { |
| | | styles: { |
| | | transform: 'translateX(0px)' |
| | | }, |
| | | duration: this.getDuratin, |
| | | timingFunction: 'ease-in-out' |
| | | }, () => { |
| | | this.status = 'close' |
| | | this.moving = false |
| | | this.closeHandler() |
| | | }) |
| | | // 按钮的组的长度 |
| | | const len = this.buttons.length |
| | | for (let i = len - 1; i >= 0; i--) { |
| | | const buttonRef = this.$refs[`u-swipe-action-item__right__button-${i}`][0].ref |
| | | // 如果不满足边界条件,返回 |
| | | if (this.buttons.length === 0 || !this.buttons[i] || !this.buttons[i].width) return |
| | | |
| | | animation.transition(buttonRef, { |
| | | styles: { |
| | | transform: 'translateX(0px)' |
| | | }, |
| | | duration: this.getDuratin, |
| | | timingFunction: 'ease-in-out' |
| | | }, () => {}) |
| | | } |
| | | }, |
| | | // 打开菜单 |
| | | openSwipeAction() { |
| | | if (this.status === 'open') return |
| | | this.moving = true |
| | | const buttonsWidth = -this.buttonsWidth |
| | | let previewButtonsMoveX = 0 |
| | | animation.transition(this.$refs['u-swipe-action-item__content'].ref, { |
| | | styles: { |
| | | transform: `translateX(${buttonsWidth}px)` |
| | | }, |
| | | duration: this.getDuratin, |
| | | timingFunction: 'ease-in-out' |
| | | }, () => { |
| | | this.status = 'open' |
| | | this.moving = false |
| | | this.openHandler() |
| | | }) |
| | | // 按钮的组的长度 |
| | | const len = this.buttons.length |
| | | for (let i = len - 1; i >= 0; i--) { |
| | | const buttonRef = this.$refs[`u-swipe-action-item__right__button-${i}`][0].ref |
| | | // 如果不满足边界条件,返回 |
| | | if (this.buttons.length === 0 || !this.buttons[i] || !this.buttons[i].width) return |
| | | // 通过比例,得出元素自身该移动的距离 |
| | | const translateX = this.buttons[i].width / this.buttonsWidth * buttonsWidth |
| | | // 最终移动的距离,是通过自身比例算出的距离,再加上在它之前所有按钮移动的距离之和 |
| | | const realTranslateX = translateX + previewButtonsMoveX |
| | | animation.transition(buttonRef, { |
| | | styles: { |
| | | transform: `translateX(${realTranslateX}px)` |
| | | }, |
| | | duration: this.getDuratin, |
| | | timingFunction: 'ease-in-out' |
| | | }, () => {}) |
| | | previewButtonsMoveX += translateX |
| | | } |
| | | }, |
| | | // 查询按钮节点信息 |
| | | queryRect() { |
| | | // 历遍所有按钮数组,通过getRectByDom返回一个promise |
| | | const promiseAll = this.rightOptions.map((item, index) => this.getRectByDom(this.$refs[`u-swipe-action-item__right__button-${index}`][0])) |
| | | // 通过promise.all方法,让所有按钮的查询结果返回一个数组的形式 |
| | | Promise.all(promiseAll).then((sizes) => { |
| | | this.buttons = sizes |
| | | // 计算所有按钮总宽度 |
| | | this.buttonsWidth = sizes.reduce((sum, cur) => sum + cur.width, 0) |
| | | }) |
| | | }, |
| | | // 通过nvue的dom模块,查询节点信息 |
| | | getRectByDom(ref) { |
| | | return new Promise((resolve) => { |
| | | dom.getComponentRect(ref, (res) => { |
| | | resolve(res.size) |
| | | }) |
| | | }) |
| | | } |
| | | } |
| | | } |