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- Component({
- properties: {
- radius: Number, //半径 单位px
- useSlot: Boolean
- },
- data: {
- top: "550px",
- left: "345px",
- viewHeight: null
- },
- lifetimes: {
- attached: function () {
- let that = this;
- wx.getSystemInfo({
- success: (res => that.setData({
- viewHeight: res.windowHeight
- }))
- });
- },
- },
- methods: {
- viewTouchMove(e) {
- let left = e.touches[0].pageX;
- if (left > (375 - this.data.radius)) left = 375 - (this.data.radius / 2);
- if (left < 0 + this.data.radius) left = 0 + this.data.radius;
- let top = e.touches[0].pageY;
- if (top < 0 + this.data.radius) top = 0 + this.data.radius;
- if (top > this.data.viewHeight - this.data.radius) top = this.data.viewHeight - this.data.radius;
- this.setData({
- left: left + 'px',
- top: top + 'px'
- })
- }
- }
- })
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