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-// cropper/cropper.js
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-Component({
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- /**
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- * 组件的属性列表
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- */
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- properties: {
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- /**
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- * @type number
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- * @description 组件裁剪显示区域的最大比例,如果裁剪的图片过长,则做限制,默认最大宽高比例为 宽640 / 高960 (宽高比例)
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- * @example 1 如果CROPPER_WIDTH宽度是720px,那么裁剪区域的高度也就是 CROPPER_WIDTH / cropperRatio 为 720px;
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- */
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- cropperRatio: {
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- type: Number,
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- value: 1
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- },
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-
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- /**
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- * @type number
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- * @description 初始化的裁剪比例
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- * @example 0 默认初始化的裁剪区域宽高为图片的宽高,且裁剪比例不固定
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- * @example 0.5 宽高比例固定,且宽和高的比例为 1 : 2 的比例
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- * @example 2 宽高比例固定,且宽和高的比例为 2 : 1 的比例
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- */
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- cutRatio: {
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- type: Number,
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- value: 1
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- },
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-
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- /**
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- * @type string
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- * @description 需要裁剪的图片地址
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- */
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- imageSrc: {
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- type: String,
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- value: ''
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- },
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-
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- /**
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- * @type number
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- * @description 裁剪区域的宽度
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- */
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- cropperWidth: {
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- type: Number,
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- value: 720
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- },
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-
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- /**
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- * @type number
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- * @description 最小裁剪的范围
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- */
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- minCropperW: {
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- type: Number,
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- value: 100
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- }
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- },
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-
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- /**
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- * 组件的初始数据
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- */
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- data: {
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- /**
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- * @type boolean
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- * @description 图片在进行网络请求完成之后显示,showImg用于控制图片显示时机
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- */
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- showImg: false,
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-
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- /**
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- * @
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- */
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- // 动态的宽高
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- cropperW: null,
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- cropperH: null,
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-
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- // 图片缩放值
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- scaleP: 0,
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- // 裁剪框 宽高
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- cutL: 0,
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- cutT: 0,
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- cutB: 0,
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- cutR: 0,
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-
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- qualityWidth: null,
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- innerAspectRadio: null,
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-
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- filePath: null
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- },
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-
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- /**
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- * 组件的方法列表
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- */
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- methods: {
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- close() {
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- wx.hideLoading()
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- this.triggerEvent('close')
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- },
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-
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- /**
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- * 初始化变量信息
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- */
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- initStaticData() {
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- this.drag = {
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- CUT_L: null, // 初始化拖拽元素的left值
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- CUT_T: null, // ...top值
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- CUT_R: null, // ...right值
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- CUT_B: null, // ...bottom值
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-
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- CUT_W: null, // 初始化拖拽元素的宽度
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- CUT_H: null, // 初始化拖拽元素的高度
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-
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- IS_TOUCH_CONTENT: false, // 是否是可拖动的状态(拖拽裁剪框)
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- IS_TOUCH_SIDE: false, // 是否可以拖拽边框
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- IS_NO_DRAG: false,
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-
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- // 拖拽区域的时候设置
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- TOUCH_OFFSET_X: null, // 手按下相对于裁剪框左边的距离
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- TOUCH_OFFSET_Y: null, // 手按下相对于裁剪框上边的距离
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-
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- TOUCH_MAX_MOVE_SECTION_X: null, // 移动区域的时候移动的x方向最大区间
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- TOUCH_MAX_MOVE_SECTION_Y: null, // 移动区域的时候移动的y方向最大区间
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-
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- MOVE_PAGE_X: null, // 手移动的时候x的位置
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- MOVE_PAGE_Y: null, // 手移动的时候Y的位置
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-
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- SPACE_TOP_POSITION: null,
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- SPACE_LEFT_POSITION: null,
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- SPACE_RIGHT_POSITION: null,
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- SPACE_BOTTOM_POSITION: null
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- }
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-
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- this.conf = {
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- // 图片比例
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- IMG_RATIO: null,
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-
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- // 图片实际宽高
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- IMG_REAL_W: null, // 图片实际的宽度
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- IMG_REAL_H: null, // 图片实际的高度
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-
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- // 裁剪除黑色区域以内的高度
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- CROPPER_HEIGHT: null, // 图片背景区域宽度
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- CROPPER_WIDTH: null, // 图标背景区域高度
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-
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- // 设置最小裁剪宽度高度
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- CUT_MIN_W: null, // 最小限制多宽
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- CUT_MIN_H: null, // 最小限制多高
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-
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- // 裁剪图片区域的信息
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- // CROPPER_IMG_W: null, // 也就是 data.cropperW
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- // CROPPER_IMG_H: null, // 也就是 data.cropperH
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-
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- // 移动的比例
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- DRAG_MOVE_RATIO: 750 / wx.getSystemInfoSync().windowWidth, //移动时候的比例,
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-
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- INIT_DRAG_POSITION: 0, // 初始化屏幕宽度和裁剪区域的宽度之差,用于设置初始化裁剪的宽度
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- DRAW_IMAGE_W: null, // 设置生成的图片宽度
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-
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- // 最大可显示得图片宽度,需要设定最大值,否则安卓部分机器会闪退, 控制qualityWidth的最大值
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- MAX_QW: 2550,
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-
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- /**
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- * 最小裁剪宽度 由于设置了裁剪的UI样式,裁剪的宽高必须要有最小宽度,这个宽度是裁剪长或者宽的最短一方的宽度
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- * 如 400 200
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- * 那么如果只能设置为100的时候
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- * 那么最小缩放到200 100的效果,之后只能放大不能缩小
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- */
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- MIN_CROPPER_DIS: 100
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- }
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- },
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-
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- /**
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- * 选择本地图片
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- * 基于底部中间的按钮的点击事件
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- */
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- getImage() {
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- const _this = this
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- wx.chooseMedia({
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- count: 1,
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- mediaType: ['image'],
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- sourceType: ['album'],
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- success(res) {
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- _this.setData({
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- isShowImg: false,
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- filePath: res.tempFiles[0].tempFilePath,
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- })
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- _this.loadImage(_this.data.filePath)
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- },
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- })
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- },
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-
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- /**
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- * 初始化加载图片
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- */
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- loadImage(src) {
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- const _this = this
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-
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- wx.showLoading({
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- title: '图片加载中...',
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- })
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- wx.getImageInfo({
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- src: src ? src : this.properties.imageSrc,
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- success: function (res) {
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- /**
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- * 获取图片真实宽高
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- * 设置DRAW_IMAGE_W
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- */
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- _this.conf.DRAW_IMAGE_W = _this.conf.IMG_REAL_W = res.width
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- _this.conf.IMG_REAL_H = res.height
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- _this.conf.IMG_RATIO = Number((_this.conf.IMG_REAL_W / _this.conf.IMG_REAL_H).toFixed(5))
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- _this.conf.CROPPER_HEIGHT = Math.ceil(_this.properties.cropperWidth / _this.conf.IMG_RATIO)
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-
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- const scaleP = Number((_this.conf.IMG_REAL_W / _this.properties.cropperWidth).toFixed(5))
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- const qualityWidth = _this.conf.DRAW_IMAGE_W > _this.conf.MAX_QW ? _this.conf.MAX_QW : _this.conf.DRAW_IMAGE_W
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- // const MIN_RANG
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- const p = _this.initPosition()
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-
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- // 根据图片的宽高显示不同的效果 保证图片可以正常显示 (横屏)
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- console.log(_this.conf.IMG_RATIO)
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- console.log(_this.conf)
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- console.log(_this.drag)
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- console.log(_this.data)
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- console.log(p)
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- if (_this.conf.IMG_RATIO >= 1) {
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- _this.conf.CROPPER_WIDTH = _this.properties.cropperWidth
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- _this.setData({
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- cropperW: _this.properties.cropperWidth,
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- cropperH: _this.conf.CROPPER_HEIGHT,
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-
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- // 初始化left right
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- cutL: p.left,
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- cutT: p.top,
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- cutR: p.right,
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- cutB: p.bottom,
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-
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- // 图片缩放值
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- scaleP,
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- qualityWidth,
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- innerAspectRadio: _this.conf.IMG_RATIO,
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- filePath: res.path
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- })
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- } else {
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- // 竖屏初始化
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- _this.setData({
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- cropperW: _this.conf.CROPPER_WIDTH,
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- cropperH: _this.conf.CROPPER_HEIGHT,
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-
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- // 初始化left right
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- cutL: p.left,
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- cutT: p.top,
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- cutR: p.right,
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- cutB: p.bottom,
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-
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- // 图片缩放值
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- scaleP,
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- qualityWidth,
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- innerAspectRadio: _this.conf.IMG_RATIO,
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- filePath: res.path
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- })
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- }
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-
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- // 设置裁剪最小限制
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- _this.setMinCutInfo()
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-
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- _this.setData({
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- showImg: true
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- })
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-
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- wx.hideLoading()
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- }
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- })
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- },
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-
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- /**
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- * 点击完成裁剪图片并返回图片信息
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- * width 宽度
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- * height 高度
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- * url 图片的临时存储地址
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- */
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- getImageInfo() {
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- const _this = this
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- wx.showLoading({
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- title: '图片生成中...',
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- })
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- this.drag.IS_NO_DRAG = true
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- // 将图片写入画布
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- const ctx = wx.createCanvasContext('wxCropperCanvas', _this)
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- const w = this.data.qualityWidth
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- const h = Math.ceil(this.data.qualityWidth / this.data.innerAspectRadio)
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- ctx.drawImage(_this.data.filePath, 0, 0, w, h)
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- ctx.draw(true, () => {
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- // 获取画布要裁剪的位置和宽度 均为百分比 * 画布中图片的宽度 保证了在微信小程序中裁剪的图片模糊 位置不对的问题
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- const canvasW = Math.ceil(((_this.data.cropperW - _this.data.cutL - _this.data.cutR) / _this.data.cropperW) * w)
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- const canvasH = Math.ceil(((_this.data.cropperH - _this.data.cutT - _this.data.cutB) / _this.data.cropperH) * h)
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- const canvasL = Math.ceil((_this.data.cutL / _this.data.cropperW) * w)
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- const canvasT = Math.ceil((_this.data.cutT / _this.data.cropperH) * h)
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- // console.log(canvasW, canvasH, canvasL, canvasT)
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- // 生成图片
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- wx.canvasToTempFilePath({
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- x: canvasL,
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- y: canvasT,
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- width: canvasW,
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- height: canvasH,
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- destWidth: canvasW,
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- destHeight: canvasH,
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- quality: 0.9,
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- canvasId: 'wxCropperCanvas',
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- success: function (res) {
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- // console.log(res.tempFilePath)
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- const img = {
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- path: res.tempFilePath,
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- width: canvasW,
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- height: canvasH
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- }
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- _this.triggerEvent('close', img)
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- },
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- complete: function () {
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- // 结束之后可拖拽放大缩小
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- // 关闭loading
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- wx.hideLoading()
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- _this.drag.IS_NO_DRAG = false
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- }
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- }, _this)
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- })
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- },
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-
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- /**
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- * 设置最小裁剪宽度高度限制
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- */
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- setMinCutInfo() {
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- this.conf.CUT_MIN_W = this.properties.minCropperW
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- if (this.properties.cutRatio) {
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- this.conf.CUT_MIN_H = this.conf.CUT_MIN_W / this.properties.cutRatio
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- // console.log('this.conf.CUT_MIN_H', this.conf.CUT_MIN_H)
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- return
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- }
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- this.conf.CUT_MIN_H = this.conf.CUT_MIN_W
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- // console.log('this.conf.CUT_MIN_H', this.conf.CUT_MIN_H)
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|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 初始化裁剪位置
|
|
|
|
- * 需要 cutRatio 来判断
|
|
|
|
- * @return 返回裁剪的left, right, top bottom的值
|
|
|
|
- */
|
|
|
|
- initPosition() {
|
|
|
|
- // 定义返回的对象
|
|
|
|
- const left = 0,
|
|
|
|
- right = 0,
|
|
|
|
- top = 0,
|
|
|
|
- bottom = 0
|
|
|
|
- // cutRatio为0 且为横行 则为不等比裁剪
|
|
|
|
- if (this.properties.cutRatio === 0 && this.conf.IMG_RATIO >= 1) {
|
|
|
|
- return { left, right, top, bottom }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- // 如果图片宽度大于等于高度(横向)
|
|
|
|
- if (this.conf.IMG_RATIO >= 1) {
|
|
|
|
- // 获取基本宽度
|
|
|
|
- // 图片显示区域比裁剪比例大的时候
|
|
|
|
- if (this.conf.IMG_RATIO >= this.properties.cutRatio) {
|
|
|
|
- // left的值
|
|
|
|
- let leftRight = Math.ceil((this.properties.cropperWidth - (this.conf.CROPPER_HEIGHT * this.properties.cutRatio)) / 2)
|
|
|
|
- return {
|
|
|
|
- left: leftRight,
|
|
|
|
- right: leftRight,
|
|
|
|
- top: 0,
|
|
|
|
- bottom: 0
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- // 否则
|
|
|
|
- const bottomTop = Math.ceil((this.conf.CROPPER_HEIGHT - (this.properties.cropperWidth / this.properties.cutRatio)) / 2)
|
|
|
|
- return {
|
|
|
|
- left: 0,
|
|
|
|
- right: 0,
|
|
|
|
- top: bottomTop,
|
|
|
|
- bottom: bottomTop
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- // 如果图片宽度小于高度 (竖向)
|
|
|
|
- // const r = _this.properties.cropperRatio > _this.conf.IMG_RATIO ? _this.properties.cropperRatio : _this.conf.IMG_RATIO
|
|
|
|
- if (this.properties.cropperRatio > this.conf.IMG_RATIO) {
|
|
|
|
- this.conf.CROPPER_WIDTH = this.properties.cropperWidth / this.properties.cropperRatio * this.conf.IMG_RATIO
|
|
|
|
- this.conf.CROPPER_HEIGHT = this.properties.cropperWidth / this.properties.cropperRatio
|
|
|
|
- } else {
|
|
|
|
- this.conf.CROPPER_WIDTH = this.properties.cropperWidth
|
|
|
|
- this.conf.CROPPER_HEIGHT = this.properties.cropperWidth / this.conf.IMG_RATIO
|
|
|
|
- }
|
|
|
|
- // 定义四个位置 如果不比例裁剪
|
|
|
|
- if (this.properties.cutRatio === 0) return { left, right, top, bottom }
|
|
|
|
- // 否则
|
|
|
|
-
|
|
|
|
- if (this.conf.IMG_RATIO >= this.properties.cutRatio) {
|
|
|
|
- const leftRight = Math.ceil((this.conf.CROPPER_WIDTH - (this.conf.CROPPER_HEIGHT * this.properties.cutRatio)) / 2)
|
|
|
|
- return {
|
|
|
|
- left: leftRight,
|
|
|
|
- right: leftRight,
|
|
|
|
- top: 0,
|
|
|
|
- bottom: 0
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- const bottomTop = Math.ceil((this.conf.CROPPER_HEIGHT - (this.conf.CROPPER_WIDTH / this.properties.cutRatio)) / 2)
|
|
|
|
- return {
|
|
|
|
- left: 0,
|
|
|
|
- right: 0,
|
|
|
|
- top: bottomTop,
|
|
|
|
- bottom: bottomTop
|
|
|
|
- }
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 裁剪框的拖动事件
|
|
|
|
- */
|
|
|
|
- contentDragStart(e) {
|
|
|
|
- if (this.drag.IS_NO_DRAG) return
|
|
|
|
- this.drag.IS_TOUCH_CONTENT = true
|
|
|
|
-
|
|
|
|
- this.drag.TOUCH_OFFSET_X = (e.touches[0].pageX * this.conf.DRAG_MOVE_RATIO - this.data.cutL)
|
|
|
|
- this.drag.TOUCH_OFFSET_Y = (e.touches[0].pageY * this.conf.DRAG_MOVE_RATIO - this.data.cutT)
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 获取可移动的最大值 xy方向
|
|
|
|
- */
|
|
|
|
- const cc = this.cropperCurrentInfo()
|
|
|
|
- this.drag.TOUCH_MAX_MOVE_SECTION_X = cc.x
|
|
|
|
- this.drag.TOUCH_MAX_MOVE_SECTION_Y = cc.y
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 获取裁剪区域信息
|
|
|
|
- */
|
|
|
|
- cropperCurrentInfo() {
|
|
|
|
- const x = this.data.cutL + this.data.cutR
|
|
|
|
- const y = this.data.cutT + this.data.cutB
|
|
|
|
-
|
|
|
|
- // 获取拖拽元素的宽高
|
|
|
|
- this.drag.CUT_W = this.data.cropperW - x
|
|
|
|
- this.drag.CUT_H = this.data.cropperH - y
|
|
|
|
-
|
|
|
|
- // 返回x, y
|
|
|
|
- return {
|
|
|
|
- x,
|
|
|
|
- y
|
|
|
|
- }
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 裁剪框拖动
|
|
|
|
- */
|
|
|
|
- contentDragMove(e) {
|
|
|
|
- if (this.drag.IS_NO_DRAG) return
|
|
|
|
- if (!this.drag.IS_TOUCH_CONTENT) return
|
|
|
|
- const MOVE_X = e.touches[0].pageX * this.conf.DRAG_MOVE_RATIO - this.drag.TOUCH_OFFSET_X
|
|
|
|
- const MOVE_Y = e.touches[0].pageY * this.conf.DRAG_MOVE_RATIO - this.drag.TOUCH_OFFSET_Y
|
|
|
|
-
|
|
|
|
- const drag_x = Math.min(this.drag.TOUCH_MAX_MOVE_SECTION_X, Math.max(0, MOVE_X))
|
|
|
|
- const drag_y = Math.min(this.drag.TOUCH_MAX_MOVE_SECTION_Y, Math.max(0, MOVE_Y))
|
|
|
|
-
|
|
|
|
- this.setData({
|
|
|
|
- cutL: Math.ceil(drag_x),
|
|
|
|
- cutR: Math.ceil(this.data.cropperW - this.drag.CUT_W - drag_x),
|
|
|
|
- cutT: Math.ceil(drag_y),
|
|
|
|
- cutB: Math.ceil((this.data.cropperH - this.drag.CUT_H - drag_y))
|
|
|
|
- })
|
|
|
|
-
|
|
|
|
- // 需要初始化
|
|
|
|
- this.drag.TOUCH_OFFSET_X = (e.touches[0].pageX * this.conf.DRAG_MOVE_RATIO - this.data.cutL)
|
|
|
|
- this.drag.TOUCH_OFFSET_Y = (e.touches[0].pageY * this.conf.DRAG_MOVE_RATIO - this.data.cutT)
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 裁剪框拖动结束
|
|
|
|
- */
|
|
|
|
- contentTouchEnd() {
|
|
|
|
- this.drag.IS_TOUCH_CONTENT = false
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 裁剪框4个方向的拖拽
|
|
|
|
- */
|
|
|
|
- sideDragStart(e) {
|
|
|
|
- if (this.drag.IS_NO_DRAG) return
|
|
|
|
- this.drag.IS_TOUCH_SIDE = true
|
|
|
|
- this.drag.MOVE_PAGE_X = e.touches[0].pageX
|
|
|
|
- this.drag.MOVE_PAGE_Y = e.touches[0].pageY
|
|
|
|
-
|
|
|
|
- // 初始化设置
|
|
|
|
- this.conf.CUT_T = this.data.cutT
|
|
|
|
- this.conf.CUT_L = this.data.cutL
|
|
|
|
- this.conf.CUT_R = this.data.cutR
|
|
|
|
- this.conf.CUT_B = this.data.cutB
|
|
|
|
-
|
|
|
|
- // 初始化最大移动区域
|
|
|
|
- this.drag.SPACE_TOP_POSITION = this.conf.CROPPER_HEIGHT - this.conf.CUT_B - this.conf.CUT_MIN_H
|
|
|
|
- this.drag.SPACE_BOTTOM_POSITION = this.conf.CROPPER_HEIGHT - this.conf.CUT_T - this.conf.CUT_MIN_H
|
|
|
|
- this.drag.SPACE_RIGHT_POSITION = this.conf.CROPPER_WIDTH - this.conf.CUT_L - this.conf.CUT_MIN_W
|
|
|
|
- this.drag.SPACE_LEFT_POSITION = this.conf.CROPPER_WIDTH - this.conf.CUT_R - this.conf.CUT_MIN_W
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 拖拽中
|
|
|
|
- */
|
|
|
|
- sideDragMove(e) {
|
|
|
|
- if (this.drag.IS_NO_DRAG) return
|
|
|
|
- if (!this.drag.IS_TOUCH_SIDE) return
|
|
|
|
- const type = e.target.dataset.drag
|
|
|
|
- if (this.properties.cutRatio === 0) {
|
|
|
|
- this.sideDragMoveDefault(e, type)
|
|
|
|
- } else {
|
|
|
|
- this.sideDragMoveConst(e, type)
|
|
|
|
- }
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 拖拽结束
|
|
|
|
- */
|
|
|
|
- sideDragEnd() {
|
|
|
|
- this.drag.IS_TOUCH_SIDE = false
|
|
|
|
- // console.log('sideDragEnd')
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 开始拖拽
|
|
|
|
- * 等比例的拖拽方式
|
|
|
|
- */
|
|
|
|
- sideDragMoveConst(e, type) {
|
|
|
|
- const xLength = (e.touches[0].pageX - this.drag.MOVE_PAGE_X) * this.conf.DRAG_MOVE_RATIO
|
|
|
|
- const yLength = (e.touches[0].pageY - this.drag.MOVE_PAGE_Y) * this.conf.DRAG_MOVE_RATIO
|
|
|
|
- switch (type) {
|
|
|
|
- case 'top':
|
|
|
|
- let top = this.conf.CUT_T + yLength
|
|
|
|
- top = Math.ceil(top >= this.drag.SPACE_TOP_POSITION ? this.drag.SPACE_TOP_POSITION : top)
|
|
|
|
-
|
|
|
|
- let topL = this.conf.CUT_L + yLength * this.properties.cutRatio
|
|
|
|
- topL = Math.ceil(topL >= this.drag.SPACE_LEFT_POSITION ? this.drag.SPACE_LEFT_POSITION : topL)
|
|
|
|
-
|
|
|
|
- if (topL < 0) {
|
|
|
|
- if (this.data.cutT <= 0) return
|
|
|
|
- if (this.data.cutL >= 0) return
|
|
|
|
- this.setData({
|
|
|
|
- cutL: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (top <= 0) {
|
|
|
|
- this.setData({
|
|
|
|
- cutT: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- this.setData({
|
|
|
|
- cutT: top,
|
|
|
|
- cutL: topL
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'left':
|
|
|
|
- let left = this.conf.CUT_L + xLength
|
|
|
|
- left = Math.ceil(left >= this.drag.SPACE_LEFT_POSITION ? this.drag.SPACE_LEFT_POSITION : left)
|
|
|
|
-
|
|
|
|
- let leftB = this.conf.CUT_B + xLength / this.properties.cutRatio
|
|
|
|
- leftB = Math.ceil(leftB >= this.drag.SPACE_BOTTOM_POSITION ? this.drag.SPACE_BOTTOM_POSITION : leftB)
|
|
|
|
-
|
|
|
|
- // console.log(leftB)
|
|
|
|
- // console.log(left)
|
|
|
|
- if (leftB < 0) {
|
|
|
|
- if (this.data.cutL <= 0) return
|
|
|
|
- if (this.data.cutB >= 0) return
|
|
|
|
- this.setData({
|
|
|
|
- cutB: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (left <= 0) {
|
|
|
|
- this.setData({
|
|
|
|
- cutL: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- this.setData({
|
|
|
|
- cutL: left,
|
|
|
|
- cutB: leftB
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'bottom':
|
|
|
|
- let bottom = this.conf.CUT_B - yLength
|
|
|
|
- bottom = Math.ceil(bottom >= this.drag.SPACE_BOTTOM_POSITION ? this.drag.SPACE_BOTTOM_POSITION : bottom)
|
|
|
|
-
|
|
|
|
- let bottomR = this.conf.CUT_R - yLength * this.properties.cutRatio
|
|
|
|
- bottomR = Math.ceil(bottomR >= this.drag.SPACE_RIGHT_POSITION ? this.drag.SPACE_RIGHT_POSITION : bottomR)
|
|
|
|
-
|
|
|
|
- if (bottomR < 0) {
|
|
|
|
- if (this.data.cutB <= 0) return
|
|
|
|
- if (this.data.cutR >= 0) return
|
|
|
|
- this.setData({
|
|
|
|
- cutR: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (bottom <= 0) {
|
|
|
|
- this.setData({
|
|
|
|
- cutB: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- this.setData({
|
|
|
|
- cutR: bottomR,
|
|
|
|
- cutB: bottom
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'right':
|
|
|
|
- let right = this.conf.CUT_R - xLength
|
|
|
|
- right = Math.ceil(right >= this.drag.SPACE_RIGHT_POSITION ? this.drag.SPACE_RIGHT_POSITION : right)
|
|
|
|
-
|
|
|
|
- let rightT = this.conf.CUT_T - xLength / this.properties.cutRatio
|
|
|
|
- rightT = Math.ceil(rightT >= this.drag.SPACE_TOP_POSITION ? this.drag.SPACE_TOP_POSITION : rightT)
|
|
|
|
-
|
|
|
|
- if (rightT < 0) {
|
|
|
|
- if (this.data.cutR <= 0) return
|
|
|
|
- if (this.data.cutT >= 0) return
|
|
|
|
- this.setData({
|
|
|
|
- cutT: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (right <= 0) {
|
|
|
|
- this.setData({
|
|
|
|
- cutR: 0
|
|
|
|
- })
|
|
|
|
- return
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- this.setData({
|
|
|
|
- cutR: right,
|
|
|
|
- cutT: rightT
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- }
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- /**
|
|
|
|
- * 非等比例拖拽的操作
|
|
|
|
- */
|
|
|
|
- sideDragMoveDefault(e, type) {
|
|
|
|
- const xLength = (e.touches[0].pageX - this.drag.MOVE_PAGE_X) * this.conf.DRAG_MOVE_RATIO
|
|
|
|
- const yLength = (e.touches[0].pageY - this.drag.MOVE_PAGE_Y) * this.conf.DRAG_MOVE_RATIO
|
|
|
|
- switch (type) {
|
|
|
|
- case 'top':
|
|
|
|
- let top = this.conf.CUT_T + yLength
|
|
|
|
- top = top <= 0 ? 0 : top
|
|
|
|
- top = Math.ceil(top >= this.drag.SPACE_TOP_POSITION ? this.drag.SPACE_TOP_POSITION : top)
|
|
|
|
- this.setData({
|
|
|
|
- cutT: top
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'bottom':
|
|
|
|
- let bottom = this.conf.CUT_B - yLength
|
|
|
|
- bottom = bottom <= 0 ? 0 : bottom
|
|
|
|
- bottom = Math.ceil(bottom >= this.drag.SPACE_BOTTOM_POSITION ? this.drag.SPACE_BOTTOM_POSITION : bottom)
|
|
|
|
- this.setData({
|
|
|
|
- cutB: bottom
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'right':
|
|
|
|
- let right = this.conf.CUT_R - xLength
|
|
|
|
- right = right <= 0 ? 0 : right
|
|
|
|
- right = Math.ceil(right >= this.drag.SPACE_RIGHT_POSITION ? this.drag.SPACE_RIGHT_POSITION : right)
|
|
|
|
- this.setData({
|
|
|
|
- cutR: right
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'left':
|
|
|
|
- let left = this.conf.CUT_L + xLength
|
|
|
|
- left = left <= 0 ? 0 : left
|
|
|
|
- left = Math.ceil(left >= this.drag.SPACE_LEFT_POSITION ? this.drag.SPACE_LEFT_POSITION : left)
|
|
|
|
- this.setData({
|
|
|
|
- cutL: left
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- case 'rightBottom':
|
|
|
|
- let rightBottomR = this.conf.CUT_R - xLength
|
|
|
|
- rightBottomR = rightBottomR <= 0 ? 0 : rightBottomR
|
|
|
|
- rightBottomR = Math.ceil(rightBottomR >= this.drag.SPACE_RIGHT_POSITION ? this.drag.SPACE_RIGHT_POSITION : rightBottomR)
|
|
|
|
-
|
|
|
|
- let rightBottomB = this.conf.CUT_B - yLength
|
|
|
|
- rightBottomB = rightBottomB <= 0 ? 0 : rightBottomB
|
|
|
|
- rightBottomB = Math.ceil(rightBottomB >= this.drag.SPACE_BOTTOM_POSITION ? this.drag.SPACE_BOTTOM_POSITION : rightBottomB)
|
|
|
|
- this.setData({
|
|
|
|
- cutB: rightBottomB,
|
|
|
|
- cutR: rightBottomR
|
|
|
|
- })
|
|
|
|
- break
|
|
|
|
- default:
|
|
|
|
- break
|
|
|
|
- }
|
|
|
|
- },
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- created: function () {
|
|
|
|
- this.initStaticData()
|
|
|
|
- // console.log(this.drag)
|
|
|
|
- // console.log(this.conf)
|
|
|
|
- // console.log(this.data)
|
|
|
|
- // console.log(this.conf.DRAG_MOVE_RATIO)
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- attached: function () {
|
|
|
|
- // console.log('attached')
|
|
|
|
- this.loadImage()
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- ready: function () {
|
|
|
|
- // console.log('ready')
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- moved: function () {
|
|
|
|
- // console.log('moved')
|
|
|
|
- },
|
|
|
|
-
|
|
|
|
- detached: function () {
|
|
|
|
- // console.log('detached')
|
|
|
|
- }
|
|
|
|
-})
|
|
|