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This commit is contained in:
zoujiandong
+586
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"use strict";
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const common_vendor = require("../../../../common/vendor.js");
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const block0 = (Component2) => {
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if (!Component2.wxsCallMethods) {
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Component2.wxsCallMethods = [];
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}
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Component2.wxsCallMethods.push("dataChange");
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};
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const AREA_SIZE = 75;
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const IMG_SIZE = 300;
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const _sfc_main = {
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name: "qf-image-cropper",
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options: {
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// 表示启用样式隔离，在自定义组件内外，使用 class 指定的样式将不会相互影响
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styleIsolation: "isolated"
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},
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props: {
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/** 图片资源地址 */
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src: {
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type: String,
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default: ""
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},
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/** 裁剪宽度，有些平台或设备对于canvas的尺寸有限制，过大可能会导致无法正常绘制 */
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width: {
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type: Number,
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default: IMG_SIZE
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},
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/** 裁剪高度，有些平台或设备对于canvas的尺寸有限制，过大可能会导致无法正常绘制 */
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height: {
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type: Number,
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default: IMG_SIZE
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},
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/** 是否绘制裁剪区域边框 */
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showBorder: {
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type: Boolean,
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default: true
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},
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/** 是否绘制裁剪区域网格参考线 */
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showGrid: {
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type: Boolean,
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default: true
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},
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/** 是否展示四个支持伸缩的角 */
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showAngle: {
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type: Boolean,
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default: true
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},
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/** 裁剪区域最小缩放倍数 */
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areaScale: {
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type: Number,
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default: 0.3
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},
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/** 图片最小缩放倍数 */
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minScale: {
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type: Number,
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default: 1
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},
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/** 图片最大缩放倍数 */
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maxScale: {
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type: Number,
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default: 5
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},
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/** 检查图片位置是否超出裁剪边界，如果超出则会矫正位置 */
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checkRange: {
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type: Boolean,
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default: true
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},
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/** 生成图片背景色：如果裁剪区域没有完全包含在图片中时，不设置该属性生成图片存在一定的透明块 */
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backgroundColor: {
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type: String
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},
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/** 是否有回弹效果：当 checkRange 为 true 时有效，拖动时可以拖出边界，释放时会弹回边界 */
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bounce: {
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type: Boolean,
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default: true
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},
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/** 是否支持翻转 */
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rotatable: {
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type: Boolean,
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default: true
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},
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/** 是否支持逆向翻转 */
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reverseRotatable: {
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type: Boolean,
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default: false
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},
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/** 是否支持从本地选择素材 */
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choosable: {
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type: Boolean,
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default: true
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},
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/** 是否开启硬件加速，图片缩放过程中如果出现元素的“留影”或“重影”效果，可通过该方式解决或减轻这一问题 */
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gpu: {
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type: Boolean,
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default: false
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},
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/** 四个角尺寸，单位px */
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angleSize: {
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type: Number,
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default: 20
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},
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/** 四个角边框宽度，单位px */
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angleBorderWidth: {
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type: Number,
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default: 2
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},
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zIndex: {
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type: [Number, String]
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},
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/** 裁剪图片圆角半径，单位px */
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radius: {
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type: Number,
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default: 0
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},
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/** 生成文件的类型，只支持 'jpg' 或 'png'。默认为 'png' */
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fileType: {
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type: String,
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default: "png"
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},
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/**
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* 图片从绘制到生成所需时间，单位ms
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* 微信小程序平台使用 `Canvas 2D` 绘制时有效
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* 如绘制大图或出现裁剪图片空白等情况应适当调大该值，因 `Canvas 2d` 采用同步绘制，需自己把控绘制完成时间
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*/
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delay: {
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type: Number,
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default: 1e3
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}
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},
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emits: ["crop"],
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data() {
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return {
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// 用不同 id 使 v-for key 不重复
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maskList: [
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{ id: "crop-mask-block-1" },
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{ id: "crop-mask-block-2" },
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{ id: "crop-mask-block-3" },
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{ id: "crop-mask-block-4" }
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],
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gridList: [
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{ id: "crop-grid-1" },
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{ id: "crop-grid-2" },
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{ id: "crop-grid-3" },
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{ id: "crop-grid-4" }
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],
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angleList: [
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{ id: "crop-angle-1" },
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{ id: "crop-angle-2" },
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{ id: "crop-angle-3" },
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{ id: "crop-angle-4" }
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],
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/** 本地缓存的图片路径 */
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imgSrc: "",
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/** 图片的裁剪宽度 */
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imgWidth: IMG_SIZE,
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/** 图片的裁剪高度 */
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imgHeight: IMG_SIZE,
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/** 裁剪区域最大宽度所占屏幕宽度百分比 */
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widthPercent: AREA_SIZE,
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/** 裁剪区域最大高度所占屏幕宽度百分比 */
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heightPercent: AREA_SIZE,
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/** 裁剪区域布局信息 */
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area: {},
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/** 未被缩放过的图片宽 */
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oldWidth: 0,
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/** 未被缩放过的图片高 */
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oldHeight: 0,
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/** 系统信息 */
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sys: common_vendor.index.getSystemInfoSync(),
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scaleWidth: 0,
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scaleHeight: 0,
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rotate: 0,
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offsetX: 0,
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offsetY: 0,
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use2d: false,
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canvansWidth: 0,
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canvansHeight: 0
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// imageStyles: {},
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// maskStylesList: [{}, {}, {}, {}],
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// borderStyles: {},
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// gridStylesList: [{}, {}, {}, {}],
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// angleStylesList: [{}, {}, {}, {}],
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// circleBoxStyles: {},
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// circleStyles: {},
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};
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},
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computed: {
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initData() {
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return {
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timestamp: (/* @__PURE__ */ new Date()).getTime(),
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area: {
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...this.area,
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bounce: this.bounce,
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showBorder: this.showBorder,
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showGrid: this.showGrid,
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showAngle: this.showAngle,
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angleSize: this.angleSize,
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angleBorderWidth: this.angleBorderWidth,
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minScale: this.areaScale,
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widthPercent: this.widthPercent,
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heightPercent: this.heightPercent,
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radius: this.radius,
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checkRange: this.checkRange,
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zIndex: +this.zIndex || 0
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},
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sys: this.sys,
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img: {
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minScale: this.minScale,
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maxScale: this.maxScale,
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src: this.imgSrc,
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width: this.oldWidth,
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height: this.oldHeight,
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oldWidth: this.oldWidth,
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oldHeight: this.oldHeight,
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gpu: this.gpu
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}
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};
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},
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imgProps() {
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return {
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width: this.width,
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height: this.height,
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src: this.src
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};
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}
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},
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watch: {
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imgProps: {
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handler(val, oldVal) {
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this.imgWidth = Number(val.width) || IMG_SIZE;
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this.imgHeight = Number(val.height) || IMG_SIZE;
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let use2d = true;
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let canvansWidth = this.imgWidth;
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let canvansHeight = this.imgHeight;
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let size = Math.max(canvansWidth, canvansHeight);
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let scalc = 1;
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if (size > 1365) {
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scalc = 1365 / size;
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}
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this.canvansWidth = canvansWidth * scalc;
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this.canvansHeight = canvansHeight * scalc;
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this.use2d = use2d;
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this.initArea();
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const src = val.src || this.imgSrc;
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src && this.initImage(src, oldVal === void 0);
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},
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immediate: true
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}
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},
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methods: {
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/** 提供给wxs调用，用来接收图片变更数据 */
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dataChange(e) {
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this.scaleWidth = e.width;
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this.scaleHeight = e.height;
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this.rotate = e.rotate;
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this.offsetX = e.x;
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this.offsetY = e.y;
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},
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/** 初始化裁剪区域布局信息 */
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initArea() {
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this.sys.offsetBottom = common_vendor.index.upx2px(100) + this.sys.safeAreaInsets.bottom;
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this.sys.windowTop = 0;
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this.sys.navigation = true;
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let wp = this.widthPercent;
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let hp = this.heightPercent;
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if (this.imgWidth > this.imgHeight) {
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hp = hp * this.imgHeight / this.imgWidth;
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} else if (this.imgWidth < this.imgHeight) {
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wp = wp * this.imgWidth / this.imgHeight;
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}
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const size = this.sys.windowWidth > this.sys.windowHeight ? this.sys.windowHeight : this.sys.windowWidth;
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const width = size * wp / 100;
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const height = size * hp / 100;
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const left = (this.sys.windowWidth - width) / 2;
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const right = left + width;
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const top = (this.sys.windowHeight + this.sys.windowTop - this.sys.offsetBottom - height) / 2;
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const bottom = this.sys.windowHeight + this.sys.windowTop - this.sys.offsetBottom - top;
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this.area = { width, height, left, right, top, bottom };
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this.scaleWidth = width;
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this.scaleHeight = height;
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},
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/** 从本地选取图片 */
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chooseImage(options) {
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if (common_vendor.index.chooseMedia) {
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common_vendor.index.chooseMedia({
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...options,
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count: 1,
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mediaType: ["image"],
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success: (res) => {
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this.resetData();
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this.initImage(res.tempFiles[0].tempFilePath);
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}
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});
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return;
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}
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common_vendor.index.chooseImage({
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...options,
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count: 1,
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success: (res) => {
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this.resetData();
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this.initImage(res.tempFiles[0].path);
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}
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});
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},
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/** 重置数据 */
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resetData() {
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this.imgSrc = "";
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this.rotate = 0;
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this.offsetX = 0;
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this.offsetY = 0;
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this.initArea();
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},
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/**
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* 初始化图片信息
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* @param {String} url 图片链接
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*/
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initImage(url, isFirst) {
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common_vendor.index.getImageInfo({
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src: url,
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success: async (res) => {
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if (isFirst && this.src === url)
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await new Promise((resolve) => setTimeout(resolve, 50));
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this.imgSrc = res.path;
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let scale = res.width / res.height;
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let areaScale = this.area.width / this.area.height;
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if (scale > 1) {
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if (scale >= areaScale) {
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this.scaleWidth = this.scaleHeight / res.height * this.scaleWidth * (res.width / this.scaleWidth);
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} else {
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this.scaleHeight = res.height * this.scaleWidth / res.width;
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}
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} else {
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if (scale <= areaScale) {
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this.scaleHeight = this.scaleWidth / res.width * this.scaleHeight / (this.scaleHeight / res.height);
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} else {
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this.scaleWidth = res.width * this.scaleHeight / res.height;
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}
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}
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this.oldWidth = +this.scaleWidth.toFixed(2);
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this.oldHeight = +this.scaleHeight.toFixed(2);
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},
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fail: (err) => {
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common_vendor.index.__f__("error", "at uni_modules/qf-image-cropper/components/qf-image-cropper/qf-image-cropper.vue:438", err);
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}
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});
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},
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/**
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* 剪切图片圆角
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* @param {Object} ctx canvas 的绘图上下文对象
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* @param {Number} radius 圆角半径
|
||||
* @param {Number} scale 生成图片的实际尺寸与截取区域比
|
||||
* @param {Function} drawImage 执行剪切时所调用的绘图方法，入参为是否执行了剪切
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*/
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||||
drawClipImage(ctx, radius, scale, drawImage) {
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if (radius > 0) {
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ctx.save();
|
||||
ctx.beginPath();
|
||||
const w = this.canvansWidth;
|
||||
const h = this.canvansHeight;
|
||||
if (w === h && radius >= w / 2) {
|
||||
ctx.arc(w / 2, h / 2, w / 2, 0, 2 * Math.PI);
|
||||
} else {
|
||||
if (w !== h) {
|
||||
radius = Math.min(w / 2, h / 2, radius);
|
||||
}
|
||||
ctx.moveTo(radius, 0);
|
||||
ctx.arcTo(w, 0, w, h, radius);
|
||||
ctx.arcTo(w, h, 0, h, radius);
|
||||
ctx.arcTo(0, h, 0, 0, radius);
|
||||
ctx.arcTo(0, 0, w, 0, radius);
|
||||
ctx.closePath();
|
||||
}
|
||||
ctx.clip();
|
||||
drawImage && drawImage(true);
|
||||
ctx.restore();
|
||||
} else {
|
||||
drawImage && drawImage(false);
|
||||
}
|
||||
},
|
||||
/**
|
||||
* 旋转图片
|
||||
* @param {Object} ctx canvas 的绘图上下文对象
|
||||
* @param {Number} rotate 旋转角度
|
||||
* @param {Number} scale 生成图片的实际尺寸与截取区域比
|
||||
*/
|
||||
drawRotateImage(ctx, rotate, scale) {
|
||||
if (rotate !== 0) {
|
||||
const x = this.scaleWidth * scale / 2;
|
||||
const y = this.scaleHeight * scale / 2;
|
||||
ctx.translate(x, y);
|
||||
ctx.rotate(rotate * Math.PI / 180);
|
||||
ctx.translate(-x, -y);
|
||||
}
|
||||
},
|
||||
drawImage(ctx, image, callback) {
|
||||
const scale = this.canvansWidth / this.area.width;
|
||||
if (this.backgroundColor) {
|
||||
if (ctx.setFillStyle)
|
||||
ctx.setFillStyle(this.backgroundColor);
|
||||
else
|
||||
ctx.fillStyle = this.backgroundColor;
|
||||
ctx.fillRect(0, 0, this.canvansWidth, this.canvansHeight);
|
||||
}
|
||||
this.drawClipImage(ctx, this.radius, scale, () => {
|
||||
this.drawRotateImage(ctx, this.rotate, scale);
|
||||
const r = this.rotate / 90;
|
||||
ctx.drawImage(
|
||||
image,
|
||||
[
|
||||
this.offsetX - this.area.left,
|
||||
this.offsetY - this.area.top,
|
||||
-(this.offsetX - this.area.left),
|
||||
-(this.offsetY - this.area.top)
|
||||
][r] * scale,
|
||||
[
|
||||
this.offsetY - this.area.top,
|
||||
-(this.offsetX - this.area.left),
|
||||
-(this.offsetY - this.area.top),
|
||||
this.offsetX - this.area.left
|
||||
][r] * scale,
|
||||
this.scaleWidth * scale,
|
||||
this.scaleHeight * scale
|
||||
);
|
||||
});
|
||||
},
|
||||
/**
|
||||
* 绘图
|
||||
* @param {Object} canvas
|
||||
* @param {Object} ctx canvas 的绘图上下文对象
|
||||
* @param {String} src 图片路径
|
||||
* @param {Function} callback 开始绘制时回调
|
||||
*/
|
||||
draw2DImage(canvas, ctx, src, callback) {
|
||||
if (canvas) {
|
||||
const image = canvas.createImage();
|
||||
image.onload = () => {
|
||||
this.drawImage(ctx, image);
|
||||
callback && setTimeout(callback, this.delay);
|
||||
};
|
||||
image.onerror = (err) => {
|
||||
common_vendor.index.__f__("error", "at uni_modules/qf-image-cropper/components/qf-image-cropper/qf-image-cropper.vue:541", err);
|
||||
common_vendor.index.hideLoading();
|
||||
};
|
||||
image.src = src;
|
||||
} else {
|
||||
this.drawImage(ctx, src);
|
||||
setTimeout(() => {
|
||||
ctx.draw(false, callback);
|
||||
}, 200);
|
||||
}
|
||||
},
|
||||
/**
|
||||
* 画布转图片到本地缓存
|
||||
* @param {Object} canvas
|
||||
* @param {String} canvasId
|
||||
*/
|
||||
canvasToTempFilePath(canvas, canvasId) {
|
||||
common_vendor.index.canvasToTempFilePath({
|
||||
canvas,
|
||||
canvasId,
|
||||
x: 0,
|
||||
y: 0,
|
||||
width: this.canvansWidth,
|
||||
height: this.canvansHeight,
|
||||
destWidth: this.imgWidth,
|
||||
// 必要，保证生成图片宽度不受设备分辨率影响
|
||||
destHeight: this.imgHeight,
|
||||
// 必要，保证生成图片高度不受设备分辨率影响
|
||||
fileType: this.fileType,
|
||||
// 目标文件的类型，默认png
|
||||
success: (res) => {
|
||||
this.handleImage(res.tempFilePath);
|
||||
},
|
||||
fail: (err) => {
|
||||
common_vendor.index.hideLoading();
|
||||
common_vendor.index.showToast({ title: "裁剪失败，生成图片异常！", icon: "none" });
|
||||
}
|
||||
}, this);
|
||||
},
|
||||
cropCancel() {
|
||||
this.$emit("cancel");
|
||||
},
|
||||
/** 确认裁剪 */
|
||||
cropClick() {
|
||||
common_vendor.index.showLoading({ title: "裁剪中...", mask: true });
|
||||
if (!this.use2d) {
|
||||
const ctx = common_vendor.index.createCanvasContext("imgCanvas", this);
|
||||
ctx.clearRect(0, 0, this.canvansWidth, this.canvansHeight);
|
||||
this.draw2DImage(null, ctx, this.imgSrc, () => {
|
||||
this.canvasToTempFilePath(null, "imgCanvas");
|
||||
});
|
||||
return;
|
||||
}
|
||||
const query = common_vendor.index.createSelectorQuery().in(this);
|
||||
query.select("#imgCanvas").fields({ node: true, size: true }).exec((res) => {
|
||||
const canvas = res[0].node;
|
||||
const dpr = common_vendor.index.getSystemInfoSync().pixelRatio;
|
||||
canvas.width = res[0].width * dpr;
|
||||
canvas.height = res[0].height * dpr;
|
||||
const ctx = canvas.getContext("2d");
|
||||
ctx.scale(dpr, dpr);
|
||||
ctx.clearRect(0, 0, this.canvansWidth, this.canvansHeight);
|
||||
this.draw2DImage(canvas, ctx, this.imgSrc, () => {
|
||||
this.canvasToTempFilePath(canvas);
|
||||
});
|
||||
});
|
||||
},
|
||||
handleImage(tempFilePath) {
|
||||
common_vendor.index.hideLoading();
|
||||
this.$emit("crop", { tempFilePath });
|
||||
}
|
||||
}
|
||||
};
|
||||
function _sfc_render(_ctx, _cache, $props, $setup, $data, $options) {
|
||||
return common_vendor.e({
|
||||
a: $data.use2d
|
||||
}, $data.use2d ? {
|
||||
b: `${$data.canvansWidth}px`,
|
||||
c: `${$data.canvansHeight}px`
|
||||
} : {
|
||||
d: `${$data.canvansWidth}px`,
|
||||
e: `${$data.canvansHeight}px`
|
||||
}, {
|
||||
f: $data.imgSrc
|
||||
}, $data.imgSrc ? {
|
||||
g: $data.imgSrc
|
||||
} : {}, {
|
||||
h: common_vendor.f($data.maskList, (item, index, i0) => {
|
||||
return {
|
||||
a: item.id,
|
||||
b: item.id
|
||||
};
|
||||
}),
|
||||
i: $props.showBorder
|
||||
}, $props.showBorder ? {} : {}, {
|
||||
j: $props.radius > 0
|
||||
}, $props.radius > 0 ? {} : {}, {
|
||||
k: $props.showGrid
|
||||
}, $props.showGrid ? {
|
||||
l: common_vendor.f($data.gridList, (item, index, i0) => {
|
||||
return {
|
||||
a: item.id,
|
||||
b: item.id
|
||||
};
|
||||
})
|
||||
} : {}, {
|
||||
m: $props.showAngle
|
||||
}, $props.showAngle ? {
|
||||
n: common_vendor.f($data.angleList, (item, index, i0) => {
|
||||
return {
|
||||
a: item.id,
|
||||
b: item.id
|
||||
};
|
||||
}),
|
||||
o: common_vendor.s({
|
||||
width: `${$props.angleSize}px`,
|
||||
height: `${$props.angleSize}px`
|
||||
})
|
||||
} : {}, {
|
||||
p: $options.initData,
|
||||
q: ($props.rotatable || $props.reverseRotatable) && !!$data.imgSrc
|
||||
}, ($props.rotatable || $props.reverseRotatable) && !!$data.imgSrc ? common_vendor.e({
|
||||
r: $props.reverseRotatable
|
||||
}, $props.reverseRotatable ? {} : {}, {
|
||||
s: $props.rotatable
|
||||
}, $props.rotatable ? {} : {}) : {}, {
|
||||
t: !$props.choosable
|
||||
}, !$props.choosable ? {
|
||||
v: common_vendor.o((...args) => $options.cropClick && $options.cropClick(...args))
|
||||
} : !!$data.imgSrc ? {
|
||||
x: common_vendor.o((...args) => $options.chooseImage && $options.chooseImage(...args)),
|
||||
y: common_vendor.o((...args) => $options.cropCancel && $options.cropCancel(...args)),
|
||||
z: common_vendor.o((...args) => $options.cropClick && $options.cropClick(...args))
|
||||
} : {
|
||||
A: common_vendor.o((...args) => $options.chooseImage && $options.chooseImage(...args))
|
||||
}, {
|
||||
w: !!$data.imgSrc,
|
||||
B: $options.initData.area.zIndex + 99,
|
||||
C: $props.zIndex
|
||||
});
|
||||
}
|
||||
if (typeof block0 === "function")
|
||||
block0(_sfc_main);
|
||||
const Component = /* @__PURE__ */ common_vendor._export_sfc(_sfc_main, [["render", _sfc_render], ["__scopeId", "data-v-7129956f"]]);
|
||||
wx.createComponent(Component);
|
||||
//# sourceMappingURL=../../../../../.sourcemap/mp-weixin/uni_modules/qf-image-cropper/components/qf-image-cropper/qf-image-cropper.js.map
|
||||
+4
@@ -0,0 +1,4 @@
|
||||
{
|
||||
"component": true,
|
||||
"usingComponents": {}
|
||||
}
|
||||
+730
@@ -0,0 +1,730 @@
|
||||
<wxs module="cropper">
|
||||
/**
|
||||
* 图片编辑器-手势监听
|
||||
* 1. wxs 暂不支持 es6 语法
|
||||
* 2. 支持编译到微信小程序、QQ小程序、app-vue、H5上（uni-app 2.2.5及以上版本）
|
||||
*/
|
||||
/** 图片偏移量 */
|
||||
var offset = { x: 0, y: 0 };
|
||||
/** 图片缩放比例 */
|
||||
var scale = 1;
|
||||
/** 图片最小缩放比例 */
|
||||
var minScale = 1;
|
||||
/** 图片旋转角度 */
|
||||
var rotate = 0;
|
||||
/** 触摸点 */
|
||||
var touches = [];
|
||||
/** 图片布局信息 */
|
||||
var img = {};
|
||||
/** 系统信息 */
|
||||
var sys = {};
|
||||
/** 裁剪区域布局信息 */
|
||||
var area = {};
|
||||
/** 触摸行为类型 */
|
||||
var touchType = '';
|
||||
/** 操作角的位置 */
|
||||
var activeAngle = 0;
|
||||
/** 裁剪区域布局信息偏移量 */
|
||||
var areaOffset = { left: 0, right: 0, top: 0, bottom: 0 };
|
||||
/** 容错值 */
|
||||
var fault = 0.000001;
|
||||
/**
|
||||
* 获取a、b两数中的最小正数
|
||||
* @param a
|
||||
* @param b
|
||||
*/
|
||||
function minimum(a, b) {
|
||||
if (a > 0 && b < 0) return a;
|
||||
if (a < 0 && b > 0) return b;
|
||||
if (a > 0 && b > 0) return Math.min(a, b);
|
||||
return 0;
|
||||
}
|
||||
/**
|
||||
* 在容错访问内获取n近似值
|
||||
* @param n
|
||||
*/
|
||||
function num(n) {
|
||||
var m = parseFloat((n).toFixed(6));
|
||||
return m === fault || m === -fault ? 0 : m;
|
||||
}
|
||||
/**
|
||||
* 比较a值在容错值范围内是否等于b值
|
||||
* @param a
|
||||
* @param b
|
||||
*/
|
||||
function equalsByFault(a, b) {
|
||||
return Math.abs(a - b) <= fault;
|
||||
}
|
||||
/**
|
||||
* 比较a值在容错值范围内是否小于b值
|
||||
* @param a
|
||||
* @param b
|
||||
*/
|
||||
function lessThanByFault(a, b) {
|
||||
var c = a - b;
|
||||
return c < 0 ? c < -fault : c < fault;
|
||||
}
|
||||
/**
|
||||
* 验证并获取有效最大值
|
||||
* @param v
|
||||
* @param max
|
||||
* @param isInclude
|
||||
* @param x
|
||||
* @param y
|
||||
* @param rate
|
||||
* @returns
|
||||
*/
|
||||
function validMax(v, max, isInclude, x, y, rate) {
|
||||
if(typeof max === 'number') {
|
||||
if(isInclude && equalsByFault(max, y)) { // 宽高不等时，x轴用y轴值要做等比例转换
|
||||
var n = num(max * rate);
|
||||
if (n <= x) return n; // 转化后值在x轴最大值范围内
|
||||
return x; // 转化后值超出x轴最大值范围则用最大值
|
||||
}
|
||||
return max;
|
||||
}
|
||||
return v;
|
||||
}
|
||||
/**
|
||||
* 计算两点间距
|
||||
* @param {Object} touches 触摸点信息
|
||||
*/
|
||||
function getDistanceByTouches(touches) {
|
||||
// 根据勾股定理求两点间距离
|
||||
var a = touches[1].pageX - touches[0].pageX;
|
||||
var b = touches[1].pageY - touches[0].pageY;
|
||||
var c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
|
||||
// 求两点间的中点坐标
|
||||
// 1. a、b可能为负值
|
||||
// 2. 在求a、b时，如用touches[1]减touches[0]，则求中点坐标也得用touches[1]减a/2、b/2
|
||||
// 3. 同理，在求a、b时，也可用touches[0]减touches[1]，则求中点坐标也得用touches[0]减a/2、b/2
|
||||
var x = touches[1].pageX - a / 2;
|
||||
var y = touches[1].pageY - b / 2;
|
||||
return { c, x, y };
|
||||
};
|
||||
/**
|
||||
* 修正取值
|
||||
* @param {Object} a
|
||||
* @param {Object} b
|
||||
* @param {Object} c
|
||||
* @param {Object} reverse 是否反向
|
||||
*/
|
||||
function correctValue(a, b, c, reverse) {
|
||||
return num(reverse ? Math.max(Math.min(a, b), c) : Math.min(Math.max(a, b), c));
|
||||
}
|
||||
|
||||
/**
|
||||
* 旋转90°或270°时检查边界：限制 x、y 拖动范围，禁止滑出边界
|
||||
* @param {Object} e 点坐标
|
||||
* @param {Object} xReverse x是否反向
|
||||
* @param {Object} yReverse y是否反向
|
||||
*/
|
||||
function checkRotateRange(e, xReverse, yReverse) {
|
||||
var o = num((img.height - img.width) / 2); // 宽高差值一半
|
||||
return {
|
||||
x: correctValue(e.x, -img.height + o + area.width + area.left, area.left + o, xReverse),
|
||||
y: correctValue(e.y, -img.width - o + area.height + area.top, area.top - o, yReverse)
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* 检查边界：限制 x、y 拖动范围，禁止滑出边界
|
||||
* @param {Object} e 点坐标
|
||||
*/
|
||||
function checkRange(e) {
|
||||
var r = rotate / 90 % 2;
|
||||
if(r === 1) { // 因图片宽高可能不等，翻转 90° 或 270° 后图片宽高需反着计算，且左右和上下边界要根据差值做偏移
|
||||
if (area.width === area.height) {
|
||||
return checkRotateRange(e, img.height < area.height, img.width < area.width);
|
||||
}
|
||||
var isInclude = img.height < area.width && img.width < area.height; // 图片是否包含在裁剪区域内
|
||||
if (img.width < area.height || img.height < area.width) {
|
||||
if (area.width < area.height && img.width < img.height) {
|
||||
return isInclude
|
||||
? checkRotateRange(e, area.width < area.height, area.width < area.height)
|
||||
: checkRotateRange(e, false, true);
|
||||
}
|
||||
if (area.height < area.width && img.height < img.width) {
|
||||
return isInclude
|
||||
? checkRotateRange(e, area.height < area.width, area.height < area.width)
|
||||
: checkRotateRange(e, true, false);
|
||||
}
|
||||
}
|
||||
if (img.height >= area.width && img.width >= area.height) {
|
||||
return checkRotateRange(e, false, false);
|
||||
}
|
||||
if (isInclude) {
|
||||
return area.height < area.width
|
||||
? checkRotateRange(e, true, true)
|
||||
: checkRotateRange(e, area.width < area.height, area.width < area.height);
|
||||
}
|
||||
if (img.height < area.width && !img.width < area.height) {
|
||||
return checkRotateRange(e, true, false);
|
||||
}
|
||||
if (!img.height < area.width && img.width < area.height) {
|
||||
return checkRotateRange(e, false, true);
|
||||
}
|
||||
return checkRotateRange(e, img.height < area.height, img.width < area.width);
|
||||
}
|
||||
return {
|
||||
x: correctValue(e.x, -img.width + area.width + area.left, area.left, img.width < area.width),
|
||||
y: correctValue(e.y, -img.height + area.height + area.top, area.top, img.height < area.height)
|
||||
};
|
||||
};
|
||||
/**
|
||||
* 变更图片布局信息
|
||||
* @param {Object} e 布局信息
|
||||
*/
|
||||
function changeImageRect(e) {
|
||||
offset.x += e.x || 0;
|
||||
offset.y += e.y || 0;
|
||||
var image = e.instance.selectComponent('.crop-image');
|
||||
if(e.check && area.checkRange) { // 检查边界
|
||||
var point = checkRange(offset);
|
||||
if(offset.x !== point.x || offset.y !== point.y) {
|
||||
offset = point;
|
||||
}
|
||||
}
|
||||
// image.setStyle({
|
||||
// width: img.width + 'px',
|
||||
// height: img.height + 'px',
|
||||
// transform: 'translate(' + offset.x + 'px, ' + offset.y + 'px) rotate(' + rotate +'deg)'
|
||||
// });
|
||||
var ox = (img.width - img.oldWidth) / 2;
|
||||
var oy = (img.height - img.oldHeight) / 2;
|
||||
image.setStyle({
|
||||
width: img.oldWidth + 'px',
|
||||
height: img.oldHeight + 'px',
|
||||
transform: (img.gpu ? 'translateZ(0) ' : '') + 'translate(' + (offset.x + ox) + 'px, ' + (offset.y + oy) + 'px) rotate(' + rotate +'deg) scale(' + scale + ')'
|
||||
});
|
||||
|
||||
e.instance.callMethod('dataChange', {
|
||||
width: img.width,
|
||||
height: img.height,
|
||||
x: offset.x,
|
||||
y: offset.y,
|
||||
rotate: rotate
|
||||
});
|
||||
};
|
||||
/**
|
||||
* 变更裁剪区域布局信息
|
||||
* @param {Object} e 布局信息
|
||||
*/
|
||||
function changeAreaRect(e) {
|
||||
// 变更蒙版样式
|
||||
var masks = e.instance.selectAllComponents('.crop-mask-block');
|
||||
var maskStyles = [
|
||||
{
|
||||
left: 0,
|
||||
width: (area.left + areaOffset.left) + 'px',
|
||||
top: 0,
|
||||
bottom: 0,
|
||||
'z-index': area.zIndex + 2
|
||||
},
|
||||
{
|
||||
left: (area.right + areaOffset.right) + 'px',
|
||||
right: 0,
|
||||
top: 0,
|
||||
bottom: 0,
|
||||
'z-index': area.zIndex + 2
|
||||
},
|
||||
{
|
||||
left: (area.left + areaOffset.left) + 'px',
|
||||
width: (area.width + areaOffset.right - areaOffset.left) + 'px',
|
||||
top: 0,
|
||||
height: (area.top + areaOffset.top) + 'px',
|
||||
'z-index': area.zIndex + 2
|
||||
},
|
||||
{
|
||||
left: (area.left + areaOffset.left) + 'px',
|
||||
width: (area.width + areaOffset.right - areaOffset.left) + 'px',
|
||||
top: (area.bottom + areaOffset.bottom) + 'px',
|
||||
// height: (area.top - areaOffset.bottom + sys.offsetBottom) + 'px',
|
||||
bottom: 0,
|
||||
'z-index': area.zIndex + 2
|
||||
}
|
||||
];
|
||||
var len = masks.length;
|
||||
for (var i = 0; i < len; i++) {
|
||||
masks[i].setStyle(maskStyles[i]);
|
||||
}
|
||||
|
||||
// 变更边框样式
|
||||
if(area.showBorder) {
|
||||
var border = e.instance.selectComponent('.crop-border');
|
||||
border.setStyle({
|
||||
left: (area.left + areaOffset.left) + 'px',
|
||||
top: (area.top + areaOffset.top) + 'px',
|
||||
width: (area.width + areaOffset.right - areaOffset.left) + 'px',
|
||||
height: (area.height + areaOffset.bottom - areaOffset.top) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
});
|
||||
}
|
||||
|
||||
// 变更参考线样式
|
||||
if(area.showGrid) {
|
||||
var grids = e.instance.selectAllComponents('.crop-grid');
|
||||
var gridStyles = [
|
||||
{
|
||||
'border-width': '1px 0 0 0',
|
||||
left: (area.left + areaOffset.left) + 'px',
|
||||
right: (area.right + areaOffset.right) + 'px',
|
||||
top: (area.top + areaOffset.top + (area.height + areaOffset.bottom - areaOffset.top) / 3 - 0.5) + 'px',
|
||||
width: (area.width + areaOffset.right - areaOffset.left) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
},
|
||||
{
|
||||
'border-width': '1px 0 0 0',
|
||||
left: (area.left + areaOffset.left) + 'px',
|
||||
right: (area.right + areaOffset.right) + 'px',
|
||||
top: (area.top + areaOffset.top + (area.height + areaOffset.bottom - areaOffset.top) * 2 / 3 - 0.5) + 'px',
|
||||
width: (area.width + areaOffset.right - areaOffset.left) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
},
|
||||
{
|
||||
'border-width': '0 1px 0 0',
|
||||
top: (area.top + areaOffset.top) + 'px',
|
||||
bottom: (area.bottom + areaOffset.bottom) + 'px',
|
||||
left: (area.left + areaOffset.left + (area.width + areaOffset.right - areaOffset.left) / 3 - 0.5) + 'px',
|
||||
height: (area.height + areaOffset.bottom - areaOffset.top) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
},
|
||||
{
|
||||
'border-width': '0 1px 0 0',
|
||||
top: (area.top + areaOffset.top) + 'px',
|
||||
bottom: (area.bottom + areaOffset.bottom) + 'px',
|
||||
left: (area.left + areaOffset.left + (area.width + areaOffset.right - areaOffset.left) * 2 / 3 - 0.5) + 'px',
|
||||
height: (area.height + areaOffset.bottom - areaOffset.top) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
}
|
||||
];
|
||||
var len = grids.length;
|
||||
for (var i = 0; i < len; i++) {
|
||||
grids[i].setStyle(gridStyles[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// 变更四个伸缩角样式
|
||||
if(area.showAngle) {
|
||||
var angles = e.instance.selectAllComponents('.crop-angle');
|
||||
var angleStyles = [
|
||||
{
|
||||
'border-width': area.angleBorderWidth + 'px 0 0 ' + area.angleBorderWidth + 'px',
|
||||
left: (area.left + areaOffset.left - area.angleBorderWidth) + 'px',
|
||||
top: (area.top + areaOffset.top - area.angleBorderWidth) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
},
|
||||
{
|
||||
'border-width': area.angleBorderWidth + 'px ' + area.angleBorderWidth + 'px 0 0',
|
||||
left: (area.right + areaOffset.right - area.angleSize) + 'px',
|
||||
top: (area.top + areaOffset.top - area.angleBorderWidth) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
},
|
||||
{
|
||||
'border-width': '0 0 ' + area.angleBorderWidth + 'px ' + area.angleBorderWidth + 'px',
|
||||
left: (area.left + areaOffset.left - area.angleBorderWidth) + 'px',
|
||||
top: (area.bottom + areaOffset.bottom - area.angleSize) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
},
|
||||
{
|
||||
'border-width': '0 ' + area.angleBorderWidth + 'px ' + area.angleBorderWidth + 'px 0',
|
||||
left: (area.right + areaOffset.right - area.angleSize) + 'px',
|
||||
top: (area.bottom + areaOffset.bottom - area.angleSize) + 'px',
|
||||
'z-index': area.zIndex + 3
|
||||
}
|
||||
];
|
||||
var len = angles.length;
|
||||
for (var i = 0; i < len; i++) {
|
||||
angles[i].setStyle(angleStyles[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// 变更圆角样式
|
||||
if(area.radius > 0) {
|
||||
var circleBox = e.instance.selectComponent('.crop-circle-box');
|
||||
var circle = e.instance.selectComponent('.crop-circle');
|
||||
var radius = area.radius;
|
||||
if(area.width === area.height && area.radius >= area.width / 2) { // 圆形
|
||||
radius = (area.width / 2);
|
||||
} else { // 圆角矩形
|
||||
if(area.width !== area.height) { // 限制圆角半径不能超过短边的一半
|
||||
radius = Math.min(area.width / 2, area.height / 2, radius);
|
||||
}
|
||||
}
|
||||
circleBox.setStyle({
|
||||
left: (area.left + areaOffset.left) + 'px',
|
||||
top: (area.top + areaOffset.top) + 'px',
|
||||
width: (area.width + areaOffset.right - areaOffset.left) + 'px',
|
||||
height: (area.height + areaOffset.bottom - areaOffset.top) + 'px',
|
||||
'z-index': area.zIndex + 2
|
||||
});
|
||||
circle.setStyle({
|
||||
'box-shadow': '0 0 0 ' + Math.max(area.width, area.height) + 'px rgba(51, 51, 51, 0.8)',
|
||||
'border-radius': radius + 'px'
|
||||
});
|
||||
}
|
||||
};
|
||||
/**
|
||||
* 缩放图片
|
||||
* @param {Object} e 布局信息
|
||||
*/
|
||||
function scaleImage(e) {
|
||||
var last = scale;
|
||||
scale = Math.min(Math.max(e.scale + scale, minScale), img.maxScale);
|
||||
if(last !== scale) {
|
||||
img.width = num(img.oldWidth * scale);
|
||||
img.height = num(img.oldHeight * scale);
|
||||
// 参考问题：有一个长4000px、宽4000px的四方形ABCD，A点的坐标固定在(-2000,-2000)，
|
||||
// 该四边形上有一个点E，坐标为(-100,-300)，将该四方形复制一份并缩小到90%后，
|
||||
// 新四边形的A点坐标为多少时可使新四边形的E点与原四边形的E点重合？
|
||||
// 预期效果：从图中选取某点（参照物）为中心点进行缩放，缩放时无论图像怎么变化，该点位置始终固定不变
|
||||
// 计算方法：以相同起点先计算缩放前后两点间的距离，再加上原图像偏移量即可
|
||||
e.x = num((e.x - offset.x) * (1 - scale / last));
|
||||
e.y = num((e.y - offset.y) * (1 - scale / last));
|
||||
changeImageRect(e);
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
};
|
||||
/**
|
||||
* 获取触摸点在哪个角
|
||||
* @param {number} x 触摸点x轴坐标
|
||||
* @param {number} y 触摸点y轴坐标
|
||||
* @return {number} 角的位置：0=无；1=左上；2=右上；3=左下；4=右下；
|
||||
*/
|
||||
function getToucheAngle(x, y) {
|
||||
// console.log('getToucheAngle', x, y, JSON.stringify(area))
|
||||
var o = area.angleBorderWidth; // 需扩大触发范围则把 o 值加大即可
|
||||
if(y >= area.top - o && y <= area.top + area.angleSize + o) {
|
||||
if(x >= area.left - o && x <= area.left + area.angleSize + o) {
|
||||
return 1; // 左上角
|
||||
} else if(x >= area.right - area.angleSize - o && x <= area.right + o) {
|
||||
return 2; // 右上角
|
||||
}
|
||||
} else if(y >= area.bottom - area.angleSize - o && y <= area.bottom + o) {
|
||||
if(x >= area.left - o && x <= area.left + area.angleSize + o) {
|
||||
return 3; // 左下角
|
||||
} else if(x >= area.right - area.angleSize - o && x <= area.right + o) {
|
||||
return 4; // 右下角
|
||||
}
|
||||
}
|
||||
return 0; // 无触摸到角
|
||||
};
|
||||
/**
|
||||
* 重置数据
|
||||
*/
|
||||
function resetData() {
|
||||
offset = { x: 0, y: 0 };
|
||||
scale = 1;
|
||||
minScale = img.minScale;
|
||||
rotate = 0;
|
||||
};
|
||||
/**
|
||||
* 顺时针翻转图片90°
|
||||
* @param {Object} e 事件对象
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
function rotateImage(e, o, r) {
|
||||
rotate = (rotate + r) % 360;
|
||||
if(img.minScale >= 1 && area.checkRange) {
|
||||
// 因图片宽高可能不等，翻转后图片宽高需足够填满裁剪区域
|
||||
minScale = 1;
|
||||
if(img.width < area.height) {
|
||||
minScale = area.height / img.oldWidth;
|
||||
} else if(img.height < area.width) {
|
||||
minScale = area.width / img.oldHeight;
|
||||
}
|
||||
if(minScale !== 1) {
|
||||
scaleImage({
|
||||
instance: o,
|
||||
scale: minScale - scale,
|
||||
x: sys.windowWidth / 2,
|
||||
y: (sys.windowHeight - sys.offsetBottom) / 2
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
// 由于拖动画布后会导致图片位置偏移，翻转时的旋转中心点需是图片区域+偏移区域的中心点
|
||||
// 翻转x轴中心点 = (超出裁剪区域右侧的图片宽度 - 超出裁剪区域左侧的图片宽度) / 2
|
||||
// 翻转y轴中心点 = (超出裁剪区域下方的图片宽度 - 超出裁剪区域上方的图片宽度) / 2
|
||||
var ox = ((offset.x + img.width - area.right) - (area.left - offset.x)) / 2;
|
||||
var oy = ((offset.y + img.height - area.bottom) - (area.top - offset.y)) / 2;
|
||||
changeImageRect({
|
||||
instance: o,
|
||||
check: true,
|
||||
x: -ox - oy,
|
||||
y: -oy + ox
|
||||
});
|
||||
};
|
||||
module.exports = {
|
||||
/**
|
||||
* 初始化：观察数据变更
|
||||
* @param {Object} newVal 新数据
|
||||
* @param {Object} oldVal 旧数据
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
initObserver: function(newVal, oldVal, o, i) {
|
||||
if(newVal) {
|
||||
img = newVal.img;
|
||||
sys = newVal.sys;
|
||||
area = newVal.area;
|
||||
minScale = img.minScale;
|
||||
resetData();
|
||||
img.src && changeImageRect({
|
||||
instance: o,
|
||||
x: (sys.windowWidth - img.width) / 2,
|
||||
y: (sys.windowHeight - sys.offsetBottom - img.height) / 2
|
||||
});
|
||||
changeAreaRect({
|
||||
instance: o
|
||||
});
|
||||
// console.log('initRect', JSON.stringify(newVal))
|
||||
}
|
||||
},
|
||||
/**
|
||||
* 鼠标滚轮滚动
|
||||
* @param {Object} e 事件对象
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
mousewheel: function(e, o) {
|
||||
if(!img.src) return;
|
||||
scaleImage({
|
||||
instance: o,
|
||||
check: true,
|
||||
// 鼠标向上滚动时，deltaY 固定 -100，鼠标向下滚动时，deltaY 固定 100
|
||||
scale: e.detail.deltaY > 0 ? -0.05 : 0.05,
|
||||
x: e.touches[0].pageX,
|
||||
y: e.touches[0].pageY
|
||||
});
|
||||
},
|
||||
/**
|
||||
* 触摸开始
|
||||
* @param {Object} e 事件对象
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
touchstart: function(e, o) {
|
||||
if(!img.src) return;
|
||||
touches = e.touches;
|
||||
activeAngle = area.showAngle ? getToucheAngle(touches[0].pageX, touches[0].pageY) : 0;
|
||||
if(touches.length === 1 && activeAngle !== 0) {
|
||||
touchType = 'stretch'; // 伸缩裁剪区域
|
||||
} else {
|
||||
touchType = '';
|
||||
}
|
||||
// console.log('touchstart', JSON.stringify(e), activeAngle)
|
||||
},
|
||||
/**
|
||||
* 触摸移动
|
||||
* @param {Object} e 事件对象
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
touchmove: function(e, o) {
|
||||
if(!img.src) return;
|
||||
// console.log('touchmove', JSON.stringify(e), JSON.stringify(o))
|
||||
if(touchType === 'stretch') { // 触摸四个角进行拉伸
|
||||
var point = e.touches[0];
|
||||
var start = touches[0];
|
||||
var x = point.pageX - start.pageX;
|
||||
var y = point.pageY - start.pageY;
|
||||
if(x !== 0 || y !== 0) {
|
||||
var maxX = num(area.width * (1 - area.minScale));
|
||||
var maxY = num(area.height * (1 - area.minScale));
|
||||
// console.log(x, y, maxX, maxY, offset, area)
|
||||
touches[0] = point;
|
||||
var r = rotate / 90 % 2;
|
||||
var m = r === 1 ? num((img.height - img.width) / 2) : 0; // 宽高差值一半
|
||||
var xCompare = r === 1 ? lessThanByFault(img.height, area.width) : lessThanByFault(img.width, area.width);
|
||||
var yCompare = r === 1 ? lessThanByFault(img.width, area.height) : lessThanByFault(img.height, area.height)
|
||||
var isInclude = xCompare && yCompare;
|
||||
var isIntersect = area.checkRange && (xCompare || yCompare); // 图片是否包含在裁剪区域内
|
||||
var isReverse = !isInclude || num((offset.x - area.left) / area.width) <= num((offset.y - area.top) / area.height) || (area.width > area.height && img.width < img.height && r === 1);
|
||||
switch(activeAngle) {
|
||||
case 1: // 左上角
|
||||
x = num(x + areaOffset.left);
|
||||
y = num(y + areaOffset.top);
|
||||
if(x >= 0 && y >= 0) { // 有效滑动
|
||||
var t = num(offset.y + m - area.top);
|
||||
var l = num(offset.x - m - area.left);
|
||||
// && (offset.x + img.width < area.right || offset.y + img.height < area.bottom)
|
||||
var max = isIntersect && ((l >= 0) || (t >= 0))
|
||||
? minimum(t, l)
|
||||
: false;
|
||||
if(x > y && isReverse) { // 以x轴滑动距离为缩放基准
|
||||
maxX = validMax(maxX, max, isInclude, l, t, area.width / area.height);
|
||||
if(x > maxX) x = maxX;
|
||||
y = num(x * area.height / area.width);
|
||||
} else { // 以y轴滑动距离为缩放基准
|
||||
maxY = validMax(maxY, max, isInclude, t, l, area.height / area.width);
|
||||
if(y > maxY) y = maxY;
|
||||
x = num(y * area.width / area.height);
|
||||
}
|
||||
areaOffset.left = x;
|
||||
areaOffset.top = y;
|
||||
}
|
||||
break;
|
||||
case 2: // 右上角
|
||||
x = num(x + areaOffset.right);
|
||||
y = num(y + areaOffset.top);
|
||||
if(x <= 0 && y >= 0) { // 有效滑动
|
||||
var w = (r === 1 ? img.height : img.width);
|
||||
var t = num(offset.y + m - area.top);
|
||||
var l = num(area.right + m - offset.x - w);
|
||||
var max = isIntersect && ((t >= 0) || (l >= 0))
|
||||
? minimum(t, l)
|
||||
: false;
|
||||
// var max = isInclude && ((offset.x > 0 && offset.x + img.width <= area.right) || (offset.y > 0 && offset.y >= area.top))
|
||||
// ? minimum(offset.y - area.top, area.right - offset.x - img.width)
|
||||
// : false;
|
||||
// console.log(offset.x, offset.y, img.width, img.height, area.top, area.right, m, max)
|
||||
// console.log(offset.y + m - area.top, area.right + m - offset.x - w)
|
||||
if(-x > y && isReverse) { // 以x轴滑动距离为缩放基准
|
||||
maxX = validMax(maxX, max, isInclude, l, t, area.width / area.height);
|
||||
if(-x > maxX) x = -maxX;
|
||||
y = num(-x * area.height / area.width);
|
||||
} else { // 以y轴滑动距离为缩放基准
|
||||
maxY = validMax(maxY, max, isInclude, t, l, area.height / area.width);
|
||||
if(y > maxY) y = maxY;
|
||||
x = num(-y * area.width / area.height);
|
||||
}
|
||||
areaOffset.right = x;
|
||||
areaOffset.top = y;
|
||||
}
|
||||
break;
|
||||
case 3: // 左下角
|
||||
x += num(x + areaOffset.left);
|
||||
y += num(y + areaOffset.bottom);
|
||||
if(x >= 0 && y <= 0) { // 有效滑动
|
||||
var w = (r === 1 ? img.width : img.height);
|
||||
var t = num(area.bottom - m - offset.y - w);
|
||||
var l = num(offset.x - m - area.left);
|
||||
var max = isIntersect && ((l >= 0) || (t >= 0))
|
||||
? minimum(t, l)
|
||||
: false;
|
||||
if(x > -y && isReverse) { // 以x轴滑动距离为缩放基准
|
||||
maxX = validMax(maxX, max, isInclude, l, t, area.width / area.height);
|
||||
if(x > maxX) x = maxX;
|
||||
y = num(-x * area.height / area.width);
|
||||
} else { // 以y轴滑动距离为缩放基准
|
||||
maxY = validMax(maxY, max, isInclude, t, l, area.height / area.width);
|
||||
if(-y > maxY) y = -maxY;
|
||||
x = num(-y * area.width / area.height);
|
||||
}
|
||||
areaOffset.left = x;
|
||||
areaOffset.bottom = y;
|
||||
}
|
||||
break;
|
||||
case 4: // 右下角
|
||||
x = num(x + areaOffset.right);
|
||||
y = num(y + areaOffset.bottom);
|
||||
if(x <= 0 && y <= 0) { // 有效滑动
|
||||
var w = (r === 1 ? img.height : img.width);
|
||||
var h = (r === 1 ? img.width : img.height);
|
||||
var t = num(area.bottom - offset.y - h - m);
|
||||
var l = num(area.right + m - offset.x - w);
|
||||
var max = isIntersect && ((l >= 0) || (t >= 0))
|
||||
? minimum(t, l)
|
||||
: false;
|
||||
if(-x > -y && isReverse) { // 以x轴滑动距离为缩放基准
|
||||
maxX = validMax(maxX, max, isInclude, l, t, area.width / area.height);
|
||||
if(-x > maxX) x = -maxX;
|
||||
y = num(x * area.height / area.width);
|
||||
} else { // 以y轴滑动距离为缩放基准
|
||||
maxY = validMax(maxY, max, isInclude, t, l, area.height / area.width);
|
||||
if(-y > maxY) y = -maxY;
|
||||
x = num(y * area.width / area.height);
|
||||
}
|
||||
areaOffset.right = x;
|
||||
areaOffset.bottom = y;
|
||||
}
|
||||
break;
|
||||
}
|
||||
// console.log(x, y, JSON.stringify(areaOffset))
|
||||
changeAreaRect({
|
||||
instance: o,
|
||||
});
|
||||
// this.draw();
|
||||
}
|
||||
} else if (e.touches.length == 2) { // 双点触摸缩放
|
||||
var start = getDistanceByTouches(touches);
|
||||
var end = getDistanceByTouches(e.touches);
|
||||
scaleImage({
|
||||
instance: o,
|
||||
check: !area.bounce,
|
||||
scale: (end.c - start.c) / 100,
|
||||
x: end.x,
|
||||
y: end.y
|
||||
});
|
||||
touchType = 'scale';
|
||||
} else if(touchType === 'scale') {// 从双点触摸变成单点触摸 / 从缩放变成拖动
|
||||
touchType = 'move';
|
||||
} else {
|
||||
changeImageRect({
|
||||
instance: o,
|
||||
check: !area.bounce,
|
||||
x: e.touches[0].pageX - touches[0].pageX,
|
||||
y: e.touches[0].pageY - touches[0].pageY
|
||||
});
|
||||
touchType = 'move';
|
||||
}
|
||||
touches = e.touches;
|
||||
},
|
||||
/**
|
||||
* 触摸结束
|
||||
* @param {Object} e 事件对象
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
touchend: function(e, o) {
|
||||
if(!img.src) return;
|
||||
if(touchType === 'stretch') { // 拉伸裁剪区域的四个角缩放
|
||||
// 裁剪区域宽度被缩放到多少
|
||||
var left = areaOffset.left;
|
||||
var right = areaOffset.right;
|
||||
var top = areaOffset.top;
|
||||
var bottom = areaOffset.bottom;
|
||||
var w = area.width + right - left;
|
||||
var h = area.height + bottom - top;
|
||||
// 图像放大倍数
|
||||
var p = scale * (area.width / w) - scale;
|
||||
// 复原裁剪区域
|
||||
areaOffset = { left: 0, right: 0, top: 0, bottom: 0 };
|
||||
changeAreaRect({
|
||||
instance: o,
|
||||
});
|
||||
scaleImage({
|
||||
instance: o,
|
||||
scale: p,
|
||||
x: area.left + left + (1 === activeAngle || 3 === activeAngle ? w : 0),
|
||||
y: area.top + top + (1 === activeAngle || 2 === activeAngle ? h : 0)
|
||||
});
|
||||
} else if (area.bounce) { // 检查边界并矫正，实现拖动到边界时有回弹效果
|
||||
changeImageRect({
|
||||
instance: o,
|
||||
check: true
|
||||
});
|
||||
}
|
||||
},
|
||||
/**
|
||||
* 顺时针翻转图片90°
|
||||
* @param {Object} e 事件对象
|
||||
* @param {Object} o 组件实例对象
|
||||
*/
|
||||
rotateImage: function(e, o) {
|
||||
rotateImage(e, o, 90);
|
||||
},
|
||||
rotateImage90: function(e, o) {
|
||||
rotateImage(e, o, 90)
|
||||
},
|
||||
rotateImage270: function(e, o) {
|
||||
rotateImage(e, o, 270)
|
||||
},
|
||||
// 此处只用于对齐其他平台端的样式参数，防止异常，无作用
|
||||
imageStyles: '',
|
||||
maskStylesList: ['', '', '', ''],
|
||||
borderStyles: '',
|
||||
gridStylesList: ['', '', '', ''],
|
||||
angleStylesList: ['', '', '', ''],
|
||||
circleBoxStyles: '',
|
||||
circleStyles: '',
|
||||
}
|
||||
</wxs>
|
||||
<view class="image-cropper data-v-7129956f" style="{{'z-index:' + C}}" bindwheel="{{cropper.mousewheel}}"><canvas wx:if="{{a}}" type="2d" id="imgCanvas" class="img-canvas data-v-7129956f" style="{{'width:' + b + ';' + ('height:' + c)}}"></canvas><canvas wx:else id="imgCanvas" canvas-id="imgCanvas" class="img-canvas data-v-7129956f" style="{{'width:' + d + ';' + ('height:' + e)}}"></canvas><view id="pic-preview" class="pic-preview data-v-7129956f" change:init="{{cropper.initObserver}}" init="{{p}}" bindtouchstart="{{cropper.touchstart}}" bindtouchmove="{{cropper.touchmove}}" bindtouchend="{{cropper.touchend}}"><image wx:if="{{f}}" id="crop-image" class="crop-image data-v-7129956f" style="{{_s(cropper.imageStyles)}}" src="{{g}}" webp></image><view wx:for="{{h}}" wx:for-item="item" wx:key="a" id="{{item.b}}" class="crop-mask-block data-v-7129956f" style="{{_s(cropper.maskStylesList[index])}}"></view><view wx:if="{{i}}" id="crop-border" class="crop-border data-v-7129956f" style="{{_s(cropper.borderStyles)}}"></view><view wx:if="{{j}}" id="crop-circle-box" class="crop-circle-box data-v-7129956f" style="{{_s(cropper.circleBoxStyles)}}"><view class="crop-circle data-v-7129956f" id="crop-circle" style="{{_s(cropper.circleStyles)}}"></view></view><block wx:if="{{k}}"><view wx:for="{{l}}" wx:for-item="item" wx:key="a" id="{{item.b}}" class="crop-grid data-v-7129956f" style="{{_s(cropper.gridStylesList[index])}}"></view></block><block wx:if="{{m}}"><view wx:for="{{n}}" wx:for-item="item" wx:key="a" id="{{item.b}}" class="crop-angle data-v-7129956f" style="{{_s(cropper.angleStylesList[index])}}"><view class="data-v-7129956f" style="{{o}}"></view></view></block></view><slot/><view class="fixed-bottom safe-area-inset-bottom data-v-7129956f" style="{{'z-index:' + B}}"><view wx:if="{{q}}" class="action-bar data-v-7129956f"><view wx:if="{{r}}" class="rotate-icon data-v-7129956f" bindtap="{{cropper.rotateImage270}}"></view><view wx:if="{{s}}" class="rotate-icon is-reverse data-v-7129956f" bindtap="{{cropper.rotateImage90}}"></view></view><view wx:if="{{t}}" class="choose-btn data-v-7129956f" bindtap="{{v}}">确定</view><block wx:elif="{{w}}"><view class="rechoose data-v-7129956f" bindtap="{{x}}">重选</view><button class="button warn data-v-7129956f" type="primary" size="mini" bindtap="{{y}}">取消</button><button class="button data-v-7129956f" size="mini" bindtap="{{z}}">确定</button></block><view wx:else class="choose-btn data-v-7129956f" bindtap="{{A}}">选择图片</view></view></view>
|
||||
+146
@@ -0,0 +1,146 @@
|
||||
/**
|
||||
* 这里是uni-app内置的常用样式变量
|
||||
*
|
||||
* uni-app 官方扩展插件及插件市场（https://ext.dcloud.net.cn）上很多三方插件均使用了这些样式变量
|
||||
* 如果你是插件开发者，建议你使用scss预处理，并在插件代码中直接使用这些变量（无需 import 这个文件），方便用户通过搭积木的方式开发整体风格一致的App
|
||||
*
|
||||
*/
|
||||
/**
|
||||
* 如果你是App开发者（插件使用者），你可以通过修改这些变量来定制自己的插件主题，实现自定义主题功能
|
||||
*
|
||||
* 如果你的项目同样使用了scss预处理，你也可以直接在你的 scss 代码中使用如下变量，同时无需 import 这个文件
|
||||
*/
|
||||
/* 颜色变量 */
|
||||
/* 行为相关颜色 */
|
||||
/* 文字基本颜色 */
|
||||
/* 背景颜色 */
|
||||
/* 边框颜色 */
|
||||
/* 尺寸变量 */
|
||||
/* 文字尺寸 */
|
||||
/* 图片尺寸 */
|
||||
/* Border Radius */
|
||||
/* 水平间距 */
|
||||
/* 垂直间距 */
|
||||
/* 透明度 */
|
||||
/* 文章场景相关 */
|
||||
.image-cropper.data-v-7129956f {
|
||||
position: fixed;
|
||||
left: 0;
|
||||
right: 0;
|
||||
top: 0;
|
||||
bottom: 0;
|
||||
overflow: hidden;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
background-color: #000;
|
||||
}
|
||||
.image-cropper .img-canvas.data-v-7129956f {
|
||||
position: absolute !important;
|
||||
transform: translateX(-100%);
|
||||
}
|
||||
.image-cropper .pic-preview.data-v-7129956f {
|
||||
width: 100%;
|
||||
flex: 1;
|
||||
position: relative;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-mask-block.data-v-7129956f {
|
||||
background-color: rgba(51, 51, 51, 0.8);
|
||||
z-index: 2;
|
||||
position: fixed;
|
||||
box-sizing: border-box;
|
||||
pointer-events: none;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-circle-box.data-v-7129956f {
|
||||
position: fixed;
|
||||
box-sizing: border-box;
|
||||
z-index: 2;
|
||||
pointer-events: none;
|
||||
overflow: hidden;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-circle-box .crop-circle.data-v-7129956f {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-image.data-v-7129956f {
|
||||
padding: 0 !important;
|
||||
margin: 0 !important;
|
||||
border-radius: 0 !important;
|
||||
display: block !important;
|
||||
-webkit-backface-visibility: hidden;
|
||||
backface-visibility: hidden;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-border.data-v-7129956f {
|
||||
position: fixed;
|
||||
border: 1px solid #fff;
|
||||
box-sizing: border-box;
|
||||
z-index: 3;
|
||||
pointer-events: none;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-grid.data-v-7129956f {
|
||||
position: fixed;
|
||||
z-index: 3;
|
||||
border-style: dashed;
|
||||
border-color: #fff;
|
||||
pointer-events: none;
|
||||
opacity: 0.5;
|
||||
}
|
||||
.image-cropper .pic-preview .crop-angle.data-v-7129956f {
|
||||
position: fixed;
|
||||
z-index: 3;
|
||||
border-style: solid;
|
||||
border-color: #fff;
|
||||
pointer-events: none;
|
||||
}
|
||||
.image-cropper .fixed-bottom.data-v-7129956f {
|
||||
position: fixed;
|
||||
left: 0;
|
||||
right: 0;
|
||||
bottom: 0;
|
||||
z-index: 99;
|
||||
display: flex;
|
||||
flex-direction: row;
|
||||
background-color: #f8f8f8;
|
||||
}
|
||||
.image-cropper .fixed-bottom .action-bar.data-v-7129956f {
|
||||
position: absolute;
|
||||
top: -90rpx;
|
||||
left: 10rpx;
|
||||
display: flex;
|
||||
}
|
||||
.image-cropper .fixed-bottom .action-bar .rotate-icon.data-v-7129956f {
|
||||
background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAAAXNSR0IArs4c6QAABCFJREFUaEPtml3IpVMUx3//ko/ChTIyiGFSMyhllI8bc4F85yuNC2FCqLmQC1+FZORiEkUMNW7UjKjJULgxV+NzSkxDhEkZgwsyigv119J63p7zvOc8z37OmXdOb51dz82711r7/99r7bXXXucVi3xokeNnRqCvB20fDmwAlgK/5bcD+FTSr33tHXQP2H4MeHQE0A+B5yRtLiUyDQJrgVc6AAaBpyV93kXkoBMIQLbfBS5NcK8BRwDXNcD+AdwnaVMbiWkRCPBBohpxHuK7M7865sclRdgNHVMhkF6IMIpwirFEUhzo8M7lwIvASTXEqyVtH8ZgagQSbOzsDknv18HZXpHn5IL8+94IOUm7miSmSqAttjPdbgGuTrnNktYsGgLpoYuAD2qg1zRTbG8P2D4SOC6/Q7vSHPALsE/S7wWy80RsPw/ckxMfSTq/LtRJwPbxwF3ASiCUTxwHCPAnEBfVF8AWSTtL7Ng+LfWOTfmlkn6udFsJ5K15R6a4kvX6yGyUFBvTOWzHXXFzCt4g6c1OArYj9iIGh43YgR+BvztXh1PSa4cMkd0jaVmXDduPAE+k3HpJD7cSGFKvfAc8FQUX8IOk/V2L1udtB/hTgdOBW4Aba/M7Ja1qs2f7euCNlHlZUlx4/495IWQ7Jl+qGbxX0gt9AHfJ2o6zFBVoNVrDKe+F3Sm8VdK1bQQ+A85JgXckXdkFaJx527cC9TpnVdvBtl3h2iapuhsGPdBw1b9xnUvaNw7AEh3bnwDnpuwGSfeP0rN9NvAMELXRXFkxEEK2nwQeSiOtRVQJwC4Z29cAW1Nuu6TVXTrN+SaBt4ErUug2Sa/2NdhH3vZy4NvU2S/p6D768w5xI3WOrAD7LtISFpGdIhVXKfaYvjd20wP13L9M0p4DBbaFRKToSLExVkr6qs+aIwlI6iwz+izUQqC+ab29PiMwqRcmPXczD8w8MFj1zg7xXEqbpdHCw7FgWSjafZL+KcQxtpjteCeflwYulFR/J3TabSslVkj6utPChAK2f6q9uZdLitKieLQRuExSvX9ZbLRUMFs09efpUZL+KtUfVo1GW/umNHC3pOhRLtiwfSbwZS6wV9IJfRdreuBBYH0a2STp9r4G+8jbXgc8mzoDT8VSO00ClwDv1ZR7XyylC4ec7ejaLUmdsV6Aw7oSbwFXpdFdks7qA6pU1na0aR6owgeIR/1cx63UzjAC0YXYVjMQHlkn6ZtSo21ytuPZGKFagQ/xsXZ/3iGuFrYdjafXG0DiQMeBi47c9/GV3BO247UV38n5o0UAP6xmu7jFOGxjRr66On5NPBDOCBsDTapxjHY1dyOcolNXnYlx1himE53p2PmNkxosevfavhg4Izt2k7TXPwZ2S6p6QZPin/2rwcQ7OKmBohCadJGF1P8PG6aaQBKVX/8AAAAASUVORK5CYII=");
|
||||
background-size: 60% 60%;
|
||||
background-repeat: no-repeat;
|
||||
background-position: center;
|
||||
width: 80rpx;
|
||||
height: 80rpx;
|
||||
}
|
||||
.image-cropper .fixed-bottom .action-bar .rotate-icon.is-reverse.data-v-7129956f {
|
||||
transform: rotateY(180deg);
|
||||
}
|
||||
.image-cropper .fixed-bottom .rechoose.data-v-7129956f {
|
||||
color: #007aff;
|
||||
padding: 0 15px;
|
||||
line-height: 100rpx;
|
||||
}
|
||||
.image-cropper .fixed-bottom .choose-btn.data-v-7129956f {
|
||||
color: #007aff;
|
||||
text-align: center;
|
||||
line-height: 100rpx;
|
||||
flex: 1;
|
||||
}
|
||||
.image-cropper .fixed-bottom .button.data-v-7129956f {
|
||||
margin: auto 15px auto auto;
|
||||
background-color: #4cd964;
|
||||
color: #fff;
|
||||
}
|
||||
.image-cropper .fixed-bottom .warn.data-v-7129956f {
|
||||
margin: auto 15px auto auto;
|
||||
background-color: #dd524d;
|
||||
color: #fff;
|
||||
}
|
||||
.image-cropper .safe-area-inset-bottom.data-v-7129956f {
|
||||
padding-bottom: 0;
|
||||
padding-bottom: constant(safe-area-inset-bottom);
|
||||
padding-bottom: env(safe-area-inset-bottom);
|
||||
}
|
||||
Reference in New Issue
Block a user