info
This commit is contained in:
@@ -0,0 +1,505 @@
|
||||
<template>
|
||||
<view class="tui-cropper__box" @touchmove.stop.prevent="stop">
|
||||
<image
|
||||
@load="imageLoad"
|
||||
@error="imageLoad"
|
||||
@touchstart="parse.touchstart"
|
||||
@touchmove="parse.touchmove"
|
||||
@touchend="parse.touchend"
|
||||
:data-minScale="minScale"
|
||||
:data-maxScale="maxScale"
|
||||
:style="{
|
||||
width: (imgWidth ? imgWidth : width) + 'px',
|
||||
height: imgHeight ? imgHeight + 'px' : 'auto',
|
||||
transitionDuration: (animation ? 0.3 : 0) + 's'
|
||||
}"
|
||||
class="tui-cropper__image"
|
||||
:src="imageUrl"
|
||||
v-if="imageUrl"
|
||||
mode="widthFix"
|
||||
></image>
|
||||
<view class="tui-backdrop__cropper" :style="{ width: width + 'px', height: height + 'px', borderRadius: isRound ? '50%' : '0' }">
|
||||
<view
|
||||
class="tui-cropper__border"
|
||||
:change:prop="parse.propsChange"
|
||||
:prop="props"
|
||||
:data-width="width"
|
||||
:data-height="height"
|
||||
:data-windowHeight="sysInfo.windowHeight || 600"
|
||||
:data-windowWidth="sysInfo.windowWidth || 400"
|
||||
:data-imgTop="imgTop"
|
||||
:data-imgLeft="imgLeft"
|
||||
:data-imgWidth="imgWidth"
|
||||
:data-imgHeight="imgHeight"
|
||||
:data-angle="angle"
|
||||
:style="{ borderRadius: isRound ? '50%' : '0', border: border }"
|
||||
></view>
|
||||
</view>
|
||||
<canvas
|
||||
canvas-id="tui-image__cropper"
|
||||
id="tui-image__cropper"
|
||||
:disable-scroll="true"
|
||||
:style="{ width: width * scaleRatio + 'px', height: height * scaleRatio + 'px' }"
|
||||
class="tui-cropper__canvas"
|
||||
></canvas>
|
||||
<view class="tui-cropper__tabbar" v-if="!custom">
|
||||
<view class="tui-op__btn" @tap.stop="back">取消</view>
|
||||
<image :src="rotateImg" class="tui-rotate__img" @tap="setAngle"></image>
|
||||
<view class="tui-op__btn" @tap.stop="getImage">完成</view>
|
||||
</view>
|
||||
</view>
|
||||
</template>
|
||||
<script src="./tui-cropper.wxs" module="parse" lang="wxs"></script>
|
||||
<script>
|
||||
export default {
|
||||
name: 'tuiCropper',
|
||||
props: {
|
||||
//图片路径
|
||||
imageUrl: {
|
||||
type: String,
|
||||
default: ''
|
||||
},
|
||||
//裁剪框高度 px
|
||||
height: {
|
||||
type: Number,
|
||||
default: 280
|
||||
},
|
||||
//裁剪框宽度 px
|
||||
width: {
|
||||
type: Number,
|
||||
default: 280
|
||||
},
|
||||
//是否为圆形裁剪框
|
||||
isRound: {
|
||||
type: Boolean,
|
||||
default: true
|
||||
},
|
||||
//裁剪框边框
|
||||
border: {
|
||||
type: String,
|
||||
default: '1px solid #fff'
|
||||
},
|
||||
//生成的图片尺寸相对剪裁框的比例
|
||||
scaleRatio: {
|
||||
type: Number,
|
||||
default: 2
|
||||
},
|
||||
//图片的质量，取值范围为 (0, 1]，不在范围内时当作1.0处理
|
||||
quality: {
|
||||
type: Number,
|
||||
default: 0.8
|
||||
},
|
||||
//图片旋转角度
|
||||
rotateAngle: {
|
||||
type: Number,
|
||||
default: 0
|
||||
},
|
||||
//图片最小缩放比
|
||||
minScale: {
|
||||
type: Number,
|
||||
default: 0.5
|
||||
},
|
||||
//图片最大缩放比
|
||||
maxScale: {
|
||||
type: Number,
|
||||
default: 2
|
||||
},
|
||||
//自定义操作栏（为true时隐藏底部操作栏）
|
||||
custom: {
|
||||
type: Boolean,
|
||||
default: false
|
||||
},
|
||||
//值发生改变开始裁剪（custom为true时生效）
|
||||
startCutting: {
|
||||
type: [Number, Boolean],
|
||||
default: 0
|
||||
},
|
||||
/**
|
||||
* 是否返回base64(H5端默认base64)
|
||||
* 支持平台：App，微信小程序，支付宝小程序,H5(默认url就是base64)
|
||||
**/
|
||||
isBase64: {
|
||||
type: Boolean,
|
||||
default: false
|
||||
},
|
||||
//裁剪时是否显示loadding
|
||||
loadding: {
|
||||
type: Boolean,
|
||||
default: true
|
||||
},
|
||||
//旋转icon
|
||||
rotateImg: {
|
||||
type: String,
|
||||
default: '/static/components/cropper/img_rotate.png'
|
||||
}
|
||||
},
|
||||
data() {
|
||||
return {
|
||||
TIME_CUT_CENTER: null,
|
||||
cutX: 0, //画布x轴起点
|
||||
cutY: 0, //画布y轴起点0
|
||||
imgWidth: 0,
|
||||
imgHeight: 0,
|
||||
scale: 1, //图片缩放比
|
||||
angle: 0, //图片旋转角度
|
||||
animation: false, //是否开启图片过渡效果
|
||||
animationTime: null,
|
||||
imgTop: 0,
|
||||
imgLeft: 0,
|
||||
ctx: null,
|
||||
sysInfo: {},
|
||||
props: '',
|
||||
sizeChange: 0, //2
|
||||
angleChange: 0, //3
|
||||
resetChange: 0, //4
|
||||
centerChange: 0 //5
|
||||
};
|
||||
},
|
||||
watch: {
|
||||
//定义变量然后利用change触发
|
||||
imageUrl(val, oldVal) {
|
||||
this.imageReset();
|
||||
this.showLoading();
|
||||
uni.getImageInfo({
|
||||
src: val,
|
||||
success: res => {
|
||||
//计算图片尺寸
|
||||
this.imgComputeSize(res.width, res.height);
|
||||
this.angleChange++;
|
||||
this.props = `3,${this.angleChange}`;
|
||||
},
|
||||
fail: err => {
|
||||
this.imgComputeSize();
|
||||
this.angleChange++;
|
||||
this.props = `3,${this.angleChange}`;
|
||||
}
|
||||
});
|
||||
},
|
||||
rotateAngle(val) {
|
||||
this.animation = true;
|
||||
this.angle = val;
|
||||
this.angleChanged(val);
|
||||
},
|
||||
animation(val) {
|
||||
//开启过渡220毫秒之后自动关闭
|
||||
clearTimeout(this.animationTime);
|
||||
if (val) {
|
||||
this.animationTime = setTimeout(() => {
|
||||
this.animation = false;
|
||||
}, 220);
|
||||
}
|
||||
},
|
||||
startCutting(val) {
|
||||
if (this.custom && val) {
|
||||
this.getImage();
|
||||
}
|
||||
}
|
||||
},
|
||||
mounted() {
|
||||
this.sysInfo = uni.getSystemInfoSync();
|
||||
this.imgTop = this.sysInfo.windowHeight / 2;
|
||||
this.imgLeft = this.sysInfo.windowWidth / 2;
|
||||
this.ctx = uni.createCanvasContext('tui-image__cropper', this);
|
||||
//初始化
|
||||
setTimeout(() => {
|
||||
this.props = '1,1';
|
||||
}, 0);
|
||||
setTimeout(() => {
|
||||
this.$emit('ready', {});
|
||||
}, 200);
|
||||
},
|
||||
methods: {
|
||||
//网络图片转成本地文件[同步执行]
|
||||
async getLocalImage(url) {
|
||||
return await new Promise((resolve, reject) => {
|
||||
uni.downloadFile({
|
||||
url: url,
|
||||
success: res => {
|
||||
resolve(res.tempFilePath);
|
||||
},
|
||||
fail: res => {
|
||||
reject(false);
|
||||
}
|
||||
});
|
||||
});
|
||||
},
|
||||
//返回裁剪后图片信息
|
||||
getImage() {
|
||||
if (!this.imageUrl) {
|
||||
uni.showToast({
|
||||
title: '请选择图片',
|
||||
icon: 'none'
|
||||
});
|
||||
return;
|
||||
}
|
||||
this.loadding && this.showLoading();
|
||||
let draw = async () => {
|
||||
//图片实际大小
|
||||
let imgWidth = this.imgWidth * this.scale * this.scaleRatio;
|
||||
let imgHeight = this.imgHeight * this.scale * this.scaleRatio;
|
||||
//canvas和图片的相对距离
|
||||
let xpos = this.imgLeft - this.cutX;
|
||||
let ypos = this.imgTop - this.cutY;
|
||||
//旋转画布
|
||||
this.ctx.translate(xpos * this.scaleRatio, ypos * this.scaleRatio);
|
||||
this.ctx.rotate((this.angle * Math.PI) / 180);
|
||||
let imgUrl = this.imageUrl;
|
||||
// #ifdef APP-PLUS || MP-WEIXIN
|
||||
if (~this.imageUrl.indexOf('https:')) {
|
||||
imgUrl = await this.getLocalImage(this.imageUrl);
|
||||
}
|
||||
// #endif
|
||||
this.ctx.drawImage(imgUrl, -imgWidth / 2, -imgHeight / 2, imgWidth, imgHeight);
|
||||
this.ctx.draw(false, () => {
|
||||
let params = {
|
||||
width: this.width * this.scaleRatio,
|
||||
height: Math.round(this.height * this.scaleRatio),
|
||||
destWidth: this.width * this.scaleRatio,
|
||||
destHeight: Math.round(this.height) * this.scaleRatio,
|
||||
fileType: 'png',
|
||||
quality: this.quality
|
||||
};
|
||||
let data = {
|
||||
url: '',
|
||||
base64: '',
|
||||
width: this.width * this.scaleRatio,
|
||||
height: this.height * this.scaleRatio
|
||||
};
|
||||
// #ifdef MP-ALIPAY
|
||||
|
||||
if (this.isBase64) {
|
||||
this.ctx.toDataURL(params).then(dataURL => {
|
||||
data.base64 = dataURL;
|
||||
this.loadding && uni.hideLoading();
|
||||
this.$emit('cropper', data);
|
||||
});
|
||||
} else {
|
||||
this.ctx.toTempFilePath({
|
||||
...params,
|
||||
success: res => {
|
||||
data.url = res.tempFilePath;
|
||||
this.loadding && uni.hideLoading();
|
||||
this.$emit('cropper', data);
|
||||
}
|
||||
});
|
||||
}
|
||||
// #endif
|
||||
|
||||
// #ifndef MP-ALIPAY
|
||||
// #ifdef MP-BAIDU || MP-TOUTIAO || H5
|
||||
this.isBase64 = false;
|
||||
// #endif
|
||||
if (this.isBase64) {
|
||||
uni.canvasGetImageData(
|
||||
{
|
||||
canvasId: 'tui-image__cropper',
|
||||
x: 0,
|
||||
y: 0,
|
||||
width: this.width * this.scaleRatio,
|
||||
height: Math.round(this.height * this.scaleRatio),
|
||||
success: res => {
|
||||
const arrayBuffer = new Uint8Array(res.data);
|
||||
const base64 = uni.arrayBufferToBase64(arrayBuffer);
|
||||
data.base64 = base64;
|
||||
this.loadding && uni.hideLoading();
|
||||
this.$emit('cropper', data);
|
||||
}
|
||||
},
|
||||
this
|
||||
);
|
||||
} else {
|
||||
uni.canvasToTempFilePath(
|
||||
{
|
||||
...params,
|
||||
canvasId: 'tui-image__cropper',
|
||||
success: res => {
|
||||
data.url = res.tempFilePath;
|
||||
// #ifdef H5
|
||||
data.base64 = res.tempFilePath;
|
||||
// #endif
|
||||
this.loadding && uni.hideLoading();
|
||||
this.$emit('cropper', data);
|
||||
},
|
||||
fail(res) {
|
||||
console.log(res);
|
||||
}
|
||||
},
|
||||
this
|
||||
);
|
||||
}
|
||||
// #endif
|
||||
});
|
||||
};
|
||||
draw();
|
||||
},
|
||||
change(e) {
|
||||
this.cutX = e.cutX || 0;
|
||||
this.cutY = e.cutY || 0;
|
||||
this.imgWidth = e.imgWidth || this.imgWidth;
|
||||
this.imgHeight = e.imgHeight || this.imgHeight;
|
||||
this.scale = e.scale || 1;
|
||||
this.angle = e.angle || 0;
|
||||
this.imgTop = e.imgTop || 0;
|
||||
this.imgLeft = e.imgLeft || 0;
|
||||
},
|
||||
imageReset() {
|
||||
this.scale = 1;
|
||||
this.angle = 0;
|
||||
let sys = this.sysInfo.windowHeight ? this.sysInfo : uni.getSystemInfoSync();
|
||||
this.imgTop = sys.windowHeight / 2;
|
||||
this.imgLeft = sys.windowWidth / 2;
|
||||
this.resetChange++;
|
||||
this.props = `4,${this.resetChange}`;
|
||||
//初始化旋转角度 0deg
|
||||
this.$emit('initAngle', {});
|
||||
},
|
||||
imgComputeSize(width, height) {
|
||||
//默认按图片最小边 = 对应裁剪框尺寸
|
||||
let imgWidth = width,
|
||||
imgHeight = height;
|
||||
if (imgWidth && imgHeight) {
|
||||
if (imgWidth / imgHeight > this.width / this.height) {
|
||||
imgHeight = this.height;
|
||||
imgWidth = (width / height) * imgHeight;
|
||||
} else {
|
||||
imgWidth = this.width;
|
||||
imgHeight = (height / width) * imgWidth;
|
||||
}
|
||||
} else {
|
||||
let sys = this.sysInfo.windowHeight ? this.sysInfo : uni.getSystemInfoSync();
|
||||
imgWidth = sys.windowWidth;
|
||||
imgHeight = 0;
|
||||
}
|
||||
this.imgWidth = imgWidth;
|
||||
this.imgHeight = imgHeight;
|
||||
this.sizeChange++;
|
||||
this.props = `2,${this.sizeChange}`;
|
||||
},
|
||||
imageLoad(e) {
|
||||
this.imageReset();
|
||||
uni.hideLoading();
|
||||
this.$emit('imageLoad', {});
|
||||
},
|
||||
moveStop() {
|
||||
clearTimeout(this.TIME_CUT_CENTER);
|
||||
this.TIME_CUT_CENTER = setTimeout(() => {
|
||||
this.centerChange++;
|
||||
this.props = `5,${this.centerChange}`;
|
||||
}, 666);
|
||||
},
|
||||
moveDuring() {
|
||||
clearTimeout(this.TIME_CUT_CENTER);
|
||||
},
|
||||
showLoading() {
|
||||
uni.showLoading({
|
||||
title: '请稍候...',
|
||||
mask: true
|
||||
});
|
||||
},
|
||||
stop() {},
|
||||
back() {
|
||||
uni.navigateBack();
|
||||
},
|
||||
angleChanged(val) {
|
||||
this.moveStop();
|
||||
if (val % 90) {
|
||||
this.angle = Math.round(val / 90) * 90;
|
||||
}
|
||||
this.angleChange++;
|
||||
this.props = `3,${this.angleChange}`;
|
||||
},
|
||||
setAngle() {
|
||||
this.animation = true;
|
||||
this.angle = this.angle + 90;
|
||||
this.angleChanged(this.angle);
|
||||
}
|
||||
}
|
||||
};
|
||||
</script>
|
||||
|
||||
<style scoped>
|
||||
.tui-cropper__box {
|
||||
width: 100vw;
|
||||
height: 100vh;
|
||||
background-color: rgba(0, 0, 0, 0.7);
|
||||
position: fixed;
|
||||
top: 0;
|
||||
left: 0;
|
||||
z-index: 1;
|
||||
}
|
||||
.tui-cropper__image {
|
||||
width: 100%;
|
||||
border-style: none;
|
||||
position: absolute;
|
||||
top: 0;
|
||||
left: 0;
|
||||
z-index: 2;
|
||||
-webkit-backface-visibility: hidden;
|
||||
backface-visibility: hidden;
|
||||
transform-origin: center;
|
||||
}
|
||||
|
||||
.tui-cropper__canvas {
|
||||
position: fixed;
|
||||
z-index: 10;
|
||||
left: -2000px;
|
||||
top: -2000px;
|
||||
pointer-events: none;
|
||||
}
|
||||
.tui-backdrop__cropper {
|
||||
position: fixed;
|
||||
z-index: 4;
|
||||
left: 50%;
|
||||
top: 50%;
|
||||
transform: translate(-50%, -50%);
|
||||
border: 3000px solid rgba(0, 0, 0, 0.55);
|
||||
pointer-events: none;
|
||||
}
|
||||
.tui-cropper__border {
|
||||
position: absolute;
|
||||
left: 0;
|
||||
top: 0;
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
box-sizing: border-box;
|
||||
pointer-events: none;
|
||||
}
|
||||
.tui-cropper__tabbar {
|
||||
width: 100%;
|
||||
height: 120rpx;
|
||||
padding: 0 40rpx;
|
||||
box-sizing: border-box;
|
||||
position: fixed;
|
||||
left: 0;
|
||||
bottom: 0;
|
||||
z-index: 99;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: space-between;
|
||||
color: #ffffff;
|
||||
font-size: 32rpx;
|
||||
}
|
||||
|
||||
.tui-cropper__tabbar::after {
|
||||
content: ' ';
|
||||
position: absolute;
|
||||
top: 0;
|
||||
right: 0;
|
||||
left: 0;
|
||||
border-top: 1rpx solid rgba(255, 255, 255, 0.2);
|
||||
-webkit-transform: scaleY(0.5) translateZ(0);
|
||||
transform: scaleY(0.5) translateZ(0);
|
||||
transform-origin: 0 100%;
|
||||
}
|
||||
|
||||
.tui-op__btn {
|
||||
height: 80rpx;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
}
|
||||
|
||||
.tui-rotate__img {
|
||||
width: 44rpx;
|
||||
height: 44rpx;
|
||||
}
|
||||
</style>
|
||||
@@ -0,0 +1,321 @@
|
||||
var cropper = {
|
||||
cutX: 0, //画布x轴起点
|
||||
cutY: 0, //画布y轴起点0
|
||||
touchRelative: [{
|
||||
x: 0,
|
||||
y: 0
|
||||
}], //手指或鼠标和图片中心的相对位置
|
||||
hypotenuseLength: 0, //双指触摸时斜边长度
|
||||
flagEndTouch: false, //是否结束触摸
|
||||
canvasWidth: 0,
|
||||
canvasHeight: 0,
|
||||
imgWidth: 0, //图片宽度
|
||||
imgHeight: 0, //图片高度
|
||||
scale: 1, //图片缩放比
|
||||
angle: 0, //图片旋转角度
|
||||
imgTop: 0, //图片上边距
|
||||
imgLeft: 0, //图片左边距
|
||||
windowHeight: 0,
|
||||
windowWidth: 0,
|
||||
init: true
|
||||
}
|
||||
|
||||
function bool(str) {
|
||||
return str === 'true' || str == true ? true : false
|
||||
}
|
||||
|
||||
function touchstart(e, ins) {
|
||||
var touch = e.touches || e.changedTouches;
|
||||
cropper.flagEndTouch = false;
|
||||
if (touch.length == 1) {
|
||||
cropper.touchRelative[0] = {
|
||||
x: touch[0].pageX - cropper.imgLeft,
|
||||
y: touch[0].pageY - cropper.imgTop
|
||||
};
|
||||
} else {
|
||||
var width = Math.abs(touch[0].pageX - touch[1].pageX);
|
||||
var height = Math.abs(touch[0].pageY - touch[1].pageY);
|
||||
cropper.touchRelative = [{
|
||||
x: touch[0].pageX - cropper.imgLeft,
|
||||
y: touch[0].pageY - cropper.imgTop
|
||||
},
|
||||
{
|
||||
x: touch[1].pageX - cropper.imgLeft,
|
||||
y: touch[1].pageY - cropper.imgTop
|
||||
}
|
||||
];
|
||||
cropper.hypotenuseLength = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
function moveDuring(ins) {
|
||||
if (!ins) return;
|
||||
ins.callMethod('moveDuring')
|
||||
}
|
||||
|
||||
function moveStop(ins) {
|
||||
if (!ins) return;
|
||||
ins.callMethod('moveStop')
|
||||
};
|
||||
|
||||
function setCutCenter(ins) {
|
||||
var cutY = (cropper.windowHeight - cropper.canvasHeight) * 0.5;
|
||||
var cutX = (cropper.windowWidth - cropper.canvasWidth) * 0.5;
|
||||
//顺序不能变
|
||||
cropper.imgTop = cropper.imgTop - cropper.cutY + cutY;
|
||||
cropper.cutY = cutY; //截取的框上边距
|
||||
cropper.imgLeft = cropper.imgLeft - cropper.cutX + cutX;
|
||||
cropper.cutX = cutX; //截取的框左边距
|
||||
cutDetectionPosition(ins)
|
||||
imgTransform(ins)
|
||||
updateData(ins)
|
||||
}
|
||||
|
||||
function touchmove(e, ins) {
|
||||
var touch = e.touches || e.changedTouches;
|
||||
if (cropper.flagEndTouch) return;
|
||||
moveDuring(ins);
|
||||
if (e.touches.length == 1) {
|
||||
var left = touch[0].pageX - cropper.touchRelative[0].x,
|
||||
top = touch[0].pageY - cropper.touchRelative[0].y;
|
||||
cropper.imgLeft = left;
|
||||
cropper.imgTop = top;
|
||||
imgTransform(ins);
|
||||
imgMarginDetectionPosition(ins);
|
||||
} else {
|
||||
var res = e.instance.getDataset();
|
||||
var minScale = +res.minscale;
|
||||
var maxScale = +res.maxscale;
|
||||
var width = Math.abs(touch[0].pageX - touch[1].pageX),
|
||||
height = Math.abs(touch[0].pageY - touch[1].pageY),
|
||||
hypotenuse = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2)),
|
||||
scale = cropper.scale * (hypotenuse / cropper.hypotenuseLength),
|
||||
current_deg = 0;
|
||||
scale = scale <= minScale ? minScale : scale;
|
||||
scale = scale >= maxScale ? maxScale : scale;
|
||||
cropper.scale = scale;
|
||||
imgMarginDetectionScale(ins, true);
|
||||
var touchRelative = [{
|
||||
x: touch[0].pageX - cropper.imgLeft,
|
||||
y: touch[0].pageY - cropper.imgTop
|
||||
},
|
||||
{
|
||||
x: touch[1].pageX - cropper.imgLeft,
|
||||
y: touch[1].pageY - cropper.imgTop
|
||||
}
|
||||
];
|
||||
cropper.touchRelative = touchRelative;
|
||||
cropper.hypotenuseLength = Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
|
||||
//更新视图
|
||||
cropper.angle = cropper.angle + current_deg;
|
||||
imgTransform(ins);
|
||||
}
|
||||
}
|
||||
|
||||
function touchend(e, ins) {
|
||||
cropper.flagEndTouch = true;
|
||||
moveStop(ins);
|
||||
updateData(ins)
|
||||
}
|
||||
|
||||
|
||||
//检测剪裁框位置是否在允许的范围内(屏幕内)
|
||||
function cutDetectionPosition(ins) {
|
||||
var windowHeight = cropper.windowHeight,
|
||||
windowWidth = cropper.windowWidth;
|
||||
|
||||
var cutDetectionPositionTop = function() {
|
||||
//检测上边距是否在范围内
|
||||
if (cropper.cutY < 0) {
|
||||
cropper.cutY = 0;
|
||||
}
|
||||
if (cropper.cutY > windowHeight - cropper.canvasHeight) {
|
||||
cropper.cutY = windowHeight - cropper.canvasHeight;
|
||||
}
|
||||
}
|
||||
|
||||
var cutDetectionPositionLeft = function() {
|
||||
//检测左边距是否在范围内
|
||||
if (cropper.cutX < 0) {
|
||||
cropper.cutX = 0;
|
||||
}
|
||||
if (cropper.cutX > windowWidth - cropper.canvasWidth) {
|
||||
cropper.cutX = windowWidth - cropper.canvasWidth;
|
||||
}
|
||||
}
|
||||
//裁剪框坐标处理（如果只写一个参数则另一个默认为0，都不写默认居中）
|
||||
if (cropper.cutY == null && cropper.cutX == null) {
|
||||
var cutY = (windowHeight - cropper.canvasHeight) * 0.5;
|
||||
var cutX = (windowWidth - cropper.canvasWidth) * 0.5;
|
||||
cropper.cutY = cutY; //截取的框上边距
|
||||
cropper.cutX = cutX; //截取的框左边距
|
||||
} else if (cropper.cutY != null && cropper.cutX != null) {
|
||||
cutDetectionPositionTop();
|
||||
cutDetectionPositionLeft();
|
||||
} else if (cropper.cutY != null && cropper.cutX == null) {
|
||||
cutDetectionPositionTop();
|
||||
cropper.cutX = (windowWidth - cropper.canvasWidth) / 2;
|
||||
} else if (cropper.cutY == null && cropper.cutX != null) {
|
||||
cutDetectionPositionLeft();
|
||||
cropper.cutY = (windowHeight - cropper.canvasHeight) / 2;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 图片边缘检测-缩放
|
||||
*/
|
||||
function imgMarginDetectionScale(ins, delay) {
|
||||
var scale = cropper.scale;
|
||||
var imgWidth = cropper.imgWidth;
|
||||
var imgHeight = cropper.imgHeight;
|
||||
if ((cropper.angle / 90) % 2) {
|
||||
imgWidth = cropper.imgHeight;
|
||||
imgHeight = cropper.imgWidth;
|
||||
}
|
||||
if (imgWidth * scale < cropper.canvasWidth) {
|
||||
scale = cropper.canvasWidth / imgWidth;
|
||||
}
|
||||
if (imgHeight * scale < cropper.canvasHeight) {
|
||||
scale = Math.max(scale, cropper.canvasHeight / imgHeight);
|
||||
}
|
||||
imgMarginDetectionPosition(ins, scale, delay);
|
||||
}
|
||||
/**
|
||||
* 图片边缘检测-位置
|
||||
*/
|
||||
function imgMarginDetectionPosition(ins, scale, delay) {
|
||||
var left = cropper.imgLeft;
|
||||
var top = cropper.imgTop;
|
||||
scale = scale || cropper.scale;
|
||||
var imgWidth = cropper.imgWidth;
|
||||
var imgHeight = cropper.imgHeight;
|
||||
if ((cropper.angle / 90) % 2) {
|
||||
imgWidth = cropper.imgHeight;
|
||||
imgHeight = cropper.imgWidth;
|
||||
}
|
||||
left = cropper.cutX + (imgWidth * scale) / 2 >= left ? left : cropper.cutX + (imgWidth * scale) / 2;
|
||||
left = cropper.cutX + cropper.canvasWidth - (imgWidth * scale) / 2 <= left ? left : cropper.cutX + cropper.canvasWidth -
|
||||
(imgWidth * scale) / 2;
|
||||
top = cropper.cutY + (imgHeight * scale) / 2 >= top ? top : cropper.cutY + (imgHeight * scale) / 2;
|
||||
top = cropper.cutY + cropper.canvasHeight - (imgHeight * scale) / 2 <= top ? top : cropper.cutY + cropper.canvasHeight -
|
||||
(imgHeight * scale) / 2;
|
||||
|
||||
cropper.imgLeft = left;
|
||||
cropper.imgTop = top;
|
||||
cropper.scale = scale;
|
||||
if (!delay || delay === 'null') {
|
||||
imgTransform(ins);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//改变截取框大小
|
||||
function computeCutSize(ins) {
|
||||
if (cropper.canvasWidth > cropper.windowWidth) {
|
||||
cropper.canvasWidth = cropper.windowWidth;
|
||||
} else if (cropper.canvasWidth + cropper.cutX > cropper.windowWidth) {
|
||||
cropper.cutX = cropper.windowWidth - cropper.cutX;
|
||||
}
|
||||
if (cropper.canvasHeight > cropper.windowHeight) {
|
||||
cropper.canvasHeight = cropper.windowHeight;
|
||||
} else if (cropper.canvasHeight + cropper.cutY > cropper.windowHeight) {
|
||||
cropper.cutY = cropper.windowHeight - cropper.cutY;
|
||||
}
|
||||
}
|
||||
|
||||
function imgTransform(ins) {
|
||||
var owner = ins.selectComponent('.tui-cropper__image')
|
||||
if (!owner) return
|
||||
var x = cropper.imgLeft - cropper.imgWidth / 2;
|
||||
var y = cropper.imgTop - cropper.imgHeight / 2;
|
||||
owner.setStyle({
|
||||
'transform': 'translate3d(' + x + 'px,' + y + 'px,0) scale(' + cropper.scale + ') rotate(' + cropper.angle + 'deg)'
|
||||
})
|
||||
}
|
||||
|
||||
function imageReset(ins) {
|
||||
cropper.scale = 1;
|
||||
cropper.angle = 0;
|
||||
imgTransform(ins);
|
||||
}
|
||||
//监听截取框宽高变化
|
||||
function canvasWidth(ins) {
|
||||
if (!ins) return;
|
||||
computeCutSize(ins);
|
||||
}
|
||||
|
||||
function canvasHeight(ins) {
|
||||
if (!ins) return;
|
||||
computeCutSize(ins);
|
||||
}
|
||||
|
||||
function updateData(ins) {
|
||||
if (!ins) return;
|
||||
ins.callMethod('change', {
|
||||
cutX: cropper.cutX,
|
||||
cutY: cropper.cutY,
|
||||
imgWidth: cropper.imgWidth,
|
||||
imgHeight: cropper.imgHeight,
|
||||
scale: cropper.scale,
|
||||
angle: cropper.angle,
|
||||
imgTop: cropper.imgTop,
|
||||
imgLeft: cropper.imgLeft
|
||||
})
|
||||
}
|
||||
|
||||
function propsChange(prop, oldProp, ownerInstance, ins) {
|
||||
if (prop && prop !== 'null') {
|
||||
var params = prop.split(',')
|
||||
var type = +params[0]
|
||||
var dataset = ins.getDataset();
|
||||
if (cropper.init || type == 4) {
|
||||
cropper.canvasWidth = +dataset.width;
|
||||
cropper.canvasHeight = +dataset.height;
|
||||
cropper.imgTop = dataset.windowheight / 2;
|
||||
cropper.imgLeft = dataset.windowwidth / 2;
|
||||
cropper.imgWidth = +dataset.imgwidth;
|
||||
cropper.imgHeight = +dataset.imgheight;
|
||||
cropper.windowHeight = +dataset.windowheight;
|
||||
cropper.windowWidth = +dataset.windowwidth;
|
||||
cropper.init = false
|
||||
} else if (type == 2 || type == 3) {
|
||||
cropper.imgWidth = +dataset.imgwidth;
|
||||
cropper.imgHeight = +dataset.imgheight;
|
||||
}
|
||||
cropper.angle = +dataset.angle;
|
||||
if (type == 3) {
|
||||
imgTransform(ownerInstance);
|
||||
}
|
||||
switch (type) {
|
||||
case 1:
|
||||
setCutCenter(ownerInstance);
|
||||
//设置裁剪框大小>设置图片尺寸>绘制canvas
|
||||
computeCutSize(ownerInstance);
|
||||
//检查裁剪框是否在范围内
|
||||
cutDetectionPosition(ownerInstance);
|
||||
break;
|
||||
case 2:
|
||||
setCutCenter(ownerInstance);
|
||||
break;
|
||||
case 3:
|
||||
imgMarginDetectionScale(ownerInstance)
|
||||
break;
|
||||
case 4:
|
||||
imageReset(ownerInstance);
|
||||
break;
|
||||
case 5:
|
||||
setCutCenter(ownerInstance);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
touchstart: touchstart,
|
||||
touchmove: touchmove,
|
||||
touchend: touchend,
|
||||
propsChange: propsChange
|
||||
}
|
||||
Reference in New Issue
Block a user