533 lines
15 KiB
Vue
533 lines
15 KiB
Vue
<template>
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<div class="generalMiniCanvas">
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<div class="addDetails_canvasCenter">
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<div class="generalMiniCanvas_btn generalMiniCanvas_item" :class="{spread:spreadState}">
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<!-- <div @click="setOperation('')" class="generalMiniCanvas_btn_item">
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<div>新增</div>
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</div> -->
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<i class="icon iconfont icon-chehui" @click="historyState('')"></i>
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<i class="icon iconfont icon-fanchehui" @click="historyState('reverse')"></i>
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<i class="icon iconfont icon-move" @click="setOperation('move')" :class="{active:canvasState == 'move'}"></i>
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<i class="icon iconfont icon-bianji" @click="setOperation('pencil')" :class="{active:canvasState == 'pencil'}"></i>
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<i class="icon iconfont icon-xiangpi_huaban1" @click="setOperation('eraser')" :class="{active:canvasState == 'eraser'}"></i>
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<input type="range" v-show="canvasState != 'move'" @input="setPencilWidth" min="1" max="50" v-model="canvasPencilWidth[canvasState]">
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<!-- <div class="icon iconfont icon-xiala" :class="{btnRotate:spreadState}" @click="()=>spreadState = !spreadState"></div> -->
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</div>
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<div class="exportCanvasBox_center_box">
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<div class="exportCanvasBox_center">
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<!-- <div class="editFrontBack_bgImg" v-show="loadingShow">
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<img :src="imgData?.undividedLayer" alt="">
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</div> -->
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</div>
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<div class="editFrontBack_pencilbtn" v-show="loadingShow" :style="pencilbtnStyle"></div>
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</div>
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</div>
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<div class="exportCanvasBox_submit" @click="setSubmit">
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<div class="started_btn">
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{{ $t('addDetails.submit') }}
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</div>
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</div>
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</div>
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</template>
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<script>
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import { defineComponent, ref, reactive, watch, onMounted, onBeforeUnmount, nextTick, toRefs } from "vue";
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import { Https } from "@/tool/https";
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import { formatTime } from "@/tool/util";
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import { setCookie, getCookie } from "@/tool/cookie";
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import { Modal, message } from "ant-design-vue";
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import { ExclamationCircleOutlined } from "@ant-design/icons-vue";
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import allOrder from "@/component/Pay/allOrder.vue";
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import creditsDetail from "@/component/Pay/creditsDetail.vue";
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import { exportSele,JSRectUpdata,JSchangeType,JScanvasMouseDown,JSSetRemoveImage,JScreateCheck,JSSetTexture } from "@/tool/canvasDrawing";
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import { useI18n } from "vue-i18n";
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import canvasGeneral from "@/tool/canvasGeneral";
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import { getMousePosition } from "@/tool/mdEvent";
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export default defineComponent({
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components: {
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creditsDetail,
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allOrder,
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},
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emits: ['submitBase64Data'],
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props: {
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imgUrl: {
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type: String,
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default: ''
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},
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},
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// watch: {
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// // imgUrl: function(newVal, oldVal) {
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// // console.log(newVal);
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// // // 当propertyName数据发生变化时，执行相应的操作
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// // }
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// imgUrl(newVal, oldVal) {
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// console.log(`imgUrl changed from ${oldVal} to ${newVal}`);
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// },
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// },
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setup(props,{emit}) {
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let presentState = ref('paypal');
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let showPayOrder = ref(false);
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let loadingShow = ref(false);
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let { t } = useI18n();
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let canvas = reactive({});
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let scale = 2;
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let ratio = [1,1]
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let exportWH = 512
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let pencilbtnStyle = ref({
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background:'',
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width:0+'px',
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height:0+'px',
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display:'none',
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left:0+'px',
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top:0+'px',
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})
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let canvasBtn = reactive({
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canvasState:'move',
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canvasPencilWidth:{
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pencil:20,
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eraser:20,
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},
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spreadState:false,
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})
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let canvasWH = ref(0);
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watch(
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() => props.imgUrl,
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(newValue, oldValue) => {
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init()
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})
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onMounted(()=>{
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init()
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})
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onBeforeUnmount(()=>{
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canvasGeneral.canvasClear()
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})
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let reverseCanvasState = ref([])//存放canvas操作
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let normalCanvasState = ref([])//存放canvas操作
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let canvasState = ref()//存放canvas操作
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let keyDown = []//监听键盘的 keydown 和 keyup 事件
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let init = ()=>{
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normalCanvasState.value = []
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reverseCanvasState.value = []
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showPayOrder.value = true;
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ratio = [1,1]
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nextTick(()=>{
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let canvasBox = document.querySelector(".generalMiniCanvas .exportCanvasBox_center");
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document.removeEventListener('mousemove', mouseMove);
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document.removeEventListener('touchmove', touchmove);
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let img = new Image();
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img.onload = function(){
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loadingShow.value = true
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let height = canvasBox.offsetHeight;
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canvasWH.value = height
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// canvasBox.style.width = height+'px'
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let wScale = 1
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let hScale = 1
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if(img.width>img.height){
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hScale = img.height/img.width
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exportWH = img.width
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}else{
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wScale = img.width/img.height
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exportWH = img.height
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}
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ratio = [wScale,hScale]
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canvas = canvasGeneral.canvasInit(canvasBox,{
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width:canvasWH.value * wScale,
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height:canvasWH.value * hScale,
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})
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scale = img.height/canvas.height
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pencilbtnStyle.value.background = rgba
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fabric.Object.prototype.cornerSize = 10
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fabric.Object.prototype.transparentCorners = false
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fabric.Image.fromURL(props.imgUrl, function(img) {
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// 设置背景图对象的宽度和高度与 canvas 相同
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img.scaleToWidth(canvas.width);
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img.scaleToHeight(canvas.height);
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img.set({
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scaleX: canvas.width / img.width,
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scaleY: canvas.height / img.height
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});
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// 将背景图添加到 canvas 的底层
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canvas.setBackgroundImage(img, canvas.renderAll.bind(canvas));
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if(!fabric.Object.prototype.controls.deleteControl){
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JSSetRemoveImage(deleteObj)
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}else{
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fabric.Object.prototype.controls.deleteControl.mouseUpHandler = deleteObj
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}
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setPencilWidth()
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updateCanvasState()
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},{ crossOrigin: "Anonymous" });
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// 鼠标抬起事件
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canvas.on('mouse:up', function(event) {
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if(canvasBtn.canvasState != 'move'){
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updateCanvasState('mouseUp')
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}
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});
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canvas.on('mouse:wheel', opt => {
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const delta = opt.e.deltaY // 滚轮，向上滚一下是 -100，向下滚一下是 100
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let zoom = canvas.getZoom() // 获取画布当前缩放值
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zoom *= 0.999 ** delta
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if (zoom > 20) zoom = 20
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if (zoom < 0.01) zoom = 0.01
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// console.log(zoom);
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canvas.zoomToPoint(
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{ // 关键点
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x: opt.e.offsetX,
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y: opt.e.offsetY
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},
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zoom
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)
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opt.e.preventDefault()
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opt.e.stopPropagation()
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})
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//画布上移动
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document.addEventListener('mousemove', mouseMove);
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document.addEventListener('touchmove', touchmove);
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setOperation('pencil')
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img.remove()
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}
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img.src = props.imgUrl
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})
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}
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let canvasKeyDown = (event) => {
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if(keyDown.indexOf(event.key)>-1){
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}else{
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keyDown.push(event.code)
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if(keyDown.indexOf('ControlLeft') > -1 && keyDown.indexOf('KeyZ') > -1 && keyDown.indexOf('ShiftLeft') > -1){
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historyState('reverse')
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}else if(keyDown.indexOf('ControlLeft') > -1 && keyDown.indexOf('KeyZ') > -1){
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historyState('')
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}
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}
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}
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let canvasKeyUp = (event) =>{
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keyDown = keyDown.filter(function(item) {
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return event.code !== item;
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})
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}
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let clearCanvas = ()=>{
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canvasBtn.canvasState = 'move'
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canvasBtn.spreadState = false
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document.removeEventListener("keydown", canvasKeyDown);
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document.removeEventListener("keyup", canvasKeyUp);
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}
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let rgba = 'rgba(0, 0, 0, 1)'
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let mouseMove = (event)=>{
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let e = getMousePosition(event,false)
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setCanvasMove(e)
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}
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let touchmove = (event)=>{
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let e = getMousePosition(event,true)
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setCanvasMove(e)
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}
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let setCanvasMove = (event)=>{
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if(canvas.isDrawingMode){
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canvas.setCursor('none');
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}
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let canvasCenterBox = document.querySelector(".generalMiniCanvas .exportCanvasBox_center_box");
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if(!canvasCenterBox)return
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let parentX = event.clientX - canvasCenterBox.getBoundingClientRect().left
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let parentY = event.clientY - canvasCenterBox.getBoundingClientRect().top
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pencilbtnStyle.value.left = parentX + "px"
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pencilbtnStyle.value.top = parentY+'px'
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}
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let setOperation = (str)=>{
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canvasBtn.canvasState = str
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if(str == 'move'){
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setMove()
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pencilbtnStyle.value.display = `none`
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}else if(str == 'pencil'){
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setPencil()
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pencilbtnStyle.value.display = `block`
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}else if(str == 'eraser'){
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setEraser()
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pencilbtnStyle.value.display = `block`
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}
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}
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let setMove = ()=>{
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canvas.isDrawingMode = false
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canvas.forEachObject((obj) =>obj.selectable = true);
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}
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let setPencil = ()=>{
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canvas.isDrawingMode = true//开启绘画模式
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canvas.freeDrawingBrush = new fabric.PencilBrush(canvas,{});
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canvas.freeDrawingBrush.width = Number(canvasBtn.canvasPencilWidth[canvasBtn.canvasState]);
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canvas.freeDrawingBrush.color = rgba
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pencilbtnStyle.value.background = rgba
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canvas.freeDrawingBrush.isEraser = false
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setPencilWidth()
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}
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let setEraser = ()=>{
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canvas.isDrawingMode = true
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let eraser = new fabric.EraserBrush(canvas)
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canvas.freeDrawingBrush = eraser
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canvas.requestRenderAll();
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canvas.freeDrawingBrush.isEraser = true
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pencilbtnStyle.value.background = `rgb(255,255,255)`
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canvas.freeDrawingBrush.width = Number(canvasBtn.canvasPencilWidth[canvasBtn.canvasState]);
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setPencilWidth()
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}
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let deleteObj = ()=> {
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// if(!canvas.getActiveObjects()){
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// return
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// }
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let target = canvas.getActiveObjects()
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target.forEach((item)=>{
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canvas.fxRemove(item, {
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onComplete(){
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canvas.discardActiveObject(); // 丢弃当前选中的对象
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canvas.renderAll(); // 重新渲染 Canvas
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}
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})
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canvas.FX_DURATION = 300
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})
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}
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let setTimeOutWidth
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let setPencilWidth = ()=>{//切换颜色给铅笔设置颜色
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clearTimeout(setTimeOutWidth)
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setTimeOutWidth = setTimeout(()=>{
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canvas.freeDrawingBrush.width = Number(canvasBtn.canvasPencilWidth[canvasBtn.canvasState])
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pencilbtnStyle.value.height = canvasBtn.canvasPencilWidth[canvasBtn.canvasState]+'px'
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pencilbtnStyle.value.width = canvasBtn.canvasPencilWidth[canvasBtn.canvasState]+'px'
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},300)
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}
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let updateCanvasState = (str) =>{
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if(str != 'mouseUp'){
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}
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const canvasAsJson = JSON.stringify(canvas.toJSON());
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normalCanvasState.value.push(canvasAsJson);
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}
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//撤回
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let historyState = (str)=> {
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if(str == 'reverse' && reverseCanvasState.value.length > 0){//反撤回
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let obj = reverseCanvasState.value.pop()
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// canvasState.value = reverseCanvasState.value[reverseCanvasState.value.length-1]
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canvasState.value = obj
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normalCanvasState.value.push(obj);
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}else if(str == '' && normalCanvasState.value.length > 1){
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let obj = normalCanvasState.value.pop()
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canvasState.value = normalCanvasState.value[normalCanvasState.value.length-1]
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reverseCanvasState.value.push(obj);
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}else{
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return
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}
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canvas.loadFromJSON(canvasState.value, () => {});
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}
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let setSubmit = ()=>{
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var allObjects = canvas.getObjects('path');
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// if(allObjects.length == 0){
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// return message.info(t('addDetails.jsContent1'))
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// }
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var canvasDom = document.createElement("canvas");
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let exportCanvas = new fabric.Canvas(canvasDom, {
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backgroundColor: "rgba(255, 255, 255,1)",
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width: exportWH * ratio[0],
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height: exportWH * ratio[1],
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isDrawingMode: false, // 开启绘图模式
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});
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canvas.backgroundImage.clone((back)=>{
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back.set({
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scaleX:1,
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scaleY:1,
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left:back.left*scale,
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top:back.top*scale ,
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})
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exportCanvas.backgroundImage = back
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allObjects.forEach((item,index)=>{
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// let obj = fabric.util.object.clone(item);
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if(item.type == 'circle')return
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let obj
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item.clone((cloned)=>{
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obj = cloned
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})
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obj.set(
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{
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scaleX:(item.scaleX?item.scaleX:1)*scale,
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scaleY:(item.scaleY?item.scaleY:1)*scale,
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left:item.left*scale,
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top:item.top*scale,
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}
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)
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exportCanvas.add(obj)
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})
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let data = exportCanvas.toDataURL('jpg')
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cancelDsign()
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clearCanvas()
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emit('submitBase64Data',data)
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})
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}
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let cancelDsign = ()=>{
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document.removeEventListener('keydown',canvasKeyDown);
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document.removeEventListener('keyup', canvasKeyUp);
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showPayOrder.value = false
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}
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return {
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presentState,
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showPayOrder,
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loadingShow,
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t,
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pencilbtnStyle,
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...toRefs(canvasBtn),
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init,
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setOperation,
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setPencilWidth,
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historyState,
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setSubmit,
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cancelDsign,
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};
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},
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data() {
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return {
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};
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},
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mounted() {},
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methods: {
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},
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});
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</script>
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<style lang="less">
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.generalMiniCanvas{
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position: relative;
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// width: calc(512px / 2);
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// width: 256px;
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height: 100%;
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display: flex;
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flex-direction: column;
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// height: calc(512px / 2);
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margin: 0 auto;
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.generalMiniCanvas_item{
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// position: relative;
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background: #fff;
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position: absolute;
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display: flex;
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border: 0.2rem solid #c4c4c4;
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width: 25rem;
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border-radius: 4px; /* 设置圆角半径 */
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flex-wrap: wrap;
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.generalMiniCanvas_btn_item{
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display: flex;
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align-items: center;
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padding: 1rem 0;
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}
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}
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.generalMiniCanvas_btn{
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z-index: 2;
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// left: 50%;
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min-width: 45rem;
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// transform: translate(-50%,-135%);
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// transition: all .3s;
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padding: 1rem 1.5rem;
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// transform: translate(-50%,0);
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position: relative;
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width: 100%;
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flex-direction: row;
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input{
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// width: 100%;
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// margin-top: 1rem;
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flex: 1;
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}
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.icon-xiala{
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position: absolute;
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width: 2rem;
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bottom: 0;
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transform: translate(-50%, 90%);
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left: 50%;
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width: 6rem;
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background: #fff;
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text-align: center;
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cursor: pointer;
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&.icon-xiala::before{
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transition: all .3s;
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}
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&.btnRotate::before{
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transform: rotate(180deg);
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display: block;
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}
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}
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i{
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font-size: 2.5rem;
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cursor: pointer;
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width: 4rem;
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height: 4rem;
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display: flex;
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align-items: center;
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justify-content: center;
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&.active{
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border: 1px solid;
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border-radius: .4rem;
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}
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}
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&.spread{
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transform: translate(-50%,0);
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}
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}
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.addDetails_canvasCenter{
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flex: 1;
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overflow: hidden;
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display: flex;
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flex-direction: column;
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position: relative;
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margin: 0 auto;
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}
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.exportCanvasBox_center_box{
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padding: 3rem;
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height: 100%;
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flex: 1;
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position: relative;
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overflow: hidden;
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width: 100%;
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background: #e6e6e6;
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&:hover{
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cursor: none;
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}
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.editFrontBack_pencilbtn{
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position: absolute;
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z-index: 1;
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border-radius: 50%;
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border: 1px solid #000;
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pointer-events: none;
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transform: translate(-50%,-50%);
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}
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}
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.exportCanvasBox_center{
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height: 100%;
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flex: 1;
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position: relative;
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overflow: hidden;
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background: #e6e6e6;
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// overflow: scroll;
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.canvas-container{
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left: 50%;
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top: 50%;
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transform: translate(-50%,-50%);
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}
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.editFrontBack_pencilbtn{
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position: absolute;
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z-index: 1;
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border-radius: 50%;
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border: 1px solid #000;
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pointer-events: none;
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transform: translate(-50%,-50%);
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}
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}
|
||
.exportCanvasBox_center:hover{
|
||
.generalMiniCanvas_btn{
|
||
// transform: translate(-50%,-101%);
|
||
// &.spread{
|
||
// transform: translate(-50%,0);
|
||
// }
|
||
}
|
||
}
|
||
}
|
||
.exportCanvasBox_submit{
|
||
margin-top: 1rem;
|
||
text-align: center;
|
||
}
|
||
</style> |