107 lines
2.5 KiB
Vue
107 lines
2.5 KiB
Vue
<template>
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<view style="width: 345px;height:336px;background-color: #ffffff;border-radius: 10rpx;">
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<canvas style="width: 100%;height: 100%;" canvas-id="canvas" id="canvas"></canvas>
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<view>
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<u-button @click="save" type="primary">保存海报</u-button>
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</view>
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</view>
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</template>
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<script>
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let self;
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export default {
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props: {
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qrcode: {
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type: String,
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default: ''
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},
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},
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data() {
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return {
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screenWidth: 345,
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screenHeight: 336
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}
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},
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created() {
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self = this;
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// uni.getSystemInfo({
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// success: (res) => {
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// self.screenWidth = res.windowWidth - 30; // 屏幕宽度，单位为px
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// self.screenHeight = res.windowHeight; // 屏幕高度，单位为px
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// },
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// });
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self.draw();
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},
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methods: {
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getImageInfo(src) {
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return new Promise((resolve, reject) => {
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uni.getImageInfo({
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src,
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success: res => {
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resolve(res)
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},
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fail: err => {
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reject(err)
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}
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})
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})
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},
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async draw() {
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const ctx = uni.createCanvasContext('canvas');
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// 绘制图片1
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const image1 = await this.getImageInfo('https://xingdong-app.oss-cn-beijing.aliyuncs.com/share.png')
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let x = image1.width / 2;
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let y = image1.height / 2;
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ctx.drawImage(image1.path, 0, 0, x, y);
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// 绘制图片2
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const image2 = await this.getImageInfo(
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self.$store.state.auth.user.qrcode
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);
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ctx.drawImage(image2.path, x / 2 - 96, 90, 190, 190);
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ctx.font = '16px Regular'; // 字体大小
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ctx.fillStyle = '#1449AE'; // 字体填充颜色
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let invite_code = '邀请码：' + self.$store.state.auth.user.invite_code;
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ctx.fillText(invite_code, x / 2 - 90, 36);
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ctx.font = '14px Regular'; // 字体大小
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ctx.fillStyle = '#999999'; // 字体填充颜色
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ctx.fillText('欢迎加入羿充电', x / 2 - 70, 60);
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ctx.font = '14px Regular'; // 字体大小
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ctx.fillStyle = '#999999'; // 字体填充颜色
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ctx.fillText('长按保存或转发', x / 2 - 48, y - 28);
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setTimeout(function() { // uni-app必须加上延迟，不然显示不出来， 亲测
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ctx.stroke();
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ctx.draw() //必须加上 uniapp 没这儿玩意儿 显示不出来不比原生 不加可以显示
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}, 300);
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},
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save() {
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// uni.canvasToTempFilePath({
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// canvasId: 'canvas',
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// success: res => {
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// uni.saveImageToPhotosAlbum({
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// filePath: res.tempFilePath,
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// success(res) {
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// }
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// })
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// }
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// })
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}
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}
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}
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</script>
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<style lang="scss">
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</style> |