index.vue
3.14 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
<template>
<div :class="$attrs.class" :style="getWrapperStyle">
<img
v-show="isReady"
ref="imgElRef"
:src="src"
:alt="alt"
:crossorigin="crossorigin"
:style="getImageStyle"
/>
</div>
</template>
<script lang="ts">
import type { CSSProperties } from 'vue';
import { defineComponent, onMounted, ref, unref, computed } from 'vue';
import Cropper from 'cropperjs';
import 'cropperjs/dist/cropper.css';
type Options = Cropper.Options;
const defaultOptions: Cropper.Options = {
aspectRatio: 16 / 9,
zoomable: true,
zoomOnTouch: true,
zoomOnWheel: true,
cropBoxMovable: true,
cropBoxResizable: true,
toggleDragModeOnDblclick: true,
autoCrop: true,
background: true,
highlight: true,
center: true,
responsive: true,
restore: true,
checkCrossOrigin: true,
checkOrientation: true,
scalable: true,
modal: true,
guides: true,
movable: true,
rotatable: true,
};
export default defineComponent({
name: 'CropperImage',
props: {
src: {
type: String,
required: true,
},
alt: {
type: String,
},
height: {
type: [String, Number],
default: '360px',
},
crossorigin: {
type: String as PropType<'' | 'anonymous' | 'use-credentials' | undefined>,
default: undefined,
},
imageStyle: {
type: Object as PropType<CSSProperties>,
default: () => {},
},
options: {
type: Object as PropType<Options>,
default: () => {},
},
},
emits: ['cropperedInfo'],
setup(props, ctx) {
const imgElRef = ref<ElRef<HTMLImageElement>>(null);
const cropper: any = ref<Nullable<Cropper>>(null);
const isReady = ref(false);
const getImageStyle = computed(
(): CSSProperties => {
return {
height: props.height,
maxWidth: '100%',
...props.imageStyle,
};
}
);
const getWrapperStyle = computed(
(): CSSProperties => {
const { height } = props;
return { height: `${height}`.replace(/px/, '') + 'px' };
}
);
async function init() {
const imgEl = unref(imgElRef);
if (!imgEl) {
return;
}
cropper.value = new Cropper(imgEl, {
...defaultOptions,
ready: () => {
isReady.value = true;
},
...props.options,
});
}
// event: return base64 and width and height information after cropping
const croppered = (): void => {
let imgInfo = cropper.value.getData();
cropper.value.getCroppedCanvas().toBlob((blob) => {
let fileReader: FileReader = new FileReader();
fileReader.onloadend = (e: any) => {
ctx.emit('cropperedInfo', {
imgBase64: e.target.result,
imgInfo,
});
};
fileReader.readAsDataURL(blob);
}, 'image/jpeg');
};
onMounted(init);
return { imgElRef, getWrapperStyle, getImageStyle, isReady, croppered };
},
});
</script>