| 提交 | 用户 | 时间 | ||
| 314507 | 1 | <template> |
| H | 2 | <div :class="getClass" :style="getWrapperStyle"> |
| 3 | <img | |
| 4 | v-show="isReady" | |
| 5 | ref="imgElRef" | |
| 6 | :alt="alt" | |
| 7 | :crossorigin="crossorigin" | |
| 8 | :src="src" | |
| 9 | :style="getImageStyle" | |
| 10 | /> | |
| 11 | </div> | |
| 12 | </template> | |
| 13 | <script lang="ts" setup> | |
| 14 | import { CSSProperties, PropType } from 'vue' | |
| 15 | import Cropper from 'cropperjs' | |
| 16 | import 'cropperjs/dist/cropper.css' | |
| 17 | import { useDesign } from '@/hooks/web/useDesign' | |
| 18 | import { propTypes } from '@/utils/propTypes' | |
| 19 | import { useDebounceFn } from '@vueuse/core' | |
| 20 | ||
| 21 | defineOptions({ name: 'Cropper' }) | |
| 22 | ||
| 23 | type Options = Cropper.Options | |
| 24 | ||
| 25 | const defaultOptions: Options = { | |
| 26 | aspectRatio: 1, | |
| 27 | zoomable: true, | |
| 28 | zoomOnTouch: true, | |
| 29 | zoomOnWheel: true, | |
| 30 | cropBoxMovable: true, | |
| 31 | cropBoxResizable: true, | |
| 32 | toggleDragModeOnDblclick: true, | |
| 33 | autoCrop: true, | |
| 34 | background: true, | |
| 35 | highlight: true, | |
| 36 | center: true, | |
| 37 | responsive: true, | |
| 38 | restore: true, | |
| 39 | checkCrossOrigin: true, | |
| 40 | checkOrientation: true, | |
| 41 | scalable: true, | |
| 42 | modal: true, | |
| 43 | guides: true, | |
| 44 | movable: true, | |
| 45 | rotatable: true | |
| 46 | } | |
| 47 | ||
| 48 | const props = defineProps({ | |
| 49 | src: propTypes.string.def(''), | |
| 50 | alt: propTypes.string.def(''), | |
| 51 | circled: propTypes.bool.def(false), | |
| 52 | realTimePreview: propTypes.bool.def(true), | |
| 53 | height: propTypes.string.def('360px'), | |
| 54 | crossorigin: { | |
| 55 | type: String as PropType<'' | 'anonymous' | 'use-credentials' | undefined>, | |
| 56 | default: undefined | |
| 57 | }, | |
| 58 | imageStyle: { type: Object as PropType<CSSProperties>, default: () => ({}) }, | |
| 59 | options: { type: Object as PropType<Options>, default: () => ({}) } | |
| 60 | }) | |
| 61 | ||
| 62 | const emit = defineEmits(['cropend', 'ready', 'cropendError']) | |
| 63 | const attrs = useAttrs() | |
| 64 | const imgElRef = ref<ElRef<HTMLImageElement>>() | |
| 65 | const cropper = ref<Nullable<Cropper>>() | |
| 66 | const isReady = ref(false) | |
| 67 | ||
| 68 | const { getPrefixCls } = useDesign() | |
| 69 | const prefixCls = getPrefixCls('cropper-image') | |
| 70 | const debounceRealTimeCroppered = useDebounceFn(realTimeCroppered, 80) | |
| 71 | ||
| 72 | const getImageStyle = computed((): CSSProperties => { | |
| 73 | return { | |
| 74 | height: props.height, | |
| 75 | maxWidth: '100%', | |
| 76 | ...props.imageStyle | |
| 77 | } | |
| 78 | }) | |
| 79 | ||
| 80 | const getClass = computed(() => { | |
| 81 | return [ | |
| 82 | prefixCls, | |
| 83 | attrs.class, | |
| 84 | { | |
| 85 | [`${prefixCls}--circled`]: props.circled | |
| 86 | } | |
| 87 | ] | |
| 88 | }) | |
| 89 | const getWrapperStyle = computed((): CSSProperties => { | |
| 90 | return { height: `${props.height}`.replace(/px/, '') + 'px' } | |
| 91 | }) | |
| 92 | ||
| 93 | onMounted(init) | |
| 94 | ||
| 95 | onUnmounted(() => { | |
| 96 | cropper.value?.destroy() | |
| 97 | }) | |
| 98 | ||
| 99 | async function init() { | |
| 100 | const imgEl = unref(imgElRef) | |
| 101 | if (!imgEl) { | |
| 102 | return | |
| 103 | } | |
| 104 | cropper.value = new Cropper(imgEl, { | |
| 105 | ...defaultOptions, | |
| 106 | ready: () => { | |
| 107 | isReady.value = true | |
| 108 | realTimeCroppered() | |
| 109 | emit('ready', cropper.value) | |
| 110 | }, | |
| 111 | crop() { | |
| 112 | debounceRealTimeCroppered() | |
| 113 | }, | |
| 114 | zoom() { | |
| 115 | debounceRealTimeCroppered() | |
| 116 | }, | |
| 117 | cropmove() { | |
| 118 | debounceRealTimeCroppered() | |
| 119 | }, | |
| 120 | ...props.options | |
| 121 | }) | |
| 122 | } | |
| 123 | ||
| 124 | // Real-time display preview | |
| 125 | function realTimeCroppered() { | |
| 126 | props.realTimePreview && croppered() | |
| 127 | } | |
| 128 | ||
| 129 | // event: return base64 and width and height information after cropping | |
| 130 | function croppered() { | |
| 131 | if (!cropper.value) { | |
| 132 | return | |
| 133 | } | |
| 134 | let imgInfo = cropper.value.getData() | |
| 135 | const canvas = props.circled ? getRoundedCanvas() : cropper.value.getCroppedCanvas() | |
| 136 | canvas.toBlob((blob) => { | |
| 137 | if (!blob) { | |
| 138 | return | |
| 139 | } | |
| 140 | let fileReader: FileReader = new FileReader() | |
| 141 | fileReader.readAsDataURL(blob) | |
| 142 | fileReader.onloadend = (e) => { | |
| 143 | emit('cropend', { | |
| 144 | imgBase64: e.target?.result ?? '', | |
| 145 | imgInfo | |
| 146 | }) | |
| 147 | } | |
| 148 | fileReader.onerror = () => { | |
| 149 | emit('cropendError') | |
| 150 | } | |
| 151 | }, 'image/png') | |
| 152 | } | |
| 153 | ||
| 154 | // Get a circular picture canvas | |
| 155 | function getRoundedCanvas() { | |
| 156 | const sourceCanvas = cropper.value!.getCroppedCanvas() | |
| 157 | const canvas = document.createElement('canvas') | |
| 158 | const context = canvas.getContext('2d')! | |
| 159 | const width = sourceCanvas.width | |
| 160 | const height = sourceCanvas.height | |
| 161 | canvas.width = width | |
| 162 | canvas.height = height | |
| 163 | context.imageSmoothingEnabled = true | |
| 164 | context.drawImage(sourceCanvas, 0, 0, width, height) | |
| 165 | context.globalCompositeOperation = 'destination-in' | |
| 166 | context.beginPath() | |
| 167 | context.arc(width / 2, height / 2, Math.min(width, height) / 2, 0, 2 * Math.PI, true) | |
| 168 | context.fill() | |
| 169 | return canvas | |
| 170 | } | |
| 171 | </script> | |
| 172 | <style lang="scss"> | |
| 173 | $prefix-cls: #{$namespace}-cropper-image; | |
| 174 | ||
| 175 | .#{$prefix-cls} { | |
| 176 | &--circled { | |
| 177 | .cropper-view-box, | |
| 178 | .cropper-face { | |
| 179 | border-radius: 50%; | |
| 180 | } | |
| 181 | } | |
| 182 | } | |
| 183 | </style> | |
