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109 lines
2.7 KiB
Svelte
109 lines
2.7 KiB
Svelte
<!--
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// Copyright © 2020, 2021 Anticrm Platform Contributors.
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//
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// Licensed under the Eclipse Public License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License. You may
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// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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//
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// See the License for the specific language governing permissions and
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// limitations under the License.
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-->
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<script lang="ts">
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import Cropper from 'cropperjs'
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import smartcrop from 'smartcrop'
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export let image: Blob
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export let cropSize = 1200
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let imgRef: HTMLImageElement
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let cropper: Cropper | undefined
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async function init (image: Blob) {
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const bitmap = await createImageBitmap(image)
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const canvas = document.createElement('canvas')
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canvas.height = bitmap.height
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canvas.width = bitmap.width
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const ctx = canvas.getContext('2d')
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if (ctx == null) {
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return
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}
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ctx.drawImage(bitmap, 0, 0)
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imgRef.src = canvas.toDataURL('image/jpeg', 1.0)
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imgRef.width = bitmap.width
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imgRef.height = bitmap.height
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const initialArea = (await smartcrop.crop(canvas, { width: 100, height: 100 })).topCrop
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if (cropper !== undefined) {
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cropper.destroy()
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cropper = undefined
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}
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const cropperInst = new Cropper(imgRef, {
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aspectRatio: 1,
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viewMode: 1,
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autoCrop: true,
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rotatable: false,
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ready: () => {
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const imgData = cropperInst.getImageData()
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const xC = imgData.width / bitmap.width
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const yC = imgData.height / bitmap.height
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cropperInst.setCropBoxData({
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left: initialArea.x * xC,
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top: initialArea.y * yC,
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height: initialArea.height * yC,
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width: initialArea.width * yC
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})
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cropper = cropperInst
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}
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})
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}
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export async function crop () {
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if (cropper === undefined) {
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return
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}
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const res = cropper.getCroppedCanvas({ maxWidth: cropSize, maxHeight: cropSize, imageSmoothingQuality: 'high' })
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return await new Promise((resolve) => {
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res.toBlob(
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(blob) => {
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resolve(blob)
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},
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'image/jpeg',
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0.95
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)
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})
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}
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</script>
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<div class="w-full h-full flex">
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<img class="image" bind:this={imgRef} alt="img" />
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{#await init(image)}
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Waiting...
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{/await}
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</div>
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<style lang="scss">
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@import 'cropperjs/dist/cropper.min.css';
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:global(.cropper-view-box, .cropper-face) {
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border-radius: 50%;
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}
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.image {
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max-width: 100%;
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object-fit: contain;
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display: none;
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}
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</style>
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