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87 changes: 55 additions & 32 deletions
87
packages/frontend/component/src/components/attachment-viewer/utils.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,40 +1,63 @@ | ||
| import { fileTypeFromBuffer } from 'file-type'; | ||
| import type { AttachmentBlockModel } from '@blocksuite/affine/blocks'; | ||
|
|
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| export async function saveBufferToFile(url: string, filename: string) { | ||
| // given input url may not have correct mime type | ||
| const blob = await attachmentUrlToBlob(url); | ||
| if (!blob) { | ||
| return; | ||
| export async function getAttachmentBlob(model: AttachmentBlockModel) { | ||
| const sourceId = model.sourceId; | ||
| if (!sourceId) { | ||
| return null; | ||
| } | ||
|
|
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| const blobUrl = URL.createObjectURL(blob); | ||
| const a = document.createElement('a'); | ||
| a.href = blobUrl; | ||
| a.download = filename; | ||
| document.body.append(a); | ||
| a.click(); | ||
| a.remove(); | ||
| URL.revokeObjectURL(blobUrl); | ||
| } | ||
|
|
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| export async function attachmentUrlToBlob( | ||
| url: string | ||
| ): Promise<Blob | undefined> { | ||
| const buffer = await fetch(url).then(response => response.arrayBuffer()); | ||
| const doc = model.doc; | ||
| let blob = await doc.blobSync.get(sourceId); | ||
|
|
||
| if (!buffer) { | ||
| console.warn('Could not get blob'); | ||
| return; | ||
| if (blob) { | ||
| blob = new Blob([blob], { type: model.type }); | ||
| } | ||
| try { | ||
| const type = await fileTypeFromBuffer(buffer); | ||
| if (!type) { | ||
|
|
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| return blob; | ||
| } | ||
|
|
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| export function download(model: AttachmentBlockModel) { | ||
| (async () => { | ||
| const blob = await getAttachmentBlob(model); | ||
| if (!blob) { | ||
| return; | ||
| } | ||
| const blob = new Blob([buffer], { type: type.mime }); | ||
| return blob; | ||
| } catch (error) { | ||
| console.error('Error converting attachment to blob', error); | ||
| } | ||
| return; | ||
|
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| const blobUrl = URL.createObjectURL(blob); | ||
| const a = document.createElement('a'); | ||
| a.href = blobUrl; | ||
| a.download = model.name; | ||
| document.body.append(a); | ||
| a.click(); | ||
| a.remove(); | ||
| URL.revokeObjectURL(blobUrl); | ||
| })().catch(console.error); | ||
| } | ||
|
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||
| export function renderItem( | ||
| scroller: HTMLElement | null, | ||
| id: number, | ||
| imageBitmap: ImageBitmap | ||
| ) { | ||
| if (!scroller) return; | ||
|
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| const wrapper = scroller.querySelector(`[data-index="${id}"]`); | ||
| if (!wrapper) return; | ||
|
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| const item = wrapper.firstElementChild; | ||
| if (!item) return; | ||
| if (item.firstElementChild) return; | ||
|
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| const canvas = document.createElement('canvas'); | ||
| const ctx = canvas.getContext('bitmaprenderer'); | ||
| if (!ctx) return; | ||
|
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| canvas.width = imageBitmap.width; | ||
| canvas.height = imageBitmap.height; | ||
| canvas.style.width = '100%'; | ||
| canvas.style.height = '100%'; | ||
|
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| ctx.transferFromImageBitmap(imageBitmap); | ||
|
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| item.append(canvas); | ||
| } |
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