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@@ -638,7 +638,7 @@ const copyAnno = (idPath: string, fileName: string, pdf: any) => {
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const getCaptureCanvas = async (pdfObj: any, pageNumber: number) => {
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const pdfPage = await pdfObj.pdfDocument.getPage(pageNumber);
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- const viewport = pdfPage.getViewport({scale: window.devicePixelRatio || 1});
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+ const viewport = pdfPage.getViewport({scale: 2}); // 不使用 window.devicePixelRatio 否则 window 下画质不够
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const canvas = document.createElement("canvas");
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canvas.width = Math.floor(viewport.width);
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canvas.height = Math.floor(viewport.height);
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@@ -660,7 +660,7 @@ async function getRectImgData(pdfObj: any) {
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const captureCanvas = await getCaptureCanvas(pdfObj, parseInt(pageElement.getAttribute("data-page-number")));
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const rectStyle = (rectElement.firstElementChild as HTMLElement).style;
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- const scale = (window.devicePixelRatio || 1) / pdfObj.pdfViewer.currentScale / window.pdfjsLib.PixelsPerInch.PDF_TO_CSS_UNITS;
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+ const scale = 2 / pdfObj.pdfViewer.currentScale / window.pdfjsLib.PixelsPerInch.PDF_TO_CSS_UNITS;
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const captureImageData = captureCanvas.getContext("2d").getImageData(
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scale * parseFloat(rectStyle.left),
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scale * parseFloat(rectStyle.top),
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Vanessa