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Merge pull request #14149 from mikemando/path-1

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Convert examples/learning/helloworld64.html to await/async
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Jonas Jenwald 2021-10-15 22:35:31 +02:00 committed by GitHub
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1 changed files with 25 additions and 25 deletions
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examples/learning/helloworld64.html
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@ -40,36 +40,36 @@
// Opening PDF by passing its binary data as a string. It is still preferable
// to use Uint8Array, but string or array-like structure will work too.
var loadingTask = pdfjsLib.getDocument({ data: pdfData, });
loadingTask.promise.then(function(pdf) {
(async function() {
var pdf = await loadingTask.promise;
// Fetch the first page.
pdf.getPage(1).then(function(page) {
var scale = 1.5;
var viewport = page.getViewport({ scale: scale, });
// Support HiDPI-screens.
var outputScale = window.devicePixelRatio || 1;
var page = await pdf.getPage(1);
var scale = 1.5;
var viewport = page.getViewport({ scale: scale, });
// Support HiDPI-screens.
var outputScale = window.devicePixelRatio || 1;
// Prepare canvas using PDF page dimensions.
var canvas = document.getElementById('the-canvas');
var context = canvas.getContext('2d');
// Prepare canvas using PDF page dimensions.
var canvas = document.getElementById('the-canvas');
var context = canvas.getContext('2d');
canvas.width = Math.floor(viewport.width * outputScale);
canvas.height = Math.floor(viewport.height * outputScale);
canvas.style.width = Math.floor(viewport.width) + "px";
canvas.style.height = Math.floor(viewport.height) + "px";
canvas.width = Math.floor(viewport.width * outputScale);
canvas.height = Math.floor(viewport.height * outputScale);
canvas.style.width = Math.floor(viewport.width) + "px";
canvas.style.height = Math.floor(viewport.height) + "px";
var transform = outputScale !== 1
? [outputScale, 0, 0, outputScale, 0, 0]
: null;
var transform = outputScale !== 1
? [outputScale, 0, 0, outputScale, 0, 0]
: null;
// Render PDF page into canvas context.
var renderContext = {
canvasContext: context,
transform: transform,
viewport: viewport,
};
page.render(renderContext);
});
});
// Render PDF page into canvas context.
var renderContext = {
canvasContext: context,
transform,
viewport,
};
page.render(renderContext);
})();
</script>
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