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Convert RenderTask, in src/display/api.js, to an ES6 class

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Also deprecates the `then` method, in favour of the `promise` getter.
This commit is contained in:
Jonas Jenwald 2018-11-08 13:46:02 +01:00
parent ef8e5fd77c
commit 2c003a82d5
4 changed files with 63 additions and 79 deletions
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35
test/unit/api_spec.js
View file

@ -1332,26 +1332,23 @@ describe('api', function() {
// Render the first page of the given PDF file.
// Fulfills the promise with the base64-encoded version of the PDF.
function renderPDF(filename) {
var loadingTask = getDocument(filename);
async function renderPDF(filename) {
const loadingTask = getDocument(filename);
loadingTasks.push(loadingTask);
return loadingTask.promise
.then(function(pdf) {
pdfDocuments.push(pdf);
return pdf.getPage(1);
}).then(function(page) {
var viewport = page.getViewport(1.2);
var canvasAndCtx = CanvasFactory.create(viewport.width,
viewport.height);
return page.render({
canvasContext: canvasAndCtx.context,
viewport,
}).then(function() {
var data = canvasAndCtx.canvas.toDataURL();
CanvasFactory.destroy(canvasAndCtx);
return data;
});
});
const pdf = await loadingTask.promise;
pdfDocuments.push(pdf);
const page = await pdf.getPage(1);
const viewport = page.getViewport(1.2);
const canvasAndCtx = CanvasFactory.create(viewport.width,
viewport.height);
const renderTask = page.render({
canvasContext: canvasAndCtx.context,
viewport,
});
await renderTask.promise;
const data = canvasAndCtx.canvas.toDataURL();
CanvasFactory.destroy(canvasAndCtx);
return data;
}
afterEach(function(done) {

40
test/unit/custom_spec.js
View file

@ -48,9 +48,7 @@ describe('custom canvas rendering', function() {
}).then(function(data) {
page = data;
done();
}).catch(function (reason) {
done.fail(reason);
});
}).catch(done.fail);
});
afterAll(function(done) {
@ -66,20 +64,16 @@ describe('custom canvas rendering', function() {
var viewport = page.getViewport(1);
var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
page.render({
const renderTask = page.render({
canvasContext: canvasAndCtx.context,
viewport,
}).then(function() {
var { r, g, b, a, } = getTopLeftPixel(canvasAndCtx.context);
CanvasFactory.destroy(canvasAndCtx);
expect(r).toEqual(255);
expect(g).toEqual(255);
expect(b).toEqual(255);
expect(a).toEqual(255);
done();
}).catch(function (reason) {
done(reason);
});
renderTask.promise.then(function() {
expect(getTopLeftPixel(canvasAndCtx.context)).toEqual(
{ r: 255, g: 255, b: 255, a: 255, });
CanvasFactory.destroy(canvasAndCtx);
done();
}).catch(done.fail);
});
it('renders to canvas with a custom background', function(done) {
@ -89,20 +83,16 @@ describe('custom canvas rendering', function() {
var viewport = page.getViewport(1);
var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
page.render({
const renderTask = page.render({
canvasContext: canvasAndCtx.context,
viewport,
background: 'rgba(255,0,0,1.0)',
}).then(function() {
var { r, g, b, a, } = getTopLeftPixel(canvasAndCtx.context);
CanvasFactory.destroy(canvasAndCtx);
expect(r).toEqual(255);
expect(g).toEqual(0);
expect(b).toEqual(0);
expect(a).toEqual(255);
done();
}).catch(function (reason) {
done(reason);
});
renderTask.promise.then(function() {
expect(getTopLeftPixel(canvasAndCtx.context)).toEqual(
{ r: 255, g: 0, b: 0, a: 255, });
CanvasFactory.destroy(canvasAndCtx);
done();
}).catch(done.fail);
});
});