a1f7517996
This file (currently) contains not only DOM-specific helper functions/classes, but is used generally for various helper code relevant for main-thread functionality.
92 lines
2.8 KiB
JavaScript
92 lines
2.8 KiB
JavaScript
/* Copyright 2017 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
import { buildGetDocumentParams, NodeCanvasFactory } from './test_utils';
|
|
import { DOMCanvasFactory } from '../../src/display/display_utils';
|
|
import { getDocument } from '../../src/display/api';
|
|
import isNodeJS from '../../src/shared/is_node';
|
|
|
|
function getTopLeftPixel(canvasContext) {
|
|
let imgData = canvasContext.getImageData(0, 0, 1, 1);
|
|
return {
|
|
r: imgData.data[0],
|
|
g: imgData.data[1],
|
|
b: imgData.data[2],
|
|
a: imgData.data[3],
|
|
};
|
|
}
|
|
|
|
describe('custom canvas rendering', function() {
|
|
let transparentGetDocumentParams = buildGetDocumentParams('transparent.pdf');
|
|
|
|
let CanvasFactory;
|
|
let loadingTask;
|
|
let page;
|
|
|
|
beforeAll(function(done) {
|
|
if (isNodeJS()) {
|
|
CanvasFactory = new NodeCanvasFactory();
|
|
} else {
|
|
CanvasFactory = new DOMCanvasFactory();
|
|
}
|
|
loadingTask = getDocument(transparentGetDocumentParams);
|
|
loadingTask.promise.then(function(doc) {
|
|
return doc.getPage(1);
|
|
}).then(function(data) {
|
|
page = data;
|
|
done();
|
|
}).catch(done.fail);
|
|
});
|
|
|
|
afterAll(function(done) {
|
|
CanvasFactory = null;
|
|
page = null;
|
|
loadingTask.destroy().then(done);
|
|
});
|
|
|
|
it('renders to canvas with a default white background', function(done) {
|
|
var viewport = page.getViewport({ scale: 1, });
|
|
var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
|
|
|
|
const renderTask = page.render({
|
|
canvasContext: canvasAndCtx.context,
|
|
viewport,
|
|
});
|
|
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) {
|
|
var viewport = page.getViewport({ scale: 1, });
|
|
var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
|
|
|
|
const renderTask = page.render({
|
|
canvasContext: canvasAndCtx.context,
|
|
viewport,
|
|
background: 'rgba(255,0,0,1.0)',
|
|
});
|
|
renderTask.promise.then(function() {
|
|
expect(getTopLeftPixel(canvasAndCtx.context)).toEqual(
|
|
{ r: 255, g: 0, b: 0, a: 255, });
|
|
CanvasFactory.destroy(canvasAndCtx);
|
|
done();
|
|
}).catch(done.fail);
|
|
});
|
|
});
|