93 lines
3.1 KiB
JavaScript
93 lines
3.1 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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// Tests that correct window sizing values are reported and unaffected by zoom. In
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// particular, we want to ensure that the values for the window's outer and screen
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// sizing values reflect the size of the viewport.
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const TEST_URL = "data:text/html;charset=utf-8,";
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const WIDTH = 375;
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const HEIGHT = 450;
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const ZOOM_LEVELS = [0.3, 0.5, 0.9, 1, 1.5, 2, 2.4];
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addRDMTask(
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null,
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async function () {
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const tab = await addTab(TEST_URL);
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const browser = tab.linkedBrowser;
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const { ui, manager } = await openRDM(tab);
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await waitForDeviceAndViewportState(ui);
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await setViewportSize(ui, manager, WIDTH, HEIGHT);
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info("Ensure outer size values are unchanged at different zoom levels.");
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for (let i = 0; i < ZOOM_LEVELS.length; i++) {
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info(`Setting zoom level to ${ZOOM_LEVELS[i]}`);
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await promiseRDMZoom(ui, browser, ZOOM_LEVELS[i]);
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await checkWindowOuterSize(ui, ZOOM_LEVELS[i]);
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await checkWindowScreenSize(ui, ZOOM_LEVELS[i]);
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}
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},
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{ onlyPrefAndTask: true }
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);
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async function checkWindowOuterSize(ui, zoom_level) {
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return SpecialPowers.spawn(
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ui.getViewportBrowser(),
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[{ width: WIDTH, height: HEIGHT, zoom: zoom_level }],
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async function ({ width, height, zoom }) {
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// Approximate the outer size value returned on the window content with the expected
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// value. We should expect, at the very most, a 2px difference between the two due
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// to floating point rounding errors that occur when scaling from inner size CSS
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// integer values to outer size CSS integer values. See Part 1 of Bug 1107456.
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// Some of the drift is also due to full zoom scaling effects; see Bug 1577775.
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Assert.lessOrEqual(
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Math.abs(content.outerWidth - width),
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2,
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`window.outerWidth zoom ${zoom} should be ${width} and we got ${content.outerWidth}.`
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);
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Assert.lessOrEqual(
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Math.abs(content.outerHeight - height),
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2,
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`window.outerHeight zoom ${zoom} should be ${height} and we got ${content.outerHeight}.`
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);
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}
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);
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}
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async function checkWindowScreenSize(ui, zoom_level) {
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return SpecialPowers.spawn(
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ui.getViewportBrowser(),
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[{ width: WIDTH, height: HEIGHT, zoom: zoom_level }],
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async function ({ width, height, zoom }) {
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const { screen } = content;
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Assert.lessOrEqual(
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Math.abs(screen.availWidth - width),
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2,
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`screen.availWidth zoom ${zoom} should be ${width} and we got ${screen.availWidth}.`
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);
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Assert.lessOrEqual(
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Math.abs(screen.availHeight - height),
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2,
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`screen.availHeight zoom ${zoom} should be ${height} and we got ${screen.availHeight}.`
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);
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Assert.lessOrEqual(
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Math.abs(screen.width - width),
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2,
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`screen.width zoom " ${zoom} should be ${width} and we got ${screen.width}.`
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);
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Assert.lessOrEqual(
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Math.abs(screen.height - height),
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2,
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`screen.height zoom " ${zoom} should be ${height} and we got ${screen.height}.`
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);
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}
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);
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}
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