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