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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Check whether the preview image for setDesktopBackground is rendered
* correctly, without stretching
*/
add_task(async function() {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: "about:logo",
},
async browser => {
const dialogLoad = BrowserTestUtils.domWindowOpened(null, async win => {
await BrowserTestUtils.waitForEvent(win, "load");
Assert.equal(
win.document.documentElement.getAttribute("windowtype"),
"Shell:SetDesktopBackground",
"Opened correct window"
);
return true;
});
const image = content.document.images[0];
EventUtils.synthesizeMouseAtCenter(image, { type: "contextmenu" });
const menu = document.getElementById("contentAreaContextMenu");
await BrowserTestUtils.waitForPopupEvent(menu, "shown");
document.getElementById("context-setDesktopBackground").click();
// Need to explicitly close the menu (and wait for it), otherwise it fails
// verify/later tests
const menuClosed = BrowserTestUtils.waitForPopupEvent(menu, "hidden");
menu.hidePopup();
const win = await dialogLoad;
/* setDesktopBackground.js does a setTimeout to wait for correct
dimensions. If we don't wait here we could read the preview dimensions
before they're changed to match the screen */
await TestUtils.waitForTick();
const canvas = win.document.getElementById("screen");
const screenRatio = screen.width / screen.height;
const previewRatio = canvas.clientWidth / canvas.clientHeight;
info(`Screen dimensions are ${screen.width}x${screen.height}`);
info(`Screen's raw ratio is ${screenRatio}`);
info(
`Preview dimensions are ${canvas.clientWidth}x${canvas.clientHeight}`
);
info(`Preview's raw ratio is ${previewRatio}`);
Assert.ok(
previewRatio < screenRatio + 0.01 && previewRatio > screenRatio - 0.01,
"Preview's aspect ratio is within ±.01 of screen's"
);
win.close();
await menuClosed;
}
);
});
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