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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
const DOC_SMALL = toDataURL("<div>Hello world");
const DOC_LARGE = toDataURL("<div style='margin: 150vh 0 0 150vw'>Hello world");
const MAX_WINDOW_SIZE = 10000000;
function getContentDPR() {
info(`Retrieve device pixel ratio in content`);
return SpecialPowers.spawn(
gBrowser.selectedBrowser,
[],
_ => content.browsingContext.overrideDPPX || content.devicePixelRatio
);
}
add_task(async function dimensionsSmallerThanWindow({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const overrideSettings = {
width: Math.floor(layoutViewport.clientWidth / 2),
height: Math.floor(layoutViewport.clientHeight / 3),
deviceScaleFactor: 1.0,
};
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
overrideSettings.width,
"Expected layout viewport width set"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
overrideSettings.height,
"Expected layout viewport height set"
);
is(
updatedLayoutMetrics.contentSize.width,
overrideSettings.width,
"Expected content size width set"
);
is(
updatedLayoutMetrics.contentSize.height,
overrideSettings.height,
"Expected content size height set"
);
});
add_task(async function dimensionsLargerThanWindow({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_LARGE);
const { layoutViewport } = await Page.getLayoutMetrics();
const overrideSettings = {
width: layoutViewport.clientWidth * 2,
height: layoutViewport.clientHeight * 2,
deviceScaleFactor: 1.0,
};
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_LARGE);
const scrollbarSize = await getScrollbarSize();
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
overrideSettings.width - scrollbarSize.width,
"Expected layout viewport width set"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
overrideSettings.height - scrollbarSize.height,
"Expected layout viewport height set"
);
});
add_task(async function noSizeChangeForSameWidthAndHeight({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const overrideSettings = {
width: layoutViewport.clientWidth,
height: layoutViewport.clientHeight,
deviceScaleFactor: 1.0,
};
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Expected layout viewport width set"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Expected layout viewport height set"
);
});
add_task(async function noWidthChangeWithZeroWidth({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const overrideSettings = {
width: 0,
height: Math.floor(layoutViewport.clientHeight / 3),
deviceScaleFactor: 1.0,
};
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Expected layout viewport width set"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
overrideSettings.height,
"Expected layout viewport height set"
);
});
add_task(async function noHeightChangeWithZeroHeight({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const overrideSettings = {
width: Math.floor(layoutViewport.clientWidth / 2),
height: 0,
deviceScaleFactor: 1.0,
};
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
overrideSettings.width,
"Expected layout viewport width set"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Expected layout viewport height set"
);
});
add_task(async function nosizeChangeWithZeroWidthAndHeight({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const overrideSettings = {
width: 0,
height: 0,
deviceScaleFactor: 1.0,
};
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Expected layout viewport width set"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Expected layout viewport height set"
);
});
add_task(async function failsWithNegativeWidth({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const ratio = await getContentDPR();
const overrideSettings = {
width: -1,
height: Math.floor(layoutViewport.clientHeight / 3),
deviceScaleFactor: 1.0,
};
let errorThrown = false;
try {
await Emulation.setDeviceMetricsOverride(overrideSettings);
} catch (e) {
errorThrown = true;
}
ok(errorThrown, "Negative width raised error");
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Visible layout width hasn't been changed"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Visible layout height hasn't been changed"
);
is(await getContentDPR(), ratio, "Device pixel ratio hasn't been changed");
});
add_task(async function failsWithTooLargeWidth({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const ratio = await getContentDPR();
const overrideSettings = {
width: MAX_WINDOW_SIZE + 1,
height: Math.floor(layoutViewport.clientHeight / 3),
deviceScaleFactor: 1.0,
};
let errorThrown = false;
try {
await Emulation.setDeviceMetricsOverride(overrideSettings);
} catch (e) {
errorThrown = true;
}
ok(errorThrown, "Too large width raised error");
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Visible layout width hasn't been changed"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Visible layout height hasn't been changed"
);
is(await getContentDPR(), ratio, "Device pixel ratio hasn't been changed");
});
add_task(async function failsWithNegativeHeight({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const ratio = await getContentDPR();
const overrideSettings = {
width: Math.floor(layoutViewport.clientWidth / 2),
height: -1,
deviceScaleFactor: 1.0,
};
let errorThrown = false;
try {
await Emulation.setDeviceMetricsOverride(overrideSettings);
} catch (e) {
errorThrown = true;
}
ok(errorThrown, "Negative height raised error");
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Visible layout width hasn't been changed"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Visible layout height hasn't been changed"
);
is(await getContentDPR(), ratio, "Device pixel ratio hasn't been changed");
});
add_task(async function failsWithTooLargeHeight({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const ratio = await getContentDPR();
const overrideSettings = {
width: Math.floor(layoutViewport.clientWidth / 2),
height: MAX_WINDOW_SIZE + 1,
deviceScaleFactor: 1.0,
};
let errorThrown = false;
try {
await Emulation.setDeviceMetricsOverride(overrideSettings);
} catch (e) {
errorThrown = true;
}
ok(errorThrown, "Too large height raised error");
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Visible layout width hasn't been changed"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Visible layout height hasn't been changed"
);
is(await getContentDPR(), ratio, "Device pixel ratio hasn't been changed");
});
add_task(async function setDevicePixelRatio({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const ratio_orig = await getContentDPR();
const overrideSettings = {
width: layoutViewport.clientWidth,
height: layoutViewport.clientHeight,
deviceScaleFactor: ratio_orig * 2,
};
// Set a custom pixel ratio
await Emulation.setDeviceMetricsOverride(overrideSettings);
await loadURL(DOC_SMALL);
is(await getContentDPR(), ratio_orig * 2, "Expected device pixel ratio set");
});
add_task(async function failsWithNegativeRatio({ client }) {
const { Emulation, Page } = client;
await loadURL(DOC_SMALL);
const { layoutViewport } = await Page.getLayoutMetrics();
const ratio = await getContentDPR();
const overrideSettings = {
width: Math.floor(layoutViewport.clientHeight / 2),
height: Math.floor(layoutViewport.clientHeight / 3),
deviceScaleFactor: -1,
};
let errorThrown = false;
try {
await Emulation.setDeviceMetricsOverride(overrideSettings);
} catch (e) {
errorThrown = true;
}
ok(errorThrown, "Negative device scale factor raised error");
await loadURL(DOC_SMALL);
const updatedLayoutMetrics = await Page.getLayoutMetrics();
is(
updatedLayoutMetrics.layoutViewport.clientWidth,
layoutViewport.clientWidth,
"Visible layout width hasn't been changed"
);
is(
updatedLayoutMetrics.layoutViewport.clientHeight,
layoutViewport.clientHeight,
"Visible layout height hasn't been changed"
);
is(await getContentDPR(), ratio, "Device pixel ratio hasn't been changed");
});
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