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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/tests/mochitest/general/test_devicePixelRatio_with_zoom.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/tests/mochitest/general/test_devicePixelRatio_with_zoom.html')
| -rw-r--r-- | dom/tests/mochitest/general/test_devicePixelRatio_with_zoom.html | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/dom/tests/mochitest/general/test_devicePixelRatio_with_zoom.html b/dom/tests/mochitest/general/test_devicePixelRatio_with_zoom.html new file mode 100644 index 0000000000..710af8fe43 --- /dev/null +++ b/dom/tests/mochitest/general/test_devicePixelRatio_with_zoom.html @@ -0,0 +1,84 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>DevicePixelRatios with Zoom</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"> +</head> + +<body> + +<div>Testing devicePixelRatio with different zoom levels</div> + +<script type="application/javascript"> + +// We're creating a table of zooms and expected devicePixelRatio (DPR) strings. +// The values in the table are specific to the "native" DPR at zoom level 100%. +// If we don't have a table for a native DPR value, we'll trivially report +// a successful test with a note that we didn't have a table. +// For the moment, we only have a table for native DPR of 2. +let zoomsAndDPRsToTest; + +const originalZoom = SpecialPowers.getFullZoom(window); +const zoom = 1; +SpecialPowers.setFullZoom(window, zoom); + +const dprAtZoom1 = window.devicePixelRatio; +if (dprAtZoom1 == 1) { + zoomsAndDPRsToTest = [ + [300, "3"], + [250, "2.5"], + [200, "2"], + [167, "1.6666666666666667"], + [150, "1.5"], + [133, "1.3333333333333333"], + [120, "1.2"], + [110, "1.0909090909090908"], + [100, "1"], + [90, "0.8955223880597015"], + [80, "0.8"], + [67, "0.6666666666666666"], + [50, "0.5"], + ]; +} else if (dprAtZoom1 == 2) { + zoomsAndDPRsToTest = [ + [300, "6"], + [250, "5"], + [200, "4"], + [167, "3.3333333333333335"], + [150, "3"], + [133, "2.608695652173913"], // there's a trailing 0 here unreported by JS + [120, "2.4"], + [110, "2.2222222222222223"], + [100, "2"], + [90, "1.8181818181818181"], + [80, "1.5789473684210527"], + [67, "1.3333333333333333"], + [50, "1"], + ]; +} + +if (!zoomsAndDPRsToTest.length) { + // Need to run at least one test function to keep mochitest harness happy. + ok(true, `No table of data for devicePixelRatio of ${dprAtZoom1} at zoom level 100%.`); +} + +for (let i = 0; i < zoomsAndDPRsToTest.length; ++i) { + let data = zoomsAndDPRsToTest[i]; + let zoomPercent = data[0]; + let targetDPR = data[1]; + + let relativeZoom = zoom * zoomPercent / 100; + SpecialPowers.setFullZoom(window, relativeZoom); + + // Force conversion to string for string comparison to targetDPR. + let actualDPR = window.devicePixelRatio + ""; + is(actualDPR, targetDPR, `At ${zoomPercent}% zoom, window.devicePixelRatio is rounded correctly.`); +} + +// Reset the zoom when the test is done. +SpecialPowers.setFullZoom(window, originalZoom); +</script> + +</body> +</html> |