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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
| commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
| tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /layout/style/test/test_moz_device_pixel_ratio.html | |
| parent | Initial commit. (diff) | |
| download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip | |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/style/test/test_moz_device_pixel_ratio.html')
| -rw-r--r-- | layout/style/test/test_moz_device_pixel_ratio.html | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/layout/style/test/test_moz_device_pixel_ratio.html b/layout/style/test/test_moz_device_pixel_ratio.html new file mode 100644 index 0000000000..9d3d1f8ea6 --- /dev/null +++ b/layout/style/test/test_moz_device_pixel_ratio.html @@ -0,0 +1,77 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=474356 +--> +<head> + <title>Test for Bug 474356</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> + <style>.zoom-test { visibility: hidden; }</style> + <style><!-- placeholder for dynamic additions --></style> +</head> +<body onload="run()"> +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=474356">Mozilla Bug 474356</a> +<div id="content" style="display: none"> + +</div> +<script type="text/javascript"> +</script> +<pre id="test"> +<div id="zoom1" class="zoom-test"></div> +<div id="zoom2" class="zoom-test"></div> +<div id="zoom3" class="zoom-test"></div> +<script class="testbody" type="application/javascript"> + +/** Test for Bug 474356 **/ + +SimpleTest.waitForExplicitFinish(); + +function run() { + function zoom(factor) { + var previous = SpecialPowers.getFullZoom(window); + SpecialPowers.setFullZoom(window, factor); + return previous; + } + + function isVisible(divName) { + return window.getComputedStyle(document.getElementById(divName)).visibility == "visible"; + } + + function getScreenPixelsPerCSSPixel() { + return SpecialPowers.DOMWindowUtils.screenPixelsPerCSSPixel; + } + + var screenPixelsPerCSSPixel = getScreenPixelsPerCSSPixel(); + var baseRatio = 1.0 * screenPixelsPerCSSPixel; + var doubleRatio = 2.0 * screenPixelsPerCSSPixel; + var halfRatio = 0.5 * screenPixelsPerCSSPixel; + var styleElem = document.getElementsByTagName("style")[1]; + styleElem.textContent = + ["@media all and (-moz-device-pixel-ratio: " + baseRatio + ") {", + "#zoom1 { visibility: visible; }", + "}", + "@media all and (-moz-device-pixel-ratio: " + doubleRatio + ") {", + "#zoom2 { visibility: visible; }", + "}", + "@media all and (-moz-device-pixel-ratio: " + halfRatio + ") {", + "#zoom3 { visibility: visible; }", + "}" + ].join("\n"); + + ok(isVisible("zoom1"), "Base ratio rule should apply at base zoom level"); + ok(!isVisible("zoom2") && !isVisible("zoom3"), "no other rules should apply"); + var origZoom = zoom(2); + ok(isVisible("zoom2"), "Double ratio rule should apply at double zoom level"); + ok(!isVisible("zoom1") && !isVisible("zoom3"), "no other rules should apply"); + zoom(0.5); + ok(isVisible("zoom3"), "Half ratio rule should apply at half zoom level"); + ok(!isVisible("zoom1") && !isVisible("zoom2"), "no other rules should apply"); + zoom(origZoom); + + SimpleTest.finish(); +} +</script> +</pre> +</body> +</html> |