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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /layout/style/test/test_webkit_device_pixel_ratio.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/style/test/test_webkit_device_pixel_ratio.html')
| -rw-r--r-- | layout/style/test/test_webkit_device_pixel_ratio.html | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/layout/style/test/test_webkit_device_pixel_ratio.html b/layout/style/test/test_webkit_device_pixel_ratio.html new file mode 100644 index 000000000..ed655bd8a --- /dev/null +++ b/layout/style/test/test_webkit_device_pixel_ratio.html @@ -0,0 +1,77 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=1176968 +--> +<head> + <title>Test for Bug 1176968</title> + <script type="text/javascript" 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=1176968">Mozilla Bug 1176968</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 1176968 **/ + +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), null).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 (-webkit-device-pixel-ratio: " + baseRatio + ") {", + "#zoom1 { visibility: visible; }", + "}", + "@media all and (-webkit-device-pixel-ratio: " + doubleRatio + ") {", + "#zoom2 { visibility: visible; }", + "}", + "@media all and (-webkit-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> |