2010-09-10 13:27:52 -07:00
|
|
|
<!DOCTYPE HTML>
|
|
|
|
|
<html>
|
|
|
|
|
<!--
|
|
|
|
|
https://bugzilla.mozilla.org/show_bug.cgi?id=474356
|
|
|
|
|
-->
|
|
|
|
|
<head>
|
|
|
|
|
<title>Test for Bug 474356</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=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) {
|
2011-04-30 15:16:19 -07:00
|
|
|
var previous = SpecialPowers.getFullZoom(window);
|
|
|
|
|
SpecialPowers.setFullZoom(window, factor);
|
2010-09-10 13:27:52 -07:00
|
|
|
return previous;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function isVisible(divName) {
|
|
|
|
|
return window.getComputedStyle(document.getElementById(divName), null).visibility == "visible";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function getZoomRatio() {
|
2011-04-30 15:16:19 -07:00
|
|
|
return SpecialPowers.DOMWindowUtils.screenPixelsPerCSSPixel;
|
2010-09-10 13:27:52 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var screenPixelsPerCSSPixel = getZoomRatio();
|
|
|
|
|
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 * screenPixelsPerCSSPixel);
|
|
|
|
|
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 * screenPixelsPerCSSPixel);
|
|
|
|
|
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>
|
