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b47daece8e
This makes these users (which are exceptions within layout, although low-level enough that it won't matter for font inflation work) call through to GetMetricsFor explicitly with the correct language, rather than using the broken nsPresContext::GetMetricsFor and its charset-detected language. This improves the correctness of our behavior for 'ch' and 'ex' CSS units when the font selection (or defaults) are language-dependent. It should also reduce the number of unique sets of font metrics requested (which helps nsFontCache effectiveness).
65 lines
1.8 KiB
HTML
65 lines
1.8 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=678671
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-->
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<head>
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<title>Test for Bug 678671</title>
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<script type="application/javascript" src="/MochiKit/packed.js"></script>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="text/javascript" src="property_database.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=678671">Mozilla Bug 678671</a>
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<p id="display"></p>
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<div id="content"></div>
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<script type="application/javascript">
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/** Test for Bug 678671 **/
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/**
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* Test 'ex' and 'ch' units in every place we possible can to make
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* sure they don't cause an infinite loop.
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*/
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var content = document.getElementById("content");
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var cs = getComputedStyle(content, "");
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for (var prop in gCSSProperties) {
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var info = gCSSProperties[prop];
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if (info.backend_only) {
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continue;
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}
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function test_val(v) {
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content.style.setProperty(prop, v, "");
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isnot(get_computed_value(cs, prop), "",
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"Setting '" + prop + "' to '" + v + "' should not cause infinite loop");
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}
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test_val('3ex');
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test_val('2ch');
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function test_replaced_values(value_list) {
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// For each item in value_list, if it looks like it has a dimension
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// in it, replace those dimensions with 3ex and 2ch and test it.
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for (var i = 0; i < value_list.length; ++i) {
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var value = value_list[i];
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function try_replace(withval) {
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var rep = value.replace(/[0-9.]+[a-zA-Z]+/g, withval)
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if (rep != value) {
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test_val(rep);
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}
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}
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try_replace('3ex');
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try_replace('2ch');
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}
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}
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test_replaced_values(info.initial_values);
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test_replaced_values(info.other_values);
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content.style.removeProperty(prop);
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}
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</script>
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</pre>
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</body>
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</html>
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