1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=473400
-->
<head>
<title>Test for Bug 473400</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body onload="run()">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=473400">Mozilla Bug 473400</a>
<iframe id="subdoc" src="about:blank"></iframe>
<div id="content" style="display: none">
</div>
<pre id="test">
<script class="testbody" type="application/javascript">
/** Test for Bug 473400 **/
SimpleTest.waitForExplicitFinish();
function run() {
var subdoc = document.getElementById("subdoc").contentDocument;
var subwin = document.getElementById("subdoc").contentWindow;
var style = subdoc.createElement("style");
style.setAttribute("type", "text/css");
subdoc.getElementsByTagName("head")[0].appendChild(style);
var sheet = style.sheet;
var iframe_style = document.getElementById("subdoc").style;
// Create a style rule and an element now based on the given media
// query "q", and return the computed style that should be passed to
// query_applies to see if that query currently applies.
var n = 0;
function make_query(q) {
var i = ++n;
sheet.insertRule("@media " + q + " { #e" + i + " { text-decoration: underline; } }", sheet.cssRules.length);
var e = subdoc.createElement("div");
e.id = "e" + i;
subdoc.body.appendChild(e);
var cs = subdoc.defaultView.getComputedStyle(e);
cs._originalQueryText = q;
return cs;
}
function query_applies(cs) {
return cs.getPropertyValue("text-decoration-line") == "underline";
}
function should_apply(cs) {
ok(query_applies(cs), cs._originalQueryText + " should apply");
}
function should_not_apply(cs) {
ok(!query_applies(cs), cs._originalQueryText + " should not apply");
}
var content_div = document.getElementById("content");
content_div.style.font = "initial";
var em_size =
getComputedStyle(content_div, "").fontSize.match(/^(\d+)px$/)[1];
let width_val = 317; // pick two not-too-round numbers
let height_val = 228;
iframe_style.width = width_val + "px";
iframe_style.height = height_val + "px";
var wh_queries = [
make_query("all and (min-width: " +
(Math.ceil(width_val/em_size) + 1) + "em)"),
make_query("all and (min-width: " +
(Math.floor(width_val/em_size) - 1) + "em)"),
make_query("all and (max-width: " +
(Math.ceil(width_val/em_size) + 1) + "em)"),
make_query("all and (max-width: " +
(Math.floor(width_val/em_size) - 1) + "em)"),
make_query("all and (min-width: " +
(Math.ceil(width_val/(em_size*2)) + 1) + "em)"),
make_query("all and (min-width: " +
(Math.floor(width_val/(em_size*2)) - 1) + "em)"),
make_query("all and (max-width: " +
(Math.ceil(width_val/(em_size*2)) + 1) + "em)"),
make_query("all and (max-width: " +
(Math.floor(width_val/(em_size*2)) - 1) + "em)")
];
is(wh_queries[0].fontSize, em_size + "px", "text zoom is 1.0");
should_not_apply(wh_queries[0]);
should_apply(wh_queries[1]);
should_apply(wh_queries[2]);
should_not_apply(wh_queries[3]);
SpecialPowers.setTextZoom(subwin, 2.0);
isnot(wh_queries[0].fontSize, em_size + "px", "text zoom is not 1.0");
should_not_apply(wh_queries[4]);
should_apply(wh_queries[5]);
should_apply(wh_queries[6]);
should_not_apply(wh_queries[7]);
SpecialPowers.setTextZoom(subwin, 1.0);
is(wh_queries[0].fontSize, em_size + "px", "text zoom is 1.0");
is(subwin.innerHeight, 228, "full zoom is 1.0");
should_not_apply(wh_queries[0]);
should_apply(wh_queries[1]);
should_apply(wh_queries[2]);
should_not_apply(wh_queries[3]);
SpecialPowers.setFullZoom(subwin, 2.0);
isnot(subwin.innerHeight, 228, "full zoom is not 1.0");
should_not_apply(wh_queries[4]);
should_apply(wh_queries[5]);
should_apply(wh_queries[6]);
should_not_apply(wh_queries[7]);
SpecialPowers.setFullZoom(subwin, 1.0);
is(subwin.innerHeight, 228, "full zoom is 1.0");
// Now test that certain things *don't* happen, i.e., that we're
// making the optimizations we expect.
subdoc.body.textContent = "";
subdoc.body.appendChild(subdoc.createElement("div"));
for (var ruleIdx = sheet.cssRules.length; ruleIdx-- != 0; ) {
sheet.deleteRule(ruleIdx);
}
var utils = SpecialPowers.getDOMWindowUtils(subwin);
var restyleGeneration, framesConstructed, framesReflowed;
function reset_change_counters()
{
restyleGeneration = utils.restyleGeneration;
framesConstructed = utils.framesConstructed;
framesReflowed = utils.framesReflowed;
}
function flush_and_assert_change_counters(desc, expected) {
subdoc.body.offsetHeight;
if (!("restyle" in expected) ||
!("construct" in expected) ||
!("reflow" in expected)) {
ok(false, "parameter missing expectation");
return;
}
var didRestyle = utils.restyleGeneration != restyleGeneration;
var constructs = utils.framesConstructed - framesConstructed;
var reflows = utils.framesReflowed - framesReflowed;
(expected.restyle ? isnot : is)(didRestyle, false, "restyle: " + desc);
(expected.construct ? isnot : is)(constructs, 0,
"frame construct count: " + desc);
(expected.reflow ? isnot : is)(reflows, 0, "reflow count: " + desc);
reset_change_counters();
}
subdoc.body.offsetHeight;
reset_change_counters();
iframe_style.width = "103px";
flush_and_assert_change_counters("change width with no media queries",
{ restyle: false, construct: false, reflow: true });
flush_and_assert_change_counters("no change",
{ restyle: false, construct: false, reflow: false });
iframe_style.height = "123px";
flush_and_assert_change_counters("change height with no media queries",
{ restyle: false, construct: false, reflow: true });
sheet.insertRule("@media (min-width: 150px) { div { display:flex } }", 0);
flush_and_assert_change_counters("add non-matching media query",
{ restyle: false, construct: false, reflow: false });
iframe_style.width = "177px";
flush_and_assert_change_counters("resize width across media query with 'display'",
{ restyle: true, construct: true, reflow: true });
iframe_style.width = "162px";
flush_and_assert_change_counters("resize width without crossing media query",
{ restyle: false, construct: false, reflow: true });
sheet.deleteRule(0);
flush_and_assert_change_counters("remove matching media query with 'display'",
{ restyle: true, construct: true, reflow: true });
sheet.insertRule("@media (max-height: 150px) { div { display:flex } }", 0);
flush_and_assert_change_counters("add matching media query with 'display'",
{ restyle: true, construct: true, reflow: true });
iframe_style.height = "111px";
flush_and_assert_change_counters("resize height without crossing media query",
{ restyle: false, construct: false, reflow: true });
iframe_style.height = "184px";
flush_and_assert_change_counters("resize height across media query with 'display'",
{ restyle: true, construct: true, reflow: true });
sheet.deleteRule(0);
flush_and_assert_change_counters("remove non-matching media query",
{ restyle: false, construct: false, reflow: false });
SimpleTest.finish();
}
</script>
</pre>
</body>
</html>
|
