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layout: Only take nonnegative margins into account when estimating

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inline placement of floats.

Otherwise, the heuristics can pass even when there are no floats,
causing block formatting contexts to be speculated to be flowing around
floats that don't exist!

Closes #10237.
This commit is contained in:
Patrick Walton 2016-03-28 15:52:05 -07:00
parent db95de6e58
commit 6eb58e2c54
4 changed files with 101 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

24
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -1484,6 +1484,18 @@
"url": "/_mozilla/css/float_right_intrinsic_width_a.html"
}
],
"css/float_speculation_negative_inline_margins_a.html": [
{
"path": "css/float_speculation_negative_inline_margins_a.html",
"references": [
[
"/_mozilla/css/float_speculation_negative_inline_margins_ref.html",
"=="
]
],
"url": "/_mozilla/css/float_speculation_negative_inline_margins_a.html"
}
],
"css/float_table_a.html": [
{
"path": "css/float_table_a.html",
@ -7822,6 +7834,18 @@
"url": "/_mozilla/css/float_right_intrinsic_width_a.html"
}
],
"css/float_speculation_negative_inline_margins_a.html": [
{
"path": "css/float_speculation_negative_inline_margins_a.html",
"references": [
[
"/_mozilla/css/float_speculation_negative_inline_margins_ref.html",
"=="
]
],
"url": "/_mozilla/css/float_speculation_negative_inline_margins_a.html"
}
],
"css/float_table_a.html": [
{
"path": "css/float_table_a.html",

30
tests/wpt/mozilla/tests/css/float_speculation_negative_inline_margins_a.html Normal file
View file

@ -0,0 +1,30 @@
<!DOCTYPE html>
<meta charset="utf-8">
<title></title>
<link rel="match" href="float_speculation_negative_inline_margins_ref.html">
<style>
* {
margin: 0;
padding: 0;
font-size: 0;
}
.red {
left: 50%;
position: absolute;
top: 40px;
width: 480px;
margin-left: -240px;
background: red;
}
.green {
display: block;
width: 410px;
height: 34px;
line-height: 34px;
background: green;
border: none
}
</style>
<div class="red"><input class="green"></div>

29
tests/wpt/mozilla/tests/css/float_speculation_negative_inline_margins_ref.html Normal file
View file

@ -0,0 +1,29 @@
<!DOCTYPE html>
<meta charset="utf-8">
<title></title>
<style>
* {
margin: 0;
padding: 0;
font-size: 0;
}
.red {
left: 50%;
position: absolute;
top: 40px;
width: 480px;
margin-left: -240px;
background: red;
}
.green {
display: block;
width: 410px;
height: 34px;
line-height: 34px;
background: green;
border: none
}
</style>
<div class="red"><div class="green"></div>