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Bug 854339 - Make the equal sign stretchable in MathML. r=karlt

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This commit is contained in:
Frédéric Wang 2013-06-04 08:17:45 -04:00
parent 98d42caf36
commit 925cae8e05
6 changed files with 39 additions and 8 deletions
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2
layout/mathml/mathfont.properties
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@ -111,7 +111,7 @@ operator.\u003B.infix = lspace:0 rspace:3 separator # ;
operator.\u003C.infix = lspace:5 rspace:5 # <
operator.\u003C\u003D.infix = lspace:5 rspace:5 # <=
operator.\u003C\u003E.infix = lspace:1 rspace:1 # <>
operator.\u003D.infix = lspace:5 rspace:5 # =
operator.\u003D.infix = lspace:5 rspace:5 direction:horizontal # =
operator.\u003D\u003D.infix = lspace:4 rspace:4 # ==
operator.\u003E.infix = lspace:5 rspace:5 # >
operator.\u003E\u003D.infix = lspace:5 rspace:5 # >=

1
layout/mathml/mathfontUnicode.properties
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@ -23,6 +23,7 @@
\u203E = \uFFFD\uFFFD\uFFFD\u0305\u00AF # overline
\u0332 = \uFFFD\uFFFD\uFFFD\u0332\u0332 # COMBINING LOW LINE, UnderBar
\u005F = \uFFFD\uFFFD\uFFFD\u0332\u0332 # _ low line
\u003D = \uFFFD\uFFFD\uFFFD\u003D\u003D # = equal sign
\u2016 = \uFFFD\uFFFD\uFFFD\u2016\u2016 # DOUBLE VERTICAL LINE, Vert, Verbar

15
layout/mathml/nsMathMLmoFrame.cpp
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@ -167,12 +167,6 @@ nsMathMLmoFrame::ProcessTextData()
mFlags |= allFlags & NS_MATHML_OPERATOR_ACCENT;
mFlags |= allFlags & NS_MATHML_OPERATOR_MOVABLELIMITS;
bool isMutable =
NS_MATHML_OPERATOR_IS_STRETCHY(allFlags) ||
NS_MATHML_OPERATOR_IS_LARGEOP(allFlags);
if (isMutable)
mFlags |= NS_MATHML_OPERATOR_MUTABLE;
// see if this is an operator that should be centered to cater for
// fonts that are not math-aware
if (1 == length) {
@ -187,12 +181,19 @@ nsMathMLmoFrame::ProcessTextData()
// cache the operator
mMathMLChar.SetData(presContext, data);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, &mMathMLChar, isMutable);
// cache the native direction -- beware of bug 133429...
// mEmbellishData.direction must always retain our native direction, whereas
// mMathMLChar.GetStretchDirection() may change later, when Stretch() is called
mEmbellishData.direction = mMathMLChar.GetStretchDirection();
bool isMutable =
NS_MATHML_OPERATOR_IS_LARGEOP(allFlags) ||
(mEmbellishData.direction != NS_STRETCH_DIRECTION_UNSUPPORTED);
if (isMutable)
mFlags |= NS_MATHML_OPERATOR_MUTABLE;
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, &mMathMLChar, isMutable);
}
// get our 'form' and lookup in the Operator Dictionary to fetch

1
layout/reftests/mathml/reftest.list
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@ -82,6 +82,7 @@ fails == mstyle-5.xhtml mstyle-5-ref.xhtml # Bug 787215
== scale-stretchy-3.xhtml scale-stretchy-3-ref.xhtml
!= scale-stretchy-4.xhtml scale-stretchy-4-ref.xhtml
!= scale-stretchy-5.xhtml scale-stretchy-5-ref.xhtml
!= stretchy-1.html stretchy-1-ref.html
== math-as-mstyle-1.xhtml math-as-mstyle-1-ref.xhtml
== mpadded-1.html mpadded-1-ref.html
== mpadded-2.html mpadded-2-ref.html

14
layout/reftests/mathml/stretchy-1-ref.html Normal file
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@ -0,0 +1,14 @@
<!DOCTYPE html>
<html>
<head><title>Test stretchy equal (bug 854339)</title></head>
<body>
<math>
<munder>
<mi>AVERYLONGBASE</mi>
<mo stretchy="false">=</mo>
</munder>
</math>
</body>
</html>

14
layout/reftests/mathml/stretchy-1.html Normal file
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@ -0,0 +1,14 @@
<!DOCTYPE html>
<html>
<head><title>Test stretchy equal (bug 854339)</title></head>
<body>
<math>
<munder>
<mi>AVERYLONGBASE</mi>
<mo stretchy="true">=</mo>
</munder>
</math>
</body>
</html>