https://bugs.webkit.org/show_bug.cgi?id=115610

Patch by Frédéric Wang <fred.wang@free.fr> on 2013-07-01
Reviewed by Chris Fleizach.

Source/WebCore:

This patch adds basic support for the MathML mspace element. This is
important to let people control spacing of mathematical formulas.
Attributes width, height and depth are implemented. For the moment,
only nonnegative width are accepted.

* CMakeLists.txt: add references to the RenderMathMLSpace files.
* GNUmakefile.list.am: ditto.
* Target.pri: ditto.
* WebCore.vcxproj/WebCore.vcxproj: ditto.
* WebCore.vcxproj/WebCore.vcxproj.filters: ditto.
* WebCore.xcodeproj/project.pbxproj: ditto.
* css/mathml.css:
(mtable[columnlines="dashed"] > mtr > mtd + mtd): remove the obsolete linebreaking rule.
* mathml/MathMLTextElement.cpp:
(WebCore::MathMLTextElement::createRenderer): map mspaceTag to RenderMathMLSpace.
* mathml/mathattrs.in: add width, height and depth attributes
* mathml/mathtags.in: add mspace element
* rendering/mathml/RenderMathMLBlock.cpp:
(WebCore::parseMathMLLength): fix int to float conversion.
* rendering/mathml/RenderMathMLBlock.h: declare isRenderMathMLSpace.
(WebCore::RenderMathMLBlock::isRenderMathMLSpace):
* rendering/mathml/RenderMathMLSpace.cpp: Added.
(WebCore::RenderMathMLSpace::RenderMathMLSpace):
(WebCore::RenderMathMLSpace::isChildAllowed):
(WebCore::RenderMathMLSpace::computePreferredLogicalWidths):
(WebCore::RenderMathMLSpace::updateFromElement):
(WebCore::RenderMathMLSpace::updateLogicalWidth):
(WebCore::RenderMathMLSpace::updateLogicalHeight):
(WebCore::RenderMathMLSpace::layout):
(WebCore::RenderMathMLSpace::styleDidChange):
(WebCore::RenderMathMLSpace::firstLineBoxBaseline):
* rendering/mathml/RenderMathMLSpace.h: Added.
(WebCore::RenderMathMLSpace::isRenderMathMLSpace):
(WebCore::RenderMathMLSpace::renderName):
(WebCore::toRenderMathMLSpace):

LayoutTests:

Add a reftest for the mspace element (width, height and depth) and
the parsing of MathML lengths. Import a reftest from Gecko to check
positive namedspace values.

* mathml/presentation/mspace-expected.html: Added.
* mathml/presentation/mspace-units-expected.html: Added.
* mathml/presentation/mspace-units.html: Added.
* mathml/presentation/mspace.html: Added.
* mathml/presentation/positive-namedspace-expected.html: Added.
* mathml/presentation/positive-namedspace.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@152235 268f45cc-cd09-0410-ab3c-d52691b4dbfc