anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-09-21 15:18:45 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Framework for math export exceptions. We can throw these if we find

Browse Source 
something we don't know how to handle and fall back to images.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@35024 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Richard Heck 2010-07-29 15:37:42 +00:00
parent 1c0d73425e
commit 7a8a1eca21
2 changed files with 51 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
src/mathed/InsetMathHull.cpp
View File

@ -1854,37 +1854,49 @@ int InsetMathHull::docbook(odocstream & os, OutputParams const & runparams) cons
docstring InsetMathHull::xhtml(XHTMLStream & xs, OutputParams const & op) const docstring InsetMathHull::xhtml(XHTMLStream & xs, OutputParams const & op) const
{ {
BufferParams::MathOutput mathtype = buffer().params().html_math_output; BufferParams::MathOutput const mathtype =
buffer().params().html_math_output;
bool success = false;
// FIXME Eventually we would like to do this inset by inset. // FIXME Eventually we would like to do this inset by inset.
switch (mathtype) { if (mathtype == BufferParams::MathML) {
case BufferParams::MathML: {
odocstringstream os; odocstringstream os;
MathStream ms(os); MathStream ms(os);
InsetMathGrid::mathmlize(ms); try {
if (getType() == hullSimple) InsetMathGrid::mathmlize(ms);
xs << html::StartTag("math", success = true;
"xmlns=\"http://www.w3.org/1998/Math/MathML\"", true); } catch (MathExportException const &) {}
else if (success) {
xs << html::StartTag("math", if (getType() == hullSimple)
"display=\"block\" xmlns=\"http://www.w3.org/1998/Math/MathML\"", true); xs << html::StartTag("math",
xs << XHTMLStream::NextRaw() "xmlns=\"http://www.w3.org/1998/Math/MathML\"", true);
<< os.str() else
<< html::EndTag("math"); xs << html::StartTag("math",
break; "display=\"block\" xmlns=\"http://www.w3.org/1998/Math/MathML\"", true);
} xs << XHTMLStream::NextRaw()
case BufferParams::HTML: { << os.str()
<< html::EndTag("math");
}
} else if (mathtype == BufferParams::HTML) {
odocstringstream os; odocstringstream os;
HtmlStream ms(os); HtmlStream ms(os);
InsetMathGrid::htmlize(ms); try {
string const tag = (getType() == hullSimple) ? "span" : "div"; InsetMathGrid::htmlize(ms);
xs << html::StartTag(tag, "class='formula'", true) success = true;
<< XHTMLStream::NextRaw() } catch (MathExportException const &) {}
<< os.str() if (success) {
<< html::EndTag(tag); string const tag = (getType() == hullSimple) ? "span" : "div";
break; xs << html::StartTag(tag, "class='formula'", true)
<< XHTMLStream::NextRaw()
<< os.str()
<< html::EndTag(tag);
}
} }
case BufferParams::Images: {
// the logic here is ugly, but it's meant to mean: if we've failed with
// one of the earlier attempts OR the mathtype IS Image, then try to
// export an image.
if (!success && mathtype != BufferParams::LaTeX) {
loadPreview(docit_); loadPreview(docit_);
graphics::PreviewImage const * pimage = preview_->getPreviewImage(buffer()); graphics::PreviewImage const * pimage = preview_->getPreviewImage(buffer());
if (pimage) { if (pimage) {
@ -1897,11 +1909,14 @@ docstring InsetMathHull::xhtml(XHTMLStream & xs, OutputParams const & op) const
xs.cr(); xs.cr();
// add the file to the list of files to be exported // add the file to the list of files to be exported
op.exportdata->addExternalFile("xhtml", mathimg); op.exportdata->addExternalFile("xhtml", mathimg);
break; success = true;
} }
LYXERR0("Unable to generate image. Falling through to LaTeX output.");
} }
case BufferParams::LaTeX: {
// so we'll pass this test if we've failed everything else, or
// if mathtype was LaTeX, since we won't have entered any of the
// earlier branches
if (!success) {
string const tag = (getType() == hullSimple) ? "span" : "div"; string const tag = (getType() == hullSimple) ? "span" : "div";
// Unfortunately, we cannot use latexString() because we do not want // Unfortunately, we cannot use latexString() because we do not want
// $...$ or whatever. // $...$ or whatever.
@ -1920,7 +1935,6 @@ docstring InsetMathHull::xhtml(XHTMLStream & xs, OutputParams const & op) const
<< html::EndTag(tag); << html::EndTag(tag);
xs.cr(); xs.cr();
} }
} // end switch
return docstring(); return docstring();
} }

7
src/mathed/MathStream.h
View File

@ -262,6 +262,13 @@ public:
}; };
/// Throw MathExportException to signal that the attempt to export
/// some math in the current format did not succeed. E.g., we can't
/// export xymatrix as MathML, so that will throw, and we'll fall back
/// to images.
class MathExportException : public std::exception {};
class MathStream { class MathStream {
public: public:
/// ///