Provide proper fallback if a bibliography processor is not found

[lyx.git] / src / mathed / InsetMathXArrow.cpp

diff --git a/src/mathed/InsetMathXArrow.cpp b/src/mathed/InsetMathXArrow.cpp
index dbd16ac31c53348a2e74c761fa462acc8eb130a7..55f2665dad72dc7abc04a55f1f1fc0fedc66bc28 100644 (file)
--- a/src/mathed/InsetMathXArrow.cpp
+++ b/src/mathed/InsetMathXArrow.cpp
@@ -3,69 +3,77 @@
  * This file is part of LyX, the document processor.
  * Licence details can be found in the file COPYING.
  *
- * \author André Pönitz
+ * \author André Pönitz
  *
  * Full author contact details are available in file CREDITS.
  */
 
 #include <config.h>
 
+#include "support/lassert.h"
+
 #include "InsetMathXArrow.h"
+
 #include "MathData.h"
 #include "MathStream.h"
 #include "MathStream.h"
 #include "MathSupport.h"
 
 #include "LaTeXFeatures.h"
+#include "MetricsInfo.h"
 
 
-namespace lyx {
+#include <algorithm>
 
-using std::string;
-using std::auto_ptr;
+using namespace std;
 
+namespace lyx {
 
-InsetMathXArrow::InsetMathXArrow(docstring const & name)
-       : InsetMathFracBase(), name_(name)
+
+InsetMathXArrow::InsetMathXArrow(Buffer * buf, docstring const & name)
+       : InsetMathFracBase(buf), name_(name)
 {}
 
 
-auto_ptr<InsetBase> InsetMathXArrow::doClone() const
+Inset * InsetMathXArrow::clone() const
 {
-       return auto_ptr<InsetBase>(new InsetMathXArrow(*this));
+       return new InsetMathXArrow(*this);
 }
 
 
-bool InsetMathXArrow::metrics(MetricsInfo & mi, Dimension & dim) const
+void InsetMathXArrow::metrics(MetricsInfo & mi, Dimension & dim) const
 {
-       ScriptChanger dummy(mi.base);
-       cell(0).metrics(mi);
-       cell(1).metrics(mi);
-       dim.wid = std::max(cell(0).width(), cell(1).width()) + 10;
-       dim.asc = cell(0).height() + 10;
-       dim.des = cell(1).height();
-       metricsMarkers(dim);
-       if (dim_ == dim)
-               return false;
-       dim_ = dim;
-       return true;
+       Changer dummy2 = mi.base.changeEnsureMath();
+       Changer dummy = mi.base.changeScript();
+       Dimension dim0;
+       cell(0).metrics(mi, dim0);
+       Dimension dim1;
+       cell(1).metrics(mi, dim1);
+       dim.wid = max(dim0.width(), dim1.width()) + 10;
+       dim.asc = dim0.height() + 10;
+       dim.des = dim1.height();
 }
 
 
 void InsetMathXArrow::draw(PainterInfo & pi, int x, int y) const
 {
-       ScriptChanger dummy(pi.base);
-       cell(0).draw(pi, x + 5, y - 10);
-       cell(1).draw(pi, x + 5, y + cell(1).height());
-       mathed_draw_deco(pi, x + 1, y - 7, width() - 2, 5, name_);
-       drawMarkers(pi, x, y);
+       Changer dummy2 = pi.base.changeEnsureMath();
+       Changer dummy = pi.base.changeScript();
+       Dimension const dim = dimension(*pi.base.bv);
+       Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
+       // center the cells with the decoration
+       cell(0).draw(pi, x + dim.width()/2 - dim0.width()/2, y - 10);
+       Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
+       cell(1).draw(pi, x + dim.width()/2 - dim1.width()/2, y + dim1.height());
+       mathed_draw_deco(pi, x, y - 7, dim.wid, 5, name_);
 }
 
 
 void InsetMathXArrow::write(WriteStream & os) const
 {
+       MathEnsurer ensurer(os);
        os << '\\' << name_;
-       if (cell(1).size())
+       if (!cell(1).empty())
                os << '[' << cell(1) << ']';
        os << '{' << cell(0) << '}';
 }
@@ -77,9 +85,107 @@ void InsetMathXArrow::normalize(NormalStream & os) const
 }
 
 
+void InsetMathXArrow::mathmlize(MathStream & ms) const
+{
+       char const * arrow;
+
+       if (name_ == "xleftarrow")
+               arrow = "&larr;";
+       else if (name_ == "xrightarrow")
+               arrow = "&rarr;";
+       else if (name_ == "xhookleftarrow")
+               arrow = "&larrhk;";
+       else if (name_ == "xhookrightarrow")
+               arrow = "&rarrhk;";
+       else if (name_ == "xLeftarrow")
+               arrow = "&lArr;";
+       else if (name_ == "xRightarrow")
+               arrow = "&rArr;";
+       else if (name_ == "xleftrightarrow")
+               arrow = "&leftrightarrow;";
+       else if (name_ == "xLeftrightarrow")
+               arrow = "&Leftrightarrow;";
+       else if (name_ == "xleftharpoondown")
+               arrow = "&leftharpoondown;";
+       else if (name_ == "xleftharpoonup")
+               arrow = "&leftharpoonup;";
+       else if (name_ == "xleftrightharpoons")
+               arrow = "&leftrightharpoons;";
+       else if (name_ == "xrightharpoondown")
+               arrow = "&rightharpoondown;";
+       else if (name_ == "xrightharpoonup")
+               arrow = "&rightharpoonup;";
+       else if (name_ == "xrightleftharpoons")
+               arrow = "&rightleftharpoons;";
+       else if (name_ == "xmapsto")
+               arrow = "&mapsto;";
+       else {
+               lyxerr << "mathmlize conversion for '" << name_ << "' not implemented" << endl;
+               LASSERT(false, arrow = "&rarr;");
+       }
+       ms << "<munderover accent='false' accentunder='false'>"
+          << arrow << cell(1) << cell(0)
+          << "</munderover>";
+}
+
+
+void InsetMathXArrow::htmlize(HtmlStream & os) const
+{
+       char const * arrow;
+
+       if (name_ == "xleftarrow")
+               arrow = "&larr;";
+       else if (name_ == "xrightarrow")
+               arrow = "&rarr;";
+       else if (name_ == "xhookleftarrow")
+               arrow = "&larrhk;";
+       else if (name_ == "xhookrightarrow")
+               arrow = "&rarrhk;";
+       else if (name_ == "xLeftarrow")
+               arrow = "&lArr;";
+       else if (name_ == "xRightarrow")
+               arrow = "&rArr;";
+       else if (name_ == "xleftrightarrow")
+               arrow = "&leftrightarrow;";
+       else if (name_ == "xLeftrightarrow")
+               arrow = "&Leftrightarrow;";
+       else if (name_ == "xleftharpoondown")
+               arrow = "&leftharpoondown;";
+       else if (name_ == "xleftharpoonup")
+               arrow = "&leftharpoonup;";
+       else if (name_ == "xleftrightharpoons")
+               arrow = "&leftrightharpoons;";
+       else if (name_ == "xrightharpoondown")
+               arrow = "&rightharpoondown;";
+       else if (name_ == "xrightharpoonup")
+               arrow = "&rightharpoonup;";
+       else if (name_ == "xrightleftharpoons")
+               arrow = "&rightleftharpoons;";
+       else if (name_ == "xmapsto")
+               arrow = "&mapsto;";
+       else {
+               lyxerr << "htmlize conversion for '" << name_ << "' not implemented" << endl;
+               LASSERT(false, arrow = "&rarr;");
+       }
+       os << MTag("span", "class='xarrow'")
+                << MTag("span", "class='xatop'") << cell(0) << ETag("span")
+                << MTag("span", "class='xabottom'") << arrow << ETag("span")
+                << ETag("span");
+}
+
+
 void InsetMathXArrow::validate(LaTeXFeatures & features) const
 {
-       features.require("amsmath");
+       if (name_ == "xleftarrow" || name_ == "xrightarrow")
+               features.require("amsmath");
+       else
+               features.require("mathtools");
+       if (features.runparams().math_flavor == OutputParams::MathAsHTML)
+               // CSS adapted from eLyXer
+               features.addCSSSnippet(
+                       "span.xarrow{display: inline-block; vertical-align: middle; text-align:center;}\n"
+                       "span.xatop{display: block;}\n"
+                       "span.xabottom{display: block;}");
        InsetMathNest::validate(features);
 }