*** Extend preview scripts to also handle PDF output (bug 2165) ***

[features.git] / src / graphics / PreviewLoader.cpp

diff --git a/src/graphics/PreviewLoader.cpp b/src/graphics/PreviewLoader.cpp
index 3c3fd9d38a43ff059084b220c1ac4f00a84af0cc..1a478a81ac10ea44e5b2cbee03c7161240d82e89 100644 (file)
--- a/src/graphics/PreviewLoader.cpp
+++ b/src/graphics/PreviewLoader.cpp
@@ -717,8 +717,19 @@ void PreviewLoader::Impl::dumpPreamble(odocstream & os) const
 
        // Use the preview style file to ensure that each snippet appears on a
        // fresh page.
+       // Also support PDF output (automatically generated e.g. when
+       // \usepackage[pdftex]{hyperref} is used.
        os << "\n"
-          << "\\usepackage[active,delayed,dvips,showlabels,lyx]{preview}\n"
+          << "\\newif\\ifpdf\n"
+          << "\\ifx\\pdfoutput\\undefined\n"
+          << "\\else\\ifx\\pdfoutput\\relax\n"
+          << "\\else\\ifnum0=\\pdfoutput\n"
+          << "\\else\\pdftrue\\fi\\fi\\fi\n"
+          << "\\ifpdf\n"
+          << "  \\usepackage[active,delayed,tightpage,showlabels,lyx,pdftex]{preview}\n"
+          << "\\else\n"
+          << "  \\usepackage[active,delayed,showlabels,lyx,dvips]{preview}\n"
+          << "\\fi\n"
           << "\n";
 }