The current frame can be Basic, so only use it as a fallback to obtain selection. Also, failure to get the selection is not fatal here. The throwing behavior was since commit aa1927dc257b52edf96de220cc3797e02c83a0ae (Make svg export use slidesorter selection in most cases., 2012-10-10). Change-Id: I06f80151b4184f353d1d5387c11837f1e883a068 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/185983 Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com> Tested-by: Jenkins (cherry picked from commit 58ba249df589b0c9f91667f2938bfa18d2a1ce61) Reviewed-on: https://gerrit.libreoffice.org/c/core/+/185991 Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
LibreOffice Filters
Filter registration and some simple filters (also descriptions).
Desperate splitting of code into small shared libraries for historical
reasons presumably (OS/2 and Windows 3.x). The libraries produced from
the code in each subdirectory of filter/source/graphicfilter are
graphic format import or export filters. But they don't have uniform
API. Some have either a GraphicImport or GraphicExport entry point,
and are loaded and used in a uniform fashion from code in
svtools/source/filter/filter.cxx. Others have different API and are
loaded from other places. For instance icgm has ImportCGM, and is
loaded and used by sd/source/filter/cgm/sdcgmfilter.cxx (!).
Svgreader is used for "File -> Open" and then to choose the svg file.
For "Insert -> Picture -> From File", see svgio/source/svgreader directory.
Filter Configuration
The filter configuration consists of two parts, the type definition in
filter/source/config/fragments/types/ and the actual filter definition
in filter/source/config/fragments/filters/.
Each file type e.g. text file should be represented by exactly one type definition. This type can then be referenced by several different filters, e.g. calc text, writer text.