History

Noel Grandin e6cca74355 tdf#121740 elide temporary CacheItem object in BaseContainer::getByName shaves 2% off load time Change-Id: I91cc04916d77bc7ece1561462403067478a74bca Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134345 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>		2022-05-16 15:14:13 +02:00
..
inc
qa	Just use Any ctor instead of makeAny in filter	2022-05-04 14:09:58 +02:00
source	tdf#121740 elide temporary CacheItem object in BaseContainer::getByName	2022-05-16 15:14:13 +02:00
uiconfig/ui
AllLangMoTarget_flt.mk
Configuration_filter.mk
CppunitTest_filter_dialogs_test.mk
CppunitTest_filter_msfilter.mk
CppunitTest_filter_pdf.mk
CppunitTest_filter_priority.mk
CppunitTest_filter_svg.mk
CppunitTest_filter_textfilterdetect.mk	tdf#139991: move 0-byte file handling to SfxFrameLoader_Impl::load	2022-04-13 15:46:59 +02:00
CppunitTest_filter_xslt.mk
CustomTarget_svg.mk
IwyuFilter_filter.yaml
JunitTest_filter_complex.mk
Library_filterconfig.mk
Library_graphicfilter.mk
Library_icg.mk
Library_msfilter.mk
Library_odfflatxml.mk
Library_pdffilter.mk
Library_storagefd.mk
Library_svgfilter.mk
Library_t602filter.mk
Library_textfd.mk
Library_xmlfa.mk
Library_xmlfd.mk
Library_xsltdlg.mk
Library_xsltfilter.mk
Makefile
Module_filter.mk
Package_docbook.mk
Package_xhtml.mk
Package_xslt.mk
README.md
UIConfig_filter.mk

README.md

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.