Files
odfstudio/filter
Michael Weghorn 03d5d803c4 weld: Switch TreeView selection changed signal param to ItemView
Switch the param for the signal and handlers used when
the selection in a weld::TreeView changes from weld::TreeView&
to the base class, weld::ItemView&.

This is in preparation of moving the logic to the weld::ItemView
base class in an upcoming commit.

Handler implementations that require a weld::TreeView
instance can use the one that the signal is connected
to, e.g. use the class member directly inside of the
implementation instead of using the param (as is done
in most of the places anyway).

Change-Id: I0bbf8fe1dbd95906a5224155d48d832bcd144532
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/203366
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
2026-04-10 06:36:08 +02:00
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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.