Samuel MehrbrodtandStephan Bergmann
ae855bf481
jurt.jar and unoil.jar are kept as effectively empty jars, each with a Class-Path: ridl.jar in their meta-inf/manifest.mf, so that 3rd-party code loading them (with or without also loading ridl.jar) will still have access to their content. Conceptually, the UNOIDL entities in unoil.jar (corresponding to module offapi) are not part of the URE, but are now made available by URE's ridl.jar. This should probably not cause problems in practice. At least for now, we seal exactly those packages in ridl.jar that were originally sealed in jurt.jar. Ideally, all of ridl.jar could be sealed now, but that would be mildly incompatible, as it would prevent 3rd-party code from introducing additional UNOIDL entities in the relevant namespaces (even if that is something we do not want 3rd-party code to do anyway). However, some JunitTest_jurt_* define classes in those sealed packages. In the past they got away with that by using gb_JunitTest_use_jar_classset,*,jurt. Instead they now need to gb_JunitTest_use_jar_classset,*,ridl and drop the gb_JunitTest_use_jar,*,ridl. But the former only makes available the classes that are specified in ridljar/Jar_ridl.mk with gb_Jar_add_sourcefiles, not the UNOIDL entities specified via gb_Jar_add_packagedirs. But the tests need the udkapi UNOIDL entities, so introduce gb_JunitTest_add_classpath to let the tests get them explicitly. (Curiously, JunitTest_jurt_uno and JnitTest_jurt_util use gb_JunitTest_use_jar_classset,*,jurt but don't seem to acutally need it; lets leave that for a follow-up clean up.) As a follow-up clean up, relevant files could be moved from jurt/ to ridljar/. Change-Id: I836f4e7bb47fb41f1306e3f223da90dba988eb9a Co-authored-by: Stephan Bergmann <sbergman@redhat.com> Reviewed-on: https://gerrit.libreoffice.org/c/core/+/84946 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
LibreOffice
LibreOffice is an integrated office suite based on copyleft licenses and compatible with most document formats and standards. Libreoffice is backed by The Document Foundation, which represents a large independent community of enterprises, developers and other volunteers moved by the common goal of bringing to the market the best software for personal productivity. LibreOffice is open source, and free to download, use and distribute.
A quick overview of the LibreOffice code structure.
Overview
You can develop for LibreOffice in one of two ways, one recommended and one much less so. First the somewhat less recommended way: it is possible to use the SDK to develop an extension, for which you can read the API docs here and here. This re-uses the (extremely generic) UNO APIs that are also used by macro scripting in StarBasic.
The best way to add a generally useful feature to LibreOffice is to work on the code base however. Overall this way makes it easier to compile and build your code, it avoids any arbitrary limitations of our scripting APIs, and in general is far more simple and intuitive - if you are a reasonably able C++ programmer.
The build chain and runtime baselines
These are the current minimal operating system and compiler versions to run and compile LibreOffice, also used by the TDF builds:
- Windows:
- Runtime: Windows 7
- Build: Cygwin + Visual Studio 2017 version 15.7
- macOS:
- Runtime: 10.10
- Build: 10.13.2 + Xcode 9.3
- Linux:
- Runtime: RHEL 7 or CentOS 7
- Build: either GCC 7.0.0; or Clang 5.0.2 with libstdc++ 7.3.0
- iOS (only for LibreOfficeKit):
- Runtime: 11.4 (only support for newer i devices == 64 bit)
- Build: Xcode 9.3 and iPhone SDK 11.4
- Android:
- Build: NDK r19c and SDK 22.6.2
If you want to use Clang with the LibreOffice compiler plugins, the minimal version of Clang is 5.0.2. Since Xcode doesn't provide the compiler plugin headers, you have to compile your own Clang to use them on macOS.
You can find the TDF configure switches in the distro-configs/ directory.
To setup your initial build environment on Windows and macOS, we provide the LibreOffice Development Environment (LODE) scripts.
For more information see the build instructions for your platform in the TDF wiki.
The important bits of code
Each module should have a README file inside it which has some
degree of documentation for that module; patches are most welcome to
improve those. We have those turned into a web page here:
However, there are two hundred modules, many of them of only peripheral interest for a specialist audience. So - where is the good stuff, the code that is most useful. Here is a quick overview of the most important ones:
| Module | Description |
|---|---|
| sal/ | this provides a simple System Abstraction Layer |
| tools/ | this provides basic internal types: 'Rectangle', 'Color' etc. |
| vcl/ | this is the widget toolkit library and one rendering abstraction |
| framework | UNO framework, responsible for building toolbars, menus, status bars, and the chrome around the document using widgets from VCL, and XML descriptions from /uiconfig/ files |
| sfx2/ | legacy core framework used by Writer/Calc/Draw: document model / load/save / signals for actions etc. |
| svx/ | drawing model related helper code, including much of Draw/Impress |
Then applications
| Module | Description |
|---|---|
| desktop/ | this is where the 'main' for the application lives, init / bootstrap. the name dates back to an ancient StarOffice that also drew a desktop |
| sw/ | Writer |
| sc/ | Calc |
| sd/ | Draw / Impress |
There are several other libraries that are helpful from a graphical perspective:
| Module | Description |
|---|---|
| basegfx/ | algorithms and data-types for graphics as used in the canvas |
| canvas/ | new (UNO) canvas rendering model with various backends |
| cppcanvas/ | C++ helper classes for using the UNO canvas |
| drawinglayer/ | View code to render drawable objects and break them down into primitives we can render more easily. |
Rules for #include directives (C/C++)
Use the "..." form if and only if the included file is found next to the
including file. Otherwise, use the <...> form. (For further details, see the
mail Re: C[++]: Normalizing include syntax ("" vs
<>).)
The UNO API include files should consistently use double quotes, for the benefit of external users of this API.
loplugin:includeform (compilerplugins/clang/includeform.cxx) enforces these rules.
Finding out more
Beyond this, you can read the README files, send us patches, ask
on the mailing list libreoffice@lists.freedesktop.org (no subscription
required) or poke people on IRC #libreoffice-dev on irc.freenode.net -
we're a friendly and generally helpful mob. We know the code can be
hard to get into at first, and so there are no silly questions.