This reuses code intended only for mac manus and generalizes it. The
list of strings to add to po files is found in
GuiTranslator::translate.
This is useful now that LyX relies on QDialogButtonBox class for its
dialogs. Indeed many languages are not covered natively by Qt.
It is possible to enable the "locace" debug channel to see what
strings are not covered and should be added to our own translation
tables.
In order to make things easier, a new method getIfFound() has been
added to the Messages class, which returns an empty string when no
translation has been found, as Qt's translate() does.
This is done by handling explicitly a dummy Message object, where no parsing of mo file is attempted. This avoids in turn that the lyxerr object is used during initialization of a global dummy Message object.
Get the default language by a mix of QLocale and LyXRC::gui_language
Known limitations:
* encoding is supposed to be UTF-8 (the charset parameter is checked);
* context is not handled (implemented differently in LyX);
* plural forms not implemented (not used for now in LyX);.
* tThe byte endianness of the machine on which the .mo file have been
built is expected to be the same as the one of the machine where this
code is run.
The previous scheme of loading all possible translations and checking
whether the work is a bit too much "brute force" and causes problems
on Mac OS X (documents loaded with the wrong language).
Now there is an helper static method in Messages class that checks
whether a readable .mo file exist for the language. There should be an
API in gettext for doing that, but alas it is not possible.
As a consequence the method Language::translated() has been removed,
along with its cache.
The goal here is to get rid of the old code that modified variables
LANGUAGE and LC_ALL, therefore creating the problems mentionned
in the ticket.
In the new system, there is no explicit "GUI" message handler, that
needs to be reset at each language change. Instead, getGuiMessages
calls getMessages with the correct parameter. This allows to simplify
greatly the code and to remove a lot of old cruft.
The listings inset and include inset of type listings use two english terms
that are not localized yet: "Listing" for the caption and "Listings" for the
list of listings (not supported natively by LyX yet). The existing layout
translation mechanism has been extended to translate these terms as well:
1) Support [[stuff]] context in lib/layouttranslations
2) Support BabelPreamble and LangPreamble in InsetLayout
3) Use a InsetLayout for InsetInclude of type listings
4) Define BabelPreamble and LangPreamble in the layouts for InsetInclude
and InsetListings
* GuiApplication: delay locale loading until setGuiLanguage() is called.
* Messages: memorize default locale for current environment.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25930 a592a061-630c-0410-9148-cb99ea01b6c8
Now support/* should have no dependencies on src/* anymore.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@21851 a592a061-630c-0410-9148-cb99ea01b6c8
