510 lines
16 KiB
Objective-C
510 lines
16 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: intl.h
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// Purpose: interface of wxLocale
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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This is the layout direction stored in wxLanguageInfo and returned by
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wxApp::GetLayoutDirection(), wxWindow::GetLayoutDirection(),
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wxDC::GetLayoutDirection() for RTL (right-to-left) languages support.
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*/
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enum wxLayoutDirection
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{
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wxLayout_Default,
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wxLayout_LeftToRight,
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wxLayout_RightToLeft
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};
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/**
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Encapsulates a ::wxLanguage identifier together with OS-specific information
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related to that language.
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@beginWxPerlOnly
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In wxPerl @c Wx::LanguageInfo has only one method:
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- Wx::LanguageInfo->new(language, canonicalName, WinLang, WinSubLang, Description)
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@endWxPerlOnly
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*/
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struct wxLanguageInfo
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{
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/// ::wxLanguage id.
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/// It should be greater than @c wxLANGUAGE_USER_DEFINED when defining your own
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/// language info structure.
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int Language;
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/// Canonical name of the language, e.g. @c fr_FR.
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wxString CanonicalName;
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//@{
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/**
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Win32 language identifiers (LANG_xxxx, SUBLANG_xxxx).
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@onlyfor{wxmsw}
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*/
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wxUint32 WinLang, WinSublang;
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//@}
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/// Human-readable name of the language.
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wxString Description;
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/// The layout direction used for this language.
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wxLayoutDirection LayoutDirection;
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/// Return the LCID corresponding to this language.
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/// @onlyfor{wxmsw}
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wxUint32 GetLCID() const;
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/// Return the locale name corresponding to this language usable with
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/// @c setlocale() on the current system.
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wxString GetLocaleName() const;
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};
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/**
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The category of locale settings.
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@see wxLocale::GetInfo()
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*/
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enum wxLocaleCategory
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{
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/// Number formatting.
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wxLOCALE_CAT_NUMBER,
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/// Date/time formatting.
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wxLOCALE_CAT_DATE,
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/// Monetary values formatting.
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wxLOCALE_CAT_MONEY,
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/**
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Default category for the wxLocaleInfo value.
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This category can be used for values which only make sense for a single
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category, e.g. wxLOCALE_SHORT_DATE_FMT which can only be used with
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wxLOCALE_CAT_DATE. As this is the default value of the second parameter
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of wxLocale::GetInfo(), wxLOCALE_CAT_DATE can be omitted when asking
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for wxLOCALE_SHORT_DATE_FMT value.
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@since 2.9.0
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*/
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wxLOCALE_CAT_DEFAULT
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};
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/**
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The values understood by wxLocale::GetInfo().
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Note that for the @c wxLOCALE_*_FMT constants (the date and time formats),
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the strings returned by wxLocale::GetInfo() use strftime() or,
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equivalently, wxDateTime::Format() format. If the relevant format
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couldn't be determined, an empty string is returned -- there is no
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fallback value so that the application could determine the best course
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of actions itself in such case.
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All of these values are used with @c wxLOCALE_CAT_DATE in wxLocale::GetInfo() or,
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more typically, with @c wxLOCALE_CAT_DEFAULT as they only apply to a single category.
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*/
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enum wxLocaleInfo
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{
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/**
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The thousands separator.
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This value can be used with either wxLOCALE_CAT_NUMBER or
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wxLOCALE_CAT_MONEY categories.
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*/
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wxLOCALE_THOUSANDS_SEP,
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/**
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The character used as decimal point.
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This value can be used with either wxLOCALE_CAT_NUMBER or
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wxLOCALE_CAT_MONEY categories.
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*/
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wxLOCALE_DECIMAL_POINT,
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/**
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Short date format.
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Notice that short and long date formats may be the same under POSIX
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systems currently but may, and typically are, different under MSW or OS X.
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@since 2.9.0
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*/
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wxLOCALE_SHORT_DATE_FMT,
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/**
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Long date format.
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@since 2.9.0
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*/
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wxLOCALE_LONG_DATE_FMT,
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/**
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Date and time format.
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@since 2.9.0
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*/
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wxLOCALE_DATE_TIME_FMT,
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/**
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Time format.
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@since 2.9.0
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*/
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wxLOCALE_TIME_FMT
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};
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/**
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@class wxLocale
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wxLocale class encapsulates all language-dependent settings and is a
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generalization of the C locale concept.
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In wxWidgets this class manages current locale. It also initializes and
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activates wxTranslations object that manages message catalogs.
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For a list of the supported languages, please see ::wxLanguage enum values.
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These constants may be used to specify the language in wxLocale::Init and
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are returned by wxLocale::GetSystemLanguage.
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@beginWxPerlOnly
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In wxPerl you can't use the '_' function name, so
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the @c Wx::Locale module can export the @c gettext and
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@c gettext_noop under any given name.
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@code
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# this imports gettext ( equivalent to Wx::GetTranslation
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# and gettext_noop ( a noop )
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# into your module
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use Wx::Locale qw(:default);
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# ....
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# use the functions
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print gettext( "Panic!" );
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button = Wx::Button-new( window, -1, gettext( "Label" ) );
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@endcode
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If you need to translate a lot of strings, then adding gettext( ) around
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each one is a long task ( that is why _( ) was introduced ), so just choose
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a shorter name for gettext:
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@code
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use Wx::Locale 'gettext' = 't',
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'gettext_noop' = 'gettext_noop';
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# ...
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# use the functions
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print t( "Panic!!" );
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# ...
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@endcode
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@endWxPerlOnly
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@library{wxbase}
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@category{cfg}
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@see @ref overview_i18n, @ref page_samples_internat, wxXLocale, wxTranslations
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*/
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enum wxLocaleInitFlags
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{
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wxLOCALE_DONT_LOAD_DEFAULT = 0x0000, ///< Don't load wxstd.mo catalog.
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wxLOCALE_LOAD_DEFAULT = 0x0001 ///< Load wxstd.mo (done by default).
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};
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class wxLocale
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{
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public:
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/**
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This is the default constructor and it does nothing to initialize the object:
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Init() must be used to do that.
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*/
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wxLocale();
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/**
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See Init() for parameters description.
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*/
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wxLocale(int language, int flags = wxLOCALE_LOAD_DEFAULT);
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/**
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See Init() for parameters description.
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The call of this function has several global side effects which you should
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understand: first of all, the application locale is changed - note that this
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will affect many of standard C library functions such as printf() or strftime().
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Second, this wxLocale object becomes the new current global locale for the
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application and so all subsequent calls to ::wxGetTranslation() will try to
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translate the messages using the message catalogs for this locale.
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*/
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wxLocale(const wxString& name,
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const wxString& shortName = wxEmptyString,
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const wxString& locale = wxEmptyString,
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bool bLoadDefault = true);
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/**
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The destructor, like the constructor, also has global side effects: the
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previously set locale is restored and so the changes described in
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Init() documentation are rolled back.
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*/
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virtual ~wxLocale();
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/**
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Calls wxTranslations::AddCatalog(const wxString&).
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*/
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bool AddCatalog(const wxString& domain);
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/**
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Calls wxTranslations::AddCatalog(const wxString&, wxLanguage).
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*/
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bool AddCatalog(const wxString& domain, wxLanguage msgIdLanguage);
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/**
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Calls wxTranslations::AddCatalog(const wxString&, wxLanguage, const wxString&).
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*/
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bool AddCatalog(const wxString& domain, wxLanguage msgIdLanguage,
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const wxString& msgIdCharset);
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/**
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Calls wxFileTranslationsLoader::AddCatalogLookupPathPrefix().
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*/
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static void AddCatalogLookupPathPrefix(const wxString& prefix);
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/**
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Adds custom, user-defined language to the database of known languages.
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This database is used in conjunction with the first form of Init().
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*/
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static void AddLanguage(const wxLanguageInfo& info);
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/**
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This function may be used to find the language description structure for the
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given locale, specified either as a two letter ISO language code (for example,
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"pt"), a language code followed by the country code ("pt_BR") or a full, human
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readable, language description ("Portuguese-Brazil").
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Returns the information for the given language or @NULL if this language
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is unknown. Note that even if the returned pointer is valid, the caller
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should @e not delete it.
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@see GetLanguageInfo()
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*/
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static const wxLanguageInfo* FindLanguageInfo(const wxString& locale);
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/**
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Returns the canonical form of current locale name. Canonical form is the
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one that is used on UNIX systems: it is a two- or five-letter string in xx or
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xx_YY format, where xx is ISO 639 code of language and YY is ISO 3166 code of
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the country. Examples are "en", "en_GB", "en_US" or "fr_FR".
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This form is internally used when looking up message catalogs.
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Compare GetSysName().
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*/
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wxString GetCanonicalName() const;
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/**
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Calls wxTranslations::GetHeaderValue().
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*/
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wxString GetHeaderValue(const wxString& header,
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const wxString& domain = wxEmptyString) const;
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/**
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Returns the ::wxLanguage constant of current language.
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Note that you can call this function only if you used the form of
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Init() that takes ::wxLanguage argument.
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*/
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int GetLanguage() const;
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/**
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Returns a pointer to wxLanguageInfo structure containing information about
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the given language or @NULL if this language is unknown. Note that even if
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the returned pointer is valid, the caller should @e not delete it.
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See AddLanguage() for the wxLanguageInfo description.
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As with Init(), @c wxLANGUAGE_DEFAULT has the special meaning if passed
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as an argument to this function and in this case the result of
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GetSystemLanguage() is used.
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*/
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static const wxLanguageInfo* GetLanguageInfo(int lang);
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/**
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Returns English name of the given language or empty string if this
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language is unknown.
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See GetLanguageInfo() for a remark about special meaning of @c wxLANGUAGE_DEFAULT.
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*/
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static wxString GetLanguageName(int lang);
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/**
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Returns canonical name (see GetCanonicalName()) of the given language
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or empty string if this language is unknown.
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See GetLanguageInfo() for a remark about special meaning of @c wxLANGUAGE_DEFAULT.
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@since 2.9.1
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*/
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static wxString GetLanguageCanonicalName(int lang);
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/**
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Returns the locale name as passed to the constructor or Init().
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This is a full, human-readable name, e.g. "English" or "French".
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*/
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const wxString& GetLocale() const;
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/**
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Returns the current short name for the locale (as given to the constructor or
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the Init() function).
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*/
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const wxString& GetName() const;
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/**
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Calls wxGetTranslation(const wxString&, const wxString&).
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*/
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const wxString& GetString(const wxString& origString,
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const wxString& domain = wxEmptyString) const;
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/**
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Calls wxGetTranslation(const wxString&, const wxString&, unsigned, const wxString&).
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*/
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const wxString& GetString(const wxString& origString,
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const wxString& origString2, unsigned n,
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const wxString& domain = wxEmptyString) const;
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/**
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Returns current platform-specific locale name as passed to setlocale().
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Compare GetCanonicalName().
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*/
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wxString GetSysName() const;
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/**
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Tries to detect the user's default font encoding.
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Returns wxFontEncoding() value or @c wxFONTENCODING_SYSTEM if it
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couldn't be determined.
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*/
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static wxFontEncoding GetSystemEncoding();
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/**
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Tries to detect the name of the user's default font encoding.
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This string isn't particularly useful for the application as its form is
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platform-dependent and so you should probably use GetSystemEncoding() instead.
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Returns a user-readable string value or an empty string if it couldn't be
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determined.
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*/
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static wxString GetSystemEncodingName();
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/**
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Tries to detect the user's default locale setting.
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Returns the ::wxLanguage value or @c wxLANGUAGE_UNKNOWN if the language-guessing
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algorithm failed.
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@note This function works with @em locales and returns the user's default
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locale. This may be, and usually is, the same as their preferred UI
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language, but it's not the same thing. Use wxTranslation to obtain
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@em language information.
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@see wxTranslations::GetBestTranslation().
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*/
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static int GetSystemLanguage();
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/**
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Get the values of the given locale-dependent datum.
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This function returns the value of the locale-specific option specified
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by the given @a index.
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@param index
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One of the elements of wxLocaleInfo enum.
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@param cat
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The category to use with the given index or wxLOCALE_CAT_DEFAULT if
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the index can only apply to a single category.
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@return
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The option value or empty string if the function failed.
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*/
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static wxString GetInfo(wxLocaleInfo index,
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wxLocaleCategory cat = wxLOCALE_CAT_DEFAULT);
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/**
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Initializes the wxLocale instance.
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The call of this function has several global side effects which you should
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understand: first of all, the application locale is changed - note that
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this will affect many of standard C library functions such as printf()
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or strftime().
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Second, this wxLocale object becomes the new current global locale for
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the application and so all subsequent calls to wxGetTranslation() will
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try to translate the messages using the message catalogs for this locale.
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@param language
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::wxLanguage identifier of the locale.
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@c wxLANGUAGE_DEFAULT has special meaning -- wxLocale will use system's
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default language (see GetSystemLanguage()).
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@param flags
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Combination of the following:
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- wxLOCALE_LOAD_DEFAULT: Load the message catalog for the given locale
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containing the translations of standard wxWidgets messages
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automatically.
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- wxLOCALE_DONT_LOAD_DEFAULT: Negation of wxLOCALE_LOAD_DEFAULT.
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@return @true on success or @false if the given locale couldn't be set.
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*/
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bool Init(int language = wxLANGUAGE_DEFAULT,
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int flags = wxLOCALE_LOAD_DEFAULT);
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/**
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@deprecated
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This form is deprecated, use the other one unless you know what you are doing.
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@param name
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The name of the locale. Only used in diagnostic messages.
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@param shortName
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The standard 2 letter locale abbreviation; it is used as the
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directory prefix when looking for the message catalog files.
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@param locale
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The parameter for the call to setlocale().
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Note that it is platform-specific.
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@param bLoadDefault
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May be set to @false to prevent loading of the message catalog for the
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given locale containing the translations of standard wxWidgets messages.
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This parameter would be rarely used in normal circumstances.
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*/
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bool Init(const wxString& name, const wxString& shortName = wxEmptyString,
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const wxString& locale = wxEmptyString, bool bLoadDefault = true);
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/**
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Check whether the operating system and/or C run time environment supports
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this locale. For example in Windows 2000 and Windows XP, support for many
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locales is not installed by default. Returns @true if the locale is
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supported.
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The argument @a lang is the ::wxLanguage identifier. To obtain this for a
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given a two letter ISO language code, use FindLanguageInfo() to obtain its
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wxLanguageInfo structure.
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See AddLanguage() for the wxLanguageInfo description.
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@since 2.7.1.
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*/
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static bool IsAvailable(int lang);
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/**
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Calls wxTranslations::IsLoaded().
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*/
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bool IsLoaded(const wxString& domain) const;
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/**
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Returns @true if the locale could be set successfully.
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*/
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bool IsOk() const;
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};
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/**
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Get the current locale object (note that it may be NULL!)
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*/
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wxLocale* wxGetLocale();
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