3f8fd90c31
Unlike MSW and macOS, creating wxUILocale for e.g. "en" doesn't necessarily succeed under Linux even if "en_US" is available, so try to find a working language+region combination if just language doesn't work. This requires access to the languages database, so add a private wxGetLanguageInfos() to avoid having to depend on wxLocale just for this.
81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/private/uilocale.h
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// Purpose: wxUILocaleImpl class declaration
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// Author: Vadim Zeitlin
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// Created: 2021-08-01
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// Copyright: (c) 2021 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_PRIVATE_UILOCALE_H_
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#define _WX_PRIVATE_UILOCALE_H_
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#include "wx/localedefs.h"
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#include "wx/string.h"
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#include "wx/vector.h"
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typedef wxVector<wxLanguageInfo> wxLanguageInfos;
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// Return the vector of all known languages.
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const wxLanguageInfos& wxGetLanguageInfos();
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// Function returning hard-coded values for the "C" locale.
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wxString wxGetStdCLocaleInfo(wxLocaleInfo index, wxLocaleCategory cat);
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// ----------------------------------------------------------------------------
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// wxUILocaleImpl provides the implementation of public wxUILocale functions
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// ----------------------------------------------------------------------------
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class wxUILocaleImpl
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{
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public:
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// This function is implemented in platform-specific code and returns the
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// object used by default, i.e. if wxUILocale::UseDefault() is not called.
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// This object corresponds to the traditional "C" locale.
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//
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// It should never return NULL.
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static wxUILocaleImpl* CreateStdC();
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// Similarly, this one returns the object corresponding to the default user
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// locale settings which is used if wxUILocale::UseDefault() was called.
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//
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// It may return NULL in case of failure.
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static wxUILocaleImpl* CreateUserDefault();
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// Create locale object for the given locale.
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//
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// It may return NULL in case of failure.
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static wxUILocaleImpl* CreateForLocale(const wxLocaleIdent& locId);
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// This function exists only for wxLocale compatibility and creates the
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// locale corresponding to the given language.
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//
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// It is implemented in terms of CreateForLocale() for non-MSW platforms,
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// but under MSW it is different for compatibility reasons.
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//
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// The language passed to this function is a valid language, i.e. neither
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// wxLANGUAGE_UNKNOWN nor wxLANGUAGE_DEFAULT.
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//
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// It may return NULL in case of failure, but never does so for English
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// languages because wxLocale(wxLANGUAGE_ENGLISH) is always supposed to
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// work, so it just falls back on CreateStdC() if it fails to create it.
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static wxUILocaleImpl* CreateForLanguage(const wxLanguageInfo& info);
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// Use this locale in the UI.
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//
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// This is not implemented for all platforms, notably not for Mac where the
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// UI locale is determined at application startup, but we can't do anything
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// about it anyhow, so we don't even bother returning an error code from it.
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virtual void Use() = 0;
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// Functions corresponding to wxUILocale ones.
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virtual wxString GetName() const = 0;
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virtual wxString GetInfo(wxLocaleInfo index, wxLocaleCategory cat) const = 0;
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virtual int CompareStrings(const wxString& lhs, const wxString& rhs,
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int flags) const = 0;
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virtual ~wxUILocaleImpl() { }
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};
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#endif // _WX_PRIVATE_UILOCALE_H_
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