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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1440 8ced0084-cf51-0410-be5f-012b33b47a6e
520 lines
17 KiB
C++
520 lines
17 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/fontmap.cpp
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// Purpose: wxFontMapper class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 04.11.99
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// RCS-ID: $Id: fontmap.cpp 39651 2006-06-09 17:50:46Z ABX $
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// Copyright: (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_FONTMAP
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#include "wx/fontmap.h"
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#ifndef WX_PRECOMP
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#include "wx/app.h"
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#include "wx/log.h"
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#include "wx/intl.h"
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#include "wx/msgdlg.h"
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#include "wx/choicdlg.h"
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#endif // PCH
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#if wxUSE_CONFIG
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#include "wx/config.h"
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#endif // wxUSE_CONFIG
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#if defined(__WXMSW__)
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#include "wx/msw/private.h" // includes windows.h for LOGFONT
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#include "wx/msw/winundef.h"
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#endif
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#include "wx/fmappriv.h"
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#include "wx/fontutil.h"
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#include "wx/fontdlg.h"
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#include "wx/encinfo.h"
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#include "wx/encconv.h"
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#if wxUSE_EXTENDED_RTTI
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wxBEGIN_ENUM( wxFontEncoding )
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wxENUM_MEMBER( wxFONTENCODING_SYSTEM )
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wxENUM_MEMBER( wxFONTENCODING_DEFAULT )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_1 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_2 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_3 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_4 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_5 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_6 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_7 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_8 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_9 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_10 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_11 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_12 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_13 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_14 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_15 )
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wxENUM_MEMBER( wxFONTENCODING_ISO8859_MAX )
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wxENUM_MEMBER( wxFONTENCODING_KOI8 )
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wxENUM_MEMBER( wxFONTENCODING_KOI8_U )
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wxENUM_MEMBER( wxFONTENCODING_ALTERNATIVE )
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wxENUM_MEMBER( wxFONTENCODING_BULGARIAN )
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wxENUM_MEMBER( wxFONTENCODING_CP437 )
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wxENUM_MEMBER( wxFONTENCODING_CP850 )
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wxENUM_MEMBER( wxFONTENCODING_CP852 )
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wxENUM_MEMBER( wxFONTENCODING_CP855 )
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wxENUM_MEMBER( wxFONTENCODING_CP866 )
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wxENUM_MEMBER( wxFONTENCODING_CP874 )
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wxENUM_MEMBER( wxFONTENCODING_CP932 )
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wxENUM_MEMBER( wxFONTENCODING_CP936 )
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wxENUM_MEMBER( wxFONTENCODING_CP949 )
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wxENUM_MEMBER( wxFONTENCODING_CP950 )
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wxENUM_MEMBER( wxFONTENCODING_CP1250 )
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wxENUM_MEMBER( wxFONTENCODING_CP1251 )
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wxENUM_MEMBER( wxFONTENCODING_CP1252 )
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wxENUM_MEMBER( wxFONTENCODING_CP1253 )
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wxENUM_MEMBER( wxFONTENCODING_CP1254 )
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wxENUM_MEMBER( wxFONTENCODING_CP1255 )
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wxENUM_MEMBER( wxFONTENCODING_CP1256 )
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wxENUM_MEMBER( wxFONTENCODING_CP1257 )
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wxENUM_MEMBER( wxFONTENCODING_CP12_MAX )
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wxENUM_MEMBER( wxFONTENCODING_UTF7 )
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wxENUM_MEMBER( wxFONTENCODING_UTF8 )
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wxENUM_MEMBER( wxFONTENCODING_GB2312 )
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wxENUM_MEMBER( wxFONTENCODING_BIG5 )
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wxENUM_MEMBER( wxFONTENCODING_SHIFT_JIS )
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wxENUM_MEMBER( wxFONTENCODING_EUC_JP )
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wxENUM_MEMBER( wxFONTENCODING_UNICODE )
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wxEND_ENUM( wxFontEncoding )
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#endif
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// the config paths we use
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#if wxUSE_CONFIG
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static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
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static const wxChar* FONTMAPPER_FONT_DONT_ASK = wxT("none");
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#endif // wxUSE_CONFIG
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// it may happen that while we're showing a dialog asking the user about
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// something, another request for an encoding mapping arrives: in this case it
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// is best to not do anything because otherwise we risk to enter an infinite
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// loop so we create an object of this class on stack to test for this in all
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// interactive functions
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class ReentrancyBlocker
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{
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public:
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ReentrancyBlocker(bool& flag) : m_flagOld(flag), m_flag(flag)
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{ m_flag = true; }
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~ReentrancyBlocker() { m_flag = m_flagOld; }
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private:
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bool m_flagOld;
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bool& m_flag;
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DECLARE_NO_COPY_CLASS(ReentrancyBlocker)
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};
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// ctor and dtor
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// ----------------------------------------------------------------------------
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wxFontMapper::wxFontMapper()
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{
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m_windowParent = NULL;
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}
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wxFontMapper::~wxFontMapper()
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{
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}
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/* static */
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wxFontMapper *wxFontMapper::Get()
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{
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wxFontMapperBase *fontmapper = wxFontMapperBase::Get();
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wxASSERT_MSG( !fontmapper->IsDummy(),
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wxT("GUI code requested a wxFontMapper but we only have a wxFontMapperBase.") );
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// Now return it anyway because there's a chance the GUI code might just
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// only want to call wxFontMapperBase functions and it's better than
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// crashing by returning NULL
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return (wxFontMapper *)fontmapper;
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}
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wxFontEncoding
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wxFontMapper::CharsetToEncoding(const wxString& charset, bool interactive)
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{
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// try the ways not needing the users intervention first
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int encoding = wxFontMapperBase::NonInteractiveCharsetToEncoding(charset);
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// if we failed to find the encoding, ask the user -- unless disabled
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if ( encoding == wxFONTENCODING_UNKNOWN )
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{
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// this is the special value which disables asking the user (he had
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// chosen to suppress this the last time)
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encoding = wxFONTENCODING_SYSTEM;
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}
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#if wxUSE_CHOICEDLG
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else if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
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{
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// prepare the dialog data
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// the dialog title
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wxString title(m_titleDialog);
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if ( !title )
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title << wxTheApp->GetAppName() << _(": unknown charset");
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// the message
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wxString msg;
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msg.Printf(_("The charset '%s' is unknown. You may select\nanother charset to replace it with or choose\n[Cancel] if it cannot be replaced"), charset.c_str());
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// the list of choices
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const size_t count = GetSupportedEncodingsCount();
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wxString *encodingNamesTranslated = new wxString[count];
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for ( size_t i = 0; i < count; i++ )
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{
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encodingNamesTranslated[i] = GetEncodingDescription(GetEncoding(i));
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}
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// the parent window
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wxWindow *parent = m_windowParent;
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if ( !parent )
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parent = wxTheApp->GetTopWindow();
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// do ask the user and get back the index in encodings table
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int n = wxGetSingleChoiceIndex(msg, title,
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count,
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encodingNamesTranslated,
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parent);
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delete [] encodingNamesTranslated;
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if ( n != -1 )
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{
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encoding = GetEncoding(n);
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}
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#if wxUSE_CONFIG && wxUSE_FILECONFIG
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// save the result in the config now
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wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
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if ( path.IsOk() )
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{
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wxConfigBase *config = GetConfig();
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// remember the alt encoding for this charset -- or remember that
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// we don't know it
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long value = n == -1 ? (long)wxFONTENCODING_UNKNOWN : (long)encoding;
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if ( !config->Write(charset, value) )
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{
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wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset.c_str());
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}
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}
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#endif // wxUSE_CONFIG
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}
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#else
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wxUnusedVar(interactive);
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#endif // wxUSE_CHOICEDLG
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return (wxFontEncoding)encoding;
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}
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// ----------------------------------------------------------------------------
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// support for unknown encodings: we maintain a map between the
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// (platform-specific) strings identifying them and our wxFontEncodings they
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// correspond to which is used by GetFontForEncoding() function
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// ----------------------------------------------------------------------------
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bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
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wxFontEncoding encReplacement,
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wxNativeEncodingInfo *info)
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{
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if ( wxGetNativeFontEncoding(encReplacement, info) &&
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wxTestFontEncoding(*info) )
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{
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#if wxUSE_CONFIG && wxUSE_FILECONFIG
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// remember the mapping in the config
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wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
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if ( path.IsOk() )
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{
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GetConfig()->Write(configEntry, info->ToString());
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}
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#else
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wxUnusedVar(configEntry);
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#endif // wxUSE_CONFIG
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return true;
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}
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return false;
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}
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bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
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wxNativeEncodingInfo *info,
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const wxString& facename,
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bool interactive)
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{
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#if wxUSE_GUI
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// we need a flag to prevent infinite recursion which happens, for
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// example, when GetAltForEncoding() is called from an OnPaint() handler:
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// in this case, wxYield() which is called from wxMessageBox() we use here
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// will lead to another call of OnPaint() and hence to another call of
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// GetAltForEncoding() -- and it is impossible to catch this from the user
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// code because we are called from wxFont ctor implicitly.
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// assume we're always called from the main thread, so that it is safe to
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// use a static var
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static bool s_inGetAltForEncoding = false;
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if ( interactive && s_inGetAltForEncoding )
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return false;
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ReentrancyBlocker blocker(s_inGetAltForEncoding);
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#endif // wxUSE_GUI
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wxCHECK_MSG( info, false, wxT("bad pointer in GetAltForEncoding") );
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info->facename = facename;
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if ( encoding == wxFONTENCODING_DEFAULT )
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{
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encoding = wxFont::GetDefaultEncoding();
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}
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// if we failed to load the system default encoding, something is really
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// wrong and we'd better stop now -- otherwise we will go into endless
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// recursion trying to create the font in the msg box with the error
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// message
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if ( encoding == wxFONTENCODING_SYSTEM )
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{
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wxLogFatalError(_("can't load any font, aborting"));
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// wxLogFatalError doesn't return
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}
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wxString configEntry,
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encName = GetEncodingName(encoding);
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if ( !facename.empty() )
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{
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configEntry = facename + _T("_");
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}
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configEntry += encName;
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#if wxUSE_CONFIG && wxUSE_FILECONFIG
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// do we have a font spec for this encoding?
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wxString fontinfo;
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wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
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if ( path.IsOk() )
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{
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fontinfo = GetConfig()->Read(configEntry);
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}
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// this special value means that we don't know of fonts for this
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// encoding but, moreover, have already asked the user as well and he
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// didn't specify any font neither
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if ( fontinfo == FONTMAPPER_FONT_DONT_ASK )
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{
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interactive = false;
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}
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else // use the info entered the last time
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{
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if ( !fontinfo.empty() && !facename.empty() )
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{
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// we tried to find a match with facename -- now try without it
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fontinfo = GetConfig()->Read(encName);
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}
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if ( !fontinfo.empty() )
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{
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if ( info->FromString(fontinfo) )
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{
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if ( wxTestFontEncoding(*info) )
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{
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// ok, got something
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return true;
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}
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//else: no such fonts, look for something else
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// (should we erase the outdated value?)
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}
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else
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{
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wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"),
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fontinfo.c_str());
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}
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}
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//else: there is no information in config about this encoding
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}
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#endif // wxUSE_CONFIG
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// now try to map this encoding to a compatible one which we have on this
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// system
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wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
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size_t count = equiv.GetCount();
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bool foundEquivEncoding = false;
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wxFontEncoding equivEncoding = wxFONTENCODING_SYSTEM;
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if ( count )
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{
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for ( size_t i = 0; i < count && !foundEquivEncoding; i++ )
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{
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// don't test for encoding itself, we already know we don't have it
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if ( equiv[i] == encoding )
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continue;
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if ( TestAltEncoding(configEntry, equiv[i], info) )
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{
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equivEncoding = equiv[i];
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foundEquivEncoding = true;
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}
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}
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}
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// ask the user
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#if wxUSE_FONTDLG
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if ( interactive )
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{
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wxString title(m_titleDialog);
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if ( !title )
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title << wxTheApp->GetAppName() << _(": unknown encoding");
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// built the message
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wxString encDesc = GetEncodingDescription(encoding),
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msg;
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if ( foundEquivEncoding )
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{
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// ask the user if he wants to override found alternative encoding
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msg.Printf(_("No font for displaying text in encoding '%s' found,\nbut an alternative encoding '%s' is available.\nDo you want to use this encoding (otherwise you will have to choose another one)?"),
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encDesc.c_str(), GetEncodingDescription(equivEncoding).c_str());
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}
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else
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{
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msg.Printf(_("No font for displaying text in encoding '%s' found.\nWould you like to select a font to be used for this encoding\n(otherwise the text in this encoding will not be shown correctly)?"),
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encDesc.c_str());
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}
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// the question is different in 2 cases so the answer has to be
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// interpreted differently as well
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int answer = foundEquivEncoding ? wxNO : wxYES;
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if ( wxMessageBox(msg, title,
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wxICON_QUESTION | wxYES_NO,
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m_windowParent) == answer )
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{
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wxFontData data;
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data.SetEncoding(encoding);
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data.EncodingInfo() = *info;
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wxFontDialog dialog(m_windowParent, data);
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if ( dialog.ShowModal() == wxID_OK )
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{
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wxFontData retData = dialog.GetFontData();
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*info = retData.EncodingInfo();
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info->encoding = retData.GetEncoding();
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#if wxUSE_CONFIG && wxUSE_FILECONFIG
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// remember this in the config
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wxFontMapperPathChanger path2(this,
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FONTMAPPER_FONT_FROM_ENCODING_PATH);
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if ( path2.IsOk() )
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{
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GetConfig()->Write(configEntry, info->ToString());
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}
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#endif // wxUSE_CONFIG
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return true;
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}
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//else: the user canceled the font selection dialog
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}
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else
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{
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// the user doesn't want to select a font for this encoding
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// or selected to use equivalent encoding
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//
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// remember it to avoid asking the same question again later
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#if wxUSE_CONFIG && wxUSE_FILECONFIG
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wxFontMapperPathChanger path2(this,
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FONTMAPPER_FONT_FROM_ENCODING_PATH);
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if ( path2.IsOk() )
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{
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GetConfig()->Write
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(
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configEntry,
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foundEquivEncoding ? info->ToString().c_str()
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: FONTMAPPER_FONT_DONT_ASK
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);
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}
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#endif // wxUSE_CONFIG
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}
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}
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//else: we're in non-interactive mode
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#else
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wxUnusedVar(equivEncoding);
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#endif // wxUSE_FONTDLG
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return foundEquivEncoding;
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}
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bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
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wxFontEncoding *encodingAlt,
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const wxString& facename,
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bool interactive)
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{
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wxCHECK_MSG( encodingAlt, false,
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_T("wxFontEncoding::GetAltForEncoding(): NULL pointer") );
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wxNativeEncodingInfo info;
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if ( !GetAltForEncoding(encoding, &info, facename, interactive) )
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return false;
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*encodingAlt = info.encoding;
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return true;
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}
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bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
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const wxString& facename)
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{
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wxNativeEncodingInfo info;
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if ( !wxGetNativeFontEncoding(encoding, &info) )
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return false;
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info.facename = facename;
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return wxTestFontEncoding(info);
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}
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#endif // wxUSE_FONTMAP
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