// Modified by:
// Created: 04.11.99
// RCS-ID: $Id$
-// Copyright: (c) Vadim Zeitlin
-// Licence: wxWindows license
+// Copyright: (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
#pragma hdrstop
#endif
+#if wxUSE_FONTMAP
+
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/log.h"
#endif // PCH
#include "wx/fontmap.h"
-#include "wx/config.h"
+#include "wx/fmappriv.h"
+
+#if wxUSE_CONFIG
+ #include "wx/config.h"
+#endif // wxUSE_CONFIG
+
+#include "wx/fontutil.h"
+#include "wx/msgdlg.h"
+#include "wx/fontdlg.h"
#include "wx/choicdlg.h"
+#include "wx/encconv.h"
+
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// the config paths we use
-static const char* FONTMAPPER_ROOT_PATH = _T("FontMapper");
-static const char* FONTMAPPER_CHARSET_PATH = _T("Charsets");
-static const char* FONTMAPPER_CHARSET_ALIAS_PATH = _T("Aliases");
+#if wxUSE_CONFIG
+
+static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
+static const wxChar* FONTMAPPER_FONT_DONT_ASK = wxT("none");
+
+#endif // wxUSE_CONFIG
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// it may happen that while we're showing a dialog asking the user about
+// something, another request for an encoding mapping arrives: in this case it
+// is best to not do anything because otherwise we risk to enter an infinite
+// loop so we create an object of this class on stack to test for this in all
+// interactive functions
+class ReentrancyBlocker
+{
+public:
+ ReentrancyBlocker(bool& flag) : m_flagOld(flag), m_flag(flag)
+ { m_flag = true; }
+ ~ReentrancyBlocker() { m_flag = m_flagOld; }
+
+private:
+ bool m_flagOld;
+ bool& m_flag;
+};
// ============================================================================
// implementation
wxFontMapper::wxFontMapper()
{
- m_config = NULL;
m_windowParent = NULL;
}
{
}
-// ----------------------------------------------------------------------------
-// customisation
-// ----------------------------------------------------------------------------
-
-/* static */ const wxChar *wxFontMapper::GetDefaultConfigPath()
+wxFontEncoding
+wxFontMapper::CharsetToEncoding(const wxString& charset, bool interactive)
{
- return FONTMAPPER_ROOT_PATH;
-}
+ // try the ways not needing the users intervention first
+ wxFontEncoding
+ encoding = wxFontMapperBase::CharsetToEncoding(charset, interactive);
-void wxFontMapper::SetConfigPath(const wxString& prefix)
-{
- wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
- _T("an absolute path should be given to "
- "wxFontMapper::SetConfigPath()") );
+ // if we failed to find the encoding, ask the user -- unless disabled
+ if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
+ {
+ // prepare the dialog data
- m_configRootPath = prefix;
-}
+ // the dialog title
+ wxString title(m_titleDialog);
+ if ( !title )
+ title << wxTheApp->GetAppName() << _(": unknown charset");
+ // the message
+ wxString msg;
+ 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());
-// ----------------------------------------------------------------------------
-// get config object and path for it
-// ----------------------------------------------------------------------------
+ // the list of choices
+ const size_t count = GetSupportedEncodingsCount();
-wxConfigBase *wxFontMapper::GetConfig()
-{
- if ( !m_config )
- {
- // try the default
- m_config = wxConfig::Get();
+ wxString *encodingNamesTranslated = new wxString[count];
+
+ for ( size_t i = 0; i < count; i++ )
+ {
+ encodingNamesTranslated[i] = GetEncodingDescription(GetEncoding(i));
+ }
+
+ // the parent window
+ wxWindow *parent = m_windowParent;
+ if ( !parent )
+ parent = wxTheApp->GetTopWindow();
+
+ // do ask the user and get back the index in encodings table
+ int n = wxGetSingleChoiceIndex(msg, title,
+ count,
+ encodingNamesTranslated,
+ parent);
+
+ delete [] encodingNamesTranslated;
+
+ if ( n != -1 )
+ {
+ encoding = GetEncoding(n);
+ }
+
+#if wxUSE_CONFIG
+ // save the result in the config now
+ wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
+ if ( path.IsOk() )
+ {
+ wxConfigBase *config = GetConfig();
+
+ // remember the alt encoding for this charset -- or remember that
+ // we don't know it
+ long value = n == -1 ? wxFONTENCODING_UNKNOWN : (long)encoding;
+ if ( !config->Write(charset, value) )
+ {
+ wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset.c_str());
+ }
+ }
+#endif // wxUSE_CONFIG
}
- return m_config;
+ return encoding;
}
-const wxString& wxFontMapper::GetConfigPath()
+// ----------------------------------------------------------------------------
+// support for unknown encodings: we maintain a map between the
+// (platform-specific) strings identifying them and our wxFontEncodings they
+// correspond to which is used by GetFontForEncoding() function
+// ----------------------------------------------------------------------------
+
+bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
+ wxFontEncoding encReplacement,
+ wxNativeEncodingInfo *info)
{
- if ( !m_configRootPath )
+ if ( wxGetNativeFontEncoding(encReplacement, info) &&
+ wxTestFontEncoding(*info) )
{
- // use the default
- m_configRootPath = GetDefaultConfigPath();
+#if wxUSE_CONFIG
+ // remember the mapping in the config
+ wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
+
+ if ( path.IsOk() )
+ {
+ GetConfig()->Write(configEntry, info->ToString());
+ }
+#endif // wxUSE_CONFIG
+ return true;
}
- return m_configRootPath;
+ return false;
}
-bool wxFontMapper::ChangePath(const wxString& pathNew, wxString *pathOld)
+bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
+ wxNativeEncodingInfo *info,
+ const wxString& facename,
+ bool interactive)
{
- wxConfigBase *config = GetConfig();
- if ( !config )
- return FALSE;
+#if wxUSE_GUI
+ // we need a flag to prevent infinite recursion which happens, for
+ // example, when GetAltForEncoding() is called from an OnPaint() handler:
+ // in this case, wxYield() which is called from wxMessageBox() we use here
+ // will lead to another call of OnPaint() and hence to another call of
+ // GetAltForEncoding() -- and it is impossible to catch this from the user
+ // code because we are called from wxFont ctor implicitly.
- *pathOld = config->GetPath();
+ // assume we're always called from the main thread, so that it is safe to
+ // use a static var
+ static bool s_inGetAltForEncoding = false;
- wxString path = GetConfigPath();
- if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
- {
- path += wxCONFIG_PATH_SEPARATOR;
- }
+ if ( interactive && s_inGetAltForEncoding )
+ return false;
- wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR),
- _T("should be a relative path") );
+ ReentrancyBlocker blocker(s_inGetAltForEncoding);
+#endif // wxUSE_GUI
- path += pathNew;
+ wxCHECK_MSG( info, false, wxT("bad pointer in GetAltForEncoding") );
- config->SetPath(path);
+ info->facename = facename;
- return TRUE;
-}
+ if ( encoding == wxFONTENCODING_DEFAULT )
+ {
+ encoding = wxFont::GetDefaultEncoding();
+ }
-void wxFontMapper::RestorePath(const wxString& pathOld)
-{
- GetConfig()->SetPath(pathOld);
-}
+ // if we failed to load the system default encoding, something is really
+ // wrong and we'd better stop now -- otherwise we will go into endless
+ // recursion trying to create the font in the msg box with the error
+ // message
+ if ( encoding == wxFONTENCODING_SYSTEM )
+ {
+ wxLogFatalError(_("can't load any font, aborting"));
-// ----------------------------------------------------------------------------
-// charset/encoding correspondence
-// ----------------------------------------------------------------------------
+ // wxLogFatalError doesn't return
+ }
-wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset,
- bool interactive)
-{
- wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
+ wxString configEntry,
+ encName = GetEncodingName(encoding);
+ if ( !!facename )
+ {
+ configEntry = facename + _T("_");
+ }
+ configEntry += encName;
- // we're going to modify it, make a copy
- wxString cs = charset;
+#if wxUSE_CONFIG
+ // do we have a font spec for this encoding?
+ wxString fontinfo;
+ wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
+ if ( path.IsOk() )
+ {
+ fontinfo = GetConfig()->Read(configEntry);
+ }
- // first try the user-defined settings
- wxString pathOld;
- if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) )
+ // this special value means that we don't know of fonts for this
+ // encoding but, moreover, have already asked the user as well and he
+ // didn't specify any font neither
+ if ( fontinfo == FONTMAPPER_FONT_DONT_ASK )
+ {
+ interactive = false;
+ }
+ else // use the info entered the last time
{
- wxConfigBase *config = GetConfig();
+ if ( !!fontinfo && !!facename )
+ {
+ // we tried to find a match with facename -- now try without it
+ fontinfo = GetConfig()->Read(encName);
+ }
- // do we have an encoding for this charset?
- long value = config->Read(charset, -1l);
- if ( value != -1 )
+ if ( !!fontinfo )
{
- if ( value >= 0 && value <= wxFONTENCODING_MAX )
+ if ( info->FromString(fontinfo) )
{
- encoding = (wxFontEncoding)value;
+ if ( wxTestFontEncoding(*info) )
+ {
+ // ok, got something
+ return true;
+ }
+ //else: no such fonts, look for something else
+ // (should we erase the outdated value?)
}
else
{
- wxLogDebug(_T("corrupted config data - invalid encoding %ld "
- "for charset '%s'"), value, charset.c_str());
+ wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"),
+ fontinfo.c_str());
}
}
-
- if ( encoding == wxFONTENCODING_SYSTEM )
+ //else: there is no information in config about this encoding
+ }
+#endif // wxUSE_CONFIG
+
+ // now try to map this encoding to a compatible one which we have on this
+ // system
+ wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
+ size_t count = equiv.GetCount();
+ bool foundEquivEncoding = false;
+ wxFontEncoding equivEncoding = wxFONTENCODING_SYSTEM;
+ if ( count )
+ {
+ for ( size_t i = 0; i < count && !foundEquivEncoding; i++ )
{
- // may be we have an alias?
- config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
+ // don't test for encoding itself, we already know we don't have it
+ if ( equiv[i] == encoding )
+ continue;
- wxString alias = config->Read(charset);
- if ( !!alias )
+ if ( TestAltEncoding(configEntry, equiv[i], info) )
{
- // yes, we do - use it instead
- cs = alias;
+ equivEncoding = equiv[i];
+
+ foundEquivEncoding = true;
}
}
-
- RestorePath(pathOld);
}
- // if didn't find it there, try to reckognise it ourselves
- if ( encoding == wxFONTENCODING_SYSTEM )
+ // ask the user
+#if wxUSE_FONTDLG
+ if ( interactive )
{
- cs.MakeUpper();
+ wxString title(m_titleDialog);
+ if ( !title )
+ title << wxTheApp->GetAppName() << _(": unknown encoding");
+
+ // built the message
+ wxString encDesc = GetEncodingDescription(encoding),
+ msg;
+ if ( foundEquivEncoding )
+ {
+ // ask the user if he wants to override found alternative encoding
+ 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)?"),
+ encDesc.c_str(), GetEncodingDescription(equivEncoding).c_str());
+ }
+ else
+ {
+ 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)?"),
+ encDesc.c_str());
+ }
+
+ // the question is different in 2 cases so the answer has to be
+ // interpreted differently as well
+ int answer = foundEquivEncoding ? wxNO : wxYES;
- if ( !cs || cs == _T("US-ASCII") )
- encoding = wxFONTENCODING_DEFAULT;
- else if ( cs == _T("KOI8-R") || cs == _T("KOI8-U") )
- encoding = wxFONTENCODING_KOI8;
- else if ( cs.Left(3) == _T("ISO") )
+ if ( wxMessageBox(msg, title,
+ wxICON_QUESTION | wxYES_NO,
+ m_windowParent) == answer )
{
- // the dash is optional (or, to be exact, it is not, but
- // several brokenmails "forget" it)
- const wxChar *p = cs.c_str() + 3;
- if ( *p == _T('-') )
- p++;
-
- unsigned int value;
- if ( wxSscanf(p, _T("8859-%u"), &value) == 1 )
+ wxFontData data;
+ data.SetEncoding(encoding);
+ data.EncodingInfo() = *info;
+ wxFontDialog dialog(m_windowParent, data);
+ if ( dialog.ShowModal() == wxID_OK )
{
- if ( value < wxFONTENCODING_ISO8859_MAX -
- wxFONTENCODING_ISO8859_1 )
+ wxFontData retData = dialog.GetFontData();
+ wxFont font = retData.GetChosenFont();
+
+ *info = retData.EncodingInfo();
+ info->encoding = retData.GetEncoding();
+
+#if wxUSE_CONFIG
+ // remember this in the config
+ wxFontMapperPathChanger path(this,
+ FONTMAPPER_FONT_FROM_ENCODING_PATH);
+ if ( path.IsOk() )
{
- // it's a valid ISO8859 encoding
- value += wxFONTENCODING_ISO8859_1 - 1;
- encoding = (wxFontEncoding)value;
+ GetConfig()->Write(configEntry, info->ToString());
}
+#endif // wxUSE_CONFIG
+
+ return true;
}
+ //else: the user canceled the font selection dialog
}
- else if ( cs.Left(8) == _T("WINDOWS-") )
+ else
{
- int value;
- if ( wxSscanf(cs.c_str() + 8, "%u", &value) == 1 )
+ // the user doesn't want to select a font for this encoding
+ // or selected to use equivalent encoding
+ //
+ // remember it to avoid asking the same question again later
+#if wxUSE_CONFIG
+ wxFontMapperPathChanger path(this,
+ FONTMAPPER_FONT_FROM_ENCODING_PATH);
+ if ( path.IsOk() )
{
- if ( value >= 1250 )
- {
- value -= 1250;
- if ( value < wxFONTENCODING_CP12_MAX -
- wxFONTENCODING_CP1250 - 1 )
- {
- // a valid Windows code page
- value += wxFONTENCODING_CP1250;
- encoding = (wxFontEncoding)value;
- }
- }
+ GetConfig()->Write
+ (
+ configEntry,
+ foundEquivEncoding ? info->ToString().c_str()
+ : FONTMAPPER_FONT_DONT_ASK
+ );
}
+#endif // wxUSE_CONFIG
}
- //else: unknown
}
+ //else: we're in non-interactive mode
+#endif // wxUSE_FONTDLG
- // if still no luck, ask the user - unless disabled
- if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
- {
- // prepare the dialog data
-
- // the dialog title
- wxString title(m_titleDialog);
- if ( !title )
- title << wxTheApp->GetAppName() << _(": unknown charset");
-
- // the message
- wxString msg;
- msg.Printf(_("The charset '%s' is unknown. You may select another "
- "charset to replace it with or choose [Cancel] if it "
- "cannot be replaced"), charset.c_str());
-
- // the list of choices
- static wxFontEncoding encodings[] =
- {
- wxFONTENCODING_ISO8859_1,
- wxFONTENCODING_ISO8859_2,
- wxFONTENCODING_ISO8859_3,
- wxFONTENCODING_ISO8859_4,
- wxFONTENCODING_ISO8859_5,
- wxFONTENCODING_ISO8859_6,
- wxFONTENCODING_ISO8859_7,
- wxFONTENCODING_ISO8859_8,
- wxFONTENCODING_ISO8859_9,
- wxFONTENCODING_ISO8859_10,
- wxFONTENCODING_ISO8859_11,
- wxFONTENCODING_ISO8859_12,
- wxFONTENCODING_ISO8859_13,
- wxFONTENCODING_ISO8859_14,
- wxFONTENCODING_ISO8859_15,
- wxFONTENCODING_KOI8,
- wxFONTENCODING_CP1250,
- wxFONTENCODING_CP1251,
- wxFONTENCODING_CP1252,
- wxFONTENCODING_CP1253,
- wxFONTENCODING_CP1254,
- wxFONTENCODING_CP1255,
- wxFONTENCODING_CP1256,
- wxFONTENCODING_CP1257,
- };
-
- static const wxChar* encodingNames[] =
- {
- "West European (ISO-8859-1/Latin 1)",
- "Central European (ISO-8859-2/Latin 2)",
- "Esperanto (ISO-8859-3)",
- "Baltic (ISO-8859-4)",
- "Cyrillic (Latin 5)",
- "Arabic (ISO-8859-6)"
- "Greek (ISO-8859-7)",
- "Hebrew (ISO-8859-8)",
- "Turkish (ISO-8859-9)",
- "Baltic II (ISO-8859-10)",
- "Thai (ISO-8859-11)",
- "ISO-8859-12",
- "ISO-8859-13",
- "ISO-8859-14",
- "West European new (ISO-8859-15/Latin 0)",
- "KOI8-R",
- "Windows Latin 2 (CP 1250)",
- "Windows Cyrillic (CP 1251)",
- "Windows Latin 1 (CP 1252)",
- "Windows Greek (CP 1253)",
- "Windows Turkish (CP 1254)",
- "Windows Hebrew (CP 1255)",
- "Windows Arabic (CP 1256)",
- "Windows Baltic (CP 1257)",
- };
-
- size_t count = WXSIZEOF(encodingNames);
-
- wxASSERT_MSG( count == WXSIZEOF(encodings),
- _T("inconsitency detected - forgot to update one of "
- "the arrays?") );
+ return foundEquivEncoding;
+}
- wxString *encodingNamesTranslated = new wxString[count];
+bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
+ wxFontEncoding *encodingAlt,
+ const wxString& facename,
+ bool interactive)
+{
+ wxNativeEncodingInfo info;
+ if ( !GetAltForEncoding(encoding, &info, facename, interactive) )
+ return false;
- for ( size_t n = 0; n < count; n++ )
- {
- encodingNamesTranslated[n] = wxGetTranslation(encodingNames[n]);
- }
+ wxCHECK_MSG( encodingAlt, false,
+ _T("wxFontEncoding::GetAltForEncoding(): NULL pointer") );
- // the parent window
- wxWindow *parent = m_windowParent;
- if ( !parent )
- parent = wxTheApp->GetTopWindow();
+ *encodingAlt = info.encoding;
- // do ask the user and get back the index in encodings table
- int n = wxGetSingleChoiceIndex(msg, title,
- count,
- encodingNamesTranslated,
- parent);
+ return true;
+}
- delete [] encodingNamesTranslated;
+bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
+ const wxString& facename)
+{
+ wxNativeEncodingInfo info;
- if ( n != -1 )
- {
- encoding = encodings[n];
- }
- //else: cancelled
- }
+ if ( !wxGetNativeFontEncoding(encoding, &info) )
+ return false;
- return encoding;
+ info.facename = facename;
+ return wxTestFontEncoding(info);
}
+#endif // wxUSE_FONTMAP
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