/[pcsx2_0.9.7]/trunk/3rdparty/wxWidgets/src/common/fontmap.cpp
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Revision 31 - (hide annotations) (download)
Tue Sep 7 03:24:11 2010 UTC (10 years, 4 months ago) by william
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committing r3113 initial commit again...
1 william 31 /////////////////////////////////////////////////////////////////////////////
2     // Name: src/common/fontmap.cpp
3     // Purpose: wxFontMapper class
4     // Author: Vadim Zeitlin
5     // Modified by:
6     // Created: 04.11.99
7     // RCS-ID: $Id: fontmap.cpp 39651 2006-06-09 17:50:46Z ABX $
8     // Copyright: (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
9     // Licence: wxWindows licence
10     /////////////////////////////////////////////////////////////////////////////
11    
12     // ============================================================================
13     // declarations
14     // ============================================================================
15    
16     // ----------------------------------------------------------------------------
17     // headers
18     // ----------------------------------------------------------------------------
19    
20     // For compilers that support precompilation, includes "wx.h".
21     #include "wx/wxprec.h"
22    
23     #ifdef __BORLANDC__
24     #pragma hdrstop
25     #endif
26    
27     #if wxUSE_FONTMAP
28    
29     #include "wx/fontmap.h"
30    
31     #ifndef WX_PRECOMP
32     #include "wx/app.h"
33     #include "wx/log.h"
34     #include "wx/intl.h"
35     #include "wx/msgdlg.h"
36     #include "wx/choicdlg.h"
37     #endif // PCH
38    
39     #if wxUSE_CONFIG
40     #include "wx/config.h"
41     #endif // wxUSE_CONFIG
42    
43     #if defined(__WXMSW__)
44     #include "wx/msw/private.h" // includes windows.h for LOGFONT
45     #include "wx/msw/winundef.h"
46     #endif
47    
48     #include "wx/fmappriv.h"
49     #include "wx/fontutil.h"
50     #include "wx/fontdlg.h"
51     #include "wx/encinfo.h"
52    
53     #include "wx/encconv.h"
54    
55     #if wxUSE_EXTENDED_RTTI
56    
57     wxBEGIN_ENUM( wxFontEncoding )
58     wxENUM_MEMBER( wxFONTENCODING_SYSTEM )
59     wxENUM_MEMBER( wxFONTENCODING_DEFAULT )
60    
61     wxENUM_MEMBER( wxFONTENCODING_ISO8859_1 )
62     wxENUM_MEMBER( wxFONTENCODING_ISO8859_2 )
63     wxENUM_MEMBER( wxFONTENCODING_ISO8859_3 )
64     wxENUM_MEMBER( wxFONTENCODING_ISO8859_4 )
65     wxENUM_MEMBER( wxFONTENCODING_ISO8859_5 )
66     wxENUM_MEMBER( wxFONTENCODING_ISO8859_6 )
67     wxENUM_MEMBER( wxFONTENCODING_ISO8859_7 )
68     wxENUM_MEMBER( wxFONTENCODING_ISO8859_8 )
69     wxENUM_MEMBER( wxFONTENCODING_ISO8859_9 )
70     wxENUM_MEMBER( wxFONTENCODING_ISO8859_10 )
71     wxENUM_MEMBER( wxFONTENCODING_ISO8859_11 )
72     wxENUM_MEMBER( wxFONTENCODING_ISO8859_12 )
73     wxENUM_MEMBER( wxFONTENCODING_ISO8859_13 )
74     wxENUM_MEMBER( wxFONTENCODING_ISO8859_14 )
75     wxENUM_MEMBER( wxFONTENCODING_ISO8859_15 )
76     wxENUM_MEMBER( wxFONTENCODING_ISO8859_MAX )
77     wxENUM_MEMBER( wxFONTENCODING_KOI8 )
78     wxENUM_MEMBER( wxFONTENCODING_KOI8_U )
79     wxENUM_MEMBER( wxFONTENCODING_ALTERNATIVE )
80     wxENUM_MEMBER( wxFONTENCODING_BULGARIAN )
81     wxENUM_MEMBER( wxFONTENCODING_CP437 )
82     wxENUM_MEMBER( wxFONTENCODING_CP850 )
83     wxENUM_MEMBER( wxFONTENCODING_CP852 )
84     wxENUM_MEMBER( wxFONTENCODING_CP855 )
85     wxENUM_MEMBER( wxFONTENCODING_CP866 )
86    
87     wxENUM_MEMBER( wxFONTENCODING_CP874 )
88     wxENUM_MEMBER( wxFONTENCODING_CP932 )
89     wxENUM_MEMBER( wxFONTENCODING_CP936 )
90     wxENUM_MEMBER( wxFONTENCODING_CP949 )
91     wxENUM_MEMBER( wxFONTENCODING_CP950 )
92     wxENUM_MEMBER( wxFONTENCODING_CP1250 )
93     wxENUM_MEMBER( wxFONTENCODING_CP1251 )
94     wxENUM_MEMBER( wxFONTENCODING_CP1252 )
95     wxENUM_MEMBER( wxFONTENCODING_CP1253 )
96     wxENUM_MEMBER( wxFONTENCODING_CP1254 )
97     wxENUM_MEMBER( wxFONTENCODING_CP1255 )
98     wxENUM_MEMBER( wxFONTENCODING_CP1256 )
99     wxENUM_MEMBER( wxFONTENCODING_CP1257 )
100     wxENUM_MEMBER( wxFONTENCODING_CP12_MAX )
101     wxENUM_MEMBER( wxFONTENCODING_UTF7 )
102     wxENUM_MEMBER( wxFONTENCODING_UTF8 )
103     wxENUM_MEMBER( wxFONTENCODING_GB2312 )
104     wxENUM_MEMBER( wxFONTENCODING_BIG5 )
105     wxENUM_MEMBER( wxFONTENCODING_SHIFT_JIS )
106     wxENUM_MEMBER( wxFONTENCODING_EUC_JP )
107     wxENUM_MEMBER( wxFONTENCODING_UNICODE )
108     wxEND_ENUM( wxFontEncoding )
109     #endif
110    
111     // ----------------------------------------------------------------------------
112     // constants
113     // ----------------------------------------------------------------------------
114    
115     // the config paths we use
116     #if wxUSE_CONFIG
117    
118     static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
119     static const wxChar* FONTMAPPER_FONT_DONT_ASK = wxT("none");
120    
121     #endif // wxUSE_CONFIG
122    
123     // ----------------------------------------------------------------------------
124     // private classes
125     // ----------------------------------------------------------------------------
126    
127     // it may happen that while we're showing a dialog asking the user about
128     // something, another request for an encoding mapping arrives: in this case it
129     // is best to not do anything because otherwise we risk to enter an infinite
130     // loop so we create an object of this class on stack to test for this in all
131     // interactive functions
132     class ReentrancyBlocker
133     {
134     public:
135     ReentrancyBlocker(bool& flag) : m_flagOld(flag), m_flag(flag)
136     { m_flag = true; }
137     ~ReentrancyBlocker() { m_flag = m_flagOld; }
138    
139     private:
140     bool m_flagOld;
141     bool& m_flag;
142    
143     DECLARE_NO_COPY_CLASS(ReentrancyBlocker)
144     };
145    
146     // ============================================================================
147     // implementation
148     // ============================================================================
149    
150     // ----------------------------------------------------------------------------
151     // ctor and dtor
152     // ----------------------------------------------------------------------------
153    
154     wxFontMapper::wxFontMapper()
155     {
156     m_windowParent = NULL;
157     }
158    
159     wxFontMapper::~wxFontMapper()
160     {
161     }
162    
163     /* static */
164     wxFontMapper *wxFontMapper::Get()
165     {
166     wxFontMapperBase *fontmapper = wxFontMapperBase::Get();
167     wxASSERT_MSG( !fontmapper->IsDummy(),
168     wxT("GUI code requested a wxFontMapper but we only have a wxFontMapperBase.") );
169    
170     // Now return it anyway because there's a chance the GUI code might just
171     // only want to call wxFontMapperBase functions and it's better than
172     // crashing by returning NULL
173     return (wxFontMapper *)fontmapper;
174     }
175    
176     wxFontEncoding
177     wxFontMapper::CharsetToEncoding(const wxString& charset, bool interactive)
178     {
179     // try the ways not needing the users intervention first
180     int encoding = wxFontMapperBase::NonInteractiveCharsetToEncoding(charset);
181    
182     // if we failed to find the encoding, ask the user -- unless disabled
183     if ( encoding == wxFONTENCODING_UNKNOWN )
184     {
185     // this is the special value which disables asking the user (he had
186     // chosen to suppress this the last time)
187     encoding = wxFONTENCODING_SYSTEM;
188     }
189     #if wxUSE_CHOICEDLG
190     else if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
191     {
192     // prepare the dialog data
193    
194     // the dialog title
195     wxString title(m_titleDialog);
196     if ( !title )
197     title << wxTheApp->GetAppName() << _(": unknown charset");
198    
199     // the message
200     wxString msg;
201     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());
202    
203     // the list of choices
204     const size_t count = GetSupportedEncodingsCount();
205    
206     wxString *encodingNamesTranslated = new wxString[count];
207    
208     for ( size_t i = 0; i < count; i++ )
209     {
210     encodingNamesTranslated[i] = GetEncodingDescription(GetEncoding(i));
211     }
212    
213     // the parent window
214     wxWindow *parent = m_windowParent;
215     if ( !parent )
216     parent = wxTheApp->GetTopWindow();
217    
218     // do ask the user and get back the index in encodings table
219     int n = wxGetSingleChoiceIndex(msg, title,
220     count,
221     encodingNamesTranslated,
222     parent);
223    
224     delete [] encodingNamesTranslated;
225    
226     if ( n != -1 )
227     {
228     encoding = GetEncoding(n);
229     }
230    
231     #if wxUSE_CONFIG && wxUSE_FILECONFIG
232     // save the result in the config now
233     wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
234     if ( path.IsOk() )
235     {
236     wxConfigBase *config = GetConfig();
237    
238     // remember the alt encoding for this charset -- or remember that
239     // we don't know it
240     long value = n == -1 ? (long)wxFONTENCODING_UNKNOWN : (long)encoding;
241     if ( !config->Write(charset, value) )
242     {
243     wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset.c_str());
244     }
245     }
246     #endif // wxUSE_CONFIG
247     }
248     #else
249     wxUnusedVar(interactive);
250     #endif // wxUSE_CHOICEDLG
251    
252     return (wxFontEncoding)encoding;
253     }
254    
255     // ----------------------------------------------------------------------------
256     // support for unknown encodings: we maintain a map between the
257     // (platform-specific) strings identifying them and our wxFontEncodings they
258     // correspond to which is used by GetFontForEncoding() function
259     // ----------------------------------------------------------------------------
260    
261     bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
262     wxFontEncoding encReplacement,
263     wxNativeEncodingInfo *info)
264     {
265     if ( wxGetNativeFontEncoding(encReplacement, info) &&
266     wxTestFontEncoding(*info) )
267     {
268     #if wxUSE_CONFIG && wxUSE_FILECONFIG
269     // remember the mapping in the config
270     wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
271    
272     if ( path.IsOk() )
273     {
274     GetConfig()->Write(configEntry, info->ToString());
275     }
276     #else
277     wxUnusedVar(configEntry);
278     #endif // wxUSE_CONFIG
279     return true;
280     }
281    
282     return false;
283     }
284    
285     bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
286     wxNativeEncodingInfo *info,
287     const wxString& facename,
288     bool interactive)
289     {
290     #if wxUSE_GUI
291     // we need a flag to prevent infinite recursion which happens, for
292     // example, when GetAltForEncoding() is called from an OnPaint() handler:
293     // in this case, wxYield() which is called from wxMessageBox() we use here
294     // will lead to another call of OnPaint() and hence to another call of
295     // GetAltForEncoding() -- and it is impossible to catch this from the user
296     // code because we are called from wxFont ctor implicitly.
297    
298     // assume we're always called from the main thread, so that it is safe to
299     // use a static var
300     static bool s_inGetAltForEncoding = false;
301    
302     if ( interactive && s_inGetAltForEncoding )
303     return false;
304    
305     ReentrancyBlocker blocker(s_inGetAltForEncoding);
306     #endif // wxUSE_GUI
307    
308     wxCHECK_MSG( info, false, wxT("bad pointer in GetAltForEncoding") );
309    
310     info->facename = facename;
311    
312     if ( encoding == wxFONTENCODING_DEFAULT )
313     {
314     encoding = wxFont::GetDefaultEncoding();
315     }
316    
317     // if we failed to load the system default encoding, something is really
318     // wrong and we'd better stop now -- otherwise we will go into endless
319     // recursion trying to create the font in the msg box with the error
320     // message
321     if ( encoding == wxFONTENCODING_SYSTEM )
322     {
323     wxLogFatalError(_("can't load any font, aborting"));
324    
325     // wxLogFatalError doesn't return
326     }
327    
328     wxString configEntry,
329     encName = GetEncodingName(encoding);
330     if ( !facename.empty() )
331     {
332     configEntry = facename + _T("_");
333     }
334     configEntry += encName;
335    
336     #if wxUSE_CONFIG && wxUSE_FILECONFIG
337     // do we have a font spec for this encoding?
338     wxString fontinfo;
339     wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
340     if ( path.IsOk() )
341     {
342     fontinfo = GetConfig()->Read(configEntry);
343     }
344    
345     // this special value means that we don't know of fonts for this
346     // encoding but, moreover, have already asked the user as well and he
347     // didn't specify any font neither
348     if ( fontinfo == FONTMAPPER_FONT_DONT_ASK )
349     {
350     interactive = false;
351     }
352     else // use the info entered the last time
353     {
354     if ( !fontinfo.empty() && !facename.empty() )
355     {
356     // we tried to find a match with facename -- now try without it
357     fontinfo = GetConfig()->Read(encName);
358     }
359    
360     if ( !fontinfo.empty() )
361     {
362     if ( info->FromString(fontinfo) )
363     {
364     if ( wxTestFontEncoding(*info) )
365     {
366     // ok, got something
367     return true;
368     }
369     //else: no such fonts, look for something else
370     // (should we erase the outdated value?)
371     }
372     else
373     {
374     wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"),
375     fontinfo.c_str());
376     }
377     }
378     //else: there is no information in config about this encoding
379     }
380     #endif // wxUSE_CONFIG
381    
382     // now try to map this encoding to a compatible one which we have on this
383     // system
384     wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
385     size_t count = equiv.GetCount();
386     bool foundEquivEncoding = false;
387     wxFontEncoding equivEncoding = wxFONTENCODING_SYSTEM;
388     if ( count )
389     {
390     for ( size_t i = 0; i < count && !foundEquivEncoding; i++ )
391     {
392     // don't test for encoding itself, we already know we don't have it
393     if ( equiv[i] == encoding )
394     continue;
395    
396     if ( TestAltEncoding(configEntry, equiv[i], info) )
397     {
398     equivEncoding = equiv[i];
399    
400     foundEquivEncoding = true;
401     }
402     }
403     }
404    
405     // ask the user
406     #if wxUSE_FONTDLG
407     if ( interactive )
408     {
409     wxString title(m_titleDialog);
410     if ( !title )
411     title << wxTheApp->GetAppName() << _(": unknown encoding");
412    
413     // built the message
414     wxString encDesc = GetEncodingDescription(encoding),
415     msg;
416     if ( foundEquivEncoding )
417     {
418     // ask the user if he wants to override found alternative encoding
419     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)?"),
420     encDesc.c_str(), GetEncodingDescription(equivEncoding).c_str());
421     }
422     else
423     {
424     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)?"),
425     encDesc.c_str());
426     }
427    
428     // the question is different in 2 cases so the answer has to be
429     // interpreted differently as well
430     int answer = foundEquivEncoding ? wxNO : wxYES;
431    
432     if ( wxMessageBox(msg, title,
433     wxICON_QUESTION | wxYES_NO,
434     m_windowParent) == answer )
435     {
436     wxFontData data;
437     data.SetEncoding(encoding);
438     data.EncodingInfo() = *info;
439     wxFontDialog dialog(m_windowParent, data);
440     if ( dialog.ShowModal() == wxID_OK )
441     {
442     wxFontData retData = dialog.GetFontData();
443    
444     *info = retData.EncodingInfo();
445     info->encoding = retData.GetEncoding();
446    
447     #if wxUSE_CONFIG && wxUSE_FILECONFIG
448     // remember this in the config
449     wxFontMapperPathChanger path2(this,
450     FONTMAPPER_FONT_FROM_ENCODING_PATH);
451     if ( path2.IsOk() )
452     {
453     GetConfig()->Write(configEntry, info->ToString());
454     }
455     #endif // wxUSE_CONFIG
456    
457     return true;
458     }
459     //else: the user canceled the font selection dialog
460     }
461     else
462     {
463     // the user doesn't want to select a font for this encoding
464     // or selected to use equivalent encoding
465     //
466     // remember it to avoid asking the same question again later
467     #if wxUSE_CONFIG && wxUSE_FILECONFIG
468     wxFontMapperPathChanger path2(this,
469     FONTMAPPER_FONT_FROM_ENCODING_PATH);
470     if ( path2.IsOk() )
471     {
472     GetConfig()->Write
473     (
474     configEntry,
475     foundEquivEncoding ? info->ToString().c_str()
476     : FONTMAPPER_FONT_DONT_ASK
477     );
478     }
479     #endif // wxUSE_CONFIG
480     }
481     }
482     //else: we're in non-interactive mode
483     #else
484     wxUnusedVar(equivEncoding);
485     #endif // wxUSE_FONTDLG
486    
487     return foundEquivEncoding;
488     }
489    
490     bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
491     wxFontEncoding *encodingAlt,
492     const wxString& facename,
493     bool interactive)
494     {
495     wxCHECK_MSG( encodingAlt, false,
496     _T("wxFontEncoding::GetAltForEncoding(): NULL pointer") );
497    
498     wxNativeEncodingInfo info;
499     if ( !GetAltForEncoding(encoding, &info, facename, interactive) )
500     return false;
501    
502     *encodingAlt = info.encoding;
503    
504     return true;
505     }
506    
507     bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
508     const wxString& facename)
509     {
510     wxNativeEncodingInfo info;
511    
512     if ( !wxGetNativeFontEncoding(encoding, &info) )
513     return false;
514    
515     info.facename = facename;
516     return wxTestFontEncoding(info);
517     }
518    
519     #endif // wxUSE_FONTMAP

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