1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/fontenumcmn.cpp
3 // Purpose: wxFontEnumerator class
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 7/5/2006
7 // RCS-ID: $Id: fontenumcmn.cpp 43727 2006-12-01 10:14:28Z VS $
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 #include "wx/fontenum.h"
28
29 // ============================================================================
30 // implementation
31 // ============================================================================
32
33 // A simple wxFontEnumerator which doesn't perform any filtering and
34 // just returns all facenames and encodings found in the system
35 class WXDLLEXPORT wxSimpleFontEnumerator : public wxFontEnumerator
36 {
37 public:
wxSimpleFontEnumerator()38 wxSimpleFontEnumerator() { }
39
40 // called by EnumerateFacenames
OnFacename(const wxString & facename)41 virtual bool OnFacename(const wxString& facename)
42 {
43 m_arrFacenames.Add(facename);
44 return true;
45 }
46
47 // called by EnumerateEncodings
OnFontEncoding(const wxString & WXUNUSED (facename),const wxString & encoding)48 virtual bool OnFontEncoding(const wxString& WXUNUSED(facename),
49 const wxString& encoding)
50 {
51 m_arrEncodings.Add(encoding);
52 return true;
53 }
54
55 public:
56 wxArrayString m_arrFacenames, m_arrEncodings;
57 };
58
59
60 /* static */
GetFacenames(wxFontEncoding encoding,bool fixedWidthOnly)61 wxArrayString wxFontEnumerator::GetFacenames(wxFontEncoding encoding, bool fixedWidthOnly)
62 {
63 wxSimpleFontEnumerator temp;
64 temp.EnumerateFacenames(encoding, fixedWidthOnly);
65 return temp.m_arrFacenames;
66 }
67
68 /* static */
GetEncodings(const wxString & facename)69 wxArrayString wxFontEnumerator::GetEncodings(const wxString& facename)
70 {
71 wxSimpleFontEnumerator temp;
72 temp.EnumerateEncodings(facename);
73 return temp.m_arrEncodings;
74 }
75
76 /* static */
IsValidFacename(const wxString & facename)77 bool wxFontEnumerator::IsValidFacename(const wxString &facename)
78 {
79 // we cache the result of wxFontEnumerator::GetFacenames supposing that
80 // the array of face names won't change in the session of this program
81 static wxArrayString s_arr = wxFontEnumerator::GetFacenames();
82
83 #ifdef __WXMSW__
84 // Quoting the MSDN:
85 // "MS Shell Dlg is a mapping mechanism that enables
86 // U.S. English Microsoft Windows NT, and Microsoft Windows 2000 to
87 // support locales that have characters that are not contained in code
88 // page 1252. It is not a font but a face name for a nonexistent font."
89 // Thus we need to consider "Ms Shell Dlg" and "Ms Shell Dlg 2" as valid
90 // font face names even if they are enumerated by wxFontEnumerator
91 if (facename.IsSameAs(wxT("Ms Shell Dlg"), false) ||
92 facename.IsSameAs(wxT("Ms Shell Dlg 2"), false))
93 return true;
94 #endif
95
96 // is given font face name a valid one ?
97 if (s_arr.Index(facename, false) == wxNOT_FOUND)
98 return false;
99
100 return true;
101 }
102
103 #ifdef wxHAS_UTF8_FONTS
EnumerateEncodingsUTF8(const wxString & facename)104 bool wxFontEnumerator::EnumerateEncodingsUTF8(const wxString& facename)
105 {
106 // name of UTF-8 encoding: no need to use wxFontMapper for it as it's
107 // unlikely to change
108 const wxString utf8(_T("UTF-8"));
109
110 // all fonts are in UTF-8 only if this code is used
111 if ( !facename.empty() )
112 {
113 OnFontEncoding(facename, utf8);
114 return true;
115 }
116
117 // so enumerating all facenames supporting this encoding is the same as
118 // enumerating all facenames
119 const wxArrayString facenames(GetFacenames(wxFONTENCODING_UTF8));
120 const size_t count = facenames.size();
121 if ( !count )
122 return false;
123
124 for ( size_t n = 0; n < count; n++ )
125 {
126 OnFontEncoding(facenames[n], utf8);
127 }
128
129 return true;
130 }
131 #endif // wxHAS_UTF8_FONTS
132