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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: msw/fontenum.cpp | |
3 | // Purpose: wxFontEnumerator class for Windows | |
4 | // Author: Julian Smart | |
5 | // Modified by: Vadim Zeitlin to add support for font encodings | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #ifdef __GNUG__ | |
21 | #pragma implementation "fontenum.h" | |
22 | #endif | |
23 | ||
24 | // For compilers that support precompilation, includes "wx.h". | |
25 | #include "wx/wxprec.h" | |
26 | ||
27 | #ifdef __BORLANDC__ | |
28 | #pragma hdrstop | |
29 | #endif | |
30 | ||
31 | #if wxUSE_FONTMAP | |
32 | ||
33 | #ifndef WX_PRECOMP | |
34 | #include "wx/font.h" | |
35 | #endif | |
36 | ||
37 | #include "wx/fontutil.h" | |
38 | #include "wx/fontenum.h" | |
39 | #include "wx/fontmap.h" | |
40 | ||
41 | #include "wx/msw/private.h" | |
42 | ||
43 | // ---------------------------------------------------------------------------- | |
44 | // private classes | |
45 | // ---------------------------------------------------------------------------- | |
46 | ||
47 | // the helper class which calls ::EnumFontFamilies() and whose OnFont() is | |
48 | // called from the callback passed to this function and, in its turn, calls the | |
49 | // appropariate wxFontEnumerator method | |
50 | class wxFontEnumeratorHelper | |
51 | { | |
52 | public: | |
53 | wxFontEnumeratorHelper(wxFontEnumerator *fontEnum); | |
54 | ||
55 | // control what exactly are we enumerating | |
56 | // we enumerate fonts with given enocding | |
57 | bool SetEncoding(wxFontEncoding encoding); | |
58 | // we enumerate fixed-width fonts | |
59 | void SetFixedOnly(bool fixedOnly) { m_fixedOnly = fixedOnly; } | |
60 | // we enumerate the encodings available in this family | |
61 | void SetFamily(const wxString& family); | |
62 | ||
63 | // call to start enumeration | |
64 | void DoEnumerate(); | |
65 | ||
66 | // called by our font enumeration proc | |
67 | bool OnFont(const LPLOGFONT lf, const LPTEXTMETRIC tm) const; | |
68 | ||
69 | private: | |
70 | // the object we forward calls to OnFont() to | |
71 | wxFontEnumerator *m_fontEnum; | |
72 | ||
73 | // if != -1, enum only fonts which have this encoding | |
74 | int m_charset; | |
75 | ||
76 | // if not empty, enum only the fonts with this facename | |
77 | wxString m_facename; | |
78 | ||
79 | // if not empty, enum only the fonts in this family | |
80 | wxString m_family; | |
81 | ||
82 | // if TRUE, enum only fixed fonts | |
83 | bool m_fixedOnly; | |
84 | ||
85 | // if TRUE, we enumerate the encodings, not fonts | |
86 | bool m_enumEncodings; | |
87 | ||
88 | // the list of charsets we already found while enumerating charsets | |
89 | wxArrayInt m_charsets; | |
90 | ||
91 | // the list of facenames we already found while enumerating facenames | |
92 | wxArrayString m_facenames; | |
93 | }; | |
94 | ||
95 | // ---------------------------------------------------------------------------- | |
96 | // private functions | |
97 | // ---------------------------------------------------------------------------- | |
98 | ||
99 | #ifndef __WXMICROWIN__ | |
100 | int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm, | |
101 | DWORD dwStyle, LONG lParam); | |
102 | #endif | |
103 | ||
104 | // ============================================================================ | |
105 | // implementation | |
106 | // ============================================================================ | |
107 | ||
108 | // ---------------------------------------------------------------------------- | |
109 | // wxFontEnumeratorHelper | |
110 | // ---------------------------------------------------------------------------- | |
111 | ||
112 | wxFontEnumeratorHelper::wxFontEnumeratorHelper(wxFontEnumerator *fontEnum) | |
113 | { | |
114 | m_fontEnum = fontEnum; | |
115 | m_charset = DEFAULT_CHARSET; | |
116 | m_fixedOnly = FALSE; | |
117 | m_enumEncodings = FALSE; | |
118 | } | |
119 | ||
120 | void wxFontEnumeratorHelper::SetFamily(const wxString& family) | |
121 | { | |
122 | m_enumEncodings = TRUE; | |
123 | m_family = family; | |
124 | } | |
125 | ||
126 | bool wxFontEnumeratorHelper::SetEncoding(wxFontEncoding encoding) | |
127 | { | |
128 | if ( encoding != wxFONTENCODING_SYSTEM ) | |
129 | { | |
130 | wxNativeEncodingInfo info; | |
131 | if ( !wxGetNativeFontEncoding(encoding, &info) ) | |
132 | { | |
133 | #if wxUSE_FONTMAP | |
134 | if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) ) | |
135 | #endif // wxUSE_FONTMAP | |
136 | { | |
137 | // no such encodings at all | |
138 | return FALSE; | |
139 | } | |
140 | } | |
141 | ||
142 | m_charset = info.charset; | |
143 | m_facename = info.facename; | |
144 | } | |
145 | ||
146 | return TRUE; | |
147 | } | |
148 | ||
149 | #if defined(__GNUWIN32__) && !defined(__CYGWIN10__) | |
150 | #if wxUSE_NORLANDER_HEADERS | |
151 | #define wxFONTENUMPROC int(*)(const LOGFONT *, const TEXTMETRIC *, long unsigned int, LPARAM) | |
152 | #else | |
153 | #define wxFONTENUMPROC int(*)(ENUMLOGFONTEX *, NEWTEXTMETRICEX*, int, LPARAM) | |
154 | #endif | |
155 | #else | |
156 | #define wxFONTENUMPROC FONTENUMPROC | |
157 | #endif | |
158 | ||
159 | void wxFontEnumeratorHelper::DoEnumerate() | |
160 | { | |
161 | #ifndef __WXMICROWIN__ | |
162 | HDC hDC = ::GetDC(NULL); | |
163 | ||
164 | #ifdef __WIN32__ | |
165 | LOGFONT lf; | |
166 | lf.lfCharSet = m_charset; | |
167 | wxStrncpy(lf.lfFaceName, m_facename, WXSIZEOF(lf.lfFaceName)); | |
168 | lf.lfPitchAndFamily = 0; | |
169 | ::EnumFontFamiliesEx(hDC, &lf, (wxFONTENUMPROC)wxFontEnumeratorProc, | |
170 | (LPARAM)this, 0 /* reserved */) ; | |
171 | #else // Win16 | |
172 | ::EnumFonts(hDC, (LPTSTR)NULL, (FONTENUMPROC)wxFontEnumeratorProc, | |
173 | #ifdef STRICT | |
174 | (LPARAM) | |
175 | #else | |
176 | (LPSTR) | |
177 | #endif | |
178 | this); | |
179 | #endif // Win32/16 | |
180 | ||
181 | ::ReleaseDC(NULL, hDC); | |
182 | #endif | |
183 | } | |
184 | ||
185 | bool wxFontEnumeratorHelper::OnFont(const LPLOGFONT lf, | |
186 | const LPTEXTMETRIC tm) const | |
187 | { | |
188 | if ( m_enumEncodings ) | |
189 | { | |
190 | // is this a new charset? | |
191 | int cs = lf->lfCharSet; | |
192 | if ( m_charsets.Index(cs) == wxNOT_FOUND ) | |
193 | { | |
194 | wxConstCast(this, wxFontEnumeratorHelper)->m_charsets.Add(cs); | |
195 | ||
196 | wxFontEncoding enc = wxGetFontEncFromCharSet(cs); | |
197 | return m_fontEnum->OnFontEncoding(lf->lfFaceName, | |
198 | wxFontMapper::GetEncodingName(enc)); | |
199 | } | |
200 | else | |
201 | { | |
202 | // continue enumeration | |
203 | return TRUE; | |
204 | } | |
205 | } | |
206 | ||
207 | if ( m_fixedOnly ) | |
208 | { | |
209 | // check that it's a fixed pitch font (there is *no* error here, the | |
210 | // flag name is misleading!) | |
211 | if ( tm->tmPitchAndFamily & TMPF_FIXED_PITCH ) | |
212 | { | |
213 | // not a fixed pitch font | |
214 | return TRUE; | |
215 | } | |
216 | } | |
217 | ||
218 | if ( m_charset != DEFAULT_CHARSET ) | |
219 | { | |
220 | // check that we have the right encoding | |
221 | if ( lf->lfCharSet != m_charset ) | |
222 | { | |
223 | return TRUE; | |
224 | } | |
225 | } | |
226 | else // enumerating fonts in all charsets | |
227 | { | |
228 | // we can get the same facename twice or more in this case because it | |
229 | // may exist in several charsets but we only want to return one copy of | |
230 | // it (note that this can't happen for m_charset != DEFAULT_CHARSET) | |
231 | if ( m_facenames.Index(lf->lfFaceName) != wxNOT_FOUND ) | |
232 | { | |
233 | // continue enumeration | |
234 | return TRUE; | |
235 | } | |
236 | ||
237 | wxConstCast(this, wxFontEnumeratorHelper)-> | |
238 | m_facenames.Add(lf->lfFaceName); | |
239 | } | |
240 | ||
241 | return m_fontEnum->OnFacename(lf->lfFaceName); | |
242 | } | |
243 | ||
244 | // ---------------------------------------------------------------------------- | |
245 | // wxFontEnumerator | |
246 | // ---------------------------------------------------------------------------- | |
247 | ||
248 | bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding, | |
249 | bool fixedWidthOnly) | |
250 | { | |
251 | wxFontEnumeratorHelper fe(this); | |
252 | if ( fe.SetEncoding(encoding) ) | |
253 | { | |
254 | fe.SetFixedOnly(fixedWidthOnly); | |
255 | ||
256 | fe.DoEnumerate(); | |
257 | } | |
258 | // else: no such fonts, unknown encoding | |
259 | ||
260 | return TRUE; | |
261 | } | |
262 | ||
263 | bool wxFontEnumerator::EnumerateEncodings(const wxString& family) | |
264 | { | |
265 | wxFontEnumeratorHelper fe(this); | |
266 | fe.SetFamily(family); | |
267 | fe.DoEnumerate(); | |
268 | ||
269 | return TRUE; | |
270 | } | |
271 | ||
272 | // ---------------------------------------------------------------------------- | |
273 | // Windows callbacks | |
274 | // ---------------------------------------------------------------------------- | |
275 | ||
276 | #ifndef __WXMICROWIN__ | |
277 | int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm, | |
278 | DWORD dwStyle, LONG lParam) | |
279 | { | |
280 | // we used to process TrueType fonts only, but there doesn't seem to be any | |
281 | // reasons to restrict ourselves to them here | |
282 | #if 0 | |
283 | // Get rid of any fonts that we don't want... | |
284 | if ( dwStyle != TRUETYPE_FONTTYPE ) | |
285 | { | |
286 | // continue enumeration | |
287 | return TRUE; | |
288 | } | |
289 | #endif // 0 | |
290 | ||
291 | wxFontEnumeratorHelper *fontEnum = (wxFontEnumeratorHelper *)lParam; | |
292 | ||
293 | return fontEnum->OnFont(lplf, lptm); | |
294 | } | |
295 | #endif | |
296 | ||
297 | #endif // wxUSE_FONTMAP |