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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: unix/fontutil.cpp | |
3 | // Purpose: Font helper functions for X11 (GDK/X) | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 05.11.99 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Vadim Zeitlin | |
9 | // Licence: wxWindows license | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #ifdef __GNUG__ | |
21 | #pragma implementation "fontutil.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 | #ifndef WX_PRECOMP | |
32 | #endif // PCH | |
33 | ||
34 | #ifdef __X__ | |
35 | #include <X11/Xlib.h> | |
36 | ||
37 | #include "wx/utils.h" // for wxGetDisplay() | |
38 | #elif defined(__WXGTK__) | |
39 | #include "gdk/gdk.h" | |
40 | #endif | |
41 | ||
42 | #include "wx/fontutil.h" | |
43 | #include "wx/fontmap.h" | |
44 | #include "wx/tokenzr.h" | |
45 | ||
46 | // ---------------------------------------------------------------------------- | |
47 | // private functions | |
48 | // ---------------------------------------------------------------------------- | |
49 | ||
50 | // define the functions to create and destroy native fonts for this toolkit | |
51 | #ifdef __X__ | |
52 | static inline wxNativeFont wxLoadFont(const wxString& fontSpec) | |
53 | { | |
54 | return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec); | |
55 | } | |
56 | ||
57 | static inline void wxFreeFont(wxNativeFont font) | |
58 | { | |
59 | XFreeFont((Display *)wxGetDisplay(), font); | |
60 | } | |
61 | #elif defined(__WXGTK__) | |
62 | static inline wxNativeFont wxLoadFont(const wxString& fontSpec) | |
63 | { | |
64 | return gdk_font_load( wxConvertWX2MB(fontSpec) ); | |
65 | } | |
66 | ||
67 | static inline void wxFreeFont(wxNativeFont font) | |
68 | { | |
69 | gdk_font_unref(font); | |
70 | } | |
71 | #else | |
72 | #error "Unknown GUI toolkit" | |
73 | #endif | |
74 | ||
75 | static bool wxTestFontSpec(const wxString& fontspec); | |
76 | ||
77 | static wxNativeFont wxLoadQueryFont(int pointSize, | |
78 | int family, | |
79 | int style, | |
80 | int weight, | |
81 | bool underlined, | |
82 | const wxString& facename, | |
83 | const wxString& xregistry, | |
84 | const wxString& xencoding); | |
85 | ||
86 | // ============================================================================ | |
87 | // implementation | |
88 | // ============================================================================ | |
89 | ||
90 | // ---------------------------------------------------------------------------- | |
91 | // wxNativeEncodingInfo | |
92 | // ---------------------------------------------------------------------------- | |
93 | ||
94 | // convert to/from the string representation: format is | |
95 | // registry-encoding[-facename] | |
96 | bool wxNativeEncodingInfo::FromString(const wxString& s) | |
97 | { | |
98 | wxStringTokenizer tokenizer(s, _T("-")); | |
99 | ||
100 | xregistry = tokenizer.GetNextToken(); | |
101 | if ( !xregistry ) | |
102 | return FALSE; | |
103 | ||
104 | xencoding = tokenizer.GetNextToken(); | |
105 | if ( !xencoding ) | |
106 | return FALSE; | |
107 | ||
108 | // ok even if empty | |
109 | facename = tokenizer.GetNextToken(); | |
110 | ||
111 | return TRUE; | |
112 | } | |
113 | ||
114 | wxString wxNativeEncodingInfo::ToString() const | |
115 | { | |
116 | wxString s; | |
117 | s << xregistry << _T('-') << xencoding; | |
118 | if ( !!facename ) | |
119 | { | |
120 | s << _T('-') << facename; | |
121 | } | |
122 | ||
123 | return s; | |
124 | } | |
125 | ||
126 | // ---------------------------------------------------------------------------- | |
127 | // common functions | |
128 | // ---------------------------------------------------------------------------- | |
129 | ||
130 | bool wxGetNativeFontEncoding(wxFontEncoding encoding, | |
131 | wxNativeEncodingInfo *info) | |
132 | { | |
133 | wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") ); | |
134 | ||
135 | if ( encoding == wxFONTENCODING_DEFAULT ) | |
136 | { | |
137 | encoding = wxFont::GetDefaultEncoding(); | |
138 | } | |
139 | ||
140 | switch ( encoding ) | |
141 | { | |
142 | case wxFONTENCODING_ISO8859_1: | |
143 | case wxFONTENCODING_ISO8859_2: | |
144 | case wxFONTENCODING_ISO8859_3: | |
145 | case wxFONTENCODING_ISO8859_4: | |
146 | case wxFONTENCODING_ISO8859_5: | |
147 | case wxFONTENCODING_ISO8859_6: | |
148 | case wxFONTENCODING_ISO8859_7: | |
149 | case wxFONTENCODING_ISO8859_8: | |
150 | case wxFONTENCODING_ISO8859_9: | |
151 | case wxFONTENCODING_ISO8859_10: | |
152 | case wxFONTENCODING_ISO8859_11: | |
153 | case wxFONTENCODING_ISO8859_13: | |
154 | case wxFONTENCODING_ISO8859_14: | |
155 | case wxFONTENCODING_ISO8859_15: | |
156 | { | |
157 | int cp = encoding - wxFONTENCODING_ISO8859_1 + 1; | |
158 | info->xregistry = wxT("iso8859"); | |
159 | info->xencoding.Printf(wxT("%d"), cp); | |
160 | } | |
161 | break; | |
162 | ||
163 | case wxFONTENCODING_KOI8: | |
164 | info->xregistry = wxT("koi8"); | |
165 | ||
166 | // we don't make distinction between koi8-r and koi8-u (so far) | |
167 | info->xencoding = wxT("*"); | |
168 | break; | |
169 | ||
170 | case wxFONTENCODING_CP1250: | |
171 | case wxFONTENCODING_CP1251: | |
172 | case wxFONTENCODING_CP1252: | |
173 | case wxFONTENCODING_CP1253: | |
174 | case wxFONTENCODING_CP1254: | |
175 | case wxFONTENCODING_CP1255: | |
176 | case wxFONTENCODING_CP1256: | |
177 | case wxFONTENCODING_CP1257: | |
178 | { | |
179 | int cp = encoding - wxFONTENCODING_CP1250 + 1250; | |
180 | info->xregistry = wxT("microsoft"); | |
181 | info->xencoding.Printf(wxT("cp%d"), cp); | |
182 | } | |
183 | break; | |
184 | ||
185 | case wxFONTENCODING_SYSTEM: | |
186 | info->xregistry = | |
187 | info->xencoding = wxT("*"); | |
188 | break; | |
189 | ||
190 | default: | |
191 | // don't know how to translate this encoding into X fontspec | |
192 | return FALSE; | |
193 | } | |
194 | ||
195 | return TRUE; | |
196 | } | |
197 | ||
198 | bool wxTestFontEncoding(const wxNativeEncodingInfo& info) | |
199 | { | |
200 | wxString fontspec; | |
201 | fontspec.Printf(_T("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"), | |
202 | !info.facename ? _T("*") : info.facename.c_str(), | |
203 | info.xregistry.c_str(), | |
204 | info.xencoding.c_str()); | |
205 | ||
206 | return wxTestFontSpec(fontspec); | |
207 | } | |
208 | ||
209 | // ---------------------------------------------------------------------------- | |
210 | // X-specific functions | |
211 | // ---------------------------------------------------------------------------- | |
212 | ||
213 | wxNativeFont wxLoadQueryNearestFont(int pointSize, | |
214 | int family, | |
215 | int style, | |
216 | int weight, | |
217 | bool underlined, | |
218 | const wxString &facename, | |
219 | wxFontEncoding encoding) | |
220 | { | |
221 | // first determine the encoding - if the font doesn't exist at all in this | |
222 | // encoding, it's useless to do all other approximations (i.e. size, | |
223 | // family &c don't matter much) | |
224 | wxNativeEncodingInfo info; | |
225 | if (encoding == wxFONTENCODING_SYSTEM) | |
226 | { | |
227 | // This will always work so we don't test to save time | |
228 | wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info); | |
229 | } | |
230 | else | |
231 | { | |
232 | if ( !wxGetNativeFontEncoding(encoding, &info) || | |
233 | !wxTestFontEncoding(info) ) | |
234 | { | |
235 | if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) ) | |
236 | { | |
237 | // unspported encoding - replace it with the default | |
238 | // | |
239 | // NB: we can't just return 0 from here because wxGTK code doesn't | |
240 | // check for it (i.e. it supposes that we'll always succeed), | |
241 | // so it would provoke a crash | |
242 | wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info); | |
243 | } | |
244 | } | |
245 | } | |
246 | ||
247 | // OK, we have the correct xregistry/xencoding in info structure | |
248 | ||
249 | wxNativeFont font = wxLoadQueryFont( pointSize, family, style, weight, | |
250 | underlined, facename, | |
251 | info.xregistry, info.xencoding ); | |
252 | ||
253 | if ( !font ) | |
254 | { | |
255 | // search up and down by stepsize 10 | |
256 | int max_size = pointSize + 20 * (1 + (pointSize/180)); | |
257 | int min_size = pointSize - 20 * (1 + (pointSize/180)); | |
258 | ||
259 | int i; | |
260 | ||
261 | // Search for smaller size (approx.) | |
262 | for ( i = pointSize - 10; !font && i >= 10 && i >= min_size; i -= 10 ) | |
263 | { | |
264 | font = wxLoadQueryFont(i, family, style, weight, underlined, | |
265 | facename, info.xregistry, info.xencoding); | |
266 | } | |
267 | ||
268 | // Search for larger size (approx.) | |
269 | for ( i = pointSize + 10; !font && i <= max_size; i += 10 ) | |
270 | { | |
271 | font = wxLoadQueryFont(i, family, style, weight, underlined, | |
272 | facename, info.xregistry, info.xencoding); | |
273 | } | |
274 | ||
275 | // Try default family | |
276 | if ( !font && family != wxDEFAULT ) | |
277 | { | |
278 | font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight, | |
279 | underlined, facename, | |
280 | info.xregistry, info.xencoding ); | |
281 | } | |
282 | ||
283 | // Bogus font I | |
284 | if ( !font ) | |
285 | { | |
286 | font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL, | |
287 | underlined, facename, | |
288 | info.xregistry, info.xencoding); | |
289 | } | |
290 | ||
291 | // Bogus font II | |
292 | if ( !font ) | |
293 | { | |
294 | font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL, | |
295 | underlined, wxEmptyString, | |
296 | info.xregistry, info.xencoding); | |
297 | } | |
298 | } | |
299 | ||
300 | return font; | |
301 | } | |
302 | ||
303 | // ---------------------------------------------------------------------------- | |
304 | // private functions | |
305 | // ---------------------------------------------------------------------------- | |
306 | ||
307 | // returns TRUE if there are any fonts matching this font spec | |
308 | static bool wxTestFontSpec(const wxString& fontspec) | |
309 | { | |
310 | wxNativeFont test = wxLoadFont(fontspec); | |
311 | if ( test ) | |
312 | { | |
313 | wxFreeFont(test); | |
314 | ||
315 | return TRUE; | |
316 | } | |
317 | else | |
318 | { | |
319 | return FALSE; | |
320 | } | |
321 | } | |
322 | ||
323 | static wxNativeFont wxLoadQueryFont(int pointSize, | |
324 | int family, | |
325 | int style, | |
326 | int weight, | |
327 | bool WXUNUSED(underlined), | |
328 | const wxString& facename, | |
329 | const wxString& xregistry, | |
330 | const wxString& xencoding) | |
331 | { | |
332 | wxString xfamily; | |
333 | switch (family) | |
334 | { | |
335 | case wxDECORATIVE: xfamily = wxT("lucida"); break; | |
336 | case wxROMAN: xfamily = wxT("times"); break; | |
337 | case wxMODERN: xfamily = wxT("courier"); break; | |
338 | case wxSWISS: xfamily = wxT("helvetica"); break; | |
339 | case wxTELETYPE: xfamily = wxT("lucidatypewriter"); break; | |
340 | case wxSCRIPT: xfamily = wxT("utopia"); break; | |
341 | default: xfamily = wxT("*"); | |
342 | } | |
343 | ||
344 | wxString fontSpec; | |
345 | if (!facename.IsEmpty()) | |
346 | { | |
347 | fontSpec.Printf(wxT("-*-%s-*-*-normal-*-*-*-*-*-*-*-*-*"), | |
348 | facename.c_str()); | |
349 | ||
350 | if ( wxTestFontSpec(fontSpec) ) | |
351 | { | |
352 | xfamily = facename; | |
353 | } | |
354 | //else: no such family, use default one instead | |
355 | } | |
356 | ||
357 | wxString xstyle; | |
358 | switch (style) | |
359 | { | |
360 | case wxITALIC: xstyle = wxT("i"); break; | |
361 | case wxSLANT: xstyle = wxT("o"); break; | |
362 | case wxNORMAL: xstyle = wxT("r"); break; | |
363 | default: xstyle = wxT("*"); break; | |
364 | } | |
365 | ||
366 | wxString xweight; | |
367 | switch (weight) | |
368 | { | |
369 | case wxBOLD: | |
370 | { | |
371 | fontSpec.Printf(wxT("-*-%s-bold-*-*-*-*-*-*-*-*-*-*-*"), | |
372 | xfamily.c_str()); | |
373 | if ( wxTestFontSpec(fontSpec) ) | |
374 | { | |
375 | xweight = wxT("bold"); | |
376 | break; | |
377 | } | |
378 | fontSpec.Printf(wxT("-*-%s-heavy-*-*-*-*-*-*-*-*-*-*-*"), | |
379 | xfamily.c_str()); | |
380 | if ( wxTestFontSpec(fontSpec) ) | |
381 | { | |
382 | xweight = wxT("heavy"); | |
383 | break; | |
384 | } | |
385 | fontSpec.Printf(wxT("-*-%s-extrabold-*-*-*-*-*-*-*-*-*-*-*"), | |
386 | xfamily.c_str()); | |
387 | if ( wxTestFontSpec(fontSpec) ) | |
388 | { | |
389 | xweight = wxT("extrabold"); | |
390 | break; | |
391 | } | |
392 | fontSpec.Printf(wxT("-*-%s-demibold-*-*-*-*-*-*-*-*-*-*-*"), | |
393 | xfamily.c_str()); | |
394 | if ( wxTestFontSpec(fontSpec) ) | |
395 | { | |
396 | xweight = wxT("demibold"); | |
397 | break; | |
398 | } | |
399 | fontSpec.Printf(wxT("-*-%s-black-*-*-*-*-*-*-*-*-*-*-*"), | |
400 | xfamily.c_str()); | |
401 | if ( wxTestFontSpec(fontSpec) ) | |
402 | { | |
403 | xweight = wxT("black"); | |
404 | break; | |
405 | } | |
406 | fontSpec.Printf(wxT("-*-%s-ultrablack-*-*-*-*-*-*-*-*-*-*-*"), | |
407 | xfamily.c_str()); | |
408 | if ( wxTestFontSpec(fontSpec) ) | |
409 | { | |
410 | xweight = wxT("ultrablack"); | |
411 | break; | |
412 | } | |
413 | } | |
414 | break; | |
415 | case wxLIGHT: | |
416 | { | |
417 | fontSpec.Printf(wxT("-*-%s-light-*-*-*-*-*-*-*-*-*-*-*"), | |
418 | xfamily.c_str()); | |
419 | if ( wxTestFontSpec(fontSpec) ) | |
420 | { | |
421 | xweight = wxT("light"); | |
422 | break; | |
423 | } | |
424 | fontSpec.Printf(wxT("-*-%s-thin-*-*-*-*-*-*-*-*-*-*-*"), | |
425 | xfamily.c_str()); | |
426 | if ( wxTestFontSpec(fontSpec) ) | |
427 | { | |
428 | xweight = wxT("thin"); | |
429 | break; | |
430 | } | |
431 | } | |
432 | break; | |
433 | case wxNORMAL: | |
434 | { | |
435 | fontSpec.Printf(wxT("-*-%s-medium-*-*-*-*-*-*-*-*-*-*-*"), | |
436 | xfamily.c_str()); | |
437 | if ( wxTestFontSpec(fontSpec) ) | |
438 | { | |
439 | xweight = wxT("medium"); | |
440 | break; | |
441 | } | |
442 | fontSpec.Printf(wxT("-*-%s-normal-*-*-*-*-*-*-*-*-*-*-*"), | |
443 | xfamily.c_str()); | |
444 | if ( wxTestFontSpec(fontSpec) ) | |
445 | { | |
446 | xweight = wxT("normal"); | |
447 | break; | |
448 | } | |
449 | fontSpec.Printf(wxT("-*-%s-regular-*-*-*-*-*-*-*-*-*-*-*"), | |
450 | xfamily.c_str()); | |
451 | if ( wxTestFontSpec(fontSpec) ) | |
452 | { | |
453 | xweight = wxT("regular"); | |
454 | break; | |
455 | } | |
456 | xweight = wxT("*"); | |
457 | } | |
458 | break; | |
459 | default: xweight = wxT("*"); break; | |
460 | } | |
461 | ||
462 | // construct the X font spec from our data | |
463 | fontSpec.Printf(wxT("-*-%s-%s-%s-normal-*-*-%d-*-*-*-*-%s-%s"), | |
464 | xfamily.c_str(), xweight.c_str(), xstyle.c_str(), | |
465 | pointSize, xregistry.c_str(), xencoding.c_str()); | |
466 | ||
467 | return wxLoadFont(fontSpec); | |
468 | } | |
469 |