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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: font.cpp | |
3 | // Purpose: wxFont class | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 01/02/97 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart and Markus Holzem | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #ifdef __GNUG__ | |
21 | #pragma implementation "font.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 | #include "wx/setup.h" | |
33 | #include "wx/list.h" | |
34 | #include "wx/utils.h" | |
35 | #include "wx/app.h" | |
36 | #include "wx/font.h" | |
37 | #include "wx/log.h" | |
38 | #endif // WX_PRECOMP | |
39 | ||
40 | #include "wx/fontutil.h" | |
41 | #include "wx/tokenzr.h" | |
42 | ||
43 | #include "wx/msw/private.h" | |
44 | ||
45 | IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject) | |
46 | ||
47 | // ---------------------------------------------------------------------------- | |
48 | // constants | |
49 | // ---------------------------------------------------------------------------- | |
50 | ||
51 | // the default font size in points | |
52 | static const int wxDEFAULT_FONT_SIZE = 12; | |
53 | ||
54 | // ---------------------------------------------------------------------------- | |
55 | // wxFontRefData - the internal description of the font | |
56 | // ---------------------------------------------------------------------------- | |
57 | ||
58 | class WXDLLEXPORT wxFontRefData: public wxGDIRefData | |
59 | { | |
60 | friend class WXDLLEXPORT wxFont; | |
61 | ||
62 | public: | |
63 | wxFontRefData() | |
64 | { | |
65 | Init(wxDEFAULT_FONT_SIZE, wxDEFAULT, wxNORMAL, wxNORMAL, FALSE, | |
66 | "", wxFONTENCODING_DEFAULT); | |
67 | } | |
68 | ||
69 | wxFontRefData(const wxFontRefData& data) | |
70 | { | |
71 | Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight, | |
72 | data.m_underlined, data.m_faceName, data.m_encoding); | |
73 | ||
74 | m_fontId = data.m_fontId; | |
75 | } | |
76 | ||
77 | wxFontRefData(int size, | |
78 | int family, | |
79 | int style, | |
80 | int weight, | |
81 | bool underlined, | |
82 | const wxString& faceName, | |
83 | wxFontEncoding encoding) | |
84 | { | |
85 | Init(size, family, style, weight, underlined, faceName, encoding); | |
86 | } | |
87 | ||
88 | wxFontRefData(const wxNativeFontInfo& info) | |
89 | { | |
90 | Init(info); | |
91 | } | |
92 | ||
93 | virtual ~wxFontRefData(); | |
94 | ||
95 | protected: | |
96 | // common part of all ctors | |
97 | void Init(int size, | |
98 | int family, | |
99 | int style, | |
100 | int weight, | |
101 | bool underlined, | |
102 | const wxString& faceName, | |
103 | wxFontEncoding encoding); | |
104 | ||
105 | void Init(const wxNativeFontInfo& info); | |
106 | ||
107 | // If TRUE, the pointer to the actual font is temporary and SHOULD NOT BE | |
108 | // DELETED by destructor | |
109 | bool m_temporary; | |
110 | ||
111 | int m_fontId; | |
112 | ||
113 | // font characterstics | |
114 | int m_pointSize; | |
115 | int m_family; | |
116 | int m_style; | |
117 | int m_weight; | |
118 | bool m_underlined; | |
119 | wxString m_faceName; | |
120 | wxFontEncoding m_encoding; | |
121 | ||
122 | // Windows font handle | |
123 | WXHFONT m_hFont; | |
124 | ||
125 | // Native font info | |
126 | wxNativeFontInfo m_nativeFontInfo; | |
127 | bool m_nativeFontInfoOk; | |
128 | }; | |
129 | ||
130 | // ============================================================================ | |
131 | // implementation | |
132 | // ============================================================================ | |
133 | ||
134 | // ---------------------------------------------------------------------------- | |
135 | // wxFontRefData | |
136 | // ---------------------------------------------------------------------------- | |
137 | ||
138 | void wxFontRefData::Init(int pointSize, | |
139 | int family, | |
140 | int style, | |
141 | int weight, | |
142 | bool underlined, | |
143 | const wxString& faceName, | |
144 | wxFontEncoding encoding) | |
145 | { | |
146 | m_style = style; | |
147 | m_pointSize = pointSize; | |
148 | m_family = family; | |
149 | m_style = style; | |
150 | m_weight = weight; | |
151 | m_underlined = underlined; | |
152 | m_faceName = faceName; | |
153 | m_encoding = encoding; | |
154 | ||
155 | m_fontId = 0; | |
156 | m_temporary = FALSE; | |
157 | ||
158 | m_hFont = 0; | |
159 | ||
160 | m_nativeFontInfoOk = FALSE; | |
161 | } | |
162 | ||
163 | void wxFontRefData::Init(const wxNativeFontInfo& info) | |
164 | { | |
165 | // extract family from pitch-and-family | |
166 | int lfFamily = info.lf.lfPitchAndFamily; | |
167 | if ( lfFamily & FIXED_PITCH ) | |
168 | lfFamily -= FIXED_PITCH; | |
169 | if ( lfFamily & VARIABLE_PITCH ) | |
170 | lfFamily -= VARIABLE_PITCH; | |
171 | ||
172 | switch ( lfFamily ) | |
173 | { | |
174 | case FF_ROMAN: | |
175 | m_family = wxROMAN; | |
176 | break; | |
177 | ||
178 | case FF_SWISS: | |
179 | m_family = wxSWISS; | |
180 | break; | |
181 | ||
182 | case FF_SCRIPT: | |
183 | m_family = wxSCRIPT; | |
184 | break; | |
185 | ||
186 | case FF_MODERN: | |
187 | m_family = wxMODERN; | |
188 | break; | |
189 | ||
190 | case FF_DECORATIVE: | |
191 | m_family = wxDECORATIVE; | |
192 | break; | |
193 | ||
194 | default: | |
195 | m_family = wxSWISS; | |
196 | } | |
197 | ||
198 | // weight and style | |
199 | switch ( info.lf.lfWeight ) | |
200 | { | |
201 | case FW_LIGHT: | |
202 | m_weight = wxLIGHT; | |
203 | break; | |
204 | ||
205 | default: | |
206 | case FW_NORMAL: | |
207 | m_weight = wxNORMAL; | |
208 | break; | |
209 | ||
210 | case FW_BOLD: | |
211 | m_weight = wxBOLD; | |
212 | break; | |
213 | } | |
214 | ||
215 | m_style = info.lf.lfItalic ? wxITALIC : wxNORMAL; | |
216 | ||
217 | m_underlined = info.lf.lfUnderline != 0; | |
218 | ||
219 | m_faceName = info.lf.lfFaceName; | |
220 | ||
221 | // remember that 1pt = 1/72inch | |
222 | int height = abs(info.lf.lfHeight); | |
223 | ||
224 | #if wxUSE_SCREEN_DPI | |
225 | HDC dc = ::GetDC(NULL); | |
226 | static const int ppInch = GetDeviceCaps(dc, LOGPIXELSY); | |
227 | ::ReleaseDC(NULL, dc); | |
228 | #else | |
229 | static const int ppInch = 96; | |
230 | #endif | |
231 | m_pointSize = (int) (((72.0*((double)height))/(double) ppInch) + 0.5); | |
232 | ||
233 | m_encoding = wxGetFontEncFromCharSet(info.lf.lfCharSet); | |
234 | ||
235 | m_fontId = 0; | |
236 | m_temporary = FALSE; | |
237 | ||
238 | m_hFont = 0; | |
239 | ||
240 | m_nativeFontInfoOk = TRUE; | |
241 | m_nativeFontInfo = info; | |
242 | } | |
243 | ||
244 | wxFontRefData::~wxFontRefData() | |
245 | { | |
246 | if ( m_hFont ) | |
247 | { | |
248 | if ( !::DeleteObject((HFONT) m_hFont) ) | |
249 | { | |
250 | wxLogLastError(wxT("DeleteObject(font)")); | |
251 | } | |
252 | } | |
253 | } | |
254 | ||
255 | ||
256 | // ---------------------------------------------------------------------------- | |
257 | // wxNativeFontInfo | |
258 | // ---------------------------------------------------------------------------- | |
259 | ||
260 | bool wxNativeFontInfo::FromString(const wxString& s) | |
261 | { | |
262 | long l; | |
263 | ||
264 | wxStringTokenizer tokenizer(s, _T(";")); | |
265 | ||
266 | wxString token = tokenizer.GetNextToken(); | |
267 | // | |
268 | // Ignore the version for now | |
269 | // | |
270 | ||
271 | token = tokenizer.GetNextToken(); | |
272 | if ( !token.ToLong(&l) ) | |
273 | return FALSE; | |
274 | lf.lfHeight = l; | |
275 | ||
276 | token = tokenizer.GetNextToken(); | |
277 | if ( !token.ToLong(&l) ) | |
278 | return FALSE; | |
279 | lf.lfWidth = l; | |
280 | ||
281 | token = tokenizer.GetNextToken(); | |
282 | if ( !token.ToLong(&l) ) | |
283 | return FALSE; | |
284 | lf.lfEscapement = l; | |
285 | ||
286 | token = tokenizer.GetNextToken(); | |
287 | if ( !token.ToLong(&l) ) | |
288 | return FALSE; | |
289 | lf.lfOrientation = l; | |
290 | ||
291 | token = tokenizer.GetNextToken(); | |
292 | if ( !token.ToLong(&l) ) | |
293 | return FALSE; | |
294 | lf.lfWeight = l; | |
295 | ||
296 | token = tokenizer.GetNextToken(); | |
297 | if ( !token.ToLong(&l) ) | |
298 | return FALSE; | |
299 | lf.lfItalic = l; | |
300 | ||
301 | token = tokenizer.GetNextToken(); | |
302 | if ( !token.ToLong(&l) ) | |
303 | return FALSE; | |
304 | lf.lfUnderline = l; | |
305 | ||
306 | token = tokenizer.GetNextToken(); | |
307 | if ( !token.ToLong(&l) ) | |
308 | return FALSE; | |
309 | lf.lfStrikeOut = l; | |
310 | ||
311 | token = tokenizer.GetNextToken(); | |
312 | if ( !token.ToLong(&l) ) | |
313 | return FALSE; | |
314 | lf.lfCharSet = l; | |
315 | ||
316 | token = tokenizer.GetNextToken(); | |
317 | if ( !token.ToLong(&l) ) | |
318 | return FALSE; | |
319 | lf.lfOutPrecision = l; | |
320 | ||
321 | token = tokenizer.GetNextToken(); | |
322 | if ( !token.ToLong(&l) ) | |
323 | return FALSE; | |
324 | lf.lfClipPrecision = l; | |
325 | ||
326 | token = tokenizer.GetNextToken(); | |
327 | if ( !token.ToLong(&l) ) | |
328 | return FALSE; | |
329 | lf.lfQuality = l; | |
330 | ||
331 | token = tokenizer.GetNextToken(); | |
332 | if ( !token.ToLong(&l) ) | |
333 | return FALSE; | |
334 | lf.lfPitchAndFamily = l; | |
335 | ||
336 | token = tokenizer.GetNextToken(); | |
337 | if(!token) | |
338 | return FALSE; | |
339 | wxStrcpy(lf.lfFaceName, token.c_str()); | |
340 | ||
341 | return TRUE; | |
342 | } | |
343 | ||
344 | wxString wxNativeFontInfo::ToString() const | |
345 | { | |
346 | wxString s; | |
347 | ||
348 | s.Printf(_T("%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%s"), | |
349 | 0, // version, in case we want to change the format later | |
350 | lf.lfHeight, | |
351 | lf.lfWidth, | |
352 | lf.lfEscapement, | |
353 | lf.lfOrientation, | |
354 | lf.lfWeight, | |
355 | lf.lfItalic, | |
356 | lf.lfUnderline, | |
357 | lf.lfStrikeOut, | |
358 | lf.lfCharSet, | |
359 | lf.lfOutPrecision, | |
360 | lf.lfClipPrecision, | |
361 | lf.lfQuality, | |
362 | lf.lfPitchAndFamily, | |
363 | lf.lfFaceName); | |
364 | ||
365 | return s; | |
366 | } | |
367 | ||
368 | // ---------------------------------------------------------------------------- | |
369 | // wxFont | |
370 | // ---------------------------------------------------------------------------- | |
371 | ||
372 | void wxFont::Init() | |
373 | { | |
374 | if ( wxTheFontList ) | |
375 | wxTheFontList->Append(this); | |
376 | } | |
377 | ||
378 | bool wxFont::Create(const wxNativeFontInfo& info) | |
379 | { | |
380 | UnRef(); | |
381 | ||
382 | m_refData = new wxFontRefData(info); | |
383 | ||
384 | RealizeResource(); | |
385 | ||
386 | return TRUE; | |
387 | } | |
388 | ||
389 | wxFont::wxFont(const wxString& fontdesc) | |
390 | { | |
391 | wxNativeFontInfo info; | |
392 | if ( info.FromString(fontdesc) ) | |
393 | (void)Create(info); | |
394 | } | |
395 | ||
396 | /* Constructor for a font. Note that the real construction is done | |
397 | * in wxDC::SetFont, when information is available about scaling etc. | |
398 | */ | |
399 | bool wxFont::Create(int pointSize, | |
400 | int family, | |
401 | int style, | |
402 | int weight, | |
403 | bool underlined, | |
404 | const wxString& faceName, | |
405 | wxFontEncoding encoding) | |
406 | { | |
407 | UnRef(); | |
408 | ||
409 | // wxDEFAULT is a valid value for the font size too so we must treat it | |
410 | // specially here (otherwise the size would be 70 == wxDEFAULT value) | |
411 | if ( pointSize == wxDEFAULT ) | |
412 | pointSize = wxDEFAULT_FONT_SIZE; | |
413 | ||
414 | m_refData = new wxFontRefData(pointSize, family, style, weight, | |
415 | underlined, faceName, encoding); | |
416 | ||
417 | RealizeResource(); | |
418 | ||
419 | return TRUE; | |
420 | } | |
421 | ||
422 | wxFont::~wxFont() | |
423 | { | |
424 | if ( wxTheFontList ) | |
425 | wxTheFontList->DeleteObject(this); | |
426 | } | |
427 | ||
428 | // ---------------------------------------------------------------------------- | |
429 | // real implementation | |
430 | // ---------------------------------------------------------------------------- | |
431 | ||
432 | bool wxFont::RealizeResource() | |
433 | { | |
434 | if ( GetResourceHandle() ) | |
435 | { | |
436 | // VZ: the old code returned FALSE in this case, but it doesn't seem | |
437 | // to make sense because the font _was_ created | |
438 | return TRUE; | |
439 | } | |
440 | ||
441 | if(!M_FONTDATA->m_nativeFontInfoOk) | |
442 | { | |
443 | wxFillLogFont(&M_FONTDATA->m_nativeFontInfo.lf, this); | |
444 | M_FONTDATA->m_nativeFontInfoOk = TRUE; | |
445 | } | |
446 | ||
447 | M_FONTDATA->m_hFont = (WXHFONT)::CreateFontIndirect(&M_FONTDATA->m_nativeFontInfo.lf); | |
448 | M_FONTDATA->m_faceName = M_FONTDATA->m_nativeFontInfo.lf.lfFaceName; | |
449 | if ( !M_FONTDATA->m_hFont ) | |
450 | { | |
451 | wxLogLastError(wxT("CreateFont")); | |
452 | ||
453 | return FALSE; | |
454 | } | |
455 | ||
456 | return TRUE; | |
457 | } | |
458 | ||
459 | bool wxFont::FreeResource(bool force) | |
460 | { | |
461 | if ( GetResourceHandle() ) | |
462 | { | |
463 | if ( !::DeleteObject((HFONT) M_FONTDATA->m_hFont) ) | |
464 | { | |
465 | wxLogLastError(wxT("DeleteObject(font)")); | |
466 | } | |
467 | ||
468 | M_FONTDATA->m_hFont = 0; | |
469 | ||
470 | return TRUE; | |
471 | } | |
472 | return FALSE; | |
473 | } | |
474 | ||
475 | WXHANDLE wxFont::GetResourceHandle() | |
476 | { | |
477 | return GetHFONT(); | |
478 | } | |
479 | ||
480 | WXHFONT wxFont::GetHFONT() const | |
481 | { | |
482 | if ( !M_FONTDATA ) | |
483 | return 0; | |
484 | else | |
485 | return (WXHANDLE)M_FONTDATA->m_hFont; | |
486 | } | |
487 | ||
488 | bool wxFont::IsFree() const | |
489 | { | |
490 | return (M_FONTDATA && (M_FONTDATA->m_hFont == 0)); | |
491 | } | |
492 | ||
493 | void wxFont::Unshare() | |
494 | { | |
495 | // Don't change shared data | |
496 | if ( !m_refData ) | |
497 | { | |
498 | m_refData = new wxFontRefData(); | |
499 | } | |
500 | else | |
501 | { | |
502 | wxFontRefData* ref = new wxFontRefData(*M_FONTDATA); | |
503 | UnRef(); | |
504 | m_refData = ref; | |
505 | } | |
506 | } | |
507 | ||
508 | // ---------------------------------------------------------------------------- | |
509 | // change font attribute: we recreate font when doing it | |
510 | // ---------------------------------------------------------------------------- | |
511 | ||
512 | void wxFont::SetPointSize(int pointSize) | |
513 | { | |
514 | Unshare(); | |
515 | ||
516 | M_FONTDATA->m_pointSize = pointSize; | |
517 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
518 | ||
519 | RealizeResource(); | |
520 | } | |
521 | ||
522 | void wxFont::SetFamily(int family) | |
523 | { | |
524 | Unshare(); | |
525 | ||
526 | M_FONTDATA->m_family = family; | |
527 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
528 | ||
529 | RealizeResource(); | |
530 | } | |
531 | ||
532 | void wxFont::SetStyle(int style) | |
533 | { | |
534 | Unshare(); | |
535 | ||
536 | M_FONTDATA->m_style = style; | |
537 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
538 | ||
539 | RealizeResource(); | |
540 | } | |
541 | ||
542 | void wxFont::SetWeight(int weight) | |
543 | { | |
544 | Unshare(); | |
545 | ||
546 | M_FONTDATA->m_weight = weight; | |
547 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
548 | ||
549 | RealizeResource(); | |
550 | } | |
551 | ||
552 | void wxFont::SetFaceName(const wxString& faceName) | |
553 | { | |
554 | Unshare(); | |
555 | ||
556 | M_FONTDATA->m_faceName = faceName; | |
557 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
558 | ||
559 | RealizeResource(); | |
560 | } | |
561 | ||
562 | void wxFont::SetUnderlined(bool underlined) | |
563 | { | |
564 | Unshare(); | |
565 | ||
566 | M_FONTDATA->m_underlined = underlined; | |
567 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
568 | ||
569 | RealizeResource(); | |
570 | } | |
571 | ||
572 | void wxFont::SetEncoding(wxFontEncoding encoding) | |
573 | { | |
574 | Unshare(); | |
575 | ||
576 | M_FONTDATA->m_encoding = encoding; | |
577 | M_FONTDATA->m_nativeFontInfoOk = FALSE; | |
578 | ||
579 | RealizeResource(); | |
580 | } | |
581 | ||
582 | void wxFont::SetNativeFontInfo(const wxNativeFontInfo& info) | |
583 | { | |
584 | Unshare(); | |
585 | ||
586 | FreeResource(); | |
587 | ||
588 | M_FONTDATA->Init(info); | |
589 | ||
590 | RealizeResource(); | |
591 | } | |
592 | ||
593 | // ---------------------------------------------------------------------------- | |
594 | // accessors | |
595 | // ---------------------------------------------------------------------------- | |
596 | ||
597 | int wxFont::GetPointSize() const | |
598 | { | |
599 | return M_FONTDATA->m_pointSize; | |
600 | } | |
601 | ||
602 | int wxFont::GetFamily() const | |
603 | { | |
604 | return M_FONTDATA->m_family; | |
605 | } | |
606 | ||
607 | int wxFont::GetFontId() const | |
608 | { | |
609 | return M_FONTDATA->m_fontId; | |
610 | } | |
611 | ||
612 | int wxFont::GetStyle() const | |
613 | { | |
614 | return M_FONTDATA->m_style; | |
615 | } | |
616 | ||
617 | int wxFont::GetWeight() const | |
618 | { | |
619 | return M_FONTDATA->m_weight; | |
620 | } | |
621 | ||
622 | bool wxFont::GetUnderlined() const | |
623 | { | |
624 | return M_FONTDATA->m_underlined; | |
625 | } | |
626 | ||
627 | wxString wxFont::GetFaceName() const | |
628 | { | |
629 | wxString str; | |
630 | if ( M_FONTDATA ) | |
631 | str = M_FONTDATA->m_faceName; | |
632 | return str; | |
633 | } | |
634 | ||
635 | wxFontEncoding wxFont::GetEncoding() const | |
636 | { | |
637 | return M_FONTDATA->m_encoding; | |
638 | } | |
639 | ||
640 | wxNativeFontInfo *wxFont::GetNativeFontInfo() const | |
641 | { | |
642 | if( M_FONTDATA->m_nativeFontInfoOk ) | |
643 | return new wxNativeFontInfo(M_FONTDATA->m_nativeFontInfo); | |
644 | ||
645 | return 0; | |
646 | } | |
647 |