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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/gtk/utilsgtk.cpp | |
3 | // Purpose: | |
4 | // Author: Robert Roebling | |
5 | // Id: $Id$ | |
6 | // Copyright: (c) 1998 Robert Roebling | |
7 | // Licence: wxWindows licence | |
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | ||
10 | // For compilers that support precompilation, includes "wx.h". | |
11 | #include "wx/wxprec.h" | |
12 | ||
13 | #include "wx/utils.h" | |
14 | ||
15 | #ifndef WX_PRECOMP | |
16 | #include "wx/string.h" | |
17 | #include "wx/intl.h" | |
18 | #include "wx/log.h" | |
19 | #endif | |
20 | ||
21 | #include "wx/apptrait.h" | |
22 | #include "wx/process.h" | |
23 | #include "wx/sysopt.h" | |
24 | #include "wx/unix/execute.h" | |
25 | ||
26 | #include "wx/gtk/private/timer.h" | |
27 | #include "wx/evtloop.h" | |
28 | ||
29 | #ifdef __WXDEBUG__ | |
30 | #include "wx/gtk/assertdlg_gtk.h" | |
31 | #if wxUSE_STACKWALKER | |
32 | #include "wx/stackwalk.h" | |
33 | #endif // wxUSE_STACKWALKER | |
34 | #endif // __WXDEBUG__ | |
35 | ||
36 | #include <stdarg.h> | |
37 | #include <string.h> | |
38 | #include <sys/stat.h> | |
39 | #include <sys/types.h> | |
40 | #include <sys/wait.h> // for WNOHANG | |
41 | #include <unistd.h> | |
42 | ||
43 | #include "glib.h" | |
44 | #include "gdk/gdk.h" | |
45 | #include "gtk/gtk.h" | |
46 | #include "gdk/gdkx.h" | |
47 | ||
48 | #ifdef HAVE_X11_XKBLIB_H | |
49 | /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with | |
50 | * field named "explicit" - which is, of course, an error for a C++ | |
51 | * compiler. To be on the safe side, just redefine it everywhere. */ | |
52 | #define explicit __wx_explicit | |
53 | ||
54 | #include "X11/XKBlib.h" | |
55 | ||
56 | #undef explicit | |
57 | #endif // HAVE_X11_XKBLIB_H | |
58 | ||
59 | ||
60 | #if wxUSE_DETECT_SM | |
61 | #include "X11/Xlib.h" | |
62 | #include "X11/SM/SMlib.h" | |
63 | #endif | |
64 | ||
65 | //----------------------------------------------------------------------------- | |
66 | // data | |
67 | //----------------------------------------------------------------------------- | |
68 | ||
69 | extern GtkWidget *wxGetRootWindow(); | |
70 | ||
71 | //---------------------------------------------------------------------------- | |
72 | // misc. | |
73 | //---------------------------------------------------------------------------- | |
74 | #ifndef __EMX__ | |
75 | // on OS/2, we use the wxBell from wxBase library | |
76 | ||
77 | void wxBell() | |
78 | { | |
79 | gdk_beep(); | |
80 | } | |
81 | #endif | |
82 | ||
83 | /* Don't synthesize KeyUp events holding down a key and producing | |
84 | KeyDown events with autorepeat. */ | |
85 | #ifdef HAVE_X11_XKBLIB_H | |
86 | bool wxSetDetectableAutoRepeat( bool flag ) | |
87 | { | |
88 | Bool result; | |
89 | XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result ); | |
90 | return result; /* true if keyboard hardware supports this mode */ | |
91 | } | |
92 | #else | |
93 | bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) ) | |
94 | { | |
95 | return false; | |
96 | } | |
97 | #endif | |
98 | ||
99 | // ---------------------------------------------------------------------------- | |
100 | // display characterstics | |
101 | // ---------------------------------------------------------------------------- | |
102 | ||
103 | void *wxGetDisplay() | |
104 | { | |
105 | return GDK_DISPLAY(); | |
106 | } | |
107 | ||
108 | void wxDisplaySize( int *width, int *height ) | |
109 | { | |
110 | if (width) *width = gdk_screen_width(); | |
111 | if (height) *height = gdk_screen_height(); | |
112 | } | |
113 | ||
114 | void wxDisplaySizeMM( int *width, int *height ) | |
115 | { | |
116 | if (width) *width = gdk_screen_width_mm(); | |
117 | if (height) *height = gdk_screen_height_mm(); | |
118 | } | |
119 | ||
120 | void wxGetMousePosition( int* x, int* y ) | |
121 | { | |
122 | gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL ); | |
123 | } | |
124 | ||
125 | bool wxColourDisplay() | |
126 | { | |
127 | return true; | |
128 | } | |
129 | ||
130 | int wxDisplayDepth() | |
131 | { | |
132 | return gdk_drawable_get_visual( wxGetRootWindow()->window )->depth; | |
133 | } | |
134 | ||
135 | wxWindow* wxFindWindowAtPoint(const wxPoint& pt) | |
136 | { | |
137 | return wxGenericFindWindowAtPoint(pt); | |
138 | } | |
139 | ||
140 | #if !wxUSE_UNICODE | |
141 | ||
142 | WXDLLIMPEXP_CORE wxCharBuffer | |
143 | wxConvertToGTK(const wxString& s, wxFontEncoding enc) | |
144 | { | |
145 | wxWCharBuffer wbuf; | |
146 | if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT ) | |
147 | { | |
148 | wbuf = wxConvUI->cMB2WC(s.c_str()); | |
149 | } | |
150 | else // another encoding, use generic conversion class | |
151 | { | |
152 | wbuf = wxCSConv(enc).cMB2WC(s.c_str()); | |
153 | } | |
154 | ||
155 | if ( !wbuf && !s.empty() ) | |
156 | { | |
157 | // conversion failed, but we still want to show something to the user | |
158 | // even if it's going to be wrong it is better than nothing | |
159 | // | |
160 | // we choose ISO8859-1 here arbitrarily, it's just the most common | |
161 | // encoding probably and, also importantly here, conversion from it | |
162 | // never fails as it's done internally by wxCSConv | |
163 | wbuf = wxCSConv(wxFONTENCODING_ISO8859_1).cMB2WC(s.c_str()); | |
164 | } | |
165 | ||
166 | return wxConvUTF8.cWC2MB(wbuf); | |
167 | } | |
168 | ||
169 | WXDLLIMPEXP_CORE wxCharBuffer | |
170 | wxConvertFromGTK(const wxString& s, wxFontEncoding enc) | |
171 | { | |
172 | // this conversion should never fail as GTK+ always uses UTF-8 internally | |
173 | // so there are no complications here | |
174 | const wxWCharBuffer wbuf(wxConvUTF8.cMB2WC(s.c_str())); | |
175 | if ( enc == wxFONTENCODING_SYSTEM ) | |
176 | return wxConvUI->cWC2MB(wbuf); | |
177 | ||
178 | return wxCSConv(enc).cWC2MB(wbuf); | |
179 | } | |
180 | ||
181 | #endif // !wxUSE_UNICODE | |
182 | ||
183 | // Returns NULL if version is certainly greater or equal than major.minor.micro | |
184 | // Returns string describing the error if version is lower than | |
185 | // major.minor.micro OR it cannot be determined and one should not rely on the | |
186 | // availability of pango version major.minor.micro, nor the non-availability | |
187 | const gchar *wx_pango_version_check (int major, int minor, int micro) | |
188 | { | |
189 | #ifdef PANGO_VERSION_MAJOR | |
190 | if (!gtk_check_version (2,11,0)) | |
191 | { | |
192 | // GTK+ 2.11 requires Pango >= 1.15.3 and pango_version_check | |
193 | // was added in Pango 1.15.2 thus we know for sure the pango lib we're | |
194 | // using has the pango_version_check function: | |
195 | return pango_version_check (major, minor, micro); | |
196 | } | |
197 | ||
198 | return "can't check"; | |
199 | #else // !PANGO_VERSION_MAJOR | |
200 | wxUnusedVar(major); | |
201 | wxUnusedVar(minor); | |
202 | wxUnusedVar(micro); | |
203 | ||
204 | return "too old headers"; | |
205 | #endif | |
206 | } | |
207 | ||
208 | ||
209 | // ---------------------------------------------------------------------------- | |
210 | // subprocess routines | |
211 | // ---------------------------------------------------------------------------- | |
212 | ||
213 | extern "C" { | |
214 | static | |
215 | void GTK_EndProcessDetector(gpointer data, gint source, | |
216 | GdkInputCondition WXUNUSED(condition)) | |
217 | { | |
218 | wxEndProcessData * const | |
219 | proc_data = static_cast<wxEndProcessData *>(data); | |
220 | ||
221 | // child exited, end waiting | |
222 | close(source); | |
223 | ||
224 | // don't call us again! | |
225 | gdk_input_remove(proc_data->tag); | |
226 | ||
227 | wxHandleProcessTermination(proc_data); | |
228 | } | |
229 | } | |
230 | ||
231 | int wxGUIAppTraits::AddProcessCallback(wxEndProcessData *proc_data, int fd) | |
232 | { | |
233 | int tag = gdk_input_add(fd, | |
234 | GDK_INPUT_READ, | |
235 | GTK_EndProcessDetector, | |
236 | (gpointer)proc_data); | |
237 | ||
238 | return tag; | |
239 | } | |
240 | ||
241 | ||
242 | ||
243 | // ---------------------------------------------------------------------------- | |
244 | // wxPlatformInfo-related | |
245 | // ---------------------------------------------------------------------------- | |
246 | ||
247 | wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const | |
248 | { | |
249 | if ( verMaj ) | |
250 | *verMaj = gtk_major_version; | |
251 | if ( verMin ) | |
252 | *verMin = gtk_minor_version; | |
253 | ||
254 | return wxPORT_GTK; | |
255 | } | |
256 | ||
257 | #if wxUSE_TIMER | |
258 | ||
259 | wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) | |
260 | { | |
261 | return new wxGTKTimerImpl(timer); | |
262 | } | |
263 | ||
264 | #endif // wxUSE_TIMER | |
265 | ||
266 | #if wxUSE_DETECT_SM | |
267 | static wxString GetSM() | |
268 | { | |
269 | class Dpy | |
270 | { | |
271 | public: | |
272 | Dpy() { m_dpy = XOpenDisplay(NULL); } | |
273 | ~Dpy() { if ( m_dpy ) XCloseDisplay(m_dpy); } | |
274 | ||
275 | operator Display *() const { return m_dpy; } | |
276 | private: | |
277 | Display *m_dpy; | |
278 | } dpy; | |
279 | ||
280 | if ( !dpy ) | |
281 | return wxEmptyString; | |
282 | ||
283 | char smerr[256]; | |
284 | char *client_id; | |
285 | SmcConn smc_conn = SmcOpenConnection(NULL, NULL, | |
286 | 999, 999, | |
287 | 0 /* mask */, NULL /* callbacks */, | |
288 | NULL, &client_id, | |
289 | WXSIZEOF(smerr), smerr); | |
290 | ||
291 | if ( !smc_conn ) | |
292 | { | |
293 | wxLogDebug("Failed to connect to session manager: %s", smerr); | |
294 | return wxEmptyString; | |
295 | } | |
296 | ||
297 | char *vendor = SmcVendor(smc_conn); | |
298 | wxString ret = wxString::FromAscii( vendor ); | |
299 | free(vendor); | |
300 | ||
301 | SmcCloseConnection(smc_conn, 0, NULL); | |
302 | free(client_id); | |
303 | ||
304 | return ret; | |
305 | } | |
306 | #endif // wxUSE_DETECT_SM | |
307 | ||
308 | ||
309 | //----------------------------------------------------------------------------- | |
310 | // wxGUIAppTraits | |
311 | //----------------------------------------------------------------------------- | |
312 | ||
313 | wxEventLoopBase *wxGUIAppTraits::CreateEventLoop() | |
314 | { | |
315 | return new wxEventLoop(); | |
316 | } | |
317 | ||
318 | ||
319 | #if wxUSE_INTL | |
320 | void wxGUIAppTraits::SetLocale() | |
321 | { | |
322 | gtk_set_locale(); | |
323 | wxUpdateLocaleIsUtf8(); | |
324 | } | |
325 | #endif | |
326 | ||
327 | #ifdef __WXDEBUG__ | |
328 | ||
329 | #if wxUSE_STACKWALKER | |
330 | ||
331 | // private helper class | |
332 | class StackDump : public wxStackWalker | |
333 | { | |
334 | public: | |
335 | StackDump(GtkAssertDialog *dlg) { m_dlg=dlg; } | |
336 | ||
337 | protected: | |
338 | virtual void OnStackFrame(const wxStackFrame& frame) | |
339 | { | |
340 | wxString fncname = frame.GetName(); | |
341 | wxString fncargs = fncname; | |
342 | ||
343 | size_t n = fncname.find(wxT('(')); | |
344 | if (n != wxString::npos) | |
345 | { | |
346 | // remove arguments from function name | |
347 | fncname.erase(n); | |
348 | ||
349 | // remove function name and brackets from arguments | |
350 | fncargs = fncargs.substr(n+1, fncargs.length()-n-2); | |
351 | } | |
352 | else | |
353 | fncargs = wxEmptyString; | |
354 | ||
355 | // append this stack frame's info in the dialog | |
356 | if (!frame.GetFileName().empty() || !fncname.empty()) | |
357 | gtk_assert_dialog_append_stack_frame(m_dlg, | |
358 | fncname.mb_str(), | |
359 | fncargs.mb_str(), | |
360 | frame.GetFileName().mb_str(), | |
361 | frame.GetLine()); | |
362 | } | |
363 | ||
364 | private: | |
365 | GtkAssertDialog *m_dlg; | |
366 | }; | |
367 | ||
368 | // the callback functions must be extern "C" to comply with GTK+ declarations | |
369 | extern "C" | |
370 | { | |
371 | void get_stackframe_callback(StackDump *dump) | |
372 | { | |
373 | // skip over frames up to including wxOnAssert() | |
374 | dump->ProcessFrames(3); | |
375 | } | |
376 | } | |
377 | ||
378 | #endif // wxUSE_STACKWALKER | |
379 | ||
380 | bool wxGUIAppTraits::ShowAssertDialog(const wxString& msg) | |
381 | { | |
382 | // under GTK2 we prefer to use a dialog widget written using directly GTK+; | |
383 | // in fact we cannot use a dialog written using wxWidgets: it would need | |
384 | // the wxWidgets idle processing to work correctly! | |
385 | GtkWidget *dialog = gtk_assert_dialog_new(); | |
386 | gtk_assert_dialog_set_message(GTK_ASSERT_DIALOG(dialog), msg.mb_str()); | |
387 | ||
388 | #if wxUSE_STACKWALKER | |
389 | // don't show more than maxLines or we could get a dialog too tall to be | |
390 | // shown on screen: 20 should be ok everywhere as even with 15 pixel high | |
391 | // characters it is still only 300 pixels... | |
392 | static const int maxLines = 20; | |
393 | ||
394 | // save current stack frame... | |
395 | StackDump dump(GTK_ASSERT_DIALOG(dialog)); | |
396 | dump.SaveStack(maxLines); | |
397 | ||
398 | // ...but process it only if the user needs it | |
399 | gtk_assert_dialog_set_backtrace_callback(GTK_ASSERT_DIALOG(dialog), | |
400 | (GtkAssertDialogStackFrameCallback)get_stackframe_callback, | |
401 | &dump); | |
402 | #endif // wxUSE_STACKWALKER | |
403 | ||
404 | gint result = gtk_dialog_run(GTK_DIALOG (dialog)); | |
405 | bool returnCode = false; | |
406 | switch (result) | |
407 | { | |
408 | case GTK_ASSERT_DIALOG_STOP: | |
409 | wxTrap(); | |
410 | break; | |
411 | case GTK_ASSERT_DIALOG_CONTINUE: | |
412 | // nothing to do | |
413 | break; | |
414 | case GTK_ASSERT_DIALOG_CONTINUE_SUPPRESSING: | |
415 | // no more asserts | |
416 | returnCode = true; | |
417 | break; | |
418 | ||
419 | default: | |
420 | wxFAIL_MSG( _T("unexpected return code from GtkAssertDialog") ); | |
421 | } | |
422 | ||
423 | gtk_widget_destroy(dialog); | |
424 | return returnCode; | |
425 | } | |
426 | ||
427 | #endif // __WXDEBUG__ | |
428 | ||
429 | wxString wxGUIAppTraits::GetDesktopEnvironment() const | |
430 | { | |
431 | wxString de = wxSystemOptions::GetOption(_T("gtk.desktop")); | |
432 | #if wxUSE_DETECT_SM | |
433 | if ( de.empty() ) | |
434 | { | |
435 | static const wxString s_SM = GetSM(); | |
436 | ||
437 | if (s_SM == wxT("GnomeSM")) | |
438 | de = wxT("GNOME"); | |
439 | else if (s_SM == wxT("KDE")) | |
440 | de = wxT("KDE"); | |
441 | } | |
442 | #endif // wxUSE_DETECT_SM | |
443 | ||
444 | return de; | |
445 | } | |
446 | ||
447 | #ifdef __WXGTK26__ | |
448 | ||
449 | // see the hack below in wxCmdLineParser::GetUsageString(). | |
450 | // TODO: replace this hack with a g_option_group_get_entries() | |
451 | // call as soon as such function exists; | |
452 | // see http://bugzilla.gnome.org/show_bug.cgi?id=431021 for the relative | |
453 | // feature request | |
454 | struct _GOptionGroup | |
455 | { | |
456 | gchar *name; | |
457 | gchar *description; | |
458 | gchar *help_description; | |
459 | ||
460 | GDestroyNotify destroy_notify; | |
461 | gpointer user_data; | |
462 | ||
463 | GTranslateFunc translate_func; | |
464 | GDestroyNotify translate_notify; | |
465 | gpointer translate_data; | |
466 | ||
467 | GOptionEntry *entries; | |
468 | gint n_entries; | |
469 | ||
470 | GOptionParseFunc pre_parse_func; | |
471 | GOptionParseFunc post_parse_func; | |
472 | GOptionErrorFunc error_func; | |
473 | }; | |
474 | ||
475 | wxString wxGetNameFromGtkOptionEntry(const GOptionEntry *opt) | |
476 | { | |
477 | wxString ret; | |
478 | ||
479 | if (opt->short_name) | |
480 | ret << _T("-") << opt->short_name; | |
481 | if (opt->long_name) | |
482 | { | |
483 | if (!ret.empty()) | |
484 | ret << _T(", "); | |
485 | ret << _T("--") << opt->long_name; | |
486 | ||
487 | if (opt->arg_description) | |
488 | ret << _T("=") << opt->arg_description; | |
489 | } | |
490 | ||
491 | return _T(" ") + ret; | |
492 | } | |
493 | ||
494 | #endif // __WXGTK26__ | |
495 | ||
496 | wxString | |
497 | wxGUIAppTraits::GetStandardCmdLineOptions(wxArrayString& names, | |
498 | wxArrayString& desc) const | |
499 | { | |
500 | wxString usage; | |
501 | ||
502 | #ifdef __WXGTK26__ | |
503 | if (!gtk_check_version(2,6,0)) | |
504 | { | |
505 | // since GTK>=2.6, we can use the glib_check_version() symbol... | |
506 | ||
507 | // check whether GLib version is greater than 2.6 but also lower than 2.19 | |
508 | // because, as we use the undocumented _GOptionGroup struct, we don't want | |
509 | // to run this code with future versions which might change it (2.19 is the | |
510 | // latest one at the time of this writing) | |
511 | if (!glib_check_version(2,6,0) && glib_check_version(2,19,0)) | |
512 | { | |
513 | usage << _("The following standard GTK+ options are also supported:\n"); | |
514 | ||
515 | // passing true here means that the function can open the default | |
516 | // display while parsing (not really used here anyhow) | |
517 | GOptionGroup *gtkOpts = gtk_get_option_group(true); | |
518 | ||
519 | // WARNING: here we access the internals of GOptionGroup: | |
520 | GOptionEntry *entries = ((_GOptionGroup*)gtkOpts)->entries; | |
521 | unsigned int n_entries = ((_GOptionGroup*)gtkOpts)->n_entries; | |
522 | wxArrayString namesOptions, descOptions; | |
523 | ||
524 | for ( size_t n = 0; n < n_entries; n++ ) | |
525 | { | |
526 | if ( entries[n].flags & G_OPTION_FLAG_HIDDEN ) | |
527 | continue; // skip | |
528 | ||
529 | names.push_back(wxGetNameFromGtkOptionEntry(&entries[n])); | |
530 | ||
531 | const gchar * const entryDesc = entries[n].description; | |
532 | desc.push_back(wxString(entryDesc)); | |
533 | } | |
534 | ||
535 | g_option_group_free (gtkOpts); | |
536 | } | |
537 | } | |
538 | #else | |
539 | wxUnusedVar(names); | |
540 | wxUnusedVar(desc); | |
541 | #endif // __WXGTK26__ | |
542 | ||
543 | return usage; | |
544 | } | |
545 |