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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 | ||
23 | #include "wx/process.h" | |
24 | #include "wx/sysopt.h" | |
25 | ||
26 | #include "wx/unix/execute.h" | |
27 | ||
28 | #include "wx/gtk/private/timer.h" | |
29 | #include "wx/evtloop.h" | |
30 | ||
31 | #ifdef __WXDEBUG__ | |
32 | #include "wx/gtk/assertdlg_gtk.h" | |
33 | #if wxUSE_STACKWALKER | |
34 | #include "wx/stackwalk.h" | |
35 | #endif // wxUSE_STACKWALKER | |
36 | #endif // __WXDEBUG__ | |
37 | ||
38 | #include <stdarg.h> | |
39 | #include <string.h> | |
40 | #include <sys/stat.h> | |
41 | #include <sys/types.h> | |
42 | #include <sys/wait.h> // for WNOHANG | |
43 | #include <unistd.h> | |
44 | ||
45 | #include "glib.h" | |
46 | #include "gdk/gdk.h" | |
47 | #include "gtk/gtk.h" | |
48 | #include "gdk/gdkx.h" | |
49 | ||
50 | #ifdef HAVE_X11_XKBLIB_H | |
51 | /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with | |
52 | * field named "explicit" - which is, of course, an error for a C++ | |
53 | * compiler. To be on the safe side, just redefine it everywhere. */ | |
54 | #define explicit __wx_explicit | |
55 | ||
56 | #include "X11/XKBlib.h" | |
57 | ||
58 | #undef explicit | |
59 | #endif // HAVE_X11_XKBLIB_H | |
60 | ||
61 | ||
62 | #if wxUSE_DETECT_SM | |
63 | #include "X11/Xlib.h" | |
64 | #include "X11/SM/SMlib.h" | |
65 | #endif | |
66 | ||
67 | //----------------------------------------------------------------------------- | |
68 | // data | |
69 | //----------------------------------------------------------------------------- | |
70 | ||
71 | extern GtkWidget *wxGetRootWindow(); | |
72 | ||
73 | //---------------------------------------------------------------------------- | |
74 | // misc. | |
75 | //---------------------------------------------------------------------------- | |
76 | #ifndef __EMX__ | |
77 | // on OS/2, we use the wxBell from wxBase library | |
78 | ||
79 | void wxBell() | |
80 | { | |
81 | gdk_beep(); | |
82 | } | |
83 | #endif | |
84 | ||
85 | /* Don't synthesize KeyUp events holding down a key and producing | |
86 | KeyDown events with autorepeat. */ | |
87 | #ifdef HAVE_X11_XKBLIB_H | |
88 | bool wxSetDetectableAutoRepeat( bool flag ) | |
89 | { | |
90 | Bool result; | |
91 | XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result ); | |
92 | return result; /* true if keyboard hardware supports this mode */ | |
93 | } | |
94 | #else | |
95 | bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) ) | |
96 | { | |
97 | return false; | |
98 | } | |
99 | #endif | |
100 | ||
101 | // Escapes string so that it is valid Pango markup XML string: | |
102 | wxString wxEscapeStringForPangoMarkup(const wxString& str) | |
103 | { | |
104 | size_t len = str.length(); | |
105 | wxString out; | |
106 | out.Alloc(len); | |
107 | for (size_t i = 0; i < len; i++) | |
108 | { | |
109 | wxChar c = str[i]; | |
110 | switch (c) | |
111 | { | |
112 | case _T('&'): | |
113 | out << _T("&"); | |
114 | break; | |
115 | case _T('<'): | |
116 | out << _T("<"); | |
117 | break; | |
118 | case _T('>'): | |
119 | out << _T(">"); | |
120 | break; | |
121 | case _T('\''): | |
122 | out << _T("'"); | |
123 | break; | |
124 | case _T('"'): | |
125 | out << _T("""); | |
126 | break; | |
127 | default: | |
128 | out << c; | |
129 | break; | |
130 | } | |
131 | } | |
132 | return out; | |
133 | } | |
134 | ||
135 | ||
136 | // ---------------------------------------------------------------------------- | |
137 | // display characterstics | |
138 | // ---------------------------------------------------------------------------- | |
139 | ||
140 | void *wxGetDisplay() | |
141 | { | |
142 | return GDK_DISPLAY(); | |
143 | } | |
144 | ||
145 | void wxDisplaySize( int *width, int *height ) | |
146 | { | |
147 | if (width) *width = gdk_screen_width(); | |
148 | if (height) *height = gdk_screen_height(); | |
149 | } | |
150 | ||
151 | void wxDisplaySizeMM( int *width, int *height ) | |
152 | { | |
153 | if (width) *width = gdk_screen_width_mm(); | |
154 | if (height) *height = gdk_screen_height_mm(); | |
155 | } | |
156 | ||
157 | void wxClientDisplayRect(int *x, int *y, int *width, int *height) | |
158 | { | |
159 | // This is supposed to return desktop dimensions minus any window | |
160 | // manager panels, menus, taskbars, etc. If there is a way to do that | |
161 | // for this platform please fix this function, otherwise it defaults | |
162 | // to the entire desktop. | |
163 | if (x) *x = 0; | |
164 | if (y) *y = 0; | |
165 | wxDisplaySize(width, height); | |
166 | } | |
167 | ||
168 | void wxGetMousePosition( int* x, int* y ) | |
169 | { | |
170 | gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL ); | |
171 | } | |
172 | ||
173 | bool wxColourDisplay() | |
174 | { | |
175 | return true; | |
176 | } | |
177 | ||
178 | int wxDisplayDepth() | |
179 | { | |
180 | return gdk_drawable_get_visual( wxGetRootWindow()->window )->depth; | |
181 | } | |
182 | ||
183 | wxWindow* wxFindWindowAtPoint(const wxPoint& pt) | |
184 | { | |
185 | return wxGenericFindWindowAtPoint(pt); | |
186 | } | |
187 | ||
188 | #if !wxUSE_UNICODE | |
189 | ||
190 | wxCharBuffer wxConvertToGTK(const wxString& s, wxFontEncoding enc) | |
191 | { | |
192 | wxWCharBuffer wbuf; | |
193 | if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT ) | |
194 | { | |
195 | wbuf = wxConvUI->cMB2WC(s.c_str()); | |
196 | } | |
197 | else // another encoding, use generic conversion class | |
198 | { | |
199 | wbuf = wxCSConv(enc).cMB2WC(s.c_str()); | |
200 | } | |
201 | ||
202 | if ( !wbuf && !s.empty() ) | |
203 | { | |
204 | // conversion failed, but we still want to show something to the user | |
205 | // even if it's going to be wrong it is better than nothing | |
206 | // | |
207 | // we choose ISO8859-1 here arbitrarily, it's just the most common | |
208 | // encoding probably and, also importantly here, conversion from it | |
209 | // never fails as it's done internally by wxCSConv | |
210 | wbuf = wxCSConv(wxFONTENCODING_ISO8859_1).cMB2WC(s.c_str()); | |
211 | } | |
212 | ||
213 | return wxConvUTF8.cWC2MB(wbuf); | |
214 | } | |
215 | ||
216 | wxCharBuffer wxConvertFromGTK(const wxString& s, wxFontEncoding enc) | |
217 | { | |
218 | // this conversion should never fail as GTK+ always uses UTF-8 internally | |
219 | // so there are no complications here | |
220 | const wxWCharBuffer wbuf(wxConvUTF8.cMB2WC(s.c_str())); | |
221 | if ( enc == wxFONTENCODING_SYSTEM ) | |
222 | return wxConvUI->cWC2MB(wbuf); | |
223 | ||
224 | return wxCSConv(enc).cWC2MB(wbuf); | |
225 | } | |
226 | ||
227 | #endif // !wxUSE_UNICODE | |
228 | ||
229 | // Returns false if version is certainly greater or equal than major.minor.micro | |
230 | // Returns true if version is lower than major.minor.micro OR it cannot be | |
231 | // determined and one should not rely on the availability of pango version | |
232 | // major.minor.micro, nor the non-availability | |
233 | const gchar *wx_pango_version_check (int major, int minor, int micro) | |
234 | { | |
235 | #ifdef PANGO_VERSION_MAJOR | |
236 | if (!gtk_check_version (2,11,0)) | |
237 | { | |
238 | // GTK+ 2.11 requires Pango >= 1.15.3 and pango_version_check | |
239 | // was added in Pango 1.15.2 thus we know for sure the pango lib we're | |
240 | // using has the pango_version_check function: | |
241 | return pango_version_check (major, minor, micro); | |
242 | } | |
243 | ||
244 | return "can't check"; | |
245 | #else // !PANGO_VERSION_MAJOR | |
246 | return "too old headers"; | |
247 | #endif | |
248 | } | |
249 | ||
250 | ||
251 | // ---------------------------------------------------------------------------- | |
252 | // subprocess routines | |
253 | // ---------------------------------------------------------------------------- | |
254 | ||
255 | extern "C" { | |
256 | static | |
257 | void GTK_EndProcessDetector(gpointer data, gint source, | |
258 | GdkInputCondition WXUNUSED(condition) ) | |
259 | { | |
260 | wxEndProcessData *proc_data = (wxEndProcessData *)data; | |
261 | ||
262 | // has the process really terminated? unfortunately GDK (or GLib) seem to | |
263 | // generate G_IO_HUP notification even when it simply tries to read from a | |
264 | // closed fd and hasn't terminated at all | |
265 | int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid); | |
266 | int status = 0; | |
267 | int rc = waitpid(pid, &status, WNOHANG); | |
268 | ||
269 | if ( rc == 0 ) | |
270 | { | |
271 | // no, it didn't exit yet, continue waiting | |
272 | return; | |
273 | } | |
274 | ||
275 | // set exit code to -1 if something bad happened | |
276 | proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status) | |
277 | : -1; | |
278 | ||
279 | // child exited, end waiting | |
280 | close(source); | |
281 | ||
282 | // don't call us again! | |
283 | gdk_input_remove(proc_data->tag); | |
284 | ||
285 | wxHandleProcessTermination(proc_data); | |
286 | } | |
287 | } | |
288 | ||
289 | int wxAddProcessCallback(wxEndProcessData *proc_data, int fd) | |
290 | { | |
291 | int tag = gdk_input_add(fd, | |
292 | GDK_INPUT_READ, | |
293 | GTK_EndProcessDetector, | |
294 | (gpointer)proc_data); | |
295 | ||
296 | return tag; | |
297 | } | |
298 | ||
299 | ||
300 | ||
301 | // ---------------------------------------------------------------------------- | |
302 | // wxPlatformInfo-related | |
303 | // ---------------------------------------------------------------------------- | |
304 | ||
305 | wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const | |
306 | { | |
307 | if ( verMaj ) | |
308 | *verMaj = gtk_major_version; | |
309 | if ( verMin ) | |
310 | *verMin = gtk_minor_version; | |
311 | ||
312 | return wxPORT_GTK; | |
313 | } | |
314 | ||
315 | #if wxUSE_TIMER | |
316 | ||
317 | wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) | |
318 | { | |
319 | return new wxGTKTimerImpl(timer); | |
320 | } | |
321 | ||
322 | #endif // wxUSE_TIMER | |
323 | ||
324 | #if wxUSE_DETECT_SM | |
325 | static wxString GetSM() | |
326 | { | |
327 | class Dpy | |
328 | { | |
329 | public: | |
330 | Dpy() { m_dpy = XOpenDisplay(NULL); } | |
331 | ~Dpy() { if ( m_dpy ) XCloseDisplay(m_dpy); } | |
332 | ||
333 | operator Display *() const { return m_dpy; } | |
334 | private: | |
335 | Display *m_dpy; | |
336 | } dpy; | |
337 | ||
338 | if ( !dpy ) | |
339 | return wxEmptyString; | |
340 | ||
341 | char smerr[256]; | |
342 | char *client_id; | |
343 | SmcConn smc_conn = SmcOpenConnection(NULL, NULL, | |
344 | 999, 999, | |
345 | 0 /* mask */, NULL /* callbacks */, | |
346 | NULL, &client_id, | |
347 | WXSIZEOF(smerr), smerr); | |
348 | ||
349 | if ( !smc_conn ) | |
350 | { | |
351 | wxLogWarning(_("Failed to connect to session manager: %s"), smerr); | |
352 | return wxEmptyString; | |
353 | } | |
354 | ||
355 | char *vendor = SmcVendor(smc_conn); | |
356 | wxString ret = wxString::FromAscii( vendor ); | |
357 | free(vendor); | |
358 | ||
359 | SmcCloseConnection(smc_conn, 0, NULL); | |
360 | free(client_id); | |
361 | ||
362 | return ret; | |
363 | } | |
364 | #endif // wxUSE_DETECT_SM | |
365 | ||
366 | ||
367 | //----------------------------------------------------------------------------- | |
368 | // wxGUIAppTraits | |
369 | //----------------------------------------------------------------------------- | |
370 | ||
371 | wxEventLoopBase *wxGUIAppTraits::CreateEventLoop() | |
372 | { | |
373 | return new wxEventLoop(); | |
374 | } | |
375 | ||
376 | ||
377 | #if wxUSE_INTL | |
378 | void wxGUIAppTraits::SetLocale() | |
379 | { | |
380 | gtk_set_locale(); | |
381 | wxUpdateLocaleIsUtf8(); | |
382 | } | |
383 | #endif | |
384 | ||
385 | #ifdef __WXDEBUG__ | |
386 | ||
387 | #if wxUSE_STACKWALKER | |
388 | ||
389 | // private helper class | |
390 | class StackDump : public wxStackWalker | |
391 | { | |
392 | public: | |
393 | StackDump(GtkAssertDialog *dlg) { m_dlg=dlg; } | |
394 | ||
395 | protected: | |
396 | virtual void OnStackFrame(const wxStackFrame& frame) | |
397 | { | |
398 | wxString fncname = frame.GetName(); | |
399 | wxString fncargs = fncname; | |
400 | ||
401 | size_t n = fncname.find(wxT('(')); | |
402 | if (n != wxString::npos) | |
403 | { | |
404 | // remove arguments from function name | |
405 | fncname.erase(n); | |
406 | ||
407 | // remove function name and brackets from arguments | |
408 | fncargs = fncargs.substr(n+1, fncargs.length()-n-2); | |
409 | } | |
410 | else | |
411 | fncargs = wxEmptyString; | |
412 | ||
413 | // append this stack frame's info in the dialog | |
414 | if (!frame.GetFileName().empty() || !fncname.empty()) | |
415 | gtk_assert_dialog_append_stack_frame(m_dlg, | |
416 | fncname.mb_str(), | |
417 | fncargs.mb_str(), | |
418 | frame.GetFileName().mb_str(), | |
419 | frame.GetLine()); | |
420 | } | |
421 | ||
422 | private: | |
423 | GtkAssertDialog *m_dlg; | |
424 | }; | |
425 | ||
426 | // the callback functions must be extern "C" to comply with GTK+ declarations | |
427 | extern "C" | |
428 | { | |
429 | void get_stackframe_callback(StackDump *dump) | |
430 | { | |
431 | // skip over frames up to including wxOnAssert() | |
432 | dump->ProcessFrames(3); | |
433 | } | |
434 | } | |
435 | ||
436 | #endif // wxUSE_STACKWALKER | |
437 | ||
438 | bool wxGUIAppTraits::ShowAssertDialog(const wxString& msg) | |
439 | { | |
440 | // under GTK2 we prefer to use a dialog widget written using directly GTK+; | |
441 | // in fact we cannot use a dialog written using wxWidgets: it would need | |
442 | // the wxWidgets idle processing to work correctly! | |
443 | GtkWidget *dialog = gtk_assert_dialog_new(); | |
444 | gtk_assert_dialog_set_message(GTK_ASSERT_DIALOG(dialog), msg.mb_str()); | |
445 | ||
446 | #if wxUSE_STACKWALKER | |
447 | // don't show more than maxLines or we could get a dialog too tall to be | |
448 | // shown on screen: 20 should be ok everywhere as even with 15 pixel high | |
449 | // characters it is still only 300 pixels... | |
450 | static const int maxLines = 20; | |
451 | ||
452 | // save current stack frame... | |
453 | StackDump dump(GTK_ASSERT_DIALOG(dialog)); | |
454 | dump.SaveStack(maxLines); | |
455 | ||
456 | // ...but process it only if the user needs it | |
457 | gtk_assert_dialog_set_backtrace_callback(GTK_ASSERT_DIALOG(dialog), | |
458 | (GtkAssertDialogStackFrameCallback)get_stackframe_callback, | |
459 | &dump); | |
460 | #endif // wxUSE_STACKWALKER | |
461 | ||
462 | gint result = gtk_dialog_run(GTK_DIALOG (dialog)); | |
463 | bool returnCode = false; | |
464 | switch (result) | |
465 | { | |
466 | case GTK_ASSERT_DIALOG_STOP: | |
467 | wxTrap(); | |
468 | break; | |
469 | case GTK_ASSERT_DIALOG_CONTINUE: | |
470 | // nothing to do | |
471 | break; | |
472 | case GTK_ASSERT_DIALOG_CONTINUE_SUPPRESSING: | |
473 | // no more asserts | |
474 | returnCode = true; | |
475 | break; | |
476 | ||
477 | default: | |
478 | wxFAIL_MSG( _T("unexpected return code from GtkAssertDialog") ); | |
479 | } | |
480 | ||
481 | gtk_widget_destroy(dialog); | |
482 | return returnCode; | |
483 | } | |
484 | ||
485 | #endif // __WXDEBUG__ | |
486 | ||
487 | wxString wxGUIAppTraits::GetDesktopEnvironment() const | |
488 | { | |
489 | wxString de = wxSystemOptions::GetOption(_T("gtk.desktop")); | |
490 | #if wxUSE_DETECT_SM | |
491 | if ( de.empty() ) | |
492 | { | |
493 | static const wxString s_SM = GetSM(); | |
494 | ||
495 | if (s_SM == wxT("GnomeSM")) | |
496 | de = wxT("GNOME"); | |
497 | else if (s_SM == wxT("KDE")) | |
498 | de = wxT("KDE"); | |
499 | } | |
500 | #endif // wxUSE_DETECT_SM | |
501 | ||
502 | return de; | |
503 | } | |
504 | ||
505 | #ifdef __WXGTK26__ | |
506 | ||
507 | // see the hack below in wxCmdLineParser::GetUsageString(). | |
508 | // TODO: replace this hack with a g_option_group_get_entries() | |
509 | // call as soon as such function exists | |
510 | struct _GOptionGroup | |
511 | { | |
512 | gchar *name; | |
513 | gchar *description; | |
514 | gchar *help_description; | |
515 | ||
516 | GDestroyNotify destroy_notify; | |
517 | gpointer user_data; | |
518 | ||
519 | GTranslateFunc translate_func; | |
520 | GDestroyNotify translate_notify; | |
521 | gpointer translate_data; | |
522 | ||
523 | GOptionEntry *entries; | |
524 | gint n_entries; | |
525 | ||
526 | GOptionParseFunc pre_parse_func; | |
527 | GOptionParseFunc post_parse_func; | |
528 | GOptionErrorFunc error_func; | |
529 | }; | |
530 | ||
531 | wxString wxGetNameFromGtkOptionEntry(const GOptionEntry *opt) | |
532 | { | |
533 | wxString ret; | |
534 | ||
535 | if (opt->short_name) | |
536 | ret << _T("-") << opt->short_name; | |
537 | if (opt->long_name) | |
538 | { | |
539 | if (!ret.empty()) | |
540 | ret << _T(", "); | |
541 | ret << _T("--") << opt->long_name; | |
542 | ||
543 | if (opt->arg_description) | |
544 | ret << _T("=") << opt->arg_description; | |
545 | } | |
546 | ||
547 | return _T(" ") + ret; | |
548 | } | |
549 | ||
550 | #endif // __WXGTK26__ | |
551 | ||
552 | wxString | |
553 | wxGUIAppTraits::GetStandardCmdLineOptions(wxArrayString& names, | |
554 | wxArrayString& desc) const | |
555 | { | |
556 | wxString usage; | |
557 | ||
558 | #ifdef __WXGTK26__ | |
559 | // check whether GTK version is greater than 2.6 but also lower than 2.12 | |
560 | // because, as we use the undocumented _GOptionGroup struct, we don't want | |
561 | // to run this code with future versions which might change it (2.11 is the | |
562 | // latest one at the time of this writing) | |
563 | if (!gtk_check_version(2,6,0) && | |
564 | gtk_check_version(2,12,0)) | |
565 | { | |
566 | usage << _("The following standard GTK+ options are also supported:\n"); | |
567 | ||
568 | // passing true here means that the function can open the default | |
569 | // display while parsing (not really used here anyhow) | |
570 | GOptionGroup *gtkOpts = gtk_get_option_group(true); | |
571 | ||
572 | // WARNING: here we access the internals of GOptionGroup: | |
573 | GOptionEntry *entries = ((_GOptionGroup*)gtkOpts)->entries; | |
574 | unsigned int n_entries = ((_GOptionGroup*)gtkOpts)->n_entries; | |
575 | wxArrayString namesOptions, descOptions; | |
576 | ||
577 | for ( size_t n = 0; n < n_entries; n++ ) | |
578 | { | |
579 | if ( entries[n].flags & G_OPTION_FLAG_HIDDEN ) | |
580 | continue; // skip | |
581 | ||
582 | names.push_back(wxGetNameFromGtkOptionEntry(&entries[n])); | |
583 | ||
584 | const gchar * const entryDesc = entries[n].description; | |
585 | desc.push_back(entryDesc ? wxString(entryDesc) : _T("")); | |
586 | } | |
587 | ||
588 | g_option_group_free (gtkOpts); | |
589 | } | |
590 | #else | |
591 | wxUnusedVar(names); | |
592 | wxUnusedVar(desc); | |
593 | #endif // __WXGTK26__ | |
594 | ||
595 | return usage; | |
596 | } | |
597 |