1 |
// qsampler.cpp |
2 |
// |
3 |
/**************************************************************************** |
4 |
Copyright (C) 2004-2020, rncbc aka Rui Nuno Capela. All rights reserved. |
5 |
Copyright (C) 2007,2008,2015,2019 Christian Schoenebeck |
6 |
|
7 |
This program is free software; you can redistribute it and/or |
8 |
modify it under the terms of the GNU General Public License |
9 |
as published by the Free Software Foundation; either version 2 |
10 |
of the License, or (at your option) any later version. |
11 |
|
12 |
This program is distributed in the hope that it will be useful, |
13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 |
GNU General Public License for more details. |
16 |
|
17 |
You should have received a copy of the GNU General Public License along |
18 |
with this program; if not, write to the Free Software Foundation, Inc., |
19 |
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
20 |
|
21 |
*****************************************************************************/ |
22 |
|
23 |
#include "qsampler.h" |
24 |
|
25 |
#include "qsamplerOptions.h" |
26 |
#include "qsamplerMainForm.h" |
27 |
|
28 |
#include "qsamplerPaletteForm.h" |
29 |
|
30 |
#include <QDir> |
31 |
|
32 |
#include <QStyleFactory> |
33 |
|
34 |
#include <QLibraryInfo> |
35 |
#include <QTranslator> |
36 |
#include <QLocale> |
37 |
|
38 |
#if defined(__APPLE__) // Toshi Nagata 20080105 |
39 |
#include <QDir> |
40 |
#endif |
41 |
|
42 |
#ifndef CONFIG_PREFIX |
43 |
#define CONFIG_PREFIX "/usr/local" |
44 |
#endif |
45 |
|
46 |
#ifndef CONFIG_DATADIR |
47 |
#define CONFIG_DATADIR CONFIG_PREFIX "/share" |
48 |
#endif |
49 |
|
50 |
#ifndef CONFIG_LIBDIR |
51 |
#if defined(__x86_64__) |
52 |
#define CONFIG_LIBDIR CONFIG_PREFIX "/lib64" |
53 |
#else |
54 |
#define CONFIG_LIBDIR CONFIG_PREFIX "/lib" |
55 |
#endif |
56 |
#endif |
57 |
|
58 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
59 |
#define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt4/plugins" |
60 |
#else |
61 |
#define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt5/plugins" |
62 |
#endif |
63 |
|
64 |
#if defined(__WIN32__) || defined(_WIN32) || defined(WIN32) |
65 |
#define RELATIVE_LOCALE_DIR "/share/locale" |
66 |
#elif defined(__APPLE__) |
67 |
#define RELATIVE_LOCALE_DIR "/../Resources" |
68 |
#endif |
69 |
|
70 |
|
71 |
//------------------------------------------------------------------------- |
72 |
// Singleton application instance stuff (Qt/X11 only atm.) |
73 |
// |
74 |
|
75 |
#ifdef CONFIG_XUNIQUE |
76 |
|
77 |
#define QSAMPLER_XUNIQUE "qsamplerApplication" |
78 |
|
79 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
80 |
#ifdef CONFIG_X11 |
81 |
|
82 |
#include <unistd.h> /* for gethostname() */ |
83 |
|
84 |
#include <X11/Xatom.h> |
85 |
#include <X11/Xlib.h> |
86 |
|
87 |
#endif // CONFIG_X11 |
88 |
#else |
89 |
#include <QSharedMemory> |
90 |
#include <QLocalServer> |
91 |
#include <QLocalSocket> |
92 |
#include <QHostInfo> |
93 |
#endif |
94 |
|
95 |
#endif // CONFIG_XUNIQUE |
96 |
|
97 |
|
98 |
// Constructor. |
99 |
qsamplerApplication::qsamplerApplication ( int& argc, char **argv ) |
100 |
: QApplication(argc, argv), |
101 |
m_pQtTranslator(nullptr), m_pMyTranslator(nullptr), m_pWidget(nullptr) |
102 |
{ |
103 |
#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0) |
104 |
QApplication::setApplicationName(QSAMPLER_TITLE); |
105 |
QApplication::setApplicationDisplayName(QSAMPLER_TITLE); |
106 |
// QSAMPLER_TITLE " - " + QObject::tr(QSAMPLER_SUBTITLE)); |
107 |
#endif |
108 |
// Load translation support. |
109 |
QLocale loc; |
110 |
if (loc.language() != QLocale::C) { |
111 |
// Try own Qt translation... |
112 |
m_pQtTranslator = new QTranslator(this); |
113 |
QString sLocName = "qt_" + loc.name(); |
114 |
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) |
115 |
QString sLocPath = QLibraryInfo::path(QLibraryInfo::TranslationsPath); |
116 |
#else |
117 |
QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath); |
118 |
#endif |
119 |
if (m_pQtTranslator->load(sLocName, sLocPath)) { |
120 |
QApplication::installTranslator(m_pQtTranslator); |
121 |
} else { |
122 |
#ifdef RELATIVE_LOCALE_DIR |
123 |
sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR; |
124 |
if (m_pQtTranslator->load(sLocName, sLocPath)) { |
125 |
QApplication::installTranslator(m_pQtTranslator); |
126 |
} else { |
127 |
#endif |
128 |
delete m_pQtTranslator; |
129 |
m_pQtTranslator = nullptr; |
130 |
#ifdef CONFIG_DEBUG |
131 |
qWarning("Warning: no translation found for '%s' locale: %s/%s.qm", |
132 |
loc.name().toUtf8().constData(), |
133 |
sLocPath.toUtf8().constData(), |
134 |
sLocName.toUtf8().constData()); |
135 |
#endif |
136 |
#ifdef RELATIVE_LOCALE_DIR |
137 |
} |
138 |
#endif |
139 |
} |
140 |
// Try own application translation... |
141 |
m_pMyTranslator = new QTranslator(this); |
142 |
sLocName = "qsampler_" + loc.name(); |
143 |
if (m_pMyTranslator->load(sLocName, sLocPath)) { |
144 |
QApplication::installTranslator(m_pMyTranslator); |
145 |
} else { |
146 |
#ifdef RELATIVE_LOCALE_DIR |
147 |
sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR; |
148 |
#else |
149 |
sLocPath = CONFIG_DATADIR "/qsampler/translations"; |
150 |
#endif |
151 |
if (m_pMyTranslator->load(sLocName, sLocPath)) { |
152 |
QApplication::installTranslator(m_pMyTranslator); |
153 |
} else { |
154 |
delete m_pMyTranslator; |
155 |
m_pMyTranslator = nullptr; |
156 |
#ifdef CONFIG_DEBUG |
157 |
qWarning("Warning: no translation found for '%s' locale: %s/%s.qm", |
158 |
loc.name().toUtf8().constData(), |
159 |
sLocPath.toUtf8().constData(), |
160 |
sLocName.toUtf8().constData()); |
161 |
#endif |
162 |
} |
163 |
} |
164 |
} |
165 |
#ifdef CONFIG_XUNIQUE |
166 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
167 |
#ifdef CONFIG_X11 |
168 |
m_pDisplay = nullptr; |
169 |
m_aUnique = 0; |
170 |
m_wOwner = 0; |
171 |
#endif // CONFIG_X11 |
172 |
#else |
173 |
m_pMemory = nullptr; |
174 |
m_pServer = nullptr; |
175 |
#endif |
176 |
#endif // CONFIG_XUNIQUE |
177 |
} |
178 |
|
179 |
|
180 |
// Destructor. |
181 |
qsamplerApplication::~qsamplerApplication (void) |
182 |
{ |
183 |
#ifdef CONFIG_XUNIQUE |
184 |
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0) |
185 |
if (m_pServer) { |
186 |
m_pServer->close(); |
187 |
delete m_pServer; |
188 |
m_pServer = nullptr; |
189 |
} |
190 |
if (m_pMemory) { |
191 |
delete m_pMemory; |
192 |
m_pMemory = nullptr; |
193 |
} |
194 |
#endif |
195 |
#endif // CONFIG_XUNIQUE |
196 |
if (m_pMyTranslator) delete m_pMyTranslator; |
197 |
if (m_pQtTranslator) delete m_pQtTranslator; |
198 |
} |
199 |
|
200 |
|
201 |
// Main application widget accessors. |
202 |
void qsamplerApplication::setMainWidget ( QWidget *pWidget ) |
203 |
{ |
204 |
m_pWidget = pWidget; |
205 |
#ifdef CONFIG_XUNIQUE |
206 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
207 |
#ifdef CONFIG_X11 |
208 |
m_wOwner = m_pWidget->winId(); |
209 |
if (m_pDisplay && m_wOwner) { |
210 |
XGrabServer(m_pDisplay); |
211 |
XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime); |
212 |
XUngrabServer(m_pDisplay); |
213 |
} |
214 |
#endif // CONFIG_X11 |
215 |
#endif |
216 |
#endif // CONFIG_XUNIQUE |
217 |
} |
218 |
|
219 |
|
220 |
// Check if another instance is running, |
221 |
// and raise its proper main widget... |
222 |
bool qsamplerApplication::setup (void) |
223 |
{ |
224 |
#ifdef CONFIG_XUNIQUE |
225 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
226 |
#ifdef CONFIG_X11 |
227 |
m_pDisplay = QX11Info::display(); |
228 |
if (m_pDisplay) { |
229 |
QString sUnique = QSAMPLER_XUNIQUE; |
230 |
char szHostName[255]; |
231 |
if (::gethostname(szHostName, sizeof(szHostName)) == 0) { |
232 |
sUnique += '@'; |
233 |
sUnique += szHostName; |
234 |
} |
235 |
m_aUnique = XInternAtom(m_pDisplay, sUnique.toUtf8().constData(), false); |
236 |
XGrabServer(m_pDisplay); |
237 |
m_wOwner = XGetSelectionOwner(m_pDisplay, m_aUnique); |
238 |
XUngrabServer(m_pDisplay); |
239 |
if (m_wOwner != None) { |
240 |
// First, notify any freedesktop.org WM |
241 |
// that we're about to show the main widget... |
242 |
Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay); |
243 |
int iScreen = XScreenNumberOfScreen(pScreen); |
244 |
XEvent ev; |
245 |
memset(&ev, 0, sizeof(ev)); |
246 |
ev.xclient.type = ClientMessage; |
247 |
ev.xclient.display = m_pDisplay; |
248 |
ev.xclient.window = m_wOwner; |
249 |
ev.xclient.message_type = XInternAtom(m_pDisplay, "_NET_ACTIVE_WINDOW", false); |
250 |
ev.xclient.format = 32; |
251 |
ev.xclient.data.l[0] = 0; // Source indication. |
252 |
ev.xclient.data.l[1] = 0; // Timestamp. |
253 |
ev.xclient.data.l[2] = 0; // Requestor's currently active window (none) |
254 |
ev.xclient.data.l[3] = 0; |
255 |
ev.xclient.data.l[4] = 0; |
256 |
XSelectInput(m_pDisplay, m_wOwner, StructureNotifyMask); |
257 |
XSendEvent(m_pDisplay, RootWindow(m_pDisplay, iScreen), false, |
258 |
(SubstructureNotifyMask | SubstructureRedirectMask), &ev); |
259 |
XSync(m_pDisplay, false); |
260 |
XRaiseWindow(m_pDisplay, m_wOwner); |
261 |
// And then, let it get caught on destination |
262 |
// by QApplication::native/x11EventFilter... |
263 |
const QByteArray value = QSAMPLER_XUNIQUE; |
264 |
XChangeProperty( |
265 |
m_pDisplay, |
266 |
m_wOwner, |
267 |
m_aUnique, |
268 |
m_aUnique, 8, |
269 |
PropModeReplace, |
270 |
(unsigned char *) value.data(), |
271 |
value.length()); |
272 |
// Done. |
273 |
return true; |
274 |
} |
275 |
} |
276 |
#endif // CONFIG_X11 |
277 |
return false; |
278 |
#else |
279 |
m_sUnique = QCoreApplication::applicationName(); |
280 |
m_sUnique += '@'; |
281 |
m_sUnique += QHostInfo::localHostName(); |
282 |
#ifdef Q_OS_UNIX |
283 |
m_pMemory = new QSharedMemory(m_sUnique); |
284 |
m_pMemory->attach(); |
285 |
delete m_pMemory; |
286 |
#endif |
287 |
m_pMemory = new QSharedMemory(m_sUnique); |
288 |
bool bServer = false; |
289 |
const qint64 pid = QCoreApplication::applicationPid(); |
290 |
struct Data { qint64 pid; }; |
291 |
if (m_pMemory->create(sizeof(Data))) { |
292 |
m_pMemory->lock(); |
293 |
Data *pData = static_cast<Data *> (m_pMemory->data()); |
294 |
if (pData) { |
295 |
pData->pid = pid; |
296 |
bServer = true; |
297 |
} |
298 |
m_pMemory->unlock(); |
299 |
} |
300 |
else |
301 |
if (m_pMemory->attach()) { |
302 |
m_pMemory->lock(); // maybe not necessary? |
303 |
Data *pData = static_cast<Data *> (m_pMemory->data()); |
304 |
if (pData) |
305 |
bServer = (pData->pid == pid); |
306 |
m_pMemory->unlock(); |
307 |
} |
308 |
if (bServer) { |
309 |
QLocalServer::removeServer(m_sUnique); |
310 |
m_pServer = new QLocalServer(); |
311 |
m_pServer->setSocketOptions(QLocalServer::UserAccessOption); |
312 |
m_pServer->listen(m_sUnique); |
313 |
QObject::connect(m_pServer, |
314 |
SIGNAL(newConnection()), |
315 |
SLOT(newConnectionSlot())); |
316 |
} else { |
317 |
QLocalSocket socket; |
318 |
socket.connectToServer(m_sUnique); |
319 |
if (socket.state() == QLocalSocket::ConnectingState) |
320 |
socket.waitForConnected(200); |
321 |
if (socket.state() == QLocalSocket::ConnectedState) { |
322 |
socket.write(QCoreApplication::arguments().join(' ').toUtf8()); |
323 |
socket.flush(); |
324 |
socket.waitForBytesWritten(200); |
325 |
} |
326 |
} |
327 |
return !bServer; |
328 |
#endif |
329 |
#else |
330 |
return false; |
331 |
#endif // !CONFIG_XUNIQUE |
332 |
} |
333 |
|
334 |
|
335 |
#ifdef CONFIG_XUNIQUE |
336 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
337 |
#ifdef CONFIG_X11 |
338 |
|
339 |
void qsamplerApplication::x11PropertyNotify ( Window w ) |
340 |
{ |
341 |
if (m_pDisplay && m_pWidget && m_wOwner == w) { |
342 |
// Always check whether our property-flag is still around... |
343 |
Atom aType; |
344 |
int iFormat = 0; |
345 |
unsigned long iItems = 0; |
346 |
unsigned long iAfter = 0; |
347 |
unsigned char *pData = 0; |
348 |
if (XGetWindowProperty( |
349 |
m_pDisplay, |
350 |
m_wOwner, |
351 |
m_aUnique, |
352 |
0, 1024, |
353 |
false, |
354 |
m_aUnique, |
355 |
&aType, |
356 |
&iFormat, |
357 |
&iItems, |
358 |
&iAfter, |
359 |
&pData) == Success |
360 |
&& aType == m_aUnique && iItems > 0 && iAfter == 0) { |
361 |
// Avoid repeating it-self... |
362 |
XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique); |
363 |
// Just make it always shows up fine... |
364 |
m_pWidget->show(); |
365 |
m_pWidget->raise(); |
366 |
m_pWidget->activateWindow(); |
367 |
} |
368 |
// Free any left-overs... |
369 |
if (iItems > 0 && pData) |
370 |
XFree(pData); |
371 |
} |
372 |
} |
373 |
|
374 |
|
375 |
bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
376 |
{ |
377 |
if (pEv->type == PropertyNotify |
378 |
&& pEv->xproperty.state == PropertyNewValue) |
379 |
x11PropertyNotify(pEv->xproperty.window); |
380 |
return QApplication::x11EventFilter(pEv); |
381 |
} |
382 |
|
383 |
#endif // CONFIG_X11 |
384 |
#else |
385 |
|
386 |
// Local server conection slot. |
387 |
void qsamplerApplication::newConnectionSlot (void) |
388 |
{ |
389 |
QLocalSocket *pSocket = m_pServer->nextPendingConnection(); |
390 |
QObject::connect(pSocket, |
391 |
SIGNAL(readyRead()), |
392 |
SLOT(readyReadSlot())); |
393 |
} |
394 |
|
395 |
// Local server data-ready slot. |
396 |
void qsamplerApplication::readyReadSlot (void) |
397 |
{ |
398 |
QLocalSocket *pSocket = qobject_cast<QLocalSocket *> (sender()); |
399 |
if (pSocket) { |
400 |
const qint64 nread = pSocket->bytesAvailable(); |
401 |
if (nread > 0) { |
402 |
const QByteArray data = pSocket->read(nread); |
403 |
// Just make it always shows up fine... |
404 |
m_pWidget->hide(); |
405 |
m_pWidget->show(); |
406 |
m_pWidget->raise(); |
407 |
m_pWidget->activateWindow(); |
408 |
} |
409 |
} |
410 |
} |
411 |
|
412 |
#endif |
413 |
#endif // CONFIG_XUNIQUE |
414 |
|
415 |
|
416 |
//------------------------------------------------------------------------- |
417 |
// stacktrace - Signal crash handler. |
418 |
// |
419 |
|
420 |
#ifdef CONFIG_STACKTRACE |
421 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
422 |
|
423 |
#include <stdio.h> |
424 |
#include <errno.h> |
425 |
#include <signal.h> |
426 |
#include <unistd.h> |
427 |
#include <sys/wait.h> |
428 |
|
429 |
void stacktrace ( int signo ) |
430 |
{ |
431 |
pid_t pid; |
432 |
int rc; |
433 |
int status = 0; |
434 |
char cmd[80]; |
435 |
|
436 |
// Reinstall default handler; prevent race conditions... |
437 |
::signal(signo, SIG_DFL); |
438 |
|
439 |
static const char *shell = "/bin/sh"; |
440 |
static const char *format = "gdb -q --batch --pid=%d" |
441 |
" --eval-command='thread apply all bt'"; |
442 |
|
443 |
snprintf(cmd, sizeof(cmd), format, (int) getpid()); |
444 |
|
445 |
pid = fork(); |
446 |
|
447 |
// Fork failure! |
448 |
if (pid < 0) |
449 |
return; |
450 |
|
451 |
// Fork child... |
452 |
if (pid == 0) { |
453 |
execl(shell, shell, "-c", cmd, nullptr); |
454 |
_exit(1); |
455 |
return; |
456 |
} |
457 |
|
458 |
// Parent here: wait for child to terminate... |
459 |
do { rc = waitpid(pid, &status, 0); } |
460 |
while ((rc < 0) && (errno == EINTR)); |
461 |
|
462 |
// Dispatch any logging, if any... |
463 |
QApplication::processEvents(QEventLoop::AllEvents, 3000); |
464 |
|
465 |
// Make sure everyone terminates... |
466 |
kill(pid, SIGTERM); |
467 |
_exit(1); |
468 |
} |
469 |
|
470 |
#endif |
471 |
#endif |
472 |
|
473 |
|
474 |
//------------------------------------------------------------------------- |
475 |
// main - The main program trunk. |
476 |
// |
477 |
|
478 |
int main ( int argc, char **argv ) |
479 |
{ |
480 |
Q_INIT_RESOURCE(qsampler); |
481 |
#ifdef CONFIG_STACKTRACE |
482 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
483 |
::signal(SIGILL, stacktrace); |
484 |
::signal(SIGFPE, stacktrace); |
485 |
::signal(SIGSEGV, stacktrace); |
486 |
::signal(SIGABRT, stacktrace); |
487 |
::signal(SIGBUS, stacktrace); |
488 |
#endif |
489 |
#endif |
490 |
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0) |
491 |
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) |
492 |
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); |
493 |
#endif |
494 |
#endif |
495 |
qsamplerApplication app(argc, argv); |
496 |
|
497 |
#if defined(__APPLE__) // Toshi Nagata 20080105 |
498 |
{ |
499 |
// Set the plugin path to @exetutable_path/../plugins |
500 |
QDir dir(QApplication::applicationDirPath()); |
501 |
dir.cdUp(); // "Contents" directory |
502 |
QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins")); |
503 |
|
504 |
// Set the PATH environment variable to include @executable_path/../../.. |
505 |
dir.cdUp(); |
506 |
dir.cdUp(); |
507 |
QString path(getenv("PATH")); |
508 |
path = dir.absolutePath() + ":" + path; |
509 |
setenv("PATH", path.toUtf8().constData(), 1); |
510 |
} |
511 |
#endif |
512 |
|
513 |
// Construct default settings; override with command line arguments. |
514 |
QSampler::Options options; |
515 |
if (!options.parse_args(app.arguments())) { |
516 |
app.quit(); |
517 |
return 1; |
518 |
} |
519 |
|
520 |
// Have another instance running? |
521 |
if (app.setup()) { |
522 |
app.quit(); |
523 |
return 2; |
524 |
} |
525 |
|
526 |
// Special custom styles... |
527 |
if (QDir(CONFIG_PLUGINSDIR).exists()) |
528 |
app.addLibraryPath(CONFIG_PLUGINSDIR); |
529 |
if (!options.sCustomStyleTheme.isEmpty()) |
530 |
app.setStyle(QStyleFactory::create(options.sCustomStyleTheme)); |
531 |
|
532 |
// Custom color theme (eg. "KXStudio")... |
533 |
QPalette pal(app.palette()); |
534 |
if (QSampler::PaletteForm::namedPalette( |
535 |
&options.settings(), options.sCustomColorTheme, pal)) |
536 |
app.setPalette(pal); |
537 |
|
538 |
// Set default base font... |
539 |
if (options.iBaseFontSize > 0) |
540 |
app.setFont(QFont(app.font().family(), options.iBaseFontSize)); |
541 |
|
542 |
// Construct, setup and show the main form. |
543 |
QSampler::MainForm w; |
544 |
w.setup(&options); |
545 |
w.show(); |
546 |
|
547 |
// Settle this one as application main widget... |
548 |
app.setMainWidget(&w); |
549 |
|
550 |
// Register the quit signal/slot. |
551 |
// app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit())); |
552 |
|
553 |
return app.exec(); |
554 |
} |
555 |
|
556 |
|
557 |
// end of qsampler.cpp |
558 |
|