/[svn]/qsampler/trunk/src/qsampler.cpp
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Contents of /qsampler/trunk/src/qsampler.cpp

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Revision 4030 - (show annotations) (download)
Fri Mar 4 15:17:30 2022 UTC (2 years, 1 month ago) by capela
File size: 15893 byte(s)
- Set QApplication::desktopFileName()...
- Main application icon is now presented in scalable format (SVG).
1 // qsampler.cpp
2 //
3 /****************************************************************************
4 Copyright (C) 2004-2022, 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 QT_VERSION >= QT_VERSION_CHECK(5, 2, 0)
39 #include <lscp/client.h>
40 #ifdef CONFIG_LIBGIG
41 #if defined(Q_CC_GNU) || defined(Q_CC_MINGW)
42 #pragma GCC diagnostic push
43 #pragma GCC diagnostic ignored "-Wunused-parameter"
44 #endif
45 #include <gig.h>
46 #if defined(Q_CC_GNU) || defined(Q_CC_MINGW)
47 #pragma GCC diagnostic pop
48 #endif
49 #endif
50 #endif
51
52 #if defined(__APPLE__) // Toshi Nagata 20080105
53 #include <QDir>
54 #endif
55
56 #ifndef CONFIG_PREFIX
57 #define CONFIG_PREFIX "/usr/local"
58 #endif
59
60 #ifndef CONFIG_BINDIR
61 #define CONFIG_BINDIR CONFIG_PREFIX "/bin"
62 #endif
63
64 #ifndef CONFIG_DATADIR
65 #define CONFIG_DATADIR CONFIG_PREFIX "/share"
66 #endif
67
68 #ifndef CONFIG_LIBDIR
69 #if defined(__x86_64__)
70 #define CONFIG_LIBDIR CONFIG_PREFIX "/lib64"
71 #else
72 #define CONFIG_LIBDIR CONFIG_PREFIX "/lib"
73 #endif
74 #endif
75
76 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
77 #define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt4/plugins"
78 #elif QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
79 #define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt5/plugins"
80 #else
81 #define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt6/plugins"
82 #endif
83
84 #if defined(__WIN32__) || defined(_WIN32) || defined(WIN32)
85 #define RELATIVE_LOCALE_DIR "/share/locale"
86 #elif defined(__APPLE__)
87 #define RELATIVE_LOCALE_DIR "/../Resources"
88 #endif
89
90
91 //-------------------------------------------------------------------------
92 // Singleton application instance stuff (Qt/X11 only atm.)
93 //
94
95 #ifdef CONFIG_XUNIQUE
96
97 #define QSAMPLER_XUNIQUE "qsamplerApplication"
98
99 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
100 #ifdef CONFIG_X11
101
102 #include <unistd.h> /* for gethostname() */
103
104 #include <X11/Xatom.h>
105 #include <X11/Xlib.h>
106
107 #endif // CONFIG_X11
108 #else
109 #include <QSharedMemory>
110 #include <QLocalServer>
111 #include <QLocalSocket>
112 #include <QHostInfo>
113 #endif
114
115 #endif // CONFIG_XUNIQUE
116
117
118 // Constructor.
119 qsamplerApplication::qsamplerApplication ( int& argc, char **argv )
120 : QApplication(argc, argv),
121 m_pQtTranslator(nullptr), m_pMyTranslator(nullptr), m_pWidget(nullptr)
122 {
123 #if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
124 QApplication::setApplicationName(QSAMPLER_TITLE);
125 QApplication::setApplicationDisplayName(QSAMPLER_TITLE);
126 // QSAMPLER_TITLE " - " + QObject::tr(QSAMPLER_SUBTITLE));
127 #if QT_VERSION >= QT_VERSION_CHECK(5, 7, 0)
128 QApplication::setDesktopFileName(
129 QString("org.rncbc.%1").arg(PACKAGE_TARNAME));
130 #endif
131 QString sVersion(CONFIG_BUILD_VERSION);
132 sVersion += '\n';
133 sVersion += QString("Qt: %1").arg(qVersion());
134 #if defined(QT_STATIC)
135 sVersion += "-static";
136 #endif
137 sVersion += '\n';
138 #ifdef CONFIG_LIBGIG
139 sVersion += QString("%1: %2")
140 .arg(gig::libraryName().c_str())
141 .arg(gig::libraryVersion().c_str());
142 sVersion += '\n';
143 #endif
144 sVersion += QString("%1: %2")
145 .arg(::lscp_client_package())
146 .arg(::lscp_client_version());
147 QApplication::setApplicationVersion(sVersion);
148 #endif
149 // Load translation support.
150 QLocale loc;
151 if (loc.language() != QLocale::C) {
152 // Try own Qt translation...
153 m_pQtTranslator = new QTranslator(this);
154 QString sLocName = "qt_" + loc.name();
155 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
156 QString sLocPath = QLibraryInfo::path(QLibraryInfo::TranslationsPath);
157 #else
158 QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
159 #endif
160 if (m_pQtTranslator->load(sLocName, sLocPath)) {
161 QApplication::installTranslator(m_pQtTranslator);
162 } else {
163 sLocPath = QApplication::applicationDirPath();
164 #ifdef RELATIVE_LOCALE_DIR
165 sLocPath.append(RELATIVE_LOCALE_DIR);
166 #else
167 sLocPath.remove(CONFIG_BINDIR);
168 sLocPath.append(CONFIG_DATADIR "/qsampler/translations");
169 #endif
170 if (m_pQtTranslator->load(sLocName, sLocPath)) {
171 QApplication::installTranslator(m_pQtTranslator);
172 } else {
173 delete m_pQtTranslator;
174 m_pQtTranslator = nullptr;
175 #ifdef CONFIG_DEBUG
176 qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
177 loc.name().toUtf8().constData(),
178 sLocPath.toUtf8().constData(),
179 sLocName.toUtf8().constData());
180 #endif
181 }
182 }
183 // Try own application translation...
184 m_pMyTranslator = new QTranslator(this);
185 sLocName = "qsampler_" + loc.name();
186 if (m_pMyTranslator->load(sLocName, sLocPath)) {
187 QApplication::installTranslator(m_pMyTranslator);
188 } else {
189 #ifdef RELATIVE_LOCALE_DIR
190 sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR;
191 #else
192 sLocPath = CONFIG_DATADIR "/qsampler/translations";
193 #endif
194 if (m_pMyTranslator->load(sLocName, sLocPath)) {
195 QApplication::installTranslator(m_pMyTranslator);
196 } else {
197 delete m_pMyTranslator;
198 m_pMyTranslator = nullptr;
199 #ifdef CONFIG_DEBUG
200 qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
201 loc.name().toUtf8().constData(),
202 sLocPath.toUtf8().constData(),
203 sLocName.toUtf8().constData());
204 #endif
205 }
206 }
207 }
208 #ifdef CONFIG_XUNIQUE
209 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
210 #ifdef CONFIG_X11
211 m_pDisplay = nullptr;
212 m_aUnique = 0;
213 m_wOwner = 0;
214 #endif // CONFIG_X11
215 #else
216 m_pMemory = nullptr;
217 m_pServer = nullptr;
218 #endif
219 #endif // CONFIG_XUNIQUE
220 }
221
222
223 // Destructor.
224 qsamplerApplication::~qsamplerApplication (void)
225 {
226 #ifdef CONFIG_XUNIQUE
227 #if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
228 if (m_pServer) {
229 m_pServer->close();
230 delete m_pServer;
231 m_pServer = nullptr;
232 }
233 if (m_pMemory) {
234 delete m_pMemory;
235 m_pMemory = nullptr;
236 }
237 #endif
238 #endif // CONFIG_XUNIQUE
239 if (m_pMyTranslator) delete m_pMyTranslator;
240 if (m_pQtTranslator) delete m_pQtTranslator;
241 }
242
243
244 // Main application widget accessors.
245 void qsamplerApplication::setMainWidget ( QWidget *pWidget )
246 {
247 m_pWidget = pWidget;
248 #ifdef CONFIG_XUNIQUE
249 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
250 #ifdef CONFIG_X11
251 m_wOwner = m_pWidget->winId();
252 if (m_pDisplay && m_wOwner) {
253 XGrabServer(m_pDisplay);
254 XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime);
255 XUngrabServer(m_pDisplay);
256 }
257 #endif // CONFIG_X11
258 #endif
259 #endif // CONFIG_XUNIQUE
260 }
261
262
263 // Check if another instance is running,
264 // and raise its proper main widget...
265 bool qsamplerApplication::setup (void)
266 {
267 #ifdef CONFIG_XUNIQUE
268 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
269 #ifdef CONFIG_X11
270 m_pDisplay = QX11Info::display();
271 if (m_pDisplay) {
272 QString sUnique = QSAMPLER_XUNIQUE;
273 char szHostName[255];
274 if (::gethostname(szHostName, sizeof(szHostName)) == 0) {
275 sUnique += '@';
276 sUnique += szHostName;
277 }
278 m_aUnique = XInternAtom(m_pDisplay, sUnique.toUtf8().constData(), false);
279 XGrabServer(m_pDisplay);
280 m_wOwner = XGetSelectionOwner(m_pDisplay, m_aUnique);
281 XUngrabServer(m_pDisplay);
282 if (m_wOwner != None) {
283 // First, notify any freedesktop.org WM
284 // that we're about to show the main widget...
285 Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay);
286 int iScreen = XScreenNumberOfScreen(pScreen);
287 XEvent ev;
288 memset(&ev, 0, sizeof(ev));
289 ev.xclient.type = ClientMessage;
290 ev.xclient.display = m_pDisplay;
291 ev.xclient.window = m_wOwner;
292 ev.xclient.message_type = XInternAtom(m_pDisplay, "_NET_ACTIVE_WINDOW", false);
293 ev.xclient.format = 32;
294 ev.xclient.data.l[0] = 0; // Source indication.
295 ev.xclient.data.l[1] = 0; // Timestamp.
296 ev.xclient.data.l[2] = 0; // Requestor's currently active window (none)
297 ev.xclient.data.l[3] = 0;
298 ev.xclient.data.l[4] = 0;
299 XSelectInput(m_pDisplay, m_wOwner, StructureNotifyMask);
300 XSendEvent(m_pDisplay, RootWindow(m_pDisplay, iScreen), false,
301 (SubstructureNotifyMask | SubstructureRedirectMask), &ev);
302 XSync(m_pDisplay, false);
303 XRaiseWindow(m_pDisplay, m_wOwner);
304 // And then, let it get caught on destination
305 // by QApplication::native/x11EventFilter...
306 const QByteArray value = QSAMPLER_XUNIQUE;
307 XChangeProperty(
308 m_pDisplay,
309 m_wOwner,
310 m_aUnique,
311 m_aUnique, 8,
312 PropModeReplace,
313 (unsigned char *) value.data(),
314 value.length());
315 // Done.
316 return true;
317 }
318 }
319 #endif // CONFIG_X11
320 return false;
321 #else
322 m_sUnique = QCoreApplication::applicationName();
323 m_sUnique += '@';
324 m_sUnique += QHostInfo::localHostName();
325 #ifdef Q_OS_UNIX
326 m_pMemory = new QSharedMemory(m_sUnique);
327 m_pMemory->attach();
328 delete m_pMemory;
329 #endif
330 m_pMemory = new QSharedMemory(m_sUnique);
331 bool bServer = false;
332 const qint64 pid = QCoreApplication::applicationPid();
333 struct Data { qint64 pid; };
334 if (m_pMemory->create(sizeof(Data))) {
335 m_pMemory->lock();
336 Data *pData = static_cast<Data *> (m_pMemory->data());
337 if (pData) {
338 pData->pid = pid;
339 bServer = true;
340 }
341 m_pMemory->unlock();
342 }
343 else
344 if (m_pMemory->attach()) {
345 m_pMemory->lock(); // maybe not necessary?
346 Data *pData = static_cast<Data *> (m_pMemory->data());
347 if (pData)
348 bServer = (pData->pid == pid);
349 m_pMemory->unlock();
350 }
351 if (bServer) {
352 QLocalServer::removeServer(m_sUnique);
353 m_pServer = new QLocalServer();
354 m_pServer->setSocketOptions(QLocalServer::UserAccessOption);
355 m_pServer->listen(m_sUnique);
356 QObject::connect(m_pServer,
357 SIGNAL(newConnection()),
358 SLOT(newConnectionSlot()));
359 } else {
360 QLocalSocket socket;
361 socket.connectToServer(m_sUnique);
362 if (socket.state() == QLocalSocket::ConnectingState)
363 socket.waitForConnected(200);
364 if (socket.state() == QLocalSocket::ConnectedState) {
365 socket.write(QCoreApplication::arguments().join(' ').toUtf8());
366 socket.flush();
367 socket.waitForBytesWritten(200);
368 }
369 }
370 return !bServer;
371 #endif
372 #else
373 return false;
374 #endif // !CONFIG_XUNIQUE
375 }
376
377
378 #ifdef CONFIG_XUNIQUE
379 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
380 #ifdef CONFIG_X11
381
382 void qsamplerApplication::x11PropertyNotify ( Window w )
383 {
384 if (m_pDisplay && m_pWidget && m_wOwner == w) {
385 // Always check whether our property-flag is still around...
386 Atom aType;
387 int iFormat = 0;
388 unsigned long iItems = 0;
389 unsigned long iAfter = 0;
390 unsigned char *pData = 0;
391 if (XGetWindowProperty(
392 m_pDisplay,
393 m_wOwner,
394 m_aUnique,
395 0, 1024,
396 false,
397 m_aUnique,
398 &aType,
399 &iFormat,
400 &iItems,
401 &iAfter,
402 &pData) == Success
403 && aType == m_aUnique && iItems > 0 && iAfter == 0) {
404 // Avoid repeating it-self...
405 XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique);
406 // Just make it always shows up fine...
407 m_pWidget->show();
408 m_pWidget->raise();
409 m_pWidget->activateWindow();
410 }
411 // Free any left-overs...
412 if (iItems > 0 && pData)
413 XFree(pData);
414 }
415 }
416
417
418 bool qsamplerApplication::x11EventFilter ( XEvent *pEv )
419 {
420 if (pEv->type == PropertyNotify
421 && pEv->xproperty.state == PropertyNewValue)
422 x11PropertyNotify(pEv->xproperty.window);
423 return QApplication::x11EventFilter(pEv);
424 }
425
426 #endif // CONFIG_X11
427 #else
428
429 // Local server conection slot.
430 void qsamplerApplication::newConnectionSlot (void)
431 {
432 QLocalSocket *pSocket = m_pServer->nextPendingConnection();
433 QObject::connect(pSocket,
434 SIGNAL(readyRead()),
435 SLOT(readyReadSlot()));
436 }
437
438 // Local server data-ready slot.
439 void qsamplerApplication::readyReadSlot (void)
440 {
441 QLocalSocket *pSocket = qobject_cast<QLocalSocket *> (sender());
442 if (pSocket) {
443 const qint64 nread = pSocket->bytesAvailable();
444 if (nread > 0) {
445 const QByteArray data = pSocket->read(nread);
446 // Just make it always shows up fine...
447 m_pWidget->hide();
448 m_pWidget->show();
449 m_pWidget->raise();
450 m_pWidget->activateWindow();
451 }
452 }
453 }
454
455 #endif
456 #endif // CONFIG_XUNIQUE
457
458
459 //-------------------------------------------------------------------------
460 // stacktrace - Signal crash handler.
461 //
462
463 #ifdef CONFIG_STACKTRACE
464 #if defined(__GNUC__) && defined(Q_OS_LINUX)
465
466 #include <stdio.h>
467 #include <errno.h>
468 #include <signal.h>
469 #include <unistd.h>
470 #include <sys/wait.h>
471
472 void stacktrace ( int signo )
473 {
474 pid_t pid;
475 int rc;
476 int status = 0;
477 char cmd[80];
478
479 // Reinstall default handler; prevent race conditions...
480 ::signal(signo, SIG_DFL);
481
482 static const char *shell = "/bin/sh";
483 static const char *format = "gdb -q --batch --pid=%d"
484 " --eval-command='thread apply all bt'";
485
486 snprintf(cmd, sizeof(cmd), format, (int) getpid());
487
488 pid = fork();
489
490 // Fork failure!
491 if (pid < 0)
492 return;
493
494 // Fork child...
495 if (pid == 0) {
496 execl(shell, shell, "-c", cmd, nullptr);
497 _exit(1);
498 return;
499 }
500
501 // Parent here: wait for child to terminate...
502 do { rc = waitpid(pid, &status, 0); }
503 while ((rc < 0) && (errno == EINTR));
504
505 // Dispatch any logging, if any...
506 QApplication::processEvents(QEventLoop::AllEvents, 3000);
507
508 // Make sure everyone terminates...
509 kill(pid, SIGTERM);
510 _exit(1);
511 }
512
513 #endif
514 #endif
515
516
517 //-------------------------------------------------------------------------
518 // main - The main program trunk.
519 //
520
521 int main ( int argc, char **argv )
522 {
523 Q_INIT_RESOURCE(qsampler);
524 #ifdef CONFIG_STACKTRACE
525 #if defined(__GNUC__) && defined(Q_OS_LINUX)
526 ::signal(SIGILL, stacktrace);
527 ::signal(SIGFPE, stacktrace);
528 ::signal(SIGSEGV, stacktrace);
529 ::signal(SIGABRT, stacktrace);
530 ::signal(SIGBUS, stacktrace);
531 #endif
532 #endif
533 #if defined(Q_OS_LINUX) && !defined(CONFIG_WAYLAND)
534 ::setenv("QT_QPA_PLATFORM", "xcb", 0);
535 #endif
536 #if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
537 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
538 QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
539 #endif
540 #endif
541 qsamplerApplication app(argc, argv);
542
543 #if defined(__APPLE__) // Toshi Nagata 20080105
544 {
545 // Set the plugin path to @exetutable_path/../plugins
546 QDir dir(QApplication::applicationDirPath());
547 dir.cdUp(); // "Contents" directory
548 QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins"));
549
550 // Set the PATH environment variable to include @executable_path/../../..
551 dir.cdUp();
552 dir.cdUp();
553 QString path(getenv("PATH"));
554 path = dir.absolutePath() + ":" + path;
555 setenv("PATH", path.toUtf8().constData(), 1);
556 }
557 #endif
558
559 // Construct default settings; override with command line arguments.
560 QSampler::Options options;
561 if (!options.parse_args(app.arguments())) {
562 app.quit();
563 return 1;
564 }
565
566 // Have another instance running?
567 if (app.setup()) {
568 app.quit();
569 return 2;
570 }
571
572 // Special custom styles...
573 if (QDir(CONFIG_PLUGINSDIR).exists())
574 app.addLibraryPath(CONFIG_PLUGINSDIR);
575 if (!options.sCustomStyleTheme.isEmpty())
576 app.setStyle(QStyleFactory::create(options.sCustomStyleTheme));
577
578 // Custom color theme (eg. "KXStudio")...
579 QPalette pal(app.palette());
580 if (QSampler::PaletteForm::namedPalette(
581 &options.settings(), options.sCustomColorTheme, pal))
582 app.setPalette(pal);
583
584 // Set default base font...
585 if (options.iBaseFontSize > 0)
586 app.setFont(QFont(app.font().family(), options.iBaseFontSize));
587
588 // Construct, setup and show the main form.
589 QSampler::MainForm w;
590 w.setup(&options);
591 w.show();
592
593 // Settle this one as application main widget...
594 app.setMainWidget(&w);
595
596 // Register the quit signal/slot.
597 // app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
598
599 return app.exec();
600 }
601
602
603 // end of qsampler.cpp
604

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