/[svn]/qsampler/trunk/src/qsampler.cpp
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Revision 2998 - (hide annotations) (download)
Mon Sep 26 09:37:11 2016 UTC (4 years ago) by capela
File size: 13250 byte(s)
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1 capela 2074 // qsampler.cpp
2     //
3     /****************************************************************************
4 capela 2987 Copyright (C) 2004-2016, rncbc aka Rui Nuno Capela. All rights reserved.
5 capela 2074 Copyright (C) 2007, 2008 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 "qsamplerAbout.h"
24     #include "qsamplerOptions.h"
25     #include "qsamplerMainForm.h"
26    
27     #include <QApplication>
28     #include <QLibraryInfo>
29     #include <QTranslator>
30     #include <QLocale>
31 capela 2459
32 capela 2074 #if defined(__APPLE__) // Toshi Nagata 20080105
33     #include <QDir>
34     #endif
35    
36 capela 2998 #ifndef CONFIG_PREFIX
37     #define CONFIG_PREFIX "/usr/local"
38     #endif
39    
40     #ifndef CONFIG_DATADIR
41     #define CONFIG_DATADIR CONFIG_PREFIX "/share"
42     #endif
43    
44 persson 2210 #if WIN32
45     #define RELATIVE_LOCALE_DIR "/share/locale"
46     #elif defined(__APPLE__)
47     #define RELATIVE_LOCALE_DIR "/../Resources"
48     #endif
49 capela 2074
50 persson 2210
51 capela 2074 //-------------------------------------------------------------------------
52     // Singleton application instance stuff (Qt/X11 only atm.)
53     //
54    
55 capela 2839 #if QT_VERSION < 0x050000
56 capela 2074 #if defined(Q_WS_X11)
57 capela 2839 #define CONFIG_X11
58     #endif
59     #else
60     #if defined(QT_X11EXTRAS_LIB)
61     #define CONFIG_X11
62     #endif
63     #endif
64 capela 2074
65 capela 2839
66     #ifdef CONFIG_X11
67     #ifdef CONFIG_XUNIQUE
68    
69 capela 2074 #include <QX11Info>
70    
71     #include <X11/Xatom.h>
72     #include <X11/Xlib.h>
73    
74 capela 2839 #define QSAMPLER_XUNIQUE "qsamplerApplication"
75 capela 2074
76 capela 2839 #if QT_VERSION >= 0x050100
77    
78     #include <xcb/xcb.h>
79     #include <xcb/xproto.h>
80    
81     #include <QAbstractNativeEventFilter>
82    
83     class qsamplerApplication;
84    
85     class qsamplerXcbEventFilter : public QAbstractNativeEventFilter
86     {
87     public:
88    
89     // Constructor.
90     qsamplerXcbEventFilter(qsamplerApplication *pApp)
91     : QAbstractNativeEventFilter(), m_pApp(pApp) {}
92    
93     // XCB event filter (virtual processor).
94     bool nativeEventFilter(const QByteArray& eventType, void *message, long *);
95    
96     private:
97    
98     // Instance variable.
99     qsamplerApplication *m_pApp;
100     };
101    
102 capela 2074 #endif
103    
104 capela 2839 #endif // CONFIG_XUNIQUE
105     #endif // CONFIG_X11
106    
107    
108 capela 2074 class qsamplerApplication : public QApplication
109     {
110     public:
111    
112     // Constructor.
113     qsamplerApplication(int& argc, char **argv) : QApplication(argc, argv),
114 capela 2839 m_pQtTranslator(0), m_pMyTranslator(0), m_pWidget(0)
115 capela 2074 {
116     // Load translation support.
117     QLocale loc;
118     if (loc.language() != QLocale::C) {
119     // Try own Qt translation...
120     m_pQtTranslator = new QTranslator(this);
121     QString sLocName = "qt_" + loc.name();
122     QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
123     if (m_pQtTranslator->load(sLocName, sLocPath)) {
124     QApplication::installTranslator(m_pQtTranslator);
125     } else {
126 capela 2631 #ifdef RELATIVE_LOCALE_DIR
127 persson 2210 sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR;
128 persson 2144 if (m_pQtTranslator->load(sLocName, sLocPath)) {
129     QApplication::installTranslator(m_pQtTranslator);
130     } else {
131 capela 2631 #endif
132 capela 2074 delete m_pQtTranslator;
133     m_pQtTranslator = 0;
134 capela 2631 #ifdef CONFIG_DEBUG
135 capela 2074 qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
136     loc.name().toUtf8().constData(),
137     sLocPath.toUtf8().constData(),
138     sLocName.toUtf8().constData());
139 capela 2631 #endif
140     #ifdef RELATIVE_LOCALE_DIR
141 persson 2144 }
142 capela 2631 #endif
143 capela 2074 }
144     // Try own application translation...
145     m_pMyTranslator = new QTranslator(this);
146     sLocName = "qsampler_" + loc.name();
147     if (m_pMyTranslator->load(sLocName, sLocPath)) {
148     QApplication::installTranslator(m_pMyTranslator);
149     } else {
150 capela 2631 #ifdef RELATIVE_LOCALE_DIR
151 persson 2210 sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR;
152 capela 2631 #else
153     sLocPath = CONFIG_DATADIR "/qsampler/translations";
154     #endif
155 capela 2074 if (m_pMyTranslator->load(sLocName, sLocPath)) {
156     QApplication::installTranslator(m_pMyTranslator);
157     } else {
158     delete m_pMyTranslator;
159     m_pMyTranslator = 0;
160 capela 2631 #ifdef CONFIG_DEBUG
161 capela 2074 qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
162     loc.name().toUtf8().constData(),
163     sLocPath.toUtf8().constData(),
164     sLocName.toUtf8().constData());
165 capela 2631 #endif
166 capela 2074 }
167     }
168     }
169 capela 2839 #ifdef CONFIG_X11
170     #ifdef CONFIG_XUNIQUE
171     // Instance uniqueness initialization...
172 capela 2074 m_pDisplay = QX11Info::display();
173     m_aUnique = XInternAtom(m_pDisplay, QSAMPLER_XUNIQUE, false);
174     XGrabServer(m_pDisplay);
175     m_wOwner = XGetSelectionOwner(m_pDisplay, m_aUnique);
176     XUngrabServer(m_pDisplay);
177 capela 2839 #if QT_VERSION >= 0x050100
178     m_pXcbEventFilter = new qsamplerXcbEventFilter(this);
179     installNativeEventFilter(m_pXcbEventFilter);
180 capela 2074 #endif
181 capela 2839 #endif // CONFIG_XUNIQUE
182     #endif // CONFIG_X11
183 capela 2074 }
184    
185     // Destructor.
186     ~qsamplerApplication()
187     {
188 capela 2839 #ifdef CONFIG_X11
189     #ifdef CONFIG_XUNIQUE
190     #if QT_VERSION >= 0x050100
191     removeNativeEventFilter(m_pXcbEventFilter);
192     delete m_pXcbEventFilter;
193     #endif
194     #endif // CONFIG_XUNIQUE
195     #endif // CONFIG_X11
196 capela 2074 if (m_pMyTranslator) delete m_pMyTranslator;
197     if (m_pQtTranslator) delete m_pQtTranslator;
198     }
199    
200     // Main application widget accessors.
201     void setMainWidget(QWidget *pWidget)
202     {
203     m_pWidget = pWidget;
204 capela 2839 #ifdef CONFIG_X11
205     #ifdef CONFIG_XUNIQUE
206 capela 2074 XGrabServer(m_pDisplay);
207     m_wOwner = m_pWidget->winId();
208     XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime);
209     XUngrabServer(m_pDisplay);
210 capela 2839 #endif // CONFIG_XUNIQUE
211     #endif // CONFIG_X11
212 capela 2074 }
213    
214     QWidget *mainWidget() const { return m_pWidget; }
215    
216     // Check if another instance is running,
217     // and raise its proper main widget...
218     bool setup()
219     {
220 capela 2839 #ifdef CONFIG_X11
221     #ifdef CONFIG_XUNIQUE
222 capela 2074 if (m_wOwner != None) {
223     // First, notify any freedesktop.org WM
224     // that we're about to show the main widget...
225     Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay);
226     int iScreen = XScreenNumberOfScreen(pScreen);
227     XEvent ev;
228     memset(&ev, 0, sizeof(ev));
229     ev.xclient.type = ClientMessage;
230     ev.xclient.display = m_pDisplay;
231     ev.xclient.window = m_wOwner;
232     ev.xclient.message_type = XInternAtom(m_pDisplay, "_NET_ACTIVE_WINDOW", false);
233     ev.xclient.format = 32;
234     ev.xclient.data.l[0] = 0; // Source indication.
235     ev.xclient.data.l[1] = 0; // Timestamp.
236     ev.xclient.data.l[2] = 0; // Requestor's currently active window (none)
237     ev.xclient.data.l[3] = 0;
238     ev.xclient.data.l[4] = 0;
239     XSelectInput(m_pDisplay, m_wOwner, StructureNotifyMask);
240     XSendEvent(m_pDisplay, RootWindow(m_pDisplay, iScreen), false,
241     (SubstructureNotifyMask | SubstructureRedirectMask), &ev);
242     XSync(m_pDisplay, false);
243     XRaiseWindow(m_pDisplay, m_wOwner);
244     // And then, let it get caught on destination
245 capela 2839 // by QApplication::native/x11EventFilter...
246     const QByteArray value = QSAMPLER_XUNIQUE;
247 capela 2074 XChangeProperty(
248     m_pDisplay,
249     m_wOwner,
250     m_aUnique,
251     m_aUnique, 8,
252     PropModeReplace,
253     (unsigned char *) value.data(),
254     value.length());
255     // Done.
256     return true;
257     }
258 capela 2839 #endif // CONFIG_XUNIQUE
259     #endif // CONFIG_X11
260 capela 2074 return false;
261     }
262    
263 capela 2839 #ifdef CONFIG_X11
264     #ifdef CONFIG_XUNIQUE
265     void x11PropertyNotify(Window w)
266 capela 2074 {
267 capela 2839 if (m_pWidget && m_wOwner == w) {
268 capela 2074 // Always check whether our property-flag is still around...
269     Atom aType;
270     int iFormat = 0;
271     unsigned long iItems = 0;
272     unsigned long iAfter = 0;
273     unsigned char *pData = 0;
274     if (XGetWindowProperty(
275     m_pDisplay,
276     m_wOwner,
277     m_aUnique,
278     0, 1024,
279     false,
280     m_aUnique,
281     &aType,
282     &iFormat,
283     &iItems,
284     &iAfter,
285     &pData) == Success
286     && aType == m_aUnique && iItems > 0 && iAfter == 0) {
287     // Avoid repeating it-self...
288     XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique);
289     // Just make it always shows up fine...
290     m_pWidget->show();
291     m_pWidget->raise();
292     m_pWidget->activateWindow();
293     }
294     // Free any left-overs...
295     if (iItems > 0 && pData)
296     XFree(pData);
297     }
298 capela 2839 }
299     #if QT_VERSION < 0x050000
300     bool x11EventFilter(XEvent *pEv)
301     {
302     if (pEv->type == PropertyNotify
303     && pEv->xproperty.state == PropertyNewValue)
304     x11PropertyNotify(pEv->xproperty.window);
305 capela 2074 return QApplication::x11EventFilter(pEv);
306     }
307     #endif
308 capela 2839 #endif // CONFIG_XUNIQUE
309     #endif // CONFIG_X11
310 capela 2074
311     private:
312    
313     // Translation support.
314     QTranslator *m_pQtTranslator;
315     QTranslator *m_pMyTranslator;
316    
317     // Instance variables.
318     QWidget *m_pWidget;
319    
320 capela 2839 #ifdef CONFIG_X11
321     #ifdef CONFIG_XUNIQUE
322 capela 2074 Display *m_pDisplay;
323     Atom m_aUnique;
324     Window m_wOwner;
325 capela 2839 #if QT_VERSION >= 0x050100
326     qsamplerXcbEventFilter *m_pXcbEventFilter;
327 capela 2074 #endif
328 capela 2839 #endif // CONFIG_XUNIQUE
329     #endif // CONFIG_X11
330 capela 2074 };
331    
332    
333 capela 2839 #ifdef CONFIG_X11
334     #ifdef CONFIG_XUNIQUE
335     #if QT_VERSION >= 0x050100
336     // XCB Event filter (virtual processor).
337     bool qsamplerXcbEventFilter::nativeEventFilter (
338     const QByteArray& eventType, void *message, long * )
339     {
340     if (eventType == "xcb_generic_event_t") {
341     xcb_property_notify_event_t *pEv
342     = static_cast<xcb_property_notify_event_t *> (message);
343     if ((pEv->response_type & ~0x80) == XCB_PROPERTY_NOTIFY
344     && pEv->state == XCB_PROPERTY_NEW_VALUE)
345     m_pApp->x11PropertyNotify(pEv->window);
346     }
347     return false;
348     }
349     #endif
350     #endif // CONFIG_XUNIQUE
351     #endif // CONFIG_X11
352    
353    
354 capela 2074 //-------------------------------------------------------------------------
355     // stacktrace - Signal crash handler.
356     //
357    
358     #ifdef CONFIG_STACKTRACE
359     #if defined(__GNUC__) && defined(Q_OS_LINUX)
360    
361     #include <stdio.h>
362     #include <errno.h>
363     #include <signal.h>
364 capela 2341 #include <unistd.h>
365 capela 2074 #include <sys/wait.h>
366    
367     void stacktrace ( int signo )
368     {
369     pid_t pid;
370     int rc;
371     int status = 0;
372     char cmd[80];
373    
374     // Reinstall default handler; prevent race conditions...
375     signal(signo, SIG_DFL);
376    
377     static const char *shell = "/bin/sh";
378 capela 2181 static const char *format = "gdb -q --batch --pid=%d"
379     " --eval-command='thread apply all bt'";
380 capela 2074
381     snprintf(cmd, sizeof(cmd), format, (int) getpid());
382    
383     pid = fork();
384    
385     // Fork failure!
386     if (pid < 0)
387     return;
388    
389     // Fork child...
390     if (pid == 0) {
391     execl(shell, shell, "-c", cmd, NULL);
392     _exit(1);
393     return;
394     }
395    
396     // Parent here: wait for child to terminate...
397     do { rc = waitpid(pid, &status, 0); }
398     while ((rc < 0) && (errno == EINTR));
399    
400     // Dispatch any logging, if any...
401     QApplication::processEvents(QEventLoop::AllEvents, 3000);
402    
403     // Make sure everyone terminates...
404     kill(pid, SIGTERM);
405     _exit(1);
406     }
407    
408     #endif
409     #endif
410    
411    
412     //-------------------------------------------------------------------------
413     // main - The main program trunk.
414     //
415    
416     int main ( int argc, char **argv )
417     {
418     Q_INIT_RESOURCE(qsampler);
419     #ifdef CONFIG_STACKTRACE
420     #if defined(__GNUC__) && defined(Q_OS_LINUX)
421     signal(SIGILL, stacktrace);
422     signal(SIGFPE, stacktrace);
423     signal(SIGSEGV, stacktrace);
424     signal(SIGABRT, stacktrace);
425     signal(SIGBUS, stacktrace);
426     #endif
427     #endif
428     qsamplerApplication app(argc, argv);
429    
430     #if defined(__APPLE__) // Toshi Nagata 20080105
431     {
432     // Set the plugin path to @exetutable_path/../plugins
433     QDir dir(QApplication::applicationDirPath());
434     dir.cdUp(); // "Contents" directory
435     QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins"));
436    
437     // Set the PATH environment variable to include @executable_path/../../..
438     dir.cdUp();
439     dir.cdUp();
440     QString path(getenv("PATH"));
441     path = dir.absolutePath() + ":" + path;
442     setenv("PATH", path.toUtf8().constData(), 1);
443     }
444     #endif
445    
446     // Construct default settings; override with command line arguments.
447     QSampler::Options options;
448     if (!options.parse_args(app.arguments())) {
449     app.quit();
450     return 1;
451     }
452    
453     // Have another instance running?
454     if (app.setup()) {
455     app.quit();
456     return 2;
457     }
458    
459     // Dark themes grayed/disabled color group fix...
460     QPalette pal(app.palette());
461     if (pal.base().color().value() < 0x7f) {
462 capela 2415 #if QT_VERSION >= 0x050000
463     const QColor& color = pal.window().color();
464     const int iGroups = int(QPalette::Active | QPalette::Inactive) + 1;
465     for (int i = 0; i < iGroups; ++i) {
466     const QPalette::ColorGroup group = QPalette::ColorGroup(i);
467     pal.setBrush(group, QPalette::Light, color.lighter(150));
468     pal.setBrush(group, QPalette::Midlight, color.lighter(120));
469     pal.setBrush(group, QPalette::Dark, color.darker(150));
470     pal.setBrush(group, QPalette::Mid, color.darker(120));
471     pal.setBrush(group, QPalette::Shadow, color.darker(200));
472     }
473     // pal.setColor(QPalette::Disabled, QPalette::ButtonText, pal.mid().color());
474     #endif
475 capela 2074 pal.setColorGroup(QPalette::Disabled,
476     pal.windowText().color().darker(),
477     pal.button(),
478     pal.light(),
479     pal.dark(),
480     pal.mid(),
481     pal.text().color().darker(),
482     pal.text().color().lighter(),
483     pal.base(),
484     pal.window());
485     app.setPalette(pal);
486     }
487    
488     // Set default base font...
489     if (options.iBaseFontSize > 0)
490 capela 2677 app.setFont(QFont(app.font().family(), options.iBaseFontSize));
491 capela 2074
492     // Construct, setup and show the main form.
493     QSampler::MainForm w;
494     w.setup(&options);
495     w.show();
496    
497     // Settle this one as application main widget...
498     app.setMainWidget(&w);
499    
500     // Register the quit signal/slot.
501     // app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
502    
503     return app.exec();
504     }
505    
506    
507     // end of qsampler.cpp

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