trunk/src/main.cpp

// main.cpp
//
/****************************************************************************
   Copyright (C) 2004-2008, rncbc aka Rui Nuno Capela. All rights reserved.
   Copyright (C) 2007, 2008 Christian Schoenebeck

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*****************************************************************************/

#include "qsamplerAbout.h"
#include "qsamplerOptions.h"
#include "qsamplerMainForm.h"

#include <QApplication>
#include <QLibraryInfo>
#include <QTranslator>
#include <QLocale>
#if defined(__APPLE__)  // Toshi Nagata 20080105
#include <QDir>
#endif

#if defined(Q_WS_X11)

//-------------------------------------------------------------------------
// Single application instance stuff (Qt/X11 only atm.)
//

#include <QX11Info>

#include <X11/Xatom.h>
#include <X11/Xlib.h>

#define QSAMPLER_XUNIQUE "qsamplerMainForm_xunique"

#endif

class qsamplerApplication : public QApplication
{
public:

        // Constructor.
        qsamplerApplication(int& argc, char **argv) : QApplication(argc, argv),
                m_pQtTranslator(0), m_pMyTranslator(0), m_pWidget(0)    
        {
                // Load translation support.
                QLocale loc;
                if (loc.language() != QLocale::C) {
                        // Try own Qt translation...
                        m_pQtTranslator = new QTranslator(this);
                        QString sLocName = "qt_" + loc.name();
                        QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
                        if (m_pQtTranslator->load(sLocName, sLocPath)) {
                                QApplication::installTranslator(m_pQtTranslator);
                        } else {
                                delete m_pQtTranslator;
                                m_pQtTranslator = 0;
                #ifdef CONFIG_DEBUG
                                qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
                                        loc.name().toUtf8().constData(),
                                        sLocPath.toUtf8().constData(),
                                        sLocName.toUtf8().constData());
                #endif
                        }
                        // Try own application translation...
                        m_pMyTranslator = new QTranslator(this);
                        sLocName = "qsampler_" + loc.name();
                        if (m_pMyTranslator->load(sLocName, sLocPath)) {
                                QApplication::installTranslator(m_pMyTranslator);
                        } else {
                                sLocPath = CONFIG_PREFIX "/share/locale";
                                if (m_pMyTranslator->load(sLocName, sLocPath)) {
                                        QApplication::installTranslator(m_pMyTranslator);
                                } else {
                                        delete m_pMyTranslator;
                                        m_pMyTranslator = 0;
                #ifdef CONFIG_DEBUG
                                        qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
                                                loc.name().toUtf8().constData(),
                                                sLocPath.toUtf8().constData(),
                                                sLocName.toUtf8().constData());
                #endif
                                }
                        }
                }
        #if defined(Q_WS_X11)
                m_pDisplay = QX11Info::display();
                m_aUnique  = XInternAtom(m_pDisplay, QSAMPLER_XUNIQUE, false);
                XGrabServer(m_pDisplay);
                m_wOwner = XGetSelectionOwner(m_pDisplay, m_aUnique);
                XUngrabServer(m_pDisplay);
        #endif
        }

        // Destructor.
        ~qsamplerApplication()
        {
                if (m_pMyTranslator) delete m_pMyTranslator;
                if (m_pQtTranslator) delete m_pQtTranslator;
        }

        // Main application widget accessors.
        void setMainWidget(QWidget *pWidget)
        {
                m_pWidget = pWidget;
        #if defined(Q_WS_X11)
                XGrabServer(m_pDisplay);
                m_wOwner = m_pWidget->winId();
                XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime);
                XUngrabServer(m_pDisplay);
        #endif
        }

        QWidget *mainWidget() const { return m_pWidget; }

        // Check if another instance is running,
    // and raise its proper main widget...
        bool setup()
        {
        #if defined(Q_WS_X11)
                if (m_wOwner != None) {
                        // First, notify any freedesktop.org WM
                        // that we're about to show the main widget...
                        Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay);
                        int iScreen = XScreenNumberOfScreen(pScreen);
                        XEvent ev;
                        memset(&ev, 0, sizeof(ev));
                        ev.xclient.type = ClientMessage;
                        ev.xclient.display = m_pDisplay;
                        ev.xclient.window = m_wOwner;
                        ev.xclient.message_type = XInternAtom(m_pDisplay, "_NET_ACTIVE_WINDOW", false);
                        ev.xclient.format = 32;
                        ev.xclient.data.l[0] = 0; // Source indication.
                        ev.xclient.data.l[1] = 0; // Timestamp.
                        ev.xclient.data.l[2] = 0; // Requestor's currently active window (none)
                        ev.xclient.data.l[3] = 0;
                        ev.xclient.data.l[4] = 0;
                        XSelectInput(m_pDisplay, m_wOwner, StructureNotifyMask);
                        XSendEvent(m_pDisplay, RootWindow(m_pDisplay, iScreen), false,
                                (SubstructureNotifyMask | SubstructureRedirectMask), &ev);
                        XSync(m_pDisplay, false);
                        XRaiseWindow(m_pDisplay, m_wOwner);
                        // And then, let it get caught on destination
                        // by QApplication::x11EventFilter...
                        QByteArray value = QSAMPLER_XUNIQUE;
                        XChangeProperty(
                                m_pDisplay,
                                m_wOwner,
                                m_aUnique,
                                m_aUnique, 8,
                                PropModeReplace,
                                (unsigned char *) value.data(),
                                value.length());
                        // Done.
                        return true;
                }
        #endif
                return false;
        }

#if defined(Q_WS_X11)
        bool x11EventFilter(XEvent *pEv)
        {
                if (m_pWidget && m_wOwner != None
                        && pEv->type == PropertyNotify
                        && pEv->xproperty.window == m_wOwner
                        && pEv->xproperty.state == PropertyNewValue) {
                        // Always check whether our property-flag is still around...
                        Atom aType;
                        int iFormat = 0;
                        unsigned long iItems = 0;
                        unsigned long iAfter = 0;
                        unsigned char *pData = 0;
                        if (XGetWindowProperty(
                                        m_pDisplay,
                                        m_wOwner,
                                        m_aUnique,
                                        0, 1024,
                                        false,
                                        m_aUnique,
                                        &aType,
                                        &iFormat,
                                        &iItems,
                                        &iAfter,
                                        &pData) == Success
                                && aType == m_aUnique && iItems > 0 && iAfter == 0) {
                                // Avoid repeating it-self...
                                XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique);
                                // Just make it always shows up fine...
                                m_pWidget->show();
                                m_pWidget->raise();
                                m_pWidget->activateWindow();
                        }
                        // Free any left-overs...
                        if (iItems > 0 && pData)
                                XFree(pData);
                }
                return QApplication::x11EventFilter(pEv);
        }
#endif
        
private:

        // Translation support.
        QTranslator *m_pQtTranslator;
        QTranslator *m_pMyTranslator;

        // Instance variables.
        QWidget *m_pWidget;

#if defined(Q_WS_X11)
        Display *m_pDisplay;
        Atom     m_aUnique;
        Window   m_wOwner;
#endif
};


//-------------------------------------------------------------------------
// main - The main program trunk.
//

int main ( int argc, char **argv )
{
        Q_INIT_RESOURCE(qsampler);

        qsamplerApplication app(argc, argv);

        #if defined(__APPLE__)  //  Toshi Nagata 20080105
        {
                //  Set the plugin path to @exetutable_path/../plugins
                QDir dir(QApplication::applicationDirPath());
                dir.cdUp();  // "Contents" directory
                QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins"));

                //  Set the PATH environment variable to include @executable_path/../../..
                dir.cdUp();
                dir.cdUp();
                QString path(getenv("PATH"));
                path = dir.absolutePath() + ":" + path;
                setenv("PATH", path.toUtf8().constData(), 1);
        }
        #endif

        // Construct default settings; override with command line arguments.
        QSampler::Options options;
        if (!options.parse_args(app.argc(), app.argv())) {
                app.quit();
                return 1;
        }

        // Have another instance running?
        if (app.setup()) {
                app.quit();
                return 2;
        }

        // Construct, setup and show the main form.
        QSampler::MainForm w;
        w.setup(&options);
        w.show();

        // Settle this one as application main widget...
        app.setMainWidget(&w);

        // Register the quit signal/slot.
        // app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));

        return app.exec();
}


// end of main.cpp
1	capela	73	// main.cpp
2			//
3			/****************************************************************************
4	capela	1740	Copyright (C) 2004-2008, rncbc aka Rui Nuno Capela. All rights reserved.
5	schoenebeck	1667	Copyright (C) 2007, 2008 Christian Schoenebeck
6	capela	73
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	capela	920	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	capela	73
21			*****************************************************************************/
22
23			#include "qsamplerAbout.h"
24			#include "qsamplerOptions.h"
25			#include "qsamplerMainForm.h"
26
27	capela	1473	#include <QApplication>
28	capela	1740	#include <QLibraryInfo>
29	capela	1473	#include <QTranslator>
30			#include <QLocale>
31	nagata	1643	#if defined(__APPLE__) // Toshi Nagata 20080105
32			#include <QDir>
33			#endif
34	capela	1473
35	capela	1740	#if defined(Q_WS_X11)
36
37	capela	73	//-------------------------------------------------------------------------
38	capela	1740	// Single application instance stuff (Qt/X11 only atm.)
39	capela	73	//
40
41	capela	1740	#include <QX11Info>
42
43			#include <X11/Xatom.h>
44			#include <X11/Xlib.h>
45
46			#define QSAMPLER_XUNIQUE "qsamplerMainForm_xunique"
47
48			#endif
49
50			class qsamplerApplication : public QApplication
51	capela	73	{
52	capela	1740	public:
53	schoenebeck	1667
54	capela	1740	// Constructor.
55			qsamplerApplication(int& argc, char **argv) : QApplication(argc, argv),
56			m_pQtTranslator(0), m_pMyTranslator(0), m_pWidget(0)
57			{
58			// Load translation support.
59			QLocale loc;
60			if (loc.language() != QLocale::C) {
61			// Try own Qt translation...
62			m_pQtTranslator = new QTranslator(this);
63			QString sLocName = "qt_" + loc.name();
64			QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
65			if (m_pQtTranslator->load(sLocName, sLocPath)) {
66			QApplication::installTranslator(m_pQtTranslator);
67			} else {
68			delete m_pQtTranslator;
69			m_pQtTranslator = 0;
70			#ifdef CONFIG_DEBUG
71			qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
72			loc.name().toUtf8().constData(),
73	capela	1473	sLocPath.toUtf8().constData(),
74			sLocName.toUtf8().constData());
75	capela	1740	#endif
76			}
77			// Try own application translation...
78			m_pMyTranslator = new QTranslator(this);
79			sLocName = "qsampler_" + loc.name();
80			if (m_pMyTranslator->load(sLocName, sLocPath)) {
81			QApplication::installTranslator(m_pMyTranslator);
82			} else {
83			sLocPath = CONFIG_PREFIX "/share/locale";
84			if (m_pMyTranslator->load(sLocName, sLocPath)) {
85			QApplication::installTranslator(m_pMyTranslator);
86			} else {
87			delete m_pMyTranslator;
88			m_pMyTranslator = 0;
89			#ifdef CONFIG_DEBUG
90			qWarning("Warning: no translation found for '%s' locale: %s/%s.qm",
91			loc.name().toUtf8().constData(),
92			sLocPath.toUtf8().constData(),
93			sLocName.toUtf8().constData());
94			#endif
95			}
96			}
97	capela	1473	}
98	capela	1740	#if defined(Q_WS_X11)
99			m_pDisplay = QX11Info::display();
100			m_aUnique = XInternAtom(m_pDisplay, QSAMPLER_XUNIQUE, false);
101			XGrabServer(m_pDisplay);
102			m_wOwner = XGetSelectionOwner(m_pDisplay, m_aUnique);
103			XUngrabServer(m_pDisplay);
104			#endif
105	capela	1473	}
106	capela	73
107	capela	1740	// Destructor.
108			~qsamplerApplication()
109			{
110			if (m_pMyTranslator) delete m_pMyTranslator;
111			if (m_pQtTranslator) delete m_pQtTranslator;
112			}
113
114			// Main application widget accessors.
115			void setMainWidget(QWidget *pWidget)
116			{
117			m_pWidget = pWidget;
118			#if defined(Q_WS_X11)
119			XGrabServer(m_pDisplay);
120			m_wOwner = m_pWidget->winId();
121			XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime);
122			XUngrabServer(m_pDisplay);
123			#endif
124			}
125
126			QWidget *mainWidget() const { return m_pWidget; }
127
128			// Check if another instance is running,
129			// and raise its proper main widget...
130			bool setup()
131			{
132			#if defined(Q_WS_X11)
133			if (m_wOwner != None) {
134			// First, notify any freedesktop.org WM
135			// that we're about to show the main widget...
136			Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay);
137			int iScreen = XScreenNumberOfScreen(pScreen);
138			XEvent ev;
139			memset(&ev, 0, sizeof(ev));
140			ev.xclient.type = ClientMessage;
141			ev.xclient.display = m_pDisplay;
142			ev.xclient.window = m_wOwner;
143			ev.xclient.message_type = XInternAtom(m_pDisplay, "_NET_ACTIVE_WINDOW", false);
144			ev.xclient.format = 32;
145			ev.xclient.data.l[0] = 0; // Source indication.
146			ev.xclient.data.l[1] = 0; // Timestamp.
147			ev.xclient.data.l[2] = 0; // Requestor's currently active window (none)
148			ev.xclient.data.l[3] = 0;
149			ev.xclient.data.l[4] = 0;
150			XSelectInput(m_pDisplay, m_wOwner, StructureNotifyMask);
151			XSendEvent(m_pDisplay, RootWindow(m_pDisplay, iScreen), false,
152			(SubstructureNotifyMask \| SubstructureRedirectMask), &ev);
153			XSync(m_pDisplay, false);
154			XRaiseWindow(m_pDisplay, m_wOwner);
155			// And then, let it get caught on destination
156			// by QApplication::x11EventFilter...
157			QByteArray value = QSAMPLER_XUNIQUE;
158			XChangeProperty(
159			m_pDisplay,
160			m_wOwner,
161			m_aUnique,
162			m_aUnique, 8,
163			PropModeReplace,
164			(unsigned char *) value.data(),
165			value.length());
166			// Done.
167			return true;
168			}
169			#endif
170			return false;
171			}
172
173			#if defined(Q_WS_X11)
174			bool x11EventFilter(XEvent *pEv)
175			{
176			if (m_pWidget && m_wOwner != None
177			&& pEv->type == PropertyNotify
178			&& pEv->xproperty.window == m_wOwner
179			&& pEv->xproperty.state == PropertyNewValue) {
180			// Always check whether our property-flag is still around...
181			Atom aType;
182			int iFormat = 0;
183			unsigned long iItems = 0;
184			unsigned long iAfter = 0;
185			unsigned char *pData = 0;
186			if (XGetWindowProperty(
187			m_pDisplay,
188			m_wOwner,
189			m_aUnique,
190			0, 1024,
191			false,
192			m_aUnique,
193			&aType,
194			&iFormat,
195			&iItems,
196			&iAfter,
197			&pData) == Success
198			&& aType == m_aUnique && iItems > 0 && iAfter == 0) {
199			// Avoid repeating it-self...
200			XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique);
201			// Just make it always shows up fine...
202			m_pWidget->show();
203			m_pWidget->raise();
204			m_pWidget->activateWindow();
205			}
206			// Free any left-overs...
207			if (iItems > 0 && pData)
208			XFree(pData);
209			}
210			return QApplication::x11EventFilter(pEv);
211			}
212			#endif
213
214			private:
215
216			// Translation support.
217			QTranslator *m_pQtTranslator;
218			QTranslator *m_pMyTranslator;
219
220			// Instance variables.
221			QWidget *m_pWidget;
222
223			#if defined(Q_WS_X11)
224			Display *m_pDisplay;
225			Atom m_aUnique;
226			Window m_wOwner;
227			#endif
228			};
229
230
231			//-------------------------------------------------------------------------
232			// main - The main program trunk.
233			//
234
235			int main ( int argc, char **argv )
236			{
237			Q_INIT_RESOURCE(qsampler);
238
239			qsamplerApplication app(argc, argv);
240
241	nagata	1643	#if defined(__APPLE__) // Toshi Nagata 20080105
242			{
243			// Set the plugin path to @exetutable_path/../plugins
244			QDir dir(QApplication::applicationDirPath());
245			dir.cdUp(); // "Contents" directory
246			QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins"));
247
248			// Set the PATH environment variable to include @executable_path/../../..
249			dir.cdUp();
250			dir.cdUp();
251			QString path(getenv("PATH"));
252			path = dir.absolutePath() + ":" + path;
253			setenv("PATH", path.toUtf8().constData(), 1);
254			}
255			#endif
256
257	capela	1473	// Construct default settings; override with command line arguments.
258	capela	1558	QSampler::Options options;
259	capela	1473	if (!options.parse_args(app.argc(), app.argv())) {
260			app.quit();
261			return 1;
262			}
263	capela	752
264	capela	1740	// Have another instance running?
265			if (app.setup()) {
266			app.quit();
267			return 2;
268			}
269
270	capela	1473	// Construct, setup and show the main form.
271			QSampler::MainForm w;
272			w.setup(&options);
273			w.show();
274	capela	73
275	capela	1740	// Settle this one as application main widget...
276			app.setMainWidget(&w);
277
278	capela	1473	// Register the quit signal/slot.
279			// app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
280	capela	73
281	capela	1473	return app.exec();
282	capela	73	}
283
284	capela	1464
285	capela	73	// end of main.cpp