qpeapplication.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

	AppLnkSet apps( appsPath );

	QList<AppLnk> appsList = apps.children();
	for ( QListIterator<AppLnk> it(appsList); it.current(); ++it ) {
	    if ( (*it)->exec() == appName ) {
		mw->setIcon( (*it)->pixmap() );
		mw->setCaption( (*it)->name() );
		return TRUE;
	    }
	}
    */
	return FALSE;
    }


    void show(QWidget* mw, bool nomax)
    {
	setWidgetCaptionFromAppName( mw, appName, QPEApplication::qpeDir() + "apps" );
	nomaximize = nomax;
	qpe_main_widget = mw;
	qcopQok = TRUE;
#ifndef QT_NO_COP
	sendQCopQ();
#endif
	if ( preloaded ) {
	    if(forceshow)
		show_mx(mw,nomax, appName);
	} else if ( keep_running ) {
	    show_mx(mw,nomax, appName);
	}
    }

#ifdef Q_WS_QWS
    void loadTextCodecs()
    {
	QStringList list = textPluginLoader.list();
	QStringList::Iterator it;
	for ( it = list.begin(); it != list.end(); ++it ) {
	    TextCodecInterface *iface = 0;
	    if ( textPluginLoader.queryInterface( *it, IID_QtopiaTextCodec, (QUnknownInterface**)&iface ) == QS_OK && iface ) {
		QValueList<int> mibs = iface->mibEnums();
		for (QValueList<int>::ConstIterator i=mibs.begin(); i!=mibs.end(); ++i) {
		    (void)iface->createForMib(*i);
		    // ### it exists now; need to remember if we can delete it
		}
	    }
	}
    }

    void loadImageCodecs()
    {
	QStringList list = imagePluginLoader.list();
	QStringList::Iterator it;
	for ( it = list.begin(); it != list.end(); ++it ) {
	    ImageCodecInterface *iface = 0;
	    if ( imagePluginLoader.queryInterface( *it, IID_QtopiaImageCodec, (QUnknownInterface**)&iface ) == QS_OK && iface ) {
		QStringList formats = iface->keys();
		for (QStringList::ConstIterator i=formats.begin(); i!=formats.end(); ++i) {
		    (void)iface->installIOHandler(*i);
		    // ### it exists now; need to remember if we can delete it
		}
	    }
	}
    }
#endif

#ifdef Q_WS_QWS
    PluginLoaderIntern styleLoader;
    StyleInterface *styleIface;
    QString styleName;
    PluginLoaderIntern textPluginLoader;
    PluginLoaderIntern imagePluginLoader;
#endif
    QString decorationName;
    QString decorationTheme;
#ifdef QTOPIA_PHONE
    QGuardedPtr<ContextMenu> editMenu;
    QStringList iconPath;
#endif
};


class ResourceMimeFactory : public QMimeSourceFactory {
public:
    ResourceMimeFactory() : resImage(0)
    {
#ifdef Q_WS_QWS
	setFilePath( Global::helpPath() );
	setExtensionType("html","text/html;charset=UTF-8");
#endif
    }

    ~ResourceMimeFactory()
    {
	delete resImage;
    }

    const QMimeSource* data(const QString& abs_name) const
    {
	const QMimeSource* r = QMimeSourceFactory::data(abs_name);
	if ( !r ) {
	    int sl = abs_name.length();
	    do {
		sl = abs_name.findRev('/',sl-1);
		QString name = sl>=0 ? abs_name.mid(sl+1) : abs_name;
		int dot = name.findRev('.');
		if ( dot >= 0 )
		    name = name.left(dot);
#ifdef Q_WS_QWS
		QImage img = Resource::loadImage(name);
		if( img.isNull() )
		    img = qtopia_internal_loadIconSet(name).pixmap( QIconSet::Small, TRUE ).convertToImage();
		if ( !img.isNull() ) {
		    ResourceMimeFactory *that = (ResourceMimeFactory*)this;
		    delete that->resImage;
		    that->resImage = new QImageDrag( img );
		    r = resImage;
		}
#endif
	    } while (!r && sl>0);
	}
	return r;
    }

private:
    QImageDrag *resImage;
};

int qtopia_muted=0;

#ifndef QTOPIA_DESKTOP
static void setVolume(int t=0, int percent=-1)
{
    switch (t) {
	case 0: {
	    Config cfg("Sound");
	    cfg.setGroup("System");
	    if ( percent < 0 ) {
		percent = cfg.readNumEntry("Volume",50);
		qtopia_muted = cfg.readBoolEntry("Muted",false);
            }
	    int fd = 0;
#ifndef Q_OS_WIN32
	    if ((fd = open("/dev/mixer", O_RDWR))>=0) { // Some devices require this, O_RDONLY doesn't always work
		int vol = qtopia_muted ? 0 : percent;
		// set both channels to same volume
		vol |= vol << 8;
		ioctl(fd, MIXER_WRITE(0), &vol);
		::close(fd);
	    }
#else
	    HWAVEOUT handle;      
	    WAVEFORMATEX formatData;
	    formatData.cbSize = sizeof(WAVEFORMATEX);
	    formatData.wFormatTag = WAVE_FORMAT_PCM;
	    formatData.nAvgBytesPerSec = 4 * 44000;
	    formatData.nBlockAlign = 4;
	    formatData.nChannels = 2;
	    formatData.nSamplesPerSec = 44000;
	    formatData.wBitsPerSample = 16;
	    waveOutOpen(&handle, WAVE_MAPPER, &formatData, 0L, 0L, CALLBACK_NULL);
	    int vol = qtopia_muted ? 0 : percent;
	    unsigned int volume = (vol << 24) | (vol << 8);
	    if ( waveOutSetVolume( handle, volume ) )
		qDebug( "set volume of audio device failed" );
	    waveOutClose( handle );
#endif
	} break;
    }
}
#endif


static int& hack(int& i)
{
#if QT_VERSION <= 230 && defined(QT_NO_CODECS)
    // These should be created, but aren't in Qt 2.3.0
    (void)new QUtf8Codec;
    (void)new QUtf16Codec;
#endif
    return i;
}

#ifdef Q_WS_QWS
static bool forced_off = FALSE;
static int curbl=-1;

static int backlight()
{
    if ( curbl == -1 ) {
	// Read from config
	Config config( "qpe" );
	config.setGroup( "Screensaver" );
	curbl = config.readNumEntry("Brightness",255);
    }
    return curbl;
}

void qpe_setBrightness(int bright);

static void setBacklight(int bright)
{
    if ( bright == -3 ) {
	// Forced on
	forced_off = FALSE;
	bright = -1;
    }
    if ( forced_off && bright != -2 )
	return;
    if ( bright == -2 ) {
	// Toggle between off and on
	bright = curbl ? 0 : -1;
	forced_off = !bright;
    }
    if ( bright == -1 ) {
	// Read from config
	Config config( "qpe" );
	config.setGroup( "Screensaver" );
	bright = config.readNumEntry("Brightness",255);
    }
    qpe_setBrightness(bright);
    curbl = bright;
}

void qpe_setBacklight(int bright) { setBacklight(bright); }
#endif

static bool dim_on = FALSE;
static bool lightoff_on = FALSE;
static bool networkedsuspend_on = FALSE;
static bool poweredsuspend_on = FALSE;
#ifdef QTOPIA_PHONE
static int homescreen_level = -1;
#endif

#ifdef Q_WS_QWS
static int disable_suspend = 100;

#ifndef QTOPIA_PHONE
static bool powerOnlineStopsSuspend()
{
    return !poweredsuspend_on && PowerStatusManager::readStatus().acStatus() == PowerStatus::Online;
}

static bool networkOnlineStopsSuspend()
{
    return !networkedsuspend_on && Network::networkOnline();
}
#endif

class QPEScreenSaver : public QWSScreenSaver
{

public:
    QPEScreenSaver()
    {
    }
    void restore()
    {
	setBacklight(-1);
    }
    bool save(int level)
    {
#ifdef QTOPIA_PHONE
        if (disable_suspend > 2 && homescreen_level != -1 && homescreen_level <= level) {
            if (homescreen_level == level) {
#ifndef QT_NO_COP
                QCopEnvelope showHome( "QPE/System", "showHomeScreen()" );
                QCopEnvelope closeApps( "QPE/System", "close()" );
                return TRUE;
#endif      
            } else
                --level; 
        }
#endif
	switch ( level ) {
	 case 0:
	    if ( disable_suspend > 0 && dim_on ) {
		if (backlight() > 1)
		    setBacklight(1); // lowest non-off
	    }
	    return TRUE;
	    break;
	 case 1:
	    if ( disable_suspend > 1 && lightoff_on ) {
		setBacklight(0); // off
	    }
	    return TRUE;
	    break;
	 case 2:
#ifndef QTOPIA_PHONE
	    if ( disable_suspend > 2 && !powerOnlineStopsSuspend() && !networkOnlineStopsSuspend() )
	    {   
                if (PowerStatusManager::APMEnabled()) {
    		    QWSServer::processKeyEvent( 0xffff, Qt::Key_F34, FALSE, TRUE, FALSE );
		    return FALSE;
                } else
                    return TRUE;
            }
#else
            //no need to suspend in Phone Edition -> do nothing 
	    return TRUE;
#endif
	    break;
	}
	return FALSE;
    }
    static const int eventBlockLevel = -1;
};
#endif

static int ssi(int interval, Config &config, const QString &enable, const QString& value, int def)
{
    if ( !enable.isEmpty() && config.readNumEntry(enable,0) == 0 )
	return 0;

    if ( interval < 0 ) {
	// Restore screen blanking and power saving state
	interval = config.readNumEntry( value, def );
    }
    return interval;
}

static void setScreenSaverIntervals(int i1, int i2, int i3)
{
    Config config( "qpe" );
    config.setGroup( "Screensaver" );

    int v[5];
    i1 = ssi(i1, config, "Dim","Interval_Dim", 30); // No tr
    i2 = ssi(i2, config, "LightOff","Interval_LightOff", 20);
#ifndef QTOPIA_PHONE
    i3 = ssi(i3, config, "","Interval", 60); // No tr
#else
     // phone edition doesn't have 3rd screensaver level
#endif

    //qDebug("screen saver intervals: %d %d %d", i1, i2, i3);

    v[0] = QMAX( 1000*i1, 100);
    v[1] = QMAX( 1000*i2, 100);
#ifndef QTOPIA_PHONE
    v[2] = QMAX( 1000*i3, 100);
#else
    v[2] = 0;
#endif
    v[3] = 0;
    v[4] = 0;
   
#ifdef QTOPIA_PHONE
    config.setGroup( "HomeScreen" );
    bool showhomescreen_on = config.readBoolEntry("ShowHomeScreen", FALSE);
    if (showhomescreen_on) {
        int showhomescreen_interval;
        showhomescreen_interval = 1000*config.readNumEntry("Interval_HomeScreen", 30);
        for (int level=0; level < 5; level++) {
            if (v[level] && v[level] < showhomescreen_interval)
                showhomescreen_interval -= v[level];
            else if (!v[level]) {
                v[level]=showhomescreen_interval;
                homescreen_level = level;
                break;  
            } else {
                for (int i = 3; i >= level; i--) {
                    v[i+1] = v[i];
                }
                v[level] = showhomescreen_interval;
                v[level+1] = QMAX(v[level+1]-showhomescreen_interval, 100);
                homescreen_level = level;
                break;
            }
        }
        //qDebug(QString("%1 %2 %3 %4").arg(v[0]).arg(v[1]).arg(v[2]).arg(v[3]));
    } else
        homescreen_level = -1;

#endif
    dim_on = ( (i1 != 0) ? config.readNumEntry("Dim",1) : FALSE );
    lightoff_on = ( (i2 != 0 ) ? config.readNumEntry("LightOff",1) : FALSE );
    poweredsuspend_on = config.readNumEntry("Suspend",0);
    networkedsuspend_on = config.readNumEntry("NetworkedSuspend",1);
#ifdef Q_WS_QWS
    if ( !i1 && !i2 && !i3 
#ifdef QTOPIA_PHONE
            && !showhomescreen_on
#endif
        ){
	QWSServer::setScreenSaverInterval(0);
    }else{
#if QT_VERSION > 237
	QWSServer::setScreenSaverIntervals(v, QPEScreenSaver::eventBlockLevel);
#else
	QWSServer::setScreenSaverIntervals(v);
#endif
    }
#endif
}

#ifndef QTOPIA_DESKTOP
static void setScreenSaverInterval(int interval)
{
    setScreenSaverIntervals(-1,-1,interval);
}
#endif


/*!
  \class QPEApplication qpeapplication.h
  \brief The QPEApplication class implements various system services
    that are available to all Qtopia applications.

  Simply by using QPEApplication instead of QApplication, a standard Qt
  application becomes a Qtopia application. It automatically follows
  style changes, quits and raises, and in the
  case of \link docwidget.html document-oriented\endlink applications,
  changes the currently displayed document in response to the environment.

  To create a \link docwidget.html document-oriented\endlink
  application use showMainDocumentWidget(); to create a
  non-document-oriented application use showMainWidget(). The
  keepRunning() function indicates whether the application will
  continue running after it's processed the last \link qcop.html
  QCop\endlink message. This can be changed using setKeepRunning().

  A variety of signals are emitted when certain events occur, for
  example, timeChanged(), clockChanged(), weekChanged(),
  dateFormatChanged() and volumeChanged(). If the application receives
  a \link qcop.html QCop\endlink message on the application's
  QPE/Application/\e{appname} channel, the appMessage() signal is
  emitted. There are also flush() and reload() signals, which
  are emitted when synching begins and ends respectively - upon these
  signals, the application should save and reload any data
  files that are involved in synching. Most of these signals will initially
  be received and unfiltered through the appMessage() signal.

  This class also provides a set of useful static functions. The
  qpeDir() and documentDir() functions return the respective paths.
  The grabKeyboard() and ungrabKeyboard() functions are used to
  control whether the application takes control of the device's
  physical buttons (e.g. application launch keys). The stylus' mode of
  operation is set with setStylusOperation() and retrieved with
  stylusOperation(). There are also setInputMethodHint() and
  inputMethodHint() functions.

  \ingroup qtopiaemb
*/

/*!
    \enum QPEApplication::screenSaverHint

    \value Disable the screen should never blank
    \value DisableLightOff the screen should never blank and the
    backlight should never switch off
    \value DisableSuspend the screen should blank when the device goes
    into suspend mode
    \value Enable screen blanking and switching off the backlight are
    both enabled

    Currently, this is only used internally.

*/

/*!
  \fn void QPEApplication::clientMoused()

  \internal
*/

/*!
  \fn void QPEApplication::timeChanged();

  This signal is emitted when the time changes outside the normal
  passage of time, i.e. if the time is set backwards or forwards.

  If the application offers the TimeMonitor service, it will get
  the QCop message that causes this signal even if it is not running,
  thus allowing it to update any alarms or other time-related records.
*/

/*!
  \fn void QPEApplication::categoriesChanged();

  This signal is emitted whenever a category is added, removed or edited.
  Note, on Qtopia 1.5.0, this signal is never emitted.
*/