Update Opie Documentation

1 files changed, 59 insertions, 3 deletions

diff --git a/libopie2/opiecore/device/odevice.cpp b/libopie2/opiecore/device/odevice.cpp
index 2b10034..ec861ee 100644
--- a/libopie2/opiecore/device/odevice.cpp
+++ b/libopie2/opiecore/device/odevice.cpp
@@ -299,98 +299,103 @@ bool ODevice::suspend()
 
 //#include <linux/fb.h> better not rely on kernel headers in userspace ...
 
 #define FBIOBLANK             OD_IO( 'F', 0x11 ) // 0x4611
 
 /* VESA Blanking Levels */
 #define VESA_NO_BLANKING      0
 #define VESA_VSYNC_SUSPEND    1
 #define VESA_HSYNC_SUSPEND    2
 #define VESA_POWERDOWN        3
 
 /**
 * This sets the display on or off
 */
 bool ODevice::setDisplayStatus ( bool on )
 {
     qDebug("ODevice::setDisplayStatus(%d)", on);
 
     if ( d->m_model == Model_Unknown )
         return false;
 
     bool res = false;
     int fd;
 
 #ifdef QT_QWS_DEVFS
     if (( fd = ::open ( "/dev/fb/0", O_RDWR )) >= 0 ) {
 #else
     if (( fd = ::open ( "/dev/fb0", O_RDWR )) >= 0 ) {
 #endif
         res = ( ::ioctl ( fd, FBIOBLANK, on ? VESA_NO_BLANKING : VESA_POWERDOWN ) == 0 );
         ::close ( fd );
     }
     return res;
 }
 
 /**
 * This sets the display brightness
 *
 * @param p The brightness to be set on a scale from 0 to 255
 * @return success or failure
 */
 bool ODevice::setDisplayBrightness ( int p)
 {
         Q_UNUSED( p )
     return false;
 }
 
 /**
-* @return returns the number of steppings on the brightness slider
-* in the Light-'n-Power settings.
+ * 
+ * @return Returns the number of steppings on the brightness slider
+ * in the Light-'n-Power settings. Values smaller zero and bigger
+ * than 255 do not make sense.
+ *
+ * \sa QSlider::setLineStep
+ * \sa QSlider::setPageStep
 */
 int ODevice::displayBrightnessResolution() const
 {
     return 16;
 }
 
 /**
 * This sets the display contrast
 * @param p The contrast to be set on a scale from 0 to 255
 * @return success or failure
 */
 bool ODevice::setDisplayContrast ( int p)
 {
         Q_UNUSED( p )
     return false;
 }
 
 /**
 * @return return the max value for the brightness settings slider
 *         or 0 if the device doesn't support setting of a contrast
 */
 int ODevice::displayContrastResolution() const
 {
     return 0;
 }
 
 /**
 * This returns the vendor as string
 * @return Vendor as QString
 */
 QString ODevice::vendorString() const
 {
     return d->m_vendorstr;
 }
 
 /**
 * This returns the vendor as one of the values of OVendor
 * @return OVendor
 */
 OVendor ODevice::vendor() const
 {
     return d->m_vendor;
 }
 
 /**
 * This returns the model as a string
 * @return A string representing the model
 */
@@ -666,129 +671,180 @@ void ODevice::reloadButtonMapping()
 
         b. setHeldAction ( OQCopMessage ( hch, hm, hdata ));
     }
 }
 
 void ODevice::remapPressedAction ( int button, const OQCopMessage &action )
 {
     initButtons();
 
     QString mb_chan;
 
     if ( button >= (int) d->m_buttons->count())
         return;
 
     ODeviceButton &b = ( *d->m_buttons ) [button];
         b. setPressedAction ( action );
 
     mb_chan=b. pressedAction(). channel();
 
     Config buttonFile ( "ButtonSettings" );
     buttonFile. setGroup ( "Button" + QString::number ( button ));
     buttonFile. writeEntry ( "PressedActionChannel", (const char*) mb_chan);
     buttonFile. writeEntry ( "PressedActionMessage", (const char*) b. pressedAction(). message());
 
 //  buttonFile. writeEntry ( "PressedActionArgs", encodeBase64 ( b. pressedAction(). data()));
 
     QCopEnvelope ( "QPE/System", "deviceButtonMappingChanged()" );
 }
 
 void ODevice::remapHeldAction ( int button, const OQCopMessage &action )
 {
     initButtons();
 
     if ( button >= (int) d->m_buttons->count())
         return;
 
     ODeviceButton &b = ( *d->m_buttons ) [button];
         b. setHeldAction ( action );
 
     Config buttonFile ( "ButtonSettings" );
     buttonFile. setGroup ( "Button" + QString::number ( button ));
     buttonFile. writeEntry ( "HeldActionChannel", (const char *) b. heldAction(). channel());
     buttonFile. writeEntry ( "HeldActionMessage", (const char *) b. heldAction(). message());
 
 //  buttonFile. writeEntry ( "HeldActionArgs", decodeBase64 ( b. heldAction(). data()));
 
     QCopEnvelope ( "QPE/System", "deviceButtonMappingChanged()" );
 }
+
+/**
+ * @internal
+ */
 void ODevice::virtual_hook(int, void* ){
 
 }
 
 /**
+ * \brief Send a QCOP Message before suspending
+ *
  * Sends a QCOP message to channel QPE/System
  * with the message "aboutToSuspend()" if this
- * is the windowing server
+ * is the windowing server.
+ * 
+ * Call this in your custom \sa suspend() Method
+ * before going to suspend.
+ * 
  */
 void ODevice::sendSuspendmsg()
 {
     if ( isQWS() )
         return;
 
     QCopEnvelope ( "QPE/System", "aboutToSuspend()" );
 }
 
 /**
  * \brief Prepend the QWSServer::KeyboardFilter to the list of installed KeyFilters
  *
  * Prepend a QWSServer::KeyboardFilter to the List of Keyboard
  * Filters. This function is the only way to prepend a KeyFilter.
  *
  * @param aFilter The KeyFilter to be prepended to the list of filters
  *
  * @see Opie::Core::OKeyFilter
  * @see Opie::Core::OKeyFilter::inst()
  */
 void ODevice::addPreHandler(QWSServer::KeyboardFilter*aFilter)
 {
     Opie::Core::OKeyFilter::inst()->addPreHandler(aFilter);
 }
 
 /**
  * \brief Remove the QWSServer::KeyboardFilter in the param from the list
  *
  * Remove the QWSServer::KeyboardFilter \par aFilter from the List
  * of Keyfilters. Call this when you delete the KeyFilter!
  *
  * @param aFilter The filter to be removed from the Opie::Core::OKeyFilter
  * @see Opie::Core::ODevice::addPreHandler
  */
 void ODevice::remPreHandler(QWSServer::KeyboardFilter*aFilter)
 {
     Opie::Core::OKeyFilter::inst()->remPreHandler(aFilter);
 }
 
+
+/**
+ * @internal
+ * 
+ * @see changeMixerForAlarm
+ */
 void ODevice::playingStopped() {
     const_cast<QObject*>(sender())->disconnect( this );
 #ifndef QT_NO_SOUND
     if ( d->m_sound >= 0 ) {
         ::ioctl ( d->m_sound, MIXER_WRITE( d->m_mixer ), &d->m_vol );
         ::close ( d->m_sound );
     }
 #endif
 }
 
+
+/**
+ * \brief Change the Volume for the Alarm and set it back after playing is finished
+ *
+ * If you play an Alarm Sound you might want to change the Mixer to
+ * full volume and ignore the user setting. After it \sa Sound::isFinished
+ * you would turn the volume back to the user preference.
+ * The problem is that we used to enter the event loop while waiting
+ * for the sound to be finished triggering all kind of reentrance
+ * problems what a library shouldn't introduce.
+ * Instead of manually waiting for the sound to be finished use
+ * this Method and it will automatically restore the Mixer to
+ * the user configuration after the sound finished playing.
+ *
+ * Note: The onwership of \param snd is not transfered and playing
+ * is not started in this method. If 'snd' gets deleted before
+ * playing is finished the volume doesn't get set back to
+ * the user preference!
+ *
+ * \code
+ * static Sound snd("alarm");
+ * if(!snd.isFinished())
+ *    return;
+ *
+ * changeMixerForAlarm( my_channel, "/dev/mixer", &snd );
+ * snd.play()
+ * \endcode
+ * 
+ * 
+ *
+ * @param mixer The mixer number/channel to use
+ * @param file  The file name. If you convert from QString use QFile::encodeName
+ * @param snd   The sound to wait for finishing
+ * 
+ */
 void ODevice::changeMixerForAlarm( int mixer, const char* file, Sound *snd ) {
 #ifndef QT_NO_SOUND
     if (( d->m_sound = ::open ( file, O_RDWR )) >= 0 ) {
         if ( ::ioctl ( d->m_sound, MIXER_READ( mixer ), &d->m_vol ) >= 0 ) {
             Config cfg ( "qpe" );
             cfg. setGroup ( "Volume" );
 
             int volalarm = cfg. readNumEntry ( "AlarmPercent", 50 );
             if ( volalarm < 0 )
                 volalarm = 0;
             else if ( volalarm > 100 )
                 volalarm = 100;
             volalarm |= ( volalarm << 8 );
 
             if ( ::ioctl ( d->m_sound, MIXER_WRITE( mixer ), &volalarm ) >= 0 )
                 register_qpe_sound_finished(snd, this, SLOT(playingStopped()));
         }
         d->m_mixer = mixer;
     }
 #endif
 }
 
 }
 }