1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 // System includes

    19 #include <HbDocumentLoader>

    20 #include <HbEffect>

    21 #include <QPainter>

    22 #include <QStringListModel>

    23 #include <QGraphicsSceneResizeEvent>

    24 #include <QPen>

    25 #include <HbPushButton>

    26 #include <QTimer>

    27 #include <HbColorScheme>

    28 #include <HbEvent>

    29 #include <HbSwipeGesture>

    30 #include <HbDeviceProfile>

    31 #include <QDebug>

    32 

    33 // User includes

    34 #include "radiofrequencystripbase.h"

    35 #include "radiofrequencystripdef.h"

    36 #include "radiofrequencyitem.h"

    37 

    38 /*!

    39  * Convenience function to check signal-slot connections

    40  */

    41 //#define CHECK_SIGNAL_CONNECTIONS

    42 static bool connectAndCheck( const QObject* sender, const char* signal,

    43                              const QObject* receiver, const char* member,

    44                              Qt::ConnectionType type = Qt::AutoConnection )

    45 {

    46     bool connected = QObject::connect( sender, signal, receiver, member, type );

    47 

    48     #ifdef CHECK_SIGNAL_CONNECTIONS

    49 

    50     if ( !connected ) {

    51         qDebug() << "Failed to make a signal-slot connection!";

    52         qDebug() << "sender: " << sender->metaObject()->className();

    53         qDebug() << "signal: " << signal;

    54         qDebug() << "receiver: " << receiver->metaObject()->className();

    55         qDebug() << "slot/signal: " << signal;

    56 

    57         Q_ASSERT( false );

    58 

    59         // ----------------------------------------------------------------

    60         // SIGNAL-SLOT CONNECT FAILED!

    61         // ----------------------------------------------------------------

    62     }

    63 

    64     #endif // CHECK_SIGNAL_CONNECTIONS

    65 

    66     return connected;

    67 }

    68 

    69 /*!

    70  *

    71  */

    72 RadioFrequencyStripBase::RadioFrequencyStripBase( QGraphicsItem* parent ) :

    73     RadioStripBase( parent ),

    74     mItemHeight( 8 ),

    75     mMinFrequency( 87500000 ),

    76     mMaxFrequency( 108000000 ),

    77     mFrequencyStepSize( 100000 ),

    78     mFrequency( 87500000 ),

    79     mSelectorImage( new QGraphicsPixmapItem( this ) ),

    80     mSeparatorPos( 0.0 ),

    81     mMaxWidth( 0 ),

    82     mSelectorPos( 0.0 ),

    83     mLeftButton( 0 ),

    84     mRightButton( 0 ),

    85     mManualSeekTimer( NULL ),

    86     mManualSeekMode( false ),

    87     mLastReportedFrequency( 0 ),

    88     mManualSeekTimerId( 0 ),

    89     mForegroundColor( Qt::white )//HbColorScheme::color( FrequencyStrip::TEXT_COLOR_ATTRIBUTE ) )

    90 {

    91     setScrollingStyle( HbScrollArea::PanWithFollowOn );

    92     setItemSize( QSizeF( FrequencyStrip::ITEM_WIDTH + FrequencyStrip::PIXMAP_OVERLAP / 2, mItemHeight ) );

    93     setOverlap( FrequencyStrip::PIXMAP_OVERLAP / 2 );

    94 }

    95 

    96 /*!

    97  * Property

    98  */

    99 void RadioFrequencyStripBase::setItemHeight( int itemHeight )

   100 {

   101     mItemHeight = itemHeight;

   102 }

   103 

   104 /*!

   105  * Property

   106  */

   107 int RadioFrequencyStripBase::itemHeight() const

   108 {

   109     return mItemHeight;

   110 }

   111 

   112 /*!

   113  *

   114  */

   115 void RadioFrequencyStripBase::initbase( uint minFrequency, uint maxFrequency, uint stepSize, uint frequency )

   116 {

   117     mMinFrequency       = minFrequency;

   118     mMaxFrequency       = maxFrequency;

   119     mFrequencyStepSize  = stepSize;

   120     mFrequency          = frequency;

   121 

   122     initModel();

   123     initEmptyItems();

   124     initPositions();

   125 

   126     HbDeviceProfile deviceProfile;

   127     mItemHeight = static_cast<int>( mItemHeight * deviceProfile.unitValue() );

   128 

   129     mManualSeekTimer = new QTimer( this );

   130     mManualSeekTimer->setInterval( FrequencyStrip::MANUALSEEK_START_TIMEOUT );

   131     mManualSeekTimer->setSingleShot( true );

   132     connectAndCheck( mManualSeekTimer,   SIGNAL(timeout()),

   133                      this,               SLOT(toggleManualSeek()) );

   134 

   135     connectAndCheck( this,           SIGNAL(scrollingEnded()),

   136                      this,           SLOT(handleScrollingEnd()) );

   137 

   138     grabGesture( Qt::SwipeGesture );

   139 

   140     //TODO: Remove. Stepsize temporarily hardcoded to 100 Khz in europe region

   141     if ( mFrequencyStepSize < FrequencyStrip::ONE_HUNDRED_KHZ ) {

   142         mFrequencyStepSize = FrequencyStrip::ONE_HUNDRED_KHZ;

   143     }

   144 

   145     updateAllItems();

   146 

   147     showButtons();

   148 }

   149 

   150 /*!

   151  *

   152  */

   153 void RadioFrequencyStripBase::createButtonsFromDocml( HbDocumentLoader& uiLoader, const QString& leftButtonName, const QString& rightButtonName )

   154 {

   155     Q_ASSERT( !mLeftButton && !mRightButton );

   156     mLeftButton = qobject_cast<HbPushButton*>( uiLoader.findWidget( leftButtonName ) );

   157     mRightButton = qobject_cast<HbPushButton*>( uiLoader.findWidget( rightButtonName ) );

   158 

   159     initButtons();

   160 }

   161 

   162 /*!

   163  *

   164  */

   165 void RadioFrequencyStripBase::createButtons()

   166 {

   167     Q_ASSERT( !mLeftButton && !mRightButton );

   168     mLeftButton = new HbPushButton( this );

   169     mRightButton = new HbPushButton( this );

   170 

   171     mLeftButton->setIcon( HbIcon( "qtg_mono_previous" ) );

   172     mRightButton->setIcon( HbIcon( "qtg_mono_next" ) );

   173 

   174     initButtons();

   175 }

   176 

   177 /*!

   178  *

   179  */

   180 void RadioFrequencyStripBase::setFrequency( const uint frequency, int reason, Scroll::Direction direction )

   181 {

   182     if ( mFrequencies.contains( frequency ) ) {

   183         scrollToFrequency( frequency, direction, mAutoScrollTime );

   184     }

   185 }

   186 

   187 /*!

   188  *

   189  */

   190 uint RadioFrequencyStripBase::frequency() const

   191 {

   192     return mFrequency;

   193 }

   194 

   195 /*!

   196  *

   197  */

   198 bool RadioFrequencyStripBase::isInManualSeekMode() const

   199 {

   200     return mManualSeekMode;

   201 }

   202 

   203 /*!

   204  *

   205  */

   206 void RadioFrequencyStripBase::cancelManualSeek()

   207 {

   208     mManualSeekTimer->stop();

   209     if ( mManualSeekMode ) {

   210         toggleManualSeek();

   211     }

   212 }

   213 

   214 /*!

   215  *

   216  */

   217 void RadioFrequencyStripBase::addScannedStation( uint frequency )

   218 {

   219     FrequencyPos pos = mFrequencies.value( frequency );

   220     updateItem( pos.mItem, frequency );

   221 }

   222 

   223 /*!

   224  *

   225  */

   226 void RadioFrequencyStripBase::updateFavorite( uint frequency )

   227 {

   228     FrequencyPos pos = mFrequencies.value( frequency );

   229     updateItem( pos.mItem );

   230 }

   231 

   232 /*!

   233  * Public slot

   234  *

   235  */

   236 void RadioFrequencyStripBase::setScanningMode( bool isScanning )

   237 {

   238     mManualSeekTimer->stop();

   239     if ( isScanning ) {

   240         initEmptyItems();

   241         hideButtons();

   242         scrollToFrequency( mMinFrequency, Scroll::Shortest, mAutoScrollTime );

   243     } else {

   244         showButtons();

   245     }

   246     setEnabled( !isScanning );

   247 }

   248 

   249 /*!

   250  * Private slot

   251  *

   252  */

   253 void RadioFrequencyStripBase::initEmptyItems()

   254 {

   255     //TODO: Remove the weird hack of checking the sender

   256     if ( !sender() || !isScanning() ) {

   257         QList<FrequencyStrip::StationMarker> emptyList;

   258         foreach ( RadioFrequencyItem* item, mFrequencyItems ) {

   259             QPixmap pixmap = drawPixmap( item->frequency(), emptyList, item );

   260             item->setPixmap( pixmap );

   261         }

   262     }

   263 }

   264 

   265 /*!

   266  * Private slot

   267  *

   268  */

   269 void RadioFrequencyStripBase::removeStation( const QModelIndex& parent, int first, int last )

   270 {

   271     Q_UNUSED( parent );

   272     updateStationsInRange( first, last, true );

   273 }

   274 

   275 /*!

   276  * Private slot

   277  *

   278  */

   279 void RadioFrequencyStripBase::updateStation( const QModelIndex& parent, int first, int last )

   280 {

   281     Q_UNUSED( parent );

   282     updateStationsInRange( first, last );

   283 }

   284 

   285 /*!

   286  * Private slot

   287  */

   288 void RadioFrequencyStripBase::handleLeftButton()

   289 {

   290     skipToPreviousFavorite();

   291 }

   292 

   293 /*!

   294  * Private slot

   295  */

   296 void RadioFrequencyStripBase::handleRightButton()

   297 {

   298     skipToNextFavorite();

   299 }

   300 

   301 /*!

   302  * Private slot

   303  */

   304 void RadioFrequencyStripBase::handleLongLeftButton()

   305 {

   306     seekDown();

   307 }

   308 

   309 /*!

   310  * Private slot

   311  */

   312 void RadioFrequencyStripBase::handleLongRightButton()

   313 {

   314     seekUp();

   315 }

   316 

   317 /*!

   318  * Private slot

   319  *

   320  */

   321 void RadioFrequencyStripBase::toggleManualSeek()

   322 {

   323     mManualSeekMode = !mManualSeekMode;

   324     emit manualSeekChanged( mManualSeekMode );

   325 

   326     if ( mManualSeekMode ) {

   327         grabMouse();

   328         hideButtons();

   329         mManualSeekTimerId = startTimer( FrequencyStrip::MANUALSEEK_SIGNAL_DELAY );

   330     } else {

   331         ungrabMouse();

   332         showButtons();

   333         killTimer( mManualSeekTimerId );

   334         mManualSeekTimerId = 0;

   335     }

   336 }

   337 

   338 /*!

   339  * Private slot

   340  */

   341 void RadioFrequencyStripBase::handleScrollingEnd()

   342 {

   343     // Check if the selector is in the invalid area where the strip loops around

   344     const int selectorPosition = selectorPos();

   345     if ( mManualSeekMode ) {

   346         if ( !mPositions.contains( selectorPosition ) ) {

   347             if ( selectorPosition < mMaxWidth - FrequencyStrip::ITEM_WIDTH + mSeparatorPos ) {

   348                 scrollToFrequency( mMaxFrequency, Scroll::Shortest, 500 );

   349                 emitFrequencyChanged( mMaxFrequency, FrequencyStrip::ManualSeekUpdate, Scroll::Shortest );

   350             } else {

   351                 scrollToFrequency( mMinFrequency, Scroll::Shortest, 500 );

   352                 emitFrequencyChanged( mMinFrequency, FrequencyStrip::ManualSeekUpdate, Scroll::Shortest );

   353             }

   354         }

   355 

   356         mManualSeekTimer->start( FrequencyStrip::MANUALSEEK_END_TIMEOUT );

   357     }

   358 }

   359 

   360 /*!

   361  * \reimp

   362  */

   363 void RadioFrequencyStripBase::updateItemPrimitive( QGraphicsItem* itemToUpdate, int itemIndex )

   364 {

   365     QGraphicsPixmapItem* item = static_cast<QGraphicsPixmapItem*>( itemToUpdate );

   366     if ( itemIndex < mFrequencyItems.count() ) {

   367         item->setPixmap( mFrequencyItems.at( itemIndex )->updatePrimitive( item ) );

   368     }

   369 }

   370 

   371 /*!

   372  * \reimp

   373  */

   374 QGraphicsItem* RadioFrequencyStripBase::createItemPrimitive( QGraphicsItem* parent )

   375 {

   376     return new QGraphicsPixmapItem( parent );

   377 }

   378 

   379 /*!

   380  * \reimp

   381  */

   382 void RadioFrequencyStripBase::scrollPosChanged()

   383 {

   384     if ( mManualSeekMode ) {

   385         const int pos = selectorPos();

   386         const uint frequency = mPositions.value( pos );

   387         if ( frequency > 0 ) {

   388             mFrequency = mPositions.value( pos );

   389             emitFrequencyChanged( mFrequency, FrequencyStrip::ManualSeekUpdate, Scroll::Shortest );

   390         }

   391     }

   392 }

   393 

   394 /*!

   395  * \reimp

   396  */

   397 void RadioFrequencyStripBase::resizeEvent ( QGraphicsSceneResizeEvent* event )

   398 {

   399     RadioStripBase::resizeEvent( event );

   400 

   401     initSelector();

   402 

   403     const qreal height = event->newSize().height();

   404     const qreal width = event->newSize().width();

   405 

   406     mSelectorPos = width / 2;

   407     mSelectorImage->setOffset( mSelectorPos - ( FrequencyStrip::INDICATOR_WIDTH / 2 ), 0.0 );

   408 

   409     if ( mLeftButton && mRightButton ) {

   410         mLeftButton->resize( height, height );

   411         mRightButton->resize( height, height );

   412         mRightButton->setPos( QPointF( width - height, 0 ) );

   413     }

   414 

   415     scrollToFrequency( mFrequency );

   416 }

   417 

   418 /*!

   419  * \reimp

   420  */

   421 void RadioFrequencyStripBase::changeEvent( QEvent* event )

   422 {

   423     if ( event->type() == HbEvent::ThemeChanged ) {

   424         // Update the foreground color and redraw each item

   425         mForegroundColor = Qt::white;// HbColorScheme::color( FrequencyStrip::TEXT_COLOR_ATTRIBUTE );

   426         updateAllItems();

   427     }

   428 

   429     return RadioStripBase::changeEvent(event);

   430 }

   431 

   432 /*!

   433  * \reimp

   434  */

   435 void RadioFrequencyStripBase::mousePressEvent( QGraphicsSceneMouseEvent* event )

   436 {

   437     RadioStripBase::mousePressEvent( event );

   438 

   439     mManualSeekTimer->stop();

   440     if ( mManualSeekMode ) {

   441         const bool insideStrip = rect().contains( event->pos() );

   442         if ( !insideStrip ) {

   443             toggleManualSeek();

   444         }

   445     } else {

   446         mManualSeekTimer->start( FrequencyStrip::MANUALSEEK_START_TIMEOUT );

   447     }

   448 }

   449 

   450 /*!

   451  * \reimp

   452  */

   453 void RadioFrequencyStripBase::mouseReleaseEvent( QGraphicsSceneMouseEvent* event )

   454 {

   455     RadioStripBase::mouseReleaseEvent( event );

   456 

   457     mManualSeekTimer->stop();

   458     if ( mManualSeekMode && !isScrolling() ) {

   459         mManualSeekTimer->start( FrequencyStrip::MANUALSEEK_END_TIMEOUT );

   460     }

   461 }

   462 

   463 /*!

   464  * \reimp

   465  */

   466 void RadioFrequencyStripBase::gestureEvent( QGestureEvent* event )

   467 {

   468     HbSwipeGesture* swipeGesture = static_cast<HbSwipeGesture*>( event->gesture( Qt::SwipeGesture ) );

   469     if ( swipeGesture && !mManualSeekMode ) {

   470         if ( swipeGesture->state() == Qt::GestureFinished ) {

   471             if ( swipeGesture->horizontalDirection() == QSwipeGesture::Left ) {

   472                 skipToNext();

   473             } else if ( swipeGesture->horizontalDirection() == QSwipeGesture::Right ) {

   474                 skipToPrevious();

   475             }

   476         }

   477     } else if ( mManualSeekMode ) {

   478         RadioStripBase::gestureEvent( event );

   479     }

   480 }

   481 

   482 /*!

   483  * \reimp

   484  */

   485 void RadioFrequencyStripBase::timerEvent( QTimerEvent* event )

   486 {

   487     Q_UNUSED( event );

   488     if ( mLastReportedFrequency != mFrequency ) {

   489         mLastReportedFrequency = mFrequency;

   490         emitFrequencyChanged( mFrequency, FrequencyStrip::ManualSeekTune, Scroll::Shortest );

   491     }

   492 }

   493 

   494 /*!

   495  *

   496  */

   497 void RadioFrequencyStripBase::initModel()

   498 {

   499     const uint minFreq = uint( qreal(mMinFrequency) / FrequencyStrip::ONE_HERTZ + FrequencyStrip::ROUNDER );

   500     const uint maxFreq = uint( qreal(mMaxFrequency) / FrequencyStrip::ONE_HERTZ + 0.9 ); // always round up

   501 

   502     QStringList list;

   503     QString freqText;

   504     for ( uint i = minFreq; i <= maxFreq; ++i ) {

   505         freqText = QString::number( i );

   506         list.append( freqText );

   507         mFrequencyItems.append( new RadioFrequencyItem( freqText ) );

   508     }

   509     mFrequencyItems.append( new RadioFrequencyItem( "" ) );

   510     list.append( "" );

   511 

   512     mMaxWidth = list.count() * FrequencyStrip::ITEM_WIDTH;

   513 

   514     mSeparatorPos = qreal(FrequencyStrip::ITEM_WIDTH) / 2;

   515     const uint minDrawableFreq = minFreq * FrequencyStrip::ONE_HERTZ - FrequencyStrip::HALF_HERTZ;;

   516     const uint maxDrawableFreq = maxFreq * FrequencyStrip::ONE_HERTZ + FrequencyStrip::HALF_HERTZ;

   517     mSeparatorPos += qreal( ( mMinFrequency  - minDrawableFreq ) / 2 ) / FrequencyStrip::PIXEL_IN_HZ;

   518     mSeparatorPos -= qreal( ( maxDrawableFreq - mMaxFrequency ) / 2 ) / FrequencyStrip::PIXEL_IN_HZ;

   519 

   520     setModel( new QStringListModel( list, this ) );

   521 }

   522 

   523 /*!

   524  *

   525  */

   526 void RadioFrequencyStripBase::initSelector()

   527 {

   528     QPixmap selectorPixmap = QPixmap( QSize( FrequencyStrip::SELECTOR_WIDTH, (int)size().height() ) );

   529     selectorPixmap.fill( Qt::red );

   530     mSelectorImage->setPixmap( selectorPixmap );

   531     mSelectorImage->setZValue( FrequencyStrip::SELECTOR_Z_POS );

   532 }

   533 

   534 /*!

   535  *

   536  */

   537 void RadioFrequencyStripBase::initPositions()

   538 {

   539     int prevPos = 0;

   540     int nextPos = 0;

   541     const int lastPos = mFrequencies.value( mMaxFrequency ).mPosition;

   542     for ( int i = mFrequencies.value( mMinFrequency ).mPosition; i < lastPos; ++i ) {

   543         if ( mPositions.contains( i ) ) {

   544             prevPos = i;

   545             const uint freq = mPositions.value( prevPos ) + mFrequencyStepSize;

   546             if ( mFrequencies.contains( freq ) ) {

   547                 nextPos = mFrequencies.value( freq ).mPosition;

   548             } else {

   549                 nextPos = prevPos;

   550             }

   551         } else {

   552             const int nearestHit = ( i - prevPos ) < ( nextPos - i ) ? prevPos : nextPos;

   553             mPositions.insert( i, mPositions.value( nearestHit ) );

   554         }

   555     }

   556 }

   557 

   558 /*!

   559  *

   560  */

   561 void RadioFrequencyStripBase::initButtons()

   562 {

   563     Q_ASSERT( mLeftButton && mRightButton );

   564     connectAndCheck( mLeftButton,    SIGNAL(clicked()),

   565                      this,           SLOT(handleLeftButton()) );

   566     connectAndCheck( mRightButton,   SIGNAL(clicked()),

   567                      this,           SLOT(handleRightButton()) );

   568     connectAndCheck( mLeftButton,    SIGNAL(longPress(QPointF)),

   569                      this,           SLOT(handleLongLeftButton()) );

   570     connectAndCheck( mRightButton,   SIGNAL(longPress(QPointF)),

   571                      this,           SLOT(handleLongRightButton()) );

   572 

   573     mLeftButton->setZValue( FrequencyStrip::SELECTOR_Z_POS );

   574     mLeftButton->setObjectName( FrequencyStrip::LEFT_BUTTON );

   575     mRightButton->setZValue( FrequencyStrip::SELECTOR_Z_POS );

   576     mRightButton->setObjectName( FrequencyStrip::RIGHT_BUTTON );

   577 

   578     const qreal height = size().height();

   579     const qreal width = size().width();

   580     mLeftButton->resize( height, height );

   581     mRightButton->resize( height, height );

   582     mRightButton->setPos( QPointF( width - height, 0 ) );

   583 

   584     // Add left button effects

   585     QStringList pathList;

   586     pathList << ":/effects/slide_to_left.fxml" << ":/effects/slide_from_left.fxml";

   587     QStringList eventList;

   588     eventList << FrequencyStrip::SLIDE_TO_LEFT << FrequencyStrip::SLIDE_FROM_LEFT;

   589     HbEffect::add( mLeftButton, pathList, eventList );

   590 

   591     // Add right button effects

   592     pathList.clear();

   593     pathList << ":/effects/slide_to_right.fxml" << ":/effects/slide_from_right.fxml";

   594     eventList.clear();

   595     eventList << FrequencyStrip::SLIDE_TO_RIGHT << FrequencyStrip::SLIDE_FROM_RIGHT;

   596     HbEffect::add( mRightButton, pathList, eventList );

   597 }

   598 

   599 /*!

   600  *

   601  */

   602 void RadioFrequencyStripBase::addFrequencyPos( int pos, uint frequency, RadioFrequencyItem* item )

   603 {

   604     mFrequencies.insert( frequency, FrequencyPos( pos, item ) );

   605     mPositions.insert( pos, frequency );

   606 }

   607 

   608 /*!

   609  *

   610  */

   611 void RadioFrequencyStripBase::updateStationsInRange( int first, int last, bool stationRemoved )

   612 {

   613     if ( !isScanning() ) {

   614         uint frequency = 0;

   615         for ( int i = first; i <= last; ++i ) {

   616             frequency = frequencyAtIndex( i );

   617             if ( mFrequencies.contains( frequency ) ) {

   618                 FrequencyPos pos = mFrequencies.value( frequency );

   619                 updateItem( pos.mItem, 0, stationRemoved ? frequency : 0 );

   620             }

   621         }

   622     }

   623 }

   624 

   625 /*!

   626  *

   627  */

   628 void RadioFrequencyStripBase::updateItem( RadioFrequencyItem* item, uint upperRange, uint ignoredFrequency )

   629 {

   630     if ( item ) {

   631         uint frequency = item->frequency();

   632         QList<FrequencyStrip::StationMarker> markers;

   633 

   634         if ( upperRange == 0 ) {

   635             upperRange = frequency + FrequencyStrip::HALF_HERTZ;

   636         }

   637 

   638         if ( isInitialized() ) {

   639             markers = stationsInRange( frequency - FrequencyStrip::HALF_HERTZ, upperRange );

   640             for ( int i = markers.count() - 1; ignoredFrequency > 0 && i >= 0; --i ) {

   641                 if ( markers[i].mFrequency == ignoredFrequency ) {

   642                     markers.removeAt( i );

   643                     break;

   644                 }

   645             }

   646         }

   647 

   648         QPixmap pixmap = drawPixmap( frequency, markers, item );

   649         item->setPixmap( pixmap );

   650 

   651         foreach ( const FrequencyStrip::StationMarker& marker, markers ) {

   652             FrequencyPos pos = mFrequencies.value( marker.mFrequency );

   653             mFrequencies.insert( marker.mFrequency, pos );

   654         }

   655     }

   656 }

   657 

   658 /*!

   659  *

   660  */

   661 void RadioFrequencyStripBase::updateAllItems()

   662 {

   663     foreach ( RadioFrequencyItem* item, mFrequencyItems ) {

   664         updateItem( item );

   665     }

   666 }

   667 

   668 /*!

   669  *

   670  */

   671 QPixmap RadioFrequencyStripBase::drawPixmap( uint frequency, QList<FrequencyStrip::StationMarker> stations, RadioFrequencyItem* item )

   672 {

   673     QPixmap pixmap( FrequencyStrip::PIXMAP_WIDTH, mItemHeight );

   674     pixmap.fill( Qt::transparent );

   675     QPainter painter( &pixmap );

   676     QPen normalPen = painter.pen();

   677     QPen favoritePen = normalPen;

   678     normalPen.setColor( mForegroundColor );

   679     painter.setPen( normalPen );

   680 

   681     if ( frequency == 0 ) {

   682         painter.drawLine( makeTab( mSeparatorPos - 1 + FrequencyStrip::ROUNDER, mItemHeight ) );

   683         painter.drawLine( makeTab( mSeparatorPos + FrequencyStrip::ROUNDER, mItemHeight ) );

   684         return pixmap;

   685     }

   686 

   687     const QString itemText = QString::number( frequency / FrequencyStrip::ONE_HERTZ );

   688     const uint startFrequency = frequency - FrequencyStrip::HALF_HERTZ;

   689     const uint endFrequency = startFrequency + FrequencyStrip::ONE_HERTZ;

   690     const uint  roundedMin = int( qreal(mMinFrequency) / FrequencyStrip::ONE_HERTZ + FrequencyStrip::ROUNDER );

   691     const uint freq = frequency / FrequencyStrip::ONE_HERTZ;

   692     const int diff = freq - roundedMin;

   693     const qreal startPixel = diff * FrequencyStrip::ITEM_WIDTH;

   694     qreal pixels = 0.0;

   695     const qreal leftOverlap = FrequencyStrip::PIXMAP_OVERLAP / 2;

   696 

   697     for ( uint frequency = startFrequency; frequency <= endFrequency; frequency += mFrequencyStepSize ) {

   698 

   699         if ( frequency < mMinFrequency || frequency > mMaxFrequency ) {

   700             continue;

   701         }

   702 

   703         pixels = qreal( frequency - startFrequency ) / FrequencyStrip::PIXEL_IN_HZ;

   704         if ( frequency % FrequencyStrip::ONE_HERTZ == 0 ) {

   705 

   706             // Draw the high frequency tab and the frequency text for the even number

   707             normalPen.setWidth( 3 );

   708             painter.setPen( normalPen );

   709             painter.drawLine( makeTab( pixels + leftOverlap - 1, FrequencyStrip::TAB_HEIGHT_BIG ) );

   710             normalPen.setWidth( 1 );

   711             painter.setPen( normalPen );

   712 

   713             // Draw the frequency text and its 00 decimals

   714             painter.setFont( FrequencyStrip::DECIMAL_FONT );

   715             const int decimalWidth = painter.fontMetrics().width( FrequencyStrip::DECIMAL_TEXT );

   716             const int decimalSpace = painter.fontMetrics().leftBearing( '.' );

   717             painter.setFont( FrequencyStrip::FREQUENCY_FONT );

   718             const int frequencyWidth = painter.fontMetrics().width( itemText );

   719             const int textPosX = int( pixels + leftOverlap - ( frequencyWidth + decimalSpace + decimalWidth ) / 2 );

   720             painter.drawText( QPoint( textPosX, FrequencyStrip::FREQUENCY_TEXT_Y_POS ), itemText );

   721             painter.setFont( FrequencyStrip::DECIMAL_FONT );

   722             painter.drawText( QPoint( textPosX + frequencyWidth + decimalSpace, FrequencyStrip::FREQUENCY_TEXT_Y_POS ), FrequencyStrip::DECIMAL_TEXT );

   723 

   724         } else if ( frequency % FrequencyStrip::ONE_TAB_IN_HZ == 0 ) {

   725 

   726             // Draw the low frequency tab for the uneven number

   727             painter.drawLine( makeTab( pixels + leftOverlap, FrequencyStrip::TAB_HEIGHT_SMALL ) );

   728 

   729         }

   730 

   731         addFrequencyPos( int( startPixel + pixels + FrequencyStrip::ROUNDER ), frequency, item );

   732     }

   733 

   734     // Draw favorites and local stations

   735     favoritePen.setColor( Qt::yellow );

   736 

   737     foreach ( const FrequencyStrip::StationMarker& station, stations ) {

   738         const uint frequency = station.mFrequency;

   739         pixels = qreal( frequency - startFrequency ) / FrequencyStrip::PIXEL_IN_HZ;

   740 

   741         if ( station.mIsFavorite ) {

   742             favoritePen.setWidth( FrequencyStrip::PEN_WIDTH_FAVORITE );

   743             painter.setPen( favoritePen );

   744             painter.drawEllipse( int( pixels + leftOverlap - 3 ), FrequencyStrip::STATION_MARKER_Y_POS - 3, 6, 6 );

   745         } else {

   746             favoritePen.setWidth( 1 );

   747             painter.setPen( favoritePen );

   748             painter.drawEllipse( int( pixels + leftOverlap - 4 ), FrequencyStrip::STATION_MARKER_Y_POS - 4, 8, 8 );

   749         }

   750     }

   751 

   752     return pixmap;

   753 }

   754 

   755 /*!

   756  *

   757  */

   758 QLineF RadioFrequencyStripBase::makeTab( qreal pos, int height )

   759 {

   760     return QLineF( pos, mItemHeight - height, pos, mItemHeight );

   761 }

   762 

   763 /*!

   764  *

   765  */

   766 int RadioFrequencyStripBase::selectorPos() const

   767 {

   768     const int pos = int( -contentWidget()->x() + mSelectorPos + FrequencyStrip::ROUNDER );

   769     return pos % mMaxWidth;

   770 }

   771 

   772 /*!

   773  *

   774  */

   775 void RadioFrequencyStripBase::scrollToFrequency( uint frequency, Scroll::Direction direction, int time )

   776 {

   777     int targetFreqPos = mFrequencies.value( frequency ).mPosition;

   778     const int currentFreqPos = mFrequencies.value( mFrequency ).mPosition;

   779     const int currentPos = int( -contentWidget()->x() + mSelectorPos + FrequencyStrip::ROUNDER );

   780     const bool isInSecondHalf = currentPos >= mMaxWidth - FrequencyStrip::ITEM_WIDTH + mSeparatorPos;

   781 

   782     // Special case: When there is only one favorite and the user presses skip

   783     // the strip must scroll around to the same frequency.

   784     if ( mFrequency == frequency && direction != Scroll::Shortest ) {

   785         if ( direction == Scroll::Left ) {

   786             targetFreqPos += mMaxWidth;

   787         } else {

   788             targetFreqPos -= mMaxWidth;

   789         }

   790     }

   791 

   792     mFrequency = frequency;

   793 

   794     qreal newPos = targetFreqPos;

   795     if ( direction == Scroll::Left ) {

   796 

   797         if ( currentFreqPos > targetFreqPos ) {

   798             newPos += mMaxWidth;

   799         }

   800 

   801     } else if ( direction == Scroll::Right ) {

   802 

   803         if ( currentFreqPos < targetFreqPos ) {

   804             newPos -= mMaxWidth;

   805         }

   806 

   807     }

   808 

   809     if ( isInSecondHalf ) {

   810         newPos += mMaxWidth;

   811     }

   812 

   813     newPos -= mSelectorPos - FrequencyStrip::ROUNDER;

   814 

   815 //    scrollContentsTo( QPointF( newPos, 0 ), time );

   816 // TODO: Remove this and uncomment the above line. This is a temporary workaround to get the strip to move

   817     scrollContentsTo( QPointF( newPos, 0 ), 0 );

   818 }

   819 

   820 /*!

   821  *

   822  */

   823 void RadioFrequencyStripBase::hideButtons()

   824 {

   825     HbEffect::start( mLeftButton, FrequencyStrip::SLIDE_TO_LEFT );

   826     HbEffect::start( mRightButton, FrequencyStrip::SLIDE_TO_RIGHT );

   827 }

   828 

   829 /*!

   830  *

   831  */

   832 void RadioFrequencyStripBase::showButtons()

   833 {

   834     HbEffect::start( mLeftButton, FrequencyStrip::SLIDE_FROM_LEFT );

   835     HbEffect::start( mRightButton, FrequencyStrip::SLIDE_FROM_RIGHT );

   836 }