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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifndef RADIOFREQUENCYSTRIPBASE_H
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#define RADIOFREQUENCYSTRIPBASE_H
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// System includes
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#include <QMap>
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#include <QHash>
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#include <HbEffect>
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#include <QColor>
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// User includes
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#include "radiostripbase.h"
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#include "radiofrequencystripdef.h"
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// Forward declarations
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class RadioFrequencyItem;
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class HbPushButton;
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class QTimer;
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class QModelIndex;
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class HbDocumentLoader;
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// Class declaration
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class RadioFrequencyStripBase : public RadioStripBase
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{
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Q_OBJECT
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Q_PROPERTY(int itemHeight READ itemHeight WRITE setItemHeight)
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Q_PROPERTY(uint frequency READ frequency)
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friend class RadioFrequencyItem;
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public:
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RadioFrequencyStripBase( QGraphicsItem* parent = 0 );
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void setItemHeight( int itemHeight );
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int itemHeight() const;
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void initbase( uint minFrequency, uint maxFrequency, uint stepSize, uint frequency );
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void createButtonsFromDocml( HbDocumentLoader& uiLoader, const QString& leftButtonName, const QString& rightButtonName );
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void createButtons();
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virtual void setFrequency( const uint frequency, int reason, Scroll::Direction direction = Scroll::Shortest );
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uint frequency() const;
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bool isInManualSeekMode() const;
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void cancelManualSeek();
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void addScannedStation( uint frequency );
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void updateFavorite( uint frequency );
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public slots:
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void setScanningMode( bool isScanning );
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signals:
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void manualSeekChanged( bool manualSeek );
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private slots:
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void initEmptyItems();
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void removeStation( const QModelIndex& parent, int first, int last );
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void updateStation( const QModelIndex& parent, int first, int last );
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void handleLeftButton();
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void handleRightButton();
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void handleLongLeftButton();
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void handleLongRightButton();
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void toggleManualSeek();
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void handleScrollingEnd();
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private:
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// from base class RadioStripBase
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void updateItemPrimitive( QGraphicsItem* itemToUpdate, int itemIndex );
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QGraphicsItem* createItemPrimitive( QGraphicsItem *parent );
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void scrollPosChanged();
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// from base class QGraphicsWidget
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void resizeEvent ( QGraphicsSceneResizeEvent* event );
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// void showEvent( QShowEvent* event );
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void changeEvent( QEvent* event );
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// from base class HbScrollArea
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void mousePressEvent( QGraphicsSceneMouseEvent* event );
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void mouseReleaseEvent( QGraphicsSceneMouseEvent* event );
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void gestureEvent( QGestureEvent* event );
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// from base class QObject
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void timerEvent( QTimerEvent* event );
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// New functions
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virtual bool isInitialized() const = 0;
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virtual QList<FrequencyStrip::StationMarker> stationsInRange( uint minFrequency, uint maxFrequency ) const = 0;
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virtual void emitFrequencyChanged( uint frequency, int reason, int direction ) = 0;
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virtual void skipToPrevious() = 0;
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virtual void skipToPreviousFavorite() = 0;
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virtual void skipToNext() = 0;
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virtual void skipToNextFavorite() = 0;
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virtual void seekDown() = 0;
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virtual void seekUp() = 0;
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virtual bool isScanning() const = 0;
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virtual uint frequencyAtIndex( int index ) const = 0;
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void initModel();
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void initSelector();
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void initPositions();
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void initButtons();
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void addFrequencyPos( int pos, uint frequency, RadioFrequencyItem* item );
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void updateStationsInRange( int first, int last, bool stationRemoved = false );
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void updateItem( RadioFrequencyItem* item, uint upperRange = 0, uint ignoredFrequency = 0 );
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void updateAllItems();
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QPixmap drawPixmap( uint frequency, QList<FrequencyStrip::StationMarker> stations, RadioFrequencyItem* item );
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QLineF makeTab( qreal pos, int height );
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int selectorPos() const;
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void scrollToFrequency( uint frequency,
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Scroll::Direction direction = Scroll::Shortest,
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int time = 0 );
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void hideButtons();
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void showButtons();
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private: // data
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class FrequencyPos
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{
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public:
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explicit FrequencyPos( int pos, RadioFrequencyItem* item ) :
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mPosition( pos ),
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mItem( item ) {}
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FrequencyPos() :
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mPosition( 0 ),
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mItem( 0 ) {}
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int mPosition;
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RadioFrequencyItem* mItem;
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};
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int mItemHeight;
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uint mMinFrequency;
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uint mMaxFrequency;
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uint mFrequencyStepSize;
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uint mFrequency;
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QGraphicsPixmapItem* mSelectorImage;
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qreal mSeparatorPos;
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short mMaxWidth;
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qreal mSelectorPos;
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QList<RadioFrequencyItem*> mFrequencyItems;
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/**
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* Container to help map a frequency to strip position and additional information about the frequency.
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* In the default region contains an item for every valid frequency from 87.50 Mhz to 108.00 Mhz with
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* stepsize 50 Khz which amounts to 410 items.
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*/
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QMap<uint,FrequencyPos> mFrequencies;
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/**
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* Container to help map strip position to frequency.
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* It is queried every time the strip moves so the lookup time needs to be fast. QHash is used because
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* it offers the fastest lookup time of any other QT container. QHash stores the items in arbitrary
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* order so we must never try to loop through them and assume they are in any particular order.
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*/
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QHash<int,uint> mPositions;
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HbPushButton* mLeftButton;
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HbPushButton* mRightButton;
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QTimer* mManualSeekTimer;
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bool mManualSeekMode;
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uint mLastReportedFrequency;
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int mManualSeekTimerId;
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QColor mForegroundColor;
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};
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#endif // RADIOFREQUENCYSTRIPBASE_H
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