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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 FREQUENCYSTRIP_H
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#define FREQUENCYSTRIP_H
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// System includes
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#include <QMap>
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#include <QHash>
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#include <HbIcon>
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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 "radio_global.h"
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#include "radiowidgetsexport.h"
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// Forward declarations
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class RadioUiEngine;
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class RadioFrequencyItem;
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class RadioStation;
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class HbPushButton;
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class QTimer;
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class QModelIndex;
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// Class declaration
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class WIDGETS_DLL_EXPORT RadioFrequencyStrip : public RadioStripBase
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{
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Q_OBJECT
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Q_PROPERTY( HbIcon leftButtonIcon READ leftButtonIcon WRITE setLeftButtonIcon )
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Q_PROPERTY( HbIcon rightButtonIcon READ rightButtonIcon WRITE setRightButtonIcon )
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friend class RadioFrequencyItem;
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public:
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RadioFrequencyStrip();
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void setLeftButtonIcon( const HbIcon& leftButtonIcon );
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HbIcon leftButtonIcon() const;
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void setRightButtonIcon( const HbIcon& rightButtonIcon );
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HbIcon rightButtonIcon() const;
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void init( RadioUiEngine* engine );
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void setFrequency( const uint frequency, int reason = 0 );
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uint frequency() const;
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public slots:
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void updateFavorite( const RadioStation& station );
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void setScanningMode( bool isScanning );
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signals:
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void frequencyChanged( uint frequency, int reason ); // reason is always CommandSender::RadioFrequencyStrip
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void skipRequested( int skipMode );
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void seekRequested( int seekDirection );
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private slots:
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void updateStation( const QModelIndex& parent, int first, int last );
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void initEmptyItems();
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void handleLeftButton();
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void handleLongLeftButton();
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void handleRightButton();
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void handleLongRightButton();
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void toggleButtons();
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void checkIllegalPos();
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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( QPointF newPosition );
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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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// New functions
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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 updateFavorites( RadioFrequencyItem* item );
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void updateItems();
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QPixmap drawPixmap( uint frequency, QList<RadioStation> stations, RadioFrequencyItem* item );
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void emitFrequencyChanged( uint frequency );
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int selectorPos() const;
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void scrollToFrequency( uint frequency, 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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RadioUiEngine* mUiEngine;
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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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HbIcon mLeftButtonIcon;
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HbIcon mRightButtonIcon;
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HbPushButton* mLeftButton;
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HbPushButton* mRightButton;
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QTimer* mButtonTimer;
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bool mButtonsVisible;
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bool mUserIsScrolling;
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QColor mForegroundColor;
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};
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#endif // FREQUENCYSTRIP_H
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