--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/radioapp/radiowidgets/inc/radiofrequencystripbase.h Tue Aug 31 15:15:02 2010 +0300
@@ -0,0 +1,224 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#ifndef RADIOFREQUENCYSTRIPBASE_H
+#define RADIOFREQUENCYSTRIPBASE_H
+
+// System includes
+#include <QMap>
+#include <QHash>
+#include <HbEffect>
+#include <QColor>
+
+// User includes
+#include "radiostripbase.h"
+#include "radiofrequencystripdef.h"
+
+// Forward declarations
+class RadioFrequencyItem;
+class HbPushButton;
+class QTimer;
+class QModelIndex;
+class HbDocumentLoader;
+
+// Class declaration
+class RadioFrequencyStripBase : public RadioStripBase
+{
+ Q_OBJECT
+ Q_PROPERTY(int itemHeight READ itemHeight WRITE setItemHeight)
+ Q_PROPERTY(uint frequency READ frequency)
+
+ friend class RadioFrequencyItem;
+
+public:
+
+ RadioFrequencyStripBase( QGraphicsItem* parent = 0 );
+
+ void setItemHeight( int itemHeight );
+ int itemHeight() const;
+
+ void initbase( uint minFrequency, uint maxFrequency, uint stepSize, uint frequency );
+ void createButtonsFromDocml( HbDocumentLoader& uiLoader, const QString& leftButtonName, const QString& rightButtonName );
+ void createButtons();
+
+ virtual void setFrequency( const uint frequency, int reason, Scroll::Direction direction = Scroll::Shortest );
+ uint frequency() const;
+
+ bool isInManualSeekMode() const;
+ void cancelManualSeek();
+
+ void addScannedStation( uint frequency );
+
+ void updateFavorite( uint frequency );
+
+public slots:
+
+ void setScanningMode( bool isScanning );
+
+signals:
+
+ void manualSeekChanged( bool manualSeek );
+
+private slots:
+
+ void initEmptyItems();
+ void removeStation( const QModelIndex& parent, int first, int last );
+ void updateStation( const QModelIndex& parent, int first, int last );
+ void handleLeftButton();
+ void handleRightButton();
+ void handleLongLeftButton();
+ void handleLongRightButton();
+ void toggleManualSeek();
+ void handleScrollingEnd();
+
+private:
+
+// from base class RadioStripBase
+
+ void updateItemPrimitive( QGraphicsItem* itemToUpdate, int itemIndex );
+ QGraphicsItem* createItemPrimitive( QGraphicsItem *parent );
+ void scrollPosChanged();
+
+// from base class QGraphicsWidget
+
+ void resizeEvent ( QGraphicsSceneResizeEvent* event );
+// void showEvent( QShowEvent* event );
+ void changeEvent( QEvent* event );
+
+// from base class HbScrollArea
+
+ void mousePressEvent( QGraphicsSceneMouseEvent* event );
+ void mouseReleaseEvent( QGraphicsSceneMouseEvent* event );
+ void gestureEvent( QGestureEvent* event );
+
+// from base class QObject
+
+ void timerEvent( QTimerEvent* event );
+
+// New functions
+
+ virtual bool isInitialized() const = 0;
+ virtual QList<FrequencyStrip::StationMarker> stationsInRange( uint minFrequency, uint maxFrequency ) const = 0;
+ virtual void emitFrequencyChanged( uint frequency, int reason, int direction ) = 0;
+ virtual void skipToPrevious() = 0;
+ virtual void skipToPreviousFavorite() = 0;
+ virtual void skipToNext() = 0;
+ virtual void skipToNextFavorite() = 0;
+ virtual void seekDown() = 0;
+ virtual void seekUp() = 0;
+ virtual bool isScanning() const = 0;
+ virtual uint frequencyAtIndex( int index ) const = 0;
+
+ void initModel();
+
+ void initSelector();
+
+ void initPositions();
+
+ void initButtons();
+
+ void addFrequencyPos( int pos, uint frequency, RadioFrequencyItem* item );
+
+ void updateStationsInRange( int first, int last, bool stationRemoved = false );
+
+ void updateItem( RadioFrequencyItem* item, uint upperRange = 0, uint ignoredFrequency = 0 );
+
+ void updateAllItems();
+
+ QPixmap drawPixmap( uint frequency, QList<FrequencyStrip::StationMarker> stations, RadioFrequencyItem* item );
+
+ QLineF makeTab( qreal pos, int height );
+
+ int selectorPos() const;
+
+ void scrollToFrequency( uint frequency,
+ Scroll::Direction direction = Scroll::Shortest,
+ int time = 0 );
+
+ void hideButtons();
+ void showButtons();
+
+private: // data
+
+ class FrequencyPos
+ {
+ public:
+ explicit FrequencyPos( int pos, RadioFrequencyItem* item ) :
+ mPosition( pos ),
+ mItem( item ) {}
+
+ FrequencyPos() :
+ mPosition( 0 ),
+ mItem( 0 ) {}
+
+ int mPosition;
+ RadioFrequencyItem* mItem;
+
+ };
+
+ int mItemHeight;
+
+ uint mMinFrequency;
+
+ uint mMaxFrequency;
+
+ uint mFrequencyStepSize;
+
+ uint mFrequency;
+
+ QGraphicsPixmapItem* mSelectorImage;
+
+ qreal mSeparatorPos;
+
+ short mMaxWidth;
+
+ qreal mSelectorPos;
+
+ QList<RadioFrequencyItem*> mFrequencyItems;
+
+ /**
+ * Container to help map a frequency to strip position and additional information about the frequency.
+ * In the default region contains an item for every valid frequency from 87.50 Mhz to 108.00 Mhz with
+ * stepsize 50 Khz which amounts to 410 items.
+ */
+ QMap<uint,FrequencyPos> mFrequencies;
+
+ /**
+ * Container to help map strip position to frequency.
+ * It is queried every time the strip moves so the lookup time needs to be fast. QHash is used because
+ * it offers the fastest lookup time of any other QT container. QHash stores the items in arbitrary
+ * order so we must never try to loop through them and assume they are in any particular order.
+ */
+ QHash<int,uint> mPositions;
+
+ HbPushButton* mLeftButton;
+
+ HbPushButton* mRightButton;
+
+ QTimer* mManualSeekTimer;
+
+ bool mManualSeekMode;
+
+ uint mLastReportedFrequency;
+
+ int mManualSeekTimerId;
+
+ QColor mForegroundColor;
+
+};
+
+#endif // RADIOFREQUENCYSTRIPBASE_H