--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/radioapp/radiowidgets/inc/radiofrequencystrip.h Fri Mar 19 09:29:04 2010 +0200
@@ -0,0 +1,216 @@
+/*
+* 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 FREQUENCYSTRIP_H
+#define FREQUENCYSTRIP_H
+
+// System includes
+#include <qmap>
+#include <qhash>
+#include <hbicon.h>
+#include <hbeffect.h>
+
+// User includes
+#include "radiostripbase.h"
+#include "radio_global.h"
+
+// Forward declarations
+class RadioUiEngine;
+class RadioFrequencyItem;
+class RadioStation;
+class HbPushButton;
+class QTimer;
+
+const int KOneHertz = KFrequencyMultiplier;
+const int KHalfHertz = KOneHertz / 2;
+const int KOneTabDistance = 15;
+const uint KOneTabInHz = 0.2 * KOneHertz;
+const qreal KPixelInHz = KOneTabInHz / KOneTabDistance;
+//const int KCharWidth = 8; // TODO: Remove hardcoding
+const int KWidth = KOneTabDistance * 5;
+const int KHeight = 50; //TODO: Remove hardcoding
+
+// Class declaration
+class RadioFrequencyStrip : public RadioStripBase
+{
+ Q_OBJECT
+ Q_PROPERTY( HbIcon leftButtonIcon READ leftButtonIcon WRITE setLeftButtonIcon )
+ Q_PROPERTY( HbIcon rightButtonIcon READ rightButtonIcon WRITE setRightButtonIcon )
+
+ friend class RadioFrequencyItem;
+
+public:
+
+ RadioFrequencyStrip( uint minFrequency,
+ uint maxFrequency,
+ uint stepSize,
+ uint currentFrequency,
+ RadioUiEngine* engine = 0 );
+
+ void setLeftButtonIcon( const HbIcon& leftButtonIcon );
+ HbIcon leftButtonIcon() const;
+
+ void setRightButtonIcon( const HbIcon& rightButtonIcon );
+ HbIcon rightButtonIcon() const;
+
+ uint frequency( bool* favorite = 0 ) const;
+
+ void connectLeftButton( const char* signal, QObject* receiver, const char* slot );
+ void connectRightButton( const char* signal, QObject* receiver, const char* slot );
+
+
+
+public slots:
+
+ void favoriteChanged( const RadioStation& station );
+ void setFrequency( const uint frequency, int commandSender = 0 );
+
+signals:
+
+ void frequencyChanged( uint frequency, int sender ); // sender is always CommandSender::RadioFrequencyStrip
+ void frequencyIsFavorite( bool favorite );
+ void swipedLeft();
+ void swipedRight();
+
+private slots:
+
+ void leftGesture( int speedPixelsPerSecond );
+ void rightGesture( int speedPixelsPerSecond );
+ void panGesture( const QPointF& point );
+ void toggleButtons();
+
+private:
+
+// from base class RadioStripBase
+
+ void updateItemPrimitive( QGraphicsItem* itemToUpdate, int itemIndex );
+ QGraphicsItem* createItemPrimitive( QGraphicsItem *parent );
+ void scrollPosChanged( QPointF newPosition );
+
+// from base class QGraphicsWidget
+
+ void resizeEvent ( QGraphicsSceneResizeEvent* event );
+ void showEvent( QShowEvent* event );
+
+// from base class HbScrollArea
+
+ void mousePressEvent( QGraphicsSceneMouseEvent* event );
+ void mouseReleaseEvent( QGraphicsSceneMouseEvent* event );
+
+// virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
+
+// New functions
+
+ void initModel();
+
+ void initSelector();
+
+ void initItems();
+
+ void initButtons();
+
+ void addFrequencyPos( int pos, uint frequency, RadioFrequencyItem* item );
+
+ void updateFavorites( RadioFrequencyItem* item );
+
+ QPixmap drawPixmap( uint frequency, QList<RadioStation> stations, RadioFrequencyItem* item );
+
+ void emitFrequencyChanged( uint frequency );
+
+ void emitFavoriteSelected( bool favoriteSelected );
+
+ int selectorPos() const;
+
+ void scrollToFrequency( uint frequency, int time = 0 );
+
+private: // data
+
+ class FrequencyPos
+ {
+ public:
+ explicit FrequencyPos( int pos, bool favorite, bool localStation, RadioFrequencyItem* item ) :
+ mPosition( pos ),
+ mFavorite( favorite ),
+ mLocalStation( localStation ),
+ mItem( item ) {}
+
+
+ FrequencyPos() :
+ mPosition( 0 ),
+ mFavorite( false ),
+ mLocalStation( false ),
+ mItem( 0 ) {}
+
+ int mPosition;
+ bool mFavorite;
+ bool mLocalStation;
+ RadioFrequencyItem* mItem;
+
+ };
+
+ uint mMinFrequency;
+
+ uint mMaxFrequency;
+
+ uint mFrequencyStepSize;
+
+ RadioUiEngine* mEngine;
+
+ QGraphicsPixmapItem* mSelectorImage;
+
+ qreal mSeparatorPos;
+
+ short mMaxWidth;
+
+ qreal mSelectorPos;
+
+ uint mFrequency;
+
+ QList<RadioFrequencyItem*> mFrequencyItems;
+
+ bool mFavoriteSelected;
+
+ /**
+ * 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;
+
+ HbIcon mLeftButtonIcon;
+
+ HbIcon mRightButtonIcon;
+
+ HbPushButton* mLeftButton;
+
+ HbPushButton* mRightButton;
+
+ QTimer* mButtonTimer;
+
+ bool mIsPanGesture;
+
+};
+
+#endif // FREQUENCYSTRIP_H