examples/SFExamples/TiltMe/src/TiltMeAppView.cpp

/*
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Description:  Application view implementation
*/ 


// INCLUDE FILES
#include <coemain.h>
#include "TiltMeAppView.h"
#include <aknnotewrappers.h>


// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------
// CTiltMeAppView::NewL()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CTiltMeAppView* CTiltMeAppView::NewL( const TRect& aRect )
        {
        CTiltMeAppView* self = CTiltMeAppView::NewLC( aRect );
        CleanupStack::Pop( self );
        return self;
        }

// -----------------------------------------------------------------------------
// CTiltMeAppView::NewLC()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CTiltMeAppView* CTiltMeAppView::NewLC( const TRect& aRect )
        {
        CTiltMeAppView* self = new ( ELeave ) CTiltMeAppView;
        CleanupStack::PushL( self );
        self->ConstructL( aRect );
        return self;
        }

// -----------------------------------------------------------------------------
// CTiltMeAppView::ConstructL()
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CTiltMeAppView::ConstructL( const TRect& aRect )
        {
        // Create a window for this application view
        CreateWindowL();

        // Set the windows size
        SetRect( aRect );

        // Activate the window, which makes it ready to be drawn
        ActivateL();
        
        // Construtig the time objects
        iFirst = TTime();
    iSecond = TTime();
    // Setting the initial time
    iFirst.HomeTime();
        }

// -----------------------------------------------------------------------------
// CTiltMeAppView::CTiltMeAppView()
// C++ default constructor can NOT contain any code, that might leave.
// -----------------------------------------------------------------------------
//
CTiltMeAppView::CTiltMeAppView() : iSensorFound(EFalse)
        {
        // No implementation required
        }


// -----------------------------------------------------------------------------
// CTiltMeAppView::~CTiltMeAppView()
// Destructor.
// -----------------------------------------------------------------------------
//
CTiltMeAppView::~CTiltMeAppView()
        {
        StopSensor();
        delete iAccSensor;
        }


// -----------------------------------------------------------------------------
// CTiltMeAppView::Draw()
// Draws the display.
// -----------------------------------------------------------------------------
//
void CTiltMeAppView::Draw( const TRect& /*aRect*/ ) const
        {
        // Get the standard graphics context
        CWindowGc& gc = SystemGc();
        // Gets the control's extent
        TRect drawRect( Rect());
        // Clears the screen
        gc.Clear( drawRect );
        
        if( iSensorFound )
                {
                const CFont* fontUsed = CEikonEnv::Static()->LegendFont();
                gc.UseFont(fontUsed);
                gc.SetPenColor(KRgbBlack);
                
                // Draw the acceleration values in all directions
                TBuf<35> values;
                values.Format(_L("X:  %d  Y:  %d  Z:  %d"), iXAccl, iYAccl, iZAccl);            
                gc.DrawText(values, TPoint(15,15));

                //
                // Draw the direction arrow
                //
                // Find the screen center point
                TPoint screenCenter = Rect().iBr;
                screenCenter.iX >>= 1;
                screenCenter.iY >>= 1;

                // Draw the poiting arrow
                gc.SetPenSize(TSize(8,8));
                gc.SetPenStyle(CGraphicsContext::ESolidPen);
                gc.SetPenColor(KRgbRed);
                gc.DrawLine( screenCenter, (screenCenter-TPoint( (TInt)(iYAccl*0.1), (TInt)(iXAccl*0.1) )) );

                // Draw the center pivot point
                gc.SetPenStyle(CGraphicsContext::ENullPen);
                gc.SetBrushColor(KRgbDarkGreen);
                gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
                gc.DrawEllipse( TRect( (screenCenter-TPoint(8,8)), (screenCenter+TPoint(10,10)) ) );
                
                gc.DiscardFont();
                }
        }


// -----------------------------------------------------------------------------
// CTiltMeAppView::SizeChanged()
// Called by framework when the view size is changed.
// -----------------------------------------------------------------------------
//
void CTiltMeAppView::SizeChanged()
        {  
        DrawNow();
        }


// -----------------------------------------------------------------------------
// CTiltMeAppView::HandleDataEventL( TRRSensorInfo aSensor, 
//                                                                                               TRRSensorEvent aEvent )
//
// -----------------------------------------------------------------------------
//
void CTiltMeAppView::HandleDataEventL( TRRSensorInfo /*aSensor*/, 
                                                                           TRRSensorEvent aEvent )
        {
    iSecond.HomeTime();
    // Find the interval from the second time to the first
        TTimeIntervalMicroSeconds interv = iSecond.MicroSecondsFrom(iFirst);
    TInt64 i = interv.Int64();
    if(i >= 100000)
        {
        iXAccl = aEvent.iSensorData1;
        iYAccl = aEvent.iSensorData2;
        iZAccl = aEvent.iSensorData3;
        // Reset the first time to the current one.     
        iFirst.HomeTime();
        // Update the screen
        DrawNow();
        }
        }



// -----------------------------------------------------------------------------
// CTiltMeAppView::StartSensor()
// -----------------------------------------------------------------------------
//
void CTiltMeAppView::StartSensor()
        {
        // If the sensor is initially not found
        if( !iSensorFound )
                {
                // Get list of available sensors (if any)
                RArray <TRRSensorInfo> sensorsList;
                CRRSensorApi::FindSensorsL( sensorsList );
        
                //Number of sensors available
                TInt count = sensorsList.Count();
        
                for( TInt i = 0 ; i != count ; ++i )
                    {
                    // If the ID matches Nokia 5500
                    if( sensorsList[i].iSensorId == 0x10273024 )        // 0x303E sensor ID for N95 
                        {
                        // Use the sensor found
                        iAccSensor = CRRSensorApi::NewL( sensorsList[i] );
                        // Register the sensor for our app
                        iAccSensor->AddDataListener( this );
                                iSensorFound = ETrue;
                                return;
                        }
                        }
                
                // If we reach here that means we could not find a sensor.
                CAknInformationNote* note3 = new (ELeave) CAknInformationNote();
                CleanupStack::PushL(note3);
                note3->ExecuteLD(_L("No 3D sensor could be found!"));
                CleanupStack::Pop();
                }
        }


// -----------------------------------------------------------------------------
// CTiltMeAppView::StopSensor()
// -----------------------------------------------------------------------------
//
void CTiltMeAppView::StopSensor()
        {
        // If the sensor has been registered
        if( iSensorFound )
                {
                iAccSensor->RemoveDataListener();
                iSensorFound = EFalse;
                // Clean up
                delete iAccSensor;
                iAccSensor = NULL;
                }
        }


// End of File

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