camtimer.cpp

symbian s60 2nd下的手机定时拍照

    bmp = NULL;
    }

/*
-------------------------------------------------------------------------------

    SaveImageL();

    Description: Save an image. This function starts an asynchronous series of
                 functions to save the image into a file.

    Return value: N/A

-------------------------------------------------------------------------------
*/

void CCamTimerFormView::SaveImageL()
    {

	// Delete old thumb nail-file
	RFs fsSession;
	User::LeaveIfError(fsSession.Connect());

	CFileMan* fileMan = CFileMan::NewL(fsSession);
    CleanupStack::PushL(fileMan);

	fileMan->Delete(KThumbnailFilename,0);
	
	CleanupStack::PopAndDestroy(); // FileMan
    fsSession.Close();

    // Be sure that we have an image to be saved  
    if(iContainer->iImageReady)
        {
        // gets path where to save the image
        TFileName newFilePathAndName(KCamTimerFilename);
        // Create Format and Codec
		// quality factor from 0 to 100 (55 used here)
        iFormat->iSettings.iQualityFactor = KJpgSavingQualityFactor; 
        iFormat->iSettings.iSampleScheme = 
			TMdaJpgSettings::TColorSampling(TMdaJpgSettings::EColor420);

        TMdaPackage* codec = NULL;
        CleanupStack::PushL(codec);

        // create a file to save the image into
        // this is done in an asynch function
        iFileSaver->CreateL( newFilePathAndName, iFormat, codec, NULL );

		// set flag, can't take new pictures when saving
        iSavingImage = ETrue; 

		// codec
        CleanupStack::PopAndDestroy(1); 
      
		// increase the "index" by one (not used for anything at the moment)
        iCurrentImage++; 
        }
    }

/*
-------------------------------------------------------------------------------

    MiuoCreateComplete();

    Description: This function is called when the asynch. function 
                 iFileSaver->CreateL() completes. The error value tells if the
                 creation was successful. If it was, we have created a file
                 into which we can now save the image.

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerFormView::MiuoCreateComplete(TInt aError)
    {
    if (( aError == KErrNone) && iFileSaver)
        {
        TRAP( aError, iFileSaver->ConvertL(*(iContainer->GetBmpForSaving()), 
			TRect(0,0,0,0), 0));
        }
    else 
        {
        User::Leave(aError);
        }
    }

/*
-------------------------------------------------------------------------------

    MiuoConvertComplete();

    Description: This function is called when the asynch. function 
                 iFileSaver->ConvertL() completes. Now the image saving has
                 completed.

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerFormView::MiuoConvertComplete(TInt /*aError*/)       
    {
	// set flag, can take new pictures 
    iSavingImage = EFalse;
    }

/*
-------------------------------------------------------------------------------

    MiuoOpenComplete();

    Description: From MMdaImageUtilObserver, implement this if you use this 
                 observer to open a imagefile.

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerFormView::MiuoOpenComplete(TInt /*aError*/)
    {
    }



//
// CCamTimerDialog class
// 

/*
-------------------------------------------------------------------------------

    CCamTimerDialog(TInt& aValue)

    Description: C++ Constructor.

    Return value: N/A

-------------------------------------------------------------------------------
*/

// C++ constructor, initialize data
CCamTimerDialog::CCamTimerDialog(TInt& aValue)                      
    : iEditorValue(&aValue) 
    {
    }

/*
-------------------------------------------------------------------------------

    PreLayoutDynInitL()

    Description: Function for doing pre layout events.

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerDialog::PreLayoutDynInitL()
	{
	// Make sure that editor's value is inside valid range
    CheckEditorValue();
	}

/*
-------------------------------------------------------------------------------

    OkToExitL(TInt aButtonId)

    Description: Function for doing on exit events

    Return value: N/A

-------------------------------------------------------------------------------
*/

TBool CCamTimerDialog::OkToExitL(TInt aButtonId)
    {
    switch (aButtonId)
		{
		// If cancel is hit
		case EAknSoftkeyCancel:
			// Return ETrue and kill the dialog window
		    return ETrue;
            break;
		// If ok button is hit
        case EAknSoftkeyOk:
			// Get editor's value and set it to external variable
            *iEditorValue=((CEikNumberEditor*)Control(ECamTimerNumberEditor))->Number();
            return ETrue;
            break;
		// If any other key is hit
        default:
			// Return EFalse and do nothing else
            return EFalse;
            break;
        }
    }

/*
-------------------------------------------------------------------------------

    CheckEditorValue()

    Description: Checks that the editor value is within given minimum and maximum

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerDialog::CheckEditorValue()
    {
    TInt min=1;
    TInt max=20;
	// Get the editor
    CEikNumberEditor* editor=static_cast<CEikNumberEditor*>(Control(ECamTimerNumberEditor));
	// Check if value to be set to editor is too high.
	if(*iEditorValue<min)
		// Set value to the editor's maximum value.
        *iEditorValue=min;
	// Check if value to be set to editor is too low.
	if(*iEditorValue>max)
		// Set value to the editor's minimum value.
        *iEditorValue=max;
	// Set value to editor.
    editor->SetNumber(*iEditorValue);
    }


//
//  CCamTimerAppUi class
//

/*
-------------------------------------------------------------------------------

    CCamTimerAppUi(TInt& aValue)

    Description: C++ constructor

    Return value: N/A

-------------------------------------------------------------------------------
*/

CCamTimerAppUi::CCamTimerAppUi(TInt& aValue)
    : iWaitingTime(&aValue)
    {
    }
    
/*
-------------------------------------------------------------------------------

    ConstructL();

    Description: 2nd phase Constructor. Setting up attributes, construction
                 continues in CompleteConstructL() below.

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerAppUi::ConstructL()
    {
    BaseConstructL();

    // Averell view launching
    CCamTimerFormView* view=new(ELeave)CCamTimerFormView(iWaitingTime);
    CleanupStack::PushL(view);
    view->ConstructL();
    
	// add created view to this AppUi
    AddViewL(view);    
    
	// view
    CleanupStack::Pop();

	// activate view
    ActivateLocalViewL( view->Id() ); 
    }

/*
-------------------------------------------------------------------------------

    ~CCamTimerAppUi

    Description: Destructor

    Return value: N/A

-------------------------------------------------------------------------------
*/
CCamTimerAppUi::~CCamTimerAppUi()
    {
    }


/*
-------------------------------------------------------------------------------

    HandleKeyEventL

    Description: Handles a key event (we are monitoring for the navibutton)

    Return value: N/A

-------------------------------------------------------------------------------
*/
TKeyResponse CCamTimerAppUi::HandleKeyEventL(const TKeyEvent& aKeyEvent,TEventCode /*aType*/)
    {
    TInt code = aKeyEvent.iCode;
    switch(code)
        {
		// navigator button is pressed
    	case EKeyOK:
			TInt temp;
			temp=*iWaitingTime;
			// Convert time to microseconds
			*iWaitingTime*=1000000;

            // Start the timing with preview pictures, take a picture and save it.
            static_cast<CCamTimerFormView*>(View(KCamTimerViewId))->TimerL();
			// Return the original waiting time in seconds
			*iWaitingTime=temp;
            return (EKeyWasConsumed);
            break;

        default:
            break;
        }

	// default return value
    return(EKeyWasNotConsumed); 
    }


/*
-------------------------------------------------------------------------------

    HandleCommandL

    Description: Handles a given command

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CCamTimerAppUi::HandleCommandL(TInt aCommand)
    {
	// A switch statement that will be controlled by the command id get from 
	// the OfferKayEvent
    switch (aCommand)	
		{
		// If the exit command is selected from the softkeys
        case EAknSoftkeyExit:  

		// If the exit command is given by the framework
		case EEikCmdExit:				

		// If the exit command is selected from the menu
        case EClose:
		// Call the CBaActiveScheduler's Exit function that stops 
		// the application's thread and destroys it.
		CBaActiveScheduler::Exit();	
		break;

        // "Start timing" was selected from the Options menu
        case ECamTimerStartTiming:
			TInt temp1;
			temp1=*iWaitingTime;
			// Convert time to microseconds
			*iWaitingTime*=1000000;	
			// Start timing the picturetaking
            static_cast<CCamTimerFormView*>(View(KCamTimerViewId))->TimerL();
			// Return the waiting time value in seconds
			*iWaitingTime=temp1;
            break;

        // "Set time" was selected from the Options menu
        case ECamTimerSetTime:
			// Start the dialog to ask the number of seconds desired for 
			// the timing.
			// Call CmdDlgL function with the selection's resource id as argument. 
			// This will execute the dialog
			CmdDlgL(R_CAMTIMER_DIALOG);	
            break;

        case ECamTimerLaunchPhotoAlbum:
			// Start the photo album application to rename and send your picture 
			// via IR/BT/MMS.
			CCoeAppUi::ActivateViewL(TVwsViewId(KPhotoAlbumUid, TUid::Uid(1)));
            break;

		// If the menu command is none of the above do nothing
        default:    
            break;
		}

    }



// This function creates the dialog for settings.
void CCamTimerAppUi::CmdDlgL(TInt aResourceId)
	{
	// If the resource id of the dialog to be executed is R_CAMTIMER_DIALOG 
	// do the following.
	if(aResourceId == R_CAMTIMER_DIALOG)
		// There can be multiple id comparisons here like this causing 
		// launching of different dialogs.
		{		
		// Allocate memory for a new dialog of class CCamTimerDialog
        CCamTimerDialog* dialog=new(ELeave)CCamTimerDialog(*iWaitingTime);
		// Set the dialog to execution by calling its ExecuteLD function. 
		// The dialog will be deleted on return
		dialog->ExecuteLD(R_CAMTIMER_DIALOG);                  
        }
	}

//
//  CCamTimerDocument class
//

/*
-----------------------------------------------------------------------------

    CCamTimerDocument

    Creates new CamTimer document.

    Return Values:  N/A

-----------------------------------------------------------------------------
*/
CCamTimerDocument::CCamTimerDocument(CAknApplication& aApp)
    : CAknDocument(aApp)
    {
	}



/*
-----------------------------------------------------------------------------

    CreateAppUiL

    Creates new CCamTimerAppUi and returns a pointer to it.

    Return Values:  pointer to CCamTimerAppUi

-----------------------------------------------------------------------------
*/
CEikAppUi* CCamTimerDocument::CreateAppUiL()
    {	 
	// Initialise the waiting time
    iWaitingTime=KInitialValue;

    CCamTimerAppUi* appui = new (ELeave) CCamTimerAppUi(iWaitingTime);
	// Return the application ui that has been created
    return appui;

    }	



//
//  CCamTimerApplication class
//

/*
-----------------------------------------------------------------------------

    CreateDocumentL()

    Description: Creates new CamTimer document.

    Return Values:  pointer to new CCamTimerDocument object

-----------------------------------------------------------------------------
*/
CApaDocument* CCamTimerApplication::CreateDocumentL()
    {
    return new (ELeave) CCamTimerDocument(*this);
    }


/*
-----------------------------------------------------------------------------

    AppDllUid()

    Return the UID of CamTimer application.

    Return Values:  UID

-----------------------------------------------------------------------------
*/
TUid CCamTimerApplication::AppDllUid() const
    {
    return KUidCamTimerApp;
    }




//  OTHER EXPORTED FUNCTIONS
//=============================================================================


/*
-----------------------------------------------------------------------------

    NewApplication

    Creates new CCamTimerApplication application and returns a pointer to it.

    Return Values:  pointer to CApaApplication

-----------------------------------------------------------------------------
*/
EXPORT_C CApaApplication* NewApplication()
    {
    return new CCamTimerApplication;
    }



/*
-----------------------------------------------------------------------------

    E32Dll

    Called when the DLL is loaded.

    Return Values:  KErrNone

-----------------------------------------------------------------------------
*/
GLDEF_C TInt E32Dll(TDllReason /*aReason*/)
    {
    return KErrNone;
    }




//  End of File