soundappui.cpp

symbian 可以实现控制声音大小的源码 非常实用！

/* Copyright (c) 2004, Nokia. All rights reserved */


// INCLUDE FILES
#include <eikenv.h>
#include <avkon.hrh>
#include <eikbtgpc.h>
#include <Sound.rsg>

#include "sound.pan"
#include "Sound.hrh"
#include "SoundAppUi.h"
#include "SoundView.h"
#include "toneadapter.h"
#include "playeradapter.h"
#include "recorderadapter.h"


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

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

// -----------------------------------------------------------------------------
// CSoundAppUi::ConstructL()
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CSoundAppUi::ConstructL()
    {
    // Initialise app UI
    BaseConstructL();

    // Constructs all services.
    iToneAdapter     = CToneAdapter::NewL( *this );
    iPlayerAdapter   = CPlayerAdapter::NewL( KSoundSampleFile, *this );
    iRecorderAdapter = CRecorderAdapter::NewL( *this );
    
    // Set the Initialize mode for Tone
    iAudioAdapter = iToneAdapter;
    
    // Create view and ask to draw the indetifier to screen
    iAppView = CSoundView::NewL( ClientRect(), iAudioAdapter->Identify() );
    
    // Set iAppView to controll Stack.
    AddToStackL( iAppView );
    }

// -----------------------------------------------------------------------------
// CSoundAppUi::~CSoundAppUi()
// Destructor.
// -----------------------------------------------------------------------------
//
CSoundAppUi::~CSoundAppUi()
    {
    iEikonEnv->RemoveFromStack( iAppView );

    delete iAppView;
    delete iToneAdapter;
    delete iPlayerAdapter;    
    delete iRecorderAdapter;    

    iAudioAdapter = NULL;
    }

// -----------------------------------------------------------------------------
// CSoundAppUi::HandleCommandL()
// Takes care of Command handling.
// -----------------------------------------------------------------------------
//
void CSoundAppUi::HandleCommandL( TInt aCommand )
    {
    switch ( aCommand )
        {
        case EEikCmdExit:
        case EAknSoftkeyExit:
            Exit();
            break;

        case ESoundCmdTone:
            SetAdapterL( iToneAdapter );
            break;

        case ESoundCmdPlayer:
            SetAdapterL( iPlayerAdapter );
            break;

        case EESoundCmdRecorder:
            SetAdapterL( iRecorderAdapter );
            break;

        case ESoundCmdPlay:
            iAudioAdapter->PlayL();
            break;

        case ESoundCmdStop:
            iAudioAdapter->StopL();
            break;

        case ESoundCmdRecord:
            iAudioAdapter->RecordL();
            break;

        default:
            User::Panic( KSound, KSoundPanicUnexpectedCommand );
            break;
        }
    }


// -----------------------------------------------------------------------------
// CSoundAppUi::SetAdapterL()
// Sets audio adapter (tone,recorder, player)
// -----------------------------------------------------------------------------
//
void CSoundAppUi::SetAdapterL( MAudioAdapter* aAudioAdapter )
    {
    iAudioAdapter = aAudioAdapter;
    UpdateViewL();
    }

// -----------------------------------------------------------------------------
// CSoundAppUi::UpdateViewL()
// Update View.
// -----------------------------------------------------------------------------
//
void CSoundAppUi::UpdateViewL()
    {
    iAppView->NotifyStatusL( iAudioAdapter->Identify() );
    iAppView->DrawNow();
    }

// -----------------------------------------------------------------------------
// CSoundAppUi::DynInitMenuPaneL()
// This function is called by the EIKON framework just before it displays
// a menu pane. Its default implementation is empty, and by overriding it,
// the application can set the state of menu items dynamically according
// to the state of application data.
// ------------------------------------------------------------------------------
//
void CSoundAppUi::DynInitMenuPaneL( TInt aResourceId, 
                                    CEikMenuPane* aMenuPane )
    {
    if ( aResourceId == R_SOUND_MENU )
        {
        iAudioAdapter->UpdateMenuL( aMenuPane );
        }
    }

// End of File