audioplayerappui.cpp

series60 应用程序开发的源代码 series60 应用程序开发的源代码

/**
 *
 * @brief Definition of CAudioPlayerAppUi
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version 1.0
 */

// INCLUDE FILES

// Class include
#include "AudioPlayerAppUi.h"

// System includes
#include <uikon.hrh>            // EEikCmdExit
#include <eikmenup.h>
#include <eikbtgpc.h>
#include <AudioPlayer.rsg>

// User includes
#include "AudioPlayer.hrh"            // menu commands
#include "AudioPlayerView.h"        // CAudioPlayerAppView
#include "AudioPlayerApplication.h"    // app uid
#include "AudioPlayerEngine.h"        // for state, so that appropriate menu can be drawn


/**
 * Destructor.
 */
CAudioPlayerAppUi::~CAudioPlayerAppUi()
{
    if (iView)
    {
        RemoveFromStack(iView);
        delete iView;
    }
}

/**
 * Symbian OS 2nd phase constructor.  Constructs the application's view.
 * Add the view to the control stack so it can receive user input
 */
void CAudioPlayerAppUi::ConstructL()
{
    BaseConstructL();

    iView = CAudioPlayerView::NewL(ClientRect());
    iView->SetMopParent(this);
    AddToStackL(iView);

    Cba()->MakeVisible(ETrue);
}

/**
 * From CEikAppUi, takes care of command handling for the view.
 *
 * @param aCommand command to be handled
 */
void CAudioPlayerAppUi::HandleCommandL(TInt aCommand)
{
    switch(aCommand)
    {
        case EAknSoftkeyExit:
        case EAknSoftkeyBack:
            Exit();
            break;
        case EAudioPlayerMenuPlayTone:
            iView->PlayToneL();
            break;
        case EAudioPlayerMenuPlayStream:
            iView->PlayStreamL();
            break;
        case EAudioPlayerMenuPlayFileWav:
            iView->PlayWavL();
            break;
        case EAudioPlayerMenuPlayFileMidi:
            iView->PlayMidiL();
            break;
        case EAudioPlayerMenuStop:
            iView->StopL();
            break;
        default:
            break;
    }
}

/**
* Framework function called prior to displaying a menu so that, in the current
* application context, irrelevant items can be hidden and relevant items displayed.
*
* @param aResourceId The ID of the menu from its resource declaration
* @param aMenuPane The menu as a usable object
*/
void CAudioPlayerAppUi::DynInitMenuPaneL(TInt aResourceId, CEikMenuPane* aMenuPane)
// updates the menu according to the state of the engine and if the view is showing the messages
{
#ifdef __WINS__
    // Grey out the MIDI option on the emulator.
    if (aResourceId == R_AUDIOPLAYER_MENU_PLAYFILELIST)
    {
        aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayFileMidi, ETrue);
    }
#endif

    if (aResourceId != R_AUDIOPLAYER_MENU)
    {
        return;
    }

    switch (iView->State())
    {
        case CAudioPlayerEngine::EStopped:
            aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayTone, EFalse);
            aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayFile, EFalse);
            aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayStream, EFalse);
            aMenuPane->SetItemDimmed(EAudioPlayerMenuStop, ETrue);
            break;
        case CAudioPlayerEngine::EPlaying:
            aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayTone, ETrue);
            aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayFile, ETrue);
            aMenuPane->SetItemDimmed(EAudioPlayerMenuPlayStream, ETrue);
            aMenuPane->SetItemDimmed(EAudioPlayerMenuStop, EFalse);
            break;
        default:
            break;
    }
}