bioexample.cpp

Symbian C++ of Nokia下的源码

/*

        BIOexample.CPP - source file for BIOexample application
        C++ implementation


*/


//  Include Files
#include <eiklabel.h>                   // for CEikLabel 
#include <e32std.h>                     // for TPckgBuf
#include <smut.h>                       // for KUidMsgTypeSMS
#include <txtrich.h>                    // for CRichText
#include <eikenv.h>                     // for CEikonEnv
#include <editwatc.h>                   // for TEditorParameters
#include <txtfmlyr.h>                   // for CParaFormatLayer, CCharFormatLayer 
#include <sendui.h>                     // for CSendAppUi 


#include "BIOexample.h"             // own header
#include "BIOexample.hrh"           // own enumerations


// Constants
const TUid KUidBIOexampleApp = { 0x101F402A };      // BIOexample application UID 
const TUid KUidExampleMessageType = { 0x1000ffff }; // example BIO message type UID
_LIT(KBIOExampleTag, "//BIOEX #");                  // Our BIO message identifier tag + '#' (defined also in bioexamplebif.rss)
_LIT(KBIOExampleFrom, "From: ");
_LIT(KBIOExampleMessage, "Message: ");
const TInt KEditorTextLimit = 160;


//
// CBIOexampleContainer 
//

CBIOexampleContainer::~CBIOexampleContainer()
    {
    delete iComponentControl;
    delete iSender;
    }

void CBIOexampleContainer::ConstructL(TDes& aText, TDes& aSender)
    {
    ConstructContainerControlL();                     // Construct self
    ConstructComponentControlL(aText, aSender);       // Construct component control(s)
    }

TInt CBIOexampleContainer::CountComponentControls() const
    {
    return 2;                                         // iComponentControl is always there
    }

CCoeControl* CBIOexampleContainer::ComponentControl(TInt aIndex) const
    {
    if(aIndex==0)
        return iComponentControl;
    if(aIndex==1)
        return iSender;
    return NULL;
    }

void CBIOexampleContainer::ConstructContainerControlL()
    {
    CreateWindowL();                                   // Makes the control window owning
    }

void CBIOexampleContainer::ConstructComponentControlL(TDes& aText, TDes& aSender)
    {
    iComponentControl=new(ELeave)CEikLabel;                         // Create a CEikLabel object
    iComponentControl->SetTextL(aText);                             // Set label text
    
    iSender = new(ELeave)CEikLabel;
    iSender->SetTextL(aSender);
    
    }

void CBIOexampleContainer::SizeChanged()
    {
    TSize controlSize=iComponentControl->MinimumSize();             // Ask iComponentControl's size
    TSize containerSize=Rect().Size();                              // containerSize is CBIOexampleContainer's own size and can be found in the size of its rectangle.
    TPoint controlPosition((containerSize.iWidth-controlSize.iWidth)/2, 
                           (containerSize.iHeight-controlSize.iHeight)/2); // Calculate a position for control that places it to the center of CBIOexampleContainer
    TRect controlRect(controlPosition,controlSize);
        
    iComponentControl->SetRect(controlRect);                        // Set iComponentControl a rect in which it is supposed to appear.
    
    controlSize=iSender->MinimumSize();
    controlPosition.SetXY((containerSize.iWidth-controlSize.iWidth)/2,
                          ((containerSize.iHeight-controlSize.iHeight)/2) + controlSize.iHeight );
    TRect senderRect(controlPosition,controlSize);
    iSender->SetRect(senderRect);
    }

void CBIOexampleContainer::Draw(const TRect& /*aRect*/) const
    {
    CGraphicsContext& gc=SystemGc();                                // Get the graphics context in which to draw.

    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);                // Set brush style to solid. Initial value in a graphics context is ENullBrush.

    gc.DrawRect(Rect());                                            // Draw a rectangle.
    }

TKeyResponse CBIOexampleContainer::OfferKeyEventL(const TKeyEvent& /*aKeyEvent*/, TEventCode /*aType*/)
	{
    TKeyResponse response=EKeyWasNotConsumed;   // not consuming any keys
    return response;
    }


//
//  CBIOexampleAppUi
//


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

    ~CBIOexampleAppUi

    Description: Destructor

    Return value: N/A

-------------------------------------------------------------------------------
*/
CBIOexampleAppUi::~CBIOexampleAppUi()
    {
    delete iContainerControl;
    iId = NULL;

    delete paraFormatLayer;
    delete charFormatLayer;
    delete messageBodyContent; 
    delete sendAppUi;
    }


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

    ProcessCommandParametersL();

    Description: Processing the command line parameters (when message is opened
                 from the messaging application, TMsvId of the message is passed
                 in command line parameters)

    Return value: TBool

-------------------------------------------------------------------------------
*/
TBool CBIOexampleAppUi::ProcessCommandParametersL(TApaCommand /*aCommand*/,TFileName& /*aDocumentName*/,const TDesC8& aTail)
    {
    // Only aTail parameter is of interest to us, it contains TEditorParameters object that contains
    // the TMsvId as one attribute.


    // Checking the length of comm line params
    if (aTail.Length() > 0) // we have comm line params => program was started from Messaging application
        {
        iNormalStart = EFalse;
        
        // --- reading command line parameters ---

        // Get the parameters passed by the launching MTMUI
        TPckgBuf<TEditorParameters> paramPack;      // the params are read into a TPckgBuf template (see SDK documentation for more info)
        paramPack.Copy(aTail);
        TEditorParameters params(paramPack());

        // saving the message id
        iId = &params.iId;
        }
    else    
        {
        // no command line params => program started manually
        iNormalStart = ETrue;
        }

    CompleteConstructL();     // complete construction with the command line parameters.

    return EFalse;
    }
/*
-------------------------------------------------------------------------------

    ConstructL();

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

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CBIOexampleAppUi::ConstructL()
    {
    BaseConstructL();
    iNormalStart = ETrue;   // at this point we suppose that no comm line params have been given

    iId = NULL;             // set message id to NULL as default

    // for message sending
    paraFormatLayer=CParaFormatLayer::NewL();
    charFormatLayer=CCharFormatLayer::NewL();
    messageBodyContent=CRichText::NewL(paraFormatLayer, charFormatLayer); 
    
    // create sendAppUi
    sendAppUi=CSendAppUi::NewL(EBIOexampleCmdSend); // New Send ui object (number 'EBIOexampleCmdSend' is tied
                                                    // to our menu item "Send message" in "Messaging"

    }


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

    CompleteContructL();

    Description: Continuing construction... (after processing command line params)

    Return value: N/A

-------------------------------------------------------------------------------
*/
void CBIOexampleAppUi::CompleteConstructL()
    {

    TBuf<KEditorTextLimit> text, sender;    // for reading & presenting the message sender & body
    sender.Append(KBIOExampleFrom);         // insert field description ("From: ")

    // First check if app has been started from the messaging app or "the normal way", manually...
    if(iNormalStart == EFalse)  // we have comm line params and will open up message with the given TMsvId
        {
        
        // read the message into descriptors
        ReadMessageL(text, sender);

        // read message text and locate "//BIOEX #" header part
        TInt pos;
	    User::LeaveIfError(pos = text.Locate('#'));   // # is in the message only to test string handling here (it could be omitted)
	    pos++;
        text.Delete(0, pos);                          // delete message header tag

        // insert field description in front
        text.Insert(0, KBIOExampleMessage);     // "Message: "
        

        // Delete message from messaging server
        DeleteMessageL(*iId);
        iId = NULL;

        }
    else    // no comm line params, opening "empty" application
        {
        text.Append(KBIOExampleMessage);        // "Message: "
        text.Append(_L("No message loaded"));   // "Message: No message loaded"
        sender.Append(_L("N/A"));               // "From: N/A"
        }


    // Then construct the UI components
    iContainerControl = new(ELeave) CBIOexampleContainer;             
    iContainerControl->ConstructL(text, sender);             // Construct a view control with message text and sender number (in normal start these are empty)
    iContainerControl->SetRect(ClientRect());                // Sets view control's extent to the space available
    iContainerControl->ActivateL();                          // Activate the view control

    CCoeAppUi::AddToStackL(iContainerControl);               // Add container to Control Stack to make it automatically receive key events.

    }

/*