examples/Graphics/Embedding/EmbeddingShell.cpp

/*
Copyright (c) 2000-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of Nokia Corporation nor the names of its contributors
  may be used to endorse or promote products derived from this software
  without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description:  
*/



#include <e32keys.h>

#include <coemain.h>

#include <eikenv.h>
#include <eikdef.h>
#include <eikon.hrh>
#include <eiklabel.h>
#include <eikstart.h>

#include <embeddingshell.rsg>
#include "EmbeddingShell.hrh"
#include "EmbeddingShell.h"


//
// TExampleShellModel
//

TExampleShellModel::TExampleShellModel()
        {
        iLibrary=KNullDesC;
        }

TBool TExampleShellModel::Differs(const TExampleShellModel* aCompare) const
        {
        return((*(TInt32*)this)!=(*(TInt32*)aCompare));
        }

//
// class CExampleShellContainer
//

void CExampleShellContainer::ConstructL(const TRect& aRect, TExampleShellModel* aModel)
    {
        iModel=aModel;
    CreateWindowL();
    Window().SetShadowDisabled(ETrue);
    iContext=this;
        iBrushStyle=CGraphicsContext::ESolidBrush;
    iBrushColor=KRgbWhite;
    SetRect(aRect);
        CreateLabelL();
    ActivateL();
    }

CExampleShellContainer::~CExampleShellContainer()
    {
        delete iExampleControl;
        delete iLabel;
    }
    
TInt CExampleShellContainer::CountComponentControls() const
        {
        return 1 + (iExampleControl ? 1 : 0);
        }

CCoeControl* CExampleShellContainer::ComponentControl(TInt aIndex) const
        {
        switch (aIndex)
                {
        case 0: return iLabel;
        case 1: return iExampleControl;
        default: return 0;
                };
        }

const TInt KLabelHeight=20;

void CExampleShellContainer::CreateLabelL()
        {
        iLabel=new (ELeave) CEikLabel;
        TRect rect=Rect();
        rect.iTl.iY=rect.iBr.iY-KLabelHeight; // make it bottom 20 pixels
        iLabel->SetContainerWindowL(*this);
        iLabel->SetRect(rect);
        iLabel->SetAlignment(EHCenterVCenter); // center text
        iLabel->SetBufferReserveLengthL(200); // nice long buffer
        iLabel->SetFont(iEikonEnv->AnnotationFont());
        iLabel->ActivateL(); // now ready
        }

void CExampleShellContainer::ResetExampleL(CGraphicExampleControl* aExample)
        {
        // get rid of old control
        delete iExampleControl;
        // set up new one
        iExampleControl=aExample;
        // if non-zero, then carry on
        if (!iExampleControl) return;
        TRect rect=Rect(); // get our rect
        rect.iBr.iY-=KLabelHeight; // make way for label
        rect.Shrink(2,2); // shrink it a bit
        iExampleControl->ConstructL(rect,this,*this); // construct, giving rect and observer
        }

_LIT(KTxtFinished,"example finished");
void CExampleShellContainer::NotifyGraphicExampleFinished()
        {
        NotifyStatus(KTxtFinished);
        }

void CExampleShellContainer::NotifyStatus(const TDesC& aMessage)
        {
        TRAPD(err,iLabel->SetTextL(aMessage));
        if(err)
                {
                return;
                }
        if (IsActivated()) iLabel->DrawNow();
        }

TKeyResponse CExampleShellContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
    {
        if      (iExampleControl)
                return iExampleControl->OfferKeyEventL(aKeyEvent,aType);
        else
                return EKeyWasNotConsumed;
    }

void CExampleShellContainer::Draw(const TRect& /*aRect*/) const
        {
        CWindowGc& gc = SystemGc();
        gc.SetPenStyle(CGraphicsContext::ENullPen);
        gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
        gc.DrawRect(Rect());
        }

//
// CExampleShellAppUi
//

_LIT(KTxtInitialized,"initialized");
void CExampleShellAppUi::ConstructL()
    {
    BaseConstructL();
        iModel=((CExampleShellDocument*)iDocument)->Model();
    iContainer=new(ELeave) CExampleShellContainer;
    iContainer->ConstructL(ClientRect(),iModel);
        iContainer->NotifyStatus(KTxtInitialized);
        // add container to stack; enables key event handling.
        AddToStackL(iContainer);
    }

void CExampleShellAppUi::HandleCommandL(TInt aCommand)
        {
        switch (aCommand)
                {
        case EExampleShellSelectPicture:
                iContainer->ResetExampleL(new (ELeave) CPictureControl);
                return;
        case EEikCmdExit:
                Exit();
                return;
                }
        }

CExampleShellAppUi::~CExampleShellAppUi()
        {
        RemoveFromStack(iContainer);
    delete iContainer;
        }

//
// CExampleShellDocument
//

CEikAppUi* CExampleShellDocument::CreateAppUiL()
        {
    return(new(ELeave) CExampleShellAppUi);
        }

//
// CExampleShellApplication
//

TUid CExampleShellApplication::AppDllUid() const
        {
        return KUidExampleShellApp;
        }

CApaDocument* CExampleShellApplication::CreateDocumentL()
        {
        return new(ELeave) CExampleShellDocument(*this);
        }

//
// EXPORTed functions
//

EXPORT_C CApaApplication* NewApplication()
        {
        return new CExampleShellApplication;
        }

GLDEF_C TInt E32Main()
        {
        return EikStart::RunApplication(NewApplication);
        }

---