aknexgridcontainerasselection.cpp

symbian 格子的生成和使用源代码 让你明白九宫格生成原理 适合游戏开发

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

// INCLUDE FILES

#include <aknlists.h>
#include <akntitle.h>
#include <AknQueryDialog.h>
#include <AknIconArray.h>
#include <AknExGrid.rsg>
#include <AknExGrid.mbg>

#include "AknExGrid.hrh"
#include "AknExGridContainerAsSelection.h"
#include "AknExGridDialogFillingOrder.h"


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

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::NewL()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CAknExGridContainerAsSelection* CAknExGridContainerAsSelection::NewL(
                                                const TRect& aRect,
                                                TAknExGridGridType aGridType )
    {
    CAknExGridContainerAsSelection* self = NewLC( aRect, aGridType );
    CleanupStack::Pop( self );
    return self;
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::NewLC()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CAknExGridContainerAsSelection* CAknExGridContainerAsSelection::NewLC(
                                                const TRect& aRect,
                                                TAknExGridGridType aGridType )
    {
    CAknExGridContainerAsSelection* self =
        new ( ELeave ) CAknExGridContainerAsSelection();
    CleanupStack::PushL( self );
    self->ConstructL( aRect, aGridType );
    return self;
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::CAknExGridContainerAsSelection()
// C++ default constructor can NOT contain any code, that might leave.
// -----------------------------------------------------------------------------
//
CAknExGridContainerAsSelection::CAknExGridContainerAsSelection()
: iGrid( NULL ), iGridType( EAknExGridSelectionGrid ),
  iLabel( NULL ), iToDoLabel( NULL )
    {
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::ConstructL()
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::ConstructL(
        const TRect& aRect, TAknExGridGridType aGridType )
    {
    CreateWindowL();

    // Create labels
    TBuf< KLengthOfLabelString > label;
    iLabel = new ( ELeave ) CEikLabel;
    iLabel->SetContainerWindowL( *this );
    iCoeEnv->ReadResource( label, R_EXGR_LABEL_VIEW_AS_SELECTION );
    iLabel->SetTextL( label );

    TBuf< KLengthOfToDoLabelString > dolabel;
    iToDoLabel = new ( ELeave ) CEikLabel;
    iToDoLabel->SetContainerWindowL( *this );
    iCoeEnv->ReadResource( dolabel, R_EXGR_DOLABEL_VIEW_AS_SELECTION );
    iToDoLabel->SetTextL( dolabel );

    iTestNumber = 0;

    // Create a grid
    iGrid = new ( ELeave ) CAknGrid;
    iGrid->SetContainerWindowL( *this );

    iGridM = new ( ELeave ) CAknGridM;

    iGridType = aGridType;
    iGrid->SetModel( iGridM );
    if ( iGridType == EAknExGridSelectionGrid )
        {
        iGrid->ConstructL( this, EAknListBoxSelectionGrid );
        iTitles = iCoeEnv->ReadDesCArrayResourceL( R_EXGR_TITLE_SELECTION );
        CEikStatusPane* sp = iEikonEnv->AppUiFactory()->StatusPane();
        CAknTitlePane* titlePane = static_cast<CAknTitlePane*>
            ( sp->ControlL( TUid::Uid( EEikStatusPaneUidTitle ) ) );
        titlePane->SetTextL( ( *iTitles )[ESelectionTest1] );
        }
    else
        {
        iGrid->ConstructL( this, EAknListBoxMarkableGrid );
        iTitles = iCoeEnv->ReadDesCArrayResourceL( R_EXGR_TITLE_MARKABLE );
        CEikStatusPane* sp = iEikonEnv->AppUiFactory()->StatusPane();
        CAknTitlePane* titlePane = static_cast<CAknTitlePane*>
            ( sp->ControlL( TUid::Uid( EEikStatusPaneUidTitle ) ) );
        titlePane->SetTextL( ( *iTitles )[EMarkableTest1] );
        }

    // Set initial parameters for the grid
    iVerticalOrientation = ETrue;
    iTopToBottom = ETrue;
    iLeftToRight = ETrue;
    iNumOfColumns = KNumOfSelectionColumns;
    iNumOfRows = KNumOfSelectionRows;
    iContentType = EContainBoth;
    iNumOfItems = KInitialNumOfItemsInSelection;

    iVerticalScrollingType = CAknGridView::EScrollIncrementLineAndLoops;
    iHorizontalScrollingType = CAknGridView::EScrollIncrementLineAndLoops;

    // Set empty text
    TBuf< KLengthOfEmptyText > emptyText;
    iCoeEnv->ReadResource( emptyText, R_EXGR_TEXT_EMPTY_SELECTION_GRID );
    iGrid->SetEmptyGridTextL( emptyText );

    // Set Layout
    iGrid->SetRect( aRect );
    iSizeOfItems.iWidth = ( aRect.iBr.iX - aRect.iTl.iX ) / iNumOfColumns;
    iSizeOfItems.iHeight = ( aRect.iBr.iY - aRect.iTl.iY ) / iNumOfRows;
    SetGridLayoutL();

    // Create resouce for grid
    CreateGridResourceL();

    iInstantsCreated = ETrue;

    // Activate view
    SetRect( aRect );
    ActivateL();

    // Activate the grid
    iGrid->MakeVisible( ETrue );
    iGrid->SetFocus( ETrue );
    iGrid->ActivateL();
    iGrid->DrawNow();
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::~CAknExGridContainerAsSelection()
// Destructor.
// -----------------------------------------------------------------------------
//
CAknExGridContainerAsSelection::~CAknExGridContainerAsSelection()
    {
    if ( iInstantsCreated )
        {
        delete iLabel;
        delete iToDoLabel;
        delete iGrid;
        }
    delete iTitles;
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::InsertDataL()
// Inserts data to the current index in grid.
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::InsertDataL( TInt aNum )
    {
    // The number of items in the grid.
    TInt numberOfData = iGrid->GridModel()->NumberOfData();

    // If there is no item in grid
    if ( numberOfData < 1 )
        {
        AddDataL( aNum );
        return;
        }

    MDesCArray *array = iGrid->Model()->ItemTextArray();
    CDesCArray *cArray = ( CDesCArray* )array;

    // Creates text which is added to the grid.
    TBuf< KLengthOfItemResourceString > number;
    TBuf< KLengthOfItemResourceString > format;
    if ( iGridType == EAknExGridMarkableGrid )
        {
        iCoeEnv->ReadResource( format,
                               R_EXGR_FORMATSTRING_MARKABLEITEM );
        }
    else
        {
        iCoeEnv->ReadResource( format,
                               R_EXGR_FORMATSTRING_SELECTIONITEM );
        }

    // This shows current index item.
    TInt oldCurrIndex = iGrid->CurrentDataIndex();

    // If the number of items in Grid is more than zero
    for ( TInt loop = numberOfData + aNum; loop > numberOfData; loop-- )
        {
        number.Format( format, loop );
        // Insert the item to the current index.
        cArray->InsertL( oldCurrIndex , number );
        }

    // Inform list box that data was added.
    iGrid->HandleItemAdditionL();

    // If item size changes we need to alter the item style
    ApplySelGridGraphicStyleL();

    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::AddDataL()
// Adds data to the last index in the grid.
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::AddDataL( TInt aNum )
    {
    MDesCArray* array = iGrid->Model()->ItemTextArray();
    CDesCArray* cArray = ( CDesCArray* )array;

    // Creates text which is added to the grid.
    TBuf<KLengthOfItemResourceString> number;
    TBuf<KLengthOfItemResourceString> format;
    if ( iGridType == EAknExGridMarkableGrid )
        {
        iCoeEnv->ReadResource( format,
                               R_EXGR_FORMATSTRING_MARKABLEITEM );
        }
    else
        {
        iCoeEnv->ReadResource( format,
                               R_EXGR_FORMATSTRING_SELECTIONITEM );
        }


    // The number of items in the grid.
    TInt numberOfData = iGrid->GridModel()->NumberOfData();

    // Add the item to the last index
    for ( TInt loop = numberOfData; loop < aNum + numberOfData; loop++ )
        {
        number.Format( format, loop + 1 );
        cArray->AppendL( number );
        }

    // Inform list box that data was added.
    iGrid->HandleItemAdditionL();

    // If item size changes we need to alter the item style
    ApplySelGridGraphicStyleL();

    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::RemoveDataL()
// Removes data from the current index.
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::RemoveDataL( TInt aNum, TBool aWhere )
    {
    MDesCArray *array = iGrid->Model()->ItemTextArray();
    CDesCArray *cArray = ( CDesCArray* )array;

    // The number of items in the grid.
    TInt numberOfData = iGrid->GridModel()->NumberOfData();


    if ( numberOfData < 1 )
    // In the case that there is no item in grid.
        {
        TBuf< KLengthOfAboutString > noItem;
        iCoeEnv->ReadResource( noItem, R_EXGR_TEXT_NO_ITEM );
        iEikonEnv->AlertWin( noItem );
        return;
        }

    TInt oldCurrIndex = iGrid->CurrentItemIndex();
    TInt newCurrIndex = oldCurrIndex;

    if ( aWhere )
        {
        if ( numberOfData - oldCurrIndex < aNum )
            {
            aNum = numberOfData - oldCurrIndex;
            }

        newCurrIndex = oldCurrIndex;
        }
    else
        {
        if ( ( numberOfData < aNum ) || ( aNum < 0 ) )
            {
            aNum = numberOfData;
            }

        newCurrIndex = numberOfData - aNum;
        }

    // Delete Items.
    cArray->Delete( newCurrIndex, aNum );
    iGrid->HandleItemRemovalL();

    TBool oldCurrIndexWasRemoved = ETrue;
    if ( aWhere && ( oldCurrIndex < numberOfData - aNum ) )
        {
        oldCurrIndexWasRemoved = EFalse;
        }

    // If item size changes, need to alter the item style
    ApplySelGridGraphicStyleL();
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::SetVerticalScrollingType()
// Sets vertical scrolling type to member variables.
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::SetVerticalScrollingTypeL(
    CAknGridView::TScrollingType aScrollingType )
    {
    iVerticalScrollingType = aScrollingType;

    SetGridLayoutL();
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::SetHorizontalScrollingType()
// Sets horizontal scrolling type to member variables
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::SetHorizontalScrollingTypeL(
    CAknGridView::TScrollingType aScrollingType )
    {
    iHorizontalScrollingType = aScrollingType;

    SetGridLayoutL();

    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::SetOrientation()
// Sets orientation to member variables
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::SetOrientation(
    TBool aVerticalOrientation,
    TBool aToRight, TBool aToBottom )
    {
    iVerticalOrientation = aVerticalOrientation;
    iLeftToRight = aToRight;
    iTopToBottom = aToBottom;
    }

// -----------------------------------------------------------------------------
// CAknExGridContainerAsSelection::GetOrientation()
// Gets orientation from member variables
// -----------------------------------------------------------------------------
//
void CAknExGridContainerAsSelection::GetOrientation(
    TBool& aVerticalOrientation,
    TBool& aToRight, TBool& aToBottom )
    {
    aVerticalOrientation = iVerticalOrientation;
    aToRight = iLeftToRight;