chxavinfolist.cpp

来自「symbian 下的helix player源代码」· C++ 代码 · 共 169 行

/*****************************************************************************
 * chxavinfolist.cpp
 * -----------------
 *
 * Synopsis:
 * Info list manager for stuff.
 *
 *
 *
 * Target:
 * Symbian OS
 *
 *
 * (c) 1995-2003 RealNetworks, Inc. Patents pending. All rights reserved.
 *
 *****************************************************************************/

// Symbian includes...
#include <e32base.h>
#include <badesca.h>
#include <bamdesca.h>
#include <coeutils.h>
#include <aknenv.h>


// Includes from this project...
#include "chxavmisc.h"
#include "chxavinfolist.h"
#include "chxavcleanupstack.h"
#include "chxavcleanstring.h" 
#include "chxavmiscconstants.h"

///////////////////////////////////
// ctor
CHXAvInfoList::CHXAvInfoList()
{
}

///////////////////////////////////
// dtor
CHXAvInfoList::~CHXAvInfoList()
{
}

void CHXAvInfoList::ConstructL()
{
    m_pFont = CEikonEnv::Static()->NormalFont();
    m_pLabels = new (ELeave) CDesCArrayFlat( CHXAvMisc::k_defaultArrayGranularity ); 
    m_pFields = new (ELeave) CDesCArrayFlat( CHXAvMisc::k_defaultArrayGranularity ); 
    const TInt k_cchMaxDisplayLine = 50;
    m_pbuff = HBufC::NewL(k_cchMaxDisplayLine);
}

///////////////////////////////////
//
void CHXAvInfoList::AddLineL(const TDesC& caption, const TDesC& fieldText, AddLineFlag flag)
{
    // make sure field is stripped of bad (unprintable) characters (caption is assumed good)
    HBufC* pFixedText = CHXAvMisc::AllocDisplayFriendlyStringL(fieldText);
    AUTO_PUSH_POP_DEL(pFixedText);

    if( 0 == pFixedText->Length() &&  skipEmptyLine == flag )
    {
        // skip this; we don't display lines with empty fields
        return;
    }

    HBufC* pField = 0;
    if (pFixedText->Length())
    {
        pField = pFixedText->AllocL();
    }
    else
    {
        pField = CHXAvMisc::KOneSpace().AllocL();
    }
    AUTO_PUSH_POP_DEL(pField);

    CArrayFix<TInt>* pWidths = new ( ELeave ) CArrayFixFlat<TInt>(CHXAvMisc::k_defaultArrayGranularity);
    AUTO_PUSH_POP_DEL(pWidths);

    TInt cxFieldText = m_pFont->TextWidthInPixels(fieldText);
    if( cxFieldText > CHXAvMisc::k_cxMaxPopupListBoxLine )
    {
        TInt lineCount = cxFieldText / CHXAvMisc::k_cxMaxPopupListBoxLine + 2;
        pWidths->AppendL( CHXAvMisc::k_cxMaxPopupListBoxLine, lineCount );
    }
    else
    {
        pWidths->AppendL( CHXAvMisc::k_cxMaxPopupListBoxLine, 4);
    }

    //
    // split up field into lines: pField -> array of broken up lines (pLines)
    //
    CArrayFix<TPtrC>* pLines = new ( ELeave ) CArrayFixFlat<TPtrC>(CHXAvMisc::k_defaultArrayGranularity);
    AUTO_PUSH_POP_DEL(pLines);
    AknTextUtils::WrapToArrayL( 
        *pField,
        *pWidths, 
        *m_pFont,
        *pLines );

    // add as many lines as necessary to fully display field of text
    const TInt count = pLines->Count();
    for ( TInt idx = 0; idx < count; ++idx )
    {
        // caption field
        if (0 == idx)
        {
            // first line gets actual caption
            m_pLabels->AppendL(caption);
        }
        else
        {
            m_pLabels->AppendL(CHXAvMisc::KOneSpace);
        }

        // value field
        m_pFields->AppendL((*pLines)[idx]);
    }



}


///////////////////////////////////
// add one or more lines (as many as necessary) to display 
// given field of text
//
void CHXAvInfoList::AddLineL(TInt idCaptionText, const TDesC& fieldText, AddLineFlag flag)
{
    CHXAvCleanString caption(idCaptionText);
    AddLineL(caption(), fieldText, flag);
}

///////////////////////////////////
//
void CHXAvInfoList::AddLinesL(const MDesCArray* pCaptions, const MDesCArray* pFields, AddLineFlag flag)
{
    HX_ASSERT(pCaptions->MdcaCount() == pFields->MdcaCount());
    TInt count = pCaptions->MdcaCount();
    for(TInt idx = 0; idx < count; ++idx)
    {
        AddLineL(pCaptions->MdcaPoint(idx), pFields->MdcaPoint(idx), flag);
    }
}

///////////////////////////////////
//
TInt CHXAvInfoList::MdcaCount() const
{
    return m_pLabels->Count();
}

///////////////////////////////////
//
TPtrC CHXAvInfoList::MdcaPoint(TInt aIndex) const
{
    TPtr ptr = m_pbuff->Des();
    ptr.Zero();
    ptr.Append((*m_pLabels)[aIndex]);
    ptr.Append(CHXAvMisc::KListColumnDelimiter);
    ptr.Append((*m_pFields)[aIndex]);

    return ptr;
}