rowlayoutpl.cpp

Wxpython Implemented on Windows CE, Source code

    }

    /*
    pBar = node_to_first_bar_node( pRow );

    while( pBar )
    {
        cbBarInfo& bar = node_to_bar( pBar );

        if ( !bar.IsFixed() )

            bar.mLenRatio = pcntSum / bar.mLenRatio;

        pBar = pBar->Next();
    }
    */

    int    prevX   = 0;
    double freeSpc = GetRowFreeSpace( pRow );

    // tricky stuff (improtant!):
    // when not-fixed bar is removed from the row and there are
    // still some other not-fixed ones left in that row, then
    // the sum of mLenRatio's is no longer 1.0 - this is left
    // intintionally to handle the case when the removed bar
    // is returned right back to the row - so that it would retain
    // it's original dimensions in this row (this is kind of AI...)
    //
    // The problem is - when it's remvoed, the sum of
    // mLenRatio's is not in "balance", i.e. is < 1.0,
    // it's possible to restore balance, but instead of that
    // we artifically ajdust freeSpc value in a way that it would
    // look like total of mLetRatio's is 1.0, thus original
    // len. ratios are _preserved_:

    if (pcntSum == 0.0)
        pcntSum = 1.0;

    double unit = freeSpc / pcntSum;

    bool haveSquished = false;

    for ( i = 0; i != pRow->mBars.Count(); ++i )
    {
        if ( !pRow->mBars[i]->IsFixed() )
        {
            cbBarInfo& bar = *pRow->mBars[i];

            if ( int( unit * bar.mLenRatio ) < mpPane->mProps.mMinCBarDim.x )
            {
                haveSquished = true;

                bar.mBounds.width = -1; // mark as "squished"

                pcntSum -= bar.mLenRatio;

                freeSpc -= mpPane->mProps.mMinCBarDim.x;
            }
        }
    }  // for

    if ( haveSquished )
        unit = freeSpc / pcntSum;

    for ( i = 0; i != pRow->mBars.Count(); ++i )
    {
        cbBarInfo& bar = *pRow->mBars[i];

        bar.mBounds.x = prevX;

        if ( !bar.IsFixed() )
        {
            if ( bar.mBounds.width == -1 )

                bar.mBounds.width = mpPane->mProps.mMinCBarDim.x;
            else
                bar.mBounds.width = int( unit * bar.mLenRatio );

            // a little bit of AI:
            // memorize bar's height and width, when docked in
            // the current orientation - by making the current
            // dimensions to be "preffered" ones for this docking state

            if ( !bar.IsFixed() )
            {
                bar.mDimInfo.mSizes[ bar.mState ].x = bar.mBounds.width;
                bar.mDimInfo.mSizes[ bar.mState ].y = bar.mBounds.height;
            }
        }

        prevX = bar.mBounds.x + bar.mBounds.width;
    }
}

void cbRowLayoutPlugin::DetectBarHandles( cbRowInfo* pRow )
{
    // first pass from left to right (detect left-side handles)

    bool foundNotFixed = false;

    size_t i;
    for ( i = 0; i != pRow->mBars.Count(); ++i )
    {
        cbBarInfo& bar = *pRow->mBars[i];

        bar.mHasLeftHandle = false;

        if ( !bar.IsFixed() )
        {
            if ( foundNotFixed )

                if ( bar.mpPrev &&
                     bar.mpPrev->IsFixed() )

                    bar.mHasLeftHandle = true;

            foundNotFixed = true;
        }
    }

    // pass from right to left (detect right-side handles)

    foundNotFixed = false;

    cbBarInfo* pBar = pRow->mBars[ pRow->mBars.Count() - 1 ];

    while( pBar )
    {
        pBar->mHasRightHandle = false;

        if ( !pBar->IsFixed() )
        {
            if ( foundNotFixed )

                if ( pBar->mpNext )

                     pBar->mHasRightHandle = true;

            foundNotFixed = true;
        }

        pBar = pBar->mpPrev;
    }
}

void cbRowLayoutPlugin::RelayoutNotFixedBarsAround( cbBarInfo* pTheBar, cbRowInfo* pRow )
{
    if ( !pTheBar->mpPrev )
    {
        if (  !pTheBar->IsFixed() )
        {
            // this bar the first in the row, move it's
            // left edge to the very left
            pTheBar->mBounds.width += pTheBar->mBounds.x;
            pTheBar->mBounds.x      = 0;
        }
    }
    else
        FitBarsToRange( 0, pTheBar->mBounds.x, pTheBar, pRow );

    if ( !pTheBar->mpNext )
    {
        if ( !pTheBar->IsFixed() )
        {
            // this bar is the last one, move it's
            // right edge to the very right

            pTheBar->mBounds.width = mpPane->mPaneWidth - pTheBar->mBounds.x;
        }
    }
    else
        FitBarsToRange( pTheBar->mBounds.x + pTheBar->mBounds.width, mpPane->mPaneWidth,
                        pTheBar, pRow
                      );
}

void cbRowLayoutPlugin::LayoutItemsVertically( cbRowInfo& row )
{
    size_t i;
    for ( i = 0; i != row.mBars.Count(); ++i )
    {
        cbBarInfo& bar = *row.mBars[i];

        bar.mBounds.y = row.mRowY;

        if ( !bar.IsFixed() )

            // make all not-fixed bars of equal height
            bar.mBounds.height = row.mRowHeight;

        if ( row.mHasUpperHandle )

            bar.mBounds.y += mpPane->mProps.mResizeHandleSize;
    }
}

int cbRowLayoutPlugin::CalcRowHeight( cbRowInfo& row )
{
    int maxHeight = 0;

    size_t i;
    for ( i = 0; i != row.mBars.Count(); ++i )

        maxHeight = wxMax( maxHeight, row.mBars[i]->mBounds.height );

    return maxHeight;
}

void cbRowLayoutPlugin::StickRightSideBars( cbBarInfo* pToBar )
{
    cbBarInfo* pBar  = pToBar->mpNext;
    cbBarInfo* pPrev = pToBar;

    while( pBar )
    {
        wxRect& cur  = pBar->mBounds;
        wxRect& prev = pPrev->mBounds;

        cur.x = prev.x + prev.width;

        pPrev = pBar;
        pBar  = pBar->mpNext;
    }
}

void cbRowLayoutPlugin::SlideLeftSideBars( cbBarInfo* pTheBar )
{
    // shift left-side-bars to the left (with respect to "theBar"),
    // so that they would not obscured by each other

    cbBarInfo* pBar  = pTheBar->mpPrev;
    cbBarInfo* pPrev = pTheBar;

    while( pBar )
    {
        wxRect& cur  = pBar->mBounds;
        wxRect& prev = pPrev->mBounds;

        if ( cur.x + cur.width > prev.x )

            cur.x = prev.x - cur.width;

        pPrev = pBar;
        pBar  = pBar->mpPrev;
    }
}

void cbRowLayoutPlugin::SlideRightSideBars( cbBarInfo* pTheBar )
{
    // shift right-side-bars to the right (with respect to "theBar"),
    // so that they would not be obscured by each other

    cbBarInfo* pBar  = pTheBar->mpNext;
    cbBarInfo* pPrev = pTheBar;

    while( pBar )
    {
        wxRect& cur  = pBar->mBounds;
        wxRect& prev = pPrev->mBounds;

        if ( cur.x < prev.x + prev.width )

            cur.x = prev.x + prev.width;

        pPrev = pBar;
        pBar  = pBar->mpNext;
    }
}

void cbRowLayoutPlugin::ShiftLeftTrashold( cbBarInfo* WXUNUSED(pTheBar), cbRowInfo& row )
{
    wxRect& first = row.mBars[0]->mBounds;

    if ( first.x < 0 )
    {
        row.mBars[0]->mBounds.x = 0;

        SlideRightSideBars( row.mBars[0] );
    }
}

void cbRowLayoutPlugin::ShiftRightTrashold( cbBarInfo* pTheBar, cbRowInfo& row )
{
    wxRect& theBar = pTheBar->mBounds;

    do
    {
        cbBarInfo* pBar = pTheBar;

        // calculate free spece on the left side

        int leftFreeSpc = 0;

        while( pBar )
        {
            wxRect& cur = pBar->mBounds;

            if ( pBar->mpPrev )
            {
                wxRect& prev = pBar->mpPrev->mBounds;

                leftFreeSpc += cur.x - prev.x - prev.width;
            }
            else
                leftFreeSpc += cur.x;

            if ( cur.x < 0 )
            {
                leftFreeSpc = 0;
                break;
            }

            pBar = pBar->mpPrev;
        }

        pBar = pTheBar;

        int rightOverflow = 0;

        if ( pTheBar->IsFixed() )

            while( pBar )
            {
                if ( !pBar->mpNext )
                {
                    wxRect& cur = pBar->mBounds;

                    if ( cur.x + cur.width > mpPane->mPaneWidth )

                        rightOverflow = cur.x + cur.width - mpPane->mPaneWidth;
                }

                pBar = pBar->mpNext;
            }

        if ( rightOverflow > 0 )
        {
            if ( leftFreeSpc <= 0 ) return;

            if ( pTheBar->mpNext )
            {
                wxRect& next = pTheBar->mpNext->mBounds;

                // if there's enough space on the left, move over one half-obscured
                // bar from the right to the left side with respect to "theBar"

                if ( next.width < leftFreeSpc )
                {
                    cbBarInfo* pNext = pTheBar->mpNext;

                    row.mBars.Remove( pNext );

                    row.mBars.Insert( pNext, row.mBars.Index( pTheBar ) );

                    next.x = theBar.x - next.width;

                    // re-setup mpPrev/mpNext references after insertion

                    mpPane->InitLinksForRow( &row );

                    // tighten things

                    StickRightSideBars( pTheBar );
                    SlideLeftSideBars ( pTheBar );

                    continue;
                }
            }

            int leftShift = ( rightOverflow > leftFreeSpc )
                            ? leftFreeSpc
                            : rightOverflow;

            theBar.x -= leftShift;

            StickRightSideBars( pTheBar );
            SlideLeftSideBars ( pTheBar );

            break;

        } // end of if ( rightOverflow )
        else
            break;

    } while(1);
}

void cbRowLayoutPlugin::InsertBefore( cbBarInfo* pBeforeBar,
                                      cbBarInfo* pTheBar,
                                      cbRowInfo& row        )
{
    if ( pBeforeBar )

        row.mBars.Insert( pTheBar, row.mBars.Index( pBeforeBar ) );
    else
        row.mBars.Add( pTheBar );

    pTheBar->mpRow = &row;
}

void cbRowLayoutPlugin::DoInsertBar( cbBarInfo* pTheBar, cbRowInfo& row )
{
    wxRect& theBar = pTheBar->mBounds;

    /* OLD STUFF::
    if ( theBar.x < 0 && !node_to_bar( pTheBar ).IsFixed() )
    {