controlbar.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

void cbDockPane::PaintPaneDecorations( wxDC& dc )
{
    cbDrawPaneDecorEvent evt( dc, this );

    mpLayout->FirePluginEvent( evt );
}

void cbDockPane::PaintPane( wxDC& dc )
{
    size_t i;

    PaintPaneBackground( dc );

    // first decorations
    for ( i = 0; i != mRows.Count(); ++i )
    {
        PaintRowBackground( mRows[i], dc );
        PaintRowDecorations( mRows[i], dc );
    }

    // than handles
    for ( i = 0; i != mRows.Count(); ++i )
        PaintRowHandles( mRows[i], dc );

    // and finally
    PaintPaneDecorations( dc );
}

void cbDockPane::SizeBar( cbBarInfo* pBar )
{
    cbSizeBarWndEvent evt( pBar, this );

    mpLayout->FirePluginEvent( evt );
    return;
}

void cbDockPane::SizeRowObjects( cbRowInfo* pRow )
{
    size_t i;
    for ( i = 0; i != pRow->mBars.Count(); ++i )
        SizeBar( pRow->mBars[i] );
}

void cbDockPane::SizePaneObjects()
{
    size_t i;
    for ( i = 0; i != mRows.Count(); ++i )
        SizeRowObjects( mRows[i] );
}

wxDC* cbDockPane::StartDrawInArea( const wxRect& area )
{
    wxDC* pDc = 0;

    cbStartDrawInAreaEvent evt( area, &pDc, this );

    mpLayout->FirePluginEvent( evt );

    return pDc;
}

void cbDockPane::FinishDrawInArea( const wxRect& area )
{
    cbFinishDrawInAreaEvent evt( area, this );

    mpLayout->FirePluginEvent( evt );
}

bool cbDockPane::IsFixedSize( cbBarInfo* pInfo )
{
    return ( pInfo->mDimInfo.mIsFixed );
}

int cbDockPane::GetNotFixedBarsCount( cbRowInfo* pRow )
{
    int cnt = 0;

    size_t i;
    for ( i = 0; i != pRow->mBars.Count(); ++i )
    {
        if ( !pRow->mBars[i]->IsFixed() )
            ++cnt;
    }

    return cnt;
}

void cbDockPane::RemoveBar( cbBarInfo* pBar )
{
    bool needsRestoring = mProps.mNonDestructFrictionOn &&
                          mpStoredRow == pBar->mpRow;

    cbRemoveBarEvent evt( pBar, this );

    mpLayout->FirePluginEvent( evt );

    if ( needsRestoring )
    {
        SetRowShapeData( mpStoredRow, &mRowShapeData );

        mpStoredRow = NULL;
    }
}

void cbDockPane::SyncRowFlags( cbRowInfo* pRow )
{
    // setup mHasOnlyFixedBars flag for the row information
    pRow->mHasOnlyFixedBars = true;

    pRow->mNotFixedBarsCnt = 0;

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

        bar.mpRow = pRow;

        if ( !bar.IsFixed() )
        {
            pRow->mHasOnlyFixedBars = false;
            ++pRow->mNotFixedBarsCnt;
        }
    }
}

void cbDockPane::FrameToPane( int* x, int* y )
{
    *x -= mLeftMargin;
    *y -= mTopMargin;

    if ( mAlignment == FL_ALIGN_TOP ||
         mAlignment == FL_ALIGN_BOTTOM
       )
    {
        *x -= mBoundsInParent.x;
        *y -= mBoundsInParent.y;
    }
    else
    {
        int rx = *x, ry = *y;

        *x = ry - mBoundsInParent.y;

        *y = rx - mBoundsInParent.x;
    }
}

void cbDockPane::PaneToFrame( int* x, int* y )
{
    if ( mAlignment == FL_ALIGN_TOP ||
         mAlignment == FL_ALIGN_BOTTOM
       )
    {
        *x += mBoundsInParent.x;
        *y += mBoundsInParent.y;
    }
    else
    {
        int rx = *x, ry = *y;

        *x = ry + mBoundsInParent.x;

        *y = mBoundsInParent.y + rx;
    }

    *x += mLeftMargin;
    *y += mTopMargin;
}

void cbDockPane::FrameToPane( wxRect* pRect )
{
    wxPoint upperLeft ( pRect->x, pRect->y );
    wxPoint lowerRight( pRect->x + pRect->width,
                        pRect->y + pRect->height );

    FrameToPane( &upperLeft.x,  &upperLeft.y  );
    FrameToPane( &lowerRight.x, &lowerRight.y );

    pRect->x = wxMin(upperLeft.x,lowerRight.x);
    pRect->y = wxMin(upperLeft.y,lowerRight.y);

    pRect->width  = abs( lowerRight.x - upperLeft.x );
    pRect->height = abs( lowerRight.y - upperLeft.y );
}

void cbDockPane::PaneToFrame( wxRect* pRect )
{
    wxPoint upperLeft ( pRect->x, pRect->y );
    wxPoint lowerRight( pRect->x + pRect->width,
                        pRect->y + pRect->height );

    PaneToFrame( &upperLeft.x,  &upperLeft.y  );
    PaneToFrame( &lowerRight.x, &lowerRight.y );

    //wxRect newRect = wxRect( upperLeft, lowerRight );

    pRect->x = wxMin(upperLeft.x,lowerRight.x);
    pRect->y = wxMin(upperLeft.y,lowerRight.y);

    pRect->width  = abs( lowerRight.x - upperLeft.x );
    pRect->height = abs( lowerRight.y - upperLeft.y );
}

int cbDockPane::GetRowAt( int paneY )
{
    if ( paneY < 0 )
        return -1;

    int curY = 0;

    size_t i = 0;

    for ( ; i != mRows.Count(); ++i )
    {
        int rowHeight = mRows[i]->mRowHeight;

        int third = rowHeight/3;

        if ( paneY >= curY && paneY < curY + third )
            return i-1;

        if ( paneY >= curY + third && paneY < curY + rowHeight - third )
            return i;

        curY += rowHeight;
    }

    return i;
}

int cbDockPane::GetRowAt( int upperY, int lowerY )
{
    /*
    // OLD STUFF::
    int range    = lowerY - upperY;
    int oneThird = range / 3;

    wxNode* pRow = mRows.GetFirst();
    int row = 0;
    int curY = 0;

    if ( lowerY <= 0 ) return -1;

    while( pRow )
    {
        int rowHeight = GetRowHeight( (wxList*)pRow->GetData() );

        if ( upperY >= curY &&
             lowerY < curY ) return row;

        if ( upperY <= curY &&
             lowerY >= curY &&
             curY - upperY >= oneThird ) return row-1;

        if ( ( upperY <  curY + rowHeight &&
               lowerY >= curY + rowHeight &&
               curY + rowHeight - lowerY >= oneThird )
           )
            return row+1;

        if ( lowerY <= curY + rowHeight ) return row;

        ++row;
        curY += rowHeight;
        pRow = pRow->GetNext();
    }
    */

    int mid = upperY + (lowerY - upperY)/2;

    if ( mid < 0 )
        return -1;

    int curY = 0;
    size_t i = 0;

    for ( ; i != mRows.Count(); ++i )
    {
        int rowHeight = mRows[i]->mRowHeight;

        if ( mid >= curY && mid < curY + rowHeight ) return i;

        curY += rowHeight;
    }

    return i;
}

int cbDockPane::GetRowY( cbRowInfo* pRow )
{
    int curY = 0;

    size_t i;
    for ( i = 0; i != mRows.Count(); ++i )
    {
        if ( mRows[i] == pRow )
            break;

        curY += mRows[i]->mRowHeight;
    }

    return curY;
}

bool cbDockPane::HasNotFixedRowsAbove( cbRowInfo* pRow )
{
    while ( pRow->mpPrev )
    {
        pRow = pRow->mpPrev;

        if ( pRow->mHasOnlyFixedBars )

            return true;
    }

    return false;
}

bool cbDockPane::HasNotFixedRowsBelow( cbRowInfo* pRow )
{
    while( pRow->mpNext )
    {
        pRow = pRow->mpNext;

        if ( pRow->mHasOnlyFixedBars )

            return true;
    }

    return false;
}

bool cbDockPane::HasNotFixedBarsLeft( cbBarInfo* pBar )
{
    while( pBar->mpPrev )
    {
        pBar = pBar->mpPrev;

        if ( pBar->IsFixed() )

            return true;
    }

    return false;
}

bool cbDockPane::HasNotFixedBarsRight( cbBarInfo* pBar )
{
    while( pBar->mpNext )
    {
        pBar = pBar->mpNext;

        if ( pBar->IsFixed() )

            return true;
    }

    return false;
}

void cbDockPane::CalcLengthRatios( cbRowInfo* pInRow )
{
    size_t i;

    int totalWidth = 0;

    // calc current-maximal-total-length of all maximized bars

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

        if ( !bar.IsFixed() )
            totalWidth += bar.mBounds.width;
    }

    // set up percentages of occupied space for each maximized bar

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

        if ( !bar.IsFixed() )
            bar.mLenRatio = double(bar.mBounds.width)/double(totalWidth);
    }
}

void cbDockPane::RecalcRowLayout( cbRowInfo* pRow )
{
    cbLayoutRowEvent evt( pRow, this );

    mpLayout->FirePluginEvent( evt );
}

void cbDockPane::ExpandBar( cbBarInfo* pBar )
{
    mpLayout->GetUpdatesManager().OnStartChanges();

    if ( !pBar->mpRow->mpExpandedBar )
    {
        // save ratios only when there arent any bars expanded yet

        cbArrayFloat& ratios = pBar->mpRow->mSavedRatios;

        ratios.Clear();
        ratios.Alloc( pBar->mpRow->mNotFixedBarsCnt );

        cbBarInfo* pCur = pBar->mpRow->mBars[0];

        while( pCur )
        {
            if ( !pCur->IsFixed() )
            {
                ratios.Add( 0.0 );
                ratios[ ratios.GetCount() - 1 ] = pCur->mLenRatio;
            }

            pCur = pCur->mpNext;
        }
    }

    cbBarInfo* pCur = pBar->mpRow->mBars[0];

    while( pCur )
    {
        pCur->mLenRatio = 0.0; // minimize the rest

        pCur = pCur->mpNext;
    }

    pBar->mLenRatio     = 1.0; // 100%
    pBar->mBounds.width = 0;

    pBar->mpRow->mpExpandedBar = pBar;

    mpLayout->RecalcLayout( false );

    mpLayout->GetUpdatesManager().OnFinishChanges();
    mpLayout->GetUpdatesManager().UpdateNow();
}

void cbDockPane::ContractBar( cbBarInfo* pBar )
{
    mpLayout->GetUpdatesManager().OnStartChanges();

    // FIXME: What's the purpose of this???
    // double ratio = 1.0/ double( pBar->mpRow->mNotFixedBarsCnt );

    // restore ratios which were present before expansion

    cbBarInfo* pCur = pBar->mpRow->mBars[0];

    cbArrayFloat& ratios = pBar->mpRow->mSavedRatios;

    size_t i = 0;

    while( pCur )
    {
        if ( !pCur->IsFixed() )
        {
            pCur->mLenRatio = ratios[i];
            ++i;
        }

        pCur = pCur->mpNext;
    }

    ratios.Clear();
    ratios.Shrink();

    pBar->mpRow->mpExpandedBar = NULL;

    mpLayout->RecalcLayout( false );

    mpLayout->GetUpdatesManager().OnFinishChanges();
    mpLayout->GetUpdatesManager().UpdateNow();
}

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

        if ( i == 0 )
            bar.mpPrev = NULL;
        else
            bar.mpPrev = pRow->mBars[i-1];

        if ( i == pRow->mBars.Count() - 1 )
            bar.mpNext = NULL;
        else
            bar.mpNext = pRow->mBars[i+1];
    }
}

void cbDockPane::InitLinksForRows()
{
    size_t i;
    for ( i = 0; i != mRows.Count(); ++i )
    {
        cbRowInfo& row = *mRows[i];

        if ( i == 0 )
            row.mpPrev = NULL;
        else
            row.mpPrev = mRows[i-1];

        if ( i == mRows.Count() - 1 )
            row.mpNext = NULL;
        else
            row.mpNext = mRows[i+1];
    }
}

void cbDockPane::DoInsertBar( cbBarInfo* pBar, int rowNo )
{
    cbRowInfo* pRow;

    if ( rowNo == -1 || rowNo >= (int)mRows.Count() )
    {
        pRow = new cbRowInfo();

        if ( rowNo == -1 && mRows.Count() )

            mRows.Insert( pRow, 0 );
        else
            mRows.Add( pRow );

        InitLinksForRows();
    }
    else
    {
        pRow = mRows[rowNo];

        if ( mProps.mNonDestructFrictionOn == true )
        {
            // store original shape of the row (before the bar is inserted)

            mpStoredRow = pRow;

            GetRowShapeData( mpStoredRow, &mRowShapeData );
        }
    }

    if ( pRow->mBars.Count() )

        pRow->mpExpandedBar = NU