rowdragpl.cpp

wxGTK 是 wxWidgets 的 linux GTK+ (>2.2.3)版本。wxWidgets 是一个跨平台的 GUI 框架

{
    int xOfs = (inRect.width - ICON_TRIAN_WIDTH)/2;

    wxBrush br( mTrianInnerColor, wxSOLID );

    dc.SetBrush( br );
    dc.SetPen( mpLayout->mBlackPen );

    wxPoint points[3];
    points[0].x = inRect.x + xOfs;
    points[0].y = inRect.y;
    points[1].x = inRect.x + xOfs + ICON_TRIAN_WIDTH;
    points[1].y = inRect.y;
    points[2].x = inRect.x + xOfs + ICON_TRIAN_WIDTH/2;
    points[2].y = inRect.y + ICON_TRIAN_HEIGHT;

    dc.DrawPolygon( 3, points );

    // higlight upper-right edge of triangle
    dc.SetPen( mpLayout->mLightPen );
    dc.DrawLine( points[2].x, points[2].y,
                 points[1].x, points[1].y );

    dc.SetBrush( wxNullBrush );
}

void cbRowDragPlugin::DrawTrianRight( wxRect& inRect, wxDC& dc )
{
    int yOfs = (inRect.height - ICON_TRIAN_WIDTH)/2;

    wxBrush br( mTrianInnerColor, wxSOLID );

    dc.SetBrush( br );
    dc.SetPen( mpLayout->mBlackPen );

    wxPoint points[3];
    points[0].x = inRect.x;
    points[0].y = inRect.y + yOfs + ICON_TRIAN_WIDTH;
    points[1].x = inRect.x;
    points[1].y = inRect.y + yOfs;
    points[2].x = inRect.x + ICON_TRIAN_HEIGHT;
    points[2].y = inRect.y + yOfs + ICON_TRIAN_WIDTH/2;

    dc.DrawPolygon( 3, points );

    // higlight upper-right edge of triangle
    dc.SetPen( mpLayout->mLightPen );
    dc.DrawLine( points[0].x, points[0].y,
                 points[2].x, points[2].y );

    dc.SetBrush( wxNullBrush );
}

void cbRowDragPlugin::Draw3DPattern( wxRect& inRect, wxDC& dc )
{
    for( int y = inRect.y; y < inRect.y + inRect.height; y+=3 )
    
        for( int x = inRect.x; x < inRect.x + inRect.width; x+=3 )
        {
            dc.SetPen( mpLayout->mLightPen );
            dc.DrawPoint( x,y );
            dc.SetPen( mpLayout->mBlackPen );
            dc.DrawPoint( x+1, y+1 );
        }
}

void cbRowDragPlugin::DrawRombShades( wxPoint& p1, wxPoint& p2, 
                                      wxPoint& p3, wxPoint& p4,
                                      wxDC& dc )
{
    dc.SetPen( mpLayout->mLightPen );
    dc.DrawLine( p1.x, p1.y, p2.x, p2.y );
    dc.DrawLine( p2.x, p2.y, p3.x, p3.y );
    dc.SetPen( mpLayout->mDarkPen );
    dc.DrawLine( p3.x, p3.y, p4.x, p4.y );
    dc.DrawLine( p4.x, p4.y, p1.x, p1.y );
}

void cbRowDragPlugin::DrawOrtoRomb( wxRect& inRect, wxDC& dc, const wxBrush& bkBrush )
{
    dc.SetBrush( bkBrush );
    dc.SetPen( mpLayout->mBlackPen );

    wxPoint points[4];

    if ( inRect.width > inRect.height )
    {
        // horizontal orienation
        points[0].x = inRect.x;
        points[0].y = inRect.y + inRect.height;
        points[1].x = inRect.x;
        points[1].y = inRect.y;
        points[2].x = inRect.x + inRect.width;
        points[2].y = inRect.y;
        points[3].x = inRect.x + inRect.width - COLLAPSED_ICON_HEIGHT;
        points[3].y = inRect.y + inRect.height;

        dc.DrawPolygon( 4, points );

        // squeeze romb's bounds to create an inner-shade shape
        ++points[0].x;
        --points[0].y;
        ++points[1].x;
        ++points[1].y;
        --points[2].x; --points[2].x;
        ++points[2].y;
        --points[3].y;

        DrawRombShades( points[0], points[1], points[2], points[3], dc );
    }
    else
    {
        // vertical orientation
        points[0].x = inRect.x + inRect.width;
        points[0].y = inRect.y + inRect.height;
        points[1].x = inRect.x;
        points[1].y = inRect.y + inRect.height;
        points[2].x = inRect.x;
        points[2].y = inRect.y;
        points[3].x = inRect.x + inRect.width;
        points[3].y = inRect.y + COLLAPSED_ICON_HEIGHT;

        dc.DrawPolygon( 4, points );

        // squeeze romb's bounds to create an inner-shade shape
        --points[0].y ;
        --points[0].x;
        ++points[1].x;
        --points[1].y;
        ++points[2].y; ++points[2].y;
        ++points[2].x;
        --points[3].x;

        DrawRombShades( points[1], points[2], points[3], points[0], dc );
    }

    dc.SetBrush( wxNullBrush );
}

void cbRowDragPlugin::DrawRomb( wxRect& inRect, wxDC& dc, const wxBrush& bkBrush )
{
    wxPoint points[4];

    dc.SetBrush( bkBrush );
    dc.SetPen( mpLayout->mBlackPen );

    if ( inRect.width > inRect.height )
    {
        // horizontal orientation
        points[0].x = inRect.x;
        points[0].y = inRect.y + inRect.height;
        points[1].x = inRect.x + COLLAPSED_ICON_HEIGHT;
        points[1].y = inRect.y;
        points[2].x = inRect.x + inRect.width;
        points[2].y = inRect.y;
        points[3].x = inRect.x + inRect.width - COLLAPSED_ICON_HEIGHT;
        points[3].y = inRect.y + inRect.height;

        dc.DrawPolygon( 4, points );

        // squeeze romb's bounds to create an inner-shade shape
        ++points[0].x ;++points[0].x ;
        --points[0].y;
        ++points[1].y;
        --points[2].x; --points[2].x;
        ++points[2].y;
        //--points[3].x ;
        --points[3].y;

        DrawRombShades( points[0], points[1], points[2], points[3], dc );

    }
    else
    {
        // vertical orientation
        points[0].x = inRect.x + inRect.width;
        points[0].y = inRect.y + inRect.height;
        points[1].x = inRect.x;
        points[1].y = inRect.y + inRect.height - COLLAPSED_ICON_HEIGHT;
        points[2].x = inRect.x;
        points[2].y = inRect.y;
        points[3].x = inRect.x + inRect.width;
        points[3].y = inRect.y + COLLAPSED_ICON_HEIGHT;

        dc.DrawPolygon( 4, points );

        // squeeze romb's bounds to create an inner-shade shape
        --points[0].y ;--points[0].y ;
        --points[0].x;
        ++points[1].x;
        ++points[2].y; ++points[2].y;
        ++points[2].x;
        --points[3].x;

        DrawRombShades( points[1], points[2], points[3], points[0], dc );
    }

    dc.SetBrush( wxNullBrush );
}

void cbRowDragPlugin::DrawRectShade( wxRect& inRect, wxDC& dc, 
                                     int level, const wxPen& upperPen, const wxPen& lowerPen )
{
    // upper shade
    dc.SetPen( upperPen );
    dc.DrawLine( inRect.x - level, 
                 inRect.y - level, 
                 inRect.x + inRect.width - 1 + level, 
                 inRect.y - level);
    dc.DrawLine( inRect.x - level, inRect.y - level,
                 inRect.x - level, inRect.y + inRect.height - 1 + level );

    // lower shade
    dc.SetPen( lowerPen );
    dc.DrawLine( inRect.x - level, 
                 inRect.y + inRect.height - 1 + level,
                 inRect.x + inRect.width  + level,
                 inRect.y + inRect.height - 1 + level);
    dc.DrawLine( inRect.x + inRect.width - 1 + level,
                 inRect.y - level,
                 inRect.x + inRect.width - 1 + level,
                 inRect.y + inRect.height + level);

    dc.SetBrush( wxNullBrush );
}

void cbRowDragPlugin::Draw3DRect( wxRect& inRect, wxDC& dc, const wxBrush& bkBrush )
{
    dc.SetPen( mpLayout->mNullPen );
    dc.SetBrush( bkBrush );

    dc.DrawRectangle( inRect.x, inRect.y,
                      inRect.width, inRect.height );

    DrawRectShade( inRect, dc, 0, mpLayout->mLightPen, mpLayout->mDarkPen );
}

int  cbRowDragPlugin::GetCollapsedIconsPos()
{
    RowArrayT& rows = mpPane->GetRowList();

    if ( rows.GetCount() == 0 ) 
    {
        if ( mpPane->IsHorizontal() )
            
            return mpPane->mBoundsInParent.y + mpPane->mTopMargin;
        else
            return mpPane->mBoundsInParent.x + mpPane->mLeftMargin;
    }

    wxRect& bounds = rows[ rows.GetCount() - 1 ]->mBoundsInParent;

    if ( mpPane->IsHorizontal() )

        return bounds.y + bounds.height + 1;
    else
        return bounds.x + bounds.width  + 1;

}

void cbRowDragPlugin::GetRowHintRect( cbRowInfo* pRow, wxRect& rect )
{
    wxRect& bounds = pRow->mBoundsInParent;

    if ( mpPane->IsHorizontal() )
    {
        rect.x = bounds.x - ROW_DRAG_HINT_WIDTH - 1;
        rect.y = bounds.y;
        rect.width = ROW_DRAG_HINT_WIDTH;
        rect.height = bounds.height;
    }
    else
    {
        rect.x = bounds.x;
        rect.y = bounds.y + bounds.height + 1;
        rect.width = bounds.width;
        rect.height = ROW_DRAG_HINT_WIDTH;
    }
}

void cbRowDragPlugin::GetCollapsedInconRect( int iconIdx, wxRect& rect )
{
    int upper = GetCollapsedIconsPos();

    int right = (iconIdx == 0 ) 
                ? 0 : iconIdx * (COLLAPSED_ICON_WIDTH - COLLAPSED_ICON_HEIGHT);

    if ( mpPane->IsHorizontal() )
    {
        rect.x = mpPane->mBoundsInParent.x + mpPane->mLeftMargin - ROW_DRAG_HINT_WIDTH - 1
                 + right;

        rect.y = upper;
        rect.width  = COLLAPSED_ICON_WIDTH;
        rect.height = COLLAPSED_ICON_HEIGHT;
    }
    else
    {
         rect.x = upper;
         rect.y = mpPane->mBoundsInParent.y + mpPane->mBoundsInParent.height 
                 - mpPane->mBottomMargin + ROW_DRAG_HINT_WIDTH + 1
                 - right - COLLAPSED_ICON_WIDTH;

        rect.height = COLLAPSED_ICON_WIDTH;
        rect.width  = COLLAPSED_ICON_HEIGHT;
    }
}

/*** overridables ***/

void cbRowDragPlugin::DrawCollapsedRowIcon( int index, wxDC& dc, bool isHighlighted )
{
    wxRect rect;
    GetCollapsedInconRect( index, rect );

    wxBrush  hiBrush ( mHightColor, wxSOLID );
    wxBrush  lowBrush( mLowColor,   wxSOLID );
    wxBrush& curBrush = ( isHighlighted ) ? hiBrush : lowBrush;

    if ( mpPane->IsHorizontal() )
    {                 
        if ( index == 0 )

            DrawOrtoRomb( rect, dc, curBrush );
        else
            DrawRomb( rect, dc, curBrush );

        int triOfs = (index == 0) ? TRIANGLE_OFFSET : TRIANGLE_OFFSET + COLLAPSED_ICON_HEIGHT;

        wxRect triRect;
        triRect.x = triOfs + rect.x;

        triRect.width = ICON_TRIAN_HEIGHT;
        triRect.y = rect.y;
        triRect.height = rect.height;

        DrawTrianRight( triRect, dc );

        wxRect patRect;
        patRect.x      = triOfs + ICON_TRIAN_HEIGHT + TRIANGLE_TO_PAT_GAP + rect.x;
        patRect.y      = rect.y + PAT_OFFSET; 
        patRect.width  = rect.width - (patRect.x - rect.x) - COLLAPSED_ICON_HEIGHT - PAT_OFFSET;
        patRect.height = rect.height - PAT_OFFSET*2;

        Draw3DPattern( patRect, dc );
    }
    else
    {
        if ( index == 0 )

            DrawOrtoRomb( rect, dc, curBrush );
        else
            DrawRomb( rect, dc, curBrush );

        int triOfs = (index == 0) 
                     ? TRIANGLE_OFFSET + ICON_TRIAN_HEIGHT
                     : TRIANGLE_OFFSET + COLLAPSED_ICON_HEIGHT + ICON_TRIAN_HEIGHT;

        wxRect triRect;
        triRect.y      = rect.y + rect.height - triOfs;
        triRect.x      = rect.x;
        triRect.width  = rect.width;
        triRect.height = ICON_TRIAN_HEIGHT;

        DrawTrianUp( triRect, dc );

        wxRect patRect;
        patRect.y      = rect.y + COLLAPSED_ICON_HEIGHT + PAT_OFFSET;
        patRect.x      = rect.x + PAT_OFFSET; 
        patRect.width  = rect.width - 2*PAT_OFFSET ;
        patRect.height = rect.height - triOfs - 2*PAT_OFFSET - COLLAPSED_ICON_HEIGHT;

        Draw3DPattern( patRect, dc );
    }
}

void cbRowDragPlugin::DrawRowDragHint( cbRowInfo* pRow , wxDC& dc, bool isHighlighted )
{
    wxRect rect;
    GetRowHintRect( pRow, rect );

    wxBrush  hiBrush ( mHightColor, wxSOLID );
    wxBrush  lowBrush( mLowColor,   wxSOLID );
    wxBrush& curBrush = ( isHighlighted ) ? hiBrush : lowBrush;

    Draw3DRect( rect, dc, curBrush );

    if ( mpPane->IsHorizontal() )
    {
        wxRect triRect;
        triRect.y       = rect.y + TRIANGLE_OFFSET;
        triRect.x       = rect.x;
        triRect.width  = rect.width;
        triRect.height = ICON_TRIAN_HEIGHT;

        DrawTrianDown( triRect, dc );

        wxRect patRect;
        patRect.x      = rect.x + PAT_OFFSET;
        patRect.y      = rect.y + TRIANGLE_OFFSET + ICON_TRIAN_HEIGHT + TRIANGLE_TO_PAT_GAP;
        patRect.width  = rect.width - 2*PAT_OFFSET;
        patRect.height = rect.height - ( patRect.y - rect.y ) - PAT_OFFSET;
        Draw3DPattern( patRect, dc );

        dc.SetPen( mpLayout->mLightPen );
        dc.DrawLine( rect.x, rect.y + rect.height, rect.x + rect.width, rect.y + rect.height );
    }
    else
    {
        wxRect triRect;
        triRect.x       = rect.x + TRIANGLE_OFFSET;
        triRect.y       = rect.y;
        triRect.height = rect.height;
        triRect.width  = ICON_TRIAN_HEIGHT;

        DrawTrianRight( triRect, dc );

        wxRect patRect;
        patRect.y      = rect.y + PAT_OFFSET;
        patRect.x      = rect.x + TRIANGLE_OFFSET + ICON_TRIAN_HEIGHT + TRIANGLE_TO_PAT_GAP;
        patRect.height = rect.height - 2*PAT_OFFSET;
        patRect.width  = rect.width - ( patRect.x - rect.x ) - PAT_OFFSET;
        Draw3DPattern( patRect, dc );

        dc.SetPen( mpLayout->mLightPen );
        dc.DrawLine( rect.x + rect.width, rect.y, rect.x + rect.width, rect.y + rect.height );
    }
}

void cbRowDragPlugin::DrawRowsDragHintsBorder( wxDC& WXUNUSED(dc) )
{
    // FIXME:: what was that?
}

void cbRowDragPlugin::DrawCollapsedRowsBorder( wxDC& dc )
{
    int colRowOfs = GetCollapsedIconsPos();
    wxRect& bounds = mpPane->mBoundsInParent;

    wxBrush bkBrush( mpLayout->mGrayPen.GetColour(), wxSOLID );
    dc.SetBrush( bkBrush );
    dc.SetPen( mpLayout->mDarkPen );

    if ( mpPane->IsHorizontal() )
    
        dc.DrawRectangle( bounds.x + mpPane->mLeftMargin - ROW_DRAG_HINT_WIDTH - 1,
                          colRowOfs,
                          bounds.width - mpPane->mLeftMargin - mpPane->mRightMargin + 2 + ROW_DRAG_HINT_WIDTH,
                          COLLAPSED_ICON_HEIGHT + 1);
    else
        dc.DrawRectangle( colRowOfs,
                          bounds.y + mpPane->mTopMargin - 1,
                          COLLAPSED_ICON_HEIGHT + 1,
                          bounds.height - mpPane->mTopMargin - mpPane->mBottomMargin 
                          - ROW_DRAG_HINT_WIDTH - 2 );

    dc.SetBrush( wxNullBrush );
}

static inline bool rect_contains_point( const wxRect& rect, int x, int y )
{
    return ( x >= rect.x &&
             y >= rect.y &&
             x <  rect.x + rect.width  &&
             y <  rect.y + rect.height );
}

bool cbRowDragPlugin::HitTestCollapsedRowIcon( int iconIdx, const wxPoint& pos )
{
    wxRect bounds;
    GetCollapsedInconRect( iconIdx, bounds );

    return rect_contains_point( bounds, pos.x, pos.y );
}

bool cbRowDragPlugin::HitTestRowDragHint( cbRowInfo* pRow, const wxPoint& pos )
{
    wxRect bounds;
    GetRowHintRect( pRow, bounds );

    return rect_contains_point( bounds, pos.x, pos.y );
}