/*
 * Traces the outline of the search block structures
 * The entire block follows the cursor
 */
void DrawMovingBlockOutlines( EDA_DRAW_PANEL* aPanel, wxDC* aDC, const wxPoint& aPosition,
                              bool aErase )
{
    SCH_DRAW_PANEL*    panel =static_cast<SCH_DRAW_PANEL*>( aPanel );
    LIB_EDIT_FRAME*    frame = (LIB_EDIT_FRAME*) aPanel->GetParent();
    KIGFX::SCH_VIEW*   view = panel->GetView();
    KIGFX::VIEW_GROUP* preview = view->GetPreview();

    BASE_SCREEN*       screen = aPanel->GetScreen();
    BLOCK_SELECTOR*    block = &screen->m_BlockLocate;
    LIB_PART*          component = frame->GetCurPart();

    if( component == NULL )
        return;

    block->SetMoveVector( frame->GetCrossHairPosition( true ) - block->GetLastCursorPosition() );

    preview->Clear();
    view->SetVisible( preview, true );

    for( unsigned ii = 0; ii < block->GetCount(); ii++ )
    {
        LIB_ITEM* libItem = (LIB_ITEM*) block->GetItem( ii );
        LIB_ITEM* copy = static_cast<LIB_ITEM*>( libItem->Clone() );

        copy->Move( copy->GetPosition() + block->GetMoveVector() );
        copy->SetFlags( IS_MOVED );
        preview->Add( copy );

        view->Hide( libItem );
    }

    view->Update( preview );
}
/*
 * Draw (on m_panelShowPin) the pin currently edited
 * accroding to current settings in dialog
 */
void DIALOG_LIB_EDIT_PIN::OnPaintShowPanel( wxPaintEvent& event )
{
    wxPaintDC    dc( m_panelShowPin );
    wxSize dc_size = dc.GetSize();
    dc.SetDeviceOrigin( dc_size.x / 2, dc_size.y / 2 );

    // Give a parent to m_dummyPin only from draw purpose.
    // In fact m_dummyPin should not have a parent, but draw functions need a parent
    // to know some options, about pin texts
    LIB_EDIT_FRAME* libframe = (LIB_EDIT_FRAME*) GetParent();
    m_dummyPin->SetParent( libframe->GetCurPart() );

    // Calculate a suitable scale to fit the available draw area
    EDA_RECT bBox = m_dummyPin->GetBoundingBox();
    double xscale    = (double) dc_size.x / bBox.GetWidth();
    double yscale = (double) dc_size.y / bBox.GetHeight();
    double scale = std::min( xscale, yscale );

    // Give a 10% margin
    scale *= 0.9;
    dc.SetUserScale( scale, scale );

    wxPoint offset = -bBox.Centre();

    GRResetPenAndBrush( &dc );

    // This is a flag for m_dummyPin->Draw
    uintptr_t flags = uintptr_t( PIN_DRAW_TEXTS | PIN_DRAW_DANGLING );

    m_dummyPin->Draw( NULL, &dc, offset, COLOR4D::UNSPECIFIED, GR_COPY,
                      (void*)flags, DefaultTransform );

    m_dummyPin->SetParent(NULL);

    event.Skip();
}