C++ SCH_ITEM::IsConnectable方法代码示例

void SCH_EDIT_FRAME::CheckListConnections( PICKED_ITEMS_LIST& aItemsList, bool aAppend )
{
    std::vector< wxPoint > pts;
    std::vector< wxPoint > connections;

    GetSchematicConnections( connections );
    for( unsigned ii = 0; ii < aItemsList.GetCount(); ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*) aItemsList.GetPickedItem( ii );
        std::vector< wxPoint > new_pts;

        if( !item->IsConnectable() )
            continue;

        item->GetConnectionPoints( new_pts );
        pts.insert( pts.end(), new_pts.begin(), new_pts.end() );

        // If the item is a line, we also add any connection points from the rest of the schematic
        // that terminate on the line after it is moved.
        if( item->Type() == SCH_LINE_T )
        {
            SCH_LINE* line = (SCH_LINE*) item;
            for( auto i : connections )
                if( IsPointOnSegment( line->GetStartPoint(), line->GetEndPoint(), i ) )
                    pts.push_back( i );
        }
        else
        {
            // Clean up any wires that short non-wire connections in the list
            for( auto point = new_pts.begin(); point != new_pts.end(); point++ )
            {
                for( auto second_point = point + 1; second_point != new_pts.end(); second_point++ )
                {
                    aAppend |= TrimWire( *point, *second_point, aAppend );
                }
            }
        }
    }

    // We always have some overlapping connection points.  Drop duplicates here
    std::sort( pts.begin(), pts.end(),
            []( const wxPoint& a, const wxPoint& b ) -> bool
            { return a.x < b.x || (a.x == b.x && a.y < b.y); } );
    pts.erase( unique( pts.begin(), pts.end() ), pts.end() );

    for( auto point : pts )
    {
        if( GetScreen()->IsJunctionNeeded( point, true ) )
        {
            AddJunction( point, aAppend );
            aAppend = true;
        }
    }
}

void SCH_SCREEN::addConnectedItemsToBlock( const wxPoint& position )
{
    SCH_ITEM* item;
    ITEM_PICKER picker;
    bool addinlist = true;

    for( item = m_drawList.begin(); item; item = item->Next() )
    {
        picker.SetItem( item );

        if( !item->IsConnectable() || !item->IsConnected( position )
            || (item->GetFlags() & SKIP_STRUCT) )
            continue;

        if( item->IsSelected() && item->Type() != SCH_LINE_T )
            continue;

        // A line having 2 ends, it can be tested twice: one time per end
        if( item->Type() == SCH_LINE_T )
        {
            if( ! item->IsSelected() )      // First time this line is tested
                item->SetFlags( SELECTED | STARTPOINT | ENDPOINT );
            else      // second time (or more) this line is tested
                addinlist = false;

            SCH_LINE* line = (SCH_LINE*) item;

            if( line->GetStartPoint() == position )
                item->ClearFlags( STARTPOINT );
            else if( line->GetEndPoint() == position )
                item->ClearFlags( ENDPOINT );
        }
        else
            item->SetFlags( SELECTED );

        if( addinlist )
        {
            picker.SetFlags( item->GetFlags() );
            m_BlockLocate.GetItems().PushItem( picker );
        }
    }
}

bool SCH_EDIT_FRAME::DeleteItemAtCrossHair( wxDC* DC )
{
    SCH_ITEM*   item;
    SCH_SCREEN* screen = GetScreen();

    item = LocateItem( GetCrossHairPosition(), SCH_COLLECTOR::ParentItems );

    if( item )
    {
        bool itemHasConnections = item->IsConnectable();

        screen->SetCurItem( NULL );
        SetRepeatItem( NULL );
        DeleteItem( item );

        if( itemHasConnections )
            screen->TestDanglingEnds( m_canvas, DC );

        OnModify();
        return true;
    }

    return false;
}

void SCH_SCREEN::SelectBlockItems()
{
    PICKED_ITEMS_LIST* pickedlist = &m_BlockLocate.GetItems();

    if( pickedlist->GetCount() == 0 )
        return;

    ClearDrawingState();

    for( unsigned ii = 0; ii < pickedlist->GetCount(); ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*) pickedlist->GetPickedItem( ii );
        item->SetFlags( SELECTED );
    }

    if( !m_BlockLocate.IsDragging() )
        return;

    // Select all the items in the screen connected to the items in the block.
    // be sure end lines that are on the block limits are seen inside this block
    m_BlockLocate.Inflate( 1 );
    unsigned last_select_id = pickedlist->GetCount();

    for( unsigned ii = 0; ii < last_select_id; ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*)pickedlist->GetPickedItem( ii );
        item->SetFlags( IS_DRAGGED );

        if( item->Type() == SCH_LINE_T )
        {
            item->IsSelectStateChanged( m_BlockLocate );

            if( !item->IsSelected() )
            {   // This is a special case:
                // this selected wire has no ends in block.
                // But it was selected (because it intersects the selecting area),
                // so we must keep it selected and select items connected to it
                // Note: an other option could be: remove it from drag list
                item->SetFlags( SELECTED | SKIP_STRUCT );
                std::vector< wxPoint > connections;
                item->GetConnectionPoints( connections );

                for( size_t i = 0; i < connections.size(); i++ )
                    addConnectedItemsToBlock( connections[i] );
            }

            pickedlist->SetPickerFlags( item->GetFlags(), ii );
        }
        else if( item->IsConnectable() )
        {
            std::vector< wxPoint > connections;

            item->GetConnectionPoints( connections );

            for( size_t jj = 0; jj < connections.size(); jj++ )
                addConnectedItemsToBlock( connections[jj] );
        }
    }

    m_BlockLocate.Inflate( -1 );
}

void SCH_SCREEN::addConnectedItemsToBlock( const SCH_ITEM* aItem, const wxPoint& position )
{
    SCH_ITEM* item;
    ITEM_PICKER picker;

    for( item = m_drawList.begin(); item; item = item->Next() )
    {

        if( !item->IsConnectable() || ( item->GetFlags() & SKIP_STRUCT )
                || !item->CanConnect( aItem ) || item == aItem )
            continue;

        // A line having 2 ends, it can be tested twice: one time per end
        if( item->Type() == SCH_LINE_T )
        {
            SCH_LINE* line = (SCH_LINE*) item;

            if( !item->HitTest( position ) )
                continue;

            // First time through.  Flags set to denote an end that is not moving
            if( !item->IsSelected() )
                item->SetFlags( CANDIDATE | STARTPOINT | ENDPOINT );

            if( line->GetStartPoint() == position )
                item->ClearFlags( STARTPOINT );
            else if( line->GetEndPoint() == position )
                item->ClearFlags( ENDPOINT );
            else
                // This picks up items such as labels that can connect to the middle of a line
                item->ClearFlags( STARTPOINT | ENDPOINT );
        }
        // We want to move a mid-connected label or bus entry when the full line is being moved
        else if( !item->IsSelected()
                && aItem->Type() == SCH_LINE_T
                && !( aItem->GetFlags() & ( ENDPOINT | STARTPOINT ) ) )
        {
            std::vector< wxPoint > connections;
            item->GetConnectionPoints( connections );

            for( auto conn : connections )
            {
                if( aItem->HitTest( conn ) )
                {
                    item->SetFlags( CANDIDATE );
                    break;
                }
            }
        }

        if( item->IsSelected() )
            continue;

        if( ( item->GetFlags() & CANDIDATE ) || item->IsConnected( position ) ) // Deal with all non-line items
        {
            item->ClearFlags( CANDIDATE );
            item->SetFlags( SELECTED );
            picker.SetItem( item );
            picker.SetFlags( item->GetFlags() );
            m_BlockLocate.GetItems().PushItem( picker );
        }
    }
}

void SCH_SCREEN::SelectBlockItems()
{
    auto addConnections = [ this ]( SCH_ITEM* item ) -> void
    {
        std::vector< wxPoint > connections;
        item->GetConnectionPoints( connections );
        for( auto conn : connections )
            addConnectedItemsToBlock( item, conn );
    };

    PICKED_ITEMS_LIST* pickedlist = &m_BlockLocate.GetItems();

    if( pickedlist->GetCount() == 0 )
        return;

    ClearDrawingState();

    for( unsigned ii = 0; ii < pickedlist->GetCount(); ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*) pickedlist->GetPickedItem( ii );
        item->SetFlags( SELECTED );
    }

    if( !m_BlockLocate.IsDragging() )
        return;

    // Select all the items in the screen connected to the items in the block.
    // be sure end lines that are on the block limits are seen inside this block
    m_BlockLocate.Inflate( 1 );
    unsigned last_select_id = pickedlist->GetCount();

    for( unsigned ii = 0; ii < last_select_id; ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*)pickedlist->GetPickedItem( ii );
        item->SetFlags( IS_DRAGGED );

        if( item->Type() == SCH_LINE_T )
        {
            item->IsSelectStateChanged( m_BlockLocate );

            if( !item->IsSelected() )
            {   // This is a special case:
                // this selected wire has no ends in block.
                // But it was selected (because it intersects the selecting area),
                // so we must keep it selected and select items connected to it
                // Note: an other option could be: remove it from drag list
                item->SetFlags( SELECTED | SKIP_STRUCT );
                addConnections( item );
            }

            pickedlist->SetPickerFlags( item->GetFlags(), ii );
        }
        else if( item->IsConnectable() )
        {
            addConnections( item );
        }
    }

    // Select the items that are connected to a block object that was added
    // to our selection list in the last step.
    for( unsigned ii = last_select_id; ii < pickedlist->GetCount(); ii++ )
    {
        SCH_ITEM* item = (SCH_ITEM*)pickedlist->GetPickedItem( ii );

        if( item->Type() == SCH_COMPONENT_T ||
                item->Type() == SCH_BUS_BUS_ENTRY_T ||
                item->Type() == SCH_BUS_WIRE_ENTRY_T ||
                item->Type() == SCH_SHEET_T ||
                ( item->Type() == SCH_LINE_T && !( item->GetFlags() & ( ENDPOINT | STARTPOINT ) ) ) )
        {
            item->SetFlags( IS_DRAGGED );
            addConnections( item );
        }
    }

    m_BlockLocate.Inflate( -1 );
}

void SCH_EDIT_FRAME::addCurrentItemToList( wxDC* aDC )
{
    SCH_SCREEN* screen = GetScreen();
    SCH_ITEM*   item = screen->GetCurItem();

    wxCHECK_RET( item != NULL, wxT( "Cannot add current item to list." ) );

    m_canvas->SetAutoPanRequest( false );

    SCH_ITEM* undoItem = item;

    if( item->Type() == SCH_SHEET_PIN_T )
    {
        SCH_SHEET* sheet = (SCH_SHEET*) item->GetParent();

        wxCHECK_RET( (sheet != NULL) && (sheet->Type() == SCH_SHEET_T),
                     wxT( "Cannot place sheet pin in invalid schematic sheet object." ) );

        undoItem = sheet;
    }

    else if( item->Type() == SCH_FIELD_T )
    {
        SCH_COMPONENT* cmp = (SCH_COMPONENT*) item->GetParent();

        wxCHECK_RET( (cmp != NULL) && (cmp->Type() == SCH_COMPONENT_T),
                     wxT( "Cannot place field in invalid schematic component object." ) );

        undoItem = cmp;
    }

    if( item->IsNew() )
    {
        if( item->Type() == SCH_SHEET_T )
        {
            // Fix the size and position of the new sheet using the last values set by
            // the m_mouseCaptureCallback function.
            m_canvas->SetMouseCapture( NULL, NULL );

            if( !EditSheet( (SCH_SHEET*)item, aDC ) )
            {
                screen->SetCurItem( NULL );
                item->Draw( m_canvas, aDC, wxPoint( 0, 0 ), g_XorMode );
                delete item;
                return;
            }

            SetSheetNumberAndCount();
        }

        if( undoItem == item )
        {
            if( !screen->CheckIfOnDrawList( item ) )  // don't want a loop!
                screen->Append( item );

            SetRepeatItem( item );

            SaveCopyInUndoList( undoItem, UR_NEW );
        }
        else
        {
            // Here, item is not a basic schematic item, but an item inside
            // a parent basic schematic item,
            // currently: sheet pin or component field.
            // currently, only a sheet pin can be found as new item,
            // because new component fields have a specific handling, and do not appears here
            SaveCopyInUndoList( undoItem, UR_CHANGED );

            if( item->Type() == SCH_SHEET_PIN_T )
                ( (SCH_SHEET*)undoItem )->AddPin( (SCH_SHEET_PIN*) item );
            else
                wxLogMessage(wxT( "addCurrentItemToList: expected type = SCH_SHEET_PIN_T, actual type = %d" ),
                            item->Type() );
        }
    }
    else
    {
        SaveUndoItemInUndoList( undoItem );
    }

    // Erase the wire representation before the 'normal' view is drawn.
    if ( item->IsWireImage() )
        item->Draw( m_canvas, aDC, wxPoint( 0, 0 ), g_XorMode );

    item->ClearFlags();
    screen->SetModify();
    screen->SetCurItem( NULL );
    m_canvas->SetMouseCapture( NULL, NULL );
    m_canvas->EndMouseCapture();

    if( item->IsConnectable() )
        screen->TestDanglingEnds();

    if( aDC )
    {
        EDA_CROSS_HAIR_MANAGER( m_canvas, aDC );  // Erase schematic cursor
        undoItem->Draw( m_canvas, aDC, wxPoint( 0, 0 ), GR_DEFAULT_DRAWMODE );
    }
}