自学教程：C++ GetCurPart函数代码示例

bool LIB_EDIT_FRAME::LoadComponentFromCurrentLib( const wxString& aAliasName, int aUnit,                                                  int aConvert ){    LIB_ALIAS* alias = nullptr;    try    {        alias = Prj().SchSymbolLibTable()->LoadSymbol( GetCurLib(), aAliasName );    }    catch( const IO_ERROR& ioe )    {        wxString msg;        msg.Printf( _( "Error occurred loading symbol /"%s/" from library /"%s/"." ),                    aAliasName, GetCurLib() );        DisplayErrorMessage( this, msg, ioe.What() );        return false;    }    if( !alias || !LoadOneLibraryPartAux( alias, GetCurLib(), aUnit, aConvert ) )        return false;    // Enable synchronized pin edit mode for symbols with interchangeable units    m_syncPinEdit = !GetCurPart()->UnitsLocked();    GetScreen()->ClearUndoRedoList();    Zoom_Automatique( false );    SetShowDeMorgan( GetCurPart()->HasConversion() );    if( aUnit > 0 )        UpdatePartSelectList();    return true;}

bool LIB_EDIT_FRAME::isCurrentPart( const LIB_ID& aLibId ) const{    // This will return the root part of any alias    LIB_PART* part = m_libMgr->GetBufferedPart( aLibId.GetLibItemName(), aLibId.GetLibNickname() );    // Now we can compare the libId of the current part and the root part    return ( part && GetCurPart() && part->GetLibId() == GetCurPart()->GetLibId() );}

void LIB_EDIT_FRAME::OnAddPartToSchematic( wxCommandEvent& event ){    if( GetCurPart() )    {        SCH_EDIT_FRAME* schframe = (SCH_EDIT_FRAME*) Kiway().Player( FRAME_SCH, false );        if( schframe == NULL )      // happens when the schematic editor is not active (or closed)        {            DisplayErrorMessage( this, _( "No schematic currently open." ) );            return;        }        SCH_COMPONENT* component = new SCH_COMPONENT( *GetCurPart(), GetCurPart()->GetLibId(),                                                      g_CurrentSheet, GetUnit(), GetConvert() );        // Be sure the link to the corresponding LIB_PART is OK:        component->Resolve( *Prj().SchSymbolLibTable() );        if( schframe->GetAutoplaceFields() )            component->AutoplaceFields( /* aScreen */ NULL, /* aManual */ false );        schframe->Raise();        schframe->GetToolManager()->RunAction( EE_ACTIONS::placeSymbol, true, component );    }}

void LIB_EDIT_FRAME::SyncLibraries( bool aShowProgress ){    LIB_ID selected;    if( m_treePane )        selected = m_treePane->GetLibTree()->GetSelectedLibId();    if( aShowProgress )    {        wxProgressDialog progressDlg( _( "Loading Symbol Libraries" ), wxEmptyString,                                      m_libMgr->GetAdapter()->GetLibrariesCount(), this );        m_libMgr->Sync( true, [&]( int progress, int max, const wxString& libName )        {            progressDlg.Update( progress, wxString::Format( _( "Loading library /"%s/"" ), libName ) );        } );    }    else    {        m_libMgr->Sync( true );    }    if( m_treePane )    {        wxDataViewItem found;        if( selected.IsValid() )        {            // Check if the previously selected item is still valid,            // if not - it has to be unselected to prevent crash            found = m_libMgr->GetAdapter()->FindItem( selected );            if( !found )                m_treePane->GetLibTree()->Unselect();        }        m_treePane->Regenerate();        // Try to select the parent library, in case the part is not found        if( !found && selected.IsValid() )        {            selected.SetLibItemName( "" );            found = m_libMgr->GetAdapter()->FindItem( selected );            if( found )                m_treePane->GetLibTree()->SelectLibId( selected );        }        // If no selection, see if there's a current part to centre        if( !selected.IsValid() && GetCurPart() )        {            LIB_ID current( GetCurLib(), GetCurPart()->GetName() );            m_treePane->GetLibTree()->CenterLibId( current );        }    }}

void LIB_EDIT_FRAME::updateTitle(){    wxString lib = GetCurLib();    wxString title = _( "Symbol Editor" );    if( GetCurPart() )        title += wxT( " /u2014 " ) + GetCurPart()->GetLibId().Format();    SetTitle( title );}

LIB_ID LIB_EDIT_FRAME::getTargetLibId() const{    LIB_ID   id = m_treePane->GetLibTree()->GetSelectedLibId();    wxString nickname = id.GetLibNickname();    if( nickname.IsEmpty() && GetCurPart() )        id = GetCurPart()->GetLibId();    return id;}

void LIB_EDIT_FRAME::OnRevert( wxCommandEvent& aEvent ){    LIB_ID libId = getTargetLibId();    const wxString& libName = libId.GetLibNickname();    const wxString& partName = libId.GetLibItemName();  // Empty if this is the library itself that is selected    wxString msg = wxString::Format( _( "Revert /"%s/" to last version saved?" ),                                     partName.IsEmpty() ? libName : partName );    if( !ConfirmRevertDialog( this, msg ) )        return;    bool reload_currentPart = false;    wxString curr_partName = partName;    if( GetCurPart() )    {        // the library itself is reverted: the current part will be reloaded only if it is        // owned by this library        if( partName.IsEmpty() )        {            LIB_ID curr_libId = GetCurPart()->GetLibId();            reload_currentPart = libName == curr_libId.GetLibNickname();            if( reload_currentPart )                curr_partName = curr_libId.GetLibItemName();        }        else            reload_currentPart = isCurrentPart( libId );    }    int unit = m_unit;    if( reload_currentPart )        emptyScreen();    if( partName.IsEmpty() )    {        m_libMgr->RevertLibrary( libName );    }    else    {        libId = m_libMgr->RevertPart( libId.GetLibItemName(), libId.GetLibNickname() );        m_treePane->GetLibTree()->SelectLibId( libId );        m_libMgr->ClearPartModified( libId.GetLibItemName(), libId.GetLibNickname() );    }    if( reload_currentPart && m_libMgr->PartExists( curr_partName, libName ) )        loadPart( curr_partName, libName, unit );    m_treePane->Refresh();    refreshSchematic();}

bool LIB_EDIT_FRAME::LoadComponentFromCurrentLib( LIB_ALIAS* aLibEntry ){    if( !LoadOneLibraryPartAux( aLibEntry, GetCurLib() ) )        return false;    m_editPinsPerPartOrConvert = GetCurPart()->UnitsLocked() ? true : false;    GetScreen()->ClearUndoRedoList();    Zoom_Automatique( false );    SetShowDeMorgan( GetCurPart()->HasConversion() );    return true;}

bool LIB_EDIT_FRAME::SaveOnePart( PART_LIB* aLib, bool aPromptUser ){    wxString    msg;    LIB_PART*   part = GetCurPart();    GetScreen()->ClrModify();    LIB_PART* old_part = aLib->FindPart( part->GetName() );    if( old_part && aPromptUser )    {        msg.Printf( _( "Part '%s' already exists. Change it?" ),                    GetChars( part->GetName() ) );        if( !IsOK( this, msg ) )            return false;    }    m_drawItem = m_lastDrawItem = NULL;    if( old_part )        aLib->ReplacePart( old_part, part );    else        aLib->AddPart( part );    msg.Printf( _( "Part '%s' saved in library '%s'" ),                GetChars( part->GetName() ),                GetChars( aLib->GetName() ) );    SetStatusText( msg );    return true;}

void LIB_EDIT_FRAME::copySelectedItems(){    LIB_PART* part = GetCurPart();    if( !part )        return;    m_clipboard.ClearListAndDeleteItems();   // delete previous saved list, if exists    m_clipboard.SetLastCursorPosition( GetScreen()->m_BlockLocate.GetEnd() );    // store the reference point    for( LIB_ITEM& item : part->GetDrawItems() )    {        // We *do not* copy fields because they are unique for the whole component        // so skip them (do not duplicate) if they are flagged selected.        if( item.Type() == LIB_FIELD_T )            item.ClearFlags( SELECTED );        if( !item.IsSelected() )            continue;        // Do not clear the 'selected' flag. It is required to have items drawn when they are pasted.        LIB_ITEM* copy = (LIB_ITEM*) item.Clone();        copy->SetFlags( copy->GetFlags() | UR_TRANSIENT );        ITEM_PICKER picker( copy, UR_NEW );        m_clipboard.PushItem( picker );    }}

bool LIB_EDIT_FRAME::SynchronizePins(){    LIB_PART*      part = GetCurPart();    return !m_editPinsPerPartOrConvert && ( part &&        ( part->HasConversion() || part->IsMulti() ) );}

bool LIB_EDIT_FRAME::saveCurrentPart(){    if( GetCurPart() )    {        LIB_ID libId = GetCurPart()->GetLibId();        const wxString& libName = libId.GetLibNickname();        const wxString& partName = libId.GetLibItemName();        if( m_libMgr->FlushPart( partName, libName ) )        {            m_libMgr->ClearPartModified( partName, libName );            return true;        }    }    return false;}

void LIB_EDIT_FRAME::TempCopyComponent(){    delete m_tempCopyComponent;    if( LIB_PART* part = GetCurPart() )        // clone it and own the clone.        m_tempCopyComponent = new LIB_PART( *part );    else        // clear it, there was no CurPart        m_tempCopyComponent = NULL;}

void LIB_EDIT_FRAME::deleteItem( wxDC* aDC ){    wxCHECK_RET( m_drawItem != NULL, wxT( "No drawing item selected to delete." ) );    m_canvas->CrossHairOff( aDC );    LIB_PART*      part = GetCurPart();    SaveCopyInUndoList( part );    if( m_drawItem->Type() == LIB_PIN_T )    {        LIB_PIN*    pin = (LIB_PIN*) m_drawItem;        wxPoint     pos = pin->GetPosition();        part->RemoveDrawItem( (LIB_ITEM*) pin, m_canvas, aDC );        if( SynchronizePins() )        {            LIB_PIN* tmp = part->GetNextPin();            while( tmp != NULL )            {                pin = tmp;                tmp = part->GetNextPin( pin );                if( pin->GetPosition() != pos )                    continue;                part->RemoveDrawItem( (LIB_ITEM*) pin );            }        }        m_canvas->Refresh();    }    else    {        if( m_canvas->IsMouseCaptured() )        {            m_canvas->CallEndMouseCapture( aDC );        }        else        {            part->RemoveDrawItem( m_drawItem, m_canvas, aDC );            m_canvas->Refresh();        }    }    m_drawItem = NULL;    m_lastDrawItem = NULL;    OnModify();    m_canvas->CrossHairOn( aDC );}

void LIB_EDIT_FRAME::InstallFieldsEditorDialog( wxCommandEvent& event ){    if( !GetCurPart() )        return;    m_canvas->EndMouseCapture( ID_NO_TOOL_SELECTED, m_canvas->GetDefaultCursor() );    DIALOG_EDIT_LIBENTRY_FIELDS_IN_LIB dlg( this, GetCurPart() );    // This dialog itself subsequently can invoke a KIWAY_PLAYER as a quasimodal    // frame. Therefore this dialog as a modal frame parent, MUST be run under    // quasimodal mode for the quasimodal frame support to work.  So don't use    // the QUASIMODAL macros here.    if( dlg.ShowQuasiModal() != wxID_OK )        return;    UpdateAliasSelectList();    UpdatePartSelectList();    DisplayLibInfos();    Refresh();}

bool LIB_EDIT_FRAME::LoadComponentAndSelectLib( const LIB_ID& aLibId, int aUnit, int aConvert ){    if( GetScreen()->IsModify() && GetCurPart() )    {        if( !HandleUnsavedChanges( this, _( "The current symbol has been modified.  Save changes?" ),                                   [&]()->bool { return saveCurrentPart(); } ) )        {            return false;        }    }    SelectActiveLibrary( aLibId.GetLibNickname() );    return LoadComponentFromCurrentLib( aLibId.GetLibItemName(), aUnit, aConvert );}

void LIB_EDIT_FRAME::DisplayCmpDoc(){    LIB_ALIAS*      alias;    PART_LIB*    lib = GetCurLib();    LIB_PART*       part = GetCurPart();    ClearMsgPanel();    if( !lib || !part )        return;    wxString msg = part->GetName();    AppendMsgPanel( _( "Name" ), msg, BLUE, 8 );    if( m_aliasName == part->GetName() )        msg = _( "None" );    else        msg = m_aliasName;    alias = part->GetAlias( m_aliasName );    wxCHECK_RET( alias != NULL, "Alias not found in component." );    AppendMsgPanel( _( "Alias" ), msg, RED, 8 );    static wxChar UnitLetter[] = wxT( "?ABCDEFGHIJKLMNOPQRSTUVWXYZ" );    msg = UnitLetter[m_unit];    AppendMsgPanel( _( "Unit" ), msg, BROWN, 8 );    if( m_convert > 1 )        msg = _( "Convert" );    else        msg = _( "Normal" );    AppendMsgPanel( _( "Body" ), msg, GREEN, 8 );    if( part->IsPower() )        msg = _( "Power Symbol" );    else        msg = _( "Part" );    AppendMsgPanel( _( "Type" ), msg, MAGENTA, 8 );    AppendMsgPanel( _( "Description" ), alias->GetDescription(), CYAN, 8 );    AppendMsgPanel( _( "Key words" ), alias->GetKeyWords(), DARKDARKGRAY );    AppendMsgPanel( _( "Datasheet" ), alias->GetDocFileName(), DARKDARKGRAY );}

void LIB_EDIT_FRAME::SVG_PlotComponent( const wxString& aFullFileName ){    const bool plotBW = false;    const PAGE_INFO& pageInfo = GetScreen()->GetPageSettings();    SVG_PLOTTER* plotter = new SVG_PLOTTER();    plotter->SetPageSettings( pageInfo );    plotter->SetDefaultLineWidth( GetDefaultLineThickness() );    plotter->SetColorMode( plotBW );    wxPoint plot_offset;    const double scale = 1.0;    // Currently, plot units are in decimil    plotter->SetViewport( plot_offset, IU_PER_MILS/10, scale, false );    // Init :    plotter->SetCreator( wxT( "Eeschema-SVG" ) );    if( ! plotter->OpenFile( aFullFileName ) )    {        delete plotter;        return;    }    LOCALE_IO   toggle;    plotter->StartPlot();    LIB_PART*      part = GetCurPart();    if( part )    {        TRANSFORM   temp;     // Uses default transform        wxPoint     plotPos;        plotPos.x = pageInfo.GetWidthIU() /2;        plotPos.y = pageInfo.GetHeightIU()/2;        part->Plot( plotter, GetUnit(), GetConvert(), plotPos, temp );        // Plot lib fields, not plotted by m_component->Plot():        part->PlotLibFields( plotter, GetUnit(), GetConvert(), plotPos, temp );    }    plotter->EndPlot();    delete plotter;}

LIB_PART* LIB_EDIT_FRAME::getTargetPart() const{    LIB_ALIAS* alias = nullptr;    if( m_treePane->GetLibTree()->IsMenuActive() )    {        LIB_ID libId = m_treePane->GetLibTree()->GetSelectedLibId();        alias = m_libMgr->GetAlias( libId.GetLibItemName(), libId.GetLibNickname() );    }    else if( LIB_PART* part = GetCurPart() )    {        alias = part->GetAlias( 0 );    }    return alias ? alias->GetPart() : nullptr;}