C++ VIEW::Update方法代码示例

bool GERBVIEW_SELECTION_TOOL::selectMultiple()
{
    bool cancelled = false;     // Was the tool cancelled while it was running?
    m_multiple = true;          // Multiple selection mode is active
    KIGFX::VIEW* view = getView();
    getViewControls()->SetAutoPan( true );

    KIGFX::PREVIEW::SELECTION_AREA area;
    view->Add( &area );

    while( OPT_TOOL_EVENT evt = Wait() )
    {
        if( evt->IsCancel() )
        {
            cancelled = true;
            break;
        }

        if( evt->IsDrag( BUT_LEFT ) )
        {

            // Start drawing a selection box
            area.SetOrigin( evt->DragOrigin() );
            area.SetEnd( evt->Position() );
            area.SetAdditive( m_additive );
            area.SetSubtractive( m_subtractive );

            view->SetVisible( &area, true );
            view->Update( &area );
        }

        if( evt->IsMouseUp( BUT_LEFT ) )
        {
            // End drawing the selection box
            view->SetVisible( &area, false );

            // Mark items within the selection box as selected
            std::vector<KIGFX::VIEW::LAYER_ITEM_PAIR> selectedItems;

            // Filter the view items based on the selection box
            BOX2I selectionBox = area.ViewBBox();
            view->Query( selectionBox, selectedItems );         // Get the list of selected items

            std::vector<KIGFX::VIEW::LAYER_ITEM_PAIR>::iterator it, it_end;

            int width = area.GetEnd().x - area.GetOrigin().x;
            int height = area.GetEnd().y - area.GetOrigin().y;

            // Construct an EDA_RECT to determine EDA_ITEM selection
            EDA_RECT selectionRect( wxPoint( area.GetOrigin().x, area.GetOrigin().y ),
                                    wxSize( width, height ) );

            selectionRect.Normalize();

            for( it = selectedItems.begin(), it_end = selectedItems.end(); it != it_end; ++it )
            {
                auto item = static_cast<GERBER_DRAW_ITEM*>( it->first );

                if( !item || !selectable( item ) )
                    continue;

                /* Selection mode depends on direction of drag-selection:
                 * Left > Right : Select objects that are fully enclosed by selection
                 * Right > Left : Select objects that are crossed by selection
                 */

                if( width >= 0 )
                {
                    if( selectionBox.Contains( item->ViewBBox() ) )
                    {
                        if( m_subtractive )
                            unselect( item );
                        else
                            select( item );
                    }
                }
                else
                {
                    if( item->HitTest( selectionRect ) )
                    {
                        if( m_subtractive )
                            unselect( item );
                        else
                            select( item );
                    }

                }
            }

            if( m_selection.Size() == 1 )
                m_frame->SetCurItem( static_cast<GERBER_DRAW_ITEM*>( m_selection.Front() ) );
            else
                m_frame->SetCurItem( NULL );

            // Inform other potentially interested tools
            if( !m_selection.Empty() )
                m_toolMgr->ProcessEvent( SelectedEvent );

            break;  // Stop waiting for events
        }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                case PCB_LINE_T:                // a segment not on copper layers
                case PCB_TEXT_T:                // a text on a layer
                case PCB_TRACE_T:               // a track segment (segment on a copper layer)
                case PCB_VIA_T:                 // a via (like track segment on a copper layer)
                case PCB_DIMENSION_T:           // a dimension (graphic item)
                case PCB_TARGET_T:              // a target (graphic item)
                case PCB_MARKER_T:              // a marker used to show something
                case PCB_ZONE_AREA_T:
                    itemsToDeselect.push_back( boardItem );

                    view->Remove( boardItem );

                    if( !( changeFlags & CHT_DONE ) )
                        board->Remove( boardItem );

                    break;

                case PCB_MODULE_T:
                {
                    itemsToDeselect.push_back( boardItem );

                    // There are no modules inside a module yet
                    wxASSERT( !m_editModules );

                    MODULE* module = static_cast<MODULE*>( boardItem );
                    view->Remove( module );
                    module->ClearFlags();

                    if( !( changeFlags & CHT_DONE ) )
                        board->Remove( module );        // handles connectivity

                    // Clear flags to indicate, that the ratsnest, list of nets & pads are not valid anymore
                    board->m_Status_Pcb = 0;
                }
                break;

                default:                        // other types do not need to (or should not) be handled
                    wxASSERT( false );
                    break;
                }

                break;
            }

            case CHT_MODIFY:
            {
                if( !m_editModules && aCreateUndoEntry )
                {
                    ITEM_PICKER itemWrapper( boardItem, UR_CHANGED );
                    wxASSERT( ent.m_copy );
                    itemWrapper.SetLink( ent.m_copy );
                    undoList.PushItem( itemWrapper );
                }

                if( ent.m_copy )
                    connectivity->MarkItemNetAsDirty( static_cast<BOARD_ITEM*>( ent.m_copy ) );

                connectivity->Update( boardItem );
                view->Update( boardItem );

                // if no undo entry is needed, the copy would create a memory leak
                if( !aCreateUndoEntry )
                    delete ent.m_copy;

                break;
            }

            default:
                wxASSERT( false );
                break;
        }
    }

    // Removing an item should trigger the unselect action
    // but only after all items are removed otherwise we can get
    // flickering depending on the system
    if( itemsToDeselect.size() > 0 )
        m_toolMgr->RunAction( PCB_ACTIONS::unselectItems, true, &itemsToDeselect );

    if( !m_editModules && aCreateUndoEntry )
        frame->SaveCopyInUndoList( undoList, UR_UNSPECIFIED );

    if( TOOL_MANAGER* toolMgr = frame->GetToolManager() )
        toolMgr->PostEvent( { TC_MESSAGE, TA_MODEL_CHANGE, AS_GLOBAL } );

    if ( !m_editModules )
    {
        auto panel = static_cast<PCB_DRAW_PANEL_GAL*>( frame->GetGalCanvas() );
        connectivity->RecalculateRatsnest();
        connectivity->ClearDynamicRatsnest();
        panel->RedrawRatsnest();
    }

    if( aSetDirtyBit )
        frame->OnModify();

    frame->UpdateMsgPanel();

    clear();
}

bool PL_SELECTION_TOOL::selectMultiple()
{
    bool cancelled = false;     // Was the tool cancelled while it was running?
    m_multiple = true;          // Multiple selection mode is active
    KIGFX::VIEW* view = getView();

    KIGFX::PREVIEW::SELECTION_AREA area;
    view->Add( &area );

    while( OPT_TOOL_EVENT evt = Wait() )
    {
        if( evt->IsAction( &ACTIONS::cancelInteractive ) || evt->IsActivate() || evt->IsCancel() )
        {
            cancelled = true;
            break;
        }

        if( evt->IsDrag( BUT_LEFT ) )
        {
            // Start drawing a selection box
            area.SetOrigin( evt->DragOrigin() );
            area.SetEnd( evt->Position() );
            area.SetAdditive( m_additive );
            area.SetSubtractive( m_subtractive );

            view->SetVisible( &area, true );
            view->Update( &area );
            getViewControls()->SetAutoPan( true );
        }

        if( evt->IsMouseUp( BUT_LEFT ) )
        {
            getViewControls()->SetAutoPan( false );

            // End drawing the selection box
            view->SetVisible( &area, false );

            int width = area.GetEnd().x - area.GetOrigin().x;
            int height = area.GetEnd().y - area.GetOrigin().y;

            /* Selection mode depends on direction of drag-selection:
             * Left > Right : Select objects that are fully enclosed by selection
             * Right > Left : Select objects that are crossed by selection
             */
            bool windowSelection = width >= 0 ? true : false;

            // Construct an EDA_RECT to determine EDA_ITEM selection
            EDA_RECT selectionRect( (wxPoint)area.GetOrigin(), wxSize( width, height ) );

            selectionRect.Normalize();

            for( WS_DATA_ITEM* dataItem : WS_DATA_MODEL::GetTheInstance().GetItems() )
            {
                for( WS_DRAW_ITEM_BASE* item : dataItem->GetDrawItems() )
                {
                    if( item->HitTest( selectionRect, windowSelection ) )
                    {
                        if( m_subtractive )
                            unselect( item );
                        else
                            select( item );
                    }
                }
            }

            // Inform other potentially interested tools
            if( !m_selection.Empty() )
                m_toolMgr->ProcessEvent( EVENTS::SelectedEvent );

            break;  // Stop waiting for events
        }
    }

    getViewControls()->SetAutoPan( false );

    // Stop drawing the selection box
    view->Remove( &area );
    m_multiple = false;         // Multiple selection mode is inactive

    if( !cancelled )
        m_selection.ClearReferencePoint();

    return cancelled;
}

int PCB_EDITOR_CONTROL::PlaceTarget( const TOOL_EVENT& aEvent )
{
    KIGFX::VIEW* view = getView();
    KIGFX::VIEW_CONTROLS* controls = getViewControls();
    BOARD* board = getModel<BOARD>();
    PCB_TARGET* target = new PCB_TARGET( board );

    // Init the new item attributes
    target->SetLayer( Edge_Cuts );
    target->SetWidth( board->GetDesignSettings().m_EdgeSegmentWidth );
    target->SetSize( Millimeter2iu( 5 ) );
    VECTOR2I cursorPos = controls->GetCursorPosition();
    target->SetPosition( wxPoint( cursorPos.x, cursorPos.y ) );

    // Add a VIEW_GROUP that serves as a preview for the new item
    KIGFX::VIEW_GROUP preview( view );
    preview.Add( target );
    view->Add( &preview );

    m_toolMgr->RunAction( PCB_ACTIONS::selectionClear, true );
    controls->SetSnapping( true );

    Activate();
    m_frame->SetToolID( ID_PCB_MIRE_BUTT, wxCURSOR_PENCIL, _( "Add layer alignment target" ) );

    // Main loop: keep receiving events
    while( OPT_TOOL_EVENT evt = Wait() )
    {
        cursorPos = controls->GetCursorPosition();

        if( evt->IsCancel() || evt->IsActivate() )
            break;

        else if( evt->IsAction( &PCB_ACTIONS::incWidth ) )
        {
            target->SetWidth( target->GetWidth() + WIDTH_STEP );
            view->Update( &preview );
        }

        else if( evt->IsAction( &PCB_ACTIONS::decWidth ) )
        {
            int width = target->GetWidth();

            if( width > WIDTH_STEP )
            {
                target->SetWidth( width - WIDTH_STEP );
                view->Update( &preview );
            }
        }

        else if( evt->IsClick( BUT_LEFT ) )
        {
            assert( target->GetSize() > 0 );
            assert( target->GetWidth() > 0 );

            BOARD_COMMIT commit( m_frame );
            commit.Add( target );
            commit.Push( _( "Place a layer alignment target" ) );

            preview.Remove( target );

            // Create next PCB_TARGET
            target = new PCB_TARGET( *target );
            preview.Add( target );
        }

        else if( evt->IsMotion() )
        {
            target->SetPosition( wxPoint( cursorPos.x, cursorPos.y ) );
            view->Update( &preview );
        }
    }

    delete target;

    controls->SetSnapping( false );
    view->Remove( &preview );

    m_frame->SetToolID( ID_NO_TOOL_SELECTED, wxCURSOR_DEFAULT, wxEmptyString );

    return 0;
}

int PCB_EDITOR_CONTROL::PlaceModule( const TOOL_EVENT& aEvent )
{
    MODULE* module = NULL;
    KIGFX::VIEW* view = getView();
    KIGFX::VIEW_CONTROLS* controls = getViewControls();
    BOARD* board = getModel<BOARD>();

    // Add a VIEW_GROUP that serves as a preview for the new item
    KIGFX::VIEW_GROUP preview( view );
    view->Add( &preview );

    m_toolMgr->RunAction( PCB_ACTIONS::selectionClear, true );
    controls->ShowCursor( true );
    controls->SetSnapping( true );

    Activate();
    m_frame->SetToolID( ID_PCB_MODULE_BUTT, wxCURSOR_HAND, _( "Add footprint" ) );

    // Main loop: keep receiving events
    while( OPT_TOOL_EVENT evt = Wait() )
    {
        VECTOR2I cursorPos = controls->GetCursorPosition();

        if( evt->IsCancel() || evt->IsActivate() )
        {
            if( module )
            {
                delete module;
                module = NULL;

                preview.Clear();
                controls->ShowCursor( true );
            }
            else
                break;

            if( evt->IsActivate() )  // now finish unconditionally
                break;
        }

        else if( module && evt->Category() == TC_COMMAND )
        {
            if( TOOL_EVT_UTILS::IsRotateToolEvt( *evt ) )
            {
                const auto rotationAngle = TOOL_EVT_UTILS::GetEventRotationAngle(
                        *m_frame, *evt );
                module->Rotate( module->GetPosition(), rotationAngle );
                view->Update( &preview );
            }
            else if( evt->IsAction( &PCB_ACTIONS::flip ) )
            {
                module->Flip( module->GetPosition() );
                view->Update( &preview );
            }
        }

        else if( evt->IsClick( BUT_LEFT ) )
        {
            if( !module )
            {
                // Pick the module to be placed
                module = m_frame->LoadModuleFromLibrary( wxEmptyString,
                                                         m_frame->Prj().PcbFootprintLibs(),
                                                         true, NULL );

                if( module == NULL )
                    continue;

                // Module has been added in LoadModuleFromLibrary(),
                // so we have to remove it before committing the change     @todo LEGACY
                board->Remove( module );
                module->SetPosition( wxPoint( cursorPos.x, cursorPos.y ) );

                // Add all the drawable parts to preview
                preview.Add( module );
                module->RunOnChildren( std::bind( &KIGFX::VIEW_GROUP::Add, &preview, _1 ) );
            }
            else
            {
                BOARD_COMMIT commit( m_frame );
                commit.Add( module );
                commit.Push( _( "Place a module" ) );

                // Remove from preview
                preview.Remove( module );
                module->RunOnChildren( std::bind( &KIGFX::VIEW_GROUP::Remove, &preview, _1 ) );
                module = NULL;  // to indicate that there is no module that we currently modify
            }

            bool placing = ( module != NULL );

            controls->SetAutoPan( placing );
            controls->CaptureCursor( placing );
            controls->ShowCursor( !placing );
        }

        else if( module && evt->IsMotion() )
        {
            module->SetPosition( wxPoint( cursorPos.x, cursorPos.y ) );
            view->Update( &preview );
//.........这里部分代码省略.........