自学教程：C++ GetLayout函数代码示例

Layout* LayoutItem::ParentLayout() const {    if(GetWidget()) {        return GetWidget()->ParentLayout();    } else if(GetLayout()) {        GetLayout()->ParentLayout();    }    return nullptr;}

BSizeBBox::MaxSize(){	_ValidateLayoutData();	BSize size = (GetLayout() ? GetLayout()->MaxSize() : fLayoutData->max);	return BLayoutUtils::ComposeSize(ExplicitMaxSize(), size);}

void Dialog::CompleteConstruction(){    Wnd::CompleteConstruction();    SetLayout(GG::Wnd::Create<GG::Layout>(GG::X0, GG::Y0, GG::X1, GG::Y1, 1, 1, 2, 2));    GetLayout()->SetColumnStretch(0, 1.0);    //GetLayout()->SetRowStretch(0, 1.0);    GetLayout()->Add(m_child, 0 , 0);}

BSizeBBox::PreferredSize(){	_ValidateLayoutData();	BSize size = (GetLayout() ? GetLayout()->PreferredSize()		: fLayoutData->preferred);	return BLayoutUtils::ComposeSize(ExplicitPreferredSize(), size);}

voidCamStatusView::MessageReceived(BMessage *message){	switch (message->what) {		case B_OBSERVER_NOTICE_CHANGE:		{			int32 what;			message->FindInt32("be:observe_change_what", &what);			switch (what) {				case kMsgControllerCaptureStarted:					SetRecording(true);					break;				case kMsgControllerCaptureStopped:					if (fPaused)						fPaused = false;					SetRecording(false);					break;				case kMsgControllerCapturePaused:				case kMsgControllerCaptureResumed:					TogglePause(what == kMsgControllerCapturePaused);					break;				case kMsgControllerEncodeStarted:					fEncodingStringView->SetText(kEncodingString);					((BCardLayout*)GetLayout())->SetVisibleItem(1);							break;				case kMsgControllerEncodeProgress:				{					int32 totalFrames = 0;					if (message->FindInt32("frames_total", &totalFrames) == B_OK) {						fStatusBar->SetMaxValue(float(totalFrames));					}					int32 remainingFrames = 0;					if (message->FindInt32("frames_remaining", &remainingFrames) == B_OK) {						BString string = kEncodingString;						string << " (" << remainingFrames << " frames)";						fEncodingStringView->SetText(string);					}					fStatusBar->Update(1);					break;				}				case kMsgControllerEncodeFinished:				{					((BCardLayout*)GetLayout())->SetVisibleItem((int32)0);					break;				}				default:					break;			}			break;		}				default:			BView::MessageReceived(message);			break;	}}

bool LayoutItem::IsEmpty() const {    if(GetWidget() && GetWidget()->IsVisible()) {        return false;    } else if(GetLayout() && !GetLayout()->IsEmpty()) {        return false;    } else if(GetLayoutSpace()) {        return false;    }    return true;}

status_tBSplitView::AllUnarchived(const BMessage* from){	status_t err = BView::AllUnarchived(from);	if (err == B_OK) {		fSplitLayout = dynamic_cast<BSplitLayout*>(GetLayout());		if (!fSplitLayout && GetLayout())			return B_BAD_TYPE;		else if (!fSplitLayout)			return B_ERROR;	}	return err;}

inline bool MtgCard::operator==(const MtgCard& rhs) {    return GetLayout() == rhs.GetLayout() &&            GetManacost() == rhs.GetManacost() &&            GetCmc() == rhs.GetCmc() &&            CompareStringList(GetColors(), rhs.GetColors()) &&            type == rhs.type &&            CompareStringList(GetSupertypes(), rhs.GetSupertypes()) &&            CompareStringList(GetTypes(), rhs.GetTypes()) &&            CompareStringList(GetSubtypes(), rhs.GetSubtypes()) &&            GetRarity() == rhs.GetRarity() &&            text == rhs.GetText() &&            GetFlavor() == rhs.GetFlavor() &&            GetArtist() == rhs.GetArtist() &&            GetNumber() == rhs.GetNumber() &&            GetPower() == rhs.GetPower() &&            GetToughness() == rhs.GetToughness() &&            GetLoyalty() == rhs.GetLoyalty() &&            GetMultiverseid() == rhs.GetMultiverseid() &&            CompareIntList(GetVariations(), rhs.GetVariations()) &&            GetImageName() == rhs.GetImageName() &&            GetWatermark() == rhs.GetWatermark() &&            GetBorder() == rhs.GetBorder() &&            IsTimeshifted() == rhs.IsTimeshifted() &&            GetHand() == rhs.GetHand() &&            GetLife() == rhs.GetLife() &&            IsReserved() == rhs.IsReserved() &&            GetReleasedate() == rhs.GetReleasedate() &&            IsStarter() == rhs.IsStarter() &&            CompareStringPairList(GetRulings(), rhs.GetRulings()) &&            CompareStringPairList(GetForeignNames(), rhs.GetForeignNames()) &&            GetOriginalText() == rhs.GetOriginalText() &&            GetOriginalType() == rhs.GetOriginalType() &&            CompareStringPairList(GetLegalities(), rhs.GetLegalities()) &&            GetEdition() == rhs.GetEdition();}

/** * Function IsLayerVisible * tests whether a given layer is visible * @param aLayerIndex = The index of the layer to be tested * @return bool - true if the layer is visible. */bool GERBVIEW_FRAME::IsLayerVisible( int aLayerIndex ) const{    if( ! m_DisplayOptions.m_IsPrinting )        return m_LayersManager->IsLayerVisible( aLayerIndex );    else        return GetLayout()->IsLayerVisible( aLayerIndex );}

BOOL CBCGPRibbonItemDlg::OnInitDialog() {	CBCGPDialog::OnInitDialog();	CBCGPStaticLayout* pLayout = (CBCGPStaticLayout*)GetLayout ();	if (pLayout != NULL)	{		pLayout->AddAnchor (IDC_BCGBARRES_IMAGE_LIST, CBCGPStaticLayout::e_MoveTypeNone, CBCGPStaticLayout::e_SizeTypeBoth, CSize(0, 0), CSize(100, 100));		pLayout->AddAnchor (IDD_BCGBAR_RES_LABEL1, CBCGPStaticLayout::e_MoveTypeVert, CBCGPStaticLayout::e_SizeTypeNone, CSize(50, 100));		pLayout->AddAnchor (IDC_BCGBARRES_NAME, CBCGPStaticLayout::e_MoveTypeVert, CBCGPStaticLayout::e_SizeTypeHorz, CSize(50, 100), CSize(100, 100));		pLayout->AddAnchor (IDOK, CBCGPStaticLayout::e_MoveTypeBoth, CBCGPStaticLayout::e_SizeTypeNone, CSize(100, 100));		pLayout->AddAnchor (IDCANCEL, CBCGPStaticLayout::e_MoveTypeBoth, CBCGPStaticLayout::e_SizeTypeNone, CSize(100, 100));	}		m_wndImageList.SetImages(&m_images);		int nCount = m_images.GetCount ();	for (int iImage = 0; iImage < nCount; iImage++)	{		CBCGPToolbarButton* pButton = new CBCGPToolbarButton;		pButton->SetImage (iImage);		m_wndImageList.AddButton (pButton);		m_Buttons.AddTail (pButton);	}	m_wndImageList.SelectButton (m_iSelImage);	return TRUE;  // return TRUE unless you set the focus to a control	              // EXCEPTION: OCX Property Pages should return FALSE}

BOOL CBCGPGridFilterListDlg::OnInitDialog() {	CBCGPDialog::OnInitDialog();	CBCGPStaticLayout* pLayout = (CBCGPStaticLayout*)GetLayout();	if (pLayout != NULL)	{		pLayout->AddAnchor(IDC_BCGBARRES_FILTER_SEARCH, CBCGPStaticLayout::e_MoveTypeNone, CBCGPStaticLayout::e_SizeTypeHorz);		pLayout->AddAnchor(IDC_BCGBARRES_FILTER_LIST, CBCGPStaticLayout::e_MoveTypeNone, CBCGPStaticLayout::e_SizeTypeBoth);		pLayout->AddAnchor(IDOK, CBCGPStaticLayout::e_MoveTypeBoth, CBCGPStaticLayout::e_SizeTypeNone);		pLayout->AddAnchor(IDCANCEL, CBCGPStaticLayout::e_MoveTypeBoth, CBCGPStaticLayout::e_SizeTypeNone);	}	CString strPrompt;		{		CBCGPLocalResource locaRes;		strPrompt.LoadString(IDS_BCGBARRES_SEARCH_PROMPT);		m_strSelectAll.LoadString(IDS_BCGBARRES_SELECT_ALL);	}	m_wndEdit.EnableSearchMode(TRUE, strPrompt);	FillList();	m_wndEdit.SetFocus();	return FALSE; // return TRUE unless you set the focus to a control	              // EXCEPTION: OCX Property Pages should return FALSE}

voidNotificationWindow::_LoadDisplaySettings(BMessage& settings){	int32 setting;	float originalWidth = fWidth;	if (settings.FindFloat(kWidthName, &fWidth) != B_OK)		fWidth = kDefaultWidth;	if (originalWidth != fWidth)		GetLayout()->SetExplicitSize(BSize(fWidth, B_SIZE_UNSET));	if (settings.FindInt32(kIconSizeName, &setting) != B_OK)		fIconSize = kDefaultIconSize;	else		fIconSize = (icon_size)setting;	int32 position;	if (settings.FindInt32(kNotificationPositionName, &position) != B_OK)		fPosition = kDefaultNotificationPosition;	else		fPosition = position;	// Notify the views about the change	appview_t::iterator aIt;	for (aIt = fAppViews.begin(); aIt != fAppViews.end(); ++aIt) {		AppGroupView* view = aIt->second;		view->Invalidate();	}}

voidPartitionsPage::_BuildUI(){	BString text;	text << B_TRANSLATE_COMMENT("Partitions", "Title") << "/n"		<< B_TRANSLATE("The following partitions were detected. Please "			"check the box next to the partitions to be included "			"in the boot menu. You can also set the names of the "			"partitions as you would like them to appear in the "			"boot menu.");	fDescription = CreateDescription("description", text);	MakeHeading(fDescription);	fPartitions = new BGridView("partitions", 0,		be_control_look->DefaultItemSpacing() / 3);	BLayoutBuilder::Grid<>(fPartitions)		.SetInsets(B_USE_DEFAULT_SPACING, B_USE_DEFAULT_SPACING,			B_USE_DEFAULT_SPACING, B_USE_DEFAULT_SPACING)		.SetColumnWeight(0, 0)		.SetColumnWeight(1, 1)		.SetColumnWeight(2, 0.5)		.SetColumnWeight(3, 0.5);	_FillPartitionsView(fPartitions);	BScrollView* scrollView = new BScrollView("scrollView", fPartitions, 0,		false, true);	SetLayout(new BGroupLayout(B_VERTICAL));	BLayoutBuilder::Group<>((BGroupLayout*)GetLayout())		.Add(fDescription)		.Add(scrollView);}

void XaLibControllerFrontEnd::OnStart(const string& ConfFile) {    try {        LoadXmlConfFile(ConfFile);        StartLog();        LOG.Write("INF", __FILE__, __FUNCTION__,__LINE__,"########################### STARTING FRONT END ACTION LOG ############################");        //StartDb();        StartHttp();        //GetServerInfo();        //GetClientInfo();        SESSION.FrontEndIp=HTTP.GetServerIpAddress();        SESSION.ClientIp=HTTP.GetClientIpAddress();        GetLayout();        LOG.Write("INF", __FILE__, __FUNCTION__,__LINE__,"IP Address Client-> "+SESSION.ClientIp);        LOG.Write("INF", __FILE__, __FUNCTION__,__LINE__,"Ip Address Front End Server -> "+SESSION.FrontEndIp);        LOG.Write("INF", __FILE__, __FUNCTION__,__LINE__,"Read HttpString -> " + REQUEST.HeadersString);        LOG.Write("INF", __FILE__, __FUNCTION__,__LINE__,"Request Language -> "+REQUEST.Language);//		LOG.Write("INF", __FILE__, __FUNCTION__,__LINE__,"Request Device -> "+REQUEST.Device);        //RESPONSE.ResponseType=REQUEST.ResponseType;    } catch (int e) {        throw;    }};

void MusicPaymentPreview::PreLayoutManagement(){  nux::Geometry const& geo = GetGeometry();  GetLayout()->SetGeometry(geo);  previews::Style& style = dash::previews::Style::Instance();  int content_width = geo.width - style.GetPanelSplitWidth().CP(scale) - style.GetDetailsLeftMargin().CP(scale) - style.GetDetailsRightMargin().CP(scale);  int width = std::max<int>(0, content_width);  if(full_data_layout_) { full_data_layout_->SetMaximumWidth(width); }  if(header_layout_) { header_layout_->SetMaximumWidth(width); }  if(intro_) { intro_->SetMaximumWidth(width); }  if(form_layout_) { form_layout_->SetMaximumWidth(width); }  if(footer_layout_) { footer_layout_->SetMaximumWidth(width); }  // set the tab ordering  SetFirstInTabOrder(password_entry_->text_entry());  SetLastInTabOrder(buttons_map_[MusicPaymentPreview::CANCEL_PURCHASE_ACTION].GetPointer());  SetLastInTabOrder(buttons_map_[MusicPaymentPreview::PURCHASE_ALBUM_ACTION].GetPointer());  SetLastInTabOrder(buttons_map_[MusicPaymentPreview::CHANGE_PAYMENT_ACTION].GetPointer());  SetLastInTabOrder(buttons_map_[MusicPaymentPreview::FORGOT_PASSWORD_ACTION].GetPointer());  Preview::PreLayoutManagement();}

DrivesPage::DrivesPage(WizardView* wizardView, const BootMenuList& menus,	BMessage* settings, const char* name)	:	WizardPageView(settings, name),	fWizardView(wizardView),	fHasInstallableItems(false){	BString text;	text << B_TRANSLATE_COMMENT("Drives", "Title") << "/n"		<< B_TRANSLATE("Please select the drive you want the boot manager to "			"be installed to or uninstalled from.");	BTextView* description = CreateDescription("description", text);	MakeHeading(description);	fDrivesView = new BListView("drives", B_SINGLE_SELECTION_LIST,		B_WILL_DRAW | B_FRAME_EVENTS | B_NAVIGABLE | B_FULL_UPDATE_ON_RESIZE);	fDrivesView->SetSelectionMessage(new BMessage(kMsgSelectionChanged));	BScrollView* scrollView = new BScrollView("scrollView", fDrivesView, 0,		false, true);	SetLayout(new BGroupLayout(B_VERTICAL));	BLayoutBuilder::Group<>((BGroupLayout*)GetLayout())		.Add(description, 0.5)		.Add(scrollView, 1);	_UpdateWizardButtons(NULL);	_FillDrivesView(menus);}

voidAppGroupView::MessageReceived(BMessage* msg){	switch (msg->what) {		case kRemoveView:		{			NotificationView* view = NULL;			if (msg->FindPointer("view", (void**)&view) != B_OK)				return;			infoview_t::iterator vIt = find(fInfo.begin(), fInfo.end(), view);			if (vIt == fInfo.end())				break;			fInfo.erase(vIt);			GetLayout()->RemoveView(view);			delete view;			fParent->PostMessage(msg);			if (!this->HasChildren()) {				Hide();				BMessage removeSelfMessage(kRemoveGroupView);				removeSelfMessage.AddPointer("view", this);				fParent->PostMessage(&removeSelfMessage);			}						break;		}		default:			BView::MessageReceived(msg);	}}

ScreenSaverWindow::ScreenSaverWindow()	:	BWindow(BRect(50.0f, 50.0f, 50.0f + kWindowWidth, 50.0f + kWindowHeight),		B_TRANSLATE_SYSTEM_NAME("ScreenSaver"), B_TITLED_WINDOW,		B_ASYNCHRONOUS_CONTROLS | B_AUTO_UPDATE_SIZE_LIMITS){	fSettings.Load();	fMinWidth = floorf(be_control_look->DefaultItemSpacing()		* (kWindowWidth / kDefaultItemSpacingAt12pt));	font_height fontHeight;	be_plain_font->GetHeight(&fontHeight);	float textHeight = ceilf(fontHeight.ascent + fontHeight.descent);	fMinHeight = ceilf(std::max(kWindowHeight, textHeight * 28));	// Create the password editing window	fPasswordWindow = new PasswordWindow(fSettings);	fPasswordWindow->Run();	// Create the tab view	fTabView = new TabView();	fTabView->SetBorder(B_NO_BORDER);	// Create the controls inside the tabs	fFadeView = new FadeView(B_TRANSLATE("General"), fSettings);	fModulesView = new ModulesView(B_TRANSLATE("Screensavers"), fSettings);	fTabView->AddTab(fFadeView);	fTabView->AddTab(fModulesView);	// Create the topmost background view	BView* topView = new BView("topView", B_WILL_DRAW);	topView->SetViewUIColor(B_PANEL_BACKGROUND_COLOR);	topView->SetExplicitAlignment(BAlignment(B_ALIGN_USE_FULL_WIDTH,		B_ALIGN_USE_FULL_HEIGHT));	topView->SetExplicitMinSize(BSize(fMinWidth, fMinHeight));	BLayoutBuilder::Group<>(topView, B_VERTICAL)		.SetInsets(0, B_USE_DEFAULT_SPACING, 0, B_USE_WINDOW_SPACING)		.Add(fTabView)		.End();	SetLayout(new BGroupLayout(B_VERTICAL));	GetLayout()->AddView(topView);	fTabView->Select(fSettings.WindowTab());	if (fSettings.WindowFrame().left > 0 && fSettings.WindowFrame().top > 0)		MoveTo(fSettings.WindowFrame().left, fSettings.WindowFrame().top);	if (fSettings.WindowFrame().Width() > 0		&& fSettings.WindowFrame().Height() > 0) {		ResizeTo(fSettings.WindowFrame().Width(),			fSettings.WindowFrame().Height());	}	CenterOnScreen();}

bool TreeNode::ValidateExpandButton() {	bool repaint = false;	if (child_nodes_ != 0 && expand_button_ == 0) {		GUIImageManager* i_man = GetImageManager();		/*expand_button_ = new CheckButton(expand_icon_id_, collapse_icon_id_,						 expand_icon_id_, collapse_icon_id_,						 collapse_icon_id_, expand_icon_id_,						 "ExpandButton");*/		expand_button_->SetPreferredSize(i_man->GetImageSize(expand_icon_id_));		expand_button_->SetMinSize(expand_button_->GetPreferredSize());		expand_button_->SetOnClick(TreeNode, OnExpandButtonUnclicked);		// Create a rect with a CenterLayout in order to keep the button centered.		RectComponent* rect = new RectComponent(new CenterLayout());		rect->AddChild(expand_button_);		rect->SetPreferredSize(expand_button_->GetPreferredSize());		rect->SetMinSize(expand_button_->GetMinSize());		if (((GridLayout*)GetLayout())->GetNumCols() > 1) {			Component* comp = ((GridLayout*)GetLayout())->GetComponentAt(0, 0);			((GridLayout*)GetLayout())->DeleteColumn(0);			delete comp;		}		((GridLayout*)GetLayout())->InsertColumn(0);		AddChild(rect, 0, 0);		repaint = true;	} else if (child_nodes_ == 0 && expand_button_ == 0) {		GUIImageManager* i_man = GetImageManager();		RectComponent* rect = new RectComponent(new CenterLayout());		rect->SetPreferredSize(i_man->GetImageSize(expand_icon_id_));		rect->SetMinSize(rect->GetPreferredSize());		((GridLayout*)GetLayout())->InsertColumn(0);		AddChild(rect, 0, 0);	}	return repaint;}

NetworkWindow::NetworkWindow()	:	BWindow(BRect(50, 50, 269, 302), B_TRANSLATE_SYSTEM_NAME("Network"),		B_TITLED_WINDOW, B_NOT_RESIZABLE | B_ASYNCHRONOUS_CONTROLS		| B_NOT_ZOOMABLE | B_AUTO_UPDATE_SIZE_LIMITS | B_QUIT_ON_WINDOW_CLOSE){	SetLayout(new BGroupLayout(B_HORIZONTAL));	GetLayout()->AddView(new EthernetSettingsView());}

void UserPromptView::DrawContent(nux::GraphicsEngine& graphics_engine, bool force_draw){  nux::Geometry const& geo = GetGeometry();  graphics_engine.PushClippingRectangle(geo);  if (!IsFullRedraw())  {    EnsureBGLayer();    nux::GetPainter().PushLayer(graphics_engine, geo, bg_layer_.get());  }  if (GetLayout())    GetLayout()->ProcessDraw(graphics_engine, force_draw);  if (!IsFullRedraw())    nux::GetPainter().PopBackground();  graphics_engine.PopClippingRectangle();}

void FilterBar::UpdateScale(double scale){  for (auto& filters : filter_map_)    filters.second->scale = scale;  auto& style = dash::Style::Instance();  auto* layout = static_cast<nux::VLayout*>(GetLayout());  layout->SetTopAndBottomPadding(style.GetFilterBarTopPadding().CP(scale) - style.GetFilterHighlightPadding().CP(scale));  layout->SetSpaceBetweenChildren(style.GetSpaceBetweenFilterWidgets().CP(scale) - style.GetFilterHighlightPadding().CP(scale));}

void FilterBar::ClearFilters(){  for (auto iter: filter_map_)  {    FilterExpanderLabel* filter_view = iter.second;    RemoveChild(filter_view);    GetLayout()->RemoveChildObject(filter_view);  }  filter_map_.clear();}

DevicesWindow::DevicesWindow()	:	BWindow(BRect(50, 50, 750, 550), B_TRANSLATE_SYSTEM_NAME("Devices"),		B_TITLED_WINDOW, B_ASYNCHRONOUS_CONTROLS  | B_AUTO_UPDATE_SIZE_LIMITS			| B_QUIT_ON_WINDOW_CLOSE){	BLayoutBuilder::Group<>(this, B_VERTICAL)		.SetInsets(0)		.Add(fDevicesView = new DevicesView());	GetLayout()->SetExplicitMinSize(BSize(600, 300));}

NetworkWindow::NetworkWindow(Setting* setting)	: BWindow(BRect(50, 50, 269, 302), "Network", B_TITLED_WINDOW,		B_NOT_RESIZABLE | B_ASYNCHRONOUS_CONTROLS | B_NOT_ZOOMABLE		| B_AUTO_UPDATE_SIZE_LIMITS){	SetLayout(new BGroupLayout(B_HORIZONTAL));	fEthernetView = new EthernetSettingsView(setting);	GetLayout()->AddView(fEthernetView);		SetTitle(setting->Name());}

AppGroupView::AppGroupView(NotificationWindow* win, const char* label)	:	BGroupView("appGroup", B_VERTICAL, 0),	fLabel(label),	fParent(win),	fCollapsed(false){	SetFlags(Flags() | B_WILL_DRAW);	static_cast<BGroupLayout*>(GetLayout())->SetInsets(0, kHeaderSize, 0, 0);}

tagSIZE ILayoutItem::GetRootOffset(){    CSize szOffset(0, 0);    ILayout* pLayout = GetLayout();    while (pLayout != NULL) {        CRect rc = pLayout->GetRect();        szOffset.cx += rc.left;        szOffset.cy += rc.top;    }    return szOffset;}