C++ LabelRefPtr::getPreferredSize方法代码示例

PanelUnrecPtr createMultiFieldPanel(void)
{
    //Popup Menu
    MenuItemRefPtr RemoveIndexMenuItem = MenuItem::create();
    RemoveIndexMenuItem->setText("Remove Index");
    RemoveIndexMenuItem->addActionListener(new RemoveMultiFieldActionListener());

    MenuItemRefPtr SetValueMenuItem = MenuItem::create();
    SetValueMenuItem->setText("Set Value");
    SetValueMenuItem->addActionListener(new SetMultiFieldActionListener());
    
    MenuItemRefPtr AddValueMenuItem = MenuItem::create();
    AddValueMenuItem->setText("Add Value");
    AddValueMenuItem->addActionListener(new AddMultiFieldActionListener());
    
    MenuItemRefPtr InsertIndexMenuItem = MenuItem::create();
    InsertIndexMenuItem->setText("Insert Value");
    InsertIndexMenuItem->addActionListener(new InsertMultiFieldActionListener());
    
    MenuItemRefPtr MoveIndexMenuItem = MenuItem::create();
    MoveIndexMenuItem->setText("Move Value");
    MoveIndexMenuItem->addActionListener(new MoveMultiFieldActionListener());
    
    MenuItemRefPtr SwapIndexMenuItem = MenuItem::create();
    SwapIndexMenuItem->setText("Swap Value");
    SwapIndexMenuItem->addActionListener(new SwapMultiFieldActionListener());

    PopupMenuRefPtr MultiFieldListPopupMenu = PopupMenu::create();
    MultiFieldListPopupMenu->addItem(SetValueMenuItem);
    MultiFieldListPopupMenu->addItem(AddValueMenuItem);
    MultiFieldListPopupMenu->addItem(InsertIndexMenuItem);
    MultiFieldListPopupMenu->addItem(MoveIndexMenuItem);
    MultiFieldListPopupMenu->addItem(SwapIndexMenuItem);
    MultiFieldListPopupMenu->addItem(RemoveIndexMenuItem);

    //Multi-field List Model
	MultiFieldListModel = MFieldListModel::create();
    MultiFieldListModel->setContainer(TutorialBackground);
    MultiFieldListModel->setFieldId(GradientBackground::ColorFieldId);
    //MultiFieldListModel->setFieldId(GradientBackground::PositionFieldId);

    //List
    MultiFieldList = List::create();
    MultiFieldList->setPreferredSize(Vec2f(200, 300));
    MultiFieldList->setOrientation(List::VERTICAL_ORIENTATION);
	MultiFieldList->setModel(MultiFieldListModel);
    ListSelectionModelPtr MultiFieldListSelectionModel(new DefaultListSelectionModel());
    MultiFieldList->setSelectionModel(MultiFieldListSelectionModel);
    MultiFieldList->setPopupMenu(MultiFieldListPopupMenu);

    // Create a ScrollPanel for easier viewing of the List
    ScrollPanelRefPtr ExampleScrollPanel = ScrollPanel::create();
        ExampleScrollPanel->setPreferredSize(Vec2f(200,300));
        ExampleScrollPanel->setHorizontalResizePolicy(ScrollPanel::RESIZE_TO_VIEW);
    ExampleScrollPanel->setViewComponent(MultiFieldList);

    // Create MainFramelayout
    FlowLayoutRefPtr MainInternalWindowLayout = OSG::FlowLayout::create();
    MainInternalWindowLayout->setOrientation(FlowLayout::VERTICAL_ORIENTATION);
    MainInternalWindowLayout->setMajorAxisAlignment(0.5f);
    MainInternalWindowLayout->setMinorAxisAlignment(0.5f);

    //Label
    LabelRefPtr ListLabel = Label::create();
    ListLabel->setText("Background Colors List");
    ListLabel->setPreferredSize(Vec2f(200.0f, ListLabel->getPreferredSize().y()));


    //Panel
    FlowLayoutRefPtr ThePanelLayout = OSG::FlowLayout::create();
    ThePanelLayout->setOrientation(FlowLayout::VERTICAL_ORIENTATION);
    ThePanelLayout->setMajorAxisAlignment(0.5f);
    ThePanelLayout->setMinorAxisAlignment(0.5f);

    PanelRefPtr ThePanel = Panel::createEmpty();
    ThePanel->setLayout(ThePanelLayout);
    ThePanel->pushToChildren(ListLabel);
    ThePanel->pushToChildren(ExampleScrollPanel);

    return ThePanel;
    
}

//.........这里部分代码省略.........
		ExampleList->setModel(ExampleListModel);

    ExampleList->setSelectionModel(ExampleListSelectionModel);


    /******************************************************

            Determine the SelectionModel
            -SINGLE_SELECTION lets you select ONE item
                via a single mouse click
            -SINGLE_INTERVAL_SELECTION lets you select
                one interval via mouse and SHIFT key
            -MULTIPLE_INTERVAL_SELECTION lets you select
                via mouse, and SHIFT and CONTRL keys

            Note: this tutorial is currently set up
            to allow for this to be changed via 
			TogggleButtons with ActionListeners attached 
            to them so this code is commented out.

    ******************************************************/

    //SelectionModel.setMode(DefaultListSelectionModel::SINGLE_SELECTION);
    //SelectionModel.setMode(DefaultListSelectionModel::SINGLE_INTERVAL_SELECTION);
    //SelectionModel.setMode(DefaultListSelectionModel::MULTIPLE_INTERVAL_SELECTION);

    // Create a ScrollPanel for easier viewing of the List (see 27ScrollPanel)
    ScrollPanelRefPtr ExampleScrollPanel = ScrollPanel::create();
        ExampleScrollPanel->setPreferredSize(Vec2f(200,300));
        ExampleScrollPanel->setHorizontalResizePolicy(ScrollPanel::RESIZE_TO_VIEW);
        //ExampleScrollPanel->setVerticalResizePolicy(ScrollPanel::RESIZE_TO_VIEW);
    ExampleScrollPanel->setViewComponent(ExampleList);

    // Create MainFramelayout
    FlowLayoutRefPtr MainInternalWindowLayout = OSG::FlowLayout::create();
    MainInternalWindowLayout->setOrientation(FlowLayout::VERTICAL_ORIENTATION);
    MainInternalWindowLayout->setMajorAxisAlignment(0.5f);
    MainInternalWindowLayout->setMinorAxisAlignment(0.5f);

    LabelRefPtr ListLabel = Label::create();
    ListLabel->setText("Background Colors List");
    ListLabel->setPreferredSize(Vec2f(200.0f, ListLabel->getPreferredSize().y()));

    // Create The Main InternalWindow
    // Create Background to be used with the Main InternalWindow
    ColorLayerRefPtr MainInternalWindowBackground = OSG::ColorLayer::create();
        MainInternalWindowBackground->setColor(Color4f(1.0,1.0,1.0,0.5));

    InternalWindowRefPtr MainInternalWindow = OSG::InternalWindow::create();
    MainInternalWindow->pushToChildren(ListLabel);
    MainInternalWindow->pushToChildren(ExampleScrollPanel);
    MainInternalWindow->setLayout(MainInternalWindowLayout);
    MainInternalWindow->setBackgrounds(MainInternalWindowBackground);
    MainInternalWindow->setAlignmentInDrawingSurface(Vec2f(0.5f,0.5f));
    MainInternalWindow->setScalingInDrawingSurface(Vec2f(0.7f,0.5f));
    MainInternalWindow->setDrawTitlebar(false);
    MainInternalWindow->setResizable(false);

    // Create the Drawing Surface
    UIDrawingSurfaceRefPtr TutorialDrawingSurface = UIDrawingSurface::create();
        TutorialDrawingSurface->setGraphics(TutorialGraphics);
        TutorialDrawingSurface->setEventProducer(TutorialWindow);
    
	TutorialDrawingSurface->openWindow(MainInternalWindow);

    // Create the UI Foreground Object
    UIForegroundRefPtr TutorialUIForeground = OSG::UIForeground::create();

        TutorialUIForeground->setDrawingSurface(TutorialDrawingSurface);

    // Create the SimpleSceneManager helper
    mgr = new SimpleSceneManager;

    // Tell the Manager what to manage
    mgr->setWindow(TutorialWindow);
    mgr->setRoot(scene);

    // Add the UI Foreground Object to the Scene
    ViewportRefPtr TutorialViewport = mgr->getWindow()->getPort(0);
    TutorialViewport->addForeground(TutorialUIForeground);
    TutorialViewport->setBackground(TheBackground);

    // Show the whole Scene
    mgr->showAll();


    //Open Window
    Vec2f WinSize(TutorialWindow->getDesktopSize() * 0.85f);
    Pnt2f WinPos((TutorialWindow->getDesktopSize() - WinSize) *0.5);
    TutorialWindow->openWindow(WinPos,
            WinSize,
            "44MFieldList");

    //Enter main Loop
    TutorialWindow->mainLoop();

    osgExit();

    return 0;
}

//.........这里部分代码省略.........
    BlueSliderTrackCanvas->setBackgrounds(_BlueSliderTrackBackground);

    _BlueSlider = Slider::create();
    _BlueSlider->setDrawLabels(false);
    _BlueSlider->setDrawMajorTicks(false);
    _BlueSlider->setDrawMinorTicks(false);
    _BlueSlider->setOrientation(Slider::HORIZONTAL_ORIENTATION);;
    _BlueSlider->setTrackDrawObject(BlueSliderTrackCanvas);
    _BlueSlider->setRangeModel(_BlueModel->getBoundedRangeModel());

    if(getIncludeAlpha())
    {
        _AlphaSliderTrackBackground = GradientLayer::create();
        _AlphaSliderTrackBackground->setStartPosition(Vec2f(0.0f,0.0f));
        _AlphaSliderTrackBackground->setEndPosition(Vec2f(1.0f,0.0f));

        UIDrawObjectCanvasRefPtr AlphaSliderTrackCanvas = UIDrawObjectCanvas::create();
        AlphaSliderTrackCanvas->setPreferredSize(Vec2f(15.0f,15.0f));
        AlphaSliderTrackCanvas->setBorders(NULL);
        AlphaSliderTrackCanvas->setBackgrounds(_AlphaSliderTrackBackground);

        _AlphaSlider = Slider::create();
        _AlphaSlider->setDrawLabels(false);
        _AlphaSlider->setDrawMajorTicks(false);
        _AlphaSlider->setDrawMinorTicks(false);
        _AlphaSlider->setOrientation(Slider::HORIZONTAL_ORIENTATION);;
        _AlphaSlider->setTrackDrawObject(AlphaSliderTrackCanvas);
        _AlphaSlider->setRangeModel(_AlphaModel->getBoundedRangeModel());
    }

    //Labels
    LabelRefPtr RedLabel = Label::create();
    RedLabel->setText("Red");
    RedLabel->setPreferredSize(Vec2f(50.0f, RedLabel->getPreferredSize().y()));
    RedLabel->setBackgrounds(NULL);
    RedLabel->setBorders(NULL);

    LabelRefPtr GreenLabel = Label::create();
    GreenLabel->setText("Green");
    GreenLabel->setPreferredSize(Vec2f(50.0f, GreenLabel->getPreferredSize().y()));
    GreenLabel->setBackgrounds(NULL);
    GreenLabel->setBorders(NULL);

    LabelRefPtr BlueLabel = Label::create();
    BlueLabel->setText("Blue");
    BlueLabel->setPreferredSize(Vec2f(50.0f, BlueLabel->getPreferredSize().y()));
    BlueLabel->setBackgrounds(NULL);
    BlueLabel->setBorders(NULL);

    LabelRefPtr AlphaLabel = Label::create();
    if(getIncludeAlpha())
    {
        AlphaLabel->setText("Alpha");
        AlphaLabel->setPreferredSize(Vec2f(50.0f, AlphaLabel->getPreferredSize().y()));
        AlphaLabel->setBackgrounds(NULL);
        AlphaLabel->setBorders(NULL);
    }

    //Layout
    SpringLayoutRefPtr RGBPanelLayout = SpringLayout::create();

    //Red
    //Label
    RGBPanelLayout->putConstraint(SpringLayoutConstraints::WEST_EDGE, RedLabel, 5.0f, SpringLayoutConstraints::WEST_EDGE, this);
    RGBPanelLayout->putConstraint(SpringLayoutConstraints::NORTH_EDGE, RedLabel, 5.0f, SpringLayoutConstraints::NORTH_EDGE, this);
    RGBPanelLayout->putConstraint(SpringLayoutConstraints::WIDTH_EDGE, RedLabel, LayoutSpringUnrecPtr(LayoutSpring::width(RedLabel)));