Java ScrollPolicy类代码示例

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
public void repositionComponents() {
    scrollviewport.setBounds(0, 0, this.getWidth(), this.getHeight());
    if (this.vpolicy.equals(ScrollPolicy.VERTICAL_BAR_ALWAYS) || this.vpolicy.equals(ScrollPolicy.VERTICAL_BAR_AS_NEEDED)) {
        verticalbar.setBounds(this.getWidth() - this.thumbWidth, 7,
                this.thumbWidth, this.getHeight() - this.thumbWidth - 7);
    } else {
        verticalbar.setBounds(this.getWidth() - this.thumbWidth, 7,
                0, 0);
    }
    if (this.hpolicy.equals(ScrollPolicy.HORIZONTAL_BAR_ALWAYS)) {
        horizontalbar.setBounds(7, this.getHeight() - this.thumbWidth,
                this.getWidth() - this.thumbWidth - 7, this.thumbWidth);
    } else if (this.hpolicy.equals(ScrollPolicy.HORIZONTAL_BAR_AS_NEEDED)) {
        if (this.getWidth() < this.scrollviewport.getViewport().getView().getWidth() - 2) {
            horizontalbar.setBounds(7, this.getHeight() - this.thumbWidth,
                    this.getWidth() - this.thumbWidth - 7, this.thumbWidth);
        } else {
            horizontalbar.setBounds(7, this.getHeight() - this.thumbWidth,
                    0, 0);
        }
    }
    this.revalidate();
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * constructor
 * @param i
 * @param canvas
 * @param ex
 */
GlassCard(int i, Canvas canvas, GlassExplorer ex) {
    this.index = i;
    this.explorer = ex;
    this.canvas = canvas;
    this.button = new GlassButton(canvas.getColor(), canvas.getColor().brighter().brighter().brighter(), canvas.getName());
    //this.button.setMaximumSize(new Dimension(0,10));
    //this.button.setPreferredSize(new Dimension(0,10));
    this.scroll = new CGlassScrollPane(
            canvas.getJComponent(),
            ScrollPolicy.VERTICAL_BAR_AS_NEEDED,
            ScrollPolicy.HORIZONTAL_BAR_NEVER,
            SCROLLBAR_WIDTH, canvas.getColor(),
            new Color(100, 100, 100, 100));
    canvas.getJComponent().setOpaque(false);
    button.addActionListener(this);
    canvas.getJComponent().addPropertyChangeListener(this);
    this.scroll.setPreferredSize(
            new Dimension(canvas.getJComponent().getPreferredSize().width + SCROLLBAR_WIDTH,
            canvas.getJComponent().getPreferredSize().height));
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * Reassigns the set of canvases that this explorer controls.
 * Though the collection of canvas mnay be empty, it may not be null.
 * @param items
 *
 * @requires items != null &&
 * 			 for each element in item, element!= null
 */
public void setDrawersCard(List<? extends Canvas> items) {
    canvases.clear();
    buttonPane.removeAll();
    for (int i = 0; i < items.size(); i++) {
        final int index = i;
        Canvas item = items.get(i);
        //final CButton button = new CButton(item.getColor(), item.getColor().brighter().brighter().brighter(),item.getName());
        CButton button = new CBorderlessButton(item.getName());
        JComponent scroll = new CHoverScrollPane(
                item.getJComponent(),
                ScrollPolicy.VERTICAL_BAR_AS_NEEDED,
                ScrollPolicy.HORIZONTAL_BAR_AS_NEEDED,
                18, item.getColor(), Color.darkGray);
        button.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                selectCanvas(index);
            }
        });
        canvases.add(scroll);
        buttonPane.add(button);
    }
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * Constructor
 */
public PopupExplorer() {
    super();
    this.components = new ArrayList<Canvas>();
    this.setLayout(null);
    this.setOpaque(true);
    this.setBackground(Color.GRAY);

    this.viewport = new JPanel(new BorderLayout());
    scroll = new CHoverScrollPane(
            viewport,
            ScrollPolicy.VERTICAL_BAR_ALWAYS,
            ScrollPolicy.HORIZONTAL_BAR_NEVER,
            20, Color.blue, new Color(0, 0, 50));
    add(scroll, JLayeredPane.DEFAULT_LAYER);
    setLayer(scroll, JLayeredPane.DEFAULT_LAYER, 0);

    buttonPane = new ButtonPanel();
    add(buttonPane, JLayeredPane.PALETTE_LAYER);
    setLayer(buttonPane, JLayeredPane.PALETTE_LAYER, 0);
    this.addComponentListener(this);
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/** Constructor */
private CardPane() {
    super(new BorderLayout());
    this.setOpaque(false);
    this.scroll = new CHoverScrollPane(
            canvas.getJComponent(),
            ScrollPolicy.VERTICAL_BAR_AS_NEEDED,
            ScrollPolicy.HORIZONTAL_BAR_AS_NEEDED,
            18, canvas.getColor(), new Color(100, 100, 100, 100));
    this.label = new CardLabel();
    this.add(label, BorderLayout.NORTH);
    this.add(scroll, BorderLayout.CENTER);
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * Reassigns the set of canvases that this explorer controls.
 * Though the collection of canvas mnay be empty, it may not be null.
 * @param items
 *
 * @requires items != null &&
 * 			 for each element in item, element!= null
 */
public void setDrawersCard(List<? extends Canvas> items) {
    canvases.clear();
    buttonPane.removeAll();
    int size = items.size();
    if (size % 2 == 1) {
        size++;
    }
    size = buttonHeight * size;
    buttonPane.setPreferredSize(new Dimension(6, size));
    for (int i = 0; i < items.size(); i++) {
        final int index = i;
        Canvas item = items.get(i);
        //final CButton button = new CButton(item.getColor(), item.getColor().brighter().brighter().brighter(),item.getName());
        CButton button = new CBorderlessButton(item.getName());
        JComponent scroll = new CHoverScrollPane(
                item.getJComponent(),
                ScrollPolicy.VERTICAL_BAR_AS_NEEDED,
                ScrollPolicy.HORIZONTAL_BAR_AS_NEEDED,
                18, item.getColor(), Color.darkGray);
        canvases.add(scroll);
        button.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                selectCanvas(index);
            }
        });
        buttonPane.add(button);
    }
    if (!canvases.isEmpty()) {
        canvasPane.add(canvases.get(0));
    }
    this.revalidate();

}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 *
 * @param barwidth - the final HEIGHT on the thumb
 * @param thumbColor -  the final color of the thumb's interior
 * @param trackColor - the final color of trh track
 * @param modelrange - the mutating view ranges to control
 * 					  and be controlled by this HorizontalBar
 *
 * @requires barwidth != null && thumbColor != null && modelrange != null
 * @effects Constructs this to have a thumb of barwidth in size
 * 			with a thumb color set to thummbColor.
 */
public HoverVerticalBar(int barwidth, Color thumbColor, Color trackColor, BoundedRangeModel modelrange, ScrollPolicy verticalPolicy) {
    this.vpolicy = verticalPolicy;
    this.trackColor = trackColor;
    this.modelrange = modelrange;
    this.thumbColor = thumbColor;
    this.renderingHints = new RenderingHints(
            RenderingHints.KEY_ANTIALIASING,
            RenderingHints.VALUE_ANTIALIAS_ON);
    this.pressLocation = 0;
    this.setOpaque(false);
    this.addMouseMotionListener(this);
    this.addMouseListener(this);
    this.addMouseWheelListener(this);
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * paints scrollbar
 */
@Override
public void paint(Graphics g) {
    //paint super
    super.paint(g);

    //set up values
    double viewValue = modelToView(modelrange.getValue());
    double viewExtent = modelToView(modelrange.getExtent());
    int vWidth;
    if (!vpolicy.equals(ScrollPolicy.VERTICAL_BAR_AS_NEEDED) || (modelrange.getMaximum() > this.getHeight() + 7 + this.getWidth())) {
        vWidth = this.getWidth() / 2;

        Graphics2D g2 = (Graphics2D) g;
        g2.addRenderingHints(renderingHints);
        g2.translate(vWidth / 2, 0);
        g2.setColor(trackColor);
        g2.fillRoundRect(0, 0, vWidth, this.getHeight(), vWidth, vWidth);
        g2.setColor(new Color(150, 150, 150));
        g2.drawRoundRect(0, 0, vWidth, this.getHeight() - 1, vWidth, vWidth);

        if (viewValue < this.getHeight() - 0.5f * this.getWidth()) {
            g2.translate(0, viewValue);
        } else {
            g2.translate(0, this.getHeight() - 0.5f * this.getWidth());
        }
        g2.setPaint(new GradientPaint(
                0, 0, this.thumbColor,
                this.getWidth() + 10, 0, Color.black, true));
        g2.fillRoundRect(0, 0, vWidth, (int) viewExtent, vWidth, vWidth);
        g2.setColor(new Color(250, 250, 250, 100));
        g2.drawRoundRect(0, 0, vWidth, (int) viewExtent, vWidth, vWidth);

    }
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
CPopupMenu() {
    super();
    this.setLayout(new BorderLayout());
    this.setBackground(background);
    this.setOpaque(false);
    this.removeAll();
    this.setBorder(BorderFactory.createMatteBorder(2, 2, 2, 2, CGraphite.blue));
    view = new JPanel(new GridLayout(0, 1));
    view.setBackground(background);
    scroll = new CTracklessScrollPane(view,
            ScrollPolicy.VERTICAL_BAR_AS_NEEDED,
            ScrollPolicy.HORIZONTAL_BAR_NEVER,
            9, CGraphite.blue, background);
    this.add(scroll);
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * Create a new Table instance with an empty domain
 * @param i - thumb width
 */
public CTable(int i) {
    super(new BorderLayout());
    this.columns = new String[]{};
    this.columnLabels = new JLabel[]{};
    this.data = new ArrayList<double[]>();
    view = new JPanel();
    view.setBackground(foreground);
    scroll = new CTracklessScrollPane(
            view,
            ScrollPolicy.VERTICAL_BAR_AS_NEEDED,
            ScrollPolicy.HORIZONTAL_BAR_AS_NEEDED,
            i, CGraphite.blue, new Color(100, 100, 100));
    this.add(scroll, BorderLayout.CENTER);
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * Constructs BlockCanvas and subscribes
 * this BlockCanvas to PageChange events
 */
public BlockCanvas(Workspace workspace) {
    this.workspace = workspace;
    this.canvas = new Canvas();
    this.scrollPane = new CHoverScrollPane(canvas,
            ScrollPolicy.VERTICAL_BAR_ALWAYS,
            ScrollPolicy.HORIZONTAL_BAR_ALWAYS,
            18, CGraphite.blue, null);
    scrollPane.setScrollingUnit(5);
    canvas.setLayout(null);
    canvas.setBackground(Color.gray);
    canvas.setOpaque(true);
    PageChangeEventManager.addPageChangeListener(this);
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
public CWheeler(Collection<JComponent> items, boolean includeScrollbar, Color backgroundColor) {
    super(new BorderLayout());
    this.setBackground(backgroundColor);
    this.elements = items;
    if (includeScrollbar) {
        CArrowButton left = new CArrowButton(CArrowButton.Direction.WEST) {
            private static final long serialVersionUID = 328149080242L;
            @Override
            public void triggerAction() {
                scrollLeft();
            }
        };
        left.addActionListener(left);
        left.setPreferredSize(new Dimension(15, 15));
        CArrowButton right = new CArrowButton(CArrowButton.Direction.EAST) {
            private static final long serialVersionUID = 328149080243L;
            @Override
            public void triggerAction() {
                scrollRight();
            }
        };
        right.addActionListener(right);
        right.setPreferredSize(new Dimension(15, 15));
        this.view = new JPanel(null);
        this.view.setBackground(backgroundColor);
        this.scroll = new CHoverScrollPane(view,
                ScrollPolicy.VERTICAL_BAR_NEVER,
                ScrollPolicy.HORIZONTAL_BAR_ALWAYS,
                20, CGraphite.blue, new Color(0, 0, 50));

        JPanel leftPane = new JPanel(new BorderLayout());
        leftPane.setBackground(backgroundColor);
        leftPane.add(left, BorderLayout.SOUTH);
        this.add(leftPane, BorderLayout.WEST);
        JPanel rightPane = new JPanel(new BorderLayout());
        rightPane.setBackground(backgroundColor);
        rightPane.add(right, BorderLayout.SOUTH);
        this.add(rightPane, BorderLayout.EAST);
    } else {
        this.view = new JPanel(null);
        this.view.setBackground(backgroundColor);
        this.scroll = new CTracklessScrollPane(view,
                ScrollPolicy.VERTICAL_BAR_NEVER,
                ScrollPolicy.HORIZONTAL_BAR_NEVER,
                20, Color.blue, new Color(0, 0, 50));
    }
    for (JComponent element : elements) {
        view.add(element);
    }
    this.add(scroll, BorderLayout.CENTER);
    reformItems();
}
 

import edu.mit.blocks.codeblockutil.CScrollPane.ScrollPolicy; //导入依赖的package包/类
/**
 * Constructs a custom CHoverScrollPane with the view port set to "view",
 * with both scroll bar policies set to "ALWAYS" (see
 * javax.swing.JScrollPane for a description on the use of
 * scroll bar policies).  Thumb will have  girth of 10 and an interior
 * color of black, hovering above a grayed-out transparant background.
 *
 * @param view
 *
 * @requires view != null
 * @effects constructs a CScrollPane as described in method overview
 */
public CHoverScrollPane(JComponent view) {
    this(view, ScrollPolicy.VERTICAL_BAR_ALWAYS,
            ScrollPolicy.HORIZONTAL_BAR_ALWAYS);
}