Examples of ScrollBar

com.pointcliki.ui.ScrollBar
de.lessvoid.nifty.controls.Scrollbar
Scrollbar. @author void
java.awt.Scrollbar
The Scrollbar class embodies a scroll bar, a familiar user-interface object. A scroll bar provides a convenient means for allowing a user to select from a range of values. The following three vertical scroll bars could be used as slider controls to pick the red, green, and blue components of a color:

Each scroll bar in this example could be created with code similar to the following:
```
 redSlider=new Scrollbar(Scrollbar.VERTICAL, 0, 1, 0, 255); add(redSlider); 
```
Alternatively, a scroll bar can represent a range of values. For example, if a scroll bar is used for scrolling through text, the width of the "bubble" (also called the "thumb" or "scroll box") can be used to represent the amount of text that is visible. Here is an example of a scroll bar that represents a range:

The value range represented by the bubble in this example is the visible amount. The horizontal scroll bar in this example could be created with code like the following:
```
 ranger = new Scrollbar(Scrollbar.HORIZONTAL, 0, 60, 0, 300); add(ranger); 
```
Note that the actual maximum value of the scroll bar is the maximum minus the visible amount. In the previous example, because the maximum is 300 and the visible amount is 60, the actual maximum value is 240. The range of the scrollbar track is 0 - 300. The left side of the bubble indicates the value of the scroll bar.
Normally, the user changes the value of the scroll bar by making a gesture with the mouse. For example, the user can drag the scroll bar's bubble up and down, or click in the scroll bar's unit increment or block increment areas. Keyboard gestures can also be mapped to the scroll bar. By convention, the Page Up and Page Down keys are equivalent to clicking in the scroll bar's block increment and block decrement areas.
When the user changes the value of the scroll bar, the scroll bar receives an instance of AdjustmentEvent. The scroll bar processes this event, passing it along to any registered listeners.
Any object that wishes to be notified of changes to the scroll bar's value should implement AdjustmentListener, an interface defined in the package java.awt.event. Listeners can be added and removed dynamically by calling the methods addAdjustmentListener and removeAdjustmentListener.
The AdjustmentEvent class defines five types of adjustment event, listed here:
- AdjustmentEvent.TRACK is sent out when the user drags the scroll bar's bubble.
- AdjustmentEvent.UNIT_INCREMENT is sent out when the user clicks in the left arrow of a horizontal scroll bar, or the top arrow of a vertical scroll bar, or makes the equivalent gesture from the keyboard.
- AdjustmentEvent.UNIT_DECREMENT is sent out when the user clicks in the right arrow of a horizontal scroll bar, or the bottom arrow of a vertical scroll bar, or makes the equivalent gesture from the keyboard.
- AdjustmentEvent.BLOCK_INCREMENT is sent out when the user clicks in the track, to the left of the bubble on a horizontal scroll bar, or above the bubble on a vertical scroll bar. By convention, the Page Up key is equivalent, if the user is using a keyboard that defines a Page Up key.
- AdjustmentEvent.BLOCK_DECREMENT is sent out when the user clicks in the track, to the right of the bubble on a horizontal scroll bar, or below the bubble on a vertical scroll bar. By convention, the Page Down key is equivalent, if the user is using a keyboard that defines a Page Down key.
The JDK 1.0 event system is supported for backwards compatibility, but its use with newer versions of the platform is discouraged. The five types of adjustment events introduced with JDK 1.1 correspond to the five event types that are associated with scroll bars in previous platform versions. The following list gives the adjustment event type, and the corresponding JDK 1.0 event type it replaces.
- AdjustmentEvent.TRACK replaces Event.SCROLL_ABSOLUTE
- AdjustmentEvent.UNIT_INCREMENT replaces Event.SCROLL_LINE_UP
- AdjustmentEvent.UNIT_DECREMENT replaces Event.SCROLL_LINE_DOWN
- AdjustmentEvent.BLOCK_INCREMENT replaces Event.SCROLL_PAGE_UP
- AdjustmentEvent.BLOCK_DECREMENT replaces Event.SCROLL_PAGE_DOWN
Note: We recommend using a Scrollbar for value selection only. If you want to implement a scrollable component inside a container, we recommend you use a {@link ScrollPane ScrollPane}. If you use a Scrollbar for this purpose, you are likely to encounter issues with painting, key handling, sizing and positioning. @version 1.112, 07/11/06 @author Sami Shaio @see java.awt.event.AdjustmentEvent @see java.awt.event.AdjustmentListener @since JDK1.0
javafx.scene.control.ScrollBar
org.apache.pivot.wtk.ScrollBar
Component that allows a user to select one of a range of values. Most often used by scroll panes.
org.eclipse.draw2d.ScrollBar
org.eclipse.swt.widgets.ScrollBar
/swt/examples.php">SWT Example: ControlExample @see Sample code and further information @noextend This class is not intended to be subclassed by clients.
org.joshy.gfx.node.control.Scrollbar
pivot.wtk.ScrollBar
Component that allows a user to select one of a range of values. Most often used by scroll panes. @author gbrown
pu.web.client.gui.Scrollbar

Examples of org.eclipse.swt.widgets.ScrollBar


  private void onTreeResize() {
    int totalWidth = fTree.getParent().getClientArea().width;
    totalWidth -= fTree.getBorderWidth() * 2;


    ScrollBar verticalBar = fTree.getVerticalBar();
    if (verticalBar != null)
      totalWidth -= fTree.getVerticalBar().getSize().x;


    /* Bug on Mac: Width is too big */
    if (Application.IS_MAC)

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Examples of org.eclipse.swt.widgets.ScrollBar

  }
  
  private void propagateScrollBarVisiblity(){
    setScrollbars();
    for(Dimension d : HOR_VER){
      ScrollBar bar = scrollBars.get(d);
      boolean shouldBeVisible =  scrollBarsVisible.get(d);
      if(bar != null && bar.isVisible() != shouldBeVisible){
        bar.setVisible(shouldBeVisible);
      }
    }
  }

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Examples of org.eclipse.swt.widgets.ScrollBar

  }
  
  private void updateScrollBars(){
    setScrollbars();
    for(Dimension d : HOR_VER){
      ScrollBar bar = scrollBars.get(d);
      if(bar == null) {
        continue;
      }
      double diff = figure.size.get(d) - viewPortSize.get(d);
      viewPortLocation.setMinMax(d, 0, diff);
      bar.setMinimum(0);
      bar.setMaximum(FigureMath.ceil( figure.size.get(d)));
      bar.setIncrement(50);
      int selSize = FigureMath.floor(viewPortSize.get(d));
      bar.setPageIncrement(selSize);
      bar.setThumb(selSize);
      bar.setSelection((int)viewPortLocation.get(d));
    }
  }

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Examples of org.eclipse.swt.widgets.ScrollBar

  @Override
  public void widgetSelected(SelectionEvent e) {
    setScrollbars();
    for(Dimension d : HOR_VER){
      
      ScrollBar bar = scrollBars.get(d);
      
      if(bar != null){
        viewPortLocation.set(d,bar.getSelection());
        Rectangle part = getViewPortRectangle();
        adjustOverlaps(part);
      } else {
      }
    }

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Examples of org.eclipse.swt.widgets.ScrollBar

        int maxWidth = 0;
        for (final TokenHighlight item : fColors) {
            maxWidth = Math.max(maxWidth, convertWidthInCharsToPixels(item.getName()
                    .length()));
        }
        final ScrollBar vBar = ((Scrollable) fListViewer.getControl()).getVerticalBar();
        if (vBar != null) {
            maxWidth += vBar.getSize().x * 3; // scrollbars and tree
        }
        // indentation guess
        gd.widthHint = maxWidth;


        fListViewer.getControl().setLayoutData(gd);

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Examples of org.eclipse.swt.widgets.ScrollBar

        }
    }


    /* Initalize the scrollbar and register listeners. */
    private void initScrollBars() {
        final ScrollBar horizontal = getHorizontalBar();
        horizontal.setEnabled(false);
        horizontal.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(final SelectionEvent event) {
                scrollHorizontally((ScrollBar) event.widget);
            }
        });
        final ScrollBar vertical = getVerticalBar();
        vertical.setEnabled(false);
        vertical.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(final SelectionEvent event) {
                scrollVertically((ScrollBar) event.widget);
            }
        });

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Examples of org.eclipse.swt.widgets.ScrollBar

        }
        if (ty > 0) {
            ty = 0;
        }


        final ScrollBar horizontal = getHorizontalBar();
        horizontal.setIncrement(getClientArea().width / 100);
        horizontal.setPageIncrement(getClientArea().width);
        final Rectangle imageBound = sourceImage.getBounds();
        final int cw = getClientArea().width, ch = getClientArea().height;
        if (imageBound.width * sx > cw) { /* image is wider than client area */
            horizontal.setMaximum((int) (imageBound.width * sx));
            horizontal.setEnabled(true);
            if ((int) -tx > horizontal.getMaximum() - cw) {
                tx = -horizontal.getMaximum() + cw;
            }
        } else { /* image is narrower than client area */
            horizontal.setEnabled(false);
            tx = (cw - imageBound.width * sx) / 2; // center if too small.
        }
        horizontal.setSelection((int) -tx);
        horizontal.setThumb(getClientArea().width);


        final ScrollBar vertical = getVerticalBar();
        vertical.setIncrement(getClientArea().height / 100);
        vertical.setPageIncrement(getClientArea().height);
        if (imageBound.height * sy > ch) { /* image is higher than client area */
            vertical.setMaximum((int) (imageBound.height * sy));
            vertical.setEnabled(true);
            if ((int) -ty > vertical.getMaximum() - ch) {
                ty = -vertical.getMaximum() + ch;
            }
        } else { /* image is less higher than client area */
            vertical.setEnabled(false);
            ty = (ch - imageBound.height * sy) / 2; // center if too small.
        }
        vertical.setSelection((int) -ty);
        vertical.setThumb(getClientArea().height);


        /* update transform. */
        af = AffineTransform.getScaleInstance(sx, sy);
        af.preConcatenate(AffineTransform.getTranslateInstance(tx, ty));
        transform = af;

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Examples of org.eclipse.swt.widgets.ScrollBar

      // Install the listeners for events that need to be monitored for
      // popup closure.
      void installListeners() {
        // Listeners on this popup's table and scroll bar
        proposalTable.addListener(SWT.FocusOut, this);
        ScrollBar scrollbar = proposalTable.getVerticalBar();
        if (scrollbar != null) {
          scrollbar.addListener(SWT.Selection, this);
        }


        // Listeners on this popup's shell
        getShell().addListener(SWT.Deactivate, this);
        getShell().addListener(SWT.Close, this);

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Examples of org.eclipse.swt.widgets.ScrollBar


      // Remove installed listeners
      void removeListeners() {
        if (isValid()) {
          proposalTable.removeListener(SWT.FocusOut, this);
          ScrollBar scrollbar = proposalTable.getVerticalBar();
          if (scrollbar != null) {
            scrollbar.removeListener(SWT.Selection, this);
          }


          getShell().removeListener(SWT.Deactivate, this);
          getShell().removeListener(SWT.Close, this);
        }

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Examples of org.eclipse.swt.widgets.ScrollBar

            //use a monospaced font for a better layout
            Font font = new Font(compositeHolder.getDisplay(), "Courier", 10, SWT.NORMAL);
            hexText.setFont(font);
            asciiText.setFont(font);


            final ScrollBar hexScrollBar = hexText.getVerticalBar();
            final ScrollBar asciiScrollBar = asciiText.getVerticalBar();


            //create a sub composite to contain all the buttons
            final Composite buttonComposite = toolkit.createComposite(localComposite, SWT.NONE);
            layout = new GridLayout(7, false);
            layout.marginWidth = 0;
            buttonComposite.setLayout(layout);
            buttonComposite.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 2, 1));


            _firstButton = toolkit.createButton(buttonComposite, "<<", SWT.PUSH);
            GridData layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            _firstButton.setLayoutData(layoutData);
            _firstButton.setToolTipText("See the first n bytes");


            _previousButton = toolkit.createButton(buttonComposite, "<", SWT.PUSH);
            layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            _previousButton.setLayoutData(layoutData);
            _previousButton.setToolTipText("See the previous n bytes");
            _previousButton.setEnabled(false);


            _hexNumTextToStart = toolkit.createText(buttonComposite, "0");
            layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            _hexNumTextToStart.setLayoutData(layoutData);
            _hexNumTextToStart.setEditable(false);


            final Text hexNumText = toolkit.createText(buttonComposite, "" + startContentSize);
            layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            hexNumText.setLayoutData(layoutData);


            _hexNumTextToEnd = toolkit.createText(buttonComposite, "" + (byteArray.length - startContentSize));
            layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            _hexNumTextToEnd.setLayoutData(layoutData);
            _hexNumTextToEnd.setEditable(false);


            _nextButton = toolkit.createButton(buttonComposite, ">", SWT.PUSH);
            layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            _nextButton.setLayoutData(layoutData);
            _nextButton.setToolTipText("See the next n bytes");
            _nextButton.setEnabled(true);


            _lastButton = toolkit.createButton(buttonComposite, ">>", SWT.PUSH);
            layoutData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
            layoutData.widthHint = 40;
            _lastButton.setToolTipText("See the last n bytes");
            _lastButton.setLayoutData(layoutData);


            SelectionListener listener = new SelectionAdapter()
            {
                public void widgetSelected(SelectionEvent e)
                {
                    if (e.widget instanceof Button)
                    {
                        String numOfBytes = hexNumText.getText();
                        try
                        {
                            int n = Integer.parseInt(numOfBytes);


                            //Reset range display if user requests a large value
                            if (n > byteArray.length)
                            {
                                n = (byteArray.length > DEFAULT_CONTENT_SIZE) ? DEFAULT_CONTENT_SIZE : byteArray.length;
                                hexNumText.setText("" + n);
                            }


                            //rest if the user requests 0
                            if (n < 1)
                            {
                                n = DEFAULT_CONTENT_SIZE;
                                hexNumText.setText("" + n);
                            }


                            Button button = (Button) e.widget;
                            hexText.setText(displayByteFormat(localComposite, byteArray, n * 2, thisEncoding,
                                                              button.getText(), true));
                            asciiText.setText(displayByteFormat(localComposite, byteArray, n * 2, thisEncoding,
                                                                button.getText(), false));
                        }
                        catch (NumberFormatException exp)
                        {
                            popupErrorMessage("Error", "Please input the number of bytes you wish to look at");
                        }
                    }
                    if (e.widget instanceof ScrollBar)
                    {
                        //synchronize the movements of the two scrollbars
                        ScrollBar sb = (ScrollBar) e.widget;
                        if (sb.getParent().equals(hexText))
                        {
                            asciiScrollBar.setIncrement(sb.getIncrement());
                            asciiScrollBar.setSelection(sb.getSelection());
                        }
                        else if (sb.getParent().equals(asciiText))
                        {
                            hexScrollBar.setSelection(sb.getSelection());
                            hexScrollBar.setIncrement(sb.getIncrement());
                        }
                    }
                }
            };
            localComposite.addControlListener(new ControlAdapter()

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