edu.uci.ics.jung.visualization.swt
Class GraphZoomScrollPane<V,E>

java.lang.Object
  org.eclipse.swt.widgets.Widget
      org.eclipse.swt.widgets.Control
          org.eclipse.swt.widgets.Scrollable
              org.eclipse.swt.widgets.Composite
                  edu.uci.ics.jung.visualization.swt.GraphZoomScrollPane<V,E>

All Implemented Interfaces:

org.eclipse.swt.graphics.Drawable

public class GraphZoomScrollPane<V,E>
extends org.eclipse.swt.widgets.Composite

GraphZoomScrollPane is a Container for the Graph's VisualizationViewer and includes custom horizontal and vertical scrollbars. GraphZoomScrollPane listens for changes in the scale and translation of the VisualizationViewer, and will update the scrollbar positions and sizes accordingly. Changes in the scrollbar positions will cause the corresponding change in the translation component (offset) of the VisualizationViewer. The scrollbars are modified so that they will allow panning of the graph when the scale has been changed (e.g. zoomed-in or zoomed-out). The lower-right corner of this component is available to use as a small button or menu. samples.graph.GraphZoomScrollPaneDemo shows the use of this component.

Author:

Tom Nelson

Nested Class Summary

protected class

GraphZoomScrollPane.ResizeListener Listener to adjust the scroll bar parameters when the window is resized

Field Summary

protected org.eclipse.swt.widgets.Composite	corner
protected org.eclipse.swt.widgets.Slider	horizontalScrollBar
protected boolean	scrollBarsMayControlAdjusting
protected org.eclipse.swt.widgets.Composite	south
protected org.eclipse.swt.widgets.Slider	verticalScrollBar
VisualizationComposite<V,E>	vv

Fields inherited from class org.eclipse.swt.widgets.Control

handle

Constructor Summary

GraphZoomScrollPane(org.eclipse.swt.widgets.Composite parent, int style, Layout<V,E> layout, Dimension preferredSize)
Create an instance of the GraphZoomScrollPane to contain the VisualizationViewer

Method Summary

org.eclipse.swt.widgets.Composite	getCorner()
protected void	setScrollBarValues(Rectangle rectangle, Point2D h0, Point2D h1, Point2D v0, Point2D v1)

Methods inherited from class org.eclipse.swt.widgets.Composite

changed, checkSubclass, computeSize, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList

Methods inherited from class org.eclipse.swt.widgets.Scrollable

computeTrim, getClientArea, getHorizontalBar, getVerticalBar

Methods inherited from class org.eclipse.swt.widgets.Control

addControlListener, addFocusListener, addHelpListener, addKeyListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addPaintListener, addTraverseListener, computeSize, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getParent, getShell, getSize, getToolTipText, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, redraw, redraw, removeControlListener, removeFocusListener, removeHelpListener, removeKeyListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removePaintListener, removeTraverseListener, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setParent, setRedraw, setSize, setSize, setToolTipText, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, update

Methods inherited from class org.eclipse.swt.widgets.Widget

addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, setData, setData, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

vv

public VisualizationComposite<V,E> vv

horizontalScrollBar

protected org.eclipse.swt.widgets.Slider horizontalScrollBar

verticalScrollBar

protected org.eclipse.swt.widgets.Slider verticalScrollBar

corner

protected org.eclipse.swt.widgets.Composite corner

scrollBarsMayControlAdjusting

protected boolean scrollBarsMayControlAdjusting

south

protected org.eclipse.swt.widgets.Composite south

Constructor Detail

GraphZoomScrollPane

public GraphZoomScrollPane(org.eclipse.swt.widgets.Composite parent,
                           int style,
                           Layout<V,E> layout,
                           Dimension preferredSize)

Create an instance of the GraphZoomScrollPane to contain the VisualizationViewer

Parameters:

vv -

Method Detail

setScrollBarValues

protected void setScrollBarValues(Rectangle rectangle,
                                  Point2D h0,
                                  Point2D h1,
                                  Point2D v0,
                                  Point2D v1)

getCorner

public org.eclipse.swt.widgets.Composite getCorner()

Returns:

Returns the corner component.