Java Sash.addListener方法代码示例

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
public JoSashForm(final Composite parent, final ISplitCompositeSetupSpi setup) {
    super(parent, getSashFormStyle(setup));
    resizePolicy = setup.getResizePolicy();
    sashUtil = getSashUtil(setup);
    layout = new JoSashFormLayout(this, sashUtil);
    setLayout(layout);

    sash = new Sash(this, getSashStyle(setup));
    sash.setToolTipText(getToolTipText());
    sash.addListener(SWT.Selection, new Listener() {
        @Override
        public void handleEvent(final Event event) {
            if (event.detail == SWT.DRAG) {
                return;
            }
            onDragSash(event);
        }
    });

    firstMinSize = new Point(SPLIT_MINIMUM, SPLIT_MINIMUM);
    secondMinSize = new Point(SPLIT_MINIMUM, SPLIT_MINIMUM);
}
 

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
/**
 * Create the <code>Sash</code>with left control on the left. Note that
 * this method assumes <code>GridData</code> for the layout data of the
 * leftControl.
 * 
 * @param composite the <code>Composite</code> to embed the
 *            <code>Sash</code> into
 * @param leftControl the <code>Control</code> at the left side of the
 *            <code>Sash</code>
 * @return Sash the created <code>Sash</code>
 */
protected Sash createSash(final Composite composite,
        final Control leftControl)
{
    final Sash sash = new Sash(composite, SWT.VERTICAL);
    sash.setLayoutData(new GridData(GridData.FILL_VERTICAL));
    sash.setBackground(composite.getDisplay().getSystemColor(
            SWT.COLOR_LIST_BACKGROUND));
    sash.addListener(SWT.Selection, new Listener() 
    {
        public void handleEvent(Event event)
        {
            if (event.detail == SWT.DRAG)
                return;

            int shift = event.x - sash.getBounds().x;
            GridData data = (GridData) leftControl.getLayoutData();
            int newWidthHint = data.widthHint + shift;
            int maxSize = getPageContainer().getSize().x / 2;
            if (newWidthHint > maxSize || newWidthHint < 70)
            {
                event.doit = false;
                return;
            }
            data.widthHint = newWidthHint;
            composite.layout(true);
        }
    });
    return (sash);
}
 

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
/**
 * Initialize the sasher, with the two given contained controls, the style,
 * {@link SWT#VERTICAL} or {@link SWT#HORIZONTAL}, and the percentage of
 * space initially used by the first Control.
 *
 * @param first first control (top or left)
 * @param second second control (down or right)
 * @param sasherStyle {@link SWT#VERTICAL} or {@link SWT#HORIZONTAL}.
 * @param percent percentage of space initially used by the first Control
 */
public void init(Control first, Control second,
    int sasherStyle, int percent) {
  this.sashStyle = sasherStyle;

  sash = new Sash(this, sashStyle);

  // create position instructions
  FormData firstData = new FormData();
  final FormData sashData = new FormData();
  FormData secondData = new FormData();

  // setup constant positions
  firstData.left = new FormAttachment(0);
  firstData.top = new FormAttachment(0);
  sashData.left = new FormAttachment(0);
  sashData.top = new FormAttachment(percent);
  secondData.right = new FormAttachment(100);
  secondData.bottom = new FormAttachment(100);

  // setup direction dependent positions
  if (isVertical()) { // horizontal == top/down
    firstData.right = new FormAttachment(sash);
    firstData.bottom = new FormAttachment(100);
    sashData.bottom = new FormAttachment(100);
    secondData.left = new FormAttachment(sash);
    secondData.top = new FormAttachment(0);
  } else {
    firstData.right = new FormAttachment(100);
    firstData.bottom = new FormAttachment(sash);
    sashData.right = new FormAttachment(100);
    secondData.left = new FormAttachment(0);
    secondData.top = new FormAttachment(sash);
  }

  // set the layouts
  first.setLayoutData(firstData);
  sash.setLayoutData(sashData);
  second.setLayoutData(secondData);

  // move event / constraints:
  sash.addListener(SWT.Selection, new Listener() {

    @Override
    public void handleEvent(Event e) {
      if (isVertical()) {
        resizeVertical(e, sashData);
      } else {
        resizeHorizontal(e, sashData);
      }
    }
  });
}
 

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
/**
 * Create the sash with right control on the right. Note that this method assumes GridData for the layout data of
 * the rightControl.
 * @param composite
 * @param rightControl
 * @return Sash
 */
protected Sash createSash(final Composite composite, final Control rightControl) {
	final Sash sash = new Sash(composite, SWT.VERTICAL);
	sash.setLayoutData(new GridData(GridData.FILL_VERTICAL));
	sash.setBackground(composite.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
	// the following listener resizes the tree control based on sash deltas.
	// If necessary, it will also grow/shrink the dialog.
	sash.addListener(SWT.Selection, new Listener() {
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt. widgets.Event)
		 */
		public void handleEvent(Event event) {
			if (event.detail == SWT.DRAG) {
				return;
			}
			int shift = event.x - sash.getBounds().x;
			GridData data = (GridData) rightControl.getLayoutData();
			int newWidthHint = data.widthHint + shift;
			if (newWidthHint < 20) {
				return;
			}
			Point computedSize = getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT);
			Point currentSize = getShell().getSize();
			// if the dialog wasn't of a custom size we know we can shrink
			// it if necessary based on sash movement.
			boolean customSize = !computedSize.equals(currentSize);
			data.widthHint = newWidthHint;
			setLastTreeWidth(newWidthHint);
			composite.layout(true);
			// recompute based on new widget size
			computedSize = getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT);
			// if the dialog was of a custom size then increase it only if
			// necessary.
			if (customSize) {
				computedSize.x = Math.max(computedSize.x, currentSize.x);
			}
			computedSize.y = Math.max(computedSize.y, currentSize.y);
			if (computedSize.equals(currentSize)) {
				return;
			}
			setShellSize(computedSize.x, computedSize.y);
			lastShellSize = getShell().getSize();
		}
	});
	return sash;
}
 

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
/**
 * Create the sash with right control on the right. Note
 * that this method assumes GridData for the layout data
 * of the rightControl.
 * @param composite
 * @param rightControl
 * @return Sash
 * 
 * @since 3.1
 */
protected Sash createSash(final Composite composite, final Control rightControl) {
	final Sash sash = new Sash(composite, SWT.VERTICAL);
	sash.setLayoutData(new GridData(GridData.FILL_VERTICAL));
	sash.setBackground(composite.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
	// the following listener resizes the tree control based on sash deltas.
	// If necessary, it will also grow/shrink the dialog.
	sash.addListener(SWT.Selection, new Listener() {
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
		 */
		public void handleEvent(Event event) {
			if (event.detail == SWT.DRAG) {
				return;
			}
			int shift = event.x - sash.getBounds().x;
			GridData data = (GridData) rightControl.getLayoutData();
			int newWidthHint = data.widthHint + shift;
			if (newWidthHint < 20) {
				return;
			}
			Point computedSize = getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT);
			Point currentSize = getShell().getSize();
			// if the dialog wasn't of a custom size we know we can shrink
			// it if necessary based on sash movement.
			boolean customSize = !computedSize.equals(currentSize);
			data.widthHint = newWidthHint;
			setLastTreeWidth(newWidthHint);
			composite.layout(true);
			// recompute based on new widget size
			computedSize = getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT);
			// if the dialog was of a custom size then increase it only if
			// necessary.
			if (customSize) {
				computedSize.x = Math.max(computedSize.x, currentSize.x);
			}
			computedSize.y = Math.max(computedSize.y, currentSize.y);
			if (computedSize.equals(currentSize)) {
				return;
			}
			setShellSize(computedSize.x, computedSize.y);
			lastShellSize = getShell().getSize();
		}
	});
	return sash;
}
 

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
@SuppressWarnings("unused")
public Control construct(Composite parent) {
	final Composite composite = new Composite(parent, SWT.NONE);
	GridDataFactory.swtDefaults().align(SWT.FILL, SWT.FILL)
			.grab(true, true).applyTo(composite);
	GridLayoutFactory.swtDefaults().numColumns(2).applyTo(composite);
	GridLayout layout = new GridLayout();

	Button button1 = new Button(composite, SWT.PUSH);
	button1.setText("Button 1");
	final Sash sash = new Sash(composite, SWT.VERTICAL);
	Button button2 = new Button(composite, SWT.PUSH);
	button2.setText("Button 2");

	final FormLayout form = new FormLayout();
	composite.setLayout(form);

	FormData button1Data = new FormData();
	button1Data.left = new FormAttachment(0, 0);
	button1Data.right = new FormAttachment(sash, 0);
	button1Data.top = new FormAttachment(0, 0);
	button1Data.bottom = new FormAttachment(100, 0);
	button1.setLayoutData(button1Data);

	final int limit = 20, percent = 50;
	final FormData sashData = new FormData();
	sashData.left = new FormAttachment(percent, 0);
	sashData.top = new FormAttachment(0, 0);
	sashData.bottom = new FormAttachment(100, 0);
	sash.setLayoutData(sashData);
	sash.addListener(SWT.Selection, new Listener() {
		public void handleEvent(Event e) {
			Rectangle sashRect = sash.getBounds();
			Rectangle shellRect = composite.getClientArea();
			int right = shellRect.width - sashRect.width - limit;
			e.x = Math.max(Math.min(e.x, right), limit);
			if (e.x != sashRect.x) {
				sashData.left = new FormAttachment(0, e.x);
				composite.layout();
			}
		}
	});

	FormData button2Data = new FormData();
	button2Data.left = new FormAttachment(sash, 0);
	button2Data.right = new FormAttachment(100, 0);
	button2Data.top = new FormAttachment(0, 0);
	button2Data.bottom = new FormAttachment(100, 0);
	button2.setLayoutData(button2Data);

	return null;

}
 

import org.eclipse.swt.widgets.Sash; //导入方法依赖的package包/类
public static Sash createVerticalSash(Composite parent,
                                      int leftMinSize,
                                      int rightMinSize,
                                      int loc,
                                      Composite left,
                                      FormData leftData,
                                      Composite right,
                                      FormData rightData)
{
    parent.setLayout(new FormLayout());

    FormData sashData = new FormData();
    final Sash sash = new Sash(parent, SWT.VERTICAL | SWT.SMOOTH);

    SashAdjustment listener =
        new SashAdjustment(parent, leftMinSize, rightMinSize, sash, sashData, -1);

    // If the sash is "dragged" update the layout to demonstrate the change.
    sash.addListener(SWT.Selection, listener);

    // Add a listener on the shell to listen for resize events.
    // Need to update the sash so that it maintains the min size
    // property
    parent.addControlListener(listener);

    // For now, the initial sash percentage is unset:
    int sashPercentage = -1;

    // Use the static SashPrecentage if it is set.
    if (loc == SWT.RIGHT) {
        if (sashPercentage == -1) {
            sashData.left = new FormAttachment(100, -rightMinSize);
        }
        else {
            sashData.left = new FormAttachment(sashPercentage, 0);
        }
    }
    else {
        if (sashPercentage == -1) {
            sashData.left = new FormAttachment(0, leftMinSize);
        }
        else {
            sashData.left = new FormAttachment(100 - sashPercentage, 0);
        }
    }
    sashData.top = new FormAttachment(0, 0);
    sashData.bottom = new FormAttachment(100, 0);
    sash.setLayoutData(sashData);

    leftData.right = new FormAttachment(sash, 0, SWT.LEFT);
    left.setLayoutData(leftData);

    rightData.left = new FormAttachment(sash, 0, SWT.RIGHT);
    right.setLayoutData(rightData);

    return sash;
}