bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabItem.java - platform/eclipse.platform.swt - Git at Google

 package org.eclipse.swt.custom;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved
  */

 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.widgets.*;

 public class CTabItem extends Item {
 	CTabFolder parent;
 	int x,y,width,height = 0;
 	String toolTipText;
 	Control control; // the tab page

 	private Image disabledImage;

 	// internal constants
 	private static final int LEFT_MARGIN = 3;
 	private static final int RIGHT_MARGIN = 3;
 	static final int TOP_MARGIN = 2;
 	static final int BOTTOM_MARGIN = 2;
 	private static final int INTERNAL_SPACING = 2;

 	private static final String ellipsis = "...";

 /**
  * Construct a CTabItem with the specified parent and style.
  */
 public CTabItem (CTabFolder parent, int style) {
 	this(parent, style, parent.getItemCount());
 }
 /**
  * Construct a CTabItem with the specified parent and style, inserted at
  * the specified index.
  */
 public CTabItem (CTabFolder parent, int style, int index) {
 	super (parent, checkStyle(style));
 	parent.createItem (this, index);
 }
 private static int checkStyle(int style) {
 	return SWT.NONE;
 }

 public void dispose () {
 	if (isDisposed()) return;
 	super.dispose();
 	parent.destroyItem(this);
 	parent = null;
 	control = null;
 	toolTipText = null;
 }
 /**
  * Return the bounds of the CTabItem.
  */
 public Rectangle getBounds () {
 	return new Rectangle(x, y, width, height);
 }
 /**
 * Gets the control.
 * <p>
 * @return the control
 *
 * @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
 *	when called from the wrong thread
 * @exception SWTError(ERROR_WIDGET_DISPOSED)
 *	when the widget has been disposed
 */
 public Control getControl () {
 	return control;
 }
 /**
  * Answer the display of the receiver's parent widget.
  */
 public Display getDisplay() {
 	if (parent == null) SWT.error(SWT.ERROR_WIDGET_DISPOSED);
 	return parent.getDisplay();
 }
 public Image getDisabledImage(){
 	return disabledImage;
 }
 /**
  * Return the parent of the CTabItem.
  */
 public CTabFolder getParent () {
 	return parent;
 }
 /**
  * Gets the tool tip text.
  * <p>
  * @return the tool tip text.
  *
  * @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
  *	when called from the wrong thread
  * @exception SWTError(ERROR_WIDGET_DISPOSED)
  *	when the widget has been disposed
  */
 public String getToolTipText () {
 	return toolTipText;
 }
 private int imageHeight() {
 	int imageHeight = 0;
 	if (parent.getImageHeight() != -1) {
 		imageHeight = parent.getImageHeight();
 	} else {
 		Image image = getImage();
 		if (image != null) {
 			imageHeight = image.getBounds().height;
 		}
 	}
 	return imageHeight;
 }
 private int imageWidth() {
 	int imageWidth = 0;
 	Image image = getImage();
 	if (image != null) {
 		imageWidth = image.getBounds().width;
 	}
 	return imageWidth;
 }
 /**
  * Paint the receiver.
  */
 void onPaint(GC gc, boolean isSelected) {

 	if (width == 0 || height == 0) return;

 	Display display = getDisplay();
 	Color highlightShadow = display.getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW);
 	Color normalShadow = display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);

 	int index = parent.indexOf(this);

 	if (isSelected) {
 		// draw a background image behind the text
 		if (parent.backgroundImage != null) {
 			if (index == parent.topTabIndex){
 				Rectangle imageRect = parent.backgroundImage.getBounds();
 				gc.drawImage(parent.backgroundImage, 0, 0, imageRect.width, imageRect.height,
 				                                   x + 1, y, width - 3, height);
 			} else {
 				Rectangle imageRect = parent.backgroundImage.getBounds();
 				gc.drawImage(parent.backgroundImage, 0, 0, imageRect.width, imageRect.height,
 				                                   x + 2, y, width - 4, height);
 			}
 		}

 		// draw tab lines
 		if (!parent.onBottom) {
 			gc.setForeground(normalShadow);
 			if (index != parent.topTabIndex) {
 				gc.drawLine(x + 1, y,              x + 1, y);
 				gc.drawLine(x,     y + 1,          x,     y + height - 2);
 				gc.drawLine(x,     y + height - 1, x,     y + height - 1);
 			}
 			gc.drawLine(x + width - 2, y,              x + width - 2, y);
 			gc.drawLine(x + width - 1, y + 1,          x + width - 1, y + height - 2);
 			gc.drawLine(x + width - 1, y + height - 1, x + width - 1, y + height - 1);

 			gc.setForeground(highlightShadow);
 			if (index != parent.topTabIndex) {
 				gc.drawLine(x + 2, y,              x + 2, y);
 				gc.drawLine(x + 1, y + 1,          x + 1, y + height - 2);
 				gc.drawLine(x + 1, y + height - 1, x + 1, y + height - 1);
 			} else {
 				gc.drawLine(x, y, x, y + height - 1);
 			}

 			gc.drawLine(x + width - 3, y,              x + width - 3, y);
 			gc.drawLine(x + width - 2, y + 1,          x + width - 2, y + height - 2);
 			gc.drawLine(x + width - 2, y + height - 1, x + width - 2, y + height - 1);

 			// light line across top
 			if (index != parent.topTabIndex) {
 				gc.drawLine(x + 3, y, x + width - 4, y);
 			} else {
 				gc.drawLine(x + 1, y, x + width - 4, y);
 			}
 		} else {
 			gc.setForeground(normalShadow);
 			if (index != parent.topTabIndex) {
 				gc.drawLine(x,     y,              x,     y);
 				gc.drawLine(x,     y + 1,          x,     y + height - 2);
 				gc.drawLine(x + 1, y + height - 1, x + 1, y + height - 1);
 			}
 			gc.drawLine(x + width - 1, y,              x + width - 1, y);
 			gc.drawLine(x + width - 1, y + 1,          x + width - 1, y + height - 2);
 			gc.drawLine(x + width - 2, y + height - 1, x + width - 2, y + height - 1);

 			gc.setForeground(highlightShadow);
 			if (index != parent.topTabIndex) {
 				gc.drawLine(x + 1, y,              x + 1, y);
 				gc.drawLine(x + 1, y + 1,          x + 1, y + height - 2);
 				gc.drawLine(x + 2, y + height - 1, x + 2, y + height - 1);
 			} else {
 				gc.drawLine(x, y, x, y + height - 1);
 			}

 			gc.drawLine(x + width - 2, y,              x + width - 2, y);
 			gc.drawLine(x + width - 2, y + 1,          x + width - 2, y + height - 2);
 			gc.drawLine(x + width - 3, y + height - 1, x + width - 3, y + height - 1);

 			// light line across top and bottom
 			if (index != parent.topTabIndex) {
 				gc.drawLine(x + 1, y, x + width - 2, y);
 				gc.drawLine(x + 2, y + height - 1, x + width - 4, y + height - 1);
 			} else {
 				gc.drawLine(x + 1, y, x + width - 2, y);
 				gc.drawLine(x + 1, y + height - 1, x + width - 4, y + height - 1);
 			}
 		}
 	}

 	// draw Image
 	int xDraw = x + LEFT_MARGIN;

 	Image image = getImage();
 	if (!isSelected && image != null) {
 		Image temp = getDisabledImage();
 		if (temp != null){
 			image = temp;
 		}
 	}
 	if (image != null) {
 		Rectangle imageBounds = image.getBounds();
 		int imageHeight = imageHeight();
 		int imageY = y + (height - parent.getImageHeight()) / 2;
 		gc.drawImage(image,
 			       imageBounds.x, imageBounds.y, imageBounds.width, imageBounds.height,
 			       xDraw, imageY, imageBounds.width, imageHeight);
 		xDraw += imageBounds.width + INTERNAL_SPACING;
 	}

 	// draw Text
 	int textWidth = x + width - xDraw - RIGHT_MARGIN;
 	if (isSelected && parent.showClose) {
 		textWidth = x + width - xDraw - parent.closeBar.getSize().x - RIGHT_MARGIN;
 	}
 	String text = shortenText(gc, getText(), textWidth);

 	if (isSelected && parent.selectionForeground != null) {
 		gc.setForeground(parent.selectionForeground);
 	} else {
 		gc.setForeground(parent.getForeground());
 	}
 	int textY = y + (height - textHeight(gc)) / 2;
 	gc.drawString(text, xDraw, textY, true);

 	gc.setForeground(parent.getForeground());
 }
 private String shortenText(GC gc, String text, int width) {
 	if (gc.textExtent(text).x <= width) return text;

 	int ellipseWidth = gc.textExtent(ellipsis).x;
 	int length = text.length();
 	int end = length - 1;
 	while (end > 0) {
 		text = text.substring(0, end);
 		int l1 = gc.textExtent(text).x;
 		if (l1 + ellipseWidth <= width) {
 			return text + ellipsis;
 		}
 		end--;
 	}
 	return "";
 }
 /**
  * Answer the preferred height of the receiver for the GC.
  */
 int preferredHeight(GC gc) {
 	return  Math.max(textHeight(gc), imageHeight()) + TOP_MARGIN + BOTTOM_MARGIN;
 }
 /**
  * Answer the preferred width of the receiver for the GC.
  */
 int preferredWidth(GC gc) {
 	int tabWidth = LEFT_MARGIN + RIGHT_MARGIN;
 	Image image = getImage();
 	if (image != null) tabWidth += imageWidth() + INTERNAL_SPACING;
 	tabWidth += textWidth(gc);
 	if (parent.showClose) tabWidth += parent.closeBar.getSize().x;
 	return tabWidth;
 }
 /**
  * Sets the control.
  * <p>
  * @param control the new control
  *
  * @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
  *	when called from the wrong thread
  * @exception SWTError(ERROR_WIDGET_DISPOSED)
  *	when the widget has been disposed
  */
 public void setControl (Control control) {
 	if (control != null && control.getParent() != parent) {
 		SWT.error (SWT.ERROR_INVALID_PARENT);
 	}
 	if (this.control != null && !this.control.isDisposed()) {
 		this.control.setVisible(false);
 	}

 	this.control = control;
 	if (this.control != null) {
 		int index = parent.indexOf (this);
 		if (index == parent.getSelectionIndex ()){
 			this.control.setBounds(parent.getClientArea ());
 			this.control.setVisible(true);
 		} else {
 			this.control.setVisible(false);
 		}
 	}
 }
 /**
  * Sets the image.
  * <p>
  * @param image the new image (or null)
  *
  * @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
  *	when called from the wrong thread
  * @exception SWTError(ERROR_WIDGET_DISPOSED)
  *	when the widget has been disposed
  */
 public void setImage (Image image) {
 	Image oldImage = getImage();

 	super.setImage(image);
 	if (image == null || !image.equals(oldImage)) {
 		parent.itemChanged(this);
 	}
 }
 public void setDisabledImage (Image image) {
 	Image oldImage = getDisabledImage();

 	disabledImage = image;
 	if (disabledImage == null || !disabledImage.equals(oldImage)) {
 		parent.itemChanged(this);
 	}
 }

 /**
  * Set the widget text.
  * <p>
  * This method sets the widget label.  The label may include
  * the mnemonic characters but must not contain line delimiters.
  *
  * @param string the new label for the widget
  *
  */
 public void setText (String string) {
 	String oldText = getText();

 	super.setText(string);
 	if (!string.equals(oldText)) {
 		parent.itemChanged(this);
 	}
 }

 /**
  * Sets the tool tip text.
  * <p>
  * @param string the new tool tip text (or null)
  *
  * @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
  *	when called from the wrong thread
  * @exception SWTError(ERROR_WIDGET_DISPOSED)
  *	when the widget has been disposed
  */
 public void setToolTipText (String string) {
 	toolTipText = string;
 }
 /**
  * Answer the text height.
  */
 private int textHeight(GC gc) {
 	int textHeight = 0;

 	if (isDisposed()) return textHeight;

 	String text = getText();
 	if (text != null) {
 		textHeight = gc.stringExtent(text).y;
 	}
 	return textHeight;
 }
 /**
  * Answer the text width.
  */
 private int textWidth(GC gc) {
 	int textWidth = 0;

 	if (isDisposed()) return 0;

 	String text = getText();
 	if (text != null) {
 		textWidth = gc.stringExtent(text).x;
 	}
 	return textWidth;
 }
 }
	package org.eclipse.swt.custom;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved
	*/

	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.widgets.*;

	public class CTabItem extends Item {
	CTabFolder parent;
	int x,y,width,height = 0;
	String toolTipText;
	Control control; // the tab page

	private Image disabledImage;

	// internal constants
	private static final int LEFT_MARGIN = 3;
	private static final int RIGHT_MARGIN = 3;
	static final int TOP_MARGIN = 2;
	static final int BOTTOM_MARGIN = 2;
	private static final int INTERNAL_SPACING = 2;

	private static final String ellipsis = "...";

	/**
	* Construct a CTabItem with the specified parent and style.
	*/
	public CTabItem (CTabFolder parent, int style) {
	this(parent, style, parent.getItemCount());
	}
	/**
	* Construct a CTabItem with the specified parent and style, inserted at
	* the specified index.
	*/
	public CTabItem (CTabFolder parent, int style, int index) {
	super (parent, checkStyle(style));
	parent.createItem (this, index);
	}
	private static int checkStyle(int style) {
	return SWT.NONE;
	}

	public void dispose () {
	if (isDisposed()) return;
	super.dispose();
	parent.destroyItem(this);
	parent = null;
	control = null;
	toolTipText = null;
	}
	/**
	* Return the bounds of the CTabItem.
	*/
	public Rectangle getBounds () {
	return new Rectangle(x, y, width, height);
	}
	/**
	* Gets the control.
	* <p>
	* @return the control
	*
	* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
	* when called from the wrong thread
	* @exception SWTError(ERROR_WIDGET_DISPOSED)
	* when the widget has been disposed
	*/
	public Control getControl () {
	return control;
	}
	/**
	* Answer the display of the receiver's parent widget.
	*/
	public Display getDisplay() {
	if (parent == null) SWT.error(SWT.ERROR_WIDGET_DISPOSED);
	return parent.getDisplay();
	}
	public Image getDisabledImage(){
	return disabledImage;
	}
	/**
	* Return the parent of the CTabItem.
	*/
	public CTabFolder getParent () {
	return parent;
	}
	/**
	* Gets the tool tip text.
	* <p>
	* @return the tool tip text.
	*
	* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
	* when called from the wrong thread
	* @exception SWTError(ERROR_WIDGET_DISPOSED)
	* when the widget has been disposed
	*/
	public String getToolTipText () {
	return toolTipText;
	}
	private int imageHeight() {
	int imageHeight = 0;
	if (parent.getImageHeight() != -1) {
	imageHeight = parent.getImageHeight();
	} else {
	Image image = getImage();
	if (image != null) {
	imageHeight = image.getBounds().height;
	}
	}
	return imageHeight;
	}
	private int imageWidth() {
	int imageWidth = 0;
	Image image = getImage();
	if (image != null) {
	imageWidth = image.getBounds().width;
	}
	return imageWidth;
	}
	/**
	* Paint the receiver.
	*/
	void onPaint(GC gc, boolean isSelected) {

	if (width == 0 \|\| height == 0) return;

	Display display = getDisplay();
	Color highlightShadow = display.getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW);
	Color normalShadow = display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);

	int index = parent.indexOf(this);

	if (isSelected) {
	// draw a background image behind the text
	if (parent.backgroundImage != null) {
	if (index == parent.topTabIndex){
	Rectangle imageRect = parent.backgroundImage.getBounds();
	gc.drawImage(parent.backgroundImage, 0, 0, imageRect.width, imageRect.height,
	x + 1, y, width - 3, height);
	} else {
	Rectangle imageRect = parent.backgroundImage.getBounds();
	gc.drawImage(parent.backgroundImage, 0, 0, imageRect.width, imageRect.height,
	x + 2, y, width - 4, height);
	}
	}

	// draw tab lines
	if (!parent.onBottom) {
	gc.setForeground(normalShadow);
	if (index != parent.topTabIndex) {
	gc.drawLine(x + 1, y, x + 1, y);
	gc.drawLine(x, y + 1, x, y + height - 2);
	gc.drawLine(x, y + height - 1, x, y + height - 1);
	}
	gc.drawLine(x + width - 2, y, x + width - 2, y);
	gc.drawLine(x + width - 1, y + 1, x + width - 1, y + height - 2);
	gc.drawLine(x + width - 1, y + height - 1, x + width - 1, y + height - 1);

	gc.setForeground(highlightShadow);
	if (index != parent.topTabIndex) {
	gc.drawLine(x + 2, y, x + 2, y);
	gc.drawLine(x + 1, y + 1, x + 1, y + height - 2);
	gc.drawLine(x + 1, y + height - 1, x + 1, y + height - 1);
	} else {
	gc.drawLine(x, y, x, y + height - 1);
	}

	gc.drawLine(x + width - 3, y, x + width - 3, y);
	gc.drawLine(x + width - 2, y + 1, x + width - 2, y + height - 2);
	gc.drawLine(x + width - 2, y + height - 1, x + width - 2, y + height - 1);

	// light line across top
	if (index != parent.topTabIndex) {
	gc.drawLine(x + 3, y, x + width - 4, y);
	} else {
	gc.drawLine(x + 1, y, x + width - 4, y);
	}
	} else {
	gc.setForeground(normalShadow);
	if (index != parent.topTabIndex) {
	gc.drawLine(x, y, x, y);
	gc.drawLine(x, y + 1, x, y + height - 2);
	gc.drawLine(x + 1, y + height - 1, x + 1, y + height - 1);
	}
	gc.drawLine(x + width - 1, y, x + width - 1, y);
	gc.drawLine(x + width - 1, y + 1, x + width - 1, y + height - 2);
	gc.drawLine(x + width - 2, y + height - 1, x + width - 2, y + height - 1);

	gc.setForeground(highlightShadow);
	if (index != parent.topTabIndex) {
	gc.drawLine(x + 1, y, x + 1, y);
	gc.drawLine(x + 1, y + 1, x + 1, y + height - 2);
	gc.drawLine(x + 2, y + height - 1, x + 2, y + height - 1);
	} else {
	gc.drawLine(x, y, x, y + height - 1);
	}

	gc.drawLine(x + width - 2, y, x + width - 2, y);
	gc.drawLine(x + width - 2, y + 1, x + width - 2, y + height - 2);
	gc.drawLine(x + width - 3, y + height - 1, x + width - 3, y + height - 1);

	// light line across top and bottom
	if (index != parent.topTabIndex) {
	gc.drawLine(x + 1, y, x + width - 2, y);
	gc.drawLine(x + 2, y + height - 1, x + width - 4, y + height - 1);
	} else {
	gc.drawLine(x + 1, y, x + width - 2, y);
	gc.drawLine(x + 1, y + height - 1, x + width - 4, y + height - 1);
	}
	}
	}

	// draw Image
	int xDraw = x + LEFT_MARGIN;

	Image image = getImage();
	if (!isSelected && image != null) {
	Image temp = getDisabledImage();
	if (temp != null){
	image = temp;
	}
	}
	if (image != null) {
	Rectangle imageBounds = image.getBounds();
	int imageHeight = imageHeight();
	int imageY = y + (height - parent.getImageHeight()) / 2;
	gc.drawImage(image,
	imageBounds.x, imageBounds.y, imageBounds.width, imageBounds.height,
	xDraw, imageY, imageBounds.width, imageHeight);
	xDraw += imageBounds.width + INTERNAL_SPACING;
	}

	// draw Text
	int textWidth = x + width - xDraw - RIGHT_MARGIN;
	if (isSelected && parent.showClose) {
	textWidth = x + width - xDraw - parent.closeBar.getSize().x - RIGHT_MARGIN;
	}
	String text = shortenText(gc, getText(), textWidth);

	if (isSelected && parent.selectionForeground != null) {
	gc.setForeground(parent.selectionForeground);
	} else {
	gc.setForeground(parent.getForeground());
	}
	int textY = y + (height - textHeight(gc)) / 2;
	gc.drawString(text, xDraw, textY, true);

	gc.setForeground(parent.getForeground());
	}
	private String shortenText(GC gc, String text, int width) {
	if (gc.textExtent(text).x <= width) return text;

	int ellipseWidth = gc.textExtent(ellipsis).x;
	int length = text.length();
	int end = length - 1;
	while (end > 0) {
	text = text.substring(0, end);
	int l1 = gc.textExtent(text).x;
	if (l1 + ellipseWidth <= width) {
	return text + ellipsis;
	}
	end--;
	}
	return "";
	}
	/**
	* Answer the preferred height of the receiver for the GC.
	*/
	int preferredHeight(GC gc) {
	return Math.max(textHeight(gc), imageHeight()) + TOP_MARGIN + BOTTOM_MARGIN;
	}
	/**
	* Answer the preferred width of the receiver for the GC.
	*/
	int preferredWidth(GC gc) {
	int tabWidth = LEFT_MARGIN + RIGHT_MARGIN;
	Image image = getImage();
	if (image != null) tabWidth += imageWidth() + INTERNAL_SPACING;
	tabWidth += textWidth(gc);
	if (parent.showClose) tabWidth += parent.closeBar.getSize().x;
	return tabWidth;
	}
	/**
	* Sets the control.
	* <p>
	* @param control the new control
	*
	* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
	* when called from the wrong thread
	* @exception SWTError(ERROR_WIDGET_DISPOSED)
	* when the widget has been disposed
	*/
	public void setControl (Control control) {
	if (control != null && control.getParent() != parent) {
	SWT.error (SWT.ERROR_INVALID_PARENT);
	}
	if (this.control != null && !this.control.isDisposed()) {
	this.control.setVisible(false);
	}

	this.control = control;
	if (this.control != null) {
	int index = parent.indexOf (this);
	if (index == parent.getSelectionIndex ()){
	this.control.setBounds(parent.getClientArea ());
	this.control.setVisible(true);
	} else {
	this.control.setVisible(false);
	}
	}
	}
	/**
	* Sets the image.
	* <p>
	* @param image the new image (or null)
	*
	* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
	* when called from the wrong thread
	* @exception SWTError(ERROR_WIDGET_DISPOSED)
	* when the widget has been disposed
	*/
	public void setImage (Image image) {
	Image oldImage = getImage();

	super.setImage(image);
	if (image == null \|\| !image.equals(oldImage)) {
	parent.itemChanged(this);
	}
	}
	public void setDisabledImage (Image image) {
	Image oldImage = getDisabledImage();

	disabledImage = image;
	if (disabledImage == null \|\| !disabledImage.equals(oldImage)) {
	parent.itemChanged(this);
	}
	}

	/**
	* Set the widget text.
	* <p>
	* This method sets the widget label. The label may include
	* the mnemonic characters but must not contain line delimiters.
	*
	* @param string the new label for the widget
	*
	*/
	public void setText (String string) {
	String oldText = getText();

	super.setText(string);
	if (!string.equals(oldText)) {
	parent.itemChanged(this);
	}
	}

	/**
	* Sets the tool tip text.
	* <p>
	* @param string the new tool tip text (or null)
	*
	* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
	* when called from the wrong thread
	* @exception SWTError(ERROR_WIDGET_DISPOSED)
	* when the widget has been disposed
	*/
	public void setToolTipText (String string) {
	toolTipText = string;
	}
	/**
	* Answer the text height.
	*/
	private int textHeight(GC gc) {
	int textHeight = 0;

	if (isDisposed()) return textHeight;

	String text = getText();
	if (text != null) {
	textHeight = gc.stringExtent(text).y;
	}
	return textHeight;
	}
	/**
	* Answer the text width.
	*/
	private int textWidth(GC gc) {
	int textWidth = 0;

	if (isDisposed()) return 0;

	String text = getText();
	if (text != null) {
	textWidth = gc.stringExtent(text).x;
	}
	return textWidth;
	}
	}