bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Group.java - platform/eclipse.platform.swt - Git at Google

 package org.eclipse.swt.widgets;

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

 import org.eclipse.swt.*;
 import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.gtk.*;
 import org.eclipse.swt.graphics.*;

 /**
  * Instances of this class provide an etched border
  * with an optional title.
  * <p>
  * Shadow styles are hints and may not be honoured
  * by the platform.  To create a group with the
  * default shadow style for the platform, do not
  * specify a shadow style.
  * <dl>
  * <dt><b>Styles:</b></dt>
  * <dd>SHADOW_ETCHED_IN, SHADOW_ETCHED_OUT, SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd>
  * <dt><b>Events:</b></dt>
  * <dd>(none)</dd>
  * </dl>
  * <p>
  * IMPORTANT: This class is <em>not</em> intended to be subclassed.
  * </p>
  */
 public class Group extends Composite {
 	int frameHandle;
 	String text="";

 /**
  * Constructs a new instance of this class given its parent
  * and a style value describing its behavior and appearance.
  * <p>
  * The style value is either one of the style constants defined in
  * class <code>SWT</code> which is applicable to instances of this
  * class, or must be built by <em>bitwise OR</em>'ing together
  * (that is, using the <code>int</code> "|" operator) two or more
  * of those <code>SWT</code> style constants. The class description
  * for all SWT widget classes should include a comment which
  * describes the style constants which are applicable to the class.
  * </p>
  *
  * @param parent a composite control which will be the parent of the new instance (cannot be null)
  * @param style the style of control to construct
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
  *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
  * </ul>
  *
  * @see SWT
  * @see Widget#checkSubclass
  * @see Widget#getStyle
  */
 public Group (Composite parent, int style) {
 	super (parent, checkStyle (style));
 }
 static int checkStyle (int style) {
 	/*
 	* Even though it is legal to create this widget
 	* with scroll bars, they serve no useful purpose
 	* because they do not automatically scroll the
 	* widget's client area.  The fix is to clear
 	* the SWT style.
 	*/
 	return style & ~(SWT.H_SCROLL | SWT.V_SCROLL);
 }

 void createHandle(int index) {
 	state |= HANDLE;

 	eventBoxHandle = OS.gtk_event_box_new ();
 	if (eventBoxHandle == 0) error (SWT.ERROR_NO_HANDLES);

 	frameHandle = OS.gtk_frame_new(null);
 	if (frameHandle == 0) error (SWT.ERROR_NO_HANDLES);

 	handle = OS.gtk_fixed_new();
 	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
 }

 void _setHandleStyle() {
 	int shadow = OS.GTK_SHADOW_IN;
 	if ((style & SWT.SHADOW_IN) != 0) shadow = OS.GTK_SHADOW_IN;
 	if ((style & SWT.SHADOW_OUT) != 0) shadow = OS.GTK_SHADOW_OUT;
 	if ((style & SWT.SHADOW_ETCHED_IN) != 0) shadow = OS.GTK_SHADOW_ETCHED_IN;
 	if ((style & SWT.SHADOW_ETCHED_OUT) != 0) shadow = OS.GTK_SHADOW_ETCHED_OUT;
 	OS.gtk_frame_set_shadow_type(frameHandle, shadow);
 }

 void configure() {
 	_connectParent();
 	OS.gtk_container_add(eventBoxHandle, frameHandle);
 	OS.gtk_container_add(frameHandle, handle);
 }

 public Point computeSize (int wHint, int hHint, boolean changed) {
 	checkWidget ();
 	int width = _computeSize(wHint, hHint, changed).x;
 	int height = 0;
 	Point size;
 	if (layout != null) {
 		size = layout.computeSize (this, wHint, hHint, changed);
 	} else {
 		size = minimumSize ();
 	}
 	if (size.x == 0) size.x = DEFAULT_WIDTH;
 	if (size.y == 0) size.y = DEFAULT_HEIGHT;
 	if (wHint != SWT.DEFAULT) size.x = wHint;
 	if (hHint != SWT.DEFAULT) size.y = hHint;
 	width = Math.max (width, size.x);
 	height = Math.max (height, size.y);
 	Rectangle trim = computeTrim (0, 0, width, height);
 	width = trim.width;  height = trim.height;
 	return new Point (width, height);
 }

 void showHandle() {
 	OS.gtk_widget_show (eventBoxHandle);
 	OS.gtk_widget_show (frameHandle);
 	OS.gtk_widget_show (handle);
 	OS.gtk_widget_realize (handle);
 }

 void register () {
 	super.register ();
 	WidgetTable.put (frameHandle, this);
 }

 void releaseHandle () {
 	super.releaseHandle ();
 	frameHandle = 0;
 }

 void releaseWidget () {
 	super.releaseWidget ();
 	text = null;
 }

 void deregister () {
 	super.deregister ();
 	WidgetTable.remove (frameHandle);
 }

 int topHandle () { return eventBoxHandle; }
 int parentingHandle() { return handle; }

 /*
  *   ===  GEOMETRY  ===
  */

 public Rectangle _getClientArea () {
 	/*
 	 * The Group coordinates originate at the client area
 	 */
 	int width, height;
 	Point size = _getSize();
 	width = size.x - _getTrim().left - _getTrim().right;
 	height = size.y - _getTrim().top - _getTrim().bottom;
 	return new Rectangle(0,0, width, height);
 }

 Trim _getTrim() {
 	trim = new Trim();

 	// set up the test widgets
 	int testWindowHandle = OS.gtk_window_new(0);
 	int testHandle = OS.gtk_frame_new(string2bytesConvertMnemonic("Test String"));
 	OS.gtk_container_add(testWindowHandle, testHandle);
 	OS.gtk_widget_realize(testHandle);

 	// get info
 	GtkFrame frame = new GtkFrame();
 	OS.memmove (frame, testHandle, GtkFrame.sizeof);
 	GtkStyle groupStyle = new GtkStyle();
 	OS.memmove (groupStyle, frame.style, GtkStyle.sizeof);
 	GtkStyleClass styleClass = new GtkStyleClass();
 	OS.memmove (styleClass, groupStyle.klass, GtkStyleClass.sizeof);

 	// see gtk_frame_size_allocate()
 	trim.left = trim.right = frame.border_width + styleClass.xthickness;
 	trim.top = frame.border_width + Math.max(frame.label_height, styleClass.ythickness);
 	trim.bottom = frame.border_width + styleClass.ythickness;

 	// clean up
 	OS.gtk_widget_destroy(testHandle);
 	OS.gtk_widget_destroy(testWindowHandle);
 	return trim;
 }

 boolean _setSize(int width, int height) {
 	boolean differentExtent = UtilFuncs.setSize (topHandle(), width,height);
 	Point clientSize = UtilFuncs.getSize(frameHandle);
 	// WRONG but it's quite safe - the frame clips it
 	UtilFuncs.setSize (handle, clientSize.x, clientSize.y);
 	return differentExtent;
 }
 /*   =========  Model Logic  =========   */

 String getNameText () {
 	return getText ();
 }
 /**
  * Returns the receiver's text, which is the string that the
  * is used as the <em>title</em>. If the text has not previously
  * been set, returns an empty string.
  *
  * @return the text
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public String getText () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	return text;
 }


 /**
  * Sets the receiver's text, which is the string that will
  * be displayed as the receiver's <em>title</em>, to the argument,
  * which may not be null.
  *
  * @param text the new text
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setText (String string) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	OS.gtk_frame_set_label (frameHandle, string2bytesConvertMnemonic(string));
 	text=string;
 }

 }
	package org.eclipse.swt.widgets;

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

	import org.eclipse.swt.*;
	import org.eclipse.swt.internal.*;
	import org.eclipse.swt.internal.gtk.*;
	import org.eclipse.swt.graphics.*;

	/**
	* Instances of this class provide an etched border
	* with an optional title.
	* <p>
	* Shadow styles are hints and may not be honoured
	* by the platform. To create a group with the
	* default shadow style for the platform, do not
	* specify a shadow style.
	* <dl>
	* <dt><b>Styles:</b></dt>
	* <dd>SHADOW_ETCHED_IN, SHADOW_ETCHED_OUT, SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd>
	* <dt><b>Events:</b></dt>
	* <dd>(none)</dd>
	* </dl>
	* <p>
	* IMPORTANT: This class is <em>not</em> intended to be subclassed.
	* </p>
	*/
	public class Group extends Composite {
	int frameHandle;
	String text="";

	/**
	* Constructs a new instance of this class given its parent
	* and a style value describing its behavior and appearance.
	* <p>
	* The style value is either one of the style constants defined in
	* class <code>SWT</code> which is applicable to instances of this
	* class, or must be built by <em>bitwise OR</em>'ing together
	* (that is, using the <code>int</code> "\|" operator) two or more
	* of those <code>SWT</code> style constants. The class description
	* for all SWT widget classes should include a comment which
	* describes the style constants which are applicable to the class.
	* </p>
	*
	* @param parent a composite control which will be the parent of the new instance (cannot be null)
	* @param style the style of control to construct
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
	* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
	* </ul>
	*
	* @see SWT
	* @see Widget#checkSubclass
	* @see Widget#getStyle
	*/
	public Group (Composite parent, int style) {
	super (parent, checkStyle (style));
	}
	static int checkStyle (int style) {
	/*
	* Even though it is legal to create this widget
	* with scroll bars, they serve no useful purpose
	* because they do not automatically scroll the
	* widget's client area. The fix is to clear
	* the SWT style.
	*/
	return style & ~(SWT.H_SCROLL \| SWT.V_SCROLL);
	}

	void createHandle(int index) {
	state \|= HANDLE;

	eventBoxHandle = OS.gtk_event_box_new ();
	if (eventBoxHandle == 0) error (SWT.ERROR_NO_HANDLES);

	frameHandle = OS.gtk_frame_new(null);
	if (frameHandle == 0) error (SWT.ERROR_NO_HANDLES);

	handle = OS.gtk_fixed_new();
	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
	}

	void _setHandleStyle() {
	int shadow = OS.GTK_SHADOW_IN;
	if ((style & SWT.SHADOW_IN) != 0) shadow = OS.GTK_SHADOW_IN;
	if ((style & SWT.SHADOW_OUT) != 0) shadow = OS.GTK_SHADOW_OUT;
	if ((style & SWT.SHADOW_ETCHED_IN) != 0) shadow = OS.GTK_SHADOW_ETCHED_IN;
	if ((style & SWT.SHADOW_ETCHED_OUT) != 0) shadow = OS.GTK_SHADOW_ETCHED_OUT;
	OS.gtk_frame_set_shadow_type(frameHandle, shadow);
	}

	void configure() {
	_connectParent();
	OS.gtk_container_add(eventBoxHandle, frameHandle);
	OS.gtk_container_add(frameHandle, handle);
	}

	public Point computeSize (int wHint, int hHint, boolean changed) {
	checkWidget ();
	int width = _computeSize(wHint, hHint, changed).x;
	int height = 0;
	Point size;
	if (layout != null) {
	size = layout.computeSize (this, wHint, hHint, changed);
	} else {
	size = minimumSize ();
	}
	if (size.x == 0) size.x = DEFAULT_WIDTH;
	if (size.y == 0) size.y = DEFAULT_HEIGHT;
	if (wHint != SWT.DEFAULT) size.x = wHint;
	if (hHint != SWT.DEFAULT) size.y = hHint;
	width = Math.max (width, size.x);
	height = Math.max (height, size.y);
	Rectangle trim = computeTrim (0, 0, width, height);
	width = trim.width; height = trim.height;
	return new Point (width, height);
	}

	void showHandle() {
	OS.gtk_widget_show (eventBoxHandle);
	OS.gtk_widget_show (frameHandle);
	OS.gtk_widget_show (handle);
	OS.gtk_widget_realize (handle);
	}

	void register () {
	super.register ();
	WidgetTable.put (frameHandle, this);
	}

	void releaseHandle () {
	super.releaseHandle ();
	frameHandle = 0;
	}

	void releaseWidget () {
	super.releaseWidget ();
	text = null;
	}

	void deregister () {
	super.deregister ();
	WidgetTable.remove (frameHandle);
	}

	int topHandle () { return eventBoxHandle; }
	int parentingHandle() { return handle; }

	/*
	* === GEOMETRY ===
	*/

	public Rectangle _getClientArea () {
	/*
	* The Group coordinates originate at the client area
	*/
	int width, height;
	Point size = _getSize();
	width = size.x - _getTrim().left - _getTrim().right;
	height = size.y - _getTrim().top - _getTrim().bottom;
	return new Rectangle(0,0, width, height);
	}

	Trim _getTrim() {
	trim = new Trim();

	// set up the test widgets
	int testWindowHandle = OS.gtk_window_new(0);
	int testHandle = OS.gtk_frame_new(string2bytesConvertMnemonic("Test String"));
	OS.gtk_container_add(testWindowHandle, testHandle);
	OS.gtk_widget_realize(testHandle);

	// get info
	GtkFrame frame = new GtkFrame();
	OS.memmove (frame, testHandle, GtkFrame.sizeof);
	GtkStyle groupStyle = new GtkStyle();
	OS.memmove (groupStyle, frame.style, GtkStyle.sizeof);
	GtkStyleClass styleClass = new GtkStyleClass();
	OS.memmove (styleClass, groupStyle.klass, GtkStyleClass.sizeof);

	// see gtk_frame_size_allocate()
	trim.left = trim.right = frame.border_width + styleClass.xthickness;
	trim.top = frame.border_width + Math.max(frame.label_height, styleClass.ythickness);
	trim.bottom = frame.border_width + styleClass.ythickness;

	// clean up
	OS.gtk_widget_destroy(testHandle);
	OS.gtk_widget_destroy(testWindowHandle);
	return trim;
	}

	boolean _setSize(int width, int height) {
	boolean differentExtent = UtilFuncs.setSize (topHandle(), width,height);
	Point clientSize = UtilFuncs.getSize(frameHandle);
	// WRONG but it's quite safe - the frame clips it
	UtilFuncs.setSize (handle, clientSize.x, clientSize.y);
	return differentExtent;
	}
	/* ========= Model Logic ========= */

	String getNameText () {
	return getText ();
	}
	/**
	* Returns the receiver's text, which is the string that the
	* is used as the <em>title</em>. If the text has not previously
	* been set, returns an empty string.
	*
	* @return the text
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public String getText () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	return text;
	}


	/**
	* Sets the receiver's text, which is the string that will
	* be displayed as the receiver's <em>title</em>, to the argument,
	* which may not be null.
	*
	* @param text the new text
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setText (String string) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	OS.gtk_frame_set_label (frameHandle, string2bytesConvertMnemonic(string));
	text=string;
	}

	}