| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.photon.*;
|
| import org.eclipse.swt.*;
|
| 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 {
|
|
|
| /** |
| * 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);
|
| }
|
|
|
| public Point computeSize (int wHint, int hHint, boolean changed) {
|
| checkWidget();
|
| Point titleSize = getTitleSize();
|
| Point size;
|
| if (layout != null) {
|
| size = layout.computeSize (this, wHint, hHint, changed);
|
| } else {
|
| size = minimumSize ();
|
| }
|
| int width = size.x; int height = size.y;
|
| if (width == 0) width = DEFAULT_WIDTH;
|
| if (height == 0) height = DEFAULT_HEIGHT;
|
| if (wHint != SWT.DEFAULT) width = wHint;
|
| if (hHint != SWT.DEFAULT) height = hHint;
|
| Rectangle trim = computeTrim (0, 0, width, height);
|
| width = Math.max (trim.width, titleSize.x + 6);
|
| height = trim.height + titleSize.y;
|
| return new Point (width, height);
|
| }
|
|
|
| protected void checkSubclass () {
|
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
|
| }
|
|
|
| void createHandle (int index) {
|
| state |= HANDLE;
|
| Display display = getDisplay ();
|
| int clazz = display.PtPane;
|
| int parentHandle = parent.handle;
|
| int [] args = {
|
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
|
| };
|
| handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
|
| if (handle == 0) error (SWT.ERROR_NO_HANDLES);
|
| }
|
|
|
| /** |
| * 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 () {
|
| checkWidget();
|
| int [] args = {OS.Pt_ARG_TITLE, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (args [1] == 0) return "";
|
| int length = OS.strlen (args [1]);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, args [1], length);
|
| char [] unicode = Converter.mbcsToWcs (null, buffer);
|
| return new String (unicode);
|
| }
|
|
|
| Point getTitleSize() {
|
| int width = 0, height = 0;
|
| int [] args = {
|
| OS.Pt_ARG_TITLE, 0, 0,
|
| OS.Pt_ARG_TITLE_FONT, 0, 0,
|
| OS.Pt_ARG_CONTAINER_FLAGS, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if ((OS.Pt_ARG_CONTAINER_FLAGS & OS.Pt_SHOW_TITLE) != 0) {
|
| PhRect_t rect = new PhRect_t();
|
| if (args [1] != 0) {
|
| int length = OS.strlen (args [1]);
|
| OS.PfExtentText(rect, null, args [4], args [1], length);
|
| }
|
| int inset = 4;
|
| width = inset + rect.lr_x - rect.ul_x + 1;
|
| height = inset + rect.lr_y - rect.ul_y + 1;
|
| }
|
| return new Point(width, height);
|
| }
|
|
|
| int processPaint (int damage) {
|
| OS.PtSuperClassDraw (OS.PtPane (), handle, damage);
|
| sendPaintEvent (damage);
|
| return OS.Pt_CONTINUE;
|
| }
|
|
|
| /** |
| * 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) {
|
| checkWidget();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| int flags = OS.Pt_SHOW_TITLE | OS.Pt_ETCH_TITLE_AREA | OS.Pt_GRADIENT_TITLE_AREA;
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int ptr = OS.malloc (buffer.length);
|
| OS.memmove (ptr, buffer, buffer.length);
|
| int [] args = {
|
| OS.Pt_ARG_TITLE, ptr, 0,
|
| OS.Pt_ARG_CONTAINER_FLAGS, string.length () == 0 ? 0 : flags, flags,
|
| };
|
| OS.PtSetResources (handle, args.length / 3, args);
|
| OS.free (ptr);
|
| }
|
|
|
| }
|