diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/Group.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/Group.java | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/Group.java b/bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/Group.java new file mode 100644 index 0000000000..b73b440cf7 --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/Group.java @@ -0,0 +1,209 @@ +/******************************************************************************* + * Copyright (c) 2000, 2009 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.swt.widgets; + + +import org.eclipse.swt.SWT; +import org.eclipse.swt.graphics.*; +import org.eclipse.swt.internal.carbon.OS; +import org.eclipse.swt.internal.carbon.CGRect; +import org.eclipse.swt.internal.carbon.Rect; + +/** + * 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> + * Note: Only one of the above styles may be specified. + * </p><p> + * IMPORTANT: This class is <em>not</em> intended to be subclassed. + * </p> + * + * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> + * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> + * @noextend This class is not intended to be subclassed by clients. + */ +public class Group extends Composite { + 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 + * lists the style constants that are applicable to the class. + * Style bits are also inherited from superclasses. + * </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#SHADOW_ETCHED_IN + * @see SWT#SHADOW_ETCHED_OUT + * @see SWT#SHADOW_IN + * @see SWT#SHADOW_OUT + * @see SWT#SHADOW_NONE + * @see Widget#checkSubclass + * @see Widget#getStyle + */ +public Group (Composite parent, int style) { + super (parent, checkStyle (style)); +} + +static int checkStyle (int style) { + style |= SWT.NO_FOCUS; + /* + * 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); +} + +protected void checkSubclass () { + if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); +} + +public Rectangle computeTrim (int x, int y, int width, int height) { + checkWidget (); + CGRect oldBounds = new CGRect (), bounds = oldBounds; + OS.HIViewGetFrame (handle, oldBounds); + int MIN_SIZE = 100; + if (oldBounds.width < MIN_SIZE || oldBounds.height < MIN_SIZE) { + OS.HIViewSetDrawingEnabled (handle, false); + bounds = new CGRect (); + bounds.width = bounds.height = 100; + OS.HIViewSetFrame (handle, bounds); + } + int rgnHandle = OS.NewRgn (); + OS.GetControlRegion (handle, (short)OS.kControlContentMetaPart, rgnHandle); + Rect client = new Rect (); + OS.GetRegionBounds (rgnHandle, client); + OS.DisposeRgn (rgnHandle); + width += (int) bounds.width - (client.right - client.left); + height += (int) bounds.height - (client.bottom - client.top); + if (oldBounds.width < MIN_SIZE || oldBounds.height < MIN_SIZE) { + OS.HIViewSetFrame (handle, oldBounds); + OS.HIViewSetDrawingEnabled (handle, getDrawing ()); + } + return new Rectangle (-client.left, -client.top, width, height); +} + +void createHandle () { + state |= THEME_BACKGROUND; + int [] outControl = new int [1]; + int window = OS.GetControlOwner (parent.handle); + OS.CreateGroupBoxControl (window, null, 0, true, outControl); + if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); + handle = outControl [0]; +} + +void drawBackground (int control, int context) { + fillBackground (control, context, null); +} + +public Rectangle getClientArea () { + checkWidget(); + int rgnHandle = OS.NewRgn (); + OS.GetControlRegion (handle, (short)OS.kControlContentMetaPart, rgnHandle); + Rect client = new Rect (); + OS.GetRegionBounds (rgnHandle, client); + OS.DisposeRgn (rgnHandle); + return new Rectangle (client.left, client.top, client.right - client.left, client.bottom - client.top); +} + +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 () { + checkWidget (); + return text; +} + +float getThemeAlpha () { + return (background != null ? 1 : 0.25f) * parent.getThemeAlpha (); +} + +/** + * 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. The string may include the mnemonic character. + * </p> + * Mnemonics are indicated by an '&' that causes the next + * character to be the mnemonic. When the user presses a + * key sequence that matches the mnemonic, focus is assigned + * to the first child of the group. On most platforms, the + * mnemonic appears underlined but may be emphasised in a + * platform specific manner. The mnemonic indicator character + * '&' can be escaped by doubling it in the string, causing + * a single '&' to be displayed. + * </p> + * @param string the new text + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the text 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); + text = string; + char [] buffer = new char [text.length ()]; + text.getChars (0, buffer.length, buffer, 0); + int length = fixMnemonic (buffer); + int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, length); + if (ptr == 0) error (SWT.ERROR_CANNOT_SET_TEXT); + OS.SetControlTitleWithCFString (handle, ptr); + OS.CFRelease (ptr); +} + +} |