Mercurial > projects > dwt-mac
view dwt/widgets/Label.d @ 5:1a8b3cb347e0
Fix Ctors to 'this'
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Wed, 27 Aug 2008 14:02:31 +0200 |
parents | 649b8e223d5a |
children | e831403a80a9 |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2000, 2006 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 *******************************************************************************/ module dwt.widgets.Label; import dwt.dwthelper.utils; import dwt.DWT; import dwt.DWTException; import dwt.graphics.Image; import dwt.graphics.Point; import dwt.graphics.Rectangle; import dwt.internal.cocoa.NSAttributedString; import dwt.internal.cocoa.NSBox; import dwt.internal.cocoa.NSCell; import dwt.internal.cocoa.NSColor; import dwt.internal.cocoa.NSImageView; import dwt.internal.cocoa.NSMutableDictionary; import dwt.internal.cocoa.NSRect; import dwt.internal.cocoa.NSString; import dwt.internal.cocoa.NSTextField; import dwt.internal.cocoa.NSTextFieldCell; import dwt.internal.cocoa.OS; import dwt.internal.cocoa.SWTBox; import dwt.internal.cocoa.SWTImageView; import dwt.internal.cocoa.SWTTextField; /** * Instances of this class represent a non-selectable * user interface object that displays a string or image. * When SEPARATOR is specified, displays a single * vertical or horizontal line. * <dl> * <dt><b>Styles:</b></dt> * <dd>SEPARATOR, HORIZONTAL, VERTICAL</dd> * <dd>SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd> * <dd>CENTER, LEFT, RIGHT, WRAP</dd> * <dt><b>Events:</b></dt> * <dd>(none)</dd> * </dl> * <p> * Note: Only one of SHADOW_IN, SHADOW_OUT and SHADOW_NONE may be specified. * SHADOW_NONE is a HINT. Only one of HORIZONTAL and VERTICAL may be specified. * Only one of CENTER, LEFT and RIGHT may be specified. * </p><p> * IMPORTANT: This class is intended to be subclassed <em>only</em> * within the DWT implementation. * </p> */ public class Label : Control { String text = ""; Image image; bool isImage; NSTextField textView; NSImageView imageView; /** * 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>DWT</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>DWT</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 DWTException <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 DWT#SEPARATOR * @see DWT#HORIZONTAL * @see DWT#VERTICAL * @see DWT#SHADOW_IN * @see DWT#SHADOW_OUT * @see DWT#SHADOW_NONE * @see DWT#CENTER * @see DWT#LEFT * @see DWT#RIGHT * @see DWT#WRAP * @see Widget#checkSubclass * @see Widget#getStyle */ public this (Composite parent, int style) { super (parent, checkStyle (style)); } static int checkStyle (int style) { style |= DWT.NO_FOCUS; if ((style & DWT.SEPARATOR) !is 0) { style = checkBits (style, DWT.VERTICAL, DWT.HORIZONTAL, 0, 0, 0, 0); return checkBits (style, DWT.SHADOW_OUT, DWT.SHADOW_IN, DWT.SHADOW_NONE, 0, 0, 0); } return checkBits (style, DWT.LEFT, DWT.CENTER, DWT.RIGHT, 0, 0, 0); } public Point computeSize (int wHint, int hHint, bool changed) { checkWidget(); int width = 0, height = 0; if ((style & DWT.SEPARATOR) !is 0) { if ((style & DWT.HORIZONTAL) !is 0) { width = DEFAULT_WIDTH; height = 3; } else { width = 3; height = DEFAULT_HEIGHT; } } else { if (image !is null && isImage) { Rectangle bounds = image.getBounds(); width = bounds.width; height = bounds.height; } else { NSRect oldRect = textView.frame(); textView.sizeToFit(); NSRect newRect = textView.frame(); textView.setFrame (oldRect); width = (int)newRect.width; height = (int)newRect.height; } } if (wHint !is DWT.DEFAULT) width = wHint; if (hHint !is DWT.DEFAULT) height = hHint; return new Point (width, height); } void createHandle () { SWTBox widget = (SWTBox)new SWTBox().alloc(); widget.initWithFrame(new NSRect()); widget.setTag(jniRef); widget.setTitle(NSString.stringWith("")); if ((style & DWT.SEPARATOR) !is 0) { widget.setBoxType(OS.NSBoxSeparator); } else { widget.setBorderType(OS.NSNoBorder); NSImageView imageWidget = (NSImageView)new SWTImageView().alloc(); imageWidget.initWithFrame(new NSRect()); imageWidget.setTag(jniRef); SWTTextField textWidget = (SWTTextField)new SWTTextField().alloc(); textWidget.initWithFrame(new NSRect()); textWidget.setBordered(false); textWidget.setEditable(false); textWidget.setDrawsBackground(false); textWidget.setTag(jniRef); if ((style & DWT.WRAP) !is 0) { NSTextFieldCell cell = new NSTextFieldCell(textWidget.cell()); cell.setWraps(true); } widget.addSubview_(imageWidget); widget.addSubview_(textWidget); widget.setContentView(textWidget); imageView = imageWidget; textView = textWidget; _setAlignment(); } view = widget; parent.contentView().addSubview_(widget); } NSAttributedString createString() { NSMutableDictionary dict = NSMutableDictionary.dictionaryWithCapacity(4); if (foreground !is null) { NSColor color = NSColor.colorWithDeviceRed(foreground.handle[0], foreground.handle[1], foreground.handle[2], 1); dict.setObject(color, OS.NSForegroundColorAttributeName()); } if (font !is null) { dict.setObject(font.handle, OS.NSFontAttributeName()); } char [] chars = new char [text.length ()]; text.getChars (0, chars.length, chars, 0); int length = fixMnemonic (chars); NSString str = NSString.stringWithCharacters(chars, length); NSAttributedString attribStr = ((NSAttributedString)new NSAttributedString().alloc()).initWithString_attributes_(str, dict); attribStr.autorelease(); return attribStr; } /** * Returns a value which describes the position of the * text or image in the receiver. The value will be one of * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> * unless the receiver is a <code>SEPARATOR</code> label, in * which case, <code>NONE</code> is returned. * * @return the alignment * * @exception DWTException <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 int getAlignment () { checkWidget(); if ((style & DWT.SEPARATOR) !is 0) return DWT.LEFT; if ((style & DWT.CENTER) !is 0) return DWT.CENTER; if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; return DWT.LEFT; } /** * Returns the receiver's image if it has one, or null * if it does not. * * @return the receiver's image * * @exception DWTException <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 Image getImage () { checkWidget(); return image; } String getNameText () { return getText (); } /** * Returns the receiver's text, which will be an empty * string if it has never been set or if the receiver is * a <code>SEPARATOR</code> label. * * @return the receiver's text * * @exception DWTException <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(); if ((style & DWT.SEPARATOR) !is 0) return ""; return text; } /** * Controls how text and images will be displayed in the receiver. * The argument should be one of <code>LEFT</code>, <code>RIGHT</code> * or <code>CENTER</code>. If the receiver is a <code>SEPARATOR</code> * label, the argument is ignored and the alignment is not changed. * * @param alignment the new alignment * * @exception DWTException <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 setAlignment (int alignment) { checkWidget(); if ((style & DWT.SEPARATOR) !is 0) return; if ((alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER)) is 0) return; style &= ~(DWT.LEFT | DWT.RIGHT | DWT.CENTER); style |= alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); _setAlignment(); } void setBackground (float [] color) { if ((style & DWT.SEPARATOR) !is 0) return; textView.setDrawsBackground(color !is null); if (color is null) return; NSColor nsColor = NSColor.colorWithDeviceRed(color[0], color[1], color[2], 1); NSTextFieldCell cell = new NSTextFieldCell(textView.cell()); cell.setBackgroundColor(nsColor); } void _setAlignment() { if ((style & DWT.RIGHT) !is 0) { textView.setAlignment(OS.NSRightTextAlignment); imageView.setImageAlignment(OS.NSImageAlignRight); } if ((style & DWT.LEFT) !is 0) { textView.setAlignment(OS.NSLeftTextAlignment); imageView.setImageAlignment(OS.NSImageAlignLeft); } if ((style & DWT.CENTER) !is 0) { textView.setAlignment(OS.NSCenterTextAlignment); imageView.setImageAlignment(OS.NSImageAlignCenter); } } int setBounds (int x, int y, int width, int height, bool move, bool resize) { int result = super.setBounds(x, y, width, height, move, resize); if ((result & RESIZED) !is 0) { if (imageView !is null || textView !is null) { NSRect rect = view.bounds(); imageView.setFrame(rect); textView.setFrame(rect); } } return result; } void setForeground (float [] color) { if ((style & DWT.SEPARATOR) !is 0) return; NSCell cell = new NSCell(textView.cell()); cell.setAttributedStringValue(createString()); } bool setTabItemFocus () { return false; } /** * Sets the receiver's image to the argument, which may be * null indicating that no image should be displayed. * * @param image the image to display on the receiver (may be null) * * @exception IllegalArgumentException <ul> * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> * </ul> * @exception DWTException <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 setImage (Image image) { checkWidget(); if ((style & DWT.SEPARATOR) !is 0) return; if (image !is null && image.isDisposed ()) { error (DWT.ERROR_INVALID_ARGUMENT); } this.image = image; isImage = true; imageView.setImage(image !is null ? image.handle : null); ((NSBox)view).setContentView(imageView); } /** * Sets the receiver's text. * <p> * This method sets the widget label. The label may include * the mnemonic character and line delimiters. * </p> * <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 control that follows the label. 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 DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT); if ((style & DWT.SEPARATOR) !is 0) return; isImage = false; text = string; NSCell cell = new NSCell(textView.cell()); cell.setAttributedStringValue(createString()); ((NSBox)view).setContentView(textView); } }