Mercurial > projects > dwt-mac
view dwt/widgets/ProgressBar.d @ 150:1ec7c20355bd
Fixes #38
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 10 Jun 2009 20:51:17 +0200 |
parents | 63a09873578e |
children |
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/******************************************************************************* * Copyright (c) 2000, 2008 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 * * Port to the D programming language: * Jacob Carlborg <doob@me.com> *******************************************************************************/ module dwt.widgets.ProgressBar; import dwt.dwthelper.utils; import dwt.DWT; import dwt.DWTException; import dwt.graphics.Point; import dwt.internal.cocoa.NSProgressIndicator; import dwt.internal.cocoa.NSRect; import dwt.internal.cocoa.SWTProgressIndicator; import dwt.widgets.Composite; import dwt.widgets.Control; /** * Instances of the receiver represent an unselectable * user interface object that is used to display progress, * typically in the form of a bar. * <dl> * <dt><b>Styles:</b></dt> * <dd>SMOOTH, HORIZONTAL, VERTICAL, INDETERMINATE</dd> * <dt><b>Events:</b></dt> * <dd>(none)</dd> * </dl> * <p> * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified. * </p><p> * IMPORTANT: This class is intended to be subclassed <em>only</em> * within the DWT implementation. * </p> * * @see <a href="http://www.eclipse.org/swt/snippets/#progressbar">ProgressBar snippets</a> * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public class ProgressBar : Control { /** * 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#SMOOTH * @see DWT#HORIZONTAL * @see DWT#VERTICAL * @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; return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0); } public Point computeSize (int wHint, int hHint, bool changed) { checkWidget(); NSProgressIndicator widget = cast(NSProgressIndicator)view; NSRect oldRect = widget.frame(); widget.sizeToFit(); NSRect newRect = widget.frame(); widget.setFrame (oldRect); int size = cast(int)newRect.height; int width = 0, height = 0; if ((style & DWT.HORIZONTAL) !is 0) { height = size; width = height * 10; } else { width = size; height = width * 10; } if (wHint !is DWT.DEFAULT) width = wHint; if (hHint !is DWT.DEFAULT) height = hHint; return new Point (width, height); } void createHandle () { NSProgressIndicator widget = cast(NSProgressIndicator)(new SWTProgressIndicator()).alloc(); widget.initWithFrame(NSRect()); widget.setUsesThreadedAnimation(false); widget.setIndeterminate((style & DWT.INDETERMINATE) !is 0); if ((style & DWT.INDETERMINATE) !is 0) widget.startAnimation(null); view = widget; } /** * Returns the maximum value which the receiver will allow. * * @return the maximum * * @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 getMaximum () { checkWidget(); return cast(int)(cast(NSProgressIndicator)view).maxValue(); } /** * Returns the minimum value which the receiver will allow. * * @return the minimum * * @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 getMinimum () { checkWidget(); return cast(int)(cast(NSProgressIndicator)view).minValue(); } /** * Returns the single 'selection' that is the receiver's position. * * @return the selection * * @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 getSelection () { checkWidget(); return cast(int)(cast(NSProgressIndicator)view).doubleValue(); } /** * Returns the state of the receiver. The value will be one of: * <ul> * <li>{@link DWT#NORMAL}</li> * <li>{@link DWT#ERROR}</li> * <li>{@link DWT#PAUSED}</li> * </ul> * * @return the state * * @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> * * @since 3.4 */ public int getState () { checkWidget (); return DWT.NORMAL; } /** * Sets the maximum value that the receiver will allow. This new * value will be ignored if it is not greater than the receiver's current * minimum value. If the new maximum is applied then the receiver's * selection value will be adjusted if necessary to fall within its new range. * * @param value the new maximum, which must be greater than the current minimum * * @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 setMaximum (int value) { checkWidget(); int minimum = cast(int)(cast(NSProgressIndicator)view).minValue(); if (value <= minimum) return; int selection = cast(int)(cast(NSProgressIndicator)view).doubleValue(); int newSelection = Math.min (selection, value); if (selection !is newSelection) { (cast(NSProgressIndicator)view).setDoubleValue(newSelection); } } /** * Sets the minimum value that the receiver will allow. This new * value will be ignored if it is negative or is not less than the receiver's * current maximum value. If the new minimum is applied then the receiver's * selection value will be adjusted if necessary to fall within its new range. * * @param value the new minimum, which must be nonnegative and less than the current maximum * * @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 setMinimum (int value) { checkWidget(); int maximum = cast(int)(cast(NSProgressIndicator)view).maxValue(); if (!(0 <= value && value < maximum)) return; int selection = cast(int)(cast(NSProgressIndicator)view).doubleValue(); int newSelection = Math.max (selection, value); if (selection !is newSelection) { (cast(NSProgressIndicator)view).setDoubleValue(newSelection); } } /** * Sets the single 'selection' that is the receiver's * position to the argument which must be greater than or equal * to zero. * * @param value the new selection (must be zero or greater) * * @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 setSelection (int value) { checkWidget(); (cast(NSProgressIndicator)view).setDoubleValue(value); } /** * Sets the state of the receiver. The state must be one of these values: * <ul> * <li>{@link DWT#NORMAL}</li> * <li>{@link DWT#ERROR}</li> * <li>{@link DWT#PAUSED}</li> * </ul> * * @param state the new state * * @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> * * @since 3.4 */ public void setState (int state) { checkWidget (); //NOT IMPLEMENTED } }