| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.photon.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of the receiver represent is 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 SWT implementation. |
| * </p> |
| */ |
| public class ProgressBar extends 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>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#SMOOTH |
| * @see SWT#HORIZONTAL |
| * @see SWT#VERTICAL |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public ProgressBar (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0); |
| } |
| |
| /* |
| * Not done - check Windows |
| */ |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| int width = wHint, height = hHint; |
| if ((style & SWT.HORIZONTAL) != 0) { |
| if (width == SWT.DEFAULT) { |
| width = 64; |
| // width = getMaximum() - getMinimum() + 1; |
| } |
| if (height == SWT.DEFAULT) height = 15; |
| } else { |
| if (height == SWT.DEFAULT) { |
| height = 64; |
| // height = getMaximum() - getMinimum() + 1; |
| } |
| if (width == SWT.DEFAULT) width = 15; |
| } |
| PhRect_t rect = new PhRect_t (); |
| PhArea_t area = new PhArea_t (); |
| rect.lr_x = (short) (width - 1); |
| rect.lr_y = (short) (height - 1); |
| OS.PtSetAreaFromWidgetCanvas (handle, rect, area); |
| width = area.size_w; |
| height = area.size_h; |
| return new Point (width, height); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| Display display = getDisplay (); |
| int clazz = display.PtProgress; |
| int parentHandle = parent.parentingHandle (); |
| int gaugeFlags = (style & SWT.INDETERMINATE) != 0 ? OS.Pt_GAUGE_INDETERMINATE : 0; |
| int [] args = { |
| OS.Pt_ARG_FLAGS, 0, OS.Pt_GETS_FOCUS, |
| OS.Pt_ARG_GAUGE_FLAGS, gaugeFlags, OS.Pt_GAUGE_INDETERMINATE, |
| OS.Pt_ARG_ORIENTATION, (style & SWT.HORIZONTAL) != 0 ? OS.Pt_HORIZONTAL : OS.Pt_VERTICAL, 0, |
| 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); |
| } |
| |
| byte [] defaultFont () { |
| Display display = getDisplay (); |
| return display.GAUGE_FONT; |
| } |
| |
| /** |
| * Returns the maximum value which the receiver will allow. |
| * |
| * @return the maximum |
| * |
| * @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 int getMaximum () { |
| checkWidget(); |
| int [] args = {OS.Pt_ARG_MAXIMUM, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| return args [1]; |
| } |
| |
| /** |
| * Returns the minimum value which the receiver will allow. |
| * |
| * @return the minimum |
| * |
| * @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 int getMinimum () { |
| checkWidget(); |
| int [] args = {OS.Pt_ARG_MINIMUM, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| return args [1]; |
| } |
| |
| /** |
| * Returns the single <em>selection</em> that is the receiver's position. |
| * |
| * @return the selection |
| * |
| * @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 int getSelection () { |
| checkWidget(); |
| int [] args = {OS.Pt_ARG_GAUGE_VALUE, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| return args [1]; |
| } |
| |
| /** |
| * Sets the maximum value which the receiver will allow |
| * to be the argument which must be greater than or |
| * equal to zero. |
| * |
| * @param value the new maximum (must be zero or greater) |
| * |
| * @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 setMaximum (int value) { |
| checkWidget(); |
| int minimum = getMinimum(); |
| if (0 <= minimum && minimum < value) { |
| OS.PtSetResource (handle, OS.Pt_ARG_MAXIMUM, value, 0); |
| } |
| } |
| |
| /** |
| * Sets the minimum value which the receiver will allow |
| * to be the argument which must be greater than or |
| * equal to zero. |
| * |
| * @param value the new minimum (must be zero or greater) |
| * |
| * @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 setMinimum (int value) { |
| checkWidget(); |
| int maximum = getMaximum(); |
| if (0 <= value && value < maximum) { |
| OS.PtSetResource (handle, OS.Pt_ARG_MINIMUM, value, 0); |
| } |
| } |
| |
| /** |
| * Sets the single <em>selection</em> 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 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 setSelection (int value) { |
| checkWidget(); |
| OS.PtSetResource (handle, OS.Pt_ARG_GAUGE_VALUE, value, 0); |
| } |
| |
| int traversalCode (int key_sym, PhKeyEvent_t ke) { |
| return 0; |
| } |
| |
| int widgetClass () { |
| return OS.PtProgress (); |
| } |
| |
| } |