| /******************************************************************************* |
| * 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.carbon.OS; |
| import org.eclipse.swt.internal.carbon.Rect; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of the receiver represent a selectable user interface object |
| * that allows the user to drag a rubber banded outline of the sash within |
| * the parent control. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>HORIZONTAL, VERTICAL</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</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 Sash extends Control { |
| Cursor sizeCursor; |
| |
| /** |
| * 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#HORIZONTAL |
| * @see SWT#VERTICAL |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Sash (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| int cursorStyle = (style & SWT.VERTICAL) != 0 ? SWT.CURSOR_SIZEWE : SWT.CURSOR_SIZENS; |
| sizeCursor = new Cursor (display, cursorStyle); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the control is selected, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the x, y, width, and height fields of the event object are valid. |
| * If the reciever is being dragged, the event object detail field contains the value <code>SWT.DRAG</code>. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * |
| * @param listener the listener which should be notified |
| * |
| * @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> |
| * |
| * @see SelectionListener |
| * @see #removeSelectionListener |
| * @see SelectionEvent |
| */ |
| public void addSelectionListener(SelectionListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener(listener); |
| addListener(SWT.Selection,typedListener); |
| addListener(SWT.DefaultSelection,typedListener); |
| } |
| |
| static int checkStyle (int style) { |
| return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| int width = 0, height = 0; |
| if ((style & SWT.HORIZONTAL) != 0) { |
| width += DEFAULT_WIDTH; height += 5; |
| } else { |
| width += 5; height += DEFAULT_HEIGHT; |
| } |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point (width, height); |
| } |
| |
| void createHandle () { |
| int features = OS.kControlSupportsEmbedding | OS.kControlSupportsFocus | OS.kControlGetsFocusOnClick; |
| int [] outControl = new int [1]; |
| int window = OS.GetControlOwner (parent.handle); |
| OS.CreateUserPaneControl (window, null, features, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| } |
| |
| void drawBackground (int control) { |
| drawBackground (control, background); |
| } |
| |
| int kEventControlClick (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventControlClick (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| if (!isEnabled ()) return OS.noErr; |
| return result; |
| } |
| |
| int kEventControlSetCursor (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventControlSetCursor (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| display.setCursor (sizeCursor.handle); |
| return OS.noErr; |
| } |
| |
| int kEventMouseDown (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventMouseDown (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| |
| Rect rect = new Rect (); |
| OS.GetControlBounds (handle, rect); |
| int startX = rect.left; |
| int startY = rect.top; |
| int width = rect.right - rect.left; |
| int height = rect.bottom - rect.top; |
| OS.GetControlBounds (parent.handle, rect); |
| Event event = new Event (); |
| event.x = startX -= rect.left; |
| event.y = startY -= rect.top; |
| event.width = width; |
| event.height = height; |
| sendEvent (SWT.Selection, event); |
| if (isDisposed ()) return result; |
| if (!event.doit) return result; |
| |
| int sizeof = org.eclipse.swt.internal.carbon.Point.sizeof; |
| org.eclipse.swt.internal.carbon.Point pt = new org.eclipse.swt.internal.carbon.Point (); |
| OS.GetEventParameter (theEvent, OS.kEventParamMouseLocation, OS.typeQDPoint, null, sizeof, null, pt); |
| int window = OS.GetControlOwner (handle); |
| OS.GetWindowBounds (window, (short) OS.kWindowContentRgn, rect); |
| int offsetX = pt.h - rect.left; |
| int offsetY = pt.v - rect.top; |
| OS.GetControlBounds (handle, rect); |
| offsetX -= rect.left; |
| offsetY -= rect.top; |
| |
| int port = OS.GetWindowPort (window); |
| int [] outModifiers = new int [1]; |
| short [] outResult = new short [1]; |
| org.eclipse.swt.internal.carbon.Point outPt = new org.eclipse.swt.internal.carbon.Point (); |
| while (outResult [0] != OS.kMouseTrackingMouseUp) { |
| OS.TrackMouseLocationWithOptions (port, 0, OS.kEventDurationForever, outPt, outModifiers, outResult); |
| switch (outResult [0]) { |
| case OS.kMouseTrackingMouseDown: |
| case OS.kMouseTrackingMouseUp: |
| case OS.kMouseTrackingMouseDragged: { |
| OS.GetControlBounds (parent.handle, rect); |
| int x = outPt.h - rect.left; |
| int y = outPt.v - rect.top; |
| int newX = startX, newY = startY; |
| if ((style & SWT.VERTICAL) != 0) { |
| int clientWidth = rect.right - rect.left; |
| newX = Math.min (Math.max (0, x - offsetX), clientWidth - width); |
| } else { |
| int clientHeight = rect.bottom - rect.top; |
| newY = Math.min (Math.max (0, y - offsetY), clientHeight - height); |
| } |
| event = new Event (); |
| event.x = newX; |
| event.y = newY; |
| event.width = width; |
| event.height = height; |
| event.detail = 0; //outResult [0] == OS.kMouseTrackingMouseDragged ? SWT.DRAG : 0; |
| sendEvent (SWT.Selection, event); |
| if (isDisposed ()) return result; |
| if (event.doit) { |
| setBounds (newX, newY, width, height); |
| Shell shell = parent.getShell (); |
| shell.update (true); |
| } |
| break; |
| } |
| default: |
| outResult [0] = OS.kMouseTrackingMouseUp; |
| break; |
| } |
| } |
| return result; |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (sizeCursor != null) sizeCursor.dispose (); |
| sizeCursor = null; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected. |
| * |
| * @param listener the listener which should be notified |
| * |
| * @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> |
| * |
| * @see SelectionListener |
| * @see #addSelectionListener |
| */ |
| public void removeSelectionListener(SelectionListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook(SWT.Selection, listener); |
| eventTable.unhook(SWT.DefaultSelection,listener); |
| } |
| |
| int traversalCode (int key, int theEvent) { |
| return 0; |
| } |
| |
| } |