Mercurial > projects > dwt-mac
view dwt/widgets/Sash.d @ 7:e831403a80a9
Add 'cast' to casts
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 14:30:35 +0200 |
parents | 1a8b3cb347e0 |
children | d8635bb48c7c |
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/******************************************************************************* * Copyright (c) 2000, 2007 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.Sash; import dwt.dwthelper.utils; import dwt.DWT; import dwt.DWTException; import dwt.events.SelectionEvent; import dwt.events.SelectionListener; import dwt.graphics.Cursor; import dwt.graphics.Point; import dwt.graphics.Rectangle; import dwt.internal.cocoa.NSEvent; import dwt.internal.cocoa.NSPoint; import dwt.internal.cocoa.NSRect; import dwt.internal.cocoa.OS; import dwt.internal.cocoa.SWTView; /** * 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, SMOOTH</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 DWT implementation. * </p> */ public class Sash : Control { Cursor sizeCursor; bool dragging; int lastX, lastY, startX, startY; private final static int INCREMENT = 1; private final static int PAGE_INCREMENT = 9; /** * 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#HORIZONTAL * @see DWT#VERTICAL * @see Widget#checkSubclass * @see Widget#getStyle */ public this (Composite parent, int style) { super (parent, checkStyle (style)); int cursorStyle = (style & DWT.VERTICAL) !is 0 ? DWT.CURSOR_SIZEWE : DWT.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 the user, 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 receiver is being dragged, the event object detail field contains the value <code>DWT.DRAG</code>. * <code>widgetDefaultSelected</code> is not called. * </p> * * @param listener the listener which should be notified when the control is selected by the user * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener 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> * * @see SelectionListener * @see #removeSelectionListener * @see SelectionEvent */ public void addSelectionListener(SelectionListener listener) { checkWidget(); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener(listener); addListener(DWT.Selection,typedListener); addListener(DWT.DefaultSelection,typedListener); } static int checkStyle (int style) { /* * Macintosh only supports smooth dragging. */ style |= DWT.SMOOTH; return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0); } bool becomeFirstResponder () { bool result = super.becomeFirstResponder(); NSRect frame = view.frame(); lastX = cast(int)frame.x; lastY = cast(int)frame.y; return result; } public Point computeSize (int wHint, int hHint, bool changed) { checkWidget(); int width = 0, height = 0; if ((style & DWT.HORIZONTAL) !is 0) { width += DEFAULT_WIDTH; height += 5; } else { width += 5; height += DEFAULT_HEIGHT; } if (wHint !is DWT.DEFAULT) width = wHint; if (hHint !is DWT.DEFAULT) height = hHint; return new Point (width, height); } void createHandle () { SWTView widget = cast(SWTView)new SWTView().alloc(); widget.initWithFrame (new NSRect()); widget.setTag(jniRef); view = widget; parent.contentView().addSubview_(view); } bool sendKeyEvent(NSEvent nsEvent, int type) { //TODO consumed int keyCode = nsEvent.keyCode(); switch (keyCode) { case 126: /* Up arrow */ case 123: /* Left arrow */ case 125: /* Down arrow */ case 124: /* Right arrow */ { int xChange = 0, yChange = 0; int stepSize = PAGE_INCREMENT; int modifiers = nsEvent.modifierFlags(); if ((modifiers & OS.NSControlKeyMask) !is 0) stepSize = INCREMENT; if ((style & DWT.VERTICAL) !is 0) { if (keyCode is 126 || keyCode is 125) break; xChange = keyCode is 123 ? -stepSize : stepSize; } else { if (keyCode is 123 || keyCode is 124) break; yChange = keyCode is 126 ? -stepSize : stepSize; } Rectangle bounds = getBounds (); int width = bounds.width, height = bounds.height; Rectangle parentBounds = parent.getBounds (); int parentWidth = parentBounds.width; int parentHeight = parentBounds.height; int newX = lastX, newY = lastY; if ((style & DWT.VERTICAL) !is 0) { newX = Math.min (Math.max (0, lastX + xChange), parentWidth - width); } else { newY = Math.min (Math.max (0, lastY + yChange), parentHeight - height); } if (newX is lastX && newY is lastY) return true; Event event = new Event (); event.x = newX; event.y = newY; event.width = width; event.height = height; sendEvent (DWT.Selection, event); if (isDisposed ()) break; if (event.doit) { setBounds (event.x, event.y, width, height); if (isDisposed ()) break; lastX = event.x; lastY = event.y; if (isDisposed ()) return false; int cursorX = event.x, cursorY = event.y; if ((style & DWT.VERTICAL) !is 0) { cursorY += height / 2; } else { cursorX += width / 2; } display.setCursorLocation (parent.toDisplay (cursorX, cursorY)); } break; } } return true; } void mouseDown(int theEvent) { super.mouseDown(theEvent); NSEvent nsEvent = new NSEvent(theEvent); if (nsEvent.clickCount() !is 1) return; NSPoint location = nsEvent.locationInWindow(); NSPoint point = view.convertPoint_fromView_(location, null); startX = cast(int)point.x; startY = cast(int)point.y; NSRect frame = view.frame(); Event event = new Event (); event.x = cast(int)frame.x; event.y = cast(int)frame.y; event.width = cast(int)frame.width; event.height = cast(int)frame.height; sendEvent (DWT.Selection, event); if (isDisposed ()) return; if (event.doit) { lastX = event.x; lastY = event.y; dragging = true; setLocation(event.x, event.y); } } void mouseDragged(int theEvent) { super.mouseDragged(theEvent); if (!dragging) return; NSEvent nsEvent = new NSEvent(theEvent); NSPoint location = nsEvent.locationInWindow(); NSPoint point = view.convertPoint_fromView_(location, null); NSRect frame = view.frame(); NSRect parentFrame = parent.topView().frame(); int newX = lastX, newY = lastY; if ((style & DWT.VERTICAL) !is 0) { newX = Math.min (Math.max (0, cast(int)(point.x + frame.x - startX)), cast(int)(parentFrame.width - frame.width)); } else { newY = Math.min (Math.max (0, cast(int)(point.y + frame.y - startY)), cast(int)(parentFrame.height - frame.height)); } if (newX is lastX && newY is lastY) return; Event event = new Event (); event.x = newX; event.y = newY; event.width = cast(int)frame.width; event.height = cast(int)frame.height; sendEvent (DWT.Selection, event); if (isDisposed ()) return; if (event.doit) { lastX = event.x; lastY = event.y; setBounds (event.x, event.y, cast(int)frame.width, cast(int)frame.height); } } void mouseEntered(int theEvent) { //TODO need to add tracking area super.mouseEntered(theEvent); sizeCursor.handle.set(); } void mouseUp(int theEvent) { super.mouseUp(theEvent); if (!dragging) return; dragging = false; NSRect frame = view.frame(); Event event = new Event (); event.x = lastX; event.y = lastY; event.width = cast(int)frame.width; event.height = cast(int)frame.height; sendEvent (DWT.Selection, event); if (isDisposed ()) return; if (event.doit) { setBounds (event.x, event.y, cast(int)frame.width, cast(int)frame.height); } } void releaseWidget () { super.releaseWidget (); if (sizeCursor !is null) sizeCursor.dispose (); sizeCursor = null; } /** * Removes the listener from the collection of listeners who will * be notified when the control is selected by the user. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener 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> * * @see SelectionListener * @see #addSelectionListener */ public void removeSelectionListener(SelectionListener listener) { checkWidget(); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook(DWT.Selection, listener); eventTable.unhook(DWT.DefaultSelection,listener); } int traversalCode (int key, NSEvent theEvent) { return 0; } }