projects/dwt-mac: dwt/dnd/TableDropTargetEffect.d annotate

annotate dwt/dnd/TableDropTargetEffect.d @ 109:23a31de4a3ab

Ported dwt.dnd.TableDropTargetEffect

author	Jacob Carlborg <doob@me.com>
date	Wed, 31 Dec 2008 14:57:48 +0100
parents	d8635bb48c7c
children

rev	line source
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	1 /*******************************************************************************
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	2 * Copyright (c) 2000, 2008 IBM Corporation and others.
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	3 * All rights reserved. This program and the accompanying materials
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	4 * are made available under the terms of the Eclipse Public License v1.0
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	5 * which accompanies this distribution, and is available at
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	6 * http://www.eclipse.org/legal/epl-v10.html
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	7 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	8 * Contributors:
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	9 * IBM Corporation - initial API and implementation
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	10 *
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	11 * Port to the D programming language:
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	12 * Jacob Carlborg <doob@me.com>
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	13 *******************************************************************************/
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	14 module dwt.dnd.TableDropTargetEffect;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	15
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	16 import dwt.dwthelper.utils;
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	17
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	18 import dwt.graphics.Point;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	19 import dwt.graphics.Rectangle;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	20 import dwt.widgets.Table;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	21 import dwt.widgets.TableItem;
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	22
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	23 import dwt.dnd.DND;
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	24 import dwt.dnd.DropTarget;
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	25 import dwt.dnd.DropTargetEffect;
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	26 import dwt.dnd.DropTargetEvent;
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	27
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	28 /**
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	29 * This class provides a default drag under effect (eg. select, insert and scroll)
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	30 * when a drag occurs over a <code>Table</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	31 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	32 * <p>Classes that wish to provide their own drag under effect for a <code>Table</code>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	33 * can extend the <code>TableDropTargetEffect</code> and override any applicable methods
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	34 * in <code>TableDropTargetEffect</code> to display their own drag under effect.</p>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	35 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	36 * Subclasses that override any methods of this class must call the corresponding
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	37 * <code>super</code> method to get the default drag under effect implementation.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	38 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	39 * <p>The feedback value is either one of the FEEDBACK constants defined in
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	40 * class <code>DND</code> which is applicable to instances of this class,
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	41 * or it must be built by <em>bitwise OR</em>'ing together
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	42 * (that is, using the <code>int</code> "\|" operator) two or more
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	43 * of those <code>DND</code> effect constants.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	44 * </p>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	45 * <p>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	46 * <dl>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	47 * <dt><b>Feedback:</b></dt>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	48 * <dd>FEEDBACK_SELECT, FEEDBACK_SCROLL</dd>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	49 * </dl>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	50 * </p>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	51 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	52 * @see DropTargetAdapter
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	53 * @see DropTargetEvent
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	54 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	55 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	56 * @since 3.3
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	57 */
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	58 public class TableDropTargetEffect : DropTargetEffect {
23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	59 static const int SCROLL_HYSTERESIS = 150; // milli seconds
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	60
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	61 TableItem scrollItem;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	62 long scrollBeginTime;
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	63 // DataBrowserCallbacks callbacks = null;
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	64
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	65 // static Callback AcceptDragProc;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	66 // static {
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	67 // AcceptDragProc = new Callback(TableDropTargetEffect.class, "AcceptDragProc", 5); //$NON-NLS-1$
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	68 // int acceptDragProc = AcceptDragProc.getAddress();
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	69 // if (acceptDragProc is 0) DWT.error(DWT.ERROR_NO_MORE_CALLBACKS);
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	70 // }
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	71
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	72 // static int AcceptDragProc(int theControl, int itemID, int property, int theRect, int theDrag) {
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	73 // DropTarget target = FindDropTarget(theControl, theDrag);
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	74 // if (target is null) return 0;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	75 // return (target.feedback & DND.FEEDBACK_SELECT) !is 0 ? 1 : 0;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	76 // }
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	77
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	78 // static DropTarget FindDropTarget(int theControl, int theDrag) {
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	79 // if (theControl is 0) return null;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	80 // Display display = Display.findDisplay(Thread.currentThread());
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	81 // if (display is null \|\| display.isDisposed()) return null;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	82 // Widget widget = display.findWidget(theControl);
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	83 // if (widget is null) return null;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	84 // return (DropTarget)widget.getData(DND.DROP_TARGET_KEY);
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	85 // }
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	86
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	87 /**
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	88 * Creates a new <code>TableDropTargetEffect</code> to handle the drag under effect on the specified
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	89 * <code>Table</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	90 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	91 * @param table the <code>Table</code> over which the user positions the cursor to drop the data
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	92 */
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	93 public this(Table table) {
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	94 super(table);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	95 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	96
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	97 int checkEffect(int effect) {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	98 // Some effects are mutually exclusive. Make sure that only one of the mutually exclusive effects has been specified.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	99 if ((effect & DND.FEEDBACK_SELECT) !is 0) effect = effect & ~DND.FEEDBACK_INSERT_AFTER & ~DND.FEEDBACK_INSERT_BEFORE;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	100 if ((effect & DND.FEEDBACK_INSERT_BEFORE) !is 0) effect = effect & ~DND.FEEDBACK_INSERT_AFTER;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	101 return effect;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	102 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	103
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	104 /**
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	105 * This implementation of <code>dragEnter</code> provides a default drag under effect
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	106 * for the feedback specified in <code>event.feedback</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	107 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	108 * For additional information see <code>DropTargetAdapter.dragEnter</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	109 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	110 * Subclasses that override this method should call <code>super.dragEnter(event)</code>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	111 * to get the default drag under effect implementation.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	112 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	113 * @param event the information associated with the drag enter event
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	114 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	115 * @see DropTargetAdapter
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	116 * @see DropTargetEvent
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	117 */
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	118 public void dragEnter(DropTargetEvent event) {
45 d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	119 // if (callbacks is null) {
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	120 // Table table = (Table) control;
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	121 // DataBrowserCallbacks callbacks = new DataBrowserCallbacks ();
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	122 // OS.GetDataBrowserCallbacks (table.handle, callbacks);
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	123 // callbacks.v1_acceptDragCallback = AcceptDragProc.getAddress();
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	124 // OS.SetDataBrowserCallbacks(table.handle, callbacks);
d8635bb48c7c Merge with SWT 3.5 Jacob Carlborg <doob@me.com> parents: 7 diff changeset	125 // }
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	126 scrollBeginTime = 0;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	127 scrollItem = null;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	128 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	129
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	130 /**
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	131 * This implementation of <code>dragLeave</code> provides a default drag under effect
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	132 * for the feedback specified in <code>event.feedback</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	133 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	134 * For additional information see <code>DropTargetAdapter.dragLeave</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	135 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	136 * Subclasses that override this method should call <code>super.dragLeave(event)</code>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	137 * to get the default drag under effect implementation.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	138 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	139 * @param event the information associated with the drag leave event
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	140 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	141 * @see DropTargetAdapter
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	142 * @see DropTargetEvent
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	143 */
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	144 public void dragLeave(DropTargetEvent event) {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	145 scrollBeginTime = 0;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	146 scrollItem = null;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	147 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	148
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	149 /**
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	150 * This implementation of <code>dragOver</code> provides a default drag under effect
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	151 * for the feedback specified in <code>event.feedback</code>. The class description
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	152 * lists the FEEDBACK constants that are applicable to the class.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	153 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	154 * For additional information see <code>DropTargetAdapter.dragOver</code>.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	155 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	156 * Subclasses that override this method should call <code>super.dragOver(event)</code>
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	157 * to get the default drag under effect implementation.
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	158 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	159 * @param event the information associated with the drag over event
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	160 *
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	161 * @see DropTargetAdapter
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	162 * @see DropTargetEvent
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	163 * @see DND#FEEDBACK_SELECT
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	164 * @see DND#FEEDBACK_SCROLL
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	165 */
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	166 public void dragOver(DropTargetEvent event) {
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	167 Table table = cast(Table) control;
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	168 int effect = checkEffect(event.feedback);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	169
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	170 TableItem item = cast(TableItem)getItem(table, event.x, event.y);
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	171
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	172 if ((effect & DND.FEEDBACK_SCROLL) is 0) {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	173 scrollBeginTime = 0;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	174 scrollItem = null;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	175 } else {
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	176 if (item !is null && item.opEquals(scrollItem) && scrollBeginTime !is 0) {
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	177 if (System.currentTimeMillis() >= scrollBeginTime) {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	178 Rectangle area = table.getClientArea();
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	179 int headerHeight = table.getHeaderHeight();
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	180 int itemHeight= table.getItemHeight();
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	181 Point pt = new Point(event.x, event.y);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	182 pt = table.getDisplay().map(null, table, pt);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	183 TableItem nextItem = null;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	184 if (pt.y < area.y + headerHeight + 2 * itemHeight) {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	185 int index = Math.max(0, table.indexOf(item)-1);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	186 nextItem = table.getItem(index);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	187 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	188 if (pt.y > area.y + area.height - 2 * itemHeight) {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	189 int index = Math.min(table.getItemCount()-1, table.indexOf(item)+1);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	190 nextItem = table.getItem(index);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	191 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	192 if (nextItem !is null) table.showItem(nextItem);
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	193 scrollBeginTime = 0;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	194 scrollItem = null;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	195 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	196 } else {
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	197 scrollBeginTime = System.currentTimeMillis() + SCROLL_HYSTERESIS;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	198 scrollItem = item;
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	199 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	200 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	201
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	202 // store current effect for selection feedback
109 23a31de4a3ab Ported dwt.dnd.TableDropTargetEffect Jacob Carlborg <doob@me.com> parents: 45 diff changeset	203 (cast(DropTarget)event.widget).feedback = effect;
0 380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	204 }
380af2bdd8e5 Upload of whole dwt tree Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> parents: diff changeset	205 }

Mercurial > projects > dwt-mac

annotate dwt/dnd/TableDropTargetEffect.d @ 109:23a31de4a3ab