| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.editpolicies; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.draw2d.ColorConstants; |
| import org.eclipse.draw2d.Graphics; |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.draw2d.Locator; |
| import org.eclipse.draw2d.PositionConstants; |
| import org.eclipse.draw2d.geometry.Dimension; |
| import org.eclipse.draw2d.geometry.Point; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| import org.eclipse.gef.DragTracker; |
| import org.eclipse.gef.GraphicalEditPart; |
| import org.eclipse.gef.Handle; |
| import org.eclipse.gef.SharedCursors; |
| import org.eclipse.gef.handles.MoveHandle; |
| import org.eclipse.gef.handles.ResizeHandle; |
| import org.eclipse.gef.handles.SquareHandle; |
| import org.eclipse.gef.tools.DragEditPartsTracker; |
| import org.eclipse.gef.tools.SelectEditPartTracker; |
| import org.eclipse.jst.pagedesigner.PDPlugin; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Cursor; |
| import org.eclipse.swt.graphics.Image; |
| import org.w3c.dom.Element; |
| |
| /** |
| * @author mengbo |
| */ |
| public class ColumnResizableEditPolicy extends ElementResizableEditPolicy { |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.editpolicies.ResizableEditPolicy#createSelectionHandles() |
| */ |
| protected List createSelectionHandles() { |
| String elementName = ((Element) getHost().getModel()).getLocalName(); |
| if ("column".equalsIgnoreCase(elementName)) { |
| List list = new ArrayList(); |
| |
| GraphicalEditPart part = (GraphicalEditPart) getHost(); |
| |
| { |
| MoveHandle borderhandle = new MoveHandle(part, new ColumnBorderHandleLocator( |
| part)); |
| list.add(borderhandle); |
| } |
| |
| { |
| MyMoveHandle cornerHandle = new MyMoveHandle(part, new ColumnHandleLocator(part, getHostFigure(), |
| PositionConstants.NORTH_WEST)); |
| list.add(cornerHandle); |
| } |
| |
| SelectEditPartTracker tracker = new SelectEditPartTracker(getHost()); |
| list.add(createHandle(part, PositionConstants.SOUTH_EAST, tracker, |
| SharedCursors.ARROW)); |
| list.add(createHandle(part, PositionConstants.SOUTH_WEST, tracker, |
| SharedCursors.ARROW)); |
| list.add(createHandle(part, PositionConstants.NORTH_WEST, tracker, |
| SharedCursors.ARROW)); |
| list.add(createHandle(part, PositionConstants.NORTH_EAST, tracker, |
| SharedCursors.ARROW)); |
| return list; |
| |
| } |
| return super.createSelectionHandles(); |
| } |
| |
| private Handle createHandle(GraphicalEditPart owner, int direction, |
| DragTracker tracker, Cursor cursor) { |
| ResizeHandle handle = new ResizeHandle(owner, new ColumnCornerLocator( |
| owner, direction), cursor); |
| handle.setCursor(cursor); |
| handle.setDragTracker(tracker); |
| return handle; |
| } |
| |
| private class ColumnHandleLocator extends CornerRelativeHandleLocator { |
| private GraphicalEditPart editPart; |
| |
| /** |
| * @param editPart |
| * @param reference |
| * @param location |
| */ |
| public ColumnHandleLocator(GraphicalEditPart editPart, IFigure reference, int location) { |
| super(reference, location); |
| this.editPart = editPart; |
| } |
| |
| protected Dimension getNewTargetSize(IFigure relocateFigure) { |
| return relocateFigure.getPreferredSize(); |
| } |
| |
| protected Rectangle getCurrentTargetBounds(IFigure relocateFigure) { |
| return ColumnHelper.getColumnBounds(editPart, relocateFigure); |
| } |
| } |
| |
| private class ColumnCornerLocator implements Locator { |
| private double relativeX; |
| |
| private double relativeY; |
| |
| private GraphicalEditPart editPart; |
| |
| /** |
| * Constructs a RelativeLocator with the given reference figure and |
| * relative location. The location is a constant from |
| * {@link PositionConstants} used as a convenient and readable way to |
| * set both the relativeX and relativeY values. |
| * |
| * @param editPart |
| * the reference figure |
| * @param location |
| * one of NORTH, NORTH_EAST, etc. |
| */ |
| public ColumnCornerLocator(GraphicalEditPart editPart, int location) { |
| this.editPart = editPart; |
| switch (location & PositionConstants.NORTH_SOUTH) { |
| case PositionConstants.NORTH: |
| relativeY = 0; |
| break; |
| case PositionConstants.SOUTH: |
| relativeY = 1.0; |
| break; |
| default: |
| relativeY = 0.5; |
| } |
| |
| switch (location & PositionConstants.EAST_WEST) { |
| case PositionConstants.WEST: |
| relativeX = 0; |
| break; |
| case PositionConstants.EAST: |
| relativeX = 1.0; |
| break; |
| default: |
| relativeX = 0.5; |
| } |
| } |
| |
| /** |
| * Relocates the target using the relative offset locations. |
| * |
| * @see org.eclipse.draw2d.Locator#relocate(org.eclipse.draw2d.IFigure) |
| */ |
| public void relocate(IFigure target) { |
| Rectangle targetBounds = ColumnHelper.getColumnBounds(editPart, |
| target); |
| |
| Dimension targetSize = target.getPreferredSize(); |
| |
| targetBounds.x += (int) (targetBounds.width * relativeX - ((targetSize.width + 1) / 2)); |
| targetBounds.y += (int) (targetBounds.height * relativeY - ((targetSize.height + 1) / 2)); |
| targetBounds.setSize(targetSize); |
| target.setBounds(targetBounds); |
| } |
| } |
| |
| private class ColumnBorderHandleLocator implements Locator { |
| private GraphicalEditPart editPart; |
| |
| /** |
| * @param editPart |
| */ |
| public ColumnBorderHandleLocator(GraphicalEditPart editPart) { |
| this.editPart = editPart; |
| } |
| |
| public void relocate(IFigure target) { |
| target.setBounds(ColumnHelper.getColumnBounds(editPart, target)); |
| } |
| } |
| |
| private static class MyMoveHandle extends SquareHandle |
| { |
| /** |
| * @param owner |
| * @param loc |
| */ |
| public MyMoveHandle(GraphicalEditPart owner, Locator loc) { |
| super(owner, loc); |
| setCursor(SharedCursors.SIZEALL); |
| } |
| |
| protected void init() { |
| setPreferredSize(16,16); |
| } |
| |
| protected Color getBorderColor() { |
| return ColorConstants.black; |
| } |
| |
| protected Color getFillColor() { |
| return ColorConstants.white; |
| } |
| |
| protected DragTracker createDragTracker() { |
| DragTracker tracker = new DragEditPartsTracker(getOwner()); |
| |
| return tracker; |
| } |
| |
| public void paintFigure(Graphics graphics) { |
| super.paintFigure(graphics); |
| final Image moveImage = PDPlugin.getDefault().getImage("MoveHandle.png"); |
| Point topLeft = getBounds().getTopLeft().getCopy(); |
| topLeft.performTranslate(3,3); |
| graphics.drawImage(moveImage, topLeft); |
| } |
| } |
| } |