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/******************************************************************************* |
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/******************************************************************************* |
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* Copyright (c) 2000, 2007 IBM Corporation and others. |
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* Copyright (c) 2000, 2008 IBM Corporation and others. |
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* All rights reserved. This program and the accompanying materials |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* which accompanies this distribution, and is available at |
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import org.eclipse.swt.SWT; |
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import org.eclipse.swt.SWT; |
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import org.eclipse.swt.events.KeyEvent; |
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import org.eclipse.swt.events.KeyEvent; |
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import org.eclipse.swt.graphics.Cursor; |
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import org.eclipse.swt.graphics.Cursor; |
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import org.eclipse.swt.widgets.Control; |
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import org.eclipse.draw2d.FigureCanvas; |
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import org.eclipse.draw2d.IFigure; |
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import org.eclipse.draw2d.IFigure; |
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import org.eclipse.draw2d.PositionConstants; |
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import org.eclipse.draw2d.PositionConstants; |
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import org.eclipse.draw2d.Viewport; |
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import org.eclipse.draw2d.geometry.Dimension; |
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import org.eclipse.draw2d.geometry.Dimension; |
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import org.eclipse.draw2d.geometry.Point; |
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import org.eclipse.draw2d.geometry.Point; |
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import org.eclipse.draw2d.geometry.PrecisionPoint; |
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import org.eclipse.draw2d.geometry.PrecisionPoint; |
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import org.eclipse.draw2d.geometry.PrecisionRectangle; |
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import org.eclipse.draw2d.geometry.PrecisionRectangle; |
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import org.eclipse.draw2d.geometry.Rectangle; |
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import org.eclipse.gef.AutoexposeHelper; |
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import org.eclipse.gef.AutoexposeHelper; |
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import org.eclipse.gef.EditPart; |
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import org.eclipse.gef.EditPart; |
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showTargetFeedback(); |
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showTargetFeedback(); |
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showSourceFeedback(); |
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showSourceFeedback(); |
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setCurrentCommand(getCommand()); |
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setCurrentCommand(getCommand()); |
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// Expose the diagram as the user scrolls in the area handled by the |
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// autoexpose helper. |
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updateAutoexposeHelper(); |
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} |
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} |
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return true; |
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return true; |
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} |
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} |
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protected Cursor calculateCursor() { |
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if (isInState(STATE_DRAG_IN_PROGRESS) |
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|| isInState(STATE_ACCESSIBLE_DRAG_IN_PROGRESS)) { |
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// Give some feedback so the user knows the area where autoscrolling |
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// will occur. |
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if (getAutoexposeHelper() != null) { |
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return SharedCursors.HAND; |
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} else { |
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// Give some feedback so the user knows that they can't drag |
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// outside the viewport. |
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Control control = getCurrentViewer().getControl(); |
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if (control instanceof FigureCanvas) { |
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Viewport viewport = ((FigureCanvas) control).getViewport(); |
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Rectangle rect = Rectangle.SINGLETON; |
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viewport.getClientArea(rect); |
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viewport.translateToParent(rect); |
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viewport.translateToAbsolute(rect); |
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if (!rect.contains(getLocation())) { |
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return getDisabledCursor(); |
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} |
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} |
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} |
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} |
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return super.calculateCursor(); |
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} |
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/** |
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/** |
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* Calls {@link TargetingTool#updateAutoexposeHelper()} if a drag is in progress. |
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* Calls {@link TargetingTool#updateAutoexposeHelper()} if a drag is in progress. |
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* @see org.eclipse.gef.tools.TargetingTool#handleHover() |
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* @see org.eclipse.gef.tools.TargetingTool#handleHover() |
