/*******************************************************************************
* CogTool Copyright Notice and Distribution Terms
* CogTool 1.3, Copyright (c) 2005-2013 Carnegie Mellon University
* This software is distributed under the terms of the FSF Lesser
* Gnu Public License (see LGPL.txt).
*
* CogTool is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* CogTool is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with CogTool; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* CogTool makes use of several third-party components, with the
* following notices:
*
* Eclipse SWT version 3.448
* Eclipse GEF Draw2D version 3.2.1
*
* Unless otherwise indicated, all Content made available by the Eclipse
* Foundation is provided to you under the terms and conditions of the Eclipse
* Public License Version 1.0 ("EPL"). A copy of the EPL is provided with this
* Content and is also available at http://www.eclipse.org/legal/epl-v10.html.
*
* CLISP version 2.38
*
* Copyright (c) Sam Steingold, Bruno Haible 2001-2006
* This software is distributed under the terms of the FSF Gnu Public License.
* See COPYRIGHT file in clisp installation folder for more information.
*
* ACT-R 6.0
*
* Copyright (c) 1998-2007 Dan Bothell, Mike Byrne, Christian Lebiere &
* John R Anderson.
* This software is distributed under the terms of the FSF Lesser
* Gnu Public License (see LGPL.txt).
*
* Apache Jakarta Commons-Lang 2.1
*
* This product contains software developed by the Apache Software Foundation
* (http://www.apache.org/)
*
* jopt-simple version 1.0
*
* Copyright (c) 2004-2013 Paul R. Holser, Jr.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Mozilla XULRunner 1.9.0.5
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/.
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The J2SE(TM) Java Runtime Environment version 5.0
*
* Copyright 2009 Sun Microsystems, Inc., 4150
* Network Circle, Santa Clara, California 95054, U.S.A. All
* rights reserved. U.S.
* See the LICENSE file in the jre folder for more information.
******************************************************************************/
package edu.cmu.cs.hcii.cogtool.view;
import java.util.Iterator;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.draw2d.geometry.Translatable;
import edu.cmu.cs.hcii.cogtool.util.PrecisionUtilities;
/**
* @author alexeiser
*
*/
public class ScalableGraphicalFigure extends Figure implements CogToolScalableFigure
{
protected double scale = 1.0;
/**
* Returns the area occupied by the children in UNSCALED coordinates
*/
public Rectangle getChildrenUtilizedAreaUnscaled()
{
Rectangle r = null;
Iterator<?> iter = getChildren().iterator();
while (iter.hasNext()) {
IFigure fi = (IFigure) iter.next();
if (r == null) {
r = new Rectangle(fi.getBounds());
}
else {
r.union(fi.getBounds());
}
}
return (r == null) ? new Rectangle(0, 0, 0, 0) : r;
}
/**
* Returns the area occupied by the children in SCALED coordinates
*/
public Rectangle getChildrenUtilizedAreaScaled()
{
Rectangle r = getChildrenUtilizedAreaUnscaled();
int right = PrecisionUtilities.round((r.x + r.width) * scale);
int bottom = PrecisionUtilities.round((r.y + r.height) * scale);
r.x = PrecisionUtilities.round(r.x * scale);
r.y = PrecisionUtilities.round(r.y * scale);
r.width = right - r.x;
r.height = bottom - r.y;
return r;
}
/**
* @see IFigure#getClientArea(Rectangle)
*/
@Override
public Rectangle getClientArea(Rectangle r)
{
super.getClientArea(r);
int right = PrecisionUtilities.round((r.x + r.width) / scale);
int bottom = PrecisionUtilities.round((r.y + r.height) / scale);
r.x = PrecisionUtilities.round(r.x / scale);
r.y = PrecisionUtilities.round(r.y / scale);
r.width = right - r.x;
r.height = bottom - r.y;
return r;
}
/**
* @see Figure#getPreferredSize(int, int)
*/
@Override
public Dimension getPreferredSize(int wHint, int hHint)
{
Dimension d = super.getPreferredSize(wHint, hHint);
int w = getInsets().getWidth();
int h = getInsets().getHeight();
return d.getExpanded(-w, -h).scale(scale).expand(w, h);
}
/**
* Returns the scale level, default is 1.0.
* @return the scale level
*/
public double getScale()
{
return scale;
}
/**
* @see org.eclipse.draw2d.IFigure#isCoordinateSystem()
*/
@Override
public boolean isCoordinateSystem()
{
return true;
}
/**
* Sets the zoom level
* @param newZoom The new zoom level
*/
public void setScale(double newZoom)
{
if (scale == newZoom) {
return;
}
scale = newZoom;
revalidate();
repaint();
}
/**
* @see org.eclipse.draw2d.Figure#translateFromParent(Translatable)
*/
@Override
public void translateFromParent(Translatable t)
{
t.performScale(1.0 / scale);
}
/**
* @see org.eclipse.draw2d.Figure#translateToParent(Translatable)
*/
@Override
public void translateToParent(Translatable t)
{
t.performScale(scale);
}
}