/*******************************************************************************
* 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
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* 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
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* 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).
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* Apache Jakarta Commons-Lang 2.1
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* This product contains software developed by the Apache Software Foundation
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* jopt-simple version 1.0
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* Copyright (c) 2004-2013 Paul R. Holser, Jr.
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*
* Mozilla XULRunner 1.9.0.5
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* 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
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******************************************************************************/
package edu.cmu.cs.hcii.cogtool.util;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Sash;
public class SashUtility
{
protected static class SashAdjustment extends ControlAdapter
implements Listener
{
protected Composite parent;
protected double leftMinSize;
protected double rightMinSize;
protected Sash sash;
protected FormData sashData;
protected int sashPercentage;
public SashAdjustment(Composite p,
int leftMin,
int rightMin,
Sash s,
FormData sashFormData,
int sashPct)
{
parent = p;
leftMinSize = leftMin;
rightMinSize = rightMin;
sash = s;
sashData = sashFormData;
sashPercentage = sashPct;
}
public void handleEvent(Event e)
{
Rectangle shellRect = parent.getClientArea();
int width = shellRect.width;
// Limit the left and right sides of the sash.
int limitMaxPercentage =
PrecisionUtilities.round(rightMinSize / width * 100);
int limitMinPercentage =
PrecisionUtilities.round(leftMinSize / width * 100);
sashPercentage =
PrecisionUtilities.round(((double) e.x) / width * 100);
sashPercentage =
Math.max(Math.min(sashPercentage,
100 - limitMaxPercentage),
limitMinPercentage);
// prevent the sash from "moving"
e.x =
PrecisionUtilities.round(width * ((double) sashPercentage)
/ 100);
sashData.left = new FormAttachment(sashPercentage, 0);
parent.layout();
}
@Override
public void controlResized(ControlEvent e)
{
Rectangle sashRect = sash.getBounds();
Rectangle shellRect = parent.getClientArea();
int width = shellRect.width;
int limitMaxPercentage =
PrecisionUtilities.round(rightMinSize / width * 100);
int limitMinPercentage =
PrecisionUtilities.round(leftMinSize / width * 100);
if (sashPercentage > 100 - limitMaxPercentage) {
sashPercentage = 100 - limitMaxPercentage;
}
else if (sashPercentage < limitMinPercentage) {
sashPercentage = limitMinPercentage;
}
// prevent the sash from "moving"
sashRect.x =
PrecisionUtilities.round(width * ((double) sashPercentage)
/ 100);
sash.setBounds(sashRect);
sashData.left = new FormAttachment(sashPercentage, 0);
parent.layout();
}
}
public static Sash createVerticalSash(Composite parent,
int leftMinSize,
int rightMinSize,
int loc,
Composite left,
FormData leftData,
Composite right,
FormData rightData)
{
parent.setLayout(new FormLayout());
FormData sashData = new FormData();
final Sash sash = new Sash(parent, SWT.VERTICAL | SWT.SMOOTH);
SashAdjustment listener =
new SashAdjustment(parent, leftMinSize, rightMinSize, sash, sashData, -1);
// If the sash is "dragged" update the layout to demonstrate the change.
sash.addListener(SWT.Selection, listener);
// Add a listener on the shell to listen for resize events.
// Need to update the sash so that it maintains the min size
// property
parent.addControlListener(listener);
// For now, the initial sash percentage is unset:
int sashPercentage = -1;
// Use the static SashPrecentage if it is set.
if (loc == SWT.RIGHT) {
if (sashPercentage == -1) {
sashData.left = new FormAttachment(100, -rightMinSize);
}
else {
sashData.left = new FormAttachment(sashPercentage, 0);
}
}
else {
if (sashPercentage == -1) {
sashData.left = new FormAttachment(0, leftMinSize);
}
else {
sashData.left = new FormAttachment(100 - sashPercentage, 0);
}
}
sashData.top = new FormAttachment(0, 0);
sashData.bottom = new FormAttachment(100, 0);
sash.setLayoutData(sashData);
leftData.right = new FormAttachment(sash, 0, SWT.LEFT);
left.setLayoutData(leftData);
rightData.left = new FormAttachment(sash, 0, SWT.RIGHT);
right.setLayoutData(rightData);
return sash;
}
}