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The Fedora Client is a Java Library that allows API access to a Fedora Repository. The client is typically one part of a full Fedora installation.
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/*
* -----------------------------------------------------------------------------
*
* License and Copyright: The contents of this file are subject to the
* Apache License, Version 2.0 (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.fedora-commons.org/licenses.
*
* 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 entire file consists of original code.
* Copyright © 2008 Fedora Commons, Inc.
*
Copyright © 2002-2007 The Rector and Visitors of the University of
* Virginia and Cornell University
* All rights reserved.
*
* -----------------------------------------------------------------------------
*/
/*
* Copyright (C) Jerry Huxtable 1998-2001. All rights reserved.
*/
package fedora.utilities.policyEditor;
import java.awt.*;
public class ParagraphLayout extends ConstraintLayout
{
public final static int TYPE_MASK = 0x03;
public final static int STRETCH_H_MASK = 0x04;
public final static int STRETCH_V_MASK = 0x08;
public final static int NEW_PARAGRAPH_VALUE = 1;
public final static int NEW_PARAGRAPH_TOP_VALUE = 2;
public final static int NEW_LINE_VALUE = 3;
public final static Integer NEW_PARAGRAPH = new Integer(0x01);
public final static Integer NEW_PARAGRAPH_TOP = new Integer(0x02);
public final static Integer NEW_LINE = new Integer(0x03);
public final static Integer STRETCH_H = new Integer(0x04);
public final static Integer STRETCH_V = new Integer(0x08);
public final static Integer STRETCH_HV = new Integer(0x0c);
public final static Integer NEW_LINE_STRETCH_H = new Integer(0x07);
public final static Integer NEW_LINE_STRETCH_V = new Integer(0x0b);
public final static Integer NEW_LINE_STRETCH_HV = new Integer(0x0f);
protected int hGapMajor, vGapMajor;
protected int hGapMinor, vGapMinor;
protected int rows;
protected int colWidth1;
protected int colWidth2;
public ParagraphLayout()
{
this(10, 10, 12, 11, 4, 4);
}
public ParagraphLayout(int hMargin, int vMargin, int hGapMajor, int vGapMajor, int hGapMinor, int vGapMinor)
{
this.hMargin = hMargin;
this.vMargin = vMargin;
this.hGapMajor = hGapMajor;
this.vGapMajor = vGapMajor;
this.hGapMinor = hGapMinor;
this.vGapMinor = vGapMinor;
}
public void measureLayout(Container target, Dimension dimension, int type)
{
int count = target.getComponentCount();
if (count > 0)
{
Insets insets = target.getInsets();
Dimension size = target.getSize();
int x = 0;
int y = 0;
int rowHeight = 0;
int colWidth = 0;
int numRows = 0;
boolean lastWasParagraph = false;
Dimension[] sizes = new Dimension[count];
// First pass: work out the column widths and row heights
for (int i = 0; i < count; i++)
{
Component c = target.getComponent(i);
if (includeComponent(c))
{
Dimension d = getComponentSize(c, type);
int w = d.width;
int h = d.height;
sizes[i] = d;
Integer n = (Integer)getConstraint(c);
if (i == 0 || n == NEW_PARAGRAPH || n == NEW_PARAGRAPH_TOP)
{
if (i != 0)
y += rowHeight+vGapMajor;
colWidth1 = Math.max(colWidth1, w);
colWidth = 0;
rowHeight = 0;
lastWasParagraph = true;
}
else if (n == NEW_LINE || lastWasParagraph)
{
x = 0;
if (!lastWasParagraph && i != 0)
y += rowHeight+vGapMinor;
colWidth = w;
colWidth2 = Math.max(colWidth2, colWidth);
if (!lastWasParagraph)
rowHeight = 0;
lastWasParagraph = false;
}
else
{
colWidth += w+hGapMinor;
colWidth2 = Math.max(colWidth2, colWidth);
lastWasParagraph = false;
}
rowHeight = Math.max(h, rowHeight);
}
}
// Second pass: actually lay out the components
if (dimension != null)
{
dimension.width = colWidth1 + hGapMajor + colWidth2;
dimension.height = y + rowHeight;
}
else
{
int spareHeight = size.height-(y+rowHeight)-insets.top-insets.bottom-2*vMargin;
x = 0;
y = 0;
lastWasParagraph = false;
int start = 0;
int rowWidth = 0;
Integer paragraphType = NEW_PARAGRAPH;
boolean stretchV = false;
boolean firstLine = true;
for (int i = 0; i < count; i++)
{
Component c = target.getComponent(i);
if (includeComponent(c))
{
Dimension d = sizes[i];
int w = d.width;
int h = d.height;
Integer n = (Integer)getConstraint(c);
int nv = n != null ? n.intValue() : 0;
if (i == 0 || n == NEW_PARAGRAPH || n == NEW_PARAGRAPH_TOP)
{
if (i != 0)
layoutRow(target, sizes, start, i-1, y, rowWidth, rowHeight, firstLine, type, paragraphType);
stretchV = false;
paragraphType = n;
start = i;
firstLine = true;
if (i != 0)
y += rowHeight+vGapMajor;
rowHeight = 0;
rowWidth = colWidth1+hGapMajor-hGapMinor;
lastWasParagraph = true;
}
else if (n == NEW_LINE || lastWasParagraph)
{
if (!lastWasParagraph)
{
layoutRow(target, sizes, start, count-1, y, rowWidth, rowHeight, firstLine, type, paragraphType);
stretchV = false;
start = i;
firstLine = false;
y += rowHeight+vGapMinor;
rowHeight = 0;
}
rowWidth += sizes[i].width+hGapMinor;
lastWasParagraph = false;
}
else
{
rowWidth += sizes[i].width+hGapMinor;
lastWasParagraph = false;
}
if ((nv & STRETCH_V_MASK) != 0 && !stretchV)
{
stretchV = true;
h += spareHeight;
}
rowHeight = Math.max(h, rowHeight);
}
}
layoutRow(target, sizes, start, count-1, y, rowWidth, rowHeight, firstLine, type, paragraphType);
}
}
}
protected void layoutRow(Container target, Dimension[] sizes, int start, int end, int y, int rowWidth, int rowHeight, boolean paragraph, int type, Integer paragraphType)
{
int x = 0;
Insets insets = target.getInsets();
Dimension size = target.getSize();
int spareWidth = size.width-rowWidth-insets.left-insets.right-2*hMargin;
for (int i = start; i <= end; i++)
{
Component c = target.getComponent(i);
if (includeComponent(c))
{
Integer n = (Integer)getConstraint(c);
int nv = n != null ? n.intValue() : 0;
Dimension d = sizes[i];
int w = d.width;
int h = d.height;
if ((nv & STRETCH_H_MASK) != 0)
{
w += spareWidth;
Dimension max = getComponentSize(c, MAXIMUM);
Dimension min = getComponentSize(c, MINIMUM);
w = Math.max(min.width, Math.min(max.width, w));
}
if ((nv & STRETCH_V_MASK) != 0)
{
h = rowHeight;
Dimension max = getComponentSize(c, MAXIMUM);
Dimension min = getComponentSize(c, MINIMUM);
h = Math.max(min.height, Math.min(max.height, h));
}
if (i == start)
{
if (paragraph)
x = colWidth1-w;
else
x = colWidth1 + hGapMajor;
}
else if (paragraph && i == start+1)
{
x = colWidth1 + hGapMajor;
}
int yOffset = paragraphType == NEW_PARAGRAPH_TOP ? 0 : (rowHeight-h)/2;
c.setBounds(insets.left+hMargin+x, insets.top+vMargin+y+yOffset, w, h);
x += w + hGapMinor;
}
}
}
}
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