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/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Bruno Lowagie, Eugene Markovskyi, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text;
import com.itextpdf.text.pdf.draw.DrawInterface;
public class TabStop {
public static TabStop newInstance(float currentPosition, float tabInterval) {
currentPosition = (float)Math.round(currentPosition * 1000) / 1000;
tabInterval = (float)Math.round(tabInterval * 1000) / 1000;
TabStop tabStop = new TabStop(currentPosition + tabInterval - currentPosition % tabInterval);
return tabStop;
}
public enum Alignment {
LEFT,
RIGHT,
CENTER,
ANCHOR
}
protected float position;
protected Alignment alignment = Alignment.LEFT;
protected DrawInterface leader;
protected char anchorChar = '.';
public TabStop(float position) {
this(position, Alignment.LEFT);
}
public TabStop(float position, DrawInterface leader) {
this(position, leader, Alignment.LEFT);
}
public TabStop(float position, Alignment alignment) {
this(position, null, alignment);
}
public TabStop(float position, Alignment alignment, char anchorChar) {
this(position, null, alignment, anchorChar);
}
public TabStop(float position, DrawInterface leader, Alignment alignment) {
this(position, leader, alignment, '.');
}
public TabStop(float position, DrawInterface leader, Alignment alignment, char anchorChar) {
this.position = position;
this.leader = leader;
this.alignment = alignment;
this.anchorChar = anchorChar;
}
public TabStop(TabStop tabStop) {
this(tabStop.getPosition(), tabStop.getLeader(), tabStop.getAlignment(), tabStop.getAnchorChar());
}
public float getPosition() {
return position;
}
public void setPosition(float position) {
this.position = position;
}
public Alignment getAlignment() {
return alignment;
}
public void setAlignment(Alignment alignment) {
this.alignment = alignment;
}
public DrawInterface getLeader() {
return leader;
}
public void setLeader(DrawInterface leader) {
this.leader = leader;
}
public char getAnchorChar() {
return anchorChar;
}
public void setAnchorChar(char anchorChar) {
this.anchorChar = anchorChar;
}
public float getPosition(float tabPosition, float currentPosition, float anchorPosition) {
float newPosition = position;
float textWidth = currentPosition - tabPosition;
switch (alignment) {
case RIGHT:
if (tabPosition + textWidth < position) {
newPosition = position - textWidth;
} else {
newPosition = tabPosition;
}
break;
case CENTER:
if (tabPosition + textWidth / 2f < position) {
newPosition = position - textWidth / 2f;
} else {
newPosition = tabPosition;
}
break;
case ANCHOR:
if (!Float.isNaN(anchorPosition)) {
if (anchorPosition < position) {
newPosition = position - (anchorPosition - tabPosition);
} else {
newPosition = tabPosition;
}
} else {
if (tabPosition + textWidth < position) {
newPosition = position - textWidth;
} else {
newPosition = tabPosition;
}
}
break;
}
return newPosition;
}
}
