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iText, a free Java-PDF library
/*
* $Id: PdfDiv.java 6192 2014-01-29 14:37:53Z eugenemark $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2014 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, 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.pdf;
import com.itextpdf.awt.geom.AffineTransform;
import com.itextpdf.text.*;
import com.itextpdf.text.api.Spaceable;
import com.itextpdf.text.pdf.interfaces.IAccessibleElement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* A special element to put a collection of elements at an absolute position.
*/
public class PdfDiv implements Element, Spaceable, IAccessibleElement {
public enum FloatType {NONE, LEFT, RIGHT};
public enum PositionType {STATIC, ABSOLUTE, FIXED, RELATIVE};
private ArrayList content;
private Float left = null;
private Float top = null;
private Float right = null;
private Float bottom = null;
private Float width = null;
private Float height = null;
private Float percentageHeight = null;
private Float percentageWidth = null;
private float contentWidth = 0;
private float contentHeight = 0;
private int textAlignment = Element.ALIGN_UNDEFINED;
private float paddingLeft = 0;
private float paddingRight = 0;
private float paddingTop = 0;
private float paddingBottom = 0;
private FloatType floatType = FloatType.NONE;
private PositionType position = PositionType.STATIC;
private FloatLayout floatLayout = null;
private float yLine;
protected PdfName role = PdfName.DIV;
protected HashMap accessibleAttributes = null;
protected AccessibleElementId id = new AccessibleElementId();
public float getContentWidth() {
return contentWidth;
}
public void setContentWidth(float contentWidth) {
this.contentWidth = contentWidth;
}
public float getContentHeight() {
return contentHeight;
}
public void setContentHeight(float contentHeight) {
this.contentHeight = contentHeight;
}
public float getActualHeight() {
return height != null && height >= contentHeight ? height : contentHeight;
}
public float getActualWidth() {
return width != null && width >= contentWidth ? width : contentWidth;
}
public Float getPercentageHeight() {
return percentageHeight;
}
public void setPercentageHeight(Float percentageHeight) {
this.percentageHeight = percentageHeight;
}
public Float getPercentageWidth() {
return percentageWidth;
}
public void setPercentageWidth(Float percentageWidth) {
this.percentageWidth = percentageWidth;
}
public BaseColor getBackgroundColor() {
return backgroundColor;
}
public void setBackgroundColor(BaseColor backgroundColor) {
this.backgroundColor = backgroundColor;
}
public float getYLine() {
return yLine;
}
private BaseColor backgroundColor = null;
/**
* The spacing before the table.
*/
protected float spacingBefore;
/**
* The spacing after the table.
*/
protected float spacingAfter;
public PdfDiv() {
content = new ArrayList();
}
/**
* Gets all the chunks in this element.
*
* @return an ArrayList
*/
public List getChunks() {
return new ArrayList();
}
/**
* Gets the type of the text element.
*
* @return a type
*/
public int type() {
return Element.DIV;
}
/**
* @see com.itextpdf.text.Element#isContent()
* @since iText 2.0.8
*/
public boolean isContent() {
return true;
}
/**
* @see com.itextpdf.text.Element#isNestable()
* @since iText 2.0.8
*/
public boolean isNestable() {
return true;
}
/**
* Processes the element by adding it (or the different parts) to an
* ElementListener.
*
* @param listener an ElementListener
* @return true if the element was processed successfully
*/
public boolean process(final ElementListener listener) {
try {
return listener.add(this);
}
catch(DocumentException de) {
return false;
}
}
/**
* Sets the spacing before this table.
*
* @param spacing the new spacing
*/
public void setSpacingBefore(final float spacing) {
this.spacingBefore = spacing;
}
/**
* Sets the spacing after this table.
*
* @param spacing the new spacing
*/
public void setSpacingAfter(final float spacing) {
this.spacingAfter = spacing;
}
/**
* Gets the spacing before this table.
*
* @return the spacing
*/
public float getSpacingBefore() {
return spacingBefore;
}
/**
* Gets the spacing after this table.
*
* @return the spacing
*/
public float getSpacingAfter() {
return spacingAfter;
}
/**
* Gets the alignment of this paragraph.
*
* @return textAlignment
*/
public int getTextAlignment() {
return this.textAlignment;
}
/**
* Sets the alignment of this paragraph.
*
* @param textAlignment the new alignment
*/
public void setTextAlignment(int textAlignment) {
this.textAlignment = textAlignment;
}
public void addElement(Element element) {
content.add(element);
}
public Float getLeft() {
return this.left;
}
public void setLeft(Float left) {
this.left = left;
}
public Float getRight() {
return this.right;
}
public void setRight(Float right) {
this.right = right;
}
public Float getTop() {
return this.top;
}
public void setTop(Float top) {
this.top = top;
}
public Float getBottom() {
return this.bottom;
}
public void setBottom(Float bottom) {
this.bottom = bottom;
}
public Float getWidth() {
return this.width;
}
public void setWidth(Float width) {
this.width = width;
}
public Float getHeight() {
return this.height;
}
public void setHeight(Float height) {
this.height = height;
}
public float getPaddingLeft() {
return paddingLeft;
}
public void setPaddingLeft(float paddingLeft) {
this.paddingLeft = paddingLeft;
}
public float getPaddingRight() {
return paddingRight;
}
public void setPaddingRight(float paddingRight) {
this.paddingRight = paddingRight;
}
public float getPaddingTop() {
return paddingTop;
}
public void setPaddingTop(float paddingTop) {
this.paddingTop = paddingTop;
}
public float getPaddingBottom() {
return paddingBottom;
}
public void setPaddingBottom(float paddingBottom) {
this.paddingBottom = paddingBottom;
}
public FloatType getFloatType() {
return floatType;
}
public void setFloatType(FloatType floatType) {
this.floatType = floatType;
}
public PositionType getPosition() {
return position;
}
public void setPosition(PositionType position) {
this.position = position;
}
public ArrayList getContent() {
return content;
}
public void setContent(ArrayList content) {
this.content = content;
}
public int layout(final PdfContentByte canvas, boolean useAscender, boolean simulate, final float llx, final float lly, final float urx, final float ury) throws DocumentException {
float leftX = Math.min(llx, urx);
float maxY = Math.max(lly, ury);
float minY = Math.min(lly, ury);
float rightX = Math.max(llx, urx);
yLine = maxY;
boolean contentCutByFixedHeight = false;
if (width != null && width > 0) {
if (width < rightX - leftX) {
rightX = leftX + width;
} else if (width > rightX - leftX) {
return ColumnText.NO_MORE_COLUMN;
}
} else if (percentageWidth != null) {
contentWidth = (rightX - leftX) * percentageWidth;
rightX = leftX + contentWidth;
}
if (height != null && height > 0) {
if (height < maxY - minY) {
minY = maxY - height;
contentCutByFixedHeight = true;
} else if (height > maxY - minY) {
return ColumnText.NO_MORE_COLUMN;
}
} else if (percentageHeight != null) {
if (percentageHeight < 1.0) {
contentCutByFixedHeight = true;
}
contentHeight = (maxY - minY) * percentageHeight;
minY = maxY - contentHeight;
}
if (!simulate && position == PdfDiv.PositionType.RELATIVE) {
Float translationX = null;
if (left != null) {
translationX = left;
} else if (right != null) {
translationX = -right;
} else {
translationX = 0f;
}
Float translationY = null;
if (top != null) {
translationY = -top;
} else if (bottom != null) {
translationY = bottom;
} else {
translationY = 0f;
}
canvas.saveState();
canvas.transform(new AffineTransform(1f, 0, 0, 1f, translationX, translationY));
}
if (!simulate) {
if (backgroundColor != null && getActualWidth() > 0 && getActualHeight() > 0) {
float backgroundWidth = getActualWidth();
float backgroundHeight = getActualHeight();
if (width != null) {
backgroundWidth = width > 0 ? width : 0;
}
if (height != null) {
backgroundHeight = height > 0 ? height : 0;
}
if (backgroundWidth > 0 && backgroundHeight > 0) {
Rectangle background = new Rectangle(leftX, maxY - backgroundHeight, leftX + backgroundWidth, maxY);
background.setBackgroundColor(backgroundColor);
PdfArtifact artifact = new PdfArtifact();
canvas.openMCBlock(artifact);
canvas.rectangle(background);
canvas.closeMCBlock(artifact);
}
}
}
if (percentageWidth == null) {
contentWidth = 0;
}
if (percentageHeight == null) {
contentHeight = 0;
}
minY += paddingBottom;
leftX += paddingLeft;
rightX -= paddingRight;
yLine -= paddingTop;
int status = ColumnText.NO_MORE_TEXT;
if (!content.isEmpty()) {
if (this.floatLayout == null) {
ArrayList floatingElements = new ArrayList(content);
floatLayout = new FloatLayout(floatingElements, useAscender);
}
floatLayout.setSimpleColumn(leftX, minY, rightX, yLine);
status = floatLayout.layout(canvas, simulate);
yLine = floatLayout.getYLine();
if (percentageWidth == null && contentWidth < floatLayout.getFilledWidth()) {
contentWidth = floatLayout.getFilledWidth();
}
}
if (!simulate && position == PdfDiv.PositionType.RELATIVE) {
canvas.restoreState();
}
yLine -= paddingBottom;
if (percentageHeight == null) {
contentHeight = maxY - yLine;
}
if (percentageWidth == null) {
contentWidth += paddingLeft + paddingRight;
}
return contentCutByFixedHeight ? ColumnText.NO_MORE_TEXT : status;
}
public PdfObject getAccessibleAttribute(final PdfName key) {
if (accessibleAttributes != null)
return accessibleAttributes.get(key);
else
return null;
}
public void setAccessibleAttribute(final PdfName key, final PdfObject value) {
if (accessibleAttributes == null)
accessibleAttributes = new HashMap();
accessibleAttributes.put(key, value);
}
public HashMap getAccessibleAttributes() {
return accessibleAttributes;
}
public PdfName getRole() {
return role;
}
public void setRole(final PdfName role) {
this.role = role;
}
public AccessibleElementId getId() {
return id;
}
public void setId(final AccessibleElementId id) {
this.id = id;
}
public boolean isInline() {
return false;
}
}
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