iText layout.jar Source Code
layout.jar is a component in iText Java library to provide layout functionalities.
iText Java library allows you to generate and manage PDF documents.
The Source Code files are provided together with the JAR file in the binary packge like iText7-Core-7.1.4.zip. You can download it at iText 7 Core Download site.
You can compile it to generate your JAR file, using layout.pom as the build configuration file.
The source code of layout-7.1.4.jar is provided below:
✍: FYIcenter.com
⏎ com/itextpdf/layout/renderer/ListItemRenderer.java
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2018 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: sales@itextpdf.com
*/
package com.itextpdf.layout.renderer;
import com.itextpdf.io.LogMessageConstant;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.pdf.tagging.StandardRoles;
import com.itextpdf.layout.element.ListItem;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.layout.LayoutContext;
import com.itextpdf.layout.layout.LayoutResult;
import com.itextpdf.layout.property.ListSymbolAlignment;
import com.itextpdf.layout.property.ListSymbolPosition;
import com.itextpdf.layout.property.Property;
import com.itextpdf.layout.property.UnitValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.itextpdf.io.util.MessageFormatUtil;
import com.itextpdf.layout.tagging.TaggingDummyElement;
import com.itextpdf.layout.tagging.LayoutTaggingHelper;
import com.itextpdf.layout.tagging.TaggingHintKey;
import java.util.Collections;
import java.util.List;
public class ListItemRenderer extends DivRenderer {
protected IRenderer symbolRenderer;
protected float symbolAreaWidth;
private boolean symbolAddedInside;
/**
* Creates a ListItemRenderer from its corresponding layout object.
* @param modelElement the {@link com.itextpdf.layout.element.ListItem} which this object should manage
*/
public ListItemRenderer(ListItem modelElement) {
super(modelElement);
}
public void addSymbolRenderer(IRenderer symbolRenderer, float symbolAreaWidth) {
this.symbolRenderer = symbolRenderer;
this.symbolAreaWidth = symbolAreaWidth;
}
@Override
public LayoutResult layout(LayoutContext layoutContext) {
if (symbolRenderer != null && this.<Object>getProperty(Property.HEIGHT) == null && !isListSymbolEmpty(symbolRenderer)) {
float[] ascenderDescender = calculateAscenderDescender();
float minHeight = Math.max(symbolRenderer.getOccupiedArea().getBBox().getHeight(), ascenderDescender[0] - ascenderDescender[1]);
updateMinHeight(UnitValue.createPointValue(minHeight));
}
applyListSymbolPosition();
LayoutResult result = super.layout(layoutContext);
if (LayoutResult.PARTIAL == result.getStatus()) {
result.getOverflowRenderer().deleteOwnProperty(Property.MIN_HEIGHT);
}
return result;
}
@Override
public void draw(DrawContext drawContext) {
if (occupiedArea == null) {
Logger logger = LoggerFactory.getLogger(ListItemRenderer.class);
logger.error(MessageFormatUtil.format(LogMessageConstant.OCCUPIED_AREA_HAS_NOT_BEEN_INITIALIZED, "Drawing won't be performed."));
return;
}
if (drawContext.isTaggingEnabled()) {
LayoutTaggingHelper taggingHelper = this.<LayoutTaggingHelper>getProperty(Property.TAGGING_HELPER);
if (taggingHelper != null) {
if (symbolRenderer != null) {
LayoutTaggingHelper.addTreeHints(taggingHelper, symbolRenderer);
}
if (taggingHelper.isArtifact(this)) {
taggingHelper.markArtifactHint(symbolRenderer);
} else {
TaggingHintKey hintKey = LayoutTaggingHelper.getHintKey(this);
TaggingHintKey parentHint = taggingHelper.getAccessibleParentHint(hintKey);
if (parentHint != null && !(StandardRoles.LI.equals(parentHint.getAccessibleElement().getAccessibilityProperties().getRole()))) {
TaggingDummyElement listItemIntermediate = new TaggingDummyElement(StandardRoles.LI);
List<TaggingHintKey> intermediateKid = Collections.<TaggingHintKey>singletonList(LayoutTaggingHelper.getOrCreateHintKey(listItemIntermediate));
taggingHelper.replaceKidHint(hintKey, intermediateKid);
if (symbolRenderer != null) {
taggingHelper.addKidsHint(listItemIntermediate, Collections.<IRenderer>singletonList(symbolRenderer));
}
taggingHelper.addKidsHint(listItemIntermediate, Collections.<IRenderer>singletonList(this));
}
}
}
}
super.draw(drawContext);
// It will be null in case of overflow (only the "split" part will contain symbol renderer.
if (symbolRenderer != null && !symbolAddedInside) {
symbolRenderer.setParent(this);
float x = occupiedArea.getBBox().getX();
ListSymbolPosition symbolPosition = (ListSymbolPosition) ListRenderer.getListItemOrListProperty(this, parent, Property.LIST_SYMBOL_POSITION);
if (symbolPosition != ListSymbolPosition.DEFAULT) {
Float symbolIndent = this.getPropertyAsFloat(Property.LIST_SYMBOL_INDENT);
x -= symbolAreaWidth + (float) (symbolIndent == null ? 0 : symbolIndent);
if (symbolPosition == ListSymbolPosition.OUTSIDE) {
UnitValue marginLeftUV = this.getPropertyAsUnitValue(Property.MARGIN_LEFT);
if (!marginLeftUV.isPointValue()) {
Logger logger = LoggerFactory.getLogger(ListItemRenderer.class);
logger.error(MessageFormatUtil.format(LogMessageConstant.PROPERTY_IN_PERCENTS_NOT_SUPPORTED, Property.MARGIN_LEFT));
}
x += marginLeftUV.getValue();
}
}
applyMargins(occupiedArea.getBBox(), false);
applyBorderBox(occupiedArea.getBBox(), false);
if (childRenderers.size() > 0) {
Float yLine = null;
for (int i = 0; i < childRenderers.size(); i++) {
if (childRenderers.get(i).getOccupiedArea().getBBox().getHeight() > 0) {
yLine = ((AbstractRenderer) childRenderers.get(i)).getFirstYLineRecursively();
if (yLine != null) {
break;
}
}
}
if (yLine != null) {
if (symbolRenderer instanceof TextRenderer) {
((TextRenderer) symbolRenderer).moveYLineTo((float) yLine);
} else {
symbolRenderer.move(0, (float) yLine - symbolRenderer.getOccupiedArea().getBBox().getY());
}
} else {
symbolRenderer.move(0, occupiedArea.getBBox().getY() + occupiedArea.getBBox().getHeight() -
(symbolRenderer.getOccupiedArea().getBBox().getY() + symbolRenderer.getOccupiedArea().getBBox().getHeight()));
}
} else {
if (symbolRenderer instanceof TextRenderer) {
((TextRenderer) symbolRenderer).moveYLineTo(occupiedArea.getBBox().getY() + occupiedArea.getBBox().getHeight() - calculateAscenderDescender()[0]);
} else {
symbolRenderer.move(0, occupiedArea.getBBox().getY() + occupiedArea.getBBox().getHeight() -
symbolRenderer.getOccupiedArea().getBBox().getHeight() - symbolRenderer.getOccupiedArea().getBBox().getY());
}
}
applyBorderBox(occupiedArea.getBBox(), true);
applyMargins(occupiedArea.getBBox(), true);
ListSymbolAlignment listSymbolAlignment = (ListSymbolAlignment)parent.<ListSymbolAlignment>getProperty(Property.LIST_SYMBOL_ALIGNMENT,
ListSymbolAlignment.RIGHT);
float xPosition = x - symbolRenderer.getOccupiedArea().getBBox().getX();
if (listSymbolAlignment == ListSymbolAlignment.RIGHT) {
xPosition += symbolAreaWidth - symbolRenderer.getOccupiedArea().getBBox().getWidth();
}
symbolRenderer.move(xPosition, 0);
if (symbolRenderer.getOccupiedArea().getBBox().getRight() > parent.getOccupiedArea().getBBox().getLeft()) {
beginElementOpacityApplying(drawContext);
symbolRenderer.draw(drawContext);
endElementOpacityApplying(drawContext);
}
}
}
@Override
public IRenderer getNextRenderer() {
return new ListItemRenderer((ListItem) modelElement);
}
@Override
protected AbstractRenderer createSplitRenderer(int layoutResult) {
ListItemRenderer splitRenderer = (ListItemRenderer) getNextRenderer();
splitRenderer.parent = parent;
splitRenderer.modelElement = modelElement;
splitRenderer.occupiedArea = occupiedArea;
splitRenderer.isLastRendererForModelElement = false;
if (layoutResult == LayoutResult.PARTIAL) {
splitRenderer.symbolRenderer = symbolRenderer;
splitRenderer.symbolAreaWidth = symbolAreaWidth;
}
splitRenderer.addAllProperties(getOwnProperties());
return splitRenderer;
}
@Override
protected AbstractRenderer createOverflowRenderer(int layoutResult) {
ListItemRenderer overflowRenderer = (ListItemRenderer) getNextRenderer();
overflowRenderer.parent = parent;
overflowRenderer.modelElement = modelElement;
if (layoutResult == LayoutResult.NOTHING) {
overflowRenderer.symbolRenderer = symbolRenderer;
overflowRenderer.symbolAreaWidth = symbolAreaWidth;
}
overflowRenderer.addAllProperties(getOwnProperties());
return overflowRenderer;
}
private void applyListSymbolPosition() {
if (symbolRenderer != null) {
ListSymbolPosition symbolPosition = (ListSymbolPosition) ListRenderer.getListItemOrListProperty(this, parent, Property.LIST_SYMBOL_POSITION);
if (symbolPosition == ListSymbolPosition.INSIDE) {
if (childRenderers.size() > 0 && childRenderers.get(0) instanceof ParagraphRenderer) {
ParagraphRenderer paragraphRenderer = (ParagraphRenderer) childRenderers.get(0);
Float symbolIndent = this.getPropertyAsFloat(Property.LIST_SYMBOL_INDENT);
if (symbolIndent != null) {
symbolRenderer.setProperty(Property.MARGIN_RIGHT, UnitValue.createPointValue((float) symbolIndent));
}
paragraphRenderer.childRenderers.add(0, symbolRenderer);
symbolAddedInside = true;
} else if (childRenderers.size() > 0 && childRenderers.get(0) instanceof ImageRenderer) {
Paragraph p = new Paragraph();
p.getAccessibilityProperties().setRole(null);
IRenderer paragraphRenderer = p.setMargin(0).createRendererSubTree();
Float symbolIndent = this.getPropertyAsFloat(Property.LIST_SYMBOL_INDENT);
if (symbolIndent != null) {
symbolRenderer.setProperty(Property.MARGIN_RIGHT, UnitValue.createPointValue((float) symbolIndent));
}
paragraphRenderer.addChild(symbolRenderer);
paragraphRenderer.addChild(childRenderers.get(0));
childRenderers.set(0, paragraphRenderer);
symbolAddedInside = true;
}
if (!symbolAddedInside) {
Paragraph p = new Paragraph();
p.getAccessibilityProperties().setRole(null);
IRenderer paragraphRenderer = p.setMargin(0).createRendererSubTree();
Float symbolIndent = this.getPropertyAsFloat(Property.LIST_SYMBOL_INDENT);
if (symbolIndent != null) {
symbolRenderer.setProperty(Property.MARGIN_RIGHT, UnitValue.createPointValue((float) symbolIndent));
}
paragraphRenderer.addChild(symbolRenderer);
childRenderers.add(0, paragraphRenderer);
symbolAddedInside = true;
}
}
}
}
private boolean isListSymbolEmpty(IRenderer listSymbolRenderer) {
return listSymbolRenderer instanceof TextRenderer && ((TextRenderer) listSymbolRenderer).getText().toString().length() == 0;
}
private float[] calculateAscenderDescender() {
PdfFont listItemFont = resolveFirstPdfFont();
UnitValue fontSize = this.getPropertyAsUnitValue(Property.FONT_SIZE);
if (listItemFont != null && fontSize != null) {
if (!fontSize.isPointValue()) {
Logger logger = LoggerFactory.getLogger(ListItemRenderer.class);
logger.error(MessageFormatUtil.format(LogMessageConstant.PROPERTY_IN_PERCENTS_NOT_SUPPORTED, Property.FONT_SIZE));
}
float[] ascenderDescender = TextRenderer.calculateAscenderDescender(listItemFont);
return new float[] {fontSize.getValue() * ascenderDescender[0] / TextRenderer.TEXT_SPACE_COEFF, fontSize.getValue() * ascenderDescender[1] / TextRenderer.TEXT_SPACE_COEFF};
}
return new float[] {0, 0};
}
}
⏎ com/itextpdf/layout/renderer/ListItemRenderer.java
Or download all of them as a single archive file:
File name: layout-7.1.4-sources.jar File size: 446816 bytes Release date: 2018-10-09 Download
⇒ iText 5 itextpdf.jar Source Code
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