/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.components.html;
import java.awt.Dimension;
import net.sf.jasperreports.engine.JRComponentElement;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRGenericElementType;
import net.sf.jasperreports.engine.JRGenericPrintElement;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.component.BaseFillComponent;
import net.sf.jasperreports.engine.component.FillPrepareResult;
import net.sf.jasperreports.engine.fill.JRFillCloneFactory;
import net.sf.jasperreports.engine.fill.JRFillCloneable;
import net.sf.jasperreports.engine.fill.JRTemplateGenericElement;
import net.sf.jasperreports.engine.fill.JRTemplateGenericPrintElement;
import net.sf.jasperreports.engine.type.EvaluationTimeEnum;
import net.sf.jasperreports.engine.type.ScaleImageEnum;
import net.sf.jasperreports.engine.util.HtmlPrintElement;
import net.sf.jasperreports.engine.util.HtmlPrintElementUtils;
import net.sf.jasperreports.extensions.HtmlElementHandlerBundle;
/**
*
* @author Narcis Marcu (narcism@users.sourceforge.net)
* @version $Id: HtmlComponentFill.java 4258 2011-03-21 15:29:00Z narcism $
*/
public class HtmlComponentFill extends BaseFillComponent {
public static final JRGenericElementType HTML_COMPONENT_PRINT_TYPE =
new JRGenericElementType(HtmlElementHandlerBundle.NAMESPACE, HtmlElementHandlerBundle.NAME);
private final HtmlComponent htmlComponent;
private String htmlContent;
private JRTemplateGenericElement template;
private JRTemplateGenericPrintElement printElement;
public HtmlComponentFill(HtmlComponent htmlComponent)
{
this.htmlComponent = htmlComponent;
}
protected HtmlComponent getHtmlComponent()
{
return htmlComponent;
}
protected boolean isEvaluateNow()
{
return htmlComponent.getEvaluationTime() == EvaluationTimeEnum.NOW;
}
public void evaluate(byte evaluation) throws JRException
{
if (isEvaluateNow())
{
evaluateHtmlComponent(evaluation);
}
}
protected void evaluateHtmlComponent(byte evaluation) throws JRException
{
htmlContent = (String) fillContext.evaluate( htmlComponent.getHtmlContentExpression(), evaluation);
}
public JRPrintElement fill()
{
printElement.setY(fillContext.getElementPrintY());
return printElement;
}
public FillPrepareResult prepare(int availableHeight)
{
FillPrepareResult result = null;
JRComponentElement element = fillContext.getComponentElement();
if (template == null) {
template = new JRTemplateGenericElement(
fillContext.getElementOrigin(),
fillContext.getDefaultStyleProvider(),
HTML_COMPONENT_PRINT_TYPE);
template.setMode(htmlComponent.getContext().getComponentElement().getModeValue());
template.setBackcolor(htmlComponent.getContext().getComponentElement().getBackcolor());
template.setForecolor(htmlComponent.getContext().getComponentElement().getForecolor());
}
printElement = new JRTemplateGenericPrintElement(template);
printElement.setX(element.getX());
printElement.setWidth(element.getWidth());
printElement.setHeight(element.getHeight());
if (isEvaluateNow())
{
copy(printElement);
}
else
{
fillContext.registerDelayedEvaluation(printElement,
htmlComponent.getEvaluationTime(), null);
}
Dimension realSize = computeSizeOfPrintElement(printElement);
int realHeight = realSize.height;
int realWidth = realSize.width;
int imageWidth = realWidth;
int imageHeight = realHeight;
if (htmlComponent.getScaleType() == ScaleImageEnum.REAL_SIZE || htmlComponent.getScaleType() == ScaleImageEnum.REAL_HEIGHT) {
if (realWidth > element.getWidth()) {
double wRatio = ((double) element.getWidth()) / realWidth;
imageHeight = (int) (wRatio * realHeight);
imageWidth = element.getWidth();
}
int printElementHeight = Math.max(imageHeight, element.getHeight());
if (imageHeight <= availableHeight) {
result = FillPrepareResult.printStretch(printElementHeight, false);
} else {
result = FillPrepareResult.noPrintOverflow(printElementHeight);
}
if (htmlComponent.getScaleType() == ScaleImageEnum.REAL_SIZE) {
printElement.setWidth(imageWidth);
} else {
printElement.setWidth(element.getWidth());
}
printElement.setHeight(printElementHeight);
} else {
result = FillPrepareResult.PRINT_NO_STRETCH;
}
return result;
}
private Dimension computeSizeOfPrintElement(JRTemplateGenericPrintElement printElement) {
HtmlPrintElement htmlPrintElement = null;
try{
htmlPrintElement = HtmlPrintElementUtils.getHtmlPrintElement();
} catch (JRException e) {
throw new JRRuntimeException(e);
}
return htmlPrintElement.getComputedSize(printElement);
}
public JRFillCloneable createClone(JRFillCloneFactory factory)
{
throw new UnsupportedOperationException();
}
public void evaluateDelayedElement(JRPrintElement element, byte evaluation) throws JRException
{
evaluateHtmlComponent(evaluation);
copy((JRGenericPrintElement) element);
}
protected void copy(JRGenericPrintElement printElement)
{
printElement.setParameterValue(HtmlPrintElement.PARAMETER_HTML_CONTENT, htmlContent);
printElement.setParameterValue(HtmlPrintElement.PARAMETER_SCALE_TYPE, htmlComponent.getScaleType().getName());
printElement.setParameterValue(HtmlPrintElement.PARAMETER_HORIZONTAL_ALIGN, htmlComponent.getHorizontalAlign().getName());
printElement.setParameterValue(HtmlPrintElement.PARAMETER_VERTICAL_ALIGN, htmlComponent.getVerticalAlign().getName());
}
}