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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 TIBCO Software Inc. 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 .
*/
package net.sf.jasperreports.chrome;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.github.kklisura.cdt.protocol.commands.Page;
import com.github.kklisura.cdt.protocol.commands.Runtime;
import com.github.kklisura.cdt.protocol.types.page.CaptureScreenshotFormat;
import com.github.kklisura.cdt.protocol.types.page.Viewport;
import com.github.kklisura.cdt.protocol.types.runtime.AwaitPromise;
import com.github.kklisura.cdt.protocol.types.runtime.Evaluate;
import com.github.kklisura.cdt.protocol.types.runtime.ExceptionDetails;
import com.github.kklisura.cdt.protocol.types.runtime.RemoteObject;
import com.github.kklisura.cdt.services.ChromeDevToolsService;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.util.Base64Util;
/**
* @author Lucian Chirita ([email protected])
*/
public class ChromePage
{
private static final Log log = LogFactory.getLog(ChromePage.class);
private final ChromeDevToolsService devToolsService;
public ChromePage(ChromeDevToolsService devToolsService)
{
this.devToolsService = devToolsService;
}
public T evaluatePromise(String promiseScript)
{
Runtime runtime = devToolsService.getRuntime();
Evaluate evaluate = runtime.evaluate(promiseScript);
checkException(evaluate.getExceptionDetails());
RemoteObject evaluateResult = evaluate.getResult();
AwaitPromise promise = runtime.awaitPromise(evaluateResult.getObjectId(), true, false);
checkException(promise.getExceptionDetails());
RemoteObject pResult = promise.getResult();
@SuppressWarnings("unchecked")
T result = (T) pResult.getValue();
return result;
}
protected void checkException(ExceptionDetails exceptionDetails)
{
if (exceptionDetails != null)
{
String exceptionString = null;
RemoteObject exception = exceptionDetails.getException();
if (exception != null)
{
if (exception.getDescription() != null)
{
exceptionString = exception.getDescription();
}
else if (exception.getValue() != null)
{
exceptionString = exception.getValue().toString();
}
}
log.error("Script error: " + exceptionDetails.getText()
+ ", exception: " + exceptionString);
throw new JRRuntimeException("Script failed: " + exceptionDetails.getText());
}
}
public byte[] captureScreenshot(int width, int height, double zoomFactor)
{
Viewport viewport = new Viewport();
viewport.setX(0d);
viewport.setY(0d);
viewport.setWidth((double) width);
viewport.setHeight((double) height);
viewport.setScale(zoomFactor);
Page page = devToolsService.getPage();
String screenshotString = page.captureScreenshot(CaptureScreenshotFormat.PNG, 100,
viewport, true);
try
{
byte[] imageData = Base64Util.decode(screenshotString);
return imageData;
}
catch (IOException e)
{
throw new JRRuntimeException(e);
}
}
}