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adding RTL support #303

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adding RTL support #303

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20 changes: 19 additions & 1 deletion pdf-workitem/pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,24 @@
</organization>

<dependencies>
<dependency>
<!-- ALWAYS required, usually included transitively. -->
<groupId>com.openhtmltopdf</groupId>
<artifactId>openhtmltopdf-core</artifactId>
<version>1.0.10</version>
</dependency>
<dependency>
<!-- Required for PDF output. -->
<groupId>com.openhtmltopdf</groupId>
<artifactId>openhtmltopdf-pdfbox</artifactId>
<version>1.0.10</version>
</dependency>
<dependency>
<!-- Optional, leave out if you do not need right-to-left or bi-directional text support. -->
<groupId>com.openhtmltopdf</groupId>
<artifactId>openhtmltopdf-rtl-support</artifactId>
<version>1.0.10</version>
</dependency>
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-core</artifactId>
Expand Down Expand Up @@ -202,4 +220,4 @@
</plugins>
</build>

</project>
</project>
57 changes: 23 additions & 34 deletions pdf-workitem/src/main/java/org/jbpm/process/workitem/pdf/GeneratePDFWorkitemHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,10 +21,6 @@
import java.util.HashMap;
import java.util.Map;

import freemarker.cache.StringTemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateExceptionHandler;
import org.jbpm.document.Document;
import org.jbpm.document.service.impl.DocumentImpl;
import org.jbpm.process.workitem.core.AbstractLogOrThrowWorkItemHandler;
Expand All @@ -40,7 +36,12 @@
import org.kie.api.runtime.process.WorkItemManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xhtmlrenderer.pdf.ITextRenderer;

import com.openhtmltopdf.bidi.support.ICUBidiReorderer;
import com.openhtmltopdf.bidi.support.ICUBidiSplitter;
import com.openhtmltopdf.pdfboxout.PdfRendererBuilder;



@Wid(widfile = "GeneratePDFDefinitions.wid", name = "GeneratePDF",
displayName = "GeneratePDF",
Expand Down Expand Up @@ -72,8 +73,8 @@ public class GeneratePDFWorkitemHandler extends AbstractLogOrThrowWorkItemHandle
public void executeWorkItem(WorkItem workItem,
WorkItemManager workItemManager) {

try {

try {
RequiredParameterValidator.validate(this.getClass(),
workItem);

Expand All @@ -85,40 +86,32 @@ public void executeWorkItem(WorkItem workItem,
pdfName = "generatedpdf";
}

Configuration cfg = new Configuration(freemarker.template.Configuration.VERSION_2_3_26);
cfg.setDefaultEncoding("UTF-8");
cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
cfg.setLogTemplateExceptions(false);

StringTemplateLoader stringLoader = new StringTemplateLoader();
stringLoader.putTemplate("pdfTemplate",
templateXHTML);
cfg.setTemplateLoader(stringLoader);
logger.info(templateXHTML);

StringWriter stringWriter = new StringWriter();

Template pdfTemplate = cfg.getTemplate("pdfTemplate");
pdfTemplate.process(workItem.getParameters(),
stringWriter);
resultXHTML = stringWriter.toString();

ITextRenderer renderer = new ITextRenderer();
renderer.setDocumentFromString(resultXHTML);
renderer.layout();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PdfRendererBuilder builder = new PdfRendererBuilder();
builder.useFastMode();
builder.withHtmlContent(templateXHTML, null);
builder.toStream(baos);

// Enable RTL support
builder.useUnicodeBidiSplitter(new ICUBidiSplitter.ICUBidiSplitterFactory());
builder.useUnicodeBidiReorderer(new ICUBidiReorderer());
builder.defaultTextDirection(PdfRendererBuilder.TextDirection.RTL);

builder.run();

Document document = new DocumentImpl();
document.setName(pdfName + ".pdf");
document.setLastModified(new Date());

ByteArrayOutputStream baos = new ByteArrayOutputStream();
renderer.createPDF(baos);
document.setContent(baos.toByteArray());

results.put(RESULTS_VALUE,
document);
results.put(RESULTS_VALUE, document);

workItemManager.completeWorkItem(workItem.getId(),
results);
workItemManager.completeWorkItem(workItem.getId(), results);
} catch (Exception e) {
logger.error(e.getMessage());
handleException(e);
Expand All @@ -128,9 +121,5 @@ public void executeWorkItem(WorkItem workItem,
public void abortWorkItem(WorkItem workItem,
WorkItemManager manager) {
}

// for testing
public String getResultXHTML() {
return resultXHTML;
}

}