src/main/java/org/pdf/forms/writer/PdfComboBoxWriter.java
package org.pdf.forms.writer;
import java.awt.*;
import java.io.IOException;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import org.pdf.forms.fonts.FontHandler;
import org.pdf.forms.gui.IMainFrame;
import org.pdf.forms.model.des.BorderProperties;
import org.pdf.forms.model.des.Borders;
import org.pdf.forms.model.des.LayoutProperties;
import org.pdf.forms.model.des.ObjectProperties;
import org.pdf.forms.widgets.IWidget;
import org.pdf.forms.widgets.components.PdfCaption;
import org.pdf.forms.widgets.components.PdfComboBox;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.itextpdf.awt.DefaultFontMapper;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BaseField;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.GrayColor;
import com.itextpdf.text.pdf.PdfBorderDictionary;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfFormField;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.TextField;
public class PdfComboBoxWriter implements PdfComponentWriter {
private final Logger logger = LoggerFactory.getLogger(PdfComboBoxWriter.class);
private final Set<String> fontSubstitutions = new HashSet<>();
private final FontHandler fontHandler;
public PdfComboBoxWriter(final FontHandler fontHandler) {
this.fontHandler = fontHandler;
}
@Override
public Set<String> getFontSubstitutions() {
return Set.copyOf(fontSubstitutions);
}
@Override
public PdfFormField write(
final IWidget widget,
final Rectangle pageSize,
final int currentPage,
final PdfWriter writer,
final GlobalPdfWriter globalPdfWriter) throws IOException, DocumentException {
//PdfCaption comboBoxCaption = widget.getCaptionComponent();
writeOutCaption(widget, pageSize, currentPage, globalPdfWriter);
final PdfComboBox value = (PdfComboBox) widget.getValueComponent();
final java.awt.Rectangle valueBounds = value.getBounds();
valueBounds.setLocation(widget.getAbsoluteLocationsOfValue());
final Rectangle pdfValueBounds = convertJavaCoordsToPdfCoords(valueBounds, pageSize);
final ObjectProperties objectProperties = widget.getWidgetModel().getProperties().getObject();
final Font font = value.getFont();
final BaseFont baseFont = getBaseFont(font);
final TextField combo = new TextField(writer, pdfValueBounds, widget.getWidgetName());
combo.setFont(baseFont);
combo.setFontSize(value.getFont().getSize());
combo.setTextColor(getBaseColor(widget.getValueComponent().getForeground()));
combo.setChoices(objectProperties.getItems().map(items -> items.getItemValues().toArray(new String[0])).orElse(new String[0]));
final boolean editable = objectProperties.getField().allowCustomTextEntry();
if (editable) {
combo.setOptions(BaseField.EDIT);
}
final String defaultText = objectProperties.getValue().getDefault()
.map(this::convertDefaultValue)
.orElse("");
addBorder(widget, combo);
final PdfFormField field = combo.getComboField();
field.setValueAsString(defaultText);
return field;
}
private String convertDefaultValue(final String defaultValue) {
if (defaultValue.equals("< None >")) {
return "";
}
return defaultValue;
}
private void writeOutCaption(
final IWidget widget,
final Rectangle pageSize,
final int currentPage,
final GlobalPdfWriter globalPdfWriter) {
final PdfCaption caption = widget.getCaptionComponent();
if (caption == null) {
return;
}
if (widget.isComponentSplit()) {
final LayoutProperties layoutProperties = widget.getWidgetModel().getProperties().getLayout();
final String location = layoutProperties.getCaption().getPosition().orElse("None");
if (location.equals("None")) {
return;
}
}
final java.awt.Rectangle captionBounds = caption.getBounds();
captionBounds.setLocation(widget.getAbsoluteLocationsOfCaption());
final Rectangle pdfCaptionBounds = convertJavaCoordsToPdfCoords(captionBounds, pageSize);
// write out caption
final PdfContentByte cb = globalPdfWriter.getContentByte(currentPage);
cb.saveState();
cb.concatCTM(1, 0, 0, 1, pdfCaptionBounds.getLeft(), pdfCaptionBounds.getTop() - captionBounds.height);
final java.awt.Font font = caption.getFont();
final Optional<String> fontDirectory = fontHandler.getFontDirectory(font);
DefaultFontMapper mapper = new DefaultFontMapper();
fontDirectory.ifPresent(mapper::insertDirectory);
/*
* we need to make this erroneous call to awtToPdf to see if an exception is thrown, if it is, it is
* probably because the font cannot be embedded due to licensing restrictions, so substitute with Helvetica
*/
try {
mapper.awtToPdf(font);
} catch (final Exception e) {
logger.error("Failed converting font from AWT to PDF for {}!", font.getName(), e);
mapper = new DefaultFontMapper();
fontSubstitutions.add(font.getFontName());
}
final Graphics2D graphics2D = cb.createGraphics(captionBounds.width, captionBounds.height, mapper, true, .95f);
//Graphics2D graphics2D = cb.createGraphicsShapes(captionBounds.width, captionBounds.height, true, 0.95f);
caption.paint(graphics2D);
graphics2D.dispose();
cb.restoreState();
}
private void addBorder(
final IWidget widget,
final BaseField baseField) {
final Optional<BorderProperties> borderProperties = widget.getWidgetModel().getProperties().getBorder();
if (borderProperties.isEmpty()) {
return;
}
final Borders borders = borderProperties.get().getBorders();
final String style = borders.getBorderStyle().orElse("None");
switch (style) {
case "Solid":
baseField.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
break;
case "Dashed":
baseField.setBorderStyle(PdfBorderDictionary.STYLE_DASHED);
break;
case "Beveled":
baseField.setBorderStyle(PdfBorderDictionary.STYLE_BEVELED);
break;
default:
return;
}
final int borderColor = borders.getBorderColor().map(Integer::parseInt).orElse(Color.WHITE.getRGB());
baseField.setBorderColor(new GrayColor(borderColor));
final int borderWidth = borders.getBorderWidth().map(Integer::parseInt).orElse(1);
baseField.setBorderWidth(borderWidth);
}
private Rectangle convertJavaCoordsToPdfCoords(
final java.awt.Rectangle bounds,
final Rectangle pageSize) {
final int javaX1 = bounds.x - IMainFrame.INSET;
final int javaY1 = bounds.y - IMainFrame.INSET;
final int javaX2 = javaX1 + bounds.width;
final float pdfY1 = pageSize.getHeight() - javaY1 - bounds.height;
final float pdfY2 = pdfY1 + bounds.height;
return new Rectangle(javaX1, pdfY1, javaX2, pdfY2);
}
private BaseFont getBaseFont(final Font font) throws IOException, DocumentException {
final Optional<String> absoluteFontPath = fontHandler.getAbsoluteFontPath(font);
if (absoluteFontPath.isPresent()) {
final String fontPath = absoluteFontPath.get();
try {
return BaseFont.createFont(fontPath, BaseFont.CP1250, BaseFont.EMBEDDED);
} catch (final DocumentException e) {
// A document exception has been thrown meaning that the font cannot be embedded
// due to licensing restrictions
logger.error("Failed creating font from path {}!", fontPath, e);
}
}
// substitute with Helvetica
fontSubstitutions.add(font.getFontName());
return BaseFont.createFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.EMBEDDED);
}
private BaseColor getBaseColor(final Color color) {
return new GrayColor(color.getRGB());
}
}