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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* JavaFXDocInfo.java
* ---------------
*/
package org.jpedal.examples.viewer.commands.javafx;
import java.util.*;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.control.*;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Modality;
import org.jpedal.PdfDecoderInt;
import org.jpedal.examples.viewer.Values;
import org.jpedal.examples.viewer.gui.javafx.dialog.FXDialog;
import org.jpedal.examples.viewer.gui.javafx.dialog.FXMessageDialog;
import org.jpedal.fonts.FontMappings;
import org.jpedal.fonts.StandardFonts;
import org.jpedal.gui.GUIFactory;
import org.jpedal.objects.PdfFileInformation;
import org.jpedal.objects.PdfPageData;
import org.jpedal.objects.acroforms.AcroRenderer;
import org.jpedal.objects.acroforms.ReturnValues;
import org.jpedal.objects.raw.FormObject;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.utils.Messages;
/**
* Shows a Message Dialogue displaying the Documents Information.
*/
public class JavaFXDocInfo {
private static final Font headerFont = Font.font("SanSerif", FontWeight.BOLD, 14); //Title Font
private static final Font textFont = Font.font("SanSerif", 12); //Text Font
private static final String lb = "\n"; //Line Breaker
private static final StackPane treeContainer = new StackPane();
public static void execute(final Object[] args, final GUIFactory currentGUI, final Values commonValues, final PdfDecoderInt decode_pdf) {
if (args == null) {
if (!commonValues.isPDF()) {
currentGUI.showMessageDialog(Messages.getMessage("PdfViewer.ImageSearch"));
}else if(commonValues.getSelectedFile() == null){
currentGUI.showMessageDialog(Messages.getMessage("PdfVieweremptyFile.message"), Messages.getMessage("PdfViewerTooltip.pageSize"),FXMessageDialog.PLAIN_MESSAGE);
}else{
getPropertiesBox(commonValues.getSelectedFile(), commonValues.getFileSize(), commonValues.getPageCount(), commonValues.getCurrentPage(), decode_pdf);
}
}
}
private static void getPropertiesBox(final String selectedFile, final long fileSize, final int pageCount, final int currentPage, final PdfDecoderInt decode_pdf) {
//Setup Vars to Pass.
final String user_dir = System.getProperty("user.dir");
final PdfFileInformation currentFileInformation=decode_pdf.getFileInformationData();
int ptr = 0;
if (ptr == -1) {
ptr = selectedFile.lastIndexOf('/');
}
final String file = selectedFile.substring(ptr + 1, selectedFile.length());
final String path = selectedFile.substring(0, ptr + 1);
//Build the Default Tabs.
final TabPane tabPane = new TabPane();
tabPane.setId("docProp");
final Tab properties = new Tab("Properties");
final Tab fonts = new Tab("Fonts");
final Tab available = new Tab("Available");
final Tab aliases = new Tab("Aliases");
tabPane.setTabClosingPolicy(TabPane.TabClosingPolicy.UNAVAILABLE); //Stops ability to close tabs
//Populate the Properties Tab.
properties.setContent(getPropTab(currentFileInformation,file, path, user_dir, fileSize, pageCount, currentPage, decode_pdf));
//Populate the Fonts Tab.
fonts.setContent(getFontTab(decode_pdf.getInfo(PdfDictionary.Font)));
//Populate the Available Tab.
available.setContent(getAvailableTab());
//Populate the Aliases Tab.
aliases.setContent(getAliasesTab());
tabPane.getTabs().addAll(properties, fonts, available, aliases); //Add tabs to tabPane
//Populate the Forms Tab.
if(getFormsTab(decode_pdf)!=null){
final Tab forms = new Tab("Forms");
forms.setContent(getFormsTab(decode_pdf));
tabPane.getTabs().add(forms);
}
//Populate the Image Tab.
if (org.jpedal.parser.image.ImageCommands.trackImages) {
final Tab image = new Tab("Image");
image.setContent(getImageTab(decode_pdf));
tabPane.getTabs().add(image);
}
//Populate the XML Tab.
final String xmlText=currentFileInformation.getFileXMLMetaData();
if(!xmlText.isEmpty()){
final Tab xml = new Tab("XML");
xml.setContent(getXMLTab(xmlText));
tabPane.getTabs().add(xml);
}
final FXDialog newDialog = new FXDialog(null, Modality.APPLICATION_MODAL, tabPane, 400, 300);
newDialog.show();
}
/**
* Grabs the Contents for the Properties Tab.
* @param file
* @param path
* @param user_dir
* @param size
* @param pageCount
* @param currentPage
* @param decode_pdf
* @return ScrollPane Object
*/
private static ScrollPane getPropTab(final PdfFileInformation currentFileInformation, final String file, final String path, final String user_dir, final long size, final int pageCount, final int currentPage, final PdfDecoderInt decode_pdf) {
//Setup the ScrollPane.
final ScrollPane scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
//get the Pdf file information object to extract info from
if (currentFileInformation != null) {
final VBox content = new VBox();
//Setup General Content.
final Text generalTitle = new Text(lb + Messages.getMessage("PdfViewerGeneral"));
generalTitle.setFont(headerFont);
StringBuffer pdfVersion = new StringBuffer("PDF"); //store PDF version
pdfVersion.append(decode_pdf.getPDFVersion());
//Check if PDF is Linearized
if (decode_pdf.getJPedalObject(PdfDictionary.Linearized) != null) {
pdfVersion.append(" (").append(Messages.getMessage("PdfViewerLinearized.text")).append(") "); //Update PDF version
}
//Populate General Content
final Text generalContent = new Text(Messages.getMessage("PdfViewerFileName") + file + lb
+ Messages.getMessage("PdfViewerFilePath") + path + lb
+ Messages.getMessage("PdfViewerCurrentWorkingDir") + ' ' + user_dir + lb
+ Messages.getMessage("PdfViewerFileSize") + size + " K" + lb
+ Messages.getMessage("PdfViewerPageCount") + pageCount + lb
+ pdfVersion + lb
);
generalContent.setFont(textFont);
//Setup Properties Content.
final Text propertiesTitle = new Text(Messages.getMessage("PdfViewerProperties"));
propertiesTitle.setFont(headerFont);
//Populate the Properties Content
final Text propertiesContent = new Text();
propertiesContent.setFont(textFont);
final String[] values = currentFileInformation.getFieldValues();
final String[] fields = PdfFileInformation.getFieldNames();
for (int i = 0; i < fields.length; i++) {
if (!values[i].isEmpty()) {
propertiesContent.setText(propertiesContent.getText() + fields[i] + " = " + values[i] + lb);
}
}
//Populate the VBox with current information
content.getChildren().addAll(generalTitle, generalContent, propertiesTitle, propertiesContent);
//Setup Page Coordinates Content.
final PdfPageData currentPageSize = decode_pdf.getPdfPageData();
if (currentPageSize != null) {
final Text pageCoordsTitle = new Text(Messages.getMessage("PdfViewerCoords.text"));
pageCoordsTitle.setFont(headerFont);
final Text pageCoordsContent = new Text(Messages.getMessage("PdfViewermediaBox.text") + currentPageSize.getMediaValue(currentPage) + lb
+ Messages.getMessage("PdfViewercropBox.text") + currentPageSize.getCropValue(currentPage) + lb
+ Messages.getMessage("PdfViewerLabel.Rotation") + currentPageSize.getRotation(currentPage) + lb
);
pageCoordsContent.setFont(textFont);
//Populate the VBox with [age coordinate information
content.getChildren().addAll(pageCoordsTitle, pageCoordsContent);
}
scrollPane.setContent(content);
}
return scrollPane;
}
/**
* Grabs the Contents for the Fonts Tab.
* @param xmlTxt
* @return ScrollPane Object
*/
private static ScrollPane getFontTab(final String xmlTxt) {
//Setup the ScrollPane.
final ScrollPane scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
//List of Fonts.
StringBuilder xmlText = new StringBuilder( "Font Substitution Mode: ");
switch (FontMappings.getFontSubstitutionMode()) {
case (1):
xmlText.append("Using File Name");
break;
case (2):
xmlText.append("Using PostScript Name");
break;
case (3):
xmlText.append("Using Family Name");
break;
case (4):
xmlText.append("Using The Full Font Name");
break;
default:
xmlText.append("Unknown Font Substitution Mode");
break;
}
xmlText.append(lb);
if (!xmlTxt.isEmpty()) {
final VBox content = new VBox();
final Text generalTitle = new Text(lb + "General");
generalTitle.setFont(headerFont);
final Text fontContent = new Text(xmlText.toString());
fontContent.setFont(textFont);
final Text fontListTitle = new Text("Fonts Used");
fontListTitle.setFont(headerFont);
final Text fontListContent = new Text(xmlTxt);
fontListContent.setFont(textFont);
content.getChildren().addAll(generalTitle, fontContent, fontListTitle, fontListContent);
scrollPane.setContent(content);
}
return scrollPane;
}
/**
* Grabs the Contents for the Image Tab.
* @param decode_pdf
* @return ScrollPane Object
*/
private static ScrollPane getImageTab(final PdfDecoderInt decode_pdf) {
//Setup the ScrollPane.
final ScrollPane scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
//list of Images (not forms).
final String xmlTxt = decode_pdf.getInfo(PdfDictionary.Image);
if (!xmlTxt.isEmpty()) {
final VBox content = new VBox();
final Text imageListTitle = new Text(lb + "Images Used");
imageListTitle.setFont(headerFont);
final Text imageListContent = new Text(xmlTxt);
imageListContent.setFont(textFont);
content.getChildren().addAll(imageListTitle, imageListContent);
scrollPane.setContent(content);
}
return scrollPane;
}
/**
* Grabs the Contents for the XML Tab.
* @param xmlText
* @return ScrollPane Object
*/
private static ScrollPane getXMLTab(final String xmlText){
//Setup the ScrollPane.
final ScrollPane scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
//Fill the VBox with Content.
final VBox content = new VBox();
final Text imageListTitle = new Text(lb + "XML Content");
imageListTitle.setFont(headerFont);
final Text imageListContent = new Text(xmlText);
imageListContent.setFont(textFont);
content.getChildren().addAll(imageListTitle, imageListContent);
scrollPane.setContent(content);
return scrollPane;
}
/**
* Grabs the Contents for the Forms Tab.
* @param decode_pdf
* @return ScrollPane Object
*/
private static ScrollPane getFormsTab(final PdfDecoderInt decode_pdf) {
ScrollPane scrollPane = null;
//get the form renderer
final AcroRenderer formRenderer = decode_pdf.getFormRenderer();
if (formRenderer != null) {
//get list of forms on page
final Object[] formsOnPage = formRenderer.getFormComponents(null, ReturnValues.FORM_NAMES, decode_pdf.getPageNumber());
//allow for no forms
if (formsOnPage != null) {
final int formCount = formsOnPage.length;
//Setup the ScrollPane.
scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
//Fill the VBox with Content.
final VBox content = new VBox();
final Text tabTitle = new Text(lb + "Page Contains " + formCount + " Form Objects" + lb);
tabTitle.setFont(headerFont);
content.getChildren().addAll(tabTitle);
//populate our list with details
for (final Object aFormsOnPage : formsOnPage) {
// get name of form
final String formName = (String) aFormsOnPage;
//swing component we map data into
final Object[] comp = formRenderer.getFormComponents(formName, ReturnValues.GUI_FORMS_FROM_NAME, -1);
if (comp != null) {
final Text formObject = new Text(formName);
formObject.setFont(headerFont);
//take value or first if array to check for types (will be same if children)
FormObject formObj = null;
//extract list of actual PDF references to display and get FormObject
StringBuilder PDFrefs = new StringBuilder("PDF ref=");
//actual data read from PDF
final Object[] rawFormData = formRenderer.getFormComponents(formName, ReturnValues.FORMOBJECTS_FROM_NAME, -1);
for (final Object aRawFormData : rawFormData) {
formObj = (FormObject) aRawFormData;
PDFrefs.append(' ').append(formObj.getObjectRefAsString());
}
//extract pdf type
final String PDFType = "Type = "
+ PdfDictionary.showAsConstant(formObj.getParameterConstant(PdfDictionary.Type))
+ " Subtype=" + PdfDictionary.showAsConstant(formObj.getParameterConstant(PdfDictionary.Subtype));
final String standardDetails = "Java Class = " + comp[0].getClass();
final Text formObjInfo = new Text(PDFrefs + lb + PDFType + lb + standardDetails);
formObjInfo.setFont(textFont);
content.getChildren().addAll(formObject, formObjInfo);
}
}
scrollPane.setContent(content);
}
}
return scrollPane;
}
/**
* Grabs the Contents for the Aliases Tab.
* @return ScrollPane Object
*/
private static ScrollPane getAliasesTab() {
//Setup the ScrollPane.
final ScrollPane scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.AS_NEEDED);
//Add Tab Title
final Text aliasesTitle = new Text(lb + "Aliases Content");
aliasesTitle.setFont(headerFont);
//list of all fonts fonts
final Text aliasesContent = new Text();
aliasesContent.setFont(textFont);
for (final String nextFont : FontMappings.fontSubstitutionAliasTable.keySet()) {
aliasesContent.setText(aliasesContent.getText() + nextFont + " ==> " + FontMappings.fontSubstitutionAliasTable.get(nextFont) + lb);
}
if (aliasesContent.getText() != null) {
final VBox content = new VBox();
content.getChildren().addAll(aliasesTitle, aliasesContent);
scrollPane.setContent(content);
}
return scrollPane;
}
private static VBox getAvailableTab() {
final VBox container = new VBox();
//Setup Title.
final Text titleText = new Text (lb+"Available Fonts");
titleText.setFont(headerFont);
//Setup the Filter Options.
final GridPane filterContainer = new GridPane();
final Text filterText = new Text("Filter Font List");
filterText.setFont(textFont);
final TextField filterField = new TextField();
filterField.setMaxSize(150, 0);
filterField.setFont(textFont);
final RadioButton sortFolder = new RadioButton("Sort By Folder ");
sortFolder.setFont(textFont);
final RadioButton sortName = new RadioButton("Sort By Name ");
sortFolder.setFont(textFont);
filterContainer.addColumn(1, sortFolder, sortName);
filterContainer.addColumn(2, filterText, filterField);
filterContainer.setAlignment(Pos.CENTER);
filterContainer.setHgap(20);
/*
* Setup the Search Display.
*/
//Add format buttons to a toggle group, so only one be selected.
final ToggleGroup docInfoGroup = new ToggleGroup();
sortFolder.setSelected(true);
docInfoGroup.getToggles().addAll(sortFolder, sortName);
getAvailableFonts(filterField, sortFolder.isSelected());
final ChangeListener updateSelectionListener = new ChangeListener() {
@Override
public void changed(final ObservableValue ov,
final Toggle old_toggle, final Toggle new_toggle) {
getAvailableFonts(filterField, sortFolder.isSelected());
}
};
docInfoGroup.selectedToggleProperty().addListener(updateSelectionListener);
filterField.setOnKeyReleased(new EventHandler() {
@Override
public void handle(final KeyEvent t) {
getAvailableFonts(filterField,sortFolder.isSelected());
}
});
container.getChildren().addAll(titleText,filterContainer, treeContainer);
container.setAlignment(Pos.CENTER);
return container;
}
/**
* list of all fonts properties in sorted order
*/
private static TreeItem populateAvailableFonts(final TreeItem top, String filter, final boolean sortFontsByDir) {
//get list
if (FontMappings.fontSubstitutionTable != null) {
final Set fonts = FontMappings.fontSubstitutionTable.keySet();
final Iterator fontList = FontMappings.fontSubstitutionTable.keySet().iterator();
final int fontCount = fonts.size();
final ArrayList fontNames = new ArrayList(fontCount);
while (fontList.hasNext()) {
fontNames.add(fontList.next());
}
//sort
Collections.sort(fontNames);
final java.util.List location = new ArrayList();
final java.util.List> locationNode = new ArrayList>();
String current;
String lowerCaseFilter="";
if(filter!=null){
lowerCaseFilter=filter.toLowerCase();
}
//build display
for (String nextFont :fontNames) {
current = (FontMappings.fontSubstitutionLocation.get(nextFont));
int ptr = current.lastIndexOf(System.getProperty("file.separator"));
if (ptr == -1 && current.indexOf('/') != -1) {
ptr = current.lastIndexOf('/');
}
if (ptr != -1) {
current = current.substring(0, ptr);
}
if (filter == null || nextFont.toLowerCase().contains(lowerCaseFilter)) {
if (sortFontsByDir && !location.contains(current)) {
location.add(current);
final TreeItem loc = new TreeItem(current);
top.getChildren().add(loc);
locationNode.add(loc);
}
final TreeItem currentFontNode = new TreeItem(nextFont + " = " + FontMappings.fontSubstitutionLocation.get(nextFont));
if (sortFontsByDir) {
final int pos = location.indexOf(current);
locationNode.get(pos).getChildren().add(currentFontNode);
} else {
top.getChildren().add(currentFontNode);
}
//add details
final String loc = FontMappings.fontPropertiesTablePath.get(nextFont);
final Integer type = FontMappings.fontPropertiesTableType.get(nextFont);
final Map properties = StandardFonts.getFontDetails(type, loc);
if (properties != null) {
for (final String key : properties.keySet()) {
final Object value = properties.get(key);
final TreeItem fontDetails = new TreeItem(key + " = " + value);
currentFontNode.getChildren().add(fontDetails);
}
}
}
}
}
return top;
}
private static void getAvailableFonts(final TextField filterText, final boolean sortFontsByDir){
TreeItem fontlist = new TreeItem("Fonts");
fontlist = populateAvailableFonts(fontlist, filterText.getText(),sortFontsByDir);
treeContainer.getChildren().clear();
treeContainer.getChildren().add(new TreeView(fontlist));
}
}