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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 1997-2015 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
*
* ---------------
* Viewer.java
* ---------------
*/
package org.jpedal.examples.viewer;
import java.awt.Container;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ResourceBundle;
import javax.swing.SwingUtilities;
import org.jpedal.*;
import org.jpedal.examples.viewer.commands.OpenFile;
import org.jpedal.examples.viewer.gui.*;
import org.jpedal.examples.viewer.gui.generic.GUISearchWindow;
import org.jpedal.display.GUIThumbnailPanel;
//
import org.jpedal.examples.viewer.utils.*;
import org.jpedal.examples.viewer.objects.ClientExternalHandler;
import org.jpedal.exception.PdfException;
import org.jpedal.external.Options;
import org.jpedal.fonts.FontMappings;
import org.jpedal.gui.GUIFactory;
import org.jpedal.objects.acroforms.actions.ActionHandler;
import org.jpedal.objects.acroforms.actions.DefaultActionHandler;
import org.jpedal.objects.raw.OutlineObject;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.DecoderOptions;
import org.jpedal.utils.LogWriter;
import org.jpedal.utils.Messages;
import org.w3c.dom.Node;
/** PDF Viewer
*
* If you are compiling, you will need to download all the examples source files from :
* How to View PDF File in Java.
*
* Run directly from jar with java -cp jpedal.jar org/jpedal/examples/viewer/Viewer
* or java -jar jpedal.jar
*
* There are plenty of tutorials on how to configure the Viewer on our website Support Section.
*
* See Here for Settings to Customise the PDF Viewer
*
* We also have our JavaFX Viewer documented at :
* JavaFX Viewer Documentation.
*
* If you want to implement your own there is
* a very simple example at :
* JPanel Demo.
* We recommend you look at the full viewer as it is totally configurable and does everything for you.
*
*
* Fully featured GUI viewer and demonstration of JPedal's capabilities.
*
* This class provides the framework for the Viewer and calls other classes which provide the following
* functions:-
*
* - Values commonValues - repository for general settings.
* - Printer currentPrinter - All printing functions and access methods to see if printing active.
* - PdfDecoder decode_pdf - PDF library and panel.
* - ThumbnailPanel thumbnails - provides a thumbnail pane down the left side of page - thumbnails can be clicked on to goto page.
* - PropertiesFile properties - saved values stored between sessions.
* - SwingGUI currentGUI - all Swing GUI functions.
* - SearchWindow searchFrame (not GPL) - search Window to search pages and goto references on any page.
* - Commands currentCommands - parses and executes all options.
* - SwingMouseHandler mouseHandler - handles all mouse and related activity.
*
*
*/
public class Viewer implements ViewerInt{
/**Location of Preferences Files*/
public static final String PREFERENCES_DEFAULT = "jar:/org/jpedal/examples/viewer/res/preferences/Default.xml";
public static final String PREFERENCES_NO_GUI = "jar:/org/jpedal/examples/viewer/res/preferences/NoGUI.xml";
public static final String PREFERENCES_NO_SIDE_BAR = "jar:/org/jpedal/examples/viewer/res/preferences/NoSideTabOrTopButtons.xml";
public static final String PREFERENCES_OPEN_AND_NAV_ONLY = "jar:/org/jpedal/examples/viewer/res/preferences/OpenAndNavOnly.xml";
public static final String PREFERENCES_BEAN = "jar:/org/jpedal/examples/viewer/res/preferences/Bean.xml";
/**repository for general settings*/
protected Values commonValues=new Values();
/**All printing functions and access methods to see if printing active
* - accessed from Commands and GUI */
PrinterInt currentPrinter;
/**PDF library and panel*/
PdfDecoderInt decode_pdf;
/**encapsulates all thumbnail functionality - just ignore if not required*/
GUIThumbnailPanel thumbnails;
/**values saved on file between sessions*/
PropertiesFile properties=new PropertiesFile();
/**general GUI functions*/
protected GUIFactory currentGUI;
/**search window and functionality*/
GUISearchWindow searchFrame;
/**command functions*/
protected Commands currentCommands;
/**warn user if viewer not setup fully*/
private boolean isSetup;
/**tell software to exit on close - default is true*/
public static boolean exitOnClose=true;
/**Throw runtime exception when user tries to open document after close() has been called*/
public static boolean closeCalled;
//
/**
*
* @param defaultFile
* Allow user to open PDF file to display
*/
@Override
public void openDefaultFile(final String defaultFile) {
//get any user set dpi
final String hiresFlag = System.getProperty("org.jpedal.hires");
if(DecoderOptions.hires || hiresFlag != null) {
commonValues.setUseHiresImage(true);
}
//get any user set dpi
final String memFlag=System.getProperty("org.jpedal.memory");
if(memFlag!=null) {
commonValues.setUseHiresImage(false);
}
//reset flag
if(thumbnails.isShownOnscreen()) {
thumbnails.resetToDefault();
}
commonValues.maxViewY=0;// ensure reset for any viewport
/**
* open any default file and selected page
*/
if(defaultFile!=null){
final File testExists=new File(defaultFile);
boolean isURL=false;
if(defaultFile.startsWith("http:")|| defaultFile.startsWith("jar:") || defaultFile.startsWith("file:")){
LogWriter.writeLog("Opening http connection");
isURL=true;
}
if((!isURL) && (!testExists.exists())){
currentGUI.showMessageDialog(defaultFile+ '\n' +Messages.getMessage("PdfViewerdoesNotExist.message"));
}else if((!isURL) &&(testExists.isDirectory())){
currentGUI.showMessageDialog(defaultFile+ '\n' +Messages.getMessage("PdfViewerFileIsDirectory.message"));
}else{
commonValues.setFileSize(testExists.length() >> 10);
commonValues.setSelectedFile(defaultFile);
currentGUI.setViewerTitle(null);
/**see if user set Page*/
final String page=System.getProperty("org.jpedal.page");
final String bookmark=System.getProperty("org.jpedal.bookmark");
if(page!=null && !isURL){
try{
int pageNum=Integer.parseInt(page);
if(pageNum<1){
pageNum=-1;
System.err.println(page+ " must be 1 or larger. Opening on page 1");
LogWriter.writeLog(page+ " must be 1 or larger. Opening on page 1");
}
if(pageNum!=-1) {
openFile(testExists, pageNum);
}
}catch(final Exception e){
System.err.println(page+ "is not a valid number for a page number. Opening on page 1 "+e);
LogWriter.writeLog(page+ "is not a valid number for a page number. Opening on page 1");
}
}else if(bookmark!=null){
openFile(testExists,bookmark);
}else{
currentGUI.openFile(defaultFile);
}
}
}
}
/**
*
* @param defaultFile
* Allow user to open PDF file to display
*/
@Override
public void openDefaultFileAtPage(final String defaultFile, final int page) {
//get any user set dpi
final String hiresFlag = System.getProperty("org.jpedal.hires");
if(DecoderOptions.hires || hiresFlag != null) {
commonValues.setUseHiresImage(true);
}
//get any user set dpi
final String memFlag=System.getProperty("org.jpedal.memory");
if(memFlag!=null) {
commonValues.setUseHiresImage(false);
}
//reset flag
if(thumbnails.isShownOnscreen()) {
thumbnails.resetToDefault();
}
commonValues.maxViewY=0;// ensure reset for any viewport
/**
* open any default file and selected page
*/
if(defaultFile!=null){
final File testExists=new File(defaultFile);
boolean isURL=false;
if(defaultFile.startsWith("http:")|| defaultFile.startsWith("jar:")){
LogWriter.writeLog("Opening http connection");
isURL=true;
}
if((!isURL) && (!testExists.exists())){
currentGUI.showMessageDialog(defaultFile+ '\n' +Messages.getMessage("PdfViewerdoesNotExist.message"));
}else if((!isURL) &&(testExists.isDirectory())){
currentGUI.showMessageDialog(defaultFile+ '\n' +Messages.getMessage("PdfViewerFileIsDirectory.message"));
}else{
commonValues.setSelectedFile(defaultFile);
commonValues.setFileSize(testExists.length() >> 10);
currentGUI.setViewerTitle(null);
openFile(testExists,page);
}
}
}
public PdfDecoderInt getPdfDecoder() {
return decode_pdf;
}
void init(){
//
}
/**
* setup and run client
*/
public Viewer() {
// args and stage in FX not set up yet
// so running init stuff causes the viewer to crash
if(isFX){
return;
}
init();
//enable error messages which are OFF by default
DecoderOptions.showErrorMessages=true;
//
final String prefFile = System.getProperty("org.jpedal.Viewer.Prefs");
if(prefFile != null){
properties.loadProperties(prefFile);
}else{
properties.loadProperties();
}
}
/**
* setup and run client passing in paramter to show if
* running as applet, webstart or JSP (only applet has any effect
* at present)
* @param modeOfOperation The new modeOfOperation(RUNNING_NORMAL,RUNNING_APPLET,RUNNING_WEBSTART,RUNNING_JSP)
*/
public Viewer(final int modeOfOperation) {
init();
//enable error messages which are OFF by default
DecoderOptions.showErrorMessages=true;
final String prefFile = System.getProperty("org.jpedal.Viewer.Prefs");
if(prefFile != null){
properties.loadProperties(prefFile);
}else{
properties.loadProperties();
}
commonValues.setModeOfOperation(modeOfOperation);
}
/**
* setup and run client passing in paramter that points to the preferences file we should use.
* @param prefs Full path to xml file containing preferences
*/
public Viewer(final String prefs) {
init();
//enable error messages which are OFF by default
DecoderOptions.showErrorMessages=true;
try{
properties.loadProperties(prefs);
}catch(final Exception e){
System.err.println("Specified Preferrences file not found at "+prefs+". If this file is within a jar ensure filename has jar: at the begining.\n\nLoading default properties. "+e);
properties.loadProperties();
}
}
/**
* setup and run client passing in parameter that points to the preferences file we should use.
* preferences file
* @param rootContainer Is a swing component that the viewer is displayed inside
* @param preferencesPath The path of the preferences file
*/
public Viewer(final Object rootContainer, final String preferencesPath) {
init();
//enable error messages which are OFF by default
DecoderOptions.showErrorMessages=true;
if(preferencesPath!=null && !preferencesPath.isEmpty()){
try{
properties.loadProperties(preferencesPath);
}catch(final Exception e){
System.err.println("Specified Preferrences file not found at "+preferencesPath+". If this file is within a jar ensure filename has jar: at the begining.\n\nLoading default properties. "+e);
properties.loadProperties();
}
}else{
properties.loadProperties();
}
setRootContainer(rootContainer);
}
@Override
public void setRootContainer(final Object rootContainer){
currentGUI.setRootContainer(rootContainer);
}
/**
* Should be called before setupViewer
*/
@Override
public void loadProperties(final String props){
properties.loadProperties(props);
}
/**
* Should be called before setupViewer
* @param is input of loaded properties
*/
public void loadProperties(final InputStream is){
properties.loadProperties(is);
}
/**
* initialise and run client (default as Application in own Frame)
*/
@Override
public void setupViewer() {
//also allow messages to be suppressed with JVM option
final String flag=System.getProperty("org.jpedal.suppressViewerPopups");
boolean suppressViewerPopups =false;
if(flag!=null && flag.equalsIgnoreCase("true")) {
suppressViewerPopups = true;
}
/**
* set search window position here to ensure
* that gui has correct value
*/
final String searchType = properties.getValue("searchWindowType");
if(searchType!=null && !searchType.isEmpty()){
final int type = Integer.parseInt(searchType);
searchFrame.setViewStyle(type);
}else {
searchFrame.setViewStyle(GUISearchWindow.SEARCH_MENU_BAR);
}
searchFrame.setUpdateListDuringSearch(properties.getValue("updateResultsDuringSearch").equals("true"));
//Set search frame here
currentGUI.setSearchFrame(searchFrame);
/**switch on thumbnails if flag set*/
final String setThumbnail=System.getProperty("org.jpedal.thumbnail");
if(setThumbnail!=null){
if(setThumbnail.equals("true")) {
thumbnails.setThumbnailsEnabled(true);
} else if(setThumbnail.equals("false")) {
thumbnails.setThumbnailsEnabled(false);
}
}else //default
{
thumbnails.setThumbnailsEnabled(true);
}
/**
* non-GUI initialisation
**/
//allow user to override messages
//
/**
* allow user to define country and language settings
*
* you will need a file called messages_XX.properties in
* org.jpedal.international.messages where XX is a valid Locale.
*
* You can also choose an alternative Lovation - see sample code below
*
* You can manually set Java to use a Locale with this code
* (also useful to test)
*
* Example here is Brazil (note no Locale files present for it)
*
* If you make and Locale files, we would be delighted to include them
* in future versions of the software.
*
java.util.Locale aLocale = new java.util.Locale("br", "BR");
java.util.Locale.setDefault(aLocale);
*/
final String customBundle=System.getProperty("org.jpedal.bundleLocation");
//customBundle="org.jpedal.international.messages"; //test code
if(customBundle!=null){
final BufferedReader input_stream;
final ClassLoader loader = Messages.class.getClassLoader();
final String fileName=customBundle.replaceAll("\\.","/")+ '_' +java.util.Locale.getDefault().getLanguage()+".properties";
//also tests if locale file exists and tell user if not
try{
input_stream =new BufferedReader(new InputStreamReader(loader.getResourceAsStream(fileName)));
input_stream.close();
}catch(final IOException ee){
//
java.util.Locale.setDefault(new java.util.Locale("en", "EN"));
currentGUI.showMessageDialog("No locale file "+fileName+" has been defined for this Locale - using English as Default"+
"\n Format is path, using '.' as break ie org.jpedal.international.messages");
}
init(ResourceBundle.getBundle(customBundle));
}else {
init(null);
}
/**
* gui setup, create gui, load properties
*/
currentGUI.init(currentCommands,currentPrinter);
if(searchFrame.getViewStyle()==GUISearchWindow.SEARCH_TABBED_PANE) {
currentGUI.searchInTab(searchFrame);
}
/**
* setup window for warning if renderer has problem
*/
if(!Viewer.isFX){
decode_pdf.getDynamicRenderer().setMessageFrame((Container)currentGUI.getFrame());
}
String propValue = properties.getValue("showfirsttimepopup");
final boolean showFirstTimePopup = !suppressViewerPopups && !propValue.isEmpty() && propValue.equals("true");
if(showFirstTimePopup){
currentGUI.showFirstTimePopup();
properties.setValue("showfirsttimepopup","false");
}
final boolean wasUpdateAvailable = false;
// propValue = properties.getValue("automaticupdate");
// if (!suppressViewerPopups && !propValue.isEmpty() && propValue.equals("true")) {
// wasUpdateAvailable = Update.checkForUpdates(false, currentGUI);
// }
propValue = properties.getValue("displaytipsonstartup");
if(!suppressViewerPopups && !wasUpdateAvailable && !propValue.isEmpty() && propValue.equals("true")){
currentCommands.executeCommand(Commands.TIP,null);
}
//flag so we can warn user if they call executeCommand without it setup
isSetup=true;
}
/**
* setup the viewer
*/
protected void init(final ResourceBundle bundle) {
/**
* load correct set of messages
*/
if(bundle==null){
//load locale file
try{
Messages.setBundle(ResourceBundle.getBundle("org.jpedal.international.messages"));
}catch(final Exception e){
//
LogWriter.writeLog("Exception "+e+" loading resource bundle.\n" +
"Also check you have a file in org.jpedal.international.messages to support Locale="+java.util.Locale.getDefault());
}
}else{
try{
Messages.setBundle(bundle);
}catch(final Exception ee){
LogWriter.writeLog("Exception with bundle "+bundle);
ee.printStackTrace();
}
}
//pass through GUI for use in multipages and Javascript
decode_pdf.addExternalHandler(currentGUI, Options.MultiPageUpdate);
//used to test ability to replace Javascript with own engine
//org.jpedal.objects.javascript.ExpressionEngine marksTest=new TestEngine();
//decode_pdf.addExternalHandler(marksTest, Options.ExpressionEngine);
/**debugging code to create a log*/
//LogWriter.setupLogFile("v");
//LogWriter.log_name = "/mnt/shared/log.txt";
//make sure widths in data CRITICAL if we want to split lines correctly!!
DecoderOptions.embedWidthData = true;
//
/**
* ANNOTATIONS code
*
* replace Annotations with your own custom annotations using paint code
*
*/
//decode_pdf.setAnnotationsVisible(false); //disable built-in annotations and use custom versions
//code to create a unique iconset
//see also org.jpedal.examples.viewer.gui.GUI.handleAnnotations()
//this allows the user to place fonts in the classpath and use these for display, as if embedded
//decode_pdf.addSubstituteFonts("org/jpedal/res/fonts/", true);
//set to extract all
//COMMENT OUT THIS LINE IF USING JUST THE VIEWER
decode_pdf.setExtractionMode(0,1); //values extraction mode,dpi of images, dpi of page as a factor of 72
//don't extract text and images (we just want the display)
/**/
/**
* FONT EXAMPLE CODE showing JPedal's functionality to set values for
* non-embedded fonts.
*
* This allows sophisticated substitution of non-embedded fonts.
*
* Most font mapping is done as the fonts are read, so these calls must
* be made BEFORE the openFile() call.
*/
//
/**
* FONT EXAMPLE - Replace global default for non-embedded fonts.
*
* You can replace Lucida as the standard font used for all non-embedded and substituted fonts
* by using is code.
* Java fonts are case sensitive, but JPedal resolves currentGUI.frame, so you could
* use Webdings, webdings or webDings for Java font Webdings
*/
/** Removed to save time on startup - uncomment if it causes problems
try{
//choice of example font to stand-out (useful in checking results to ensure no font missed.
//In general use Helvetica or similar is recommended
// decode_pdf.setDefaultDisplayFont("SansSerif");
}catch(PdfFontException e){ //if its not available catch error and show valid list
System.out.println(e.getMessage());
//get list of fonts you can use
String[] fontList =GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
System.out.println(Messages.getMessage("PdfViewerFontsFound.message"));
System.out.println("=====================\n");
int count = fontList.length;
for (int i = 0; i < count; i++) {
Font f=new Font(fontList[i],1,10);
System.out.println(fontList[i]+" ("+Messages.getMessage("PdfViewerFontsPostscript.message")+ '=' +f.getPSName()+ ')');
}
System.exit(1);
}/***/
/**
* IMPORTANT note on fonts for EXAMPLES
*
* USEFUL TIP : The Viewer displays a list of fonts used on the
* current PDF page with the File > Fonts menu option.
*
* PDF allows the use of weights for fonts so Arial,Bold is a weight of
* Arial. This value is not case sensitive so JPedal would regard
* arial,bold and aRiaL,BoLd as the same.
*
* Java supports a set of Font families internally (which may have
* weights), while JPedals substitution facility uses physical True Type
* fonts so it is resolving each font weight separately. So mapping
* works differently, depending on which is being used.
*
* If you are using a font, which is named as arial,bold you can use
* either arial,bold or arial (and JPedal will then try to select the
* bold weight if a Java font is used).
*
* So for a font such as Arial,Bold JPedal will test for an external
* truetype font substitution (ie arialMT.ttf) mapped to Arial,Bold. BUT
* if the substitute font is a Java font an additional test will be made
* for a match against Arial if there is no match on Arial,Bold.
*
* If you want to map all Arial to equivalents to a Java font such as
* Times New Roman, just map Arial to Times New Roman (only works for
* inbuilt java fonts). Note if you map Arial,Bold to a Java font such
* as Times New Roman, you will get Times New Roman in a bold weight, if
* available. You cannot set a weight for the Java font.
*
* If you wish to substitute Arial but not Arial,Bold you should
* explicitly map Arial,Bold to Arial,Bold as well.
*
* The reason for the difference is that when using Javas inbuilt fonts
* JPedal can resolve the Font Family and will try to work out the
* weight internally. When substituting Truetype fonts, these only
* contain ONE weight so JPedal is resolving the Font and any weight as
* a separate font . Different weights will require separate files.
*
*/
/**
* FONT EXAMPLE - Use fonts placed in jar for substitution (1.4 and above only)
*
* This allows users to store fonts in the jar and use these for
* substitution. Please see javadoc for full description of usage.
*/
//decode_pdf.addSubstituteFonts(fontPath,enforceMapping)
//
/**
* FONT EXAMPLE - Use fonts located on machine for substitution
*
* This code explains how to use JPedal to substitute fonts which are
* not embedded using fonts held in any font directory.
*
* It works as follows:-
*
* If the -Dorg.jpedal.fontdirs="C:/win/fonts/","/mnt/X11/fonts" is set to a
* comma-separated list of directories, any truetype fonts (with .ttf
* file ending) will be logged and added to the substitution table. So
* arialMT.ttf will be added as arialmt. If arialmt is used in the PDF
* but not embedded, JPedal will use this font file to render it.
*
* If a command line paramter is not appropriate, the call
* setFontDirs(String[] fontDirs) will achieve the same.
*
*
* If the name is not an exact match (ie you have arialMT which you wish
* to use to display arial, you can use the method
* setSubstitutedFontAliases(String[] name, String[] aliases) to convert
* it internally - see sample code at bottom of note.
*
* The Name is not case-sensitive.
*
* Spaces are important so TimesNewRoman and Times New Roman are
* degarded as 2 fonts.
*
* If you have 2 copies of arialMT.ttf in the scanned directories, the
* last one will be used.
*
* If the file was called arialMT,bold.ttf it is resolved as
* ArialMT,bold only.
*
*/
//mappings for non-embedded fonts to use
FontMappings.setFontReplacements();
//decode_pdf.setFontDirs(new String[]{"C:/windows/fonts/","C:/winNT/fonts/"});
/**
* FONT EXAMPLE - Use Standard Java fonts for substitution
*
* This code tells JPedal to substitute fonts which are not embedded.
*
* The Name is not case-sensitive.
*
* Spaces are important so TimesNewRoman and Times New Roman are
* degarded as 2 fonts.
*
* If you have 2 copies of arialMT.ttf in the scanned directories, the
* last one will be used.
*
*
* If you wish to use one of Javas fonts for display (for example, Times
* New Roman is a close match for myCompanyFont in the PDF, you can the
* code below
*
* String[] aliases={"Times New Roman"};//,"helvetica","arial"};
* decode_pdf.setSubstitutedFontAliases("myCompanyFont",aliases);
*
* Here is is used to map Javas Times New Roman (and all weights) to
* TimesNewRoman.
*
* This can also be done with the command -org.jpedal.fontmaps="TimesNewRoman=Times New Roman","font2=pdfFont1"
*/
//String[] nameInPDF={"TimesNewRoman"};//,"helvetica","arial"};
//decode_pdf.setSubstitutedFontAliases("Times New Roman",nameInPDF);
//
/**
* add in external handlers for code - 2 examples supplied
*
//org.jpedal.external.ImageHandler myExampleImageHandler=new org.jpedal.examples.handlers.ExampleImageDecodeHandler();
org.jpedal.external.ImageHandler myExampleImageHandler=new org.jpedal.examples.handlers.ExampleImageDrawOnScreenHandler();
decode_pdf.addExternalHandler(myExampleImageHandler, Options.ImageHandler);
/**/
//
/**
* divert all message to our custom code
*
CustomMessageHandler myExampleCustomMessageHandler =new ExampleCustomMessageHandler();
decode_pdf.addExternalHandler(myExampleCustomMessageHandler, Options.CustomMessageOutput);
/**/
}
static boolean isFX;
/** main method to run the software as standalone application
* @param args Program arguments passed into the Viewer.
*/
public static void main(final String[] args) {
//make sure JavaFX run correctly
if(isFX){
System.out.println("Please run ViewerFx using java -cp jpedal.jar org.jpedal.examples.viewer.FXStartup");
System.exit(1);
}
final Viewer current = new Viewer();
current.setupViewer();
current.handleArguments(args);
}
/**
* Have the viewer handle program arguments
* @param args :: Program arguments passed into the Viewer.
*/
@Override
public void handleArguments(final String[] args){
//Ensure default open is on event thread, otherwise the display is updated as values are changing
if(SwingUtilities.isEventDispatchThread()){
if (args.length > 0){
openDefaultFile(args[0]);
}else if((properties.getValue("openLastDocument").equalsIgnoreCase("true")) &&
(properties.getRecentDocuments()!=null
&& properties.getRecentDocuments().length>1)){
int lastPageViewed = Integer.parseInt(properties.getValue("lastDocumentPage"));
if(lastPageViewed<0) {
lastPageViewed = 1;
}
openDefaultFileAtPage(properties.getRecentDocuments()[0],lastPageViewed);
}
}else{
final Runnable run = new Runnable() {
@Override
public void run() {
if (args.length > 0){
openDefaultFile(args[0]);
}else if(properties.getValue("openLastDocument").toLowerCase().equals("true")){
if(properties.getRecentDocuments()!=null
&& properties.getRecentDocuments().length>1){
int lastPageViewed = Integer.parseInt(properties.getValue("lastDocumentPage"));
if(lastPageViewed<0) {
lastPageViewed = 1;
}
openDefaultFileAtPage(properties.getRecentDocuments()[0],lastPageViewed);
}
}
}
};
SwingUtilities.invokeLater(run);
}
}
/**
* General code to open file at specified boomark - do not call directly
*
* @param file File the PDF to be decoded
* @param bookmark - if not present, exception will be thrown
*/
private void openFile(final File file, final String bookmark) {
try{
final boolean fileCanBeOpened=OpenFile.openUpFile(file.getCanonicalPath(), commonValues, searchFrame, currentGUI, decode_pdf, properties, thumbnails);
Object bookmarkPage=null;
int page=-1;
//reads tree and populates lookup table
if(decode_pdf.getOutlineAsXML()!=null){
final Node rootNode= decode_pdf.getOutlineAsXML().getFirstChild();
if(rootNode!=null) {
bookmarkPage = currentGUI.getBookmark(bookmark);
}
if(bookmarkPage!=null) {
page = Integer.parseInt((String) bookmarkPage);
}
}
//it may be a named destination ( ie bookmark=Test1)
if(bookmarkPage==null){
bookmarkPage=decode_pdf.getIO().convertNameToRef(bookmark);
if(bookmarkPage!=null){
//read the object
final PdfObject namedDest=new OutlineObject((String)bookmarkPage);
decode_pdf.getIO().readObject(namedDest);
//still needed to init viewer
if(fileCanBeOpened) {
OpenFile.processPage(commonValues, decode_pdf, currentGUI, thumbnails);
}
//and generic open Dest code
decode_pdf.getFormRenderer().getActionHandler().gotoDest(namedDest, ActionHandler.MOUSECLICKED, PdfDictionary.Dest );
}
}
if(bookmarkPage==null) {
throw new PdfException("Unknown bookmark " + bookmark);
}
if(page>-1){
commonValues.setCurrentPage(page);
if(fileCanBeOpened) {
OpenFile.processPage(commonValues, decode_pdf, currentGUI, thumbnails);
}
}
}catch(final Exception e){
System.err.println("Exception " + e + " processing file");
//
Values.setProcessing(false);
}
}
/**
* General code to open file at specified page - do not call directly
*
* @param file File the PDF to be decoded
* @param page int page number to show the user
*/
private void openFile(final File file, final int page) {
try{
final boolean fileCanBeOpened=OpenFile.openUpFile(file.getCanonicalPath(), commonValues, searchFrame, currentGUI, decode_pdf, properties, thumbnails);
commonValues.setCurrentPage(page);
if(fileCanBeOpened) {
OpenFile.processPage(commonValues, decode_pdf, currentGUI, thumbnails);
}
}catch(final Exception e){
System.err.println("Exception " + e + " processing file");
//
Values.setProcessing(false);
}
}
/**
* Execute Jpedal functionality from outside of the library using this method.
* EXAMPLES
* commandID = Commands.OPENFILE, args = {"/PDFData/Hand_Test/crbtrader.pdf}"
* commandID = Commands.OPENFILE, args = {byte[] = {0,1,1,0,1,1,1,0,0,1}, "/PDFData/Hand_Test/crbtrader.pdf}"
* commandID = Commands.ROTATION, args = {"90"}
* commandID = Commands.OPENURL, args = {"http://www.cs.bham.ac.uk/~axj/pub/papers/handy1.pdf"}
*
* for full details see http://www.idrsolutions.com/access-pdf-viewer-features-from-your-code/
*
* @param commandID :: static int value from Commands to spedify which command is wanted
* @param args :: arguements for the desired command
*
*/
@Override
@SuppressWarnings("UnusedReturnValue")
public Object executeCommand(final int commandID, final Object[] args){
/**
* far too easy to miss this step (I did!) so warn user
*/
if(!isSetup){
throw new RuntimeException("You must call viewer.setupViewer(); before you call any commands");
}
return currentCommands.executeCommand(commandID, args);
}
//
public static boolean isProcessing(){
return Values.isProcessing();
}
/**
* Allows external helper classes to be added to JPedal to alter default functionality.
*
If Options.FormsActionHandler is the type then the newHandler should be
* of the form org.jpedal.objects.acroforms.ActionHandler
*
If Options.JPedalActionHandler is the type then the newHandler should be
* of the form Map which contains Command Integers, mapped onto their respective
* org.jpedal.examples.viewer.gui.swing.JPedalActionHandler implementations. For example,
* to create a custom help action, you would add to your map, Integer(Commands.HELP) -> JPedalActionHandler.
* For a tutorial on creating custom actions in the Viewer, see
* http://www.jpedal.org/support.php
*
* @param newHandler Implementation of interface provided by IDR solutions
* @param type Defined value into org.jpedal.external.Options class
*/
@Override
public void addExternalHandler(final Object newHandler, final int type) {
decode_pdf.addExternalHandler(newHandler, type);
}
/**
* run with caution and only at end of usage if you really need
*/
@Override
public void dispose() {
commonValues=null;
currentPrinter=null;
if(thumbnails!=null) {
thumbnails.dispose();
}
thumbnails=null;
if(properties!=null) {
properties.dispose();
}
properties=null;
if(currentGUI!=null) {
currentGUI.dispose();
}
currentGUI=null;
searchFrame=null;
currentCommands=null;
if(decode_pdf!=null) {
decode_pdf.dispose();
}
decode_pdf =null;
Messages.dispose();
}
public static boolean isFX(){
return isFX;
}
}
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