org.jpedal.examples.viewer.commands.javafx.JavaFXExtractText Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of OpenViewerFX Show documentation
Show all versions of OpenViewerFX Show documentation
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
*
* ---------------
* JavaFXExtractText.java
* ---------------
*/
package org.jpedal.examples.viewer.commands.javafx;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.css.Styleable;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.stage.Modality;
import javafx.stage.Stage;
import org.jpedal.PdfDecoderInt;
import org.jpedal.examples.viewer.Values;
import org.jpedal.examples.viewer.commands.generic.GUICopy;
import org.jpedal.examples.viewer.commands.generic.GUIExtractText;
import org.jpedal.examples.viewer.gui.javafx.dialog.FXDialog;
import org.jpedal.examples.viewer.gui.javafx.dialog.FXMessageDialog;
import org.jpedal.gui.GUIFactory;
import org.jpedal.objects.PdfPageData;
import org.jpedal.utils.Messages;
/**
* Class to Handle the popup dialogs created when user right clicks
* highlighted text and chooses text extraction.
*/
public class JavaFXExtractText extends GUIExtractText {
public static void execute(final Object[] args, final GUIFactory currentGUI, final PdfDecoderInt decode_pdf, final Values commonValues) {
if (args == null) {
extractSelectedText(currentGUI, decode_pdf, commonValues);
} else {
}
}
/**
* routine to link GUI into text extraction functions
*/
private static void extractSelectedText(final GUIFactory currentGUI, final PdfDecoderInt decode_pdf, final Values commonValues) {
if (!decode_pdf.isExtractionAllowed()) {
currentGUI.showMessageDialog("Not allowed");
return;
}
final int[][] highlights = decode_pdf.getTextLines().getHighlightedAreasAs2DArray(commonValues.getCurrentPage());
if (highlights == null) {
currentGUI.showMessageDialog("There is no text selected.\nPlease highlight the text you wish to extract.", "No Text selected", FXMessageDialog.ERROR_MESSAGE);
return;
}
final BorderPane border = new BorderPane();
final FXDialog textExtractionOptions = new FXDialog((Stage)currentGUI.getFrame(), Modality.APPLICATION_MODAL, border, 300, 300);
textExtractionOptions.setTitle("Text Extraction Options");
//Set up Radiobuttons
final HBox radButtons = new HBox();
final RadioButton rectangle = new RadioButton("Rectangle");
rectangle.setId("rectangleExtraction");
final RadioButton table = new RadioButton("Table");
table.setId("tableExtraction");
final RadioButton wordList = new RadioButton("WordList");
wordList.setId("wordListExtraction");
radButtons.getChildren().addAll(rectangle, table, wordList);
table.setPadding(new Insets(0,0,0,20));
wordList.setPadding(new Insets(0,0,0,45));
border.setTop(radButtons);
//Set up Selectedtext Area
final TextArea selection = new TextArea();
border.setCenter(selection);
//Setup bottom Radio Buttons and Bottom Buttons
final VBox allBottom = new VBox();
final HBox bottomButtons = new HBox(15);
final HBox bottomRadioButtons = new HBox();
final RadioButton extractAsXML = new RadioButton("Extract as XML");
final RadioButton extractAsText = new RadioButton("Extract as Text");
final Button help = new Button("Help");
final Button cancel = new Button("Cancel");
cancel.setOnAction(new EventHandler() {
@Override
public void handle(final javafx.event.ActionEvent e) {
textExtractionOptions.close();
}
});
final Button extractButton = new Button("Extract");
extractButton.setVisible(true); //currently disabled button until window is coded.
final Region spacer = new Region();
HBox.setHgrow(spacer, Priority.ALWAYS);
bottomRadioButtons.getChildren().addAll(extractAsXML, spacer, extractAsText);
bottomButtons.setAlignment(Pos.BOTTOM_RIGHT);
bottomButtons.getChildren().addAll(help, cancel, extractButton);
allBottom.getChildren().addAll(bottomRadioButtons, bottomButtons);
extractAsXML.setPadding(new Insets(0,0,0,10));
extractAsText.setPadding(new Insets(0,10,13,0));
bottomButtons.setPadding(new Insets(0,5,10,0));
help.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
currentGUI.showMessageDialog(Messages.getMessage("PdfViewerGroupingInfo.message"));
}
});
//Add format buttons to a toggle group, so only one be selected.
final ToggleGroup formatGroup = new ToggleGroup();
rectangle.setSelected(true);
formatGroup.getToggles().addAll(rectangle, table, wordList);
final ChangeListener updateSelectionListener = new ChangeListener() {
@Override
public void changed(final ObservableValue ov,
final Toggle old_toggle, final Toggle new_toggle) {
selection.setText(updateSelection(formatGroup.getSelectedToggle(), extractAsXML.isSelected(), decode_pdf, commonValues, currentGUI));
}
};
formatGroup.selectedToggleProperty().addListener(updateSelectionListener);
//Add extraction mode to a toggle group, so only one be selected.
final ToggleGroup extractionGroup = new ToggleGroup();
extractAsText.setSelected(true);
extractionGroup.getToggles().addAll(extractAsXML, extractAsText);
extractionGroup.selectedToggleProperty().addListener(updateSelectionListener);
extractButton.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
createExtractionWindow(formatGroup.getSelectedToggle(), extractAsXML.isSelected(), decode_pdf, commonValues, currentGUI);
}
});
selection.setText(updateSelection(formatGroup.getSelectedToggle(), extractAsXML.isSelected(), decode_pdf, commonValues, currentGUI));
border.setBottom(allBottom);
BorderPane.setMargin(selection, new Insets(10,10,10,10));
BorderPane.setMargin(radButtons, new Insets(10,10,10,10));
BorderPane.setMargin(bottomRadioButtons, new Insets(10,10,10,10));
BorderPane.setMargin(bottomButtons, new Insets(10,10,10,10));
textExtractionOptions.show();
}
private static String updateSelection(final Toggle selected, final boolean isXML, final PdfDecoderInt decode_pdf, final Values commonValues, final GUIFactory currentGUI) {
StringBuilder finalValue = new StringBuilder(""); // Total data extracted so far
try {
final PdfPageData page_data = decode_pdf.getPdfPageData();
final int cropX = page_data.getCropBoxX(commonValues.getCurrentPage());
final int cropY = page_data.getCropBoxY(commonValues.getCurrentPage());
final int cropW = page_data.getCropBoxWidth(commonValues.getCurrentPage());
final int cropH = page_data.getCropBoxHeight(commonValues.getCurrentPage());
final int[][] highlights = decode_pdf.getTextLines().getHighlightedAreasAs2DArray(commonValues.getCurrentPage());
if (highlights != null) {
for (int t = 0; t != highlights.length; t++) {
String extractedText = "";
if (highlights[t] != null) {
highlights[t] = GUICopy.adjustHighlightForExtraction(highlights[t]);
int t_x1 = highlights[t][0];
int t_x2 = highlights[t][0] + highlights[t][2];
int t_y1 = highlights[t][1] + highlights[t][3];
int t_y2 = highlights[t][1];
if (t_y1 < t_y2) {
final int temp = t_y2;
t_y2 = t_y1;
t_y1 = temp;
}
if (t_x1 > t_x2) {
final int temp = t_x2;
t_x2 = t_x1;
t_x1 = temp;
}
if (t_x1 < cropX) {
t_x1 = cropX;
}
if (t_x1 > cropX + cropW) {
t_x1 = cropX + cropW;
}
if (t_x2 < cropX) {
t_x2 = cropX;
}
if (t_x2 > cropX + cropW) {
t_x2 = cropX + cropW;
}
if (t_y1 < cropY) {
t_y1 = cropY;
}
if (t_y1 > cropY + cropH) {
t_y1 = cropY + cropH;
}
if (t_y2 < cropY) {
t_y2 = cropY;
}
if (t_y2 > cropY + cropH) {
t_y2 = cropY + cropH;
}
if ("rectangleExtraction".equals(((Styleable) selected).getId())) {
//text extraction
extractedText = extractTextRectangle(commonValues, decode_pdf, currentGUI, isXML, t_x1, t_x2, t_y1, t_y2) + ((char) 0x0D) + ((char) 0x0A);
} else if ("tableExtraction".equals(((Styleable) selected).getId())) {
//text table extraction
extractedText = extractTextTable(commonValues, decode_pdf, isXML, t_x1, t_x2, t_y1, t_y2);
} else if ("wordListExtraction".equals(((Styleable) selected).getId())) {
//text wordlist extraction
extractedText = extractTextList(decode_pdf, commonValues, currentGUI, isXML, t_x1, t_x2, t_y1, t_y2);
}
finalValue.append(extractedText);
}
}
}
} catch (final Exception e) {
e.printStackTrace();
}
return finalValue.toString();
}
private static void createExtractionWindow(final Toggle selected, final boolean isXML, final PdfDecoderInt decode_pdf, final Values commonValues, final GUIFactory currentGUI) {
final Stage extractionDialog = new Stage();
final TextArea ta = new TextArea();
final Scene scene = new Scene(ta);
extractionDialog.setTitle("Extracted Text");
extractionDialog.setScene(scene);
ta.setText(updateSelection(selected, isXML, decode_pdf, commonValues, currentGUI));
extractionDialog.show();
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy