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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 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
*
* ---------------
* JavaFXMouseSelector.java
* ---------------
*/
package org.jpedal.examples.viewer.gui.javafx;
import java.io.File;
import java.util.Date;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.effect.Light.Point;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;
import javafx.stage.FileChooser;
import javafx.stage.Window;
import org.jpedal.PdfDecoderFX;
import org.jpedal.display.Display;
import org.jpedal.examples.viewer.Commands;
import org.jpedal.examples.viewer.Values;
import org.jpedal.examples.viewer.commands.generic.GUICopy;
import org.jpedal.examples.viewer.gui.GUI;
import org.jpedal.examples.viewer.gui.JavaFxGUI;
import org.jpedal.examples.viewer.gui.MouseSelector;
import org.jpedal.examples.viewer.gui.javafx.dialog.FXOptionDialog;
import org.jpedal.exception.PdfException;
import org.jpedal.external.Options;
import org.jpedal.grouping.SearchType;
import org.jpedal.gui.GUIFactory;
import org.jpedal.io.Speech;
import org.jpedal.objects.PdfPageData;
import org.jpedal.parser.DecoderOptions;
import org.jpedal.render.FXDisplay;
import org.jpedal.text.TextLines;
import org.jpedal.utils.Messages;
public class JavaFXMouseSelector extends MouseSelector implements JavaFXMouseFunctionality {
private final PdfDecoderFX decode_pdf;
private final GUIFactory currentGUI;
private final Values commonValues;
private final Commands currentCommands;
private PdfPageData page_data;
//Experimental multi page highlight flag
public static final boolean activateMultipageHighlight = true;
//Variables to keep track of multiple clicks
private int clickCount;
private long lastTime = -1;
//Find current highlighted page
private boolean startHighlighting;
/*
* ID of objects found during selection
*/
public int id = -1;
public int lastId = -1;
//used to track changes when dragging rectangle around
private int old_m_x2 = -1, old_m_y2 = -1;
//Right click options
MenuItem copy;
//======================================
MenuItem selectAll, deselectall;
//======================================
Menu extract;
MenuItem extractText, extractImage;
Image snapshotIcon;
MenuItem snapShot;
//======================================
MenuItem find;
//======================================
MenuItem speakHighlighted;
public JavaFXMouseSelector(final PdfDecoderFX decode_pdf, final GUIFactory currentGUI,
final Values commonValues, final Commands currentCommands) {
this.decode_pdf = decode_pdf;
this.currentGUI = currentGUI;
this.commonValues = commonValues;
this.currentCommands = currentCommands;
this.page_data = decode_pdf.getPdfPageData();
}
ContextMenu cm;
private void createRightClickMenu() {
/*
* Setup Items and Menus.
*/
cm = new ContextMenu();
copy = new MenuItem(Messages.getMessage("PdfRightClick.copy"));
selectAll = new MenuItem(Messages.getMessage("PdfRightClick.selectAll"));
deselectall = new MenuItem(Messages.getMessage("PdfRightClick.deselectAll"));
extract = new Menu(Messages.getMessage("PdfRightClick.extract"));
extractText = new MenuItem(Messages.getMessage("PdfRightClick.extractText"));
extractImage = new MenuItem(Messages.getMessage("PdfRightClick.extractImage"));
snapshotIcon = new Image("/org/jpedal/examples/viewer/res/snapshot_menu.gif");
snapShot = new MenuItem(Messages.getMessage("PdfRightClick.snapshot"), new ImageView(snapshotIcon));
if (GUI.debugFX) {
extract.getItems().addAll(extractText, extractImage, snapShot);
} else {
extract.getItems().addAll(extractText, extractImage);
}
find = new MenuItem(Messages.getMessage("PdfRightClick.find"));
speakHighlighted = new MenuItem("Speak Highlighted text");
/*
* Setup Menu Item Listeners.
*/
copy.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE) {
currentCommands.executeCommand(Commands.COPY, null);
} else if (GUI.showMessages) {
currentGUI.showMessageDialog("Copy is only avalible in single page display mode");
}
}
});
selectAll.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
currentCommands.executeCommand(Commands.SELECTALL, null);
}
});
deselectall.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
currentCommands.executeCommand(Commands.DESELECTALL, null);
}
});
extractText.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE) {
currentCommands.executeCommand(Commands.EXTRACTTEXT, null);
} else {
if (GUI.showMessages) {
currentGUI.showMessageDialog("Text Extraction is only avalible in single page display mode");
}
}
}
});
extractImage.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
if ((decode_pdf.getPages().getHighlightedImage() != null) &&
(decode_pdf.getDisplayView() == 1)) {
final FileChooser jf = new FileChooser();
final FileChooser.ExtensionFilter extFilterJPG = new FileChooser.ExtensionFilter("JPG (*jpg)", "*.jpg");
final FileChooser.ExtensionFilter extFilterPNG = new FileChooser.ExtensionFilter("PNG (*PNG)", "*.png");
final FileChooser.ExtensionFilter extFilterTIFF = new FileChooser.ExtensionFilter("Tiff (*TIFF)", "*.tiff");
jf.getExtensionFilters().addAll(extFilterJPG, extFilterPNG, extFilterTIFF);
final File file = jf.showSaveDialog((Window) currentGUI.getFrame());
String fileExt = file.getName();
fileExt = fileExt.substring(fileExt.indexOf('.') + 1, fileExt.length());
final FXDisplay fxRenderer = (FXDisplay) decode_pdf.getDynamicRenderer();
fxRenderer.saveImage(id, file.getAbsolutePath(), fileExt);
}
}
});
snapShot.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
currentCommands.executeCommand(Commands.SNAPSHOT, null);
}
});
find.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
/*
* ensure co-ords in right order
*/
final int[] coords = decode_pdf.getPages().getCursorBoxOnScreenAsArray();
if (coords == null) {
if (GUI.showMessages) {
currentGUI.showMessageDialog("There is no text selected.\nPlease highlight the text you wish to search.", "No Text selected", FXOptionDialog.ERROR_MESSAGE);
}
return;
}
final String textToFind = currentGUI.showInputDialog(Messages.getMessage("PdfViewerMessage.GetUserInput"));
//if cancel return to menu.
if (textToFind == null || textToFind.length() < 1) {
//textToFind=null;
return;
}
//Modify coords to ensure fully encompassing highlighted text
final int yMod = 2;
//int xMod = 2;
int t_x1 = coords[0];
int t_x2 = coords[0] + coords[2];
int t_y1 = coords[1] - yMod;
int t_y2 = coords[1] + coords[3] + yMod;
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;
}
page_data = decode_pdf.getPdfPageData();
final int cropX = page_data.getCropBoxX(commonValues.getCurrentPage());
final int cropY = page_data.getCropBoxY(commonValues.getCurrentPage());
final int mediaW = page_data.getMediaBoxWidth(commonValues.getCurrentPage());
final int mediaH = page_data.getMediaBoxHeight(commonValues.getCurrentPage());
if (t_x1 < cropX) {
t_x1 = cropX;
}
if (t_x1 > mediaW - cropX) {
t_x1 = mediaW - cropX;
}
if (t_x2 < cropX) {
t_x2 = cropX;
}
if (t_x2 > mediaW - cropX) {
t_x2 = mediaW - cropX;
}
if (t_y1 < cropY) {
t_y1 = cropY;
}
if (t_y1 > mediaH - cropY) {
t_y1 = mediaH - cropY;
}
if (t_y2 < cropY) {
t_y2 = cropY;
}
if (t_y2 > mediaH - cropY) {
t_y2 = mediaH - cropY;
}
int searchType = SearchType.DEFAULT;
final int caseSensitiveOption = currentGUI.showConfirmDialog(Messages.getMessage("PdfViewercase.message"),
null, FXOptionDialog.YES_NO_OPTION);
if (caseSensitiveOption == FXOptionDialog.YES_OPTION) {
searchType |= SearchType.CASE_SENSITIVE;
}
final int findAllOption = currentGUI.showConfirmDialog(Messages.getMessage("PdfViewerfindAll.message"),
null, FXOptionDialog.YES_NO_OPTION);
if (findAllOption == FXOptionDialog.NO_OPTION) {
searchType |= SearchType.FIND_FIRST_OCCURANCE_ONLY;
}
final int hyphenOption = currentGUI.showConfirmDialog(Messages.getMessage("PdfViewerfindHyphen.message"),
null, FXOptionDialog.YES_NO_OPTION);
if (hyphenOption == FXOptionDialog.YES_OPTION) {
searchType |= SearchType.MUTLI_LINE_RESULTS;
}
try {
final float[] co_ords;
co_ords = decode_pdf.getGroupingObject().findText(t_x1, t_y1, t_x2, t_y2, new String[]{textToFind}, searchType);
if (co_ords.length >= 2) {
if (co_ords.length < 3) {
currentGUI.showMessageDialog(Messages.getMessage("PdfViewerMessage.Found") + ' ' + co_ords[0] + ',' + co_ords[1]);
} else {
final StringBuilder displayCoords = new StringBuilder();
String coordsMessage = Messages.getMessage("PdfViewerMessage.FoundAt");
for (int i = 0; i < co_ords.length; i += 5) {
displayCoords.append(coordsMessage).append(' ');
displayCoords.append(co_ords[i]);
displayCoords.append(',');
displayCoords.append(co_ords[i + 1]);
displayCoords.append('\n');
if (co_ords[i + 4] == -101) {
coordsMessage = Messages.getMessage("PdfViewerMessage.FoundAtHyphen");
} else {
coordsMessage = Messages.getMessage("PdfViewerMessage.FoundAt");
}
}
currentGUI.showMessageDialog(displayCoords.toString());
}
} else {
currentGUI.showMessageDialog(Messages.getMessage("PdfViewerMessage.NotFound"));
}
} catch (final PdfException e1) {
e1.printStackTrace();
}
}
});
final Speech speech = (Speech) decode_pdf.getExternalHandler(Options.SpeechEngine);
final boolean useSpeech = speech != null;
if (useSpeech) {
//option = option.substring(0, option.indexOf('('));
speech.setVoice(currentGUI.getProperties().getValue("voice"));
}
speakHighlighted.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
if (useSpeech) {
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE) {
final Thread speak = new Thread(new Runnable() {
@Override
public void run() {
final String text = GUICopy.copySelectedText(decode_pdf, currentGUI, commonValues);
speech.speakText(text);
}
});
speak.setDaemon(true);
speak.start();
} else {
if (GUI.showMessages) {
currentGUI.showMessageDialog("Speak text is only avalible in single page display mode");
}
}
}
}
});
/*
* Add Items to Main Menu.
*/
if (decode_pdf != null && decode_pdf.isOpen()) {
if (GUI.debugFX) {
cm.getItems().add(copy);
cm.getItems().addAll(new SeparatorMenuItem(), selectAll, deselectall);
cm.getItems().addAll(new SeparatorMenuItem(), extract);
cm.getItems().addAll(new SeparatorMenuItem(), find);
cm.getItems().addAll(new SeparatorMenuItem(), speakHighlighted);
} else {
cm.getItems().add(copy);
cm.getItems().addAll(new SeparatorMenuItem(), selectAll, deselectall);
cm.getItems().addAll(new SeparatorMenuItem(), extract);
//cm.getItems().addAll(new SeparatorMenuItem(),find);
//cm.getItems().addAll(new SeparatorMenuItem(),speakHighlighted);
}
}
}
@Override
public void mouseClicked(final MouseEvent e) {
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE || (activateMultipageHighlight && decode_pdf.getDisplayView() == Display.CONTINUOUS && decode_pdf.getDisplayView() == Display.CONTINUOUS_FACING)) {
final long currentTime = new Date().getTime();
if (lastTime + 500 < currentTime) {
clickCount = 0;
}
lastTime = currentTime;
if (isOtherKey(e)) {
//Single mode actions
if (clickCount != 4) {
clickCount++;
}
final int pagenumber = decode_pdf.getPageNumber();
this.page_data = decode_pdf.getPdfPageData();
final int crx = page_data.getCropBoxX(pagenumber);
final int cry = page_data.getCropBoxY(pagenumber);
commonValues.m_x1 = (int) e.getX() + crx;
commonValues.m_y1 = (int) e.getY() + cry;
final FXDisplay fxRenderer = (FXDisplay) decode_pdf.getDynamicRenderer();
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE) {
id = fxRenderer.isInsideImage(commonValues.m_x1, commonValues.m_y1);
} else {
id = -1;
}
if (lastId != id && id != -1) {
final int[] imageArea = fxRenderer.getAreaAsArray(id);
if (imageArea != null) {
int h = imageArea[3];
int w = imageArea[2];
int x = imageArea[0];
int y = imageArea[1];
fxRenderer.setneedsHorizontalInvert(false);
fxRenderer.setneedsVerticalInvert(false);
// Check for negative values
if (w < 0) {
fxRenderer.setneedsHorizontalInvert(true);
w = -w;
x -= w;
}
if (h < 0) {
fxRenderer.setneedsVerticalInvert(true);
h = -h;
y -= h;
}
decode_pdf.getPages().setHighlightedImage(new int[]{x, y, w, h});
}
lastId = id;
} else {
decode_pdf.getPages().setHighlightedImage(null);
lastId = -1;
}
if ((id == -1) && (clickCount > 1)) {
switch (clickCount) {
case 1: //single click adds caret to page
/*
* Does nothing yet. IF above prevents this case
* from ever happening Add Caret code here and
* add shift click code for selection. Also
* remember to comment out "if(clickCount>1)"
* from around this switch to activate
*/
break;
case 2: //double click selects line
final int[][] lineAreas = decode_pdf.getTextLines().getLineAreasAs2DArray(commonValues.getCurrentPage());
if (lineAreas != null) { //Null is page has no lines
final int[] point = {commonValues.m_x1, commonValues.m_y1, 1, 1};
for (int i = 0; i != lineAreas.length; i++) {
if (TextLines.intersects(point, lineAreas[i])) {
decode_pdf.updateCursorBoxOnScreen(lineAreas[i], DecoderOptions.highlightColor.getRGB());
decode_pdf.getTextLines().addHighlights(new int[][]{lineAreas[i]}, false, commonValues.getCurrentPage());
}
}
}
break;
case 3: //triple click selects paragraph
final int[] para = decode_pdf.getTextLines().setFoundParagraphAsArray(commonValues.m_x1, commonValues.m_y1, commonValues.getCurrentPage());
if (para != null) {
decode_pdf.updateCursorBoxOnScreen(para, DecoderOptions.highlightColor.getRGB());
}
break;
case 4: //quad click selects page
currentCommands.executeCommand(Commands.SELECTALL, null);
break;
}
}
decode_pdf.repaintPane(commonValues.getCurrentPage());
}
}
}
@Override
public void mouseEntered(final MouseEvent e) {
//Stub
}
@Override
public void mouseExited(final MouseEvent e) {
//Stub
}
@Override
public void mousePressed(final MouseEvent e) {
if ((decode_pdf.getDisplayView() == Display.SINGLE_PAGE || (activateMultipageHighlight && decode_pdf.getDisplayView() == Display.CONTINUOUS && decode_pdf.getDisplayView() == Display.CONTINUOUS_FACING))
&& (isOtherKey(e))) {
/*
* remove any outline and reset variables used to track change
*/
decode_pdf.updateCursorBoxOnScreen(null, 0); //remove box
decode_pdf.getPages().setHighlightedImage(null); // remove image highlight
decode_pdf.getTextLines().clearHighlights();
//Remove focus from form is if anywhere on pdf panel is clicked / mouse dragged
decode_pdf.requestFocus();
//Point values = getCoordsOnPage(e.getX(), e.getY(), commonValues.getCurrentPage());
final int pagenumber = decode_pdf.getPageNumber();
this.page_data = decode_pdf.getPdfPageData();
final int crx = page_data.getCropBoxX(pagenumber);
final int cry = page_data.getCropBoxY(pagenumber);
commonValues.m_x1 = (int) e.getX() + crx;
commonValues.m_y1 = (int) e.getY() + cry;
final int[][] rectParams = decode_pdf.getTextLines().getHighlightedAreasAs2DArray(commonValues.getCurrentPage());
if (rectParams != null && rectParams.length > 0) {
decode_pdf.getPages().refreshDisplay();
}
}
}
@Override
public void mouseReleased(final MouseEvent e) {
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE || (activateMultipageHighlight && decode_pdf.getDisplayView() == Display.CONTINUOUS && decode_pdf.getDisplayView() == Display.CONTINUOUS_FACING)) {
if (cm != null && cm.isShowing()) {
cm.hide();
}
if (isOtherKey(e)) {
//If we have been highlighting, stop now and reset all flags
if (startHighlighting) {
decode_pdf.setCursor(Cursor.DEFAULT);
startHighlighting = false;
}
this.page_data = decode_pdf.getPdfPageData();
if (currentCommands.extractingAsImage) {
/*
* remove any outline and reset variables used to track
* change
*/
decode_pdf.updateCursorBoxOnScreen(null, 0); //remove box
decode_pdf.getTextLines().clearHighlights(); //remove highlighted text
decode_pdf.getPages().setHighlightedImage(null); // remove image highlight
decode_pdf.setCursor(Cursor.DEFAULT);
currentCommands.executeCommand(Commands.EXTRACTASIMAGE, null);
currentCommands.extractingAsImage = false;
DecoderOptions.showMouseBox = false;
}
} else if ((e.getButton().equals(MouseButton.SECONDARY)) &&
(currentGUI.getProperties().getValue("allowRightClick").toLowerCase().equals("true"))) {
if (cm == null) {
createRightClickMenu();
}
cm.show(((JavaFxGUI) currentGUI).getRoot(), e.getScreenX(), e.getScreenY());
if (decode_pdf.getPages().getHighlightedImage() == null) {
extractImage.setDisable(true);
} else {
extractImage.setDisable(false);
}
if (decode_pdf.getTextLines().getHighlightedAreasAs2DArray(commonValues.getCurrentPage()) == null) {
extractText.setDisable(true);
find.setDisable(true);
speakHighlighted.setDisable(true);
copy.setDisable(true);
} else {
extractText.setDisable(false);
find.setDisable(false);
speakHighlighted.setDisable(false);
copy.setDisable(false);
}
}
}
}
@Override
public void mouseDragged(final MouseEvent e) {
if (isOtherKey(e)) {
if (!startHighlighting) {
startHighlighting = true;
}
//Point values = getCoordsOnPage(e.getX(), e.getY(), commonValues.getCurrentPage());
// Adjust to center of decode_pdf
final int pagenumber = decode_pdf.getPageNumber();
final int crx = decode_pdf.getPdfPageData().getCropBoxX(pagenumber);
final int cry = decode_pdf.getPdfPageData().getCropBoxY(pagenumber);
commonValues.m_x2 = (int) e.getX() + crx;
commonValues.m_y2 = (int) e.getY() + cry;
if (commonValues.isPDF()) {
decode_pdf.setCursor(Cursor.TEXT);
generateNewCursorBox();
}
}
}
@Override
public void mouseMoved(final MouseEvent e) {
//Stub
}
/**
* Find and updates coords for the current page
*
* @param x :: The x coordinate of the cursors location in display area coordinates
* @param y :: The y coordinate of the cursors location in display area coordinates
* @param page :: The page we are currently on
* @return Point object of the cursor location in page coordinates
*/
@SuppressWarnings("MethodMayBeStatic")
public Point getCoordsOnPage(final double x, final double y, final int page) {
//Update cursor position if over page
throw new UnsupportedOperationException("We do not currently use this method for JavaFX as it appears the X and Y coords\n" +
" can be retrieved from the bottom left in JavaFX compared to the top left in Swing " + x + " " + y + " " + page);
}
/**
* Checks to see whether the primary mouse button or any other key that
* is not the secondary mouse button or the middle mouse button is pressed,
* if it is then return true, otherwise return false.
*
* @param e
* @return
*/
private static boolean isOtherKey(final MouseEvent e) {
return e.getButton().equals(MouseButton.PRIMARY) || e.getButton().equals(MouseButton.NONE);
}
/**
* generate new cursorBox and highlight extractable text,
* if hardware acceleration off and extraction on
* and update current cursor box displayed on screen
*/
protected void generateNewCursorBox() {
//redraw rectangle of dragged box onscreen if it has changed significantly
if ((old_m_x2 != -1) || (old_m_y2 != -1) || (Math.abs(commonValues.m_x2 - old_m_x2) > 5) || (Math.abs(commonValues.m_y2 - old_m_y2) > 5)) {
//allow for user to go up
int top_x = commonValues.m_x1;
if (commonValues.m_x1 > commonValues.m_x2) {
top_x = commonValues.m_x2;
}
int top_y = commonValues.m_y1;
if (commonValues.m_y1 > commonValues.m_y2) {
top_y = commonValues.m_y2;
}
final int w = Math.abs(commonValues.m_x2 - commonValues.m_x1);
final int h = Math.abs(commonValues.m_y2 - commonValues.m_y1);
//add an outline rectangle to the display
final int[] currentRectangle = {top_x, top_y, w, h};
//tell JPedal to highlight text in this area (you can add other areas to array)
decode_pdf.updateCursorBoxOnScreen(currentRectangle, DecoderOptions.highlightColor.getRGB());
if (!currentCommands.extractingAsImage) {
final int[] r = {commonValues.m_x1, commonValues.m_y1, commonValues.m_x2 - commonValues.m_x1, commonValues.m_y2 - commonValues.m_y1};
decode_pdf.getTextLines().addHighlights(new int[][]{r}, false, commonValues.getCurrentPage());
}
//reset tracking
old_m_x2 = commonValues.m_x2;
old_m_y2 = commonValues.m_y2;
}
decode_pdf.repaintPane(commonValues.getCurrentPage());
}
}
