org.jpedal.examples.viewer.gui.javafx.JavaFXMousePageTurn Maven / Gradle / Ivy
/*
* ===========================================
* 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
*
* ---------------
* JavaFXMousePageTurn.java
* ---------------
*/
package org.jpedal.examples.viewer.gui.javafx;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import javafx.application.Platform;
import javafx.scene.Cursor;
import javafx.scene.control.ScrollPane;
import javafx.scene.effect.Light.Point;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.ScrollEvent;
import org.jpedal.PdfDecoderFX;
import org.jpedal.display.Display;
import org.jpedal.display.DisplayOffsets;
import org.jpedal.examples.viewer.Commands;
import org.jpedal.examples.viewer.Values;
import org.jpedal.examples.viewer.commands.javafx.JavaFXPageNavigator;
import org.jpedal.examples.viewer.gui.GUI;
import org.jpedal.examples.viewer.gui.JavaFxGUI;
import org.jpedal.examples.viewer.gui.MouseSelector;
import org.jpedal.external.AnnotationHandler;
import org.jpedal.external.Options;
import org.jpedal.gui.GUIFactory;
import org.jpedal.io.PdfObjectReader;
import org.jpedal.utils.LogWriter;
public class JavaFXMousePageTurn extends MouseSelector implements JavaFXMouseFunctionality {
private final PdfDecoderFX decode_pdf;
private final GUIFactory currentGUI;
private final Values commonValues;
private final Commands currentCommands;
private long lastPress;
/**
* allow turning page to be drawn
*/
private boolean drawingTurnover;
/**
* show turning page when hovering over corner
*/
private boolean previewTurnover;
/**
* middle drag panning values
*/
private double middleDragStartX, middleDragStartY, xVelocity, yVelocity;
private Timer middleDragTimer;
long timeOfLastPageChange;
DisplayOffsets offsets;
public JavaFXMousePageTurn(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;
offsets=(DisplayOffsets) decode_pdf.getExternalHandler(Options.DisplayOffsets);
}
/**
* checks the link areas on the page and allow user to save file
*
*/
public void checkLinks(final boolean mouseClicked, final PdfObjectReader pdfObjectReader, final double x, final double y) {
//get 'hotspots' for the page
final Map objs = currentGUI.getHotspots();
//look for a match and call code
if (objs != null) {
((AnnotationHandler) decode_pdf.getExternalHandler(Options.UniqueAnnotationHandler)).checkLinks(objs, mouseClicked, pdfObjectReader, (int) x, (int) y, currentGUI, commonValues);
}
}
@Override
public void mouseClicked(final MouseEvent e) {
if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE
&& e.getButton().equals(MouseButton.PRIMARY)
&& decode_pdf.getExternalHandler(Options.UniqueAnnotationHandler) != null) {
final double mouseX = e.getX();
final double mouseY = e.getY();
final int[] pos = updateXY((int)mouseX, (int)mouseY, decode_pdf, commonValues);
checkLinks(true, decode_pdf.getIO(), pos[0], pos[1]);
}
}
@Override
public void mouseEntered(final MouseEvent e) {
//Stub
}
@Override
public void mouseExited(final MouseEvent e) {
//Stub
}
@Override
public void mousePressed(final MouseEvent e) {
//Activate turnover if pressed while preview on
if (previewTurnover && decode_pdf.getPages().getBoolean(Display.BoolValue.TURNOVER_ON) && decode_pdf.getDisplayView() == Display.FACING
&& e.getButton().equals(MouseButton.PRIMARY)) {
drawingTurnover = true;
//set cursor
decode_pdf.setCursor(Cursor.CLOSED_HAND);
lastPress = System.currentTimeMillis();
}
//Start dragging
if (e.getButton().equals(MouseButton.SECONDARY)) {
middleDragStartX = e.getX() - decode_pdf.getLayoutX();
middleDragStartY = e.getY() - decode_pdf.getLayoutY();
decode_pdf.setCursor(Cursor.MOVE);
//set up timer to refresh display
if (middleDragTimer == null) {
middleDragTimer = new Timer();
}
middleDragTimer.schedule(new TimerTask() {
@Override
public void run() {
Platform.runLater(new Runnable() {
@Override
public void run() {
if (xVelocity < -2) {
if (yVelocity < -2) {
decode_pdf.setCursor(Cursor.NW_RESIZE);
} else if (yVelocity > 2) {
decode_pdf.setCursor(Cursor.SW_RESIZE);
} else {
decode_pdf.setCursor(Cursor.E_RESIZE);
}
} else if (xVelocity > 2) {
if (yVelocity < -2) {
decode_pdf.setCursor(Cursor.NE_RESIZE);
} else if (yVelocity > 2) {
decode_pdf.setCursor(Cursor.SE_RESIZE);
} else {
decode_pdf.setCursor(Cursor.E_RESIZE);
}
} else {
if (yVelocity < -2) {
decode_pdf.setCursor(Cursor.N_RESIZE);
} else if (yVelocity > 2) {
decode_pdf.setCursor(Cursor.S_RESIZE);
} else {
decode_pdf.setCursor(Cursor.MOVE);
}
}
}
});
}
}, 100);
//middleDragTimer.start();
}
}
@Override
public void mouseReleased(final MouseEvent e) {
//Stop drawing turnover
if (decode_pdf.getPages().getBoolean(Display.BoolValue.TURNOVER_ON) && decode_pdf.getDisplayView() == Display.FACING) {
drawingTurnover = false;
final boolean dragLeft = offsets.getDragLeft();
final boolean dragTop = offsets.getDragTop();
if (lastPress + 200 > System.currentTimeMillis()) {
if (dragLeft) {
currentCommands.executeCommand(Commands.BACKPAGE, null);
} else {
currentCommands.executeCommand(Commands.FORWARDPAGE, null);
}
previewTurnover = false;
decode_pdf.setCursor(Cursor.DEFAULT);
} else {
//Trigger fall
final Point corner = new Point();
corner.setY(decode_pdf.getInsetH());
if (!dragTop) {
corner.setY(corner.getY() + (decode_pdf.getPdfPageData().getCropBoxHeight(1) * decode_pdf.getScaling()));
}
if (dragLeft) {
corner.setX((decode_pdf.getBoundsInLocal().getWidth() / 2) - (decode_pdf.getPdfPageData().getCropBoxWidth(1) * decode_pdf.getScaling()));
} else {
corner.setX((decode_pdf.getBoundsInLocal().getWidth() / 2) + (decode_pdf.getPdfPageData().getCropBoxWidth(1) * decode_pdf.getScaling()));
}
final Point cursorPoint = new Point();
cursorPoint.setX(e.getX());
cursorPoint.setY(e.getY());
testFall(corner, cursorPoint, dragLeft);
}
}
//stop middle click panning
if (e.getButton().equals(MouseButton.SECONDARY)) {
xVelocity = 0;
yVelocity = 0;
decode_pdf.setCursor(Cursor.DEFAULT);
middleDragTimer.cancel();
}
}
@Override
public void mouseDragged(final MouseEvent e) {
if (e.getButton().equals(MouseButton.PRIMARY)) {
if (decode_pdf.getExternalHandler(Options.UniqueAnnotationHandler) != null) {
final int[] pos = updateXY((int)e.getX(), (int)e.getY(), decode_pdf, commonValues);
checkLinks(true, decode_pdf.getIO(), pos[0], pos[1]);
}
//update mouse coords for turnover
if (decode_pdf.getPages().getBoolean(Display.BoolValue.TURNOVER_ON) && (drawingTurnover || previewTurnover) && decode_pdf.getDisplayView() == Display.FACING) {
decode_pdf.setCursor(Cursor.CLOSED_HAND);
//update coords
if (offsets.getDragLeft()) {
if (offsets.getDragTop()) {
decode_pdf.setUserOffsets((int) e.getX(), (int) e.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_LEFT);
} else {
decode_pdf.setUserOffsets((int) e.getX(), (int) e.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_LEFT);
}
} else {
if (offsets.getDragTop()) {
decode_pdf.setUserOffsets((int) e.getX(), (int) e.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_RIGHT);
} else {
decode_pdf.setUserOffsets((int) e.getX(), (int) e.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_RIGHT);
}
}
}
} else if (e.getButton().equals(MouseButton.MIDDLE)) {
//middle drag - update velocity
xVelocity = ((e.getX() - decode_pdf.getLayoutX()) - middleDragStartX) / 4;
yVelocity = ((e.getY() - decode_pdf.getLayoutY()) - middleDragStartY) / 4;
}
}
@Override
public void mouseMoved(final MouseEvent e) {
if (decode_pdf.getDisplayView() == Display.FACING
&& decode_pdf.getPages().getBoolean(Display.BoolValue.TURNOVER_ON)
&& ((JavaFxGUI) decode_pdf.getExternalHandler(Options.GUIContainer)).getPageTurnScalingAppropriate()
&& !decode_pdf.getPdfPageData().hasMultipleSizes()
&& !JavaFXPageNavigator.getPageTurnAnimating()) {
//show preview turnover
//get width and height of page
float pageH = (decode_pdf.getPdfPageData().getCropBoxHeight(1) * decode_pdf.getScaling()) - 1;
float pageW = (decode_pdf.getPdfPageData().getCropBoxWidth(1) * decode_pdf.getScaling()) - 1;
if ((decode_pdf.getPdfPageData().getRotation(1) + currentGUI.getRotation()) % 180 == 90) {
final float temp = pageH;
pageH = pageW + 1;
pageW = temp;
}
final Point corner = new Point();
//right turnover
if (commonValues.getCurrentPage() + 1 < commonValues.getPageCount()) {
corner.setX((decode_pdf.getBoundsInLocal().getWidth() / 2) + pageW);
corner.setY(decode_pdf.getInsetH() + pageH);
final Point cursor = new Point();
cursor.setX(e.getX());
cursor.setY(e.getY());
if (cursor.getX() > corner.getX() - 30 && cursor.getX() <= corner.getX()
&& ((cursor.getY()) > corner.getY() - 30 && cursor.getY() <= corner.getY())
|| (cursor.getY() >= corner.getY() - pageH && cursor.getY() < corner.getY() - pageH + 30)) {
//if close enough display preview turnover
//set cursor
decode_pdf.setCursor(Cursor.OPEN_HAND);
previewTurnover = true;
if (cursor.getY() >= corner.getY() - pageH && cursor.getY() < corner.getY() - pageH + 30) {
corner.setY(corner.getY() - pageH);
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_RIGHT);
} else {
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_RIGHT);
}
} else {
if (offsets.getDragTop()) {
corner.setY(corner.getY() - pageH);
}
testFall(corner, cursor, false);
}
}
//left turnover
if (commonValues.getCurrentPage() != 1) {
corner.setX((decode_pdf.getBoundsInLocal().getWidth() / 2) - pageW);
corner.setY(decode_pdf.getInsetH() + pageH);
final Point cursor = new Point();
cursor.setX(e.getX());
cursor.setY(e.getY());
if (cursor.getX() < corner.getX() + 30 && cursor.getX() >= corner.getX()
&& ((cursor.getY() > corner.getY() - 30 && cursor.getY() <= corner.getY())
|| (cursor.getY() >= corner.getY() - pageH && cursor.getY() < corner.getY() - pageH + 30))) {
//if close enough display preview turnover
// System.out.println("drawing left live "+decode_pdf.drawLeft);
//set cursor
decode_pdf.setCursor(Cursor.OPEN_HAND);
previewTurnover = true;
if (cursor.getY() >= corner.getY() - pageH && cursor.getY() < corner.getY() - pageH + 30) {
corner.setX(corner.getY() - pageH);
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_LEFT);
} else {
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_LEFT);
}
} else {
if (offsets.getDragTop()) {
corner.setY(corner.getY() - pageH);
}
testFall(corner, cursor, true);
}
}
}
//Update cursor position if over page in single mode
//
// int[] flag = new int[2];
// flag[0] = SwingGUI.CURSOR;
//
// if (decode_pdf.getDisplayView() == Display.SINGLE_PAGE || (SwingMouseSelector.activateMultipageHighlight && decode_pdf.getDisplayView()==Display.CONTINUOUS && decode_pdf.getDisplayView()==Display.CONTINUOUS_FACING)) {
// //get raw w and h
// int rawW,rawH;
// if (currentGUI.getRotation()%180==90) {
// rawW = decode_pdf.getPdfPageData().getCropBoxHeight(1);
// rawH = decode_pdf.getPdfPageData().getCropBoxWidth(1);
// } else {
// rawW = decode_pdf.getPdfPageData().getCropBoxWidth(1);
// rawH = decode_pdf.getPdfPageData().getCropBoxHeight(1);
// }
//
// Point p = event.getPoint();
// int x = (int)p.getX();
// int y = (int)p.getY();
//
// float scaling = decode_pdf.getScaling();
//
// double pageHeight = scaling*rawH;
// double pageWidth = scaling*rawW;
// int yStart = decode_pdf.getInsetH();
//
// //move so relative to center
// double left = (decode_pdf.getWidth()/2) - (pageWidth/2);
// double right = (decode_pdf.getWidth()/2) + (pageWidth/2);
//
// if(decode_pdf.getDisplayView()==Display.FACING){
// left = (decode_pdf.getWidth()/2);
// if(decode_pdf.getPageNumber()!=1 || decode_pdf.getPageCount()==2)
// left -= (pageWidth);
//
// right = (decode_pdf.getWidth()/2) + (pageWidth);
// }
//
// if (x >= left && x <= right &&
// y >= yStart && y <= yStart + pageHeight)
// //set displayed
// flag[1] = 1;
// else
// //set not displayed
// flag[1] = 0;
//
//
// } else {
// //set not displayed
// flag[1] = 0;
// }
// currentGUI.setMultibox(flag);
if (decode_pdf.getExternalHandler(Options.UniqueAnnotationHandler) != null) {
final int[] pos = updateXY((int)e.getX(), (int)e.getY(), decode_pdf, commonValues);
checkLinks(false, decode_pdf.getIO(), pos[0], pos[1]);
}
}
public void mouseWheelMoved(final ScrollEvent e){
if(decode_pdf.getDisplayView() == Display.PAGEFLOW) {
return;
}
if(currentGUI.getProperties().getValue("allowScrollwheelZoom").equalsIgnoreCase("true") && e.isControlDown()){
//zoom
int scaling = ((GUI)currentGUI).getSelectedComboIndex(Commands.SCALING);
if(scaling!=-1){
scaling = (int)decode_pdf.getDPIFactory().removeScaling(decode_pdf.getScaling()*100);
}else{
String numberValue = ((GUI)currentGUI).getSelectedComboItem(Commands.SCALING).toString();
try{
scaling= (int)Float.parseFloat(numberValue);
}catch(final Exception ex){
if(LogWriter.isOutput()) {
LogWriter.writeLog("Exception in handling scaling "+ex);
}
scaling=-1;
//its got characters in it so get first valid number string
final int length=numberValue.length();
int ii=0;
while(ii='0')&&(c<='9'))|(c=='.')) {
ii++;
} else {
break;
}
}
if(ii>0) {
numberValue = numberValue.substring(0, ii);
}
//try again if we reset above
if(scaling==-1){
try{
scaling = (int)Float.parseFloat(numberValue);
}catch(final Exception e1){
if(LogWriter.isOutput()) {
LogWriter.writeLog("Exception in handling scaling "+e1);
}
scaling=-1;
}
}
}
}
float value = e.getTouchCount();
if(scaling!=1 || value<0){
if(value<0){
value = 1.25f;
}else{
value = 0.8f;
}
if(!(scaling+value<0)){
float currentScaling = (scaling*value);
if(((int)currentScaling)==(scaling)) {
currentScaling = scaling + 1;
} else {
currentScaling = ((int) currentScaling);
}
if(currentScaling<1) {
currentScaling = 1;
}
if(currentScaling>1000) {
currentScaling = 1000;
}
//update scaling
currentGUI.snapScalingToDefaults(currentScaling);
/**
* Do not think this is necersary for JavaFX Viewer as the PdfDecoder is set into a ScrollPane
* which handles scrollable view.
//store mouse location
final Rectangle r = ((PdfDecoder)decode_pdf).getVisibleRect();
final double x = event.getX()/((PdfDecoder)decode_pdf).getBounds().getWidth();
final double y = event.getY()/((PdfDecoder)decode_pdf).getBounds().getHeight();
Thread t = new Thread() {
@Override
public void run() {
try {
((PdfDecoder)decode_pdf).scrollRectToVisible(new Rectangle(
(int)((x*((PdfDecoderFX)decode_pdf).getWidth())-(r.getWidth()/2)),
(int)((y*((PdfDecoderFX)decode_pdf).getHeight())-(r.getHeight()/2)),
(int)((PdfDecoder)decode_pdf).getVisibleRect().getWidth(),
(int)((PdfDecoder)decode_pdf).getVisibleRect().getHeight()));
((PdfDecoder)decode_pdf).repaint();
} catch (Exception e) {e.printStackTrace();}
}
};
t.setDaemon(true);
t.start();
SwingUtilities.invokeLater(t);*/
}
}
} else {
final ScrollPane scroll = ((ScrollPane)decode_pdf.getParent());
if ((scroll.getVvalue()==scroll.getVmax()-scroll.getHeight() || scroll.getHeight()==0) &&
timeOfLastPageChange+700 < System.currentTimeMillis() &&
currentGUI.getValues().getCurrentPage() < decode_pdf.getPageCount()) {
//change page
timeOfLastPageChange = System.currentTimeMillis();
currentCommands.executeCommand(Commands.FORWARDPAGE, null);
//update scrollbar so at top of page
Platform.runLater(new Runnable() {
@Override
public void run() {
scroll.setVvalue(scroll.getVmin());
}
});
} else if (scroll.getVvalue()==scroll.getVmin() &&
timeOfLastPageChange+700 < System.currentTimeMillis() &&
currentGUI.getValues().getCurrentPage() > 1) {
//change page
timeOfLastPageChange = System.currentTimeMillis();
currentCommands.executeCommand(Commands.BACKPAGE, null);
//update scrollbar so at bottom of page
Platform.runLater(new Runnable() {
@Override
public void run() {
scroll.setVvalue(scroll.getVmax());
}
});
}
/**
* We do not think this is necersary as the PDFContent is hosted within a ScrollPane
* so scrolling is done for us.
else {
//scroll
Area rect = new Area(((PdfDecoderFX)decode_pdf).getVisibleRect());
AffineTransform transform = new AffineTransform();
transform.translate(0, event.getUnitsToScroll() * decode_pdf.getScrollInterval());
rect = rect.createTransformedArea(transform);
((PdfDecoder)decode_pdf).scrollRectToVisible(rect.getBounds());
}*/
}
}
private void testFall(final Point corner, final Point cursor, final boolean testLeft) {
if (!previewTurnover) {
return;
}
float width = (decode_pdf.getPdfPageData().getCropBoxWidth(1) * decode_pdf.getScaling()) - 1;
if ((decode_pdf.getPdfPageData().getRotation(1) + currentGUI.getRotation()) % 180 == 90) {
width = decode_pdf.getPdfPageData().getCropBoxHeight(1) * decode_pdf.getScaling();
}
final float pageW = width;
if (!testLeft) {
if (!offsets.getDragLeft()) {
//reset cursor
decode_pdf.setCursor(Cursor.DEFAULT);
//If previously displaying turnover, animate to corner
final Thread animation = new Thread() {
@Override
public void run() {
corner.setX((decode_pdf.getBoundsInLocal().getWidth() / 2) + pageW);
//work out if page change needed
boolean fallBack = true;
if (cursor.getX() < corner.getX() - pageW) {
corner.setX((corner.getX() - (2 * pageW)));
fallBack = false;
}
// Fall animation
int velocity = 1;
//ensure cursor is not outside expected range
if (fallBack && cursor.getX() >= corner.getX()) {
cursor.setX(corner.getX() - 1);
}
if (!fallBack && cursor.getX() <= corner.getX()) {
cursor.setX(corner.getX() + 1);
}
if (!offsets.getDragTop() && cursor.getY() >= corner.getY()) {
cursor.setY(corner.getY() - 1);
}
if (offsets.getDragTop() && cursor.getY() <= corner.getY()) {
cursor.setY(corner.getY() + 1);
}
//Calculate distance required
final double distX = (corner.getX() - cursor.getX());
final double distY = (corner.getY() - cursor.getY());
//Loop through animation
while ((fallBack && cursor.getX() <= corner.getX())
|| (!fallBack && cursor.getX() >= corner.getX())
|| (!offsets.getDragTop() && cursor.getY() <= corner.getY())
|| (offsets.getDragTop() && cursor.getY() >= corner.getY())) {
//amount to move this time
double xMove = velocity * distX * 0.002;
double yMove = velocity * distY * 0.002;
//make sure always moves at least 1 pixel in each direction
if (Math.abs(xMove) < 1) {
xMove /= Math.abs(xMove);
}
if (Math.abs(yMove) < 1) {
yMove /= Math.abs(yMove);
}
cursor.setX(cursor.getX() + xMove);
cursor.setY(cursor.getY() + yMove);
if (offsets.getDragTop()) {
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_RIGHT);
} else {
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_RIGHT);
}
//Double speed til moving 32/frame
if (velocity < 32) {
velocity *= 2;
}
//sleep til next frame
try {
Thread.sleep(50);
} catch (final Exception e) {
e.printStackTrace();
}
}
if (!fallBack) {
//calculate page to turn to
int forwardPage = commonValues.getCurrentPage() + 1;
if (decode_pdf.getPages().getBoolean(Display.BoolValue.SEPARATE_COVER) && forwardPage % 2 == 1) {
forwardPage++;
} else if (!decode_pdf.getPages().getBoolean(Display.BoolValue.SEPARATE_COVER) && forwardPage % 2 == 0) {
forwardPage++;
}
//change page
commonValues.setCurrentPage(forwardPage);
currentGUI.setPageNumber();
decode_pdf.setPageParameters(currentGUI.getScaling(), commonValues.getCurrentPage());
currentGUI.decodePage();
}
//hide turnover
decode_pdf.setUserOffsets(0, 0, org.jpedal.external.OffsetOptions.INTERNAL_DRAG_BLANK);
JavaFXPageNavigator.setPageTurnAnimating(false, currentGUI);
}
};
animation.setDaemon(true);
JavaFXPageNavigator.setPageTurnAnimating(true, currentGUI);
animation.start();
previewTurnover = false;
}
} else {
if (previewTurnover && offsets.getDragLeft()) {
//reset cursor
decode_pdf.setCursor(Cursor.DEFAULT);
//If previously displaying turnover, animate to corner
final Thread animation = new Thread() {
@Override
public void run() {
corner.setX((decode_pdf.getBoundsInLocal().getWidth() / 2) - pageW);
//work out if page change needed
boolean fallBack = true;
if (cursor.getX() > corner.getX() + pageW) {
corner.setX((corner.getX()) + (2 * pageW));
fallBack = false;
}
// Fall animation
int velocity = 1;
//ensure cursor is not outside expected range
if (!fallBack && cursor.getX() >= corner.getX()) {
cursor.setX(corner.getX() - 1);
}
if (fallBack && cursor.getX() <= corner.getX()) {
cursor.setX(corner.getX() + 1);
}
if (!offsets.getDragTop() && cursor.getY() >= corner.getY()) {
cursor.setY(corner.getY() - 1);
}
if (offsets.getDragTop() && cursor.getY() <= corner.getY()) {
cursor.setY(corner.getY() + 1);
}
//Calculate distance required
final double distX = (corner.getX() - cursor.getX());
final double distY = (corner.getY() - cursor.getY());
//Loop through animation
while ((!fallBack && cursor.getX() <= corner.getX())
|| (fallBack && cursor.getX() >= corner.getX())
|| (!offsets.getDragTop() && cursor.getY() <= corner.getY())
|| (offsets.getDragTop() && cursor.getY() >= corner.getY())) {
//amount to move this time
double xMove = velocity * distX * 0.002;
double yMove = velocity * distY * 0.002;
//make sure always moves at least 1 pixel in each direction
if (Math.abs(xMove) < 1) {
xMove /= Math.abs(xMove);
}
if (Math.abs(yMove) < 1) {
yMove /= Math.abs(yMove);
}
cursor.setX(cursor.getX() + xMove);
cursor.setY(cursor.getY() + yMove);
if (offsets.getDragTop()) {
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_TOP_LEFT);
} else {
decode_pdf.setUserOffsets((int) cursor.getX(), (int) cursor.getY(), org.jpedal.external.OffsetOptions.INTERNAL_DRAG_CURSOR_BOTTOM_LEFT);
}
//Double speed til moving 32/frame
if (velocity < 32) {
velocity *= 2;
}
//sleep til next frame
try {
Thread.sleep(50);
} catch (final Exception e) {
e.printStackTrace();
}
}
if (!fallBack) {
//calculate page to turn to
int backPage = commonValues.getCurrentPage() - 2;
if (backPage == 0) {
backPage = 1;
}
//change page
commonValues.setCurrentPage(backPage);
currentGUI.setPageNumber();
decode_pdf.setPageParameters(currentGUI.getScaling(), commonValues.getCurrentPage());
currentGUI.decodePage();
}
//hide turnover
decode_pdf.setUserOffsets(0, 0, org.jpedal.external.OffsetOptions.INTERNAL_DRAG_BLANK);
JavaFXPageNavigator.setPageTurnAnimating(false, currentGUI);
}
};
animation.setDaemon(true);
JavaFXPageNavigator.setPageTurnAnimating(true, currentGUI);
animation.start();
previewTurnover = false;
}
}
}
}
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