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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
*
* ---------------
* JavaFXData.java
* ---------------
*/
package org.jpedal.objects.acroforms.javafx;
import java.awt.Rectangle;
import javafx.application.Platform;
import javafx.scene.layout.Pane;
import javafx.scene.layout.Region;
import javafx.scene.transform.Transform;
import org.jpedal.display.Display;
import org.jpedal.objects.acroforms.GUIData;
import org.jpedal.objects.raw.FormObject;
import org.jpedal.objects.raw.PdfDictionary;
/**
* Swing specific implementation of Widget data
* (all non-Swing variables defined in ComponentData)
*
*/
public class JavaFXData extends GUIData {
/**
* panel components attached to
*/
private Pane panel;
/**
* alter font and size to match scaling. Note we pass in compoent so we can
* have multiple copies (needed if printing page displayed).
*/
private void scaleComponent(final FormObject formObject,final int rotate, final Region curComp, final boolean redraw,int indent, final boolean isPrinting) {
// Ignore scaling for now (JavaFX handles the scaling itself
float scale = 1f;
if (curComp == null || formObject.getPageNumber()==-1) {
return;
}
final int curPage=formObject.getPageNumber();
/*
* work out if visible in Layer
*/
if (layers != null) {
final String layerName = formObject.getLayerName();
// do not display
if (layerName != null && layers.isLayerName(layerName)) {
final boolean isVisible = layers.isVisible(layerName);
curComp.setVisible(isVisible);
}
}
final int[] bounds;
if(formObject.getParameterConstant(PdfDictionary.Subtype) == PdfDictionary.Popup && !isPrinting) {
bounds = cropComponent(formObject, scale, rotate, redraw, true);
} else {
bounds = cropComponent(formObject, scale, rotate, redraw, false);
}
// factor in offset if multiple pages displayed
if (xReached != null) {
bounds[0] += xReached[curPage];
bounds[1] += yReached[curPage];
}
final int pageWidth;
final int pageHeight;
if((pageData.getRotation(curPage)+rotate)%180==90){
pageWidth = pageData.getCropBoxHeight(curPage);
pageHeight = pageData.getCropBoxWidth(curPage);
}else {
pageWidth = pageData.getCropBoxWidth(curPage);
pageHeight = pageData.getCropBoxHeight(curPage);
}
if(displayView==Display.CONTINUOUS){
final double newIndent;
if(rotate==0 || rotate==180) {
newIndent = (widestPageNR - (pageWidth)) / 2;
} else {
newIndent = (widestPageR - (pageWidth)) / 2;
}
indent = (int)(indent + (newIndent*scale));
}
final int totalOffsetX = userX+indent;
final int totalOffsetY = userY;
curComp.setPrefWidth(bounds[2]);
curComp.setPrefHeight(bounds[3]);
curComp.setTranslateX(totalOffsetX + bounds[0]);
curComp.setTranslateY((pageHeight-(totalOffsetY + bounds[1])));
curComp.getTransforms().clear();
curComp.getTransforms().add(Transform.affine(1, 0, 0, -1, 0, 0));
}
private int[] cropComponent(final FormObject formObject, final float s, int r, final boolean redraw, final boolean positionOnly){
final Rectangle rect = formObject.getBoundingRectangle();
final int curPage=formObject.getPageNumber();
final float[] box= {rect.x,rect.y, rect.width + rect.x,rect.height + rect.y};
//NOTE if needs adding in ULC check SpecialOptions.SINGLE_PAGE
if(displayView!=Display.SINGLE_PAGE && displayView!=Display.NODISPLAY) {
r = (r + pageData.getRotation(curPage)) % 360;
}
final int cropX = pageData.getCropBoxX(curPage);
final int cropY = pageData.getCropBoxY(curPage);
final int cropW = pageData.getCropBoxWidth(curPage);
final int mediaW = pageData.getMediaBoxWidth(curPage);
final int mediaH = pageData.getMediaBoxHeight(curPage);
final int cropOtherX = (mediaW - cropW - cropX);
float x100=0,y100=0,w100=0,h100=0;
final int x;
final int y;
final int w;
final int h;
{
switch(r){
case 0:
x100 = box[0];
//if we are drawing on screen take off cropX if printing or extracting we dont need to do this.
if (redraw) {
x100 -= cropX;
}
y100 = mediaH - box[3]-cropOtherY[curPage];
w100 = (box[2] - box[0]);
h100 = (box[3] - box[1]);
break;
case 90:
// new hopefully better routine
x100 = box[1]-cropY;
y100 = box[0]-cropX;
w100 = (box[3] - box[1]);
h100 = (box[2] - box[0]);
break;
case 180:
// new hopefully better routine
w100 = box[2] - box[0];
h100 = box[3] - box[1];
y100 = box[1]-cropY;
x100 = mediaW-box[2]-cropOtherX;
break;
case 270:
// new hopefully improved routine
w100 = (box[3] - box[1]);
h100 = (box[2] - box[0]);
x100 = mediaH -box[3]-cropOtherY[curPage];
y100 = mediaW-box[2]-cropOtherX;
break;
}/**/
}
x = (int) (x100*s);
y = (int) (y100*s);
if(!positionOnly){
w = (int) (w100*s);
h = (int) (h100*s);
}else{
//Don't forget to factor in the resolution of the display
w = (int) (w100*dpi/72);
h = (int) (h100*dpi/72);
}
return new int[]{x,y,w,h};
}
/**
* used to remove all components from display
*/
@Override
protected void removeAllComponentsFromScreen() {
if (panel != null) {
if(Platform.isFxApplicationThread()){
panel.getChildren().clear();
}else{
final Runnable doPaintComponent = new Runnable() {
@Override public void run() {
panel.getChildren().clear();
}
};
Platform.runLater(doPaintComponent);
}
}
}
/**
* pass in object components drawn onto
* @param rootComp
*/
@Override
public void setRootDisplayComponent(final Object rootComp) {
panel = (Pane)rootComp;
}
@Override
public void setGUIComp(final FormObject formObject, final Object rawField) {
final Region retComponent=(Region) rawField;
// append state to name so we can retrieve later if needed
String name2 = formObject.getTextStreamValue(PdfDictionary.T);
if (name2 != null) {// we have some empty values as well as null
final String stateToCheck = formObject.getNormalOnState();
if (stateToCheck != null && !stateToCheck.isEmpty()) {
name2 = name2 + "-(" + stateToCheck + ')';
}
retComponent.setId(name2);
}
// make visible
scaleComponent(formObject, rotation, retComponent, true, indent, false);
}
/**
* alter location and bounds so form objects show correctly scaled
*/
@Override
public void resetScaledLocation(final float currentScaling, final int currentRotation, final int currentIndent) {
// we get a spurious call in linux resulting in an exception
if (formsUnordered == null || panel==null || startPage==0) {
return;
}
// needed as code called recursively otherwise
// if (forceRedraw || currentScaling != lastScaling || currentRotation != oldRotation || currentIndent != oldIndent){// || SwingUtilities.isEventDispatchThread()) {
oldRotation = currentRotation;
lastScaling = currentScaling;
oldIndent = currentIndent;
forceRedraw=false;
FormObject formObject;
Region rawComp;
int count;
for(int currentPage=startPage;currentPage© 2015 - 2024 Weber Informatics LLC | Privacy Policy