org.jpedal.objects.acroforms.overridingImplementations.PdfSwingPopup 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 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
@LICENSE@
*
* ---------------
* PdfSwingPopup.java
* ---------------
*/
package org.jpedal.objects.acroforms.overridingImplementations;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Point;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import javax.swing.BorderFactory;
import javax.swing.JInternalFrame;
import javax.swing.JTextArea;
import javax.swing.event.InternalFrameAdapter;
import javax.swing.event.InternalFrameEvent;
import javax.swing.event.MouseInputAdapter;
import org.jpedal.objects.acroforms.actions.SwingListener;
import org.jpedal.objects.raw.FormObject;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.utils.StringUtils;
/**
* provide PDF popup for Annotations
*/
public class PdfSwingPopup extends JInternalFrame {
/**
*
*/
private static final long serialVersionUID = 796302916236391896L;
PopupTitleBar titleBar;
PopupContentArea contentArea;
final FormObject formObject;
@SuppressWarnings("UnusedParameters")
public PdfSwingPopup(final FormObject popupObj, final int cropBoxWidth, final SwingListener listener) {
formObject = popupObj;
//float[] rect = formObject.getFloatArray(PdfDictionary.Rect);
float[] col;
final String titleString;
String contentString;
/*
* all the popup data is in the Parent not the popup object
*/
final PdfObject parentObj = popupObj.getParentPdfObj();
if (parentObj == null) {
col = new float[]{255, 255, 0};
titleString = "";
contentString = "";
} else {
//Set color from the popup object
col = popupObj.getFloatArray(PdfDictionary.C);
//If no C value present, check the parent object
if (col == null) {
col = parentObj.getFloatArray(PdfDictionary.C);
}
//If no color specified then use our default
if (col == null || col.length != 3) {
col = new float[]{255, 255, 0};
}
final StringBuilder titleBuilder = new StringBuilder();
final String subject = parentObj.getTextStreamValue(PdfDictionary.Subj);
if (subject != null) {
titleBuilder.append(subject);
titleBuilder.append('\t');
}
//read in date for title bar
final String modifiedDate = parentObj.getTextStreamValue(PdfDictionary.M);
if (modifiedDate != null) {
final StringBuilder date = new StringBuilder(modifiedDate);
date.delete(0, 2); //delete D:
date.insert(10, ':');
date.insert(13, ':');
date.insert(16, ' ');
final String year = date.substring(0, 4);
final String day = date.substring(6, 8);
date.delete(6, 8);
date.delete(0, 4);
date.insert(0, day);
date.insert(4, year);
date.insert(2, '/');
date.insert(5, '/');
date.insert(10, ' ');
titleBuilder.append(date);
}
//setup title text for popup
final String autherName = popupObj.getTextStreamValue(PdfDictionary.T);
if (autherName != null) {
titleBuilder.append('\n');
titleBuilder.append(autherName);
}
titleString = titleBuilder.toString();
//main body text on contents is always a text readable form of the form or the content of the popup window.
contentString = parentObj.getTextStreamValue(PdfDictionary.Contents);
if (contentString == null) {
contentString = "";
}
if (contentString.indexOf('\r') != -1) {
contentString = contentString.replaceAll("\r", "\n");
}
}
//remove title bar from internalframe so its looks as we want
((javax.swing.plaf.basic.BasicInternalFrameUI) this.getUI()).setNorthPane(null);
setLayout(new BorderLayout());
//add title bar
titleBar = new PopupTitleBar(titleString);
titleBar.setHighlighter(null);
titleBar.setEditable(false);
add(titleBar, BorderLayout.NORTH);
setColor(col);
//add content area
contentArea = new PopupContentArea(contentString);
contentArea.setWrapStyleWord(true);
contentArea.setLineWrap(true);
add(contentArea, BorderLayout.CENTER);
contentArea.addKeyListener(new PopupContentsUpdater());
contentArea.addMouseListener(listener);
//Set to false by listener but should be true
contentArea.setOpaque(true);
//set the font sizes so that they look more like adobes popups
final Font titFont = titleBar.getFont();
//Set base font size
final int baseFontSize = (int) formObject.getFontSize();
titleBar.setFont(new Font(titFont.getName(), titFont.getStyle(), baseFontSize - 1));
final Font curFont = contentArea.getFont();
contentArea.setFont(new Font(curFont.getName(), curFont.getStyle(), baseFontSize - 2));
//add focus listener to bring selected popup to front
addFocusListener(new FocusAdapter() {
@Override
public void focusGained(final FocusEvent e) {
toFront();
super.focusGained(e);
}
});
// Fix for popups showing up behind other objects on page
addInternalFrameListener(new InternalFrameAdapter() {
@Override
public void internalFrameActivated(final InternalFrameEvent e) {
final JInternalFrame frame = e.getInternalFrame();
// Brings the component to the front
frame.getParent().setComponentZOrder(frame, 0);
}
@Override
public void internalFrameDeactivated(final InternalFrameEvent e) {
final JInternalFrame frame = e.getInternalFrame();
//Changing page will set parent to null, so if null we ignore
if (frame.getParent() != null) {
// Sends the component back by one when focus is lost
frame.getParent().setComponentZOrder(frame, 1);
}
}
});
}
@Override
public void updateUI() {
super.updateUI();
//remove title bar from internalframe so its looks as we want
((javax.swing.plaf.basic.BasicInternalFrameUI) this.getUI()).setNorthPane(null);
}
public void setColor(final float[] col) {
//setup background color
Color bgColor = null;
if (col != null) {
if (col[0] > 1 || col[1] > 1 || col[2] > 1) {
bgColor = new Color((int) col[0], (int) col[1], (int) col[2]);
} else {
bgColor = new Color(col[0], col[1], col[2]);
}
//and set border to that if valid
setBorder(BorderFactory.createLineBorder(bgColor));
}
if (bgColor != null) {
titleBar.setBackground(bgColor);
}
}
//Done this way so our listener to immediately tell if popup and drag accordingly
private class PopupTitleBar extends JTextArea {
public PopupTitleBar(final String title) {
super(title);
final PopupDragListener listener = new PopupDragListener();
//add our drag listener so it acts like an internal frame
addMouseMotionListener(listener);
addMouseListener(listener);
}
}
//Done this way so our listener to immediately tell if popup and drag accordingly
private class PopupContentArea extends JTextArea {
public PopupContentArea(final String contents) {
super(contents);
final PopupContentsUpdater listener = new PopupContentsUpdater();
//add our drag listener so it acts like an internal frame
addKeyListener(listener);
}
}
private class PopupDragListener extends MouseInputAdapter {
Point clickStart;
@Override
public void mouseDragged(final MouseEvent e) {
if (clickStart == null) {
clickStart = e.getPoint();
}
//move the popup as the user drags the mouse
final Point pt = e.getPoint();
final Point curLoc = getLocation();
final int x = pt.x - clickStart.x;
final int y = pt.y - clickStart.y;
curLoc.translate(x, y);
setLocation(curLoc);
final float[] rect = formObject.getFloatArray(PdfDictionary.Rect);
rect[0] += (x / formObject.getCurrentScaling());
rect[2] += (x / formObject.getCurrentScaling());
rect[1] -= (y / formObject.getCurrentScaling());
rect[3] -= (y / formObject.getCurrentScaling());
formObject.setFloatArray(PdfDictionary.Rect, rect);
}
@Override
public void mousePressed(final MouseEvent e) {
clickStart = e.getPoint();
}
@Override
public void mouseReleased(final MouseEvent e) {
clickStart = null;
}
}
private class PopupContentsUpdater extends KeyAdapter {
@Override
public void keyReleased(final KeyEvent e) {
PdfObject parentObj = formObject.getParentPdfObj();
if (parentObj == null) {
parentObj = formObject;
}
parentObj.setTextStreamValue(PdfDictionary.Contents, StringUtils.toBytes(contentArea.getText()));
}
}
@Override
/*
* Set the font for the popup window.
* The font is modified in size for the title and the content.
*/
public void setFont(final Font f) {
super.setFont(f);
final int fontSize = f.getSize();
if (titleBar != null) {
titleBar.setFont(titleBar.getFont().deriveFont((float) fontSize - 1));
}
if (contentArea != null && titleBar != null) {
contentArea.setFont(titleBar.getFont().deriveFont((float) fontSize - 2));
}
}
}
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