com.moebiusgames.pdfbox.table.PDFRenderContext Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright 2019 Moebiusgames UG (haftungsbeschaenkt).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.moebiusgames.pdfbox.table;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
/**
* This context collects all pages and their open streams
*/
public class PDFRenderContext {
private final PDDocument document;
private final List pages = new ArrayList<>();
public PDFRenderContext(PDDocument document, PDPage firstPage) {
this.document = document;
this.pages.add(new PDFPageWithStream(document, firstPage));
document.addPage(firstPage);
}
public PDFPageWithStream getLastPage() {
if (pages.isEmpty()) {
throw new IllegalStateException("no pages");
}
return pages.get(pages.size() - 1);
}
public PDFPageWithStream getPage(int index) {
if (index < 0 || index >= pages.size()) {
throw new IllegalArgumentException("Page index " + index
+ " is out of range");
}
return pages.get(index);
}
public int getPageCount() {
return pages.size();
}
public List getPages() {
return Collections.unmodifiableList(pages);
}
public PDDocument getDocument() {
return document;
}
public PDFPageWithStream getOrCreateNextPage(PDFPageWithStream currentPage) {
int index = pages.indexOf(currentPage);
if (index < 0) {
throw new IllegalArgumentException("Not a page of this context");
}
if (index == pages.size() - 1) {
return addPage();
}
return pages.get(index + 1);
}
public PDFPageWithStream addPage() {
final PDFPageWithStream lastPage = getLastPage();
final PDPage newPdPage = new PDPage(lastPage.getPage().getMediaBox());
PDFPageWithStream newPage = new PDFPageWithStream(document, newPdPage);
pages.add(newPage);
document.addPage(newPdPage);
return newPage;
}
public void closeAllPages() throws IOException {
for (PDFPageWithStream page : pages) {
page.close();
}
}
}