118 lines
3.9 KiB
Java
118 lines
3.9 KiB
Java
/**
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* OptionalContentGroup.java
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*
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Copyright (c) 2018, Innovatics Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and / or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.pdfjet;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Container for drawable objects that can be drawn on a page as part of Optional Content Group.
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* Please see the PDF specification and Example_30 for more details.
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*
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* @author Mark Paxton
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*/
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public class OptionalContentGroup {
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protected String name;
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protected int ocgNumber;
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protected int objNumber;
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protected boolean visible;
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protected boolean printable;
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protected boolean exportable;
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private List<Drawable> components;
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public OptionalContentGroup(String name) {
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this.name = name;
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this.components = new ArrayList<Drawable>();
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}
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public void add(Drawable d) {
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components.add(d);
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}
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public void setVisible(boolean visible) {
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this.visible = visible;
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}
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public void setPrintable(boolean printable) {
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this.printable = printable;
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}
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public void setExportable(boolean exportable) {
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this.exportable = exportable;
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}
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public void drawOn(Page p) throws Exception {
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if (!components.isEmpty()) {
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p.pdf.groups.add(this);
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ocgNumber = p.pdf.groups.size();
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p.pdf.newobj();
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p.pdf.append("<<\n");
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p.pdf.append("/Type /OCG\n");
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p.pdf.append("/Name (" + name + ")\n");
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p.pdf.append("/Usage <<\n");
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if (visible) {
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p.pdf.append("/View << /ViewState /ON >>\n");
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}
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else {
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p.pdf.append("/View << /ViewState /OFF >>\n");
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}
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if (printable) {
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p.pdf.append("/Print << /PrintState /ON >>\n");
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}
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else {
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p.pdf.append("/Print << /PrintState /OFF >>\n");
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}
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if (exportable) {
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p.pdf.append("/Export << /ExportState /ON >>\n");
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}
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else {
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p.pdf.append("/Export << /ExportState /OFF >>\n");
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}
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p.pdf.append(">>\n");
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p.pdf.append(">>\n");
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p.pdf.endobj();
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objNumber = p.pdf.objNumber;
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p.append("/OC /OC");
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p.append(ocgNumber);
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p.append(" BDC\n");
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for (Drawable component : components) {
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component.drawOn(p);
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}
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p.append("\nEMC\n");
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}
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}
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} // End of OptionalContentGroup.java
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