1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.pdf;
import java.awt.geom.Rectangle2D;
/**
* Class representing a /Page object.
* <p>
* There is one of these for every page in a PDF document. The object
* specifies the dimensions of the page and references a /Resources
* object, a contents stream and the page's parent in the page
* hierarchy.
*/
public class PDFPage extends PDFResourceContext {
/** the page index (zero-based) */
protected int pageIndex;
/**
* Create a /Page object
*
* @param resources the /Resources object
* @param contents the content stream
* @param pageWidth the page's width in points
* @param pageHeight the page's height in points
* @param pageIndex the page's zero-based index (or -1 if the page number is auto-determined)
*/
public PDFPage(PDFResources resources, PDFStream contents,
int pageWidth, int pageHeight, int pageIndex) {
/* generic creation of object */
super(resources);
put("Type", new PDFName("Page"));
/* set fields using parameters */
setContents(contents);
setSimplePageSize(pageWidth, pageHeight);
this.pageIndex = pageIndex;
}
/**
* Create a /Page object
*
* @param resources the /Resources object
* @param pageWidth the page's width in points
* @param pageHeight the page's height in points
* @param pageIndex the page's zero-based index (or -1 if the page number is auto-determined)
*/
public PDFPage(PDFResources resources,
int pageWidth, int pageHeight, int pageIndex) {
this(resources, null, pageWidth, pageHeight, pageIndex);
}
private void setSimplePageSize(int width, int height) {
Rectangle2D box = new Rectangle2D.Double(0, 0, width, height);
setMediaBox(box);
setBleedBox(box); //Recommended by PDF/X
setTrimBox(box); //Needed for PDF/X
}
private PDFArray toPDFArray(Rectangle2D box) {
return new PDFArray(this, new double[] {
box.getX(), box.getY(), box.getMaxX(), box.getMaxY()});
}
/**
* Sets the "MediaBox" entry
* @param box the media rectangle
*/
public void setMediaBox(Rectangle2D box) {
put("MediaBox", toPDFArray(box));
}
/**
* Sets the "TrimBox" entry
* @param box the trim rectangle
*/
public void setTrimBox(Rectangle2D box) {
put("TrimBox", toPDFArray(box));
}
/**
* Sets the "BleedBox" entry
* @param box the bleed rectangle
*/
public void setBleedBox(Rectangle2D box) {
put("BleedBox", toPDFArray(box));
}
/**
* set this page contents
*
* @param contents the contents of the page
*/
public void setContents(PDFStream contents) {
if (contents != null) {
put("Contents", new PDFReference(contents));
}
}
/**
* set this page's parent
*
* @param parent the /Pages object that is this page's parent
*/
public void setParent(PDFPages parent) {
put("Parent", new PDFReference(parent));
}
/**
* Set the transition dictionary and duration.
* This sets the duration of the page and the transition
* dictionary used when going to the next page.
*
* @param dur the duration in seconds
* @param tr the transition dictionary
*/
public void setTransition(int dur, TransitionDictionary tr) {
put("Dur", new Integer(dur));
put("Trans", tr);
}
/**
* @return the page Index of this page (zero-based), -1 if it the page index should
* automatically be determined.
*/
public int getPageIndex() {
return this.pageIndex;
}
}
|
