1<?php
2# $Id: starter_layer.php,v 1.1.2.2 2008/02/11 20:10:28 rjs Exp $
3# Starter layer:
4# Define several layers, output images and text to them and define
5# particular layers to be visible when opening the document
6#
7# Define two layers for RGB or Grayscale images and two layers for English or
8# German image captions. Output images and text on the various layers and
9# open the document with the RGB images and English captions visible.
10#
11# Required software: PDFlib/PDFlib+PDI/PPS 7
12# Required data: grayscale and RGB images
13#
14
15# This is where the data files are. Adjust as necessary.
16$searchpath = "../data";
17$title = "Starter Layer";
18
19# create a new PDFlib object
20$p = PDF_new();
21
22$rgb = "nesrin.jpg";
23$gray = "nesrin_gray.jpg";
24
25    PDF_set_parameter($p, "SearchPath", $searchpath);
26
27    # This means we must check return values of load_font() etc.
28    PDF_set_parameter($p, "errorpolicy", "return");
29
30
31    # Open the document with the "Layers" navigation tab visible
32    if (PDF_begin_document($p, "", "openmode=layers") == 0) {
33	die("Error: " .  PDF_get_errmsg($p));
34    }
35
36    PDF_set_info($p, "Creator", "PDFlib Cookbook");
37    $buf = $title . ' $Revision: 1.1.2.2 $';
38    PDF_set_info($p, "Title", $buf);
39
40    # Load the font
41    $font = PDF_load_font($p, "Helvetica", "winansi", "");
42
43    if ($font == 0) {
44	die("Error: " .  PDF_get_errmsg($p));
45    }
46
47    # Load the Grayscale image
48    $imageGray = PDF_load_image($p, "auto", $gray, "");
49    if ($imageGray == 0) {
50	die("Error: " .  PDF_get_errmsg($p));
51    }
52
53    # Load the RGB image
54    $imageRGB = PDF_load_image($p, "auto", $rgb, "");
55    if ($imageRGB == 0) {
56	die("Error: " .  PDF_get_errmsg($p));
57    }
58
59    # Define all layers which will be used, and their relationships.
60    # This should be done before the first page if the layers are
61    # used on more than one page.
62    #
63
64    # Define the layer "RGB"
65    $layerRGB = PDF_define_layer($p, "RGB", "");
66
67    # Define the layer "Grayscale" which is hidden when opening the
68    # document or printing it.
69    $layerGray = PDF_define_layer($p, "Grayscale",
70		"initialviewstate=false initialprintstate=false");
71
72    # At most one of the "Grayscale" and "RGB" layers should be visible
73    $buf = "group={" . $layerGray . " " . $layerRGB . "}";
74    PDF_set_layer_dependency($p, "Radiobtn", $buf);
75
76    # Define the layer "English"
77    $layerEN = PDF_define_layer($p, "English", "");
78
79    # Define the layer "German" which is hidden when opening the document
80    # or printing it.
81    $layerDE = PDF_define_layer($p, "German",
82		"initialviewstate=false initialprintstate=false");
83
84    # At most one of the "English" and "German" layers should be visible
85    $buf = "group={" . $layerEN . " " . $layerDE . "}";
86    PDF_set_layer_dependency($p, "Radiobtn", $buf);
87
88
89    # Start page
90    PDF_begin_page_ext($p, 0, 0, "width=a4.width height=a4.height");
91
92    # Place the RGB image on the layer "RGB"
93    PDF_begin_layer($p, $layerRGB);
94    PDF_fit_image($p, $imageRGB, 100, 400,
95		"boxsize={400 300} fitmethod=meet");
96
97    # Place the Grayscale image on the layer "Grayscale"
98    PDF_begin_layer($p, $layerGray);
99    PDF_fit_image($p, $imageGray, 100, 400,
100		"boxsize={400 300} fitmethod=meet");
101
102    # Place an English image caption on the layer "English"
103    PDF_begin_layer($p, $layerEN);
104    $buf =  "font=" . $font . "  fontsize=20";
105    PDF_fit_textline($p, "This is the Nesrin image.", 100, 370, $buf);
106
107    # Place a German image caption on the layer "German".
108    PDF_begin_layer($p, $layerDE);
109    $buf = "font=" . $font . " fontsize=20";
110    PDF_fit_textline($p, "Das ist das Nesrin-Bild.", 100, 370, $buf);
111
112    PDF_end_layer($p);
113
114    PDF_end_page_ext($p, "");
115
116    PDF_end_document($p, "");
117
118$buf = PDF_get_buffer($p);
119$len = strlen($buf);
120
121header("Content-type: application/pdf");
122header("Content-Length: $len");
123header("Content-Disposition: inline; filename=hello.pdf");
124print $buf;
125
126?>
127