Programming PHP

Example 10-12. Using bookmarks and thumbnails (continued)
pdf_begin_page($p,595,842);
$top = pdf_add_bookmark($p, "Countries");
$im = pdf_open_png($p, "fr-flag.png");
pdf_add_thumbnail($p, $im);
pdf_close_image($p,$im);
$font = pdf_findfont($p,"Helvetica-Bold","host",0);
pdf_setfont($p, $font, 20);
pdf_add_bookmark($p, "France", $top);
pdf_show_xy($p, "This is a page about France", 50, 800);
pdf_end_page($p);
pdf_begin_page($p,595,842);
$im = pdf_open_png($p, "nz-flag.png");
pdf_add_thumbnail($p, $im);
pdf_close_image($p,$im);
pdf_setfont($p, $font, 20);
pdf_add_bookmark($p, "Denmark", $top);
pdf_show_xy($p, "This is a page about New Zealand", 50, 800);
pdf_end_page($p);
pdf_close($p);
$buf = pdf_get_buffer($p);
$len = strlen($buf);
header("Content-Type:application/pdf");
header("Content-Length:$len");
header("Content-Disposition:inline; filename=bm.pdf");
echo $buf;
pdf_delete($p);
?>
The thumbnails generated by Example 10-12 are shown in Figure 10-14.
Links
pdflib supports functions that specify a region on a page that, when clicked on, takes
the reader somewhere else. The destination can be either another part of the same
document, another PDF document, some other application, or a web site.
The pdf_add_locallink( ) function adds a local linkto another place within the current
PDF file:
pdf_add_locallink(pdf, llx, lly, urx, ury, page, zoom);
All links in PDF files are rectangular. The lower-left coordinate is (urx,ury) and the
upper-right coordinate is (urx,ury). Valid zoom values are "retain", "fitpage",
"fitwidth", "fitheight", and "fitbbox".
The following call defines a 50 × 50 area that, if clicked, takes the reader to page 3
and retains the current zoom level:
pdf_add_locallink($p, 50, 700, 100, 750, 3, "retain");
This is the Title of the Book, eMatter Edition
Copyright © 2002 O’Reilly & Associates, Inc. All rights reserved.
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