images/image_dimensions
Get the dimensions of an image for various purposes.
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<?php
/*
* Image dimensions:
* Get the dimensions of an image for various purposes
*
* Place an image in its original size, retrieve its dimensions using the
* "matchbox" option and place text directly to the right of the image. Fit an
* image into a box and use the box dimensions to center text directly below
* the image. Create a page with the dimensions of an image and place the image
* so that it covers the page completely.
*
* Required software: PDFlib/PDFlib+PDI/PPS 10
* Required data: image file
*/
/* This is where the data files are. Adjust as necessary. */
$searchpath = dirname(__FILE__,3)."/input";
$outfile = "";
$title = "Image Dimensions";
$imagefile = "websurfer.jpg";
$imagefile2 = "nesrin.jpg";
$x2 = 0.0; $y2 = 0.0; $y3 = 0.0;
try {
$p = new pdflib();
$p->set_option("searchpath={" . $searchpath . "}");
/* This means we must check return values of load_font() etc. */
$p->set_option("errorpolicy=return");
if ($p->begin_document($outfile, "") == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->set_info("Creator", "PDFlib Cookbook");
$p->set_info("Title", $title);
/* On page 1, place an image in its original size, retrieve its
* dimensions using the "matchbox" option and place text directly
* to the right of the image
*/
$p->begin_page_ext(0, 0, "width=100 height=100");
/* Load the image */
$image = $p->load_image("auto", $imagefile, "");
if ($image == 0)
throw new Exception("Error: " . $p->get_errmsg());
/* Fit the image with a matchbox called "web" respresenting
* the image dimensions */
$p->fit_image($image, 20, 20, "matchbox={name=web}");
$p->close_image($image);
/* Retrieve the coordinates of the lower right (x2, y2) and upper right
* (x3, Y3) image corners via the matchbox "web" specified above
*/
if ($p->info_matchbox("web", 1, "exists") == 1)
{
$x2 = $p->info_matchbox("web", 1, "x2");
$y2 = $p->info_matchbox("web", 1, "y2");
$y3 = $p->info_matchbox("web", 1, "y3");
}
/* Start the text line in x direction at the lower right corner of the
* image and in y direction 1/4 of the image height up
*/
$p->fit_textline("www.kraxi.com", $x2, $y2 + ($y3 - $y2)/4,
"fontname=NotoSerif-Regular fontsize=8");
$p->end_page_ext("");
/* On page 2, fit an image into a box and use the box dimensions to
* center text directly below the image
*/
$p->begin_page_ext(0, 0, "width=100 height=100");
/* Load the image */
$image = $p->load_image("auto", $imagefile2, "");
if ($image == 0)
throw new Exception("Error: " . $p->get_errmsg());
/* Fit the image with a matchbox called "web" respresenting
* the image dimension
*/
$p->fit_image($image, 10, 20, "boxsize={80 50} position={center bottom} " .
"fitmethod=meet");
$p->close_image($image);
/* Start the text line in x direction at the lower right corner of the
* image and in y direction 1/4 of the image height up
*/
$p->fit_textline("My holiday photo", 10, 10,
"boxsize={80 50} position={center bottom} " .
"fontname=NotoSerif-Regular fontsize=8");
$p->end_page_ext("");
/* Create page 3 with the original dimensions of the image and place
* the image so that it covers the page completely
*
* Load the image
*/
$image = $p->load_image("auto", $imagefile2, "");
if ($image == 0)
throw new Exception("Error: " . $p->get_errmsg());
/* Get the width and height of the image */
$imagewidth = $p->info_image($image, "imagewidth", "");
$imageheight = $p->info_image($image, "imageheight", "" );
/* Start page 3 with the dimensions of the image to be placed */
$p->begin_page_ext($imagewidth, $imageheight, "");
/* Fit the image */
$p->fit_image($image, 0, 0, "");
$p->close_image($image);
$p->end_page_ext("");
$p->end_document("");
$buf = $p->get_buffer();
$len = strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=image_dimensions.pdf");
print $buf;
} catch (PDFlibException $e) {
echo("PDFlib exception occurred:\n".
"[" . $e->get_errnum() . "] " . $e->get_apiname() .
": " . $e->get_errmsg() . "\n");
exit(1);
} catch (Throwable $e) {
echo("PHP exception occurred: " . $e->getMessage() . "\n");
exit(1);
}
$p = 0;
?>