51 lines
1.3 KiB
PHP
51 lines
1.3 KiB
PHP
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<?php
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// $Header: /cvsroot/html2ps/utils_graphic.php,v 1.9 2007/01/24 18:56:10 Konstantin Exp $
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function do_image_open($filename) {
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// Gracefully process missing GD extension
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if (!extension_loaded('gd')) {
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return null;
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};
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// Disable interlacing for the generated images, as we do not need progressive images
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// if PDF files (futhermore, FPDF does not support such images)
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$image = do_image_open_wrapped($filename);
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if (!is_resource($image)) { return null; };
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if (!is_null($image)) {
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imageinterlace($image, 0);
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};
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return $image;
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}
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function do_image_open_wrapped($filename) {
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// FIXME: it will definitely cause problems;
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global $g_config;
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if (!$g_config['renderimages']) {
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return null;
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};
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// get the information about the image
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if (!$data = @getimagesize($filename)) { return null; };
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switch ($data[2]) {
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case 1: // GIF
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// Handle lack of GIF support in older versions of PHP
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if (function_exists('imagecreatefromgif')) {
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return @imagecreatefromgif($filename);
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} else {
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return null;
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};
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case 2: // JPG
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return @imagecreatefromjpeg($filename);
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case 3: // PNG
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$image = imagecreatefrompng($filename);
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// imagealphablending($image, false);
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// imagesavealpha($image, true);
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return $image;
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case 15: // WBMP
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return @imagecreatefromwbmp($filename);
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};
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return null;
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};
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?>
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