function createThumbnail($image, $size, $complete_tag = false, $alt = 'alt=""')
{
// Parse size parameter
if (preg_match('@^(\\d+)x(\\d+)$@', $size, $matches)) {
$width = $matches[1];
$height = $matches[2];
} else {
if (preg_match('@^(\\d+)$@', $size)) {
$width = $size;
$height = $size;
} else {
MARKET_Base::raiseError(MARKET_ERROR_RETURN, __FUNCTION__ . '(): Size "' . htmlspecialchars($size) . '" is not acceptable.', __FILE__, __LINE__);
return MARKET_Filter::_defaultThumbnail();
}
}
$type = strtolower(substr(strrchr($image, '.'), 1));
$out = '/cache/' . dirname($image) . '/' . substr(basename($image), 0, strrpos(basename($image), '.')) . '.' . $width . 'x' . $height . '.' . $type;
if (@is_file(MARKET_ROOT_DIR . '/' . $out) && @is_readable(MARKET_ROOT_DIR . '/' . $out)) {
// Do nothing
} else {
// Create thumbnail
// Requires GD
if (extension_loaded('gd')) {
$gd_info = gd_info();
$in = MARKET_ROOT_DIR . '/' . $image;
if (@is_file($in) && @is_readable($in)) {
if (!(list($w, $h) = getimagesize($in))) {
MARKET_Base::raiseError(MARKET_ERROR_RETURN, __FUNCTION__ . '(): Image "' . htmlspecialchars($image) . '" is not supported', __FILE__, __LINE__);
return MARKET_Filter::_defaultThumbnail();
}
if ($type == 'jpeg') {
$type = 'jpg';
}
switch ($type) {
case 'bmp':
$img = imagecreatefromwbmp($in);
break;
case 'gif':
$img = imagecreatefromgif($in);
break;
case 'jpg':
$img = imagecreatefromjpeg($in);
break;
case 'png':
$img = imagecreatefrompng($in);
break;
default:
MARKET_Base::raiseError(MARKET_ERROR_RETURN, __FUNCTION__ . '(): Image "' . htmlspecialchars($image) . '" is not supported', __FILE__, __LINE__);
return MARKET_Filter::_defaultThumbnail();
}
// Resize and crop
$sratio = $w / $h;
$dratio = $width / $height;
if ($sratio > $dratio) {
$temp_width = (int) ($h * $dratio);
$temp_height = $h;
$x = (int) (($w - $temp_width) / 2);
$y = 0;
} else {
$temp_width = $w;
$temp_height = (int) ($w / $dratio);
$x = 0;
$y = (int) (($h - $temp_height) / 2);
}
$source_width = $temp_width;
$source_height = $temp_height;
$dst = imagecreatetruecolor($width, $height);
// Preserve transparency
if ($type == 'gif' || $type == 'png') {
imagecolortransparent($dst, imagecolorallocatealpha($dst, 0, 0, 0, 127));
imagealphablending($dst, false);
imagesavealpha($dst, true);
}
imagecopyresampled($dst, $img, 0, 0, $x, $y, $width, $height, $source_width, $source_height);
// Create dir
MARKET_Base::makeDir(dirname(MARKET_ROOT_DIR . $out));
switch ($type) {
case 'bmp':
imagewbmp($dst, MARKET_ROOT_DIR . $out);
break;
case 'gif':
imagegif($dst, MARKET_ROOT_DIR . $out);
break;
case 'jpg':
imagejpeg($dst, MARKET_ROOT_DIR . $out);
break;
case 'png':
imagepng($dst, MARKET_ROOT_DIR . $out);
break;
}
} else {
MARKET_Base::raiseError(MARKET_ERROR_WARNING, __FUNCTION__ . '(): Image "' . htmlspecialchars($image) . '" not found or not readable', __FILE__, __LINE__);
return MARKET_Filter::_defaultThumbnail('', $width, $height, $complete_tag, $alt);
}
} else {
MARKET_Base::raiseError(MARKET_ERROR_WARNING, __FUNCTION__ . '(): The GD extension is not loaded', __FILE__, __LINE__);
return MARKET_Filter::_defaultThumbnail($image, $width, $height, $complete_tag, $alt);
}
}
if ($complete_tag) {
return '<img src="' . MARKET_WEB_DIR . $out . '" width="' . $width . '" height="' . $height . '" ' . $alt . ' />';
} else {
return MARKET_WEB_DIR . '/' . $out;
}
}
