/**
* liberty_magickwand_check_error
*
* @param array $pResult
* @param array $pWand
* @access public
* @return TRUE on success, FALSE on failure - mErrors will contain reason for failure
*/
function liberty_magickwand_check_error($pResult, $pWand)
{
$ret = FALSE;
if ($pResult === FALSE && WandHasException($pWand)) {
$ret = 'An image processing error occurred : ' . WandGetExceptionString($pWand);
}
return $ret;
}
public function generateImg($img, $desFile = "")
{
MagickCommentImage($img, "Image Creator (MagickWand) By Windy2000");
$type = MagickGetImageFormat($img);
$frame_count = MagickGetNumberImages($img);
if (empty($type)) {
$type = $frame_count > 1 ? "GIF" : "JPG";
}
if (strpos("tile,gradient,caption,label,logo,netscape,rose", strtolower($type)) !== false) {
$type = "PNG";
}
MagickSetFormat($img, $type);
if (empty($desFile)) {
//header("Content-Type: ".MagickGetMimeType($img));
if ($frame_count > 1) {
MagickEchoImagesBlob($img);
} else {
MagickEchoImageBlob($img);
}
} else {
if ($frame_count > 1) {
MagickWriteImages($img, $desFile, MagickTrue);
} else {
MagickWriteImage($img, $desFile);
}
}
if (WandHasException($img)) {
$this->Error($img);
}
$result = MagickGetExceptionType($img);
DestroyMagickWand($img);
return $result;
}
public function convert($ps_format, $ps_orig_filepath, $ps_dest_filepath)
{
$vs_filepath = $vs_ext = "";
#
# First make sure the original file is an image
#
if (!($vs_mimetype = $this->test($ps_orig_filepath, ""))) {
return false;
}
if ($vs_mimetype == "application/pdf") {
return false;
}
$va_dest_path_pieces = explode("/", $ps_dest_filepath);
$vs_dest_filestem = array_pop($va_dest_path_pieces);
$vs_dest_dir = join("/", $va_dest_path_pieces);
$vn_width = $vn_height = null;
switch ($ps_format) {
# ------------------------------------
case 'image/jpeg':
$vs_ext = "jpg";
$vs_filepath = $vs_dest_filestem . "_conv." . $vs_ext;
switch ($this->backend) {
case LIBRARY_GD:
if ($vs_mimetype = $this->test($ps_orig_filepath)) {
switch ($vs_mimetype) {
case "image/jpeg":
$rsource = imagecreatefromjpeg($ps_orig_filepath);
break;
case "image/png":
$rsource = imagecreatefrompng($ps_orig_filepath);
break;
case "image/gif":
$rsource = imagecreatefromgif($ps_orig_filepath);
break;
default:
return false;
break;
}
if (!$r) {
return false;
}
list($vn_width, $vn_height) = getimagesize($ps_orig_filepath);
if ($vn_width > $vn_height) {
$vn_ratio = $vn_height / $vn_width;
$vn_target_width = 800;
$vn_target_height = 800 * $vn_ratio;
} else {
$vn_ratio = $vn_width / $vn_height;
$vn_target_height = 800;
$vn_target_width = 800 * $vn_ratio;
}
if (!($rdest = imagecreatetruecolor($vn_target_width, $vn_target_height))) {
return false;
}
if (!imagecopyresampled($rdest, $rsource, 0, 0, 0, 0, $vn_target_width, $vn_target_height, $vn_width, $vn_height)) {
return false;
}
if (!imagejpeg($rdest, $vs_dest_dir . "/" . $vs_filepath)) {
return false;
}
} else {
return false;
}
break;
default:
$handle = NewMagickWand();
if (MagickReadImage($handle, $ps_orig_filepath)) {
if (WandHasException($handle)) {
return false;
}
$vn_width = MagickGetImageWidth($handle);
$vn_height = MagickGetImageHeight($handle);
if ($vn_width > $vn_height) {
$vn_ratio = $vn_height / $vn_width;
$vn_target_width = 800;
$vn_target_height = 800 * $vn_ratio;
} else {
$vn_ratio = $vn_width / $vn_height;
$vn_target_height = 800;
$vn_target_width = 800 * $vn_ratio;
}
if (!MagickResizeImage($handle, $vn_target_width, $vn_target_height, MW_CubicFilter, 1)) {
return false;
}
if (!MagickWriteImage($handle, $vs_dest_dir . "/" . $vs_filepath)) {
return false;
}
}
break;
}
break;
# ------------------------------------
# ------------------------------------
default:
return false;
break;
# ------------------------------------
}
return array("extension" => $vs_ext, "format_name" => $this->info["CONVERSIONS"][$ps_format]["format_name"], "dangerous" => 0, "width" => $vn_width, "height" => $vn_height, "long_format_name" => $this->info["CONVERSIONS"][$ps_format]["long_format_name"]);
}
/**
* Function checkWandError() compares the value of $result, which should be
* the result of any MagickWand API function, to explicit FALSE, and if it is
* FALSE, checks if $wand for contains an error condition (in case the API
* function is just returning FALSE as a normal return value).
*
* If the return value is FALSE, and the $wand contains a set error condition,
* the function outputs the error and forcibly ends the program.
*
* If not, returns $result as a reference.
*
* @param mixed MagickWand API function result
* @param resource Any MagickWand API resource
* @param int Always __LINE__ (script current line number predefined
* PHP constant)
*
* @return reference Returns reference to 1st argument (if no errors found)
*/
function &checkWandError(&$result, $wand, $line)
{
if ($result === FALSE && WandHasException($wand)) {
echo '<pre>An error occurred on line ', $line, ': ', WandGetExceptionString($wand), '</pre>';
exit;
}
return $result;
}
