/**
* Resize an image to a specific width/height
*
* @param int $maxWidth maximum image Width (px)
* @param int $maxHeight maximum image Height (px)
* @param string $origFile current images folder path (must have trailing end slash)
* @param string $destFile destination folder path for resized image (must have trailing end slash)
* @param int $quality Percentage image save quality 100 = no compression, 0 = max compression
*
* @return object image
*/
public function resize($maxWidth, $maxHeight, $origFile, $destFile, $quality = 100)
{
$ext = $this->getImgType($origFile);
if (!$ext) {
// False so not an image type so cant resize
// $$$ hugh - testing making thumbs for PDF's, so need a little tweak here
$origInfo = pathinfo($origFile);
if (JString::strtolower($origInfo['extension']) != 'pdf') {
return;
}
}
ini_set('display_errors', true);
// See if the imagick image lib is installed
if (class_exists('Imagick')) {
/* $$$ hugh - having a go at handling PDF thumbnails, which should work as long as the server
* has ghostscript (GS) installed. Don't have a generic test for GS being available, so
* it'll just fail if no GS.
*/
$origInfo = pathinfo($origFile);
if (JString::strtolower($origInfo['extension']) == 'pdf') {
$pdfThumbType = 'png';
// OK, it's a PDF, so first we need to add the page number we want to the source filename
$pdfFile = $origFile . '[0]';
if (is_callable('exec')) {
$destFile = str_replace('.pdf', '.png', $destFile);
// Output File
$convert = "convert " . $pdfFile . " -colorspace RGB -resize " . $maxWidth . " " . $destFile;
// Command creating
exec($convert);
// Execution of complete command.
} else {
// Now just load it, set format, resize, save and garbage collect.
// Hopefully IM will call the right delegate (ghostscript) to load the PDF.
$im = new Imagick($pdfFile);
$im->setImageFormat($pdfThumbType);
$im->thumbnailImage($maxWidth, $maxHeight, true);
$im->writeImage($destFile);
// as destroy() is deprecated
$im->clear();
}
} else {
$im = new Imagick();
/* Read the image file */
$im->readImage($origFile);
/* Thumbnail the image ( width 100, preserve dimensions ) */
$im->thumbnailImage($maxWidth, $maxHeight, true);
/* Write the thumbnail to disk */
$im->writeImage($destFile);
/* Free resources associated to the Imagick object */
$im->destroy();
}
$this->thumbPath = $destFile;
} else {
$resource = NewMagickWand();
if (!MagickReadImage($resource, $origFile)) {
echo "ERROR!";
print_r(MagickGetException($resource));
}
$resource = MagickTransformImage($resource, '0x0', $maxWidth . 'x' . $maxWidth);
$this->thumbPath = $destFile;
MagickWriteImage($resource, $destFile);
}
}
/**
* resize an image to a specific width/height using imagemagick
* you cant set the quality of the resized image
* @param int maximum image Width (px)
* @param int maximum image Height (px)
* @param string full path of image to resize
* @param string full file path to save resized image to
* @return string output from image magick command
*/
function resize($maxWidth, $maxHeight, $origFile, $destFile)
{
$ext = $this->GetImgType($origFile);
if (!$ext) {
//false so not an image type so cant resize
// $$$ hugh - testing making thumbs for PDF's, so need a little tweak here
$originfo = pathinfo($origFile);
if (strtolower($originfo['extension']) != 'pdf') {
return;
}
}
ini_set('display_errors', true);
//see if the imagick image lib is installed
if (class_exists('Imagick')) {
// $$$ hugh - having a go at handling PDF thumbnails, which should work as long as the server
// has ghostscript (GS) installed. Don't have a generic test for GS being available, so
// it'll just fail if no GS.
$originfo = pathinfo($origFile);
if (strtolower($originfo['extension']) == 'pdf') {
$pdf_thumb_type = 'png';
// could use jpg or whatever
// OK, it's a PDF, so first we need to add the page number we want to the source filename
$pdf_file = $origFile . '[0]';
// Now check to see if the destination filename needs changing - existing code will probably
// just have used the sourcefile extension for the thumb file.
$destinfo = pathinfo($destFile);
if (strtolower($destinfo['extension']) == 'pdf') {
// rebuild $destFile with valid image extension
// NOTE - changed $destFile arg to pass by reference OOOPS can't do that!
// $$$ rob 04/08/2011 wont work in php 5.1
//$destFile = $destinfo['dirname'] . DS . $destinfo['filename'] . '.' . $pdf_thumb_type;
$thumb_file = JFile::stripExt($destFile) . '.' . $pdf_thumb_type;
}
// Now just load it, set format, resize, save and garbage collect.
// Hopefully IM will call the right delagate (ghostscript) to load the PDF.
$im = new Imagick($pdf_file);
$im->setImageFormat($pdf_thumb_type);
$im->thumbnailImage($maxWidth, $maxHeight, true);
$im->writeImage($destFile);
$im->destroy();
} else {
$im = new Imagick();
/* Read the image file */
$im->readImage($origFile);
/* Thumbnail the image ( width 100, preserve dimensions ) */
$im->thumbnailImage($maxWidth, $maxHeight, true);
/* Write the thumbail to disk */
$im->writeImage($destFile);
/* Free resources associated to the Imagick object */
$im->destroy();
}
$this->_thumbPath = $destFile;
} else {
$resource = NewMagickWand();
if (!MagickReadImage($resource, $origFile)) {
echo "ERROR!";
print_r(MagickGetException($resource));
}
$resource = MagickTransformImage($resource, '0x0', $maxWidth . 'x' . $maxWidth);
$this->_thumbPath = $destFile;
MagickWriteImage($resource, $destFile);
}
}
