/**
* need GD library (first PHP line WIN: dl("php_gd.dll"); UNIX: dl("gd.so");
* www.boutell.com/gd/
* interval.cz/clanky/php-skript-pro-generovani-galerie-obrazku-2/
* cz.php.net/imagecopyresampled
* www.linuxsoft.cz/sw_detail.php?id_item=871
* www.webtip.cz/art/wt_tech_php/liquid_ir.html
* php.vrana.cz/zmensovani-obrazku.php
* diskuse.jakpsatweb.cz/
*
* @param string $file_in Vstupni soubor (mel by existovat)
* @param string $file_out Vystupni soubor, null ho jenom zobrazi (taky kdyz nema pravo se zapsat :)
* @param int $width Vysledna sirka (maximalni)
* @param int $height Vysledna vyska (maximalni)
* @param bool $crop Orez (true, obrazek bude presne tak velky), jinak jenom Resample (udane maximalni rozmery)
* @param int $type_out IMAGETYPE_type vystupniho obrazku
* @return bool Chyba kdyz vrati false
*/
function imageMagic($file_in, $file_out = null, $width = null, $height = null, $crop = null, $type_out = null, $watermarkParams = array(), $frontUpload = 0)
{
$fileWatermark = '';
// While front upload we don't display the process page
if ($frontUpload == 0) {
$stopText = PhocaGalleryHelper::displayStopThumbnailsCreating();
echo $stopText;
}
$memory = 8;
$memoryLimitChanged = 0;
$memory = (int) ini_get('memory_limit');
if ($memory == 0) {
$memory = 8;
}
if ($file_in !== '' && file_exists($file_in)) {
//array of width, height, IMAGETYPE, "height=x width=x" (string)
list($w, $h, $type) = GetImageSize($file_in);
if ($w > 0 && $h > 0) {
// we got the info from GetImageSize
// size of the image
if ($width == null || $width == 0) {
// no width added
$width = $w;
} else {
if ($height == null || $height == 0) {
// no height, adding the same as width
$height = $width;
}
}
if ($height == null || $height == 0) {
// no height, no width
$height = $h;
}
// miniaturizing
if (!$crop) {
// new size - nw, nh (new width/height)
$scale = $width / $w < $height / $h ? $width / $w : $height / $h;
// smaller rate
$src = array(0, 0, $w, $h);
$dst = array(0, 0, floor($w * $scale), floor($h * $scale));
} else {
// will be cropped
$scale = $width / $w > $height / $h ? $width / $w : $height / $h;
// greater rate
$newW = $width / $scale;
// check the size of in file
$newH = $height / $scale;
// which side is larger (rounding error)
if ($w - $newW > $h - $newH) {
$src = array(floor(($w - $newW) / 2), 0, floor($newW), $h);
} else {
$src = array(0, floor(($h - $newH) / 2), $w, floor($newH));
}
$dst = array(0, 0, floor($width), floor($height));
}
// Watermark
if (!empty($watermarkParams) && $watermarkParams['create'] == 1) {
$thumbnailSmall = false;
$thumbnailMedium = false;
$thumbnailLarge = false;
$thumbnailMedium = preg_match("/phoca_thumb_m_/i", $file_out);
$thumbnailLarge = preg_match("/phoca_thumb_l_/i", $file_out);
$fileName = PhocaGalleryHelper::getTitleFromFilenameWithExt($file_in);
// Which Watermark will be used
if ($thumbnailMedium) {
$fileWatermark = str_replace($fileName, 'watermark-medium.png', $file_in);
} else {
if ($thumbnailLarge) {
$fileWatermark = str_replace($fileName, 'watermark-large.png', $file_in);
} else {
$fileWatermark = '';
}
}
if (!file_exists($fileWatermark)) {
$fileWatermark = '';
}
if ($fileWatermark != '') {
list($wW, $hW, $typeW) = GetImageSize($fileWatermark);
switch ($watermarkParams['x']) {
case 'left':
$locationX = 0;
break;
case 'right':
$locationX = $dst[2] - $wW;
break;
case 'center':
default:
$locationX = $dst[2] / 2 - $wW / 2;
break;
}
switch ($watermarkParams['y']) {
case 'top':
$locationY = 0;
break;
case 'bottom':
$locationY = $dst[3] - $hW;
break;
case 'middle':
default:
$locationY = $dst[3] / 2 - $hW / 2;
break;
}
}
} else {
$fileWatermark = '';
}
}
if ($memory < 50) {
ini_set('memory_limit', '50M');
$memoryLimitChanged = 1;
}
// Resampling
// in file
// Watemark
if ($fileWatermark != '') {
if (!function_exists('ImageCreateFromPNG')) {
return 'ErrorNoPNGFunction';
}
$waterImage1 = ImageCreateFromPNG($fileWatermark);
}
// End Watermark
switch ($type) {
case IMAGETYPE_JPEG:
if (!function_exists('ImageCreateFromJPEG')) {
return 'ErrorNoJPGFunction';
}
$image1 = ImageCreateFromJPEG($file_in);
break;
case IMAGETYPE_PNG:
if (!function_exists('ImageCreateFromPNG')) {
return 'ErrorNoPNGFunction';
}
$image1 = ImageCreateFromPNG($file_in);
break;
case IMAGETYPE_GIF:
if (!function_exists('ImageCreateFromGIF')) {
return 'ErrorNoGIFFunction';
}
$image1 = ImageCreateFromGIF($file_in);
break;
case IMAGETYPE_WBMP:
if (!function_exists('ImageCreateFromWBMP')) {
return 'ErrorNoWBMPFunction';
}
$image1 = ImageCreateFromWBMP($file_in);
break;
default:
return 'ErrorNotSupportedImage';
break;
}
if ($image1) {
// protection against invalid image dimensions
/*foreach ($dst as $kdst =>$vdst) {
if ($dst[$kdst] == 0 ) {
$dst[$kdst] = 1;
}
} */
$image2 = @ImageCreateTruecolor($dst[2], $dst[3]);
if (!$image2) {
return 'ErrorNoImageCreateTruecolor';
}
switch ($type) {
case IMAGETYPE_PNG:
//imagealphablending($image1, false);
@imagealphablending($image2, false);
//imagesavealpha($image1, true);
@imagesavealpha($image2, true);
break;
}
ImageCopyResampled($image2, $image1, $dst[0], $dst[1], $src[0], $src[1], $dst[2], $dst[3], $src[2], $src[3]);
// Watermark
if ($fileWatermark != '') {
ImageCopy($image2, $waterImage1, $locationX, $locationY, 0, 0, $wW, $hW);
}
// End Watermark
// display the image
if ($file_out == null) {
header("Content-type: " . image_type_to_mime_type($type_out));
}
// out file
if ($type_out == null) {
// no bitmap
$type_out = $type == IMAGETYPE_WBMP ? IMAGETYPE_PNG : $type;
}
switch ($type_out) {
case IMAGETYPE_JPEG:
if (!function_exists('ImageJPEG')) {
return 'ErrorNoJPGFunction';
}
if (!@ImageJPEG($image2, $file_out, 85)) {
return 'ErrorWriteFile';
}
break;
case IMAGETYPE_PNG:
if (!function_exists('ImagePNG')) {
return 'ErrorNoPNGFunction';
}
if (!@ImagePNG($image2, $file_out)) {
return 'ErrorWriteFile';
}
break;
case IMAGETYPE_GIF:
if (!function_exists('ImageGIF')) {
return 'ErrorNoGIFFunction';
}
if (!@ImageGIF($image2, $file_out)) {
return 'ErrorWriteFile';
}
break;
default:
return 'ErrorNotSupportedImage';
break;
}
// free memory
ImageDestroy($image1);
ImageDestroy($image2);
if (isset($waterImage1)) {
ImageDestroy($waterImage1);
}
if ($memoryLimitChanged == 1) {
$memoryString = $memory . 'M';
ini_set('memory_limit', $memoryString);
}
return 'Success';
// Success
} else {
return 'Error1';
}
if ($memoryLimitChanged == 1) {
$memoryString = $memory . 'M';
ini_set('memory_limit', $memoryString);
}
}
return 'Error2';
}