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* @package CHF::CORE
* @subpackage component
*/
class CHF_Component_Thumbnail extends CHF_Component
{
/**
* $errmsg
*
* Klaidos pranesimas parsinimui
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var string
*/
private $errmsg;
/**
* $error
*
* Pazymime kai ivyksta klaida
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var bool
*/
private $error;
/**
* $format
*
* Paveikslelio failo formatas
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var string
*/
private $format;
/**
* $currentDimensions
*
* Dabartiniai paveikslelio matmenys
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var array
*/
private $currentDimensions;
/**
* $newDimensions
*
* Nauji matmenys po apdirbimo
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var array
*/
private $newDimensions;
/**
* $newImage
*
* Galutinis paveikslelis atvaizdavimui arba issaugojimui
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var mixed
*/
private $newImage;
/**
* $oldImage
*
* Originalus paveikslelis apdirbimui
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var mixed
*/
private $oldImage;
/**
* $workingImage
*
* Apdirbamas paveikslelis
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var mixed
*/
private $workingImage;
/**
* $fileName
*
* Paveikslelio failo vardas.
* Gali buti su direktorija
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var string
*/
public $fileName;
/**
* $maxWidth
*
* Maksimalus paveikslelio plotis
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var int
*/
public $maxWidth;
/**
* $maxHeight
*
* Maksimalus paveikslelio aukstis
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var int
*/
public $maxHeight;
/**
* $percent
*
* Procentinis paveikslelio dydis
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var int
*/
public $percent;
/**
* $quality
*
* JPEG paveikslelio kokybe
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var int
*/
public $quality;
/**
* $cropSize
*
* Dydis pikseliais paveikslelio iskirpimui (nuo centro)
*
* @author Marius Kazemekaitis a.k.a cOdH
* @var int
*/
public $cropSize;
public $cropX;
public $cropY;
/**
* __construct
*
* @author Marius Kazemekaitis a.k.a cOdH
* @return void
*/
public function __construct()
{
$this->errmsg = '';
$this->error = false;
$this->format = '';
$this->currentDimensions = array();
$this->newDimensions = array();
$this->fileName = '';
$this->maxWidth = 0;
$this->maxHeight = 0;
$this->percent = 0;
$this->quality = 60;
$this->cropSize = 0;
$this->cropX = 0;
$this->cropY = 0;
}
/**
* __destruct
*
* @author Marius Kazemekaitis a.k.a cOdH
* @return void
*/
public function __destruct()
{
if($this->newImage) @ImageDestroy($this->newImage);
if($this->oldImage) @ImageDestroy($this->oldImage);
if($this->workingImage) @ImageDestroy($this->workingImage);
}
/**
* init()
*
* Tikrinamos klaidos ir nustatomas failo tipas
*
* @author Marius Kazemekaitis a.k.a cOdH
* @return void
*/
public function init()
{
if(!file_exists($this->fileName)) {
$this->errmsg = "File not found";
$this->error = true;
}
elseif(!is_readable($this->fileName)) {
$this->errmsg = "File is not readable";
$this->error = true;
}
if($this->error == false) {
if(stristr(strtolower($this->fileName),'.gif')) $this->format = 'GIF';
elseif(stristr(strtolower($this->fileName),'.jpg') || stristr(strtolower($this->fileName),'.jpeg')) $this->format = "JPG";
elseif(stristr(strtolower($this->fileName),'.png')) $this->format = 'PNG';
else {
$this->errmsg = "Unknown file format";
$this->error = true;
}
}
if($this->maxWidth == 0 && $this->maxHeight == 0 && $this->percent == 0) $this->percent = 100;
if($this->error == false) {
switch($this->format) {
case "GIF":
$this->oldImage = ImageCreateFromGif($this->fileName);
break;
case "JPG":
$this->oldImage = ImageCreateFromJpeg($this->fileName);
break;
case "PNG":
$this->oldImage = ImageCreateFromPng($this->fileName);
break;
}
$size = GetImageSize($this->fileName);
$this->currentDimensions = array("width"=>$size[0],"height"=>$size[1]);
$this->newImage = $this->oldImage;
}
if($this->error) {
$this->showErrorImage();
break;
}
}
public function getCurrentWidth()
{
return $this->currentDimensions['width'];
}
public function getCurrentHeight()
{
return $this->currentDimensions['height'];
}
public function calcWidth($width,$height)
{
$newWP = (100 * $this->maxWidth) / $width;
$newHeight = ($height * $newWP) / 100;
return array("newWidth"=>intval($this->maxWidth),"newHeight"=>intval($newHeight));
}
public function calcHeight($width,$height)
{
$newHP = (100 * $this->maxHeight) / $height;
$newWidth = ($width * $newHP) / 100;
return array("newWidth"=>intval($newWidth),"newHeight"=>intval($this->maxHeight));
}
public function calcPercent($width,$height)
{
$newWidth = ($width * $this->percent) / 100;
$newHeight = ($height * $this->percent) / 100;
return array("newWidth"=>intval($newWidth),"newHeight"=>intval($newHeight));
}
public function calcImageSize($width,$height)
{
$newSize = array("newWidth"=>$width,"newHeight"=>$height);
if($this->maxWidth > 0 && $width > $this->maxWidth)
{
$newSize = $this->calcWidth($width,$height);
if($this->maxHeight > 0 && $newSize['newHeight'] > $this->maxHeight)
$newSize = $this->calcHeight($newSize['newWidth'],$newSize['newHeight']);
$this->newDimensions = $newSize;
}
if($this->maxHeight > 0 && $height > $this->maxHeight)
{
$newSize = $this->calcHeight($width,$height);
if($this->maxWidth > 0 && $newSize['newWidth'] > $this->maxWidth)
{
$newSize = $this->calcWidth($newSize['newWidth'],$newSize['newHeight']);
}
$this->newDimensions = $newSize;
}
if($this->percent > 0)
{
$newSize = $this->calcPercent($width,$height);
$this->newDimensions = $newSize;
}
}
public function showErrorImage()
{
header("Content-type: image/png");
$errImg = ImageCreate(220,25);
$bgColor = ImageColorAllocate($errImg,0,0,0);
$fgColor1 = ImageColorAllocate($errImg,255,255,255);
$fgColor2 = ImageColorAllocate($errImg,255,0,0);
ImageString($errImg,3,6,6,"ERROR:",$fgColor2);
ImageString($errImg,3,55,6,$this->errmsg,$fgColor1);
ImagePng($errImg);
ImageDestroy($errImg);
}
public function resize($name = '')
{
$this->calcImageSize($this->currentDimensions['width'],$this->currentDimensions['height']);
if(function_exists("ImageCreateTrueColor"))
{
$this->workingImage = ImageCreateTrueColor($this->newDimensions['newWidth'],$this->newDimensions['newHeight']);
}
else {
$this->workingImage = ImageCreate($this->newDimensions['newWidth'],$this->newDimensions['newHeight']);
}
ImageCopyResampled(
$this->workingImage,
$this->oldImage,
0,
0,
0,
0,
$this->newDimensions['newWidth'],
$this->newDimensions['newHeight'],
$this->currentDimensions['width'],
$this->currentDimensions['height']
);
$this->oldImage = $this->workingImage;
$this->newImage = $this->workingImage;
$this->currentDimensions['width'] = $this->newDimensions['newWidth'];
$this->currentDimensions['height'] = $this->newDimensions['newHeight'];
}
public function crop()
{
$cropX = intval(($this->currentDimensions['width'] - $this->cropSize) / 2);
$cropY = intval(($this->currentDimensions['height'] - $this->cropSize) / 2);
if(function_exists("ImageCreateTrueColor"))
{
$this->workingImage = ImageCreateTrueColor($this->cropSize,$this->cropSize);
}
else {
$this->workingImage = ImageCreate($this->cropSize,$this->cropSize);
}
ImageCopy(
$this->workingImage,
$this->oldImage,
0,
0,
$this->cropX,
$this->cropY,
$this->cropSize,
$this->cropSize
);
$this->oldImage = $this->workingImage;
$this->newImage = $this->workingImage;
$this->currentDimensions['width'] = $this->cropSize;
$this->currentDimensions['height'] = $this->cropSize;
}
public function save($name)
{
$this->show($name);
}
function show($name='')
{
switch($this->format)
{
case "GIF":
if($name != '')
{
ImageGif($this->newImage,$name);
}
else {
header("Content-type: image/gif");
ImageGif($this->newImage);
}
break;
case "JPG":
if($name != '')
{
ImageJpeg($this->newImage,$name,$this->quality);
}
else {
header("Content-type: image/jpeg");
ImageJpeg($this->newImage,'',$this->quality);
}
break;
case "PNG":
if($name != '')
{
ImagePng($this->newImage,$name);
}
else {
header("Content-type: image/png");
ImagePng($this->newImage,$name);
}
break;
}
}
}
?>
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