/
image.php
107 lines (91 loc) · 2.76 KB
/
image.php
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<?php
class image
{
static function load($filename)
{
$info = getimagesize($filename);
list($width, $height) = $info;
if(!$width || !$height)
{
return null;
}
$image = null;
switch($info['mime'])
{
case 'image/gif':
$image = imagecreatefromgif($filename);
break;
case 'image/jpeg':
$image = imagecreatefromjpeg($filename);
break;
case 'image/png':
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
imagefill($image, 0, 0, $white);
$png = imagecreatefrompng($filename);
imagealphablending($png, true);
imagesavealpha($png, true);
imagecopy($image, $png, 0, 0, 0, 0, $width, $height);
imagedestroy($png);
break;
}
if($image)
{
return new image($image, $width, $height);
}
else
{
return null;
}
}
function save($filename, $quality = 80)
{
imagejpeg($this->resource, $filename, $quality);
}
function crop_copy($x, $y, $width, $height)
{
$image = imagecreatetruecolor($width, $height);
if(imagecopy($image, $this->resource, 0, 0, $x, $y, $width, $height))
{
return new image($image, $width, $height);
}
else
{
return null;
}
}
function fit_to_width_copy($width)
{
$new_width = $width;
$new_height = (int)(($width * $this->height) / $this->width);
$image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($image, $this->resource, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);
return new image($image, $new_width, $new_height);
}
function fit_to_height_copy($height)
{
$new_width = (int)(($height * $this->width) / $this->height);
$new_height = $height;
$image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($image, $this->resource, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);
return new image($image, $new_width, $new_height);
}
function width()
{
return $this->width;
}
function height()
{
return $this->height;
}
private function __construct($resource, $width, $height)
{
$this->resource = $resource;
$this->width = $width;
$this->height = $height;
}
private $resource = null;
private $width = 0;
private $height = 0;
}
?>