Файл: protected/extensions/CImageHandler/CImageHandler.php
Строк: 340
<?php
/**
* Image handler
* @author Yaroslav Pelesh aka Tokolist http://tokolist.com
* @link https://github.com/tokolist/yii-components
* @version 1.2
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
class CImageHandler extends CApplicationComponent
{
private $originalImage = null;
private $image = null;
private $format = 0;
private $width = 0;
private $height = 0;
private $mimeType = '';
private $fileName = '';
public $transparencyColor = array(0, 0, 0);
const IMG_GIF = 1;
const IMG_JPEG = 2;
const IMG_PNG = 3;
const CORNER_LEFT_TOP = 1;
const CORNER_RIGHT_TOP = 2;
const CORNER_LEFT_BOTTOM = 3;
const CORNER_RIGHT_BOTTOM = 4;
const CORNER_CENTER = 5;
const FLIP_HORIZONTAL = 1;
const FLIP_VERTICAL = 2;
const FLIP_BOTH = 3;
public function getImage()
{
return $this->image;
}
public function getFormat()
{
return $this->format;
}
public function getWidth()
{
return $this->width;
}
public function getHeight()
{
return $this->height;
}
public function getMimeType()
{
return $this->mimeType;
}
public function __destruct()
{
$this->freeImage();
}
private function freeImage()
{
if(is_resource($this->image))
{
imagedestroy($this->image);
}
if($this->originalImage !== null)
{
if(is_resource($this->originalImage['image']))
{
imagedestroy($this->originalImage['image']);
}
$this->originalImage = null;
}
}
private function checkLoaded()
{
if (!is_resource($this->image))
{
throw new Exception('Load image first');
}
}
private function loadImage($file)
{
$result = array();
if ($imageInfo = @getimagesize($file))
{
$result['width'] = $imageInfo[0];
$result['height'] = $imageInfo[1];
$result['mimeType'] = $imageInfo['mime'];
switch ($result['format'] = $imageInfo[2])
{
case self::IMG_GIF:
if ($result['image'] = imagecreatefromgif($file))
{
return $result;
}
else
{
throw new Exception('Invalid image gif format');
}
break;
case self::IMG_JPEG:
if ($result['image'] = imagecreatefromjpeg($file))
{
return $result;
}
else
{
throw new Exception('Invalid image jpeg format');
}
break;
case self::IMG_PNG:
if ($result['image'] = imagecreatefrompng($file))
{
return $result;
}
else
{
throw new Exception('Invalid image png format');
}
break;
default:
throw new Exception('Not supported image format');
}
}
else
{
throw new Exception('Invalid image file');
}
}
protected function initImage($image = false)
{
if($image === false)
{
$image = $this->originalImage;
}
$this->width = $image['width'];
$this->height = $image['height'];
$this->mimeType = $image['mimeType'];
$this->format = $image['format'];
//Image
if(is_resource($this->image))
imagedestroy($this->image);
$this->image = imagecreatetruecolor($this->width, $this->height);
$this->preserveTransparency($this->image);
imagecopy($this->image, $image['image'], 0, 0, 0, 0, $this->width, $this->height);
}
public function load($file)
{
$this->freeImage();
if(($this->originalImage = $this->loadImage($file)))
{
$this->initImage();
$this->fileName = $file;
return $this;
}
else
{
return false;
}
}
public function reload()
{
$this->checkLoaded();
$this->initImage();
return $this;
}
private function preserveTransparency($newImage)
{
switch($this->format)
{
case self::IMG_GIF:
$color = imagecolorallocate(
$newImage,
$this->transparencyColor[0],
$this->transparencyColor[1],
$this->transparencyColor[2]
);
imagecolortransparent($newImage, $color);
imagetruecolortopalette($newImage, false, 256);
break;
case self::IMG_PNG:
imagealphablending($newImage, false);
$color = imagecolorallocatealpha (
$newImage,
$this->transparencyColor[0],
$this->transparencyColor[1],
$this->transparencyColor[2],
0
);
imagefill($newImage, 0, 0, $color);
imagesavealpha($newImage, true);
break;
}
}
public function resize($toWidth, $toHeight, $proportional = true)
{
$this->checkLoaded();
$toWidth = $toWidth !== false ? $toWidth : $this->width;
$toHeight = $toHeight !== false ? $toHeight : $this->height;
if($proportional)
{
$newHeight = $toHeight;
$newWidth = round($newHeight / $this->height * $this->width);
if($newWidth > $toWidth)
{
$newWidth = $toWidth;
$newHeight = round($newWidth / $this->width * $this->height);
}
}
else
{
$newWidth = $toWidth;
$newHeight = $toHeight;
}
$newImage = imagecreatetruecolor($newWidth, $newHeight);
$this->preserveTransparency($newImage);
imagecopyresampled($newImage, $this->image, 0, 0, 0, 0, $newWidth, $newHeight, $this->width, $this->height);
imagedestroy($this->image);
$this->image = $newImage;
$this->width = $newWidth;
$this->height = $newHeight;
return $this;
}
public function thumb($toWidth, $toHeight, $proportional = true)
{
$this->checkLoaded();
if($toWidth !== false)
$toWidth = min($toWidth, $this->width);
if($toHeight !== false)
$toHeight = min($toHeight, $this->height);
$this->resize($toWidth, $toHeight, $proportional);
return $this;
}
public function watermark($watermarkFile, $offsetX, $offsetY, $corner = self::CORNER_RIGHT_BOTTOM, $zoom = false)
{
$this->checkLoaded();
if ($wImg = $this->loadImage($watermarkFile))
{
$posX = 0;
$posY = 0;
$watermarkWidth = $wImg['width'];
$watermarkHeight = $wImg['height'];
if($zoom !== false)
{
$dimension = round(max($this->width, $this->height) * $zoom);
$watermarkHeight = $dimension;
$watermarkWidth = round($watermarkHeight / $wImg['height'] * $wImg['width']);
if($watermarkWidth > $dimension)
{
$watermarkWidth = $dimension;
$watermarkHeight = round($watermarkWidth / $wImg['width'] * $wImg['height']);
}
}
switch ($corner)
{
case self::CORNER_LEFT_TOP:
$posX = $offsetX;
$posY = $offsetY;
break;
case self::CORNER_RIGHT_TOP:
$posX = $this->width - $watermarkWidth - $offsetX;
$posY = $offsetY;
break;
case self::CORNER_LEFT_BOTTOM:
$posX = $offsetX;
$posY = $this->height - $watermarkHeight - $offsetY;
break;
case self::CORNER_RIGHT_BOTTOM:
$posX = $this->width - $watermarkWidth - $offsetX;
$posY = $this->height - $watermarkHeight - $offsetY;
break;
case self::CORNER_CENTER:
$posX = floor(($this->width - $watermarkWidth) / 2);
$posY = floor(($this->height - $watermarkHeight) / 2);
break;
default:
throw new Exception('Invalid $corner value');
}
imagecopyresampled(
$this->image,
$wImg['image'],
$posX,
$posY,
0,
0,
$watermarkWidth,
$watermarkHeight,
$wImg['width'],
$wImg['height']
);
imagedestroy($wImg['image']);
return $this;
}
else
{
return false;
}
}
public function flip($mode)
{
$this->checkLoaded();
$srcX = 0;
$srcY = 0;
$srcWidth = $this->width;
$srcHeight = $this->height;
switch ($mode)
{
case self::FLIP_HORIZONTAL:
$srcX = $this->width - 1;
$srcWidth = -$this->width;
break;
case self::FLIP_VERTICAL:
$srcY = $this->height - 1;
$srcHeight = -$this->height;
break;
case self::FLIP_BOTH:
$srcX = $this->width - 1;
$srcY = $this->height - 1;
$srcWidth = -$this->width;
$srcHeight = -$this->height;
break;
default:
throw new Exception('Invalid $mode value');
}
$newImage = imagecreatetruecolor($this->width, $this->height);
$this->preserveTransparency($newImage);
imagecopyresampled($newImage, $this->image, 0, 0, $srcX, $srcY, $this->width, $this->height, $srcWidth, $srcHeight);
imagedestroy($this->image);
$this->image = $newImage;
//dimensions not changed
return $this;
}
public function rotate($degrees)
{
$this->checkLoaded();
$degrees = (int) $degrees;
$this->image = imagerotate($this->image, $degrees, 0);
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
return $this;
}
public function crop($width, $height, $startX = false, $startY = false)
{
$this->checkLoaded();
$width = (int) $width;
$height = (int) $height;
//Centered crop
$startX = $startX === false ? floor(($this->width - $width) / 2) : intval($startX);
$startY = $startY === false ? floor(($this->height - $height) / 2) : intval($startY);
//Check dimensions
$startX = max(0, min($this->width, $startX));
$startY = max(0, min($this->height, $startY));
$width = min($width, $this->width - $startX);
$height = min($height, $this->height - $startY);
$newImage = imagecreatetruecolor($width, $height);
$this->preserveTransparency($newImage);
imagecopyresampled($newImage, $this->image, 0, 0, $startX, $startY, $width, $height, $width, $height);
imagedestroy($this->image);
$this->image = $newImage;
$this->width = $width;
$this->height = $height;
return $this;
}
public function text($text, $fontFile, $size=12, $color=array(0, 0, 0),
$corner=self::CORNER_LEFT_TOP, $offsetX=0, $offsetY=0, $angle=0)
{
$this->checkLoaded();
$bBox = imagettfbbox($size, $angle, $fontFile, $text);
$textHeight = $bBox[1] - $bBox[7];
$textWidth = $bBox[2] - $bBox[0];
$color = imagecolorallocate($this->image, $color[0], $color[1], $color[2]);
switch ($corner)
{
case self::CORNER_LEFT_TOP:
$posX = $offsetX;
$posY = $offsetY;
break;
case self::CORNER_RIGHT_TOP:
$posX = $this->width - $textWidth - $offsetX;
$posY = $offsetY;
break;
case self::CORNER_LEFT_BOTTOM:
$posX = $offsetX;
$posY = $this->height - $textHeight - $offsetY;
break;
case self::CORNER_RIGHT_BOTTOM:
$posX = $this->width - $textWidth - $offsetX;
$posY = $this->height - $textHeight - $offsetY;
break;
case self::CORNER_CENTER:
$posX = floor(($this->width - $textWidth) / 2);
$posY = floor(($this->height - $textHeight) / 2);
break;
default:
throw new Exception('Invalid $corner value');
}
imagettftext($this->image, $size, $angle, $posX, $posY + $textHeight, $color, $fontFile, $text);
return $this;
}
public function adaptiveThumb($width, $height)
{
$this->checkLoaded();
$width = intval($width);
$height = intval($height);
$widthProportion = $width / $this->width;
$heightProportion = $height / $this->height;
if ($widthProportion > $heightProportion)
{
$newWidth = $width;
$newHeight = round($newWidth / $this->width * $this->height);
}
else
{
$newHeight = $height;
$newWidth = round($newHeight / $this->height * $this->width);
}
$this->resize($newWidth, $newHeight);
$this->crop($width, $height);
return $this;
}
public function resizeCanvas($toWidth, $toHeight, $backgroundColor = array(255, 255, 255))
{
$this->checkLoaded();
$newWidth = min($toWidth, $this->width);
$newHeight = min($toHeight, $this->height);
$widthProportion = $newWidth / $this->width;
$heightProportion = $newHeight / $this->height;
if($widthProportion < $heightProportion)
{
$newHeight = round($widthProportion * $this->height);
}
else
{
$newWidth = round($heightProportion * $this->width);
}
$posX = floor(($toWidth - $newWidth) / 2);
$posY = floor(($toHeight - $newHeight) / 2);
$newImage = imagecreatetruecolor($toWidth, $toHeight);
$backgroundColor = imagecolorallocate($newImage, $backgroundColor[0], $backgroundColor[1], $backgroundColor[2]);
imagefill($newImage, 0, 0, $backgroundColor);
imagecopyresampled($newImage, $this->image, $posX, $posY, 0, 0, $newWidth, $newHeight, $this->width, $this->height);
imagedestroy($this->image);
$this->image = $newImage;
$this->width = $toWidth;
$this->height = $toHeight;
return $this;
}
public function grayscale()
{
$newImage = imagecreatetruecolor($this->width, $this->height);
imagecopy($newImage, $this->image, 0, 0, 0, 0, $this->width, $this->height);
imagecopymergegray($newImage, $newImage, 0, 0, 0, 0, $this->width, $this->height, 0);
imagedestroy($this->image);
$this->image = $newImage;
return $this;
}
public function show($inFormat = false, $jpegQuality = 75)
{
$this->checkLoaded();
if (!$inFormat)
{
$inFormat = $this->format;
}
switch ($inFormat)
{
case self::IMG_GIF:
header('Content-type: image/gif');
imagegif($this->image);
break;
case self::IMG_JPEG:
header('Content-type: image/jpeg');
imagejpeg($this->image, null, $jpegQuality);
break;
case self::IMG_PNG:
header('Content-type: image/png');
imagepng($this->image);
break;
default:
throw new Exception('Invalid image format for putput');
}
return $this;
}
public function save($file = false, $toFormat = false, $jpegQuality = 75, $touch = false)
{
if (empty($file))
{
$file = $this->fileName;
}
$this->checkLoaded();
if (!$toFormat)
{
$toFormat = $this->format;
}
switch ($toFormat)
{
case self::IMG_GIF:
if (!imagegif($this->image, $file))
{
throw new Exception('Can't save gif file');
}
break;
case self::IMG_JPEG:
if (!imagejpeg($this->image, $file, $jpegQuality))
{
throw new Exception('Can't save jpeg file');
}
break;
case self::IMG_PNG:
if (!imagepng($this->image, $file))
{
throw new Exception('Can't save png file');
}
break;
default:
throw new Exception('Invalid image format for save');
}
if ($touch && $file != $this->fileName)
{
touch($file, filemtime($this->fileName));
}
return $this;
}
}