imagick扩展类代码,PHP代码库,德仔网

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【PHP】 imagick扩展类
作者:mckee / 发布于2013/10/11/ 612

	class lib_image_imagick
	{
	private $image = null;
	private $type = null;
	&nbsp;
	// 构造函数
	public function __construct(){}
	&nbsp;
	&nbsp;
	// 析构函数
	public function __destruct()
	{
	 if($this->image!==null) $this->image->destroy();
	}
	&nbsp;
	// 载入图像
	public function open($path)
	{
	 $this->image = new Imagick( $path );
	 if($this->image)
	 {
	 $this->type = strtolower($this->image->getImageFormat());
	 }
	 return $this->image;
	}
	
	public function cropimage($width=0, $height=0){
	 if($width<=0 || $height<=0) return;
	 $this->image->cropThumbnailImage($width, $height);
	}
	
	public function thumbnailImage($width=0, $height=0){
	 if($width<=0) return;
	 $this->image->thumbnailImage($width, NULL);
	}
	&nbsp;
	public function crop($x=0, $y=0, $width=null, $height=null)
	{
	 if($width==null) $width = $this->image->getImageWidth()-$x;
	 if($height==null) $height = $this->image->getImageHeight()-$y;
	 if($width<=0 || $height<=0) return;
	
	 if($this->type=='gif')
	 {
	 $image = $this->image;
	 $canvas = new Imagick();
	
	 $images = $image->coalesceImages();
	 foreach($images as $frame){
	 $img = new Imagick();
	 $img->readImageBlob($frame);
	 $img->cropImage($width, $height, $x, $y);
	&nbsp;
	 $canvas->addImage( $img );
	 $canvas->setImageDelay( $img->getImageDelay() );
	 $canvas->setImagePage($width, $height, 0, 0);
	 }
	
	 $image->destroy();
	 $this->image = $canvas;
	 }
	 else
	 {
	 $this->image->cropImage($width, $height, $x, $y);
	 }
	}
	&nbsp;
	/*
	* 更改图像大小
	$fit: 适应大小方式
	'force': 把图片强制变形成 $width X $height 大小
	'scale': 按比例在安全框 $width X $height 内缩放图片, 输出缩放后图像大小 不完全等于 $width X $height
	'scale_fill': 按比例在安全框 $width X $height 内缩放图片，安全框内没有像素的地方填充色, 使用此参数时可设置背景填充色 $bg_color = array(255,255,255)(红,绿,蓝, 透明度) 透明度(0不透明-127完全透明))
	其它: 智能模能 缩放图像并载取图像的中间部分 $width X $height 像素大小
	$fit = 'force','scale','scale_fill' 时： 输出完整图像
	$fit = 图像方位值 时, 输出指定位置部分图像
	字母与图像的对应关系如下:
	
	north_west north north_east
	
	west center east
	
	south_west south south_east
	
	*/
	public function resize_to($width = 100, $height = 100, $fit = 'center', $fill_color = array(255,255,255,0) )
	{
	
	 switch($fit)
	 {
	 case 'force':
	 if($this->type=='gif')
	 {
	 $image = $this->image;
	 $canvas = new Imagick();
	
	 $images = $image->coalesceImages();
	 foreach($images as $frame){
	 $img = new Imagick();
	 $img->readImageBlob($frame);
	 $img->thumbnailImage( $width, $height, false );
	&nbsp;
	 $canvas->addImage( $img );
	 $canvas->setImageDelay( $img->getImageDelay() );
	 }
	 $image->destroy();
	 $this->image = $canvas;
	 }
	 else
	 {
	 $this->image->thumbnailImage( $width, $height, false );
	 }
	 break;
	 case 'scale':
	 if($this->type=='gif')
	 {
	 $image = $this->image;
	 $images = $image->coalesceImages();
	 $canvas = new Imagick();
	 foreach($images as $frame){
	 $img = new Imagick();
	 $img->readImageBlob($frame);
	 $img->thumbnailImage( $width, $height, true );
	&nbsp;
	 $canvas->addImage( $img );
	 $canvas->setImageDelay( $img->getImageDelay() );
	 }
	 $image->destroy();
	 $this->image = $canvas;
	 }
	 else
	 {
	 $this->image->thumbnailImage( $width, $height, true );
	 }
	 break;
	 case 'scale_fill':
	 $size = $this->image->getImagePage();
	 $src_width = $size['width'];
	 $src_height = $size['height'];
	
	 $x = 0;
	 $y = 0;
	
	 $dst_width = $width;
	 $dst_height = $height;
	&nbsp;
	 if($src_width*$height > $src_height*$width)
	 {
	 $dst_height = intval($width*$src_height/$src_width);
	 $y = intval( ($height-$dst_height)/2 );
	 }
	 else
	 {
	 $dst_width = intval($height*$src_width/$src_height);
	 $x = intval( ($width-$dst_width)/2 );
	 }
	&nbsp;
	 $image = $this->image;
	 $canvas = new Imagick();
	
	 $color = 'rgba('.$fill_color[0].','.$fill_color[1].','.$fill_color[2].','.$fill_color[3].')';
	 if($this->type=='gif')
	 {
	 $images = $image->coalesceImages();
	 foreach($images as $frame)
	 {
	 $frame->thumbnailImage( $width, $height, true );
	&nbsp;
	 $draw = new ImagickDraw();
	 $draw->composite($frame->getImageCompose(), $x, $y, $dst_width, $dst_height, $frame);
	&nbsp;
	 $img = new Imagick();
	 $img->newImage($width, $height, $color, 'gif');
	 $img->drawImage($draw);
	&nbsp;
	 $canvas->addImage( $img );
	 $canvas->setImageDelay( $img->getImageDelay() );
	 $canvas->setImagePage($width, $height, 0, 0);
	 }
	 }
	 else
	 {
	 $image->thumbnailImage( $width, $height, true );
	
	 $draw = new ImagickDraw();
	 $draw->composite($image->getImageCompose(), $x, $y, $dst_width, $dst_height, $image);
	
	 $canvas->newImage($width, $height, $color, $this->get_type() );
	 $canvas->drawImage($draw);
	 $canvas->setImagePage($width, $height, 0, 0);
	 }
	 $image->destroy();
	 $this->image = $canvas;
	 break;
	 default:
	 $size = $this->image->getImagePage();
	 $src_width = $size['width'];
	 $src_height = $size['height'];
	
	 $crop_x = 0;
	 $crop_y = 0;
	
	 $crop_w = $src_width;
	 $crop_h = $src_height;
	
	 if($src_width*$height > $src_height*$width)
	 {
	 $crop_w = intval($src_height*$width/$height);
	 }
	 else
	 {
	 $crop_h = intval($src_width*$height/$width);
	 }
	
	 switch($fit)
	 {
	 case 'north_west':
	 $crop_x = 0;
	 $crop_y = 0;
	 break;
	 case 'north':
	 $crop_x = intval( ($src_width-$crop_w)/2 );
	 $crop_y = 0;
	 break;
	 case 'north_east':
	 $crop_x = $src_width-$crop_w;
	 $crop_y = 0;
	 break;
	 case 'west':
	 $crop_x = 0;
	 $crop_y = intval( ($src_height-$crop_h)/2 );
	 break;
	 case 'center':
	 $crop_x = intval( ($src_width-$crop_w)/2 );
	 $crop_y = intval( ($src_height-$crop_h)/2 );
	 break;
	 case 'east':
	 $crop_x = $src_width-$crop_w;
	 $crop_y = intval( ($src_height-$crop_h)/2 );
	 break;
	 case 'south_west':
	 $crop_x = 0;
	 $crop_y = $src_height-$crop_h;
	 break;
	 case 'south':
	 $crop_x = intval( ($src_width-$crop_w)/2 );
	 $crop_y = $src_height-$crop_h;
	 break;
	 case 'south_east':
	 $crop_x = $src_width-$crop_w;
	 $crop_y = $src_height-$crop_h;
	 break;
	 default:
	 $crop_x = intval( ($src_width-$crop_w)/2 );
	 $crop_y = intval( ($src_height-$crop_h)/2 );
	 }
	
	 $image = $this->image;
	 $canvas = new Imagick();
	
	 if($this->type=='gif')
	 {
	 $images = $image->coalesceImages();
	 foreach($images as $frame){
	 $img = new Imagick();
	 $img->readImageBlob($frame);
	 $img->cropImage($crop_w, $crop_h, $crop_x, $crop_y);
	 $img->thumbnailImage( $width, $height, true );
	
	 $canvas->addImage( $img );
	 $canvas->setImageDelay( $img->getImageDelay() );
	 $canvas->setImagePage($width, $height, 0, 0);
	 }
	 }
	 else
	 {
	 $image->cropImage($crop_w, $crop_h, $crop_x, $crop_y);
	 $image->thumbnailImage( $width, $height, true );
	 $canvas->addImage( $image );
	 $canvas->setImagePage($width, $height, 0, 0);
	 }
	 $image->destroy();
	 $this->image = $canvas;
	 }
	
	}
	
	&nbsp;
	
	&nbsp;
	// 添加水印图片
	public function add_watermark($path, $x = 0, $y = 0)
	{
	 $watermark = new Imagick($path);
	 $draw = new ImagickDraw();
	 $draw->composite($watermark->getImageCompose(), $x, $y, $watermark->getImageWidth(), $watermark->getimageheight(), $watermark);
	&nbsp;
	 if($this->type=='gif')
	 {
	 $image = $this->image;
	 $canvas = new Imagick();
	 $images = $image->coalesceImages();
	 foreach($image as $frame)
	 {
	 $img = new Imagick();
	 $img->readImageBlob($frame);
	 $img->drawImage($draw);
	
	 $canvas->addImage( $img );
	 $canvas->setImageDelay( $img->getImageDelay() );
	 }
	 $image->destroy();
	 $this->image = $canvas;
	 }
	 else
	 {
	 $this->image->drawImage($draw);
	 }
	}
	&nbsp;
	
	// 添加水印文字
	public function add_text($text, $x = 0 , $y = 0, $angle=0, $style=array())
	{
	 $draw = new ImagickDraw();
	 if(isset($style['font'])) $draw->setFont($style['font']);
	 if(isset($style['font_size'])) $draw->setFontSize($style['font_size']);
	 if(isset($style['fill_color'])) $draw->setFillColor($style['fill_color']);
	 if(isset($style['under_color'])) $draw->setTextUnderColor($style['under_color']);
	
	 if($this->type=='gif')
	 {
	 foreach($this->image as $frame)
	 {
	 $frame->annotateImage($draw, $x, $y, $angle, $text);
	 }
	 }
	 else
	 {
	 $this->image->annotateImage($draw, $x, $y, $angle, $text);
	 }
	}
	
	
	// 保存到指定路径
	public function save_to( $path )
	{
	 if($this->type=='gif')
	 {
	 $this->image->writeImages($path, true);
	 }
	 else
	 {
	 $this->image->writeImage($path);
	 }
	}
	&nbsp;
	// 输出图像
	public function output($header = true)
	{
	 if($header) header('Content-type: '.$this->type);
	 echo $this->image->getImagesBlob();
	}
	&nbsp;
	
	public function get_width()
	{
	 $size = $this->image->getImagePage();
	 return $size['width'];
	}
	
	public function get_height()
	{
	 $size = $this->image->getImagePage();
	 return $size['height'];
	}
	&nbsp;
	// 设置图像类型， 默认与源类型一致
	public function set_type( $type='png' )
	{
	 $this->type = $type;
	 $this->image->setImageFormat( $type );
	}
	&nbsp;
	// 获取源图像类型
	public function get_type()
	{
	 return $this->type;
	}
	&nbsp;
	&nbsp;
	// 当前对象是否为图片
	public function is_image()
	{
	 if( $this->image )
	 return true;
	 else
	 return false;
	}
	
	&nbsp;
	&nbsp;
	public function thumbnail($width = 100, $height = 100, $fit = true){ $this->image->thumbnailImage( $width, $height, $fit );} // 生成缩略图 $fit为真时将保持比例并在安全框 $width X $height 内生成缩略图片
	&nbsp;
	/*
	添加一个边框
	$width: 左右边框宽度
	$height: 上下边框宽度
	$color: 颜色: RGB 颜色 'rgb(255,0,0)' 或 16进制颜色 '#FF0000' 或颜色单词 'white'/'red'...
	*/
	public function border($width, $height, $color='rgb(220, 220, 220)')
	{
	 $color=new ImagickPixel();
	 $color->setColor($color);
	 $this->image->borderImage($color, $width, $height);
	}
	
	public function blur($radius, $sigma){$this->image->blurImage($radius, $sigma);} // 模糊
	public function gaussian_blur($radius, $sigma){$this->image->gaussianBlurImage($radius, $sigma);} // 高斯模糊
	public function motion_blur($radius, $sigma, $angle){$this->image->motionBlurImage($radius, $sigma, $angle);} // 运动模糊
	public function radial_blur($radius){$this->image->radialBlurImage($radius);} // 径向模糊
	&nbsp;
	public function add_noise($type=null){$this->image->addNoiseImage($type==null?imagick::NOISE_IMPULSE:$type);} // 添加噪点
	
	public function level($black_point, $gamma, $white_point){$this->image->levelImage($black_point, $gamma, $white_point);} // 调整色阶
	public function modulate($brightness, $saturation, $hue){$this->image->modulateImage($brightness, $saturation, $hue);} // 调整亮度、饱和度、色调
	&nbsp;
	public function charcoal($radius, $sigma){$this->image->charcoalImage($radius, $sigma);} // 素描
	public function oil_paint($radius){$this->image->oilPaintImage($radius);} // 油画效果
	
	public function flop(){$this->image->flopImage();} // 水平翻转
	public function flip(){$this->image->flipImage();} // 垂直翻转
	&nbsp;
	}
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