php_imagick实现图片剪切、旋转、锐化、减色或增加特效的方法

header('Content-type: image/jpeg');?
$image = new Imagick('test.jpg');?
$color=new ImagickPixel();?
$color->setColor("rgb(220,220,220)");?
$image->borderImage($color,5,4);?
$image->blurImage(5,imagick::CHANNEL_GREEN);?
echo $image;

<?php?
header('Content-type: image/jpeg');?
$image = new Imagick('image.jpg');?
// If 0 is provided as a width or height parameter,// aspect ratio is maintained?
$image->thumbnailImage(100,0);?
echo $image;?
?>

<?php?
$images = new Imagick(glob('images/*.JPG'));?
foreach($images as $image) {?
// Providing 0 forces thumbnailImage to maintain aspect ratio??
$image->thumbnailImage(1024,0);?
}?
$images->writeImages();?
?>

<?php?
/* Create a new imagick object and read in GIF */
$im = new Imagick("example.gif");?
/* Resize all frames */
foreach ($im as $frame) {?
/* 50x50 frames */
$frame->thumbnailImage(50,50);?
/* Set the virtual canvas to correct size */
$frame->setImagePage(50,50,0);?
}/* Notice writeImages instead of writeImage */
$im->writeImages("example_small.gif",true);?
?>

include 'imagick.class.php';?
$image = new lib_image_imagick();?
$image->open('a.gif');?
$image->resize_to(100,100,'scale_fill');?
$image->add_text('1024i.com',10,20);?
$image->add_watermark('1024i.gif',50);?
$image->save_to('x.gif');
imagick.class.php

<?php?
class lib_image_imagick?
{?
?private $image = null;?
?private $type = null;?
?// 构造函数?
?public function __construct(){}?
?
?// 析构函数?
?public function __destruct()?
?{?
???? if($this->image!==null) $this->image->destroy();??
?}?
?// 载入图像?
?public function open($path)?
?{?
? $this->image = new Imagick( $path );?
? if($this->image)?
? {?
????? $this->type = strtolower($this->image->getImageFormat());?
? }?
? return $this->image;?
?}?
??
?public function crop($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);?
??????????????? $canvas->addImage( $img );?
??????????????? $canvas->setImageDelay( $img->getImageDelay() );?
??????????????? $canvas->setImagePage($width,0);?
??????????? }?
?????????????
??????????? $image->destroy();?
???????? $this->image = $canvas;?
???? }?
???? else
???? {?
???????? $this->image->cropImage($width,$y);?
???? }?
?}?
?/*
?* 更改图像大小?
?$fit: 适应大小方式?
?'force': 把图片强制变形成 $width X $height 大小?
?'scale': 按比例在平安框 $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': 按比例在平安框 $width X $height 内缩放图片,平安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',$fill_color = array(255,0) )?
?{?
??????
???? switch($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,false );?
??????????????????????? $canvas->addImage( $img );?
??????????????????????? $canvas->setImageDelay( $img->getImageDelay() );?
??????????????????? }?
??????????????????? $image->destroy();?
???????????????? $this->image = $canvas;?
???????????? }?
???????????? else
???????????? {?
???????????????? $this->image->thumbnailImage( $width,false );?
???????????? }?
???????????? break;?
???????? case 'scale':?
???????????? if($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,true );?
??????????????????????? $canvas->addImage( $img );?
??????????????????????? $canvas->setImageDelay( $img->getImageDelay() );?
??????????????????? }?
??????????????????? $image->destroy();?
???????????????? $this->image = $canvas;?
???????????? }?
???????????? else
???????????? {?
???????????????? $this->image->thumbnailImage( $width,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 = $height;?
??? if($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 );?
??? }?
??????????????? $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,true );?
???????????????????? $draw = new ImagickDraw();?
??????????????????????? $draw->composite($frame->getImageCompose(),$y,$dst_width,$dst_height,$frame);?
??????????????????????? $img = new Imagick();?
??????????????????????? $img->newImage($width,$color,'gif');?
??????????????????????? $img->drawImage($draw);?
??????????????????????? $canvas->addImage( $img );?
??????????????????????? $canvas->setImageDelay( $img->getImageDelay() );?
??????????????????????? $canvas->setImagePage($width,0);?
??????????????????? }?
???????????? }?
???????????? else
???????????? {?
???????????????? $image->thumbnailImage( $width,true );?
??????????????????
???????????????? $draw = new ImagickDraw();?
??????????????????? $draw->composite($image->getImageCompose(),$image);?
?????????????????????
???????????????? $canvas->newImage($width,$this->get_type() );?
??????????????????? $canvas->drawImage($draw);?
??????????????????? $canvas->setImagePage($width,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,true );?
?????????????????????????
??????????????????????? $canvas->addImage( $img );?
??????????????????????? $canvas->setImageDelay( $img->getImageDelay() );?
??????????????????????? $canvas->setImagePage($width,0);?
??????????????????? }?
???????????? }?
???????????? else
???????????? {?
???????????????? $image->cropImage($crop_w,$crop_y);?
???????????????? $image->thumbnailImage( $width,true );?
???????????????? $canvas->addImage( $image );?
???????????????? $canvas->setImagePage($width,0);?
???????????? }?
???????????? $image->destroy();?
???????????? $this->image = $canvas;?
???? }?
??????
?}?
??
?// 添加水印图片?
?public function add_watermark($path,$x = 0,$y = 0)?
?{?
??????? $watermark = new Imagick($path);?
??????? $draw = new ImagickDraw();?
??????? $draw->composite($watermark->getImageCompose(),$watermark->getImageWidth(),$watermark->getimageheight(),$watermark);?
???? if($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);?
???? }?
?}?
??
?// 添加水印文字?
?public function add_text($text,$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,$angle,$text);?
???????? }?
???? }?
???? else
???? {?
???????? $this->image->annotateImage($draw,$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);?
???? }?
?}?
?// 输出图像?
?public function output($header = true)?
?{?
???? if($header) header('Content-type: '.$this->type);?
???? echo $this->image->getImagesBlob();???
?}?
??
?public function get_width()?
?{?
??????? $size = $this->image->getImagePage();??
??????? return $size['width'];?
?}?
??
?public function get_height()?
?{?
???? $size = $this->image->getImagePage();??
??????? return $size['height'];?
?}?
?// 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 );?
?}?
?// 获取源图像类型?
?public function get_type()?
?{?
? return $this->type;?
?}?
?
?// 当前对象是否为图片?
?public function is_image()?
?{?
? if( $this->image )?
?? return true;?
? else
?? return false;?
?}?
?
?public function thumbnail($width = 100,$fit = true){ $this->image->thumbnailImage( $width,$fit );} // 生成缩略图 $fit为真时将保持比例并在平安框 $width X $height 内生成缩略图片?
?/*
?添加一个边框?
?$width: 左右边框宽度?
?$height: 上下边框宽度?
?$color: 颜色: RGB 颜色 'rgb(255,0)' 或 16进制颜色 '#FF0000' 或颜色单词 'white'/'red'...?
?*/
?public function border($width,$color='rgb(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($radius,$angle);} // 运动模糊?
?public function radial_blur($radius){$this->image->radialBlurImage($radius);} // 径向模糊?
?public function add_noise($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,$white_point);} // 调整色阶?
?public function modulate($brightness,$saturation,$hue){$this->image->modulateImage($brightness,$hue);} // 调整亮度、饱和度、色调?
?public function charcoal($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?
}