PHP 使用 Imagick 裁切-生成缩略图-添加水印自动检

2020-03-22 20:04:25

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给骨头系统开发的图像库的 imagick 部分，支持 gif ，完美支持裁切、生成缩略图、添加水印。
支持按方位生成缩略图像，如：
// 把左上角优先$image- resize_to(100, 100, 'north_west');// 右边优先$image- resize_to(100, 100, 'east');...更多参数看源代码
原图效果图:
调用方式:include 'imagick.html' target='_blank'>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', 10, 50); $image- save_to('x.gif'); imagick.class.php php @版本日期: 版本日期: 2012年1月18日 @著作权所有: 1024 intelligence ( http://www.1024i.com ) 获得使用本类库的许可, 您必须保留著作权声明信息. 报告漏洞，意见或建议, 请联系 Lou Barnes(iua1024@gmail.com) 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, $height, 0, 0); $image- destroy(); $this- image = $canvas; else $this- image- cropImage($width, $height, $x, $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 ); $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 ); $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 = $height; if($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, $height, true ); $draw = new ImagickDraw(); $draw- composite($frame- getImageCompose(), $x, $y, $dst_width, $dst_height, $frame); $img = new Imagick(); $img- newImage($width, $height, $color, 'gif'); $img- drawImage($draw); $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;
$draw = new ImagickDraw(); $draw- composite($watermark- getImageCompose(), $x, $y, $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, $x = 0 , $y = 0, $angle=0, $ '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); // 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, $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 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, $hue);} // 调整亮度、饱和度、色调 public function charcoal($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 }PHP教程

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