实现 GIF 打水印PHP类库

jopen 6年前

include 'Timagick.class.php';     $image = new Timagick();     $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');
<?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 Timagick  {    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 = $canvas;        }             }                    // 添加水印图片    public function add_watermark($path, $x = 0, $y = 0)    {          $watermark = new Imagick($path);          $draw = new ImagickDraw();          $draw->composite($watermark->getImageCompose(), $x, $y, $watermark->getImageWidth(), $watermark->getimageheight(), $watermark);           if($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, $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);        }    }       // 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     }