實現 GIF 打水印PHP類庫

jopen 10年前發布 | 13K 次閱讀 PHP PHP開發
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');</pre>
<?php
/*
@版本日期: 版本日期: 2012年1月18日
@著作權所有: 1024 intelligence ( http://www.1024i.com )
獲得使用本類庫的許可, 您必須保留著作權聲明信息.
報告漏洞，意見或建議, 請聯系 Lou Barnes(iua1024@gmail.com)
*/
class Timagick
{
  private $image = null;
  private $type = null;
// 構造函數
  public function __construct(){}
// 析構函數
  public function __destruct()
  {
      if($this->image!==null) $this->image->destroy();
  }
// 載入圖像
  public function open($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);
  }

}
/*

更改圖像大小
$fit: 適應大小方式
'force': 把圖片強制變形成 $width X $height 大小
'scale': 按比例在安全框 $width X $height 內縮放圖片, 輸出縮放后圖像大小 不完全等于 $width X $height
'scale_fill': 按比例在安全框 $width X $height 內縮放圖片，安全框內沒有像素的地方填充色, 使用此參數時可設置背景填充色 $bg_color = array(255,255,255)(紅,綠,藍, 透明度) 透明度(0不透明-127完全透明))
其它: 智能模能 縮放圖像并載取圖像的中間部分 $width X $height 像素大小
$fit = 'force','scale','scale_fill' 時： 輸出完整圖像
$fit = 圖像方位值 時, 輸出指定位置部分圖像
字母與圖像的對應關系如下:
north_west   north   north_east
west         center        east
south_west   south   south_east
*/
public function resize_to($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;

}
}


// 添加水印圖片
  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);
  }

}
// 保存到指定路徑
  public function save_to( $path )
  {
      if($this->type=='gif')
      {
          $this->image->writeImages($path, true);
      }
      else
      {
          $this->image->writeImage($path);
      }
  }
// 輸出圖像
  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'];
  }
// 設置圖像類型， 默認與源類型一致
  public function set_type( $type='png' )
  {
      $this->type = $type;
        $this->image->setImageFormat( $type );
  }
// 獲取源圖像類型
  public function get_type()
  {
    return $this->type;
  }
// 當前對象是否為圖片
  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 );} // 生成縮略圖 $fit為真時將保持比例并在安全框 $width X $height 內生成縮略圖片
/
  添加一個邊框
  $width: 左右邊框寬度
  $height: 上下邊框寬度
  $color: 顏色: RGB 顏色 'rgb(255,0,0)' 或 16進制顏色 '#FF0000' 或顏色單詞 'white'/'red'...
  /
  public function border($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, $angle);} // 運動模糊
  public function radial_blur($radius){$this->image->radialBlurImage($radius);} // 徑向模糊
public function add_noise($type=null){$this->image->addNoiseImage($type==null?imagick::NOISE_IMPULSE:$type);} // 添加噪點
public function level($black_point, $gamma, $white_point){$this->image->levelImage($black_point, $gamma, $white_point);} // 調整色階
  public function modulate($brightness, $saturation, $hue){$this->image->modulateImage($brightness, $saturation, $hue);} // 調整亮度、飽和度、色調
public function charcoal($radius, $sigma){$this->image->charcoalImage($radius, $sigma);} // 素描
  public function oil_paint($radius){$this->image->oilPaintImage($radius);} // 油畫效果
public function flop(){$this->image->flopImage();} // 水平翻轉
  public function flip(){$this->image->flipImage();} // 垂直翻轉
}</pre>
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PHP PHP開發
實現 GIF 打水印PHP類庫

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