Imagick 添加文字水印参说明+安装过程+gif图片添加水印+缩略图(综合整理)

Imagick参数说明以及一些例子：

描述：

bool ImagickDraw::setGravity ( int $gravity )

设置文字水印的位置

 

参数：

Gravity参数只能是以下常量：

imagick::GRAVITY_NORTHWEST　//左下
imagick::GRAVITY_NORTH               //左边居中
imagick::GRAVITY_EASNORTHT　//左顶
imagick::GRAVITY_WEST　　　　  //底部居中
imagick::GRAVITY_CENTER　　　 //居中
imagick::GRAVITY_EAST                   //顶部居中
imagick::GRAVITY_SOUTHWEST　//对应右下角
imagick::GRAVITY_SOUTH　　　　//右居中
imagick::GRAVITY_SOUTHEAST　　//对应右上角

示例１

<?
$text  =  "DJ Mike" ;
$font  =  "Bookman-DemiItalic" ;
$pointsize  =  100 ;
$depth  =  4 ;

# make a transparent pallete
$pallete  = new  Imagick ;
$pallete -> newimage ( 450 , 105 ,  "transparent" );
# set pallet format to gif
$pallete -> setimageformat ( "gif" );

# make a draw object with settings
$draw  = new  imagickdraw ();
$draw -> setgravity ( imagick :: GRAVITY_CENTER );
$draw -> setfont ( " $font " );
$draw -> setfontsize ( $pointsize );

# set font color white
$draw -> setfillcolor ( "#ffffff" );
# offset annotate
$pallete -> annotateImage  (  $draw , $depth  ,- $depth - 3 ,  0 ,  $text  );
$pallete -> annotateImage  (  $draw ,- $depth  ,- $depth - 3 ,  0 ,  $text  );

# set font color black
$draw -> setfillcolor ( "#000000" );
# offset annotate
$pallete -> annotateImage  (  $draw ,- $depth  , $depth - 2 ,  0 ,  $text  );
$pallete -> annotateImage  (  $draw , $depth  , $depth - 3 ,  0 ,  $text  );

# set font color blue
$draw -> setfillcolor ( "#0000ff" );
# center annotate on top of offset annotates
$pallete -> annotateImage  (  $draw , 0  , 0 ,  0 ,  $text  );

# blur
$pallete -> gaussianBlurImage (  2 ,  1.5  ); 

# output to browser
$pallete -> setImageFormat ( "gif" );
header (  "Content-Type: image/gif"  );
echo  $pallete ;
?>

示例２

<?
$text  =  "DJ Mike" ;
$font  =  "lokicola.ttf" ;
$fontsize  =  100 ;
$fontcolor  =  "#aa0000" ;
$glow_radius  =  15 ;
# Three glow colors
$glow  = array(  "#ff0000" ,  "#ff8800" ,  "#ffff00"  );

# moves text down
$offset  =  12 ;

# make a black pallete
$pallete  = new  Imagick ;
$pallete -> newimage ( 375 , 140 ,  "#000000" );
# set pallet format to gif
$pallete -> setimageformat ( "gif" );

# make a draw object with settings
$draw  = new  imagickdraw ();
$draw -> setgravity ( imagick :: GRAVITY_CENTER );
$draw -> setfont ( " $font " );
$draw -> setfontsize ( $fontsize );

# Loop through glow colors
foreach(  $glow  as  $var )
{
  $draw -> setfillcolor ( " $var " );
  $pallete -> annotateImage  (  $draw , 0  , $offset ,  0 ,  $text  );
  $pallete -> annotateImage  (  $draw , 0  , $offset ,  0 ,  $text  );
  $pallete -> BlurImage (  $glow_radius ,  $glow_radius  ); 
}

# top layer
$draw -> setfillcolor ( " $fontcolor " );
# center annotate on top of offset annotates
$pallete -> annotateImage  (  $draw , 0  , $offset ,  0 ,  $text  );

# output to browser
$pallete -> setImageFormat ( "gif" );
header (  "Content-Type: image/gif"  );
echo  $pallete ;
?>

linux下 安装 ImageMagick 及其 php imagick扩展; 

安装之前必须安装lib 

freetype-2.4.0.tar.gz  
libtool-2.2.6a.tar.gz  
jpegsrc.v6b.tar.gz  
libpng-1.2.12.tar.gz  
zlib-1.2.8.tar.gz  


1 下载ImageMagick-6.7.1-6 
wget ftp://ftp.u-aizu.ac.jp/pub/graphics/image/ImageMagick/imagemagick.org/ImageMagick.tar.gz 
[root@localhost zhangminsong]# ll 
total 12380 
-rw-r--r-- 1 root root 12656433 Aug 18 16:47 ImageMagick.tar.gz 

2 解压 
[root@localhost zhangminsong]# tar -xzvf ImageMagick.tar.gz 
3 编译安装 
[root@localhost zhangminsong]# cd  ImageMagick-6.7.1-6 
[root@localhost ImageMagick-6.7.1-6]# ./configure -prefix=/usr/local/imagemagick -enable-lzw -with-modules && make && make install 
查看一下 
[root@localhost zhangminsong]# convert -version 
Version: ImageMagick 6.7.1-6 2011-08-17 Q16 http://www.imagemagick.org 
Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC 
Features: OpenMP 
测试一下 
[root@localhost ImageMagick-6.7.1-6]# pwd 
/root/zhangminsong/ImageMagick-6.7.1-6 
[root@localhost ImageMagick-6.7.1-6]# cd images/ 
[root@localhost images]# convert -sample 25%x25% wizard.jpg test.jpg 

ok了 

开始装imagick的PHP扩展 
注意：安装imagick扩展时需要PHP >= 5.1.3，ImageMagick >= 6.2.4 
获取imagick 
[root@localhost zhangminsong]# wget http://pecl.php.net/get/imagick-3.1.0RC2.tgz 
--2011-08-18 17:44:48--  http://pecl.php.net/get/imagick-3.1.0b1.tgz 
Resolving pecl.php.net... 76.75.200.106 
Connecting to pecl.php.net|76.75.200.106|:80... connected. 
HTTP request sent, awaiting response... 200 OK 
Length: 93269 (91K) [application/octet-stream] 
Saving to: `imagick-3.1.0b1.tgz' 
100%[===============================================================================================================================================================>] 93,269      55.6K/s   in 1.6s   
2011-08-18 17:44:51 (55.6 KB/s) - `imagick-3.1.0b1.tgz' saved [93269/93269] 

解压 
[root@localhost zhangminsong]# tar zxvf imagick-3.1.0RC2.tgz 
package.xml 
imagick-3.1.0b1/examples/polygon.php 
imagick-3.1.0b1/examples/captcha.php 
imagick-3.1.0b1/examples/thumbnail.php 
imagick-3.1.0b1/examples/watermark.php 
imagick-3.1.0b1/config.m4 
imagick-3.1.0b1/config.w32 
imagick-3.1.0b1/CREDITS 
imagick-3.1.0b1/imagick.c 
imagick-3.1.0b1/imagick_class.c 
imagick-3.1.0b1/imagickdraw_class.c 
imagick-3.1.0b1/imagickpixel_class.c 
imagick-3.1.0b1/imagickpixeliterator_class.c 
imagick-3.1.0b1/imagick_helpers.c 
imagick-3.1.0b1/imagick_file.c 
imagick-3.1.0b1/php_imagick.h 
imagick-3.1.0b1/php_imagick_defs.h 
imagick-3.1.0b1/php_imagick_helpers.h 
imagick-3.1.0b1/php_imagick_macros.h 
imagick-3.1.0b1/php_imagick_shared.h 
imagick-3.1.0b1/php_imagick_file.h 
imagick-3.1.0b1/TODO 
imagick-3.1.0b1/INSTALL 
imagick-3.1.0b1/ChangeLog 

phpize 
[root@localhost zhangminsong]# cd imagick-3.1.0RC2 
[root@localhost imagick-3.1.0b1]# /opt/modules/php5.3.5/bin/phpize 
Configuring for: 
PHP Api Version:         20090626 
Zend Module Api No:      20090626 
Zend Extension Api No:   220090626 
配置编译 
[root@localhost zhangminsong]# ./configure --with-php-config=/opt/modules/php5.3.5/bin/php-config --with-imagick=/usr/local/imagemagick 

*此处如果出错，请执行 
ln -s /usr/local/imagemagick/include/ImageMagick-6 /usr/local/imagemagick/include/ImageMagick 

[root@localhost zhangminsong]# make&&make install 

*此处如果出错，请执行 
export  PKG_CONFIG_PATH=/********/imagemagick/lib/pkgconfig 
重新编译。ok 

编译成功后会在php 扩展目录生成imagick.so 
我的路径是/opt/modules/php5.3.5/lib/php/extensions/no-debug-non-zts-20090626/ 
然后再php.ini里面 加上 
extension="imagick.so" 
重启php phpinfo()看看 
安装完成。。。。 
出处： 






PHP 使用 Imagick 裁切/生成缩略图/添加水印, 自动检测和处理 GIF：


下面是转摘自另一位博客有人的imagick 自定义封装class 不过有一些漏洞和安全问题，建议仅作思路参考，不要直接使用

（下面内容原始博文地址http://blog.csdn.net/iua1024/article/details/7211416）

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:

 

PHP代码：

<?php  //imagick.class.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, $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, $style=array())  
    {  
        //$width = $this->image->getImageWidth()-$x;  
        //$height = $this->image->getImageHeight()-$y;  
        //if($width<=0 || $height<=0) return;  
        $draw = new ImagickDraw();  
        $draw->setgravity(imagick::GRAVITY_SOUTHWEST);
        if(isset($style['font'])) $draw->setFont($style['font']);  
        if(isset($style['font_size'])) $draw->setFontSize($style['font_size']);  //字体大小
        if(isset($style['fill_color'])) $draw->setFillColor($style['fill_color']); // 字体颜色
        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  
  
}  
?>

使用方法：

include 'imagick.class.php';  
  
$image = new lib_image_imagick();  
$image->open('a.gif');  //原始图片
$image->resize_to(100, 100, 'scale_fill'); //缩略图 生成方法  
$image->add_text('1024i.com', 10, 20);  //打印文字 方法
$image->add_watermark('1024i.gif', 10, 50);  //图片添加水印方法
$image->save_to('x.gif');  //新图片保存地址，如果不保留原始图片可 直接写原路径进行覆盖即可

该文章内容收集自网上多位博主的日志文章整理而成……