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)
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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.phpclass 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……
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