PHP Imagick完美实现图片裁切、生成缩略图、添加水印


Posted in PHP onFebruary 22, 2016

本文实例讲解了PHP使用Imagick 裁切、生成缩略图、添加水印自动检测和处理,支持gif,分享给大家供大家参考,具体内容如下

调用方式:

include 'imagick.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 ( <a href="http://www.1024i.com" target="_blank">http://www.1024i.com</a> ) 
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;  
}  
}  
 
// 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  
}

希望本文所述对大家学习php程序设计有所帮助。

PHP 相关文章推荐
xml+php动态载入与分页
Oct 09 PHP
PHP 魔术函数使用说明
May 14 PHP
字母顺序颠倒而单词顺序不变的php代码
Aug 08 PHP
PHP的mysqli_query参数MYSQLI_STORE_RESULT和MYSQLI_USE_RESULT的区别
Sep 29 PHP
[原创]php逐行读取txt文件写入数组的方法
Jul 02 PHP
YII CLinkPager分页类扩展增加显示共多少页
Jan 29 PHP
深入分析PHP优化及注意事项
Jul 04 PHP
微信支付开发发货通知实例
Jul 12 PHP
PHP 中TP5 Request 请求对象的实例详解
Jul 31 PHP
PHP性能测试工具xhprof安装与使用方法详解
Apr 29 PHP
PHP耦合设计模式实例分析
Aug 08 PHP
PHP code 验证码生成类定义和简单使用示例
May 27 PHP
PHP实现linux命令tail -f
Feb 22 #PHP
PHP设计模式之观察者模式实例
Feb 22 #PHP
PHP编写RESTful接口的方法
Feb 21 #PHP
PHP常见漏洞攻击分析
Feb 21 #PHP
php采集神器cURL使用方法详解
Feb 19 #PHP
PHP 使用 Imagick 裁切/生成缩略图/添加水印自动检测和处理 GIF
Feb 19 #PHP
PHP利用imagick生成组合缩略图
Feb 19 #PHP
You might like
制作美丽的拉花
2021/03/03 冲泡冲煮
PHP的分页功能
2007/03/21 PHP
php数组函数序列之in_array() - 查找数组中是否存在指定值
2011/11/07 PHP
PHP 提取图片img标记中的任意属性的简单实例
2013/12/10 PHP
php使用正则表达式进行字符串搜索的方法
2015/03/23 PHP
PHP邮箱验证示例教程
2016/06/01 PHP
php中__toString()方法用法示例
2016/12/07 PHP
javascript add event remove event
2008/04/07 Javascript
解析DHTML,JavaScript,DOM,BOM以及WEB标准的描述
2013/06/19 Javascript
JS中表单的使用小结
2014/01/11 Javascript
js的参数有长度限制吗?发现不能超过2083个字符
2014/04/20 Javascript
jQuery产品间断向下滚动效果核心代码
2014/05/08 Javascript
JavaScript中消除闭包的一般方法介绍
2015/03/16 Javascript
JavaScript动态提示输入框输入字数的方法
2015/07/27 Javascript
js正则表达式惰性匹配和贪婪匹配用法分析
2016/12/26 Javascript
php register_shutdown_function函数详解
2017/07/23 Javascript
JS实现的按钮点击颜色切换功能示例
2017/10/19 Javascript
Vue.js实现分页查询功能
2020/11/15 Javascript
使用pm2自动化部署node项目的方法步骤
2019/01/28 Javascript
详解微信小程序支付流程与梳理
2019/07/16 Javascript
Python中逗号的三种作用实例分析
2015/06/08 Python
Python模拟百度登录实例详解
2016/01/20 Python
Python书单 不将就
2017/07/11 Python
Python使用Windows API创建窗口示例【基于win32gui模块】
2018/05/09 Python
Python通过paramiko远程下载Linux服务器上的文件实例
2018/12/27 Python
Python2.x与3​​.x版本有哪些区别
2020/07/09 Python
基于python图书馆管理系统设计实例详解
2020/08/05 Python
北美最大的手工艺品零售商之一:Michaels Stores
2019/02/27 全球购物
PHP如何对用户密码进行加密
2014/07/31 面试题
国际贸易专业个人鉴定
2014/02/22 职场文书
离婚案件答辩状
2015/05/22 职场文书
网聊搭讪开场白
2015/05/28 职场文书
《富饶的西沙群岛》教学反思
2016/02/16 职场文书
Shell脚本一键安装Nginx服务自定义Nginx版本
2022/03/20 Servers
实战Python爬虫爬取酷我音乐
2022/04/11 Python
Go Grpc Gateway兼容HTTP协议文档自动生成网关
2022/06/16 Golang