216 lines
9.1 KiB
PHP
216 lines
9.1 KiB
PHP
<?php
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/**
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* 生成图片水印
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*
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* @package Watermark
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* @author DEFE
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* @version 1.2.0
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* @link http://defe.me
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*/
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class Watermark_Plugin implements Typecho_Plugin_Interface
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{
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/**
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* 激活插件方法,如果激活失败,直接抛出异常
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*
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* @access public
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* @return void
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* @throws Typecho_Plugin_Exception
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*/
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public static function activate()
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{
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if(!function_exists('gd_info')){
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throw new Typecho_Plugin_Exception(_t('对不起, 您的主机没有PHP中开启GD库支持'));
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}
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Typecho_Plugin::factory('Widget_Abstract_Contents')->filter = array('Watermark_Plugin', 'parse');
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Helper::addAction('Watermark', 'Watermark_Action');
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$dir = __TYPECHO_ROOT_DIR__ . '/usr/img';
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if((is_dir($dir)|| @mkdir($dir, 0777)) && is_writable($dir)){
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return _t('插件已经激活，请正确设置插件！');
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}else {
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return _t('usr目录权限限制，无法使用缓存功能');
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}
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}
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/**
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* 禁用插件方法,如果禁用失败,直接抛出异常
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*
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* @static
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* @access public
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* @return void
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* @throws Typecho_Plugin_Exception
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*/
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public static function deactivate(){
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Helper::removeAction('Watermark');
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}
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/**
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* 获取插件配置面板
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*
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* @access public
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* @param Typecho_Widget_Helper_Form $form 配置面板
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* @return void
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*/
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public static function config(Typecho_Widget_Helper_Form $form){
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$vm_type= new Typecho_Widget_Helper_Form_Element_Checkbox('vm_type',
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array( 'pic' => '图片',
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'text' => '文字'),
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array('pic'), '水印类型');
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$form->addInput($vm_type);
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$vm_pos_pic= new Typecho_Widget_Helper_Form_Element_Select('vm_pos_pic',array('随机','顶端左侧',
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'顶端中间','顶端右侧','中部左侧','正中','中部右侧','底部左侧','底部中间','底部右侧'),9,_t('水印图片位置'));
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$form->addInput($vm_pos_pic);
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$vm_pos_text= new Typecho_Widget_Helper_Form_Element_Select('vm_pos_text',array('随机','顶端左侧',
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'顶端中间','顶端右侧','中部左侧','正中','中部右侧','底部左侧','底部中间','底部右侧'),9,_t('水印文字位置'));
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$form->addInput($vm_pos_text);
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$file_list = scandir(dirname(__FILE__));
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if($file_list){
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$images = array();
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$fonts = array();
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foreach ($file_list as $file){
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$ext = '';
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$part = explode('.', $file);
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if (($length = count($part)) > 1) {
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$ext = strtolower($part[$length - 1]);
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}
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if('ttf' == $ext || 'ttc' == $ext) $fonts[]=$file;
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if(in_array($ext, array('png','gif','jpg'))) $images[] = $file;
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}
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if(count($images)>0){
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$img_msg = "可用图片: <span>". implode('</span>，<span>', $images)."</span>请复制图片文件名到上方文本框中";
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}else{
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$img_msg = "目录中没有图片文件，无法使用图片水印功能";
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}
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if(count($fonts)>0){
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$font_msg = "可用字体: <span>". implode('</span>，<span>', $fonts)."</span>请复制字体文件名到输入框中";
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}else{
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$font_msg = "插件目录下没有字体文件，无法使用文字水印";
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}
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}else{
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$img_msg = "插件目录下的图片文件名，注意大小写。";
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$font_msg = "本插件目录下的字体文件。";
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}
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$vm_pic = new Typecho_Widget_Helper_Form_Element_Text('vm_pic', NULL, 'WM.png',
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_t('水印图片'),_t($img_msg));
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$vm_pic->input->setAttribute('class', 'mini');
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$form->addInput($vm_pic);
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$vm_text = new Typecho_Widget_Helper_Form_Element_Text('vm_text',null,"Typecho)))",
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_t('水印文字'));
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$form->addInput($vm_text);
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$vm_font = new Typecho_Widget_Helper_Form_Element_Text('vm_font', NULL, 'lh.ttf',
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_t('文字字体'),_t($font_msg));
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$vm_font->input->setAttribute('class', 'mini');
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$form->addInput($vm_font);
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$vm_size = new Typecho_Widget_Helper_Form_Element_Text('vm_size', NULL, '16',
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_t('文字大小'));
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$vm_size->input->setAttribute('class', 'mini');
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$form->addInput($vm_size);
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$vm_color = new Typecho_Widget_Helper_Form_Element_Text('vm_color', NULL, '255,0,0',
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_t('文字颜色'), _t('格式：255,255,255 或 #FF0000'));
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$vm_color->input->setAttribute('class', 'mini');
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$form->addInput($vm_color);
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$vm_m_x = new Typecho_Widget_Helper_Form_Element_Text('vm_m_x', NULL, '0',
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_t('水平微调'), _t('调节文字的水平位置，输入整数，可以为负'));
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$vm_m_x->input->setAttribute('class', 'mini');
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$form->addInput($vm_m_x->addRule('isInteger', _t('必须是纯数字')));
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$vm_m_y = new Typecho_Widget_Helper_Form_Element_Text('vm_m_y', NULL, '0',
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_t('竖直微调'), _t('调节文字的竖直位置，输入整数，可以为负'));
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$vm_m_y->input->setAttribute('class', 'mini');
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$form->addInput($vm_m_y->addRule('isInteger', _t('必须是纯数字')));
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$vm_width = new Typecho_Widget_Helper_Form_Element_Text('vm_width', NULL, '0',
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_t('调整图片宽度'), _t('为了使水印效果一致，可以限制图片的宽度，建议和缓存搭配使用。设为 0 则不调整。'));
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$vm_width->input->setAttribute('class', 'mini');
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$form->addInput($vm_width->addRule('isInteger', _t('必须是纯数字')));
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$vm_alpha = new Typecho_Widget_Helper_Form_Element_Text('vm_alpha', NULL, '0',
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_t('图片透明度'), _t('取0-100之间的整数，0为不透明，100为全透明。'));
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$vm_alpha->input->setAttribute('class', 'mini');
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$form->addInput($vm_alpha->addRule('isInteger', _t('必须是纯数字')));
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$dir = __TYPECHO_ROOT_DIR__ . '/usr/img';
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if(is_dir($dir) && is_writable($dir)){
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$url = Typecho_Widget::widget('Widget_Options')->index . "/action/Watermark?clear";
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$msg = '清除缓存文件可以 <a href="'.$url.'" target="_blank"> 点击这里 </a> 执行清空缓存功能。';
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}else{
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$msg = '缓存已清空，或是未用缓存（如果启用缓存后每次设置均出现此提示，请检查目录权限）';
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}
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$vm_cache= new Typecho_Widget_Helper_Form_Element_Radio('vm_cache',
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array( 'cache' => '使用缓存',
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'nocache' => '不使用缓存'),
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'nocache', '使用缓存',_t($msg));
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$form->addInput($vm_cache);
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}
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/**
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* 个人用户的配置面板
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*
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* @access public
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* @param Typecho_Widget_Helper_Form $form
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* @return void
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*/
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public static function personalConfig(Typecho_Widget_Helper_Form $form){}
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/**
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* 解析内容
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*
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* @access public
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* @param Typecho_Widget_Helper_Form $form
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* @return void
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*/
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public static function parse($value_o)
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{
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if('index.php' === basename($_SERVER['SCRIPT_NAME'])){
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$options = Typecho_Widget::widget('Widget_Options');
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$cache_ab = $options->plugin('Watermark')->vm_cache?$options->plugin('Watermark')->vm_cache:FALSE;
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$value = $value_o['text'];
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if($value_o['isMarkdown']){
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$regex = "/\[\d{1,}\]:\s(.*?.(gif|jpg|png))/";
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}else{
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$regex = "/<img.*?src=\"(.*?)\".*?[\/]?>/";
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}
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preg_match_all($regex, $value, $matches);
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$count = count($matches[0]);
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for($i = 0;$i < $count;$i++) {
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$url = $matches[1][$i];
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$m = parse_url($url);
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$ext = strtolower(pathinfo($m['path'], PATHINFO_EXTENSION));
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if( $ext=='gif' && self::IsAnimatedGif( Watermark_Action::lujin(__TYPECHO_ROOT_DIR__ .$m['path']))){ continue;}//避开动态gif
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$cache_file = 'usr/img/'.md5($m['path']).'.'.$ext;
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if('cache' == $cache_ab && file_exists('./'.$cache_file)){
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$mUrl = $options->siteUrl . $cache_file;
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}else{
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$mUrl = $options->index.'/action/Watermark?mark='.base64_encode($m['path']);
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}
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$url = str_replace($url, $mUrl, $matches[0][$i]);
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$value = str_replace($matches[0][$i], $url, $value);
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}
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$value_o['text'] = $value;
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}
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return $value_o;
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}
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public static function IsAnimatedGif($filename){
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$fp = fopen($filename, 'rb');
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$size = filesize($filename)>1024?1024:filesize($filename);
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$filecontent = fread($fp, $size);
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fclose($fp);
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return strpos($filecontent,chr(0x21).chr(0xff).chr(0x0b).'NETSCAPE2.0') === FALSE?0:1;
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}
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}
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