File: /www/sites/cbgdh_com/index/wp-content/themes/onenav/inc/functions/io-letter-ico.php
<?php
/*
* @Author: iowen
* @Author URI: https://www.iowen.cn/
* @Date: 2022-06-26 14:42:58
* @LastEditors: iowen
* @LastEditTime: 2024-11-18 17:59:09
* @FilePath: /onenav/inc/functions/io-letter-ico.php
* @Description:
*/
/**
* 首字母头像
* @param string $text
* @param int $size
* @param bool $show
* @return string
*/
function io_letter_ico( $text, $size = 100, $show = true ){
$total = unpack('L', hash('adler32', $text, true))[1];
$hue = $total % 360;
list($r, $g, $b) = hsv2rgb($hue / 360, io_get_option('letter_ico_s', 40)/100, io_get_option('letter_ico_b', 90)/100);
list($r1, $g1, $b1) = hsv2rgb(($hue - 45) / 360, .5, .9);
list($r2, $g2, $b2) = hsv2rgb(($hue + 45) / 360, .5, .9);
$bg = "rgb({$r},{$g},{$b})";
$bg1 = "rgb({$r1},{$g1},{$b1})";
$bg2 = "rgb({$r2},{$g2},{$b2})";
$font_color = "#ffffff";
$first = mb_strtoupper(mb_substr($text, 0, 1));
$half_size = $size / 2;
$circle1 = mb_substr($total, 0, 2);//$total % $size;
$circle2 = mb_substr($total, -2);//$total % $half_size;
$src = '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="'.$size.'" height="'.$size.'">
<rect fill="'.$bg.'" x="0" y="0" width="'.$size.'" height="'.$size.'"></rect>
<circle fill="'.$bg1.'" cx="'.$circle1.'" cy="'.($circle1 / 2).'" r="'.($size * .6).'" opacity=".4"></circle>
<circle fill="'.$bg2.'" cx="'.$circle2.'" cy="'.($circle2 * 2).'" r="'.($size * .5).'" opacity=".6"></circle>
<text x="'.$half_size.'" y="'.$half_size.'" font-size="'.$half_size.'" text-copy="fast" fill="'
.$font_color.'" text-anchor="middle" text-rights="admin" alignment-baseline="central" font-family="\'PingFang SC\',\'Microsoft Yahei\'">'.$first.'</text></svg>';
if($show){
return 'data:image/svg+xml;base64,' . base64_encode($src);
}
return $src;
}
function hsv2rgb($h, $s, $v){
$r = $g = $b = 0;
$i = floor($h * 6);
$f = $h * 6 - $i;
$p = $v * (1 - $s);
$q = $v * (1 - $f * $s);
$t = $v * (1 - (1 - $f) * $s);
switch ($i % 6) {
case 0:
$r = $v;
$g = $t;
$b = $p;
break;
case 1:
$r = $q;
$g = $v;
$b = $p;
break;
case 2:
$r = $p;
$g = $v;
$b = $t;
break;
case 3:
$r = $p;
$g = $q;
$b = $v;
break;
case 4:
$r = $t;
$g = $p;
$b = $v;
break;
case 5:
$r = $v;
$g = $p;
$b = $q;
break;
}
return array(
floor($r * 255),
floor($g * 255),
floor($b * 255)
);
}
/**
* 挂载字母头像生成 js 文件
*/
function io_letter_avatar_js()
{
if (is_bookmark()) {
return;
}
$avatar_colors = array(
'#1abc9c',
'#2ecc71',
'#3498db',
'#9b59b6',
'#3fe95e',
'#16a085',
'#27ae60',
'#2980b9',
'#8e44ad',
'#fc3e50',
'#f1c40f',
'#e67e22',
'#e74c3c',
'#00bcd4',
'#95aa36',
'#f39c12',
'#d35400',
'#c0392b',
'#b2df1e',
'#7ffc8d'
);
?><script>(function(a,b){a.ioLetterAvatar=function(d,l,j){d=d||"";l=l||60;var h="<?php echo implode(' ', $avatar_colors); ?>".split(" "),f,c,k,g,e,i,t,m;f=String(d).toUpperCase();f=f?f.charAt(0):"?";if(a.devicePixelRatio){l=(l*a.devicePixelRatio)}c=parseInt((((f=="?"?72:f.charCodeAt(0))-64)*12345).toString().slice(0,5));k=c%(h.length-1);t=(c+1)%(h.length-1);m=(c-1)%(h.length-1);g=b.createElement("canvas");g.width=l;g.height=l;e=g.getContext("2d");e.fillStyle=j?j:h[k];e.fillRect(0,0,g.width,g.height); e.arc((c*180)%l,(c*150)%l, (c/120)%l ,0 ,360 );e.fillStyle=h[t];e.globalAlpha = .6;e.fill();e.save();e.beginPath();e.fillStyle=h[m];e.globalAlpha = .4;e.arc((c*20)%l,(c*50)%l, ((99999-c)/80)%l,0 ,360 );e.fill();e.font=Math.round(g.width/2)+"px 'Microsoft Yahei'";e.textAlign="center";e.fillStyle="#fff";e.globalAlpha = 1;e.fillText(f,l/2,l/1.5);i=g.toDataURL();g=null;return i}})(window,document);</script><?php
}
if(io_get_option('is_letter_ico',false) && io_get_option('first_api_ico',false)){
add_action('wp_head', 'io_letter_avatar_js');
}
/**
* 挂载字母头像替换
*/
function io_letter_avatar($avatar, $id_or_email = '', $size = '40', $default = '', $alt = '') {
// 匹配出原始头像中的信息
$src = io_get_html_tag_attribute($avatar, 'src');
if(!$src) return $avatar;
$alt = io_get_avatar_name($id_or_email);
$alt = $alt? $alt: io_get_html_tag_attribute($avatar, 'alt', $alt);
if(!$alt) return $avatar;
// 去除原始头像链接中的默认头像，改为输出 404
$src = htmlspecialchars_decode($src);
$src = preg_replace('/[\?\&]d[^&]+/is', '', $src);
$src = $src.'&d=404';
$src = htmlspecialchars($src);
$class = io_get_html_tag_attribute($avatar, 'class', 'avatar avatar-'.$size.' photo');
$title = io_get_html_tag_attribute($avatar, 'title', $alt);
$avatar = '<img src="'.$src.'" alt="'.$alt.'" title="'.$title.'" class="'.$class.' " height="'.$size.'" width="'.$size.'" onerror="onerror=null;src=ioLetterAvatar(alt,'.$size.')" />';
return $avatar;
}
if(!is_admin()) {
//add_filter('get_avatar', 'io_letter_avatar', 999999, 5);
}
/**
* 取出头像对应的用户名
*/
function io_get_avatar_name($id_or_email) {
if(have_comments()) {
return get_comment_author();
}
$user = null;
if(empty($id_or_email)) {
return null;
} else if(is_object($id_or_email)) {
if(!empty($id_or_email->comment_author)) {
return $id_or_email->comment_author;
} else if(!empty($id_or_email->user_id)) {
$id = (int) $id_or_email->user_id;
$user = get_user_by('id', $id);
}
} else if(is_numeric($id_or_email)) { // 是数字，尝试获取该 ID 对应的用户名
$id = (int) $id_or_email;
$user = get_user_by('id', $id);
} else if(is_string($id_or_email)) {
if (!filter_var($id_or_email, FILTER_VALIDATE_EMAIL)) { // 不是邮箱，当做用户名
return $id_or_email;
} else {
$user = get_user_by('email', $id_or_email);
}
}
// 尝试从用户对象中取出用户名
if(!empty($user) && is_object($user)) {
return $user->display_name;
}
return null;
}
/**
* 获取 Html 标签内的指定属性值
*
* @param string $html 原始 html 标签代码
* @param string $attribute 要获取的标签
* @param string $default 如果没有获取到，返回的默认值
* @return string
*/
function io_get_html_tag_attribute($html, $attribute, $default = '') {
if(preg_match('/'.$attribute.'\s*=\s*[\"\']([^\"\']*)[\"\']/isU', $html, $result)) {
if(isset($result[1])) return $result[1];
}
return $default;
}