Minor update (#1451)

* Update

- 更新 Windows 和 Linux 系统中文本编辑器样式问题（为代码块中添加中文后备字体修正样式）

* Update

- 缩略图支持识别 avif 图片（具体可参考https://en.wikipedia.org/wiki/AVIF ）

admin/css/style.css

@@ -4,13 +4,13 @@
 /** Typecho 全局样式 */
 html { height: 100%; }
 
-body { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; background: #F6F6F3; color: #444; font-size: 87.5%; line-height: 1.5; }
+body { font-family: 'Helvetica Neue', Helvetica, Arial, -apple-system, system-ui, sans-serif; background: #F6F6F3; color: #444; font-size: 87.5%; line-height: 1.5; }
 
 a { color: #467B96; text-decoration: none; }
 
 a:hover { color: #499BC3; text-decoration: underline; }
 
-code, pre, .mono { font-family: Menlo, Monaco, Consolas, "Courier New", monospace; }
+code, pre, .mono { font-family: 'SF Mono', Menlo, Monaco, Consolas, 'Courier New', -apple-system, system-ui, monospace; }
 
 .p { margin: 1em 0; }
 

var/Widget/Base/Contents.php

@@ -554,7 +554,7 @@ class Contents extends Base implements QueryInterface
 
             //增加数据信息
             $value['attachment'] = new Config($content);
-            $value['attachment']->isImage = in_array($content['type'], ['jpg', 'jpeg', 'gif', 'png', 'tiff', 'bmp', 'webp']);
+            $value['attachment']->isImage = in_array($content['type'], ['jpg', 'jpeg', 'gif', 'png', 'tiff', 'bmp', 'webp', 'avif']);
             $value['attachment']->url = Upload::attachmentHandle($value);
 
             if ($value['attachment']->isImage) {

var/Widget/Themes/Rows.php

@@ -45,7 +45,7 @@ class Rows extends Widget
                     }
 
                     $screen = array_filter(glob($theme . '/*'), function ($path) {
-                        return preg_match("/screenshot\.(jpg|png|gif|bmp|jpeg|webp)$/i", $path);
+                        return preg_match("/screenshot\.(jpg|png|gif|bmp|jpeg|webp|avif)$/i", $path);
                     });
 
                     if ($screen) {