Added permalink icons.

Author: Mistralys

css/styles.css

@@ -94,6 +94,26 @@ A.anchor{
     visibility: hidden;
 }
 
+H1,H2,H3,H4,H5{
+    margin-left: -1.2rem;
+}
+H1:hover .permalink > SPAN,
+H2:hover .permalink > SPAN,
+H3:hover .permalink > SPAN,
+H4:hover .permalink > SPAN,
+H5:hover .permalink > SPAN{
+    visibility: visible;
+}
+A.permalink{
+    float: left;
+    text-decoration: none;
+    margin-right: 0.2rem;
+}
+
+A.permalink > SPAN{
+    visibility: hidden;
+}
+
 
 PRE CODE{color: #465760;}
 PRE .kw1 {color: #E06645; }

src/DocHeader.php

@@ -55,11 +55,31 @@ public function getLevel(): int
         return $this->level;
     }
 
-    public function replace(string $subject) : string
+    /**
+     * Replaces the <hx> tag in the subject string with the adjusted
+     * markup for the permalink icon and jump anchor.
+     *
+     * @param string $subject
+     * @param DocFile $file
+     * @return string
+     */
+    public function replace(string $subject, DocFile $file) : string
     {
+        $template =
+            '<h%1$s>'.
+                '<a class="permalink" href="?doc=%3$s#%2$s">'.
+                    '<span>§</span>'.
+                '</a>'.
+                '<a class="anchor" id="%2$s"></a>';
+
         $new = str_replace(
             sprintf('<h%s>', $this->level),
-            sprintf('<h%s><a class="anchor" id="%s"></a>', $this->level, $this->id),
+            sprintf(
+                $template,
+                $this->level,
+                $this->id,
+                $file->getID()
+            ),
             $this->tag
         );