From 696bcd43671089f9fb38e1434e5771e24bffda44 Mon Sep 17 00:00:00 2001
From: Trevor Buckner <calculuschild@gmail.com>
Date: Thu, 22 Aug 2024 12:46:56 -0400
Subject: [PATCH] Expose src url in --HB_src

Decided to do this for *all* images, not just those being injected. In case someone wants to automatically apply wrapping to images inside a stat block, etc.
---
 shared/naturalcrit/markdown.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/shared/naturalcrit/markdown.js b/shared/naturalcrit/markdown.js
index be2f56af9..3be8108e4 100644
--- a/shared/naturalcrit/markdown.js
+++ b/shared/naturalcrit/markdown.js
@@ -102,6 +102,20 @@ renderer.link = function (href, title, text) {
 	return out;
 };
 
+// Expose `src` attribute as `--HB_src` to make the URL accessible via CSS
+renderer.image = function (href, title, text) {
+	href = cleanUrl(href);
+	if (href === null)
+		return text;
+
+	let out = `<img src="${href}" alt="${text}" style="--HB_src:url(${href});"`;
+	if (title)
+		out += ` title="${title}"`;
+
+	out += '>';
+	return out;
+}
+
 // Disable default reflink behavior, as it steps on our variables extension
 tokenizer.def = function () {
 	return undefined;