From 312015e8f74ca1738e7160e5d66cad9dcb07c6fd Mon Sep 17 00:00:00 2001
From: Volpeon <git@volpeon.ink>
Date: Wed, 29 Dec 2021 15:51:49 +0100
Subject: Initial gallery macro

---
 filters/macros.lua | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'filters')

diff --git a/filters/macros.lua b/filters/macros.lua
index 9e9d954..dc04cfd 100644
--- a/filters/macros.lua
+++ b/filters/macros.lua
@@ -1,7 +1,39 @@
+function note(el)
+    el.classes = pandoc.List()
+    el.classes:insert("c-note")
+    return el
+end
+
+function gallery(el)
+    el.classes = pandoc.List()
+    el.classes:insert("c-gallery")
+
+    local cur = pandoc.Div(pandoc.List(), { class = "c-gallery__current" })
+    local imageList = pandoc.Div(pandoc.List(), { class = "c-gallery__items" })
+
+    pandoc.walk_block(el, {
+        Image = function(iel)
+            iel.classes = pandoc.List()
+            iel.classes:insert("c-gallery__img")
+
+            local lel = pandoc.Link(iel, iel.src)
+            lel.classes = pandoc.List()
+            lel.classes:insert("c-gallery__item")
+
+            imageList.content:insert(lel)
+        end,
+    })
+
+    el.content = { cur, imageList }
+
+    return el
+end
+
 function Div(el)
     if el.classes:includes("note") then
-        el.classes = pandoc.List()
-        el.classes:insert("c-note")
+        el = note(el)
+    elseif el.classes:includes("gallery") then
+        el = gallery(el)
     end
 
     return el
-- 
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