From 049695fa070c23580291949053b6d1faf8ffd749 Mon Sep 17 00:00:00 2001
From: Michael Drake <michael.drake@codethink.co.uk>
Date: Fri, 29 Jun 2018 15:03:10 +0100
Subject: Box: Add helper to check if box is first child.

---
 content/handlers/html/box.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'content/handlers')

diff --git a/content/handlers/html/box.h b/content/handlers/html/box.h
index f096b6714..0952b841b 100644
--- a/content/handlers/html/box.h
+++ b/content/handlers/html/box.h
@@ -366,4 +366,15 @@ bool box_normalise_block(
 		const struct box *root,
 		struct html_content *c);
 
+/**
+ * Check if layout box is a first child.
+ *
+ * \param[in] b  Box to check.
+ * \return true iff box is first child.
+ */
+static inline bool box_is_first_child(struct box *b)
+{
+	return (b->parent == NULL || b == b->parent->children);
+}
+
 #endif
-- 
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