From 23d108c8e099798dc4d35ce9cbcd3e37fb50f3b2 Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Sat, 2 Apr 2022 21:55:25 +0200
Subject: Font fallback

---
 src/eval/styles.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'src/eval/styles.rs')

diff --git a/src/eval/styles.rs b/src/eval/styles.rs
index 7fcaf734..a0dc263c 100644
--- a/src/eval/styles.rs
+++ b/src/eval/styles.rs
@@ -6,7 +6,7 @@ use std::sync::Arc;
 use super::{Args, Content, Func, Span, Value};
 use crate::diag::{At, TypResult};
 use crate::library::layout::PageNode;
-use crate::library::text::ParNode;
+use crate::library::text::{FontFamily, ParNode, TextNode};
 use crate::Context;
 
 /// A map of style properties.
@@ -48,6 +48,17 @@ impl StyleMap {
         }
     }
 
+    /// Set a font family composed of a preferred family and existing families
+    /// from a style chain.
+    pub fn set_family(&mut self, family: FontFamily, existing: StyleChain) {
+        self.set(
+            TextNode::FAMILY,
+            std::iter::once(family)
+                .chain(existing.get_ref(TextNode::FAMILY).iter().cloned())
+                .collect(),
+        );
+    }
+
     /// Set a recipe.
     pub fn set_recipe(&mut self, node: TypeId, func: Func, span: Span) {
         self.recipes.push(Recipe { node, func, span });
-- 
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