From 64f938b449b7ff5e53b6a06ed943bf9dedc1014b Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Sun, 8 Dec 2019 11:15:04 +0100
Subject: =?UTF-8?q?Improve=20testers=20=E2=99=BB?=
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---
 src/layout/mod.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'src')

diff --git a/src/layout/mod.rs b/src/layout/mod.rs
index afdab1ef..7f9b9b95 100644
--- a/src/layout/mod.rs
+++ b/src/layout/mod.rs
@@ -45,6 +45,21 @@ pub struct Layout {
     pub actions: Vec<LayoutAction>,
 }
 
+impl Layout {
+    /// Returns a vector with all used font indices.
+    pub fn find_used_fonts(&self) -> Vec<usize> {
+        let mut fonts = Vec::new();
+        for action in &self.actions {
+            if let LayoutAction::SetFont(index, _) = action {
+                if !fonts.contains(index) {
+                    fonts.push(*index);
+                }
+            }
+        }
+        fonts
+    }
+}
+
 /// The general context for layouting.
 #[derive(Debug, Clone)]
 pub struct LayoutContext<'a, 'p> {
-- 
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