From 35875b68f584736086a22c6b88c7455084457681 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 17 May 2020 17:45:12 +0200
Subject: [PATCH] LibGfx: Add Font::width(u32* codepoints, size_t)

This allows you to measure the width of a UTF-32 sequence.
---
 Libraries/LibGfx/Font.cpp | 10 ++++++++++
 Libraries/LibGfx/Font.h   |  1 +
 2 files changed, 11 insertions(+)

diff --git a/Libraries/LibGfx/Font.cpp b/Libraries/LibGfx/Font.cpp
index ebb1933ab2..cb3861474f 100644
--- a/Libraries/LibGfx/Font.cpp
+++ b/Libraries/LibGfx/Font.cpp
@@ -255,4 +255,14 @@ int Font::width(const Utf8View& utf8) const
     return width;
 }
 
+int Font::width(const u32* codepoints, size_t length) const
+{
+    if (length == 0)
+        return 0;
+    int width = (length - 1) * glyph_spacing();
+    for (size_t i = 0; i < length; ++i)
+        width += glyph_or_emoji_width(codepoints[i]);
+    return width;
+}
+
 }
diff --git a/Libraries/LibGfx/Font.h b/Libraries/LibGfx/Font.h
index 1580f25e11..b71c2519ab 100644
--- a/Libraries/LibGfx/Font.h
+++ b/Libraries/LibGfx/Font.h
@@ -95,6 +95,7 @@ public:
 
     int width(const StringView&) const;
     int width(const Utf8View&) const;
+    int width(const u32* codepoints, size_t) const;
 
     String name() const { return m_name; }
     void set_name(const StringView& name) { m_name = name; }