From 05d31cbeeb5683ba7b351d462302a46a9026c686 Mon Sep 17 00:00:00 2001
From: Stephan Unverwerth <s.unverwerth@gmx.de>
Date: Sun, 3 Jan 2021 19:37:34 +0100
Subject: LibTTF: Add hack for recognizing fixed-width fonts

---
 Userland/Libraries/LibTTF/Font.cpp | 7 +++++++
 Userland/Libraries/LibTTF/Font.h   | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

(limited to 'Userland')

diff --git a/Userland/Libraries/LibTTF/Font.cpp b/Userland/Libraries/LibTTF/Font.cpp
index aa7166683b..81efaa7ca9 100644
--- a/Userland/Libraries/LibTTF/Font.cpp
+++ b/Userland/Libraries/LibTTF/Font.cpp
@@ -510,6 +510,13 @@ u16 Font::weight() const
     return 400;
 }
 
+bool Font::is_fixed_width() const
+{
+    // FIXME: Read this information from the font file itself.
+    // FIXME: Although, it appears some application do similar hacks
+    return glyph_metrics(glyph_id_for_codepoint('.'), 1, 1).advance_width == glyph_metrics(glyph_id_for_codepoint('X'), 1, 1).advance_width;
+}
+
 int ScaledFont::width(const StringView& string) const
 {
     Utf8View utf8 { string };
diff --git a/Userland/Libraries/LibTTF/Font.h b/Userland/Libraries/LibTTF/Font.h
index d1e96c0267..2448e8f6af 100644
--- a/Userland/Libraries/LibTTF/Font.h
+++ b/Userland/Libraries/LibTTF/Font.h
@@ -78,7 +78,7 @@ public:
     String family() const;
     String variant() const;
     u16 weight() const;
-    bool is_fixed_width() const { return false; } /* TODO */
+    bool is_fixed_width() const;
 
 private:
     enum class Offsets {
-- 
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