From 3a754c01c5a0504b8f72b361d708b8568b3186b5 Mon Sep 17 00:00:00 2001
From: Dan Paulat <dpaulat@gmail.com>
Date: Mon, 9 Oct 2023 22:40:53 -0500
Subject: [PATCH] Set fontconfig environment in Linux

---
 .../source/scwx/qt/manager/font_manager.cpp    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/scwx-qt/source/scwx/qt/manager/font_manager.cpp b/scwx-qt/source/scwx/qt/manager/font_manager.cpp
index 2747fd4d..e7266a84 100644
--- a/scwx-qt/source/scwx/qt/manager/font_manager.cpp
+++ b/scwx-qt/source/scwx/qt/manager/font_manager.cpp
@@ -1,6 +1,7 @@
 #include <scwx/qt/manager/font_manager.hpp>
 #include <scwx/qt/manager/settings_manager.hpp>
 #include <scwx/qt/settings/text_settings.hpp>
+#include <scwx/util/environment.hpp>
 #include <scwx/util/logger.hpp>
 
 #include <filesystem>
@@ -50,6 +51,7 @@ class FontManager::Impl
 public:
    explicit Impl(FontManager* self) : self_ {self}
    {
+      InitializeEnvironment();
       InitializeFontCache();
       InitializeFontconfig();
       ConnectSignals();
@@ -58,6 +60,7 @@ public:
 
    void ConnectSignals();
    void FinalizeFontconfig();
+   void InitializeEnvironment();
    void InitializeFontCache();
    void InitializeFontconfig();
    void UpdateImGuiFont(types::FontCategory fontCategory);
@@ -385,6 +388,21 @@ void FontManager::LoadApplicationFont(types::Font        font,
    }
 }
 
+void FontManager::Impl::InitializeEnvironment()
+{
+#if defined(__linux__)
+   // Because of the way Fontconfig is built with Conan, FONTCONFIG_PATH must be
+   // defined on Linux to ensure fonts can be found
+   static const std::string kFontconfigPathKey {"FONTCONFIG_PATH"};
+
+   std::string fontconfigPath = scwx::util::GetEnvironment(kFontconfigPathKey);
+   if (fontconfigPath.empty())
+   {
+      scwx::util::SetEnvironment(kFontconfigPathKey, "/etc/fonts");
+   }
+#endif
+}
+
 void FontManager::Impl::InitializeFontCache()
 {
    std::string cachePath {