From be3007e0c05b9084344497d5279b611a8ee59c84 Mon Sep 17 00:00:00 2001
From: Manuel Reimer <manuel.reimer@gmx.de>
Date: Fri, 14 Aug 2020 18:41:32 +0200
Subject: Fall back to system font directories if font file is missing

---
 glcdskin/font.c | 44 ++++++++++++++++++++++++++++++++++----------
 1 file changed, 34 insertions(+), 10 deletions(-)

(limited to 'glcdskin/font.c')

diff --git a/glcdskin/font.c b/glcdskin/font.c
index a8c22c8..bffdfe6 100644
--- a/glcdskin/font.c
+++ b/glcdskin/font.c
@@ -33,6 +33,12 @@ cSkinFont::~cSkinFont(void) {
 #endif
 }
 
+bool cSkinFont::FileExists(const std::string& path)
+{
+    std::ifstream f(path.c_str());
+    return (f.is_open());
+}
+
 bool cSkinFont::ParseUrl(const std::string & url)
 {
     bool isFontconfig = false;
@@ -143,16 +149,7 @@ bool cSkinFont::ParseUrl(const std::string & url)
         }
         mFile += "fonts/";
         mFile += rawfont;
-#if (__GNUC__ < 3)
-        std::ifstream f(mFile.c_str(), std::ios::in | std::ios::binary);
-#else
-        std::ifstream f(mFile.c_str(), std::ios_base::in | std::ios_base::binary);
-#endif
-        if (f.is_open())
-        {
-            f.close();
-        }
-        else
+        if (!FileExists(mFile))
         {
             // then try generic font dir
             mFile = mSkin->Config().FontPath();
@@ -162,6 +159,33 @@ bool cSkinFont::ParseUrl(const std::string & url)
                     mFile += '/';
             }
             mFile += rawfont;
+
+#ifdef HAVE_FONTCONFIG
+            // If we have fontconfig, then at last search for the font file in
+            // all system default font directories
+            if (!FileExists(mFile))
+            {
+                if (cSkinFont::FcInitCount <= 0)
+                {
+                    FcInit();
+                }
+                cSkinFont::FcInitCount++;
+
+                FcStrList* dirlist = FcConfigGetFontDirs(NULL);
+                FcChar8* dir;
+                while ((dir = FcStrListNext(dirlist)))
+                {
+                    mFile.assign((const char*)dir);
+                    mFile += '/';
+                    mFile += rawfont;
+                    if (FileExists(mFile))
+                    {
+                        break;
+                    }
+                }
+                FcStrListDone(dirlist);
+            }
+#endif
         }
     }
 
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