From cdbfb35067968b6c6bdb5f0479665c4f12929978 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 14 Jan 2024 16:58:05 -0500
Subject: [PATCH] rendernode-tool: Make test fonts available

We are likely to use the tool with node files from out testsuite,
which may now refer to custom test fonts, so make them available
in the same way as in the node editor.

If in doubt, you can set GTK_SOURCE_DIR to make the tool find the
fonts.
---
 tools/gtk-rendernode-tool.c | 41 +++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/tools/gtk-rendernode-tool.c b/tools/gtk-rendernode-tool.c
index 26c9d11656..6fe3717ee7 100644
--- a/tools/gtk-rendernode-tool.c
+++ b/tools/gtk-rendernode-tool.c
@@ -29,6 +29,10 @@
 #include <gtk/gtk.h>
 #include "gtk-rendernode-tool.h"
 
+#ifdef HAVE_PANGOFT
+#include <pango/pangofc-fontmap.h>
+#endif
+
 static void G_GNUC_NORETURN
 usage (void)
 {
@@ -88,6 +92,41 @@ log_writer_func (GLogLevelFlags   level,
   return G_LOG_WRITER_HANDLED;
 }
 
+static void
+maybe_add_test_fonts (void)
+{
+#ifdef HAVE_PANGOFT
+  const char *subdir = "testsuite/gsk/fonts";
+  const char *source_dir;
+  char *dir;
+
+  source_dir = g_getenv ("GTK_SOURCE_DIR");
+
+  if (source_dir)
+    {
+      char *abs_source_dir = g_canonicalize_filename (source_dir, NULL);
+      dir = g_canonicalize_filename (subdir, abs_source_dir);
+      g_free (abs_source_dir);
+    }
+  else
+    {
+      char *current_dir = g_get_current_dir ();
+      dir = g_canonicalize_filename (subdir, current_dir);
+      g_free (current_dir);
+    }
+
+  if (g_file_test (dir, G_FILE_TEST_EXISTS))
+    {
+      FcConfig *config;
+
+      config = FcConfigGetCurrent ();
+      FcConfigAppFontAddDir (config, (const FcChar8 *) dir);
+    }
+
+  g_free (dir);
+#endif
+}
+
 int
 main (int argc, const char *argv[])
 {
@@ -108,6 +147,8 @@ main (int argc, const char *argv[])
   argv++;
   argc--;
 
+  maybe_add_test_fonts ();
+
   if (strcmp (argv[0], "show") == 0)
     do_show (&argc, &argv);
   else if (strcmp (argv[0], "render") == 0)