[cogl/cogl-latest-win: 7/27] cogl-crate.c: Add fallback for data search on Windows

[Chun-wei Fan <fanchunwei src gnome org>]

commit 531a89aafd2a10fc88c9e3e7af0d9eb42a0d349c
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Mon Oct 18 18:19:35 2021 +0800

    cogl-crate.c: Add fallback for data search on Windows
    
    Things on Windows tend to be relocatable, so if cogl-crate failed to
    find crate.jpg with the hard-coded path on Windows, try again using a
    dynamically-constructed path.

 examples/cogl-crate.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)
---
diff --git a/examples/cogl-crate.c b/examples/cogl-crate.c
index 7b5256f0..0c70cd3d 100644
--- a/examples/cogl-crate.c
+++ b/examples/cogl-crate.c
@@ -152,6 +152,8 @@ main (int argc, char **argv)
   PangoRectangle hello_label_size;
   float fovy, aspect, z_near, z_2d, z_far;
   CoglDepthState depth_state;
+  const char *data_filename = "crate.jpg";
+  char *datapath;
 
   ctx = cogl_context_new (NULL, &error);
   if (!ctx) {
@@ -219,11 +221,35 @@ main (int argc, char **argv)
                               6 * 6);
 
   /* Load a jpeg crate texture from a file */
-  printf ("crate.jpg (CC by-nc-nd http://bit.ly/9kP45T) ShadowRunner27 http://bit.ly/m1YXLh\n";);
+  printf ("%s (CC by-nc-nd http://bit.ly/9kP45T) ShadowRunner27 http://bit.ly/m1YXLh\n";, data_filename);
+
+  datapath = g_build_filename (COGL_EXAMPLES_DATA, data_filename, NULL);
+
   data.texture =
     cogl_texture_2d_new_from_file (ctx,
-                                   COGL_EXAMPLES_DATA "crate.jpg",
+                                   datapath,
                                    &error);
+
+  g_free (datapath);
+
+#ifdef G_OS_WIN32
+  /* Windows: try again from the dynamically-constructed path if needed */
+  if (!data.texture)
+    {
+      char *prefix = g_win32_get_package_installation_directory_of_module (NULL);
+      datapath = g_build_filename (prefix, "share", "cogl", "examples-data", data_filename, NULL);
+
+      g_clear_error (&error);
+
+      data.texture =
+        cogl_texture_2d_new_from_file (ctx,
+                                       datapath,
+                                       &error);
+      g_free (datapath);
+      g_free (prefix);
+    }
+#endif
+
   if (!data.texture)
     g_error ("Failed to load texture: %s", error->message);