Merge branch 'pixbuf-loader-check' into 'master'

Make testsuite fail if we lack pixbuf loaders

See merge request GNOME/gtk!3348

meson.build

@@ -384,7 +384,7 @@ pangocairo_dep = dependency('pangocairo', version: pango_req,
                             fallback : ['pango', 'libpangocairo_dep'])
 pixbuf_dep     = dependency('gdk-pixbuf-2.0', version: gdk_pixbuf_req,
                             fallback : ['gdk-pixbuf', 'gdkpixbuf_dep'],
-                            default_options: ['man=false'])
+                            default_options: ['png=true', 'jpeg=true', 'builtin_loaders=png,jpeg', 'man=false'])
 epoxy_dep      = dependency('epoxy', version: epoxy_req,
                             fallback: ['libepoxy', 'libepoxy_dep'])
 harfbuzz_dep   = dependency('harfbuzz', version: '>= 0.9', required: false,

testsuite/gdk/meson.build

@@ -11,6 +11,7 @@ tests = [
   'encoding',
   'keysyms',
   'memorytexture',
+  'pixbuf',
   'rectangle',
   'rgba',
   'seat',

testsuite/gdk/pixbuf.c

@@ -0,0 +1,31 @@
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+int
+main (int argc, char *argv[])
+{
+  GSList *formats;
+  gboolean have_png, have_jpeg;
+
+  have_png = FALSE;
+  have_jpeg = FALSE;
+
+  formats = gdk_pixbuf_get_formats ();
+
+  for (GSList *l = formats; l; l = l->next)
+    {
+      GdkPixbufFormat *format = l->data;
+      const char *name;
+
+      name = gdk_pixbuf_format_get_name (format);
+
+      if (strcmp (name, "png") == 0)
+        have_png = TRUE;
+      else if (strcmp (name, "jpeg") == 0)
+        have_jpeg = TRUE;
+    }
+
+  if (!have_png || !have_jpeg)
+    return 1;
+
+  return 0;
+}