Gtk3 thumbview: Replace deprecated GtkRCStyle usage with a GtkCssProvider

Makes EomThumbNav's scrollbar style similar to gtk2 version

inspired from:
https://git.gnome.org/browse/eog/commit/?id=4c93c41

1 files changed, 28 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 99d801a..99d01d2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -50,6 +50,10 @@
 #include <exempi/xmp.h>
 #endif
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+#define EOM_CSS_FILE_PATH EOM_DATA_DIR G_DIR_SEPARATOR_S "eom.css"
+#endif
+
 static EomStartupFlags flags;
 
 static gboolean fullscreen = FALSE;
@@ -187,12 +191,17 @@ main (int argc, char **argv)
 {
 	GError *error = NULL;
 	GOptionContext *ctx;
+#if GTK_CHECK_VERSION (3, 0, 0)
+	GtkCssProvider *provider;
+#endif
 
 	bindtextdomain (GETTEXT_PACKAGE, EOM_LOCALE_DIR);
 	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
 	textdomain (GETTEXT_PACKAGE);
 
+#if !GTK_CHECK_VERSION (3, 0, 0)
 	gtk_rc_parse (EOM_DATA_DIR G_DIR_SEPARATOR_S "gtkrc");
+#endif
 
 	ctx = g_option_context_new (NULL);
 	g_option_context_add_main_entries (ctx, goption_options, PACKAGE);
@@ -238,6 +247,25 @@ main (int argc, char **argv)
 	eom_job_queue_init ();
 	gdk_threads_init ();
 	eom_thumbnail_init ();
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+	/* Load special style properties for EomThumbView's scrollbar */
+	provider = gtk_css_provider_new ();
+	if (G_UNLIKELY (!gtk_css_provider_load_from_path(provider,
+							 EOM_CSS_FILE_PATH,
+							 &error)))
+	{
+		g_critical ("Could not load CSS data: %s", error->message);
+		g_clear_error (&error);
+	} else {
+		gtk_style_context_add_provider_for_screen (
+				gdk_screen_get_default(),
+				GTK_STYLE_PROVIDER (provider),
+				GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+	}
+	g_object_unref (provider);
+#endif
+
 	eom_plugin_engine_init ();
 
 	/* Add application specific icons to search path */