[spice-gtk 3/4] gtk-deprecated: silence warn on gtk_widget_set_double_buffered()

[Victor Toso <victortoso@xxxxxxxxxx>]

From: Victor Toso <me@xxxxxxxxxxxxxx>

To quote documentation:
 | gtk_widget_set_double_buffered has been deprecated since version
 | 3.14 and should not be used in newly-written code.
 | This function does not work under non-X11 backends or with
 | non-native windows. It should not be used in newly written code.

So be sure to only call this function on X11 backend and silence
warnings with G_GNUC_BEGIN/END_IGNORE_DEPRECATIONS

Warnings fixed:
 | spice-widget.c: In function ‘spice_display_init’:
 | spice-widget.c:643:5: warning: ‘gtk_widget_set_double_buffered’ is
 | deprecated
 |
 |     gtk_widget_set_double_buffered(area, true);
 |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 |
 | spice-widget.c:661:5: warning: ‘gtk_widget_set_double_buffered’ is
 | deprecated
 |
 |     gtk_widget_set_double_buffered(area, true);
 |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 |
 | spice-widget.c: In function ‘set_egl_enabled’:
 | spice-widget.c:1290:9: warning: ‘gtk_widget_set_double_buffered’ is
 | deprecated
 |     gtk_widget_set_double_buffered(GTK_WIDGET(area), !enabled);
 |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Victor Toso <victortoso@xxxxxxxxxx>
---
 src/spice-widget.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/spice-widget.c b/src/spice-widget.c
index 6ad0865..dc8ee40 100644
--- a/src/spice-widget.c
+++ b/src/spice-widget.c
@@ -640,7 +640,13 @@ static void spice_display_init(SpiceDisplay *display)
                      "signal::realize", drawing_area_realize, display,
                      NULL);
     gtk_stack_add_named(d->stack, area, "draw-area");
-    gtk_widget_set_double_buffered(area, true);
+#ifdef GDK_WINDOWING_X11
+    if (GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
+        G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+        gtk_widget_set_double_buffered(area, true);
+        G_GNUC_END_IGNORE_DEPRECATIONS
+    }
+#endif
     gtk_stack_set_visible_child(d->stack, area);
 
 #if HAVE_EGL
@@ -658,7 +664,13 @@ G_GNUC_END_IGNORE_DEPRECATIONS
 #endif
     area = gtk_drawing_area_new();
     gtk_stack_add_named(d->stack, area, "gst-area");
-    gtk_widget_set_double_buffered(area, true);
+#ifdef GDK_WINDOWING_X11
+    if (GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
+        G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+        gtk_widget_set_double_buffered(area, true);
+        G_GNUC_END_IGNORE_DEPRECATIONS
+    }
+#endif
 
     gtk_widget_show_all(widget);
 
@@ -1281,7 +1293,9 @@ static void set_egl_enabled(SpiceDisplay *display, bool enabled)
          * only way I found to prevent glitches when the window is
          * resized. */
         GtkWidget *area = gtk_stack_get_child_by_name(d->stack, "draw-area");
+        G_GNUC_BEGIN_IGNORE_DEPRECATIONS
         gtk_widget_set_double_buffered(GTK_WIDGET(area), !enabled);
+        G_GNUC_END_IGNORE_DEPRECATIONS
     } else
 #endif
     {
-- 
2.17.1

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