[gtk+] testoverlay: Add test for overlay z ordering

[Alexander Larsson <alexl src gnome org>]

commit 1a44a85847cc1889eff1c31aeb27837a53e2c71f
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Jun 9 10:23:19 2015 +0200

    testoverlay: Add test for overlay z ordering
    
    https://bugzilla.gnome.org/show_bug.cgi?id=750568
    
    https://bugs.freedesktop.org/show_bug.cgi?id=90917

 tests/testoverlay.c |   67 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 67 insertions(+), 0 deletions(-)
---
diff --git a/tests/testoverlay.c b/tests/testoverlay.c
index c2c2cad..38fd784 100644
--- a/tests/testoverlay.c
+++ b/tests/testoverlay.c
@@ -458,6 +458,69 @@ test_input_stacking (void)
   return win;
 }
 
+static void
+reorder_overlay (GtkButton *button, GtkOverlay *overlay)
+{
+  gtk_overlay_reorder_overlay (overlay, gtk_widget_get_parent (GTK_WIDGET (button)), -1);
+}
+
+static GtkWidget *
+test_child_order (void)
+{
+  GtkWidget *win;
+  GtkWidget *overlay;
+  GtkWidget *button;
+  GtkWidget *label;
+  GtkWidget *ebox;
+  GdkRGBA color;
+  int i;
+
+  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title (GTK_WINDOW (win), "Child Order");
+
+  overlay = gtk_overlay_new ();
+  gtk_container_add (GTK_CONTAINER (win), overlay);
+
+  for (i = 0; i < 4; i++)
+    {
+      char *colors[] = {
+       "rgba(255,0,0,0.8)", "rgba(0,255,0,0.8)", "rgba(0,0,255,0.8)", "rgba(255,0,255,0.8)"
+      };
+      ebox = gtk_event_box_new ();
+      button = gtk_button_new_with_label (g_strdup_printf ("Child %d", i));
+      g_signal_connect (button, "clicked", G_CALLBACK (reorder_overlay), overlay);
+      gtk_widget_set_margin_start (button, 20);
+      gtk_widget_set_margin_end (button, 20);
+      gtk_widget_set_margin_top (button, 10);
+      gtk_widget_set_margin_bottom (button, 10);
+
+      gtk_container_add (GTK_CONTAINER (ebox), button);
+
+      gdk_rgba_parse (&color, colors[i]);
+      G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+      gtk_widget_override_background_color (ebox, 0, &color);
+      G_GNUC_END_IGNORE_DEPRECATIONS
+       gtk_widget_set_halign (ebox, (i == 0 || i == 3) ? GTK_ALIGN_START : GTK_ALIGN_END);
+      gtk_widget_set_valign (ebox, i < 2 ? GTK_ALIGN_START : GTK_ALIGN_END);
+      gtk_overlay_add_overlay (GTK_OVERLAY (overlay), ebox);
+    }
+
+  ebox = gtk_event_box_new ();
+  gdk_rgba_parse (&color, "white");
+  G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+  gtk_widget_override_background_color (ebox, 0, &color);
+  G_GNUC_END_IGNORE_DEPRECATIONS
+
+  label = gtk_label_new ("Main\n"
+                        "Main\n"
+                        "Main\n"
+                        "Main\n");
+  gtk_container_add (GTK_CONTAINER (ebox), label);
+  gtk_container_add (GTK_CONTAINER (overlay), ebox);
+
+  return win;
+}
+
 
 int
 main (int argc, char *argv[])
@@ -470,6 +533,7 @@ main (int argc, char *argv[])
   GtkWidget *win6;
   GtkWidget *win7;
   GtkWidget *win8;
+  GtkWidget *win9;
 
   gtk_init (&argc, &argv);
 
@@ -500,6 +564,9 @@ main (int argc, char *argv[])
   win8 = test_input_stacking ();
   gtk_widget_show_all (win8);
 
+  win9 = test_child_order ();
+  gtk_widget_show_all (win9);
+
   gtk_main ();
 
   return 0;