conform: Use a repaint function

Timeouts and idles are subject to the whims of the load of the machine
running the tests, as we found out with the new installed tests and
OSTree-based VM running the conformance test suite continuously.

We should be able to use a repaint function and a blocking loop that
either is terminated because we hit g_assert(), or because a flag gets
toggled once we know that the Stage has been at least painted once.

The currently enabled tests using clutter_stage_read_pixels() have been
updated to this approach.

https://bugzilla.gnome.org/show_bug.cgi?id=703476

tests/conform/actor-layout.c

@@ -16,7 +16,6 @@ struct _TestState
   gint in_validation;
 
   guint is_running : 1;
-  guint success    : 1;
 };
 
 static TestState *
@@ -169,38 +168,28 @@ validate_state (ClutterActor *stage,
 
       clutter_actor_get_allocation_box (actor, &box);
 
-      g_assert (check_color_at (stage, actor, color, box.x1 + 2, box.y1 + 2));
-      g_assert (check_color_at (stage, actor, color, box.x2 - 2, box.y2 - 2));
+      check_color_at (stage, actor, color, box.x1 + 2, box.y1 + 2);
+      check_color_at (stage, actor, color, box.x2 - 2, box.y2 - 2);
     }
 
   test_state_pop_validation (state);
 
-  state->success = TRUE;
-
-  clutter_main_quit ();
-}
-
-static gboolean
-queue_redraw (gpointer data_)
-{
-  TestState *state = data_;
-
-  clutter_actor_queue_redraw (state->stage);
-
-  return TRUE;
+  state->is_running = FALSE;
 }
 
 static gboolean
 test_state_run (TestState *state)
 {
-  state->is_running = TRUE;
-
   g_signal_connect_after (state->stage, "paint", G_CALLBACK (validate_state), state);
-  state->id = clutter_threads_add_idle (queue_redraw, state);
 
-  clutter_main ();
+  while (state->is_running)
+    {
+      clutter_actor_queue_redraw (state->stage);
 
-  return state->success;
+      g_main_context_iteration (NULL, FALSE);
+    }
+
+  return TRUE;
 }
 
 void

tests/conform/actor-offscreen-redirect.c

@@ -26,6 +26,7 @@ typedef struct
   ClutterActor *container;
   ClutterActor *child;
   ClutterActor *unrelated_actor;
+  gboolean was_painted;
 } Data;
 
 GType foo_actor_get_type (void) G_GNUC_CONST;
@@ -89,15 +90,15 @@ typedef struct _FooGroupClass FooGroupClass;
 
 struct _FooGroupClass
 {
-  ClutterGroupClass parent_class;
+  ClutterActorClass parent_class;
 };
 
 struct _FooGroup
 {
-  ClutterGroup parent;
+  ClutterActor parent;
 };
 
-G_DEFINE_TYPE (FooGroup, foo_group, CLUTTER_TYPE_GROUP);
+G_DEFINE_TYPE (FooGroup, foo_group, CLUTTER_TYPE_ACTOR)
 
 static gboolean
 foo_group_has_overlaps (ClutterActor *actor)
@@ -175,7 +176,7 @@ verify_redraw (Data *data, int expected_paint_count)
 }
 
 static gboolean
-timeout_cb (gpointer user_data)
+run_verify (gpointer user_data)
 {
   Data *data = user_data;
 
@@ -288,7 +289,7 @@ timeout_cb (gpointer user_data)
   clutter_actor_set_position (data->unrelated_actor, 0, 1);
   verify_redraw (data, 0);
 
-  clutter_main_quit ();
+  data->was_painted = TRUE;
 
   return G_SOURCE_REMOVE;
 }
@@ -297,52 +298,43 @@ void
 actor_offscreen_redirect (TestConformSimpleFixture *fixture,
                           gconstpointer test_data)
 {
-  if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
-    {
   Data data;
 
+  if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
+    {
+      if (g_test_verbose ())
+        g_print ("Offscreen buffers are not available, skipping test.\n");
+
+      return;
+    }
+
   data.stage = clutter_stage_new ();
-
-      data.parent_container = clutter_group_new ();
-
+  data.parent_container = clutter_actor_new ();
   data.container = g_object_new (foo_group_get_type (), NULL);
-
   data.foo_actor = g_object_new (foo_actor_get_type (), NULL);
   clutter_actor_set_size (CLUTTER_ACTOR (data.foo_actor), 100, 100);
 
-      clutter_container_add_actor (CLUTTER_CONTAINER (data.container),
-                                   CLUTTER_ACTOR (data.foo_actor));
+  clutter_actor_add_child (data.container, CLUTTER_ACTOR (data.foo_actor));
+  clutter_actor_add_child (data.parent_container, data.container);
+  clutter_actor_add_child (data.stage, data.parent_container);
 
-      clutter_container_add_actor (CLUTTER_CONTAINER (data.parent_container),
-                                   data.container);
-
-      clutter_container_add_actor (CLUTTER_CONTAINER (data.stage),
-                                   data.parent_container);
-
-      data.child = clutter_rectangle_new ();
+  data.child = clutter_actor_new ();
   clutter_actor_set_size (data.child, 1, 1);
-      clutter_container_add_actor (CLUTTER_CONTAINER (data.container),
-                                   data.child);
+  clutter_actor_add_child (data.container, data.child);
 
-      data.unrelated_actor = clutter_rectangle_new ();
+  data.unrelated_actor = clutter_actor_new ();
   clutter_actor_set_size (data.child, 1, 1);
-      clutter_container_add_actor (CLUTTER_CONTAINER (data.stage),
-                                   data.unrelated_actor);
+  clutter_actor_add_child (data.stage, data.unrelated_actor);
 
   clutter_actor_show (data.stage);
 
-      /* Start the test after a short delay to allow the stage to
-         render its initial frames without affecting the results */
-      g_timeout_add_full (G_PRIORITY_LOW, 250, timeout_cb, &data, NULL);
+  clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT,
+                                         run_verify,
+                                         &data,
+                                         NULL);
 
-      clutter_main ();
+  while (!data.was_painted)
+    g_main_context_iteration (NULL, FALSE);
 
   clutter_actor_destroy (data.stage);
-
-      if (g_test_verbose ())
-        g_print ("OK\n");
-    }
-  else if (g_test_verbose ())
-    g_print ("Skipping\n");
 }
-

tests/conform/texture-fbo.c

@@ -24,6 +24,7 @@ typedef struct _TestState
 {
   ClutterActor *stage;
   guint frame;
+  gboolean was_painted;
 } TestState;
 
 static ClutterActor *
@@ -137,16 +138,12 @@ validate_result (TestState *state)
     g_print ("Testing onscreen clone with path clip...\n");
   validate_part (state, SOURCE_SIZE, ypos * SOURCE_SIZE, 1);
   ypos++;
-
-  /* Comment this out if you want visual feedback of what this test
-   * paints.
-   */
-  clutter_main_quit ();
 }
 
-static void
-on_paint (ClutterActor *actor, TestState *state)
+static gboolean
+on_paint (gpointer data)
 {
+  TestState *state = data;
   int frame_num;
 
   /* XXX: validate_result calls clutter_stage_read_pixels which will result in
@@ -155,14 +152,10 @@ on_paint (ClutterActor *actor, TestState *state)
   frame_num = state->frame++;
   if (frame_num == 1)
     validate_result (state);
-}
 
-static gboolean
-queue_redraw (gpointer stage)
-{
-  clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
+  state->was_painted = TRUE;
 
-  return G_SOURCE_CONTINUE;
+  return G_SOURCE_REMOVE;
 }
 
 void
@@ -174,7 +167,12 @@ texture_fbo (TestConformSimpleFixture *fixture,
   int ypos = 0;
 
   if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
+    {
+      if (g_test_verbose ())
+        g_print ("Offscreen buffers are not available, skipping.\n");
+
       return;
+    }
 
   state.frame = 0;
 
@@ -224,18 +222,15 @@ texture_fbo (TestConformSimpleFixture *fixture,
   clutter_container_add (CLUTTER_CONTAINER (state.stage), actor, NULL);
   ypos++;
 
-  /* We force continuous redrawing of the stage, since we need to skip
-   * the first few frames, and we wont be doing anything else that
-   * will trigger redrawing. */
-  clutter_threads_add_idle (queue_redraw, state.stage);
-  g_signal_connect_after (state.stage, "paint", G_CALLBACK (on_paint), &state);
+  clutter_actor_show (state.stage);
 
-  clutter_actor_show_all (state.stage);
+  clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT,
+                                         on_paint,
+                                         &state,
+                                         NULL);
 
-  clutter_main ();
+  while (!state.was_painted)
+    g_main_context_iteration (NULL, FALSE);
 
   clutter_actor_destroy (state.stage);
-
-  if (g_test_verbose ())
-    g_print ("OK\n");
 }