constraint layout: Add debug output for guides

Print out the allocation we end up giving to
guides. This helps in making sense of the
allocations of the child widgets that these
guides relate to.

diff --git a/gtk/gtkconstraintlayout.c b/gtk/gtkconstraintlayout.c
index 378e7840af8f44ebd751957f61639ad494ca98b6..23bf8631c61883cfcb73e17671703858e9c63471 100644 (file)
--- a/gtk/gtkconstraintlayout.c
+++ b/gtk/gtkconstraintlayout.c
@@ -974,6 +974,30 @@ gtk_constraint_solver_add_constraint (solver,
                                 child_baseline);
     }
 
+#ifdef G_ENABLE_DEBUG
+  if (GTK_DEBUG_CHECK (LAYOUT))
+    {
+      GHashTableIter iter;
+      gpointer key;
+      g_hash_table_iter_init (&iter, self->guides);
+      while (g_hash_table_iter_next (&iter, &key, NULL))
+        {
+          GtkConstraintGuide *guide = key;
+          GtkConstraintVariable *var_top, *var_left, *var_width, *var_height;
+          var_top = gtk_constraint_guide_get_attribute (guide, GTK_CONSTRAINT_ATTRIBUTE_TOP);
+          var_left = gtk_constraint_guide_get_attribute (guide, GTK_CONSTRAINT_ATTRIBUTE_LEFT);
+          var_width = gtk_constraint_guide_get_attribute (guide, GTK_CONSTRAINT_ATTRIBUTE_WIDTH);
+          var_height = gtk_constraint_guide_get_attribute (guide, GTK_CONSTRAINT_ATTRIBUTE_HEIGHT);
+          g_print ("Allocating guide '%s'[%p] with { .x: %g .y: %g .w: %g .h: %g }\n",
+                   gtk_constraint_guide_get_name (guide), guide,
+                   gtk_constraint_variable_get_value (var_left),
+                   gtk_constraint_variable_get_value (var_top),
+                   gtk_constraint_variable_get_value (var_width),
+                   gtk_constraint_variable_get_value (var_height));
+        }
+    }
+#endif
+
   /* The constraints on the children sizes can be removed now */
   for (guint i = 0; i < size_constraints->len; i++)
     {