C++ (Cpp) gtk_css_node_invalidate_style_provider示例

示例#1

文件： gtkcsspathnode.c 项目： Distrotech/gtk

void
gtk_css_path_node_unset_context (GtkCssPathNode *node)
{
  gtk_internal_return_if_fail (GTK_IS_CSS_PATH_NODE (node));
  gtk_internal_return_if_fail (node->context != NULL);

  node->context = NULL;

  gtk_css_node_invalidate_style_provider (GTK_CSS_NODE (node));
}

示例#2

文件： gtkcssnode.c 项目： GYGit/gtk

void
gtk_css_node_invalidate_style_provider (GtkCssNode *cssnode)
{
  GtkCssNode *child;

  gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_SOURCE);

  for (child = cssnode->first_child;
       child;
       child = child->next_sibling)
    {
      if (gtk_css_node_get_style_provider_or_null (child) == NULL)
        gtk_css_node_invalidate_style_provider (child);
    }
}

示例#3

文件： gtkcssnode.c 项目： GYGit/gtk

static void
gtk_css_node_reposition (GtkCssNode *node,
                         GtkCssNode *new_parent,
                         GtkCssNode *previous)
{
  GtkCssNode *old_parent;

  g_assert (! (new_parent == NULL && previous != NULL));

  old_parent = node->parent;
  /* Take a reference here so the whole function has a reference */
  g_object_ref (node);

  if (node->visible)
    {
      if (node->next_sibling)
        gtk_css_node_invalidate (node->next_sibling,
                                 GTK_CSS_CHANGE_ANY_SIBLING
                                 | GTK_CSS_CHANGE_NTH_CHILD
                                 | (node->previous_sibling ? 0 : GTK_CSS_CHANGE_FIRST_CHILD));
      else if (node->previous_sibling)
        gtk_css_node_invalidate (node->previous_sibling, GTK_CSS_CHANGE_LAST_CHILD);
    }

  if (old_parent != NULL)
    {
      g_signal_emit (old_parent, cssnode_signals[NODE_REMOVED], 0, node, node->previous_sibling);
      if (old_parent->first_child && node->visible)
        gtk_css_node_invalidate (old_parent->first_child, GTK_CSS_CHANGE_NTH_LAST_CHILD);
    }

  if (old_parent != new_parent)
    {
      if (old_parent == NULL)
        {
          gtk_css_node_parent_will_be_set (node);
        }
      else
        {
          g_object_unref (node);
        }

      if (gtk_css_node_get_style_provider_or_null (node) == NULL)
        gtk_css_node_invalidate_style_provider (node);
      gtk_css_node_invalidate (node, GTK_CSS_CHANGE_TIMESTAMP | GTK_CSS_CHANGE_ANIMATIONS);

      if (new_parent)
        {
          g_object_ref (node);

          if (node->pending_changes)
            new_parent->needs_propagation = TRUE;
          if (node->invalid && node->visible)
            gtk_css_node_set_invalid (new_parent, TRUE);
        }
      else
        {
          gtk_css_node_parent_was_unset (node);
        }
    }

  if (new_parent)
    {
      g_signal_emit (new_parent, cssnode_signals[NODE_ADDED], 0, node, previous);
      if (node->visible)
        gtk_css_node_invalidate (new_parent->first_child, GTK_CSS_CHANGE_NTH_LAST_CHILD);
    }

  if (node->visible)
    {
      if (node->next_sibling)
        {
          if (node->previous_sibling == NULL)
            gtk_css_node_invalidate (node->next_sibling, GTK_CSS_CHANGE_FIRST_CHILD);
          else
            gtk_css_node_invalidate_style (node->next_sibling);
        }
      else if (node->previous_sibling)
        {
          gtk_css_node_invalidate (node->previous_sibling, GTK_CSS_CHANGE_LAST_CHILD);
        }
    }
  else
    {
      if (node->next_sibling)
        gtk_css_node_invalidate_style (node->next_sibling);
    }

  gtk_css_node_invalidate (node, GTK_CSS_CHANGE_ANY_PARENT
                                 | GTK_CSS_CHANGE_ANY_SIBLING
                                 | GTK_CSS_CHANGE_NTH_CHILD
                                 | (node->previous_sibling ? 0 : GTK_CSS_CHANGE_FIRST_CHILD)
                                 | (node->next_sibling ? 0 : GTK_CSS_CHANGE_LAST_CHILD));

  g_object_unref (node);
}