gtkpacker.c

gtk是linux一款强大的夸平台的图形化开发工具

	  arg->type = GTK_TYPE_INVALID;
	  return;
	}
    }

  switch (arg_id)
    {
    case CHILD_ARG_SIDE:
      GTK_VALUE_ENUM (*arg) = child_info->side;
      break;
    case CHILD_ARG_ANCHOR:
      GTK_VALUE_ENUM (*arg) = child_info->anchor;
      break;
    case CHILD_ARG_EXPAND:
      GTK_VALUE_BOOL (*arg) = (child_info->options & GTK_PACK_EXPAND) != 0;
      break;
    case CHILD_ARG_FILL_X:
      GTK_VALUE_BOOL (*arg) = (child_info->options & GTK_FILL_X) != 0;
      break;
    case CHILD_ARG_FILL_Y:
      GTK_VALUE_BOOL (*arg) = (child_info->options & GTK_FILL_Y) != 0;
      break;
    case CHILD_ARG_USE_DEFAULT:
      GTK_VALUE_BOOL (*arg) = child_info->use_default;
      break;
    case CHILD_ARG_BORDER_WIDTH:
      GTK_VALUE_UINT (*arg) = child_info->border_width;
      break;
    case CHILD_ARG_PAD_X:
      GTK_VALUE_UINT (*arg) = child_info->pad_x;
      break;
    case CHILD_ARG_PAD_Y:
      GTK_VALUE_UINT (*arg) = child_info->pad_y;
      break;
    case CHILD_ARG_I_PAD_X:
      GTK_VALUE_UINT (*arg) = child_info->i_pad_x;
      break;
    case CHILD_ARG_I_PAD_Y:
      GTK_VALUE_UINT (*arg) = child_info->i_pad_y;
      break;
    case CHILD_ARG_POSITION:
      GTK_VALUE_LONG (*arg) = 0;
      for (list = packer->children; list; list = list->next)
	{
	  child_info = list->data;
	  if (child_info->widget == child)
	    break;
	  GTK_VALUE_LONG (*arg)++;
	}
      if (!list)
	GTK_VALUE_LONG (*arg) = -1;
      break;
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
    }
}

static void
gtk_packer_init (GtkPacker *packer)
{
  GTK_WIDGET_SET_FLAGS (packer, GTK_NO_WINDOW);
  
  packer->children = NULL;
  packer->spacing = 0;
}

void
gtk_packer_set_spacing (GtkPacker *packer,
			guint      spacing)
{
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  
  if (spacing != packer->spacing) 
    {
      packer->spacing = spacing;
      gtk_widget_queue_resize (GTK_WIDGET (packer));
    }
}

GtkWidget*
gtk_packer_new (void)
{
  return GTK_WIDGET (gtk_type_new (GTK_TYPE_PACKER));
}

static void
redo_defaults_children (GtkPacker *packer)
{
  GList *list;
  GtkPackerChild *child;
  
  list = g_list_first(packer->children);
  while (list != NULL) 
    {
      child = list->data;
      
      if (child->use_default) 
	{
	  child->border_width = packer->default_border_width;
	  child->pad_x = packer->default_pad_x;
	  child->pad_y = packer->default_pad_y;
	  child->i_pad_x = packer->default_i_pad_x;
	  child->i_pad_y = packer->default_i_pad_y;
	  gtk_widget_queue_resize (GTK_WIDGET (child->widget));
	}
      list = g_list_next(list);
    }
}

void
gtk_packer_set_default_border_width (GtkPacker *packer,
				     guint      border)
{
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  
  if (packer->default_border_width != border) 
    {
      packer->default_border_width = border;;
      redo_defaults_children (packer);
    }
}
void
gtk_packer_set_default_pad (GtkPacker *packer,
			    guint      pad_x,
			    guint      pad_y)
{
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  
  if (packer->default_pad_x != pad_x ||
      packer->default_pad_y != pad_y) 
    {
      packer->default_pad_x = pad_x;
      packer->default_pad_y = pad_y;
      redo_defaults_children (packer);
    }
}

void
gtk_packer_set_default_ipad (GtkPacker *packer,
			     guint      i_pad_x,
			     guint      i_pad_y)
{
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  
  if (packer->default_i_pad_x != i_pad_x ||
      packer->default_i_pad_y != i_pad_y) {
    
    packer->default_i_pad_x = i_pad_x;
    packer->default_i_pad_y = i_pad_y;
    redo_defaults_children (packer);
  }
}

static void 
gtk_packer_container_add (GtkContainer *packer, GtkWidget *child)
{
  gtk_packer_add_defaults(GTK_PACKER(packer), child,
			  GTK_SIDE_TOP, GTK_ANCHOR_CENTER, 0);
}

void 
gtk_packer_add_defaults (GtkPacker       *packer,
			 GtkWidget       *child,
                         GtkSideType      side,
                         GtkAnchorType    anchor,
                         GtkPackerOptions options)
{
  GtkPackerChild *pchild;
  
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  g_return_if_fail (child != NULL);
  g_return_if_fail (GTK_IS_WIDGET (child));
  
  pchild = (GtkPackerChild*) g_malloc(sizeof(GtkPackerChild));
  
  pchild->widget = child;
  pchild->side = side;
  pchild->options = options;
  pchild->anchor = anchor;
  
  pchild->use_default = 1;
  
  pchild->border_width = packer->default_border_width;
  pchild->pad_x = packer->default_pad_x;
  pchild->pad_y = packer->default_pad_y;
  pchild->i_pad_x = packer->default_i_pad_x;
  pchild->i_pad_y = packer->default_i_pad_y;
  
  packer->children = g_list_append(packer->children, (gpointer) pchild);
  
  gtk_widget_set_parent (child, GTK_WIDGET (packer));
  
  if (GTK_WIDGET_REALIZED (child->parent))
    gtk_widget_realize (child);

  if (GTK_WIDGET_VISIBLE (child->parent) && GTK_WIDGET_VISIBLE (child))
    {
      if (GTK_WIDGET_MAPPED (child->parent))
	gtk_widget_map (child);

      gtk_widget_queue_resize (child);
    }
}

void 
gtk_packer_add (GtkPacker       *packer,
                GtkWidget       *child,
                GtkSideType      side,
                GtkAnchorType    anchor,
                GtkPackerOptions options,
                guint            border_width,
                guint            pad_x,
                guint            pad_y,
                guint            i_pad_x,
                guint            i_pad_y)
{
  GtkPackerChild *pchild;
  
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  g_return_if_fail (child != NULL);
  g_return_if_fail (GTK_IS_WIDGET (child));
  
  pchild = (GtkPackerChild*) g_malloc(sizeof(GtkPackerChild));
  
  pchild->widget = child;
  pchild->side = side;
  pchild->options = options;
  pchild->anchor = anchor;
  
  pchild->use_default = 0;
  
  pchild->border_width = border_width;
  pchild->pad_x = pad_x;
  pchild->pad_y = pad_y;
  pchild->i_pad_x = i_pad_x;
  pchild->i_pad_y = i_pad_y;
  
  packer->children = g_list_append(packer->children, (gpointer) pchild);
  
  gtk_widget_set_parent (child, GTK_WIDGET (packer));
  
  if (GTK_WIDGET_REALIZED (child->parent))
    gtk_widget_realize (child);

  if (GTK_WIDGET_VISIBLE (child->parent) && GTK_WIDGET_VISIBLE (child))
    {
      if (GTK_WIDGET_MAPPED (child->parent))
	gtk_widget_map (child);

      gtk_widget_queue_resize (child);
    }
}

void
gtk_packer_set_child_packing (GtkPacker       *packer,
			      GtkWidget       *child,
			      GtkSideType      side,
			      GtkAnchorType    anchor,
			      GtkPackerOptions options,
			      guint            border_width,
			      guint            pad_x,
			      guint            pad_y,
			      guint            i_pad_x,
			      guint            i_pad_y)
{
  GList *list;
  GtkPackerChild *pchild;
  
  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  g_return_if_fail (child != NULL);
  
  list = g_list_first(packer->children);
  while (list != NULL) 
    {
      pchild = (GtkPackerChild*) list->data;
      if (pchild->widget == child) 
	{
	  pchild->side = side;
	  pchild->anchor = anchor;
	  pchild->options = options;
	  
	  pchild->use_default = 0;
	  
	  pchild->border_width = border_width;
	  pchild->pad_x = pad_x;
	  pchild->pad_y = pad_y;
	  pchild->i_pad_x = i_pad_x;
	  pchild->i_pad_y = i_pad_y;
	  
	  if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (packer))
	    gtk_widget_queue_resize (child);
	  return;
        }
      list = g_list_next(list);
    }

  g_warning ("couldn't find child `%s' amongst the packer's children", gtk_type_name (GTK_OBJECT_TYPE (child)));
}

void
gtk_packer_reorder_child (GtkPacker *packer,
			  GtkWidget *child,
			  gint       position)
{
  GList *list;

  g_return_if_fail (packer != NULL);
  g_return_if_fail (GTK_IS_PACKER (packer));
  g_return_if_fail (child != NULL);

  list = packer->children;
  while (list)
    {
      GtkPackerChild *child_info;

      child_info = list->data;
      if (child_info->widget == child)
	break;

      list = list->next;
    }

  if (list && packer->children->next)
    {
      GList *tmp_list;

      if (list->next)
	list->next->prev = list->prev;
      if (list->prev)
	list->prev->next = list->next;
      else
	packer->children = list->next;

      tmp_list = packer->children;
      while (position && tmp_list->next)
	{
	  position--;
	  tmp_list = tmp_list->next;
	}

      if (position)
	{
	  tmp_list->next = list;
	  list->prev = tmp_list;
	  list->next = NULL;
	}
      else
	{
	  if (tmp_list->prev)
	    tmp_list->prev->next = list;
	  else
	    packer->children = list;
	  list->prev = tmp_list->prev;
	  tmp_list->prev = list;
	  list->next = tmp_list;
	}

      if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (packer))
	gtk_widget_queue_resize (child);
    }
}

static void 
gtk_packer_remove (GtkContainer *container,
		   GtkWidget    *widget) 
{
  GtkPacker *packer;
  GtkPackerChild *child;
  GList *children;
  gint visible;
  
  g_return_if_fail (container != NULL);
  g_return_if_fail (widget != NULL);
  
  packer = GTK_PACKER (container);
  
  children = g_list_first(packer->children);
  while (children) 
    {
      child = children->data;
      
      if (child->widget == widget) 
	{
	  visible = GTK_WIDGET_VISIBLE (widget);
	  gtk_widget_unparent (widget);
	  
	  packer->children = g_list_remove_link (packer->children, children);
	  g_list_free (children);
	  g_free (child);
	  
	  if (visible && GTK_WIDGET_VISIBLE (container))
	    gtk_widget_queue_resize (GTK_WIDGET (container));
	  
	  break;
        }
      
      children = g_list_next(children);
    }
}

static void 
gtk_packer_map (GtkWidget *widget)
{
  GtkPacker *packer;
  GtkPackerChild *child;
  GList *children;
  
  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_PACKER (widget));
  
  packer = GTK_PACKER (widget);
  GTK_WIDGET_SET_FLAGS (packer, GTK_MAPPED);
  
  children = g_list_first(packer->children);
  while (children != NULL) 
    {
      child = children->data;
      children = g_list_next(children);
      
      if (GTK_WIDGET_VISIBLE (child->widget) &&
	  !GTK_WIDGET_MAPPED (child->widget))
	gtk_widget_map (child->widget);
    }
}

static void 
gtk_packer_unmap (GtkWidget *widget)
{
  GtkPacker *packer;
  GtkPackerChild *child;
  GList *children;