gtknotebook.c

gtk是linux一款强大的夸平台的图形化开发工具

  GTK_NOTEBOOK (widget)->child_has_focus = FALSE;
  GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
  gtk_widget_draw_focus (widget);

  return FALSE;
}

static gint
gtk_notebook_focus_out (GtkWidget     *widget,
			GdkEventFocus *event)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_NOTEBOOK (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
  gtk_widget_draw_focus (widget);

  return FALSE;
}

static void
gtk_notebook_draw_focus (GtkWidget *widget)
{
  GtkNotebook *notebook;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (widget));

  notebook = GTK_NOTEBOOK (widget);

  if (GTK_WIDGET_DRAWABLE (widget) && notebook->show_tabs &&
      notebook->focus_tab)
    {
      GtkNotebookPage *page;
      GdkRectangle area;

      page = notebook->focus_tab->data;

      area.x = page->tab_label->allocation.x - 1;
      area.y = page->tab_label->allocation.y - 1;
      area.width = page->tab_label->allocation.width + 2;
      area.height = page->tab_label->allocation.height + 2;

      gtk_notebook_draw_tab (GTK_NOTEBOOK (widget), page, &area);
    }
}

static void
gtk_notebook_style_set (GtkWidget *widget,
			GtkStyle  *previous_style)
{
  if (GTK_WIDGET_REALIZED (widget) &&
      !GTK_WIDGET_NO_WINDOW (widget))
    {
      gtk_style_set_background (widget->style, widget->window, widget->state);
      if (GTK_WIDGET_DRAWABLE (widget))
	gdk_window_clear (widget->window);
    }

  gtk_notebook_set_shape (GTK_NOTEBOOK(widget));
}

/* Private GtkContainer Methods :
 * 
 * gtk_notebook_set_child_arg
 * gtk_notebook_get_child_arg
 * gtk_notebook_add
 * gtk_notebook_remove
 * gtk_notebook_focus
 * gtk_notebook_set_focus_child
 * gtk_notebook_child_type
 * gtk_notebook_forall
 */
static void
gtk_notebook_set_child_arg (GtkContainer     *container,
			    GtkWidget        *child,
			    GtkArg           *arg,
			    guint             arg_id)
{
  gboolean expand;
  gboolean fill;
  GtkPackType pack_type;

  switch (arg_id)
    {
    case CHILD_ARG_TAB_LABEL:
      /* a NULL pointer indicates a default_tab setting, otherwise
       * we need to set the associated label
       */
      gtk_notebook_set_tab_label_text (GTK_NOTEBOOK (container), child,
				       GTK_VALUE_STRING(*arg));
      break;
    case CHILD_ARG_MENU_LABEL:
      gtk_notebook_set_menu_label_text (GTK_NOTEBOOK (container), child,
					GTK_VALUE_STRING (*arg));
      break;
    case CHILD_ARG_POSITION:
      gtk_notebook_reorder_child (GTK_NOTEBOOK (container), child,
				  GTK_VALUE_INT (*arg));
      break;
    case CHILD_ARG_TAB_EXPAND:
      gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
					    &expand, &fill, &pack_type);
      gtk_notebook_set_tab_label_packing (GTK_NOTEBOOK (container), child,
					  GTK_VALUE_BOOL (*arg),
					  fill, pack_type);
      break;
    case CHILD_ARG_TAB_FILL:
      gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
					    &expand, &fill, &pack_type);
      gtk_notebook_set_tab_label_packing (GTK_NOTEBOOK (container), child,
					  expand,
					  GTK_VALUE_BOOL (*arg),
					  pack_type);
      break;
    case CHILD_ARG_TAB_PACK:
      gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
					    &expand, &fill, &pack_type);
      gtk_notebook_set_tab_label_packing (GTK_NOTEBOOK (container), child,
					  expand, fill,
					  GTK_VALUE_BOOL (*arg));
      break;
    default:
      break;
    }
}

static void
gtk_notebook_get_child_arg (GtkContainer     *container,
			    GtkWidget        *child,
			    GtkArg           *arg,
			    guint             arg_id)
{
  GList *list;
  GtkNotebook *notebook;
  GtkWidget *label;
  gboolean expand;
  gboolean fill;
  GtkPackType pack_type;

  notebook = GTK_NOTEBOOK (container);

  if (!(list = g_list_find_custom (notebook->children, child,
				   gtk_notebook_page_compare)))
    {
      arg->type = GTK_TYPE_INVALID;
      return;
    }

  switch (arg_id)
    {
    case CHILD_ARG_TAB_LABEL:
      label = gtk_notebook_get_tab_label (notebook, child);

      if (label && GTK_IS_LABEL (label))
	GTK_VALUE_STRING (*arg) = g_strdup (GTK_LABEL (label)->label);
      else
	GTK_VALUE_STRING (*arg) = NULL;
      break;
    case CHILD_ARG_MENU_LABEL:
      label = gtk_notebook_get_menu_label (notebook, child);

      if (label && GTK_IS_LABEL (label))
	GTK_VALUE_STRING (*arg) = g_strdup (GTK_LABEL (label)->label);
      else
	GTK_VALUE_STRING (*arg) = NULL;
      break;
    case CHILD_ARG_POSITION:
      GTK_VALUE_INT (*arg) = g_list_position (notebook->children, list);
      break;
    case CHILD_ARG_TAB_EXPAND:
	gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
					      &expand, NULL, NULL);
	GTK_VALUE_BOOL (*arg) = expand;
      break;
    case CHILD_ARG_TAB_FILL:
	gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
					      NULL, &fill, NULL);
	GTK_VALUE_BOOL (*arg) = fill;
      break;
    case CHILD_ARG_TAB_PACK:
	gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
					      NULL, NULL, &pack_type);
	GTK_VALUE_BOOL (*arg) = pack_type;
      break;
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
    }
}

static void
gtk_notebook_add (GtkContainer *container,
		  GtkWidget    *widget)
{
  g_return_if_fail (container != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (container));

  gtk_notebook_insert_page_menu (GTK_NOTEBOOK (container), widget, 
				 NULL, NULL, -1);
}

static void
gtk_notebook_remove (GtkContainer *container,
		     GtkWidget    *widget)
{
  GtkNotebook *notebook;
  GtkNotebookPage *page;
  GList *children;
  guint page_num;

  g_return_if_fail (container != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (container));
  g_return_if_fail (widget != NULL);

  notebook = GTK_NOTEBOOK (container);

  children = notebook->children;
  page_num = 0;
  while (children)
    {
      page = children->data;
      if (page->child == widget)
	{
	  gtk_notebook_real_remove (notebook, children);
	  break;
	}
      page_num++;
      children = children->next;
    }
}

static gint
gtk_notebook_focus (GtkContainer     *container,
		    GtkDirectionType  direction)
{
  GtkNotebook *notebook;
  GtkNotebookPage *page = NULL;
  GtkNotebookPage *old_page = NULL;

  g_return_val_if_fail (container != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_NOTEBOOK (container), FALSE);

  notebook = GTK_NOTEBOOK (container);

  if (!GTK_WIDGET_DRAWABLE (notebook) ||
      !GTK_WIDGET_IS_SENSITIVE (container) ||
      !notebook->children ||
      !notebook->cur_page)
    return FALSE;

  if (!notebook->show_tabs)
    {
      if (GTK_WIDGET_DRAWABLE (notebook->cur_page->child) &&
	  GTK_WIDGET_IS_SENSITIVE (notebook->cur_page->child))
	{
	  if (GTK_IS_CONTAINER (notebook->cur_page->child))
	    {
	      if (gtk_container_focus
		  (GTK_CONTAINER (notebook->cur_page->child), direction))
		return TRUE;
	    }
	  else if (GTK_WIDGET_CAN_FOCUS (notebook->cur_page->child))
	    {
	      if (!container->focus_child)
		{
		  gtk_widget_grab_focus (notebook->cur_page->child);
		  return TRUE;
		}
	    }
	}
      return FALSE;
    }

  if (notebook->focus_tab)
    old_page = notebook->focus_tab->data;

  if (container->focus_child && old_page &&
      container->focus_child == old_page->child && notebook->child_has_focus)
    {
      if (GTK_WIDGET_DRAWABLE (container->focus_child))
	{
	  if (GTK_IS_CONTAINER (container->focus_child) &&
	      !GTK_WIDGET_HAS_FOCUS (container->focus_child))
	    {
	      if (gtk_container_focus (GTK_CONTAINER (container->focus_child),
				       direction))
		return TRUE;
	    }
	  gtk_widget_grab_focus (GTK_WIDGET(notebook));
	  return TRUE;
	}
      notebook->focus_tab = NULL;
      return FALSE;
    }

  if (!GTK_WIDGET_HAS_FOCUS (container))
    notebook->focus_tab = NULL;

  switch (direction)
    {
    case GTK_DIR_TAB_FORWARD:
    case GTK_DIR_RIGHT:
    case GTK_DIR_DOWN:
      gtk_notebook_switch_focus_tab
	(notebook, gtk_notebook_search_page (notebook, notebook->focus_tab,
					     STEP_NEXT, TRUE));
      break;
    case GTK_DIR_TAB_BACKWARD:
    case GTK_DIR_LEFT:
    case GTK_DIR_UP:
      gtk_notebook_switch_focus_tab
	(notebook, gtk_notebook_search_page (notebook, notebook->focus_tab,
					     STEP_PREV, TRUE));
      break;
    }

  if (notebook->focus_tab)
    {
      if (!GTK_WIDGET_HAS_FOCUS (container))
	gtk_widget_grab_focus (GTK_WIDGET (container));

      page = notebook->focus_tab->data;
      if (GTK_WIDGET_MAPPED (page->tab_label))
	gtk_notebook_focus_changed (notebook, old_page);
      else
	{
	  gtk_notebook_pages_allocate (notebook, 
				       &(GTK_WIDGET (notebook)->allocation));
	  gtk_notebook_expose_tabs (notebook);
	}
      return TRUE;
    }

  gtk_notebook_focus_changed (notebook, old_page);
  return FALSE;
}

static void
gtk_notebook_set_focus_child (GtkContainer *container,
			      GtkWidget    *child)
{
  GtkNotebook *notebook;

  g_return_if_fail (container != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (container));
  
  if (child)
    {
      g_return_if_fail (GTK_IS_WIDGET (child));

      notebook = GTK_NOTEBOOK (container);

      notebook->child_has_focus = TRUE;
      if (!notebook->focus_tab)
	{
	  GList *children;
	  GtkNotebookPage *page;

	  children = notebook->children;
	  while (children)
	    {
	      page = children->data;
	      if (page->child == child || page->tab_label == child)
		gtk_notebook_switch_focus_tab (notebook, children);
	      children = children->next;
	    }
	}
    }
  parent_class->set_focus_child (container, child);
}

static void
gtk_notebook_forall (GtkContainer *container,
		     gboolean      include_internals,
		     GtkCallback   callback,
		     gpointer      callback_data)
{
  GtkNotebook *notebook;
  GList *children;

  g_return_if_fail (container != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (container));
  g_return_if_fail (callback != NULL);

  notebook = GTK_NOTEBOOK (container);

  children = notebook->children;
  while (children)
    {
      GtkNotebookPage *page;
      
      page = children->data;
      children = children->next;
      (* callback) (page->child, callback_data);
      if (include_internals)
	{
	  if (page->tab_label)
	    (* callback) (page->tab_label, callback_data);
	  if (page->menu_label)
	    (* callback) (page->menu_label, callback_data);
	}
    }
}

static GtkType
gtk_notebook_child_type (GtkContainer     *container)
{
  return GTK_TYPE_WIDGET;
}

/* Private GtkNotebook Functions:
 *
 * gtk_notebook_panel_realize
 * gtk_notebook_expose_tabs
 * gtk_notebook_focus_changed
 * gtk_notebook_real_remove
 * gtk_notebook_update_labels
 * gtk_notebook_timer
 * gtk_notebook_page_compare
 * gtk_notebook_real_page_position
 * gtk_notebook_search_page
 */
static void
gtk_notebook_panel_realize (GtkNotebook *notebook)
{
  GtkWidget *widget;
  GdkWindowAttr attributes;
  gint attributes_mask;
  
  g_return_if_fail (notebook != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
  
  widget = GTK_WIDGET (notebook);
  
  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.wclass = GDK_INPUT_OUTPUT;
  attributes.visual = gtk_widget_get_visual (widget);
  attributes.colormap = gtk_widget_get_colormap (widget);
  attributes.event_mask = gtk_widget_get_events (widget);
  attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK 
    | GDK_BUTTON_RELEASE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK
    | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK;
  
  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

  attributes.width = 2 * ARROW_SIZE + ARROW_SPACING;
  attributes.height = ARROW_SIZE;

  attributes.x = (widget->allocation.width - attributes.width - 
		  GTK_CONTAINER (notebook)->border_width);
  attributes.y = (widget->allocation.height - ARROW_SIZE -
		  GTK_CONTAINER (notebook)->border_width);
  if (notebook->tab_pos == GTK_POS_TOP)
    attributes.y = GTK_CONTAINER (notebook)->border_width;
  else if (notebook->tab_pos == GTK_POS_LEFT)
    attributes.x = (widget->allocation.x +
		    GTK_CONTAINER (notebook)->border_width);