gtknotebook.c

gtk是linux一款强大的夸平台的图形化开发工具

      break;
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
    }
}

/* Private GtkWidget Methods :
 * 
 * gtk_notebook_map
 * gtk_notebook_unmap
 * gtk_notebook_realize
 * gtk_notebook_size_request
 * gtk_notebook_size_allocate
 * gtk_notebook_draw
 * gtk_notebook_expose
 * gtk_notebook_button_press
 * gtk_notebook_button_release
 * gtk_notebook_enter_notify
 * gtk_notebook_leave_notify
 * gtk_notebook_motion_notify
 * gtk_notebook_key_press
 * gtk_notebook_focus_in
 * gtk_notebook_focus_out
 * gtk_notebook_draw_focus
 * gtk_notebook_style_set
 */
static void
gtk_notebook_map (GtkWidget *widget)
{
  GtkNotebook *notebook;
  GtkNotebookPage *page;
  GList *children;

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

  GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);

  notebook = GTK_NOTEBOOK (widget);

  if (notebook->cur_page && 
      GTK_WIDGET_VISIBLE (notebook->cur_page->child) &&
      !GTK_WIDGET_MAPPED (notebook->cur_page->child))
    gtk_widget_map (notebook->cur_page->child);

  if (notebook->scrollable)
      gtk_notebook_pages_allocate (notebook, &(widget->allocation));
  else
    {
      children = notebook->children;

      while (children)
	{
	  page = children->data;
	  children = children->next;

	  if (page->tab_label && 
	      GTK_WIDGET_VISIBLE (page->child) && 
	      !GTK_WIDGET_MAPPED (page->tab_label))
	    gtk_widget_map (page->tab_label);
	}
    }

  gdk_window_show (widget->window);
}

static void
gtk_notebook_unmap (GtkWidget *widget)
{
  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_NOTEBOOK (widget));

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
  gdk_window_hide (widget->window);
  if (GTK_NOTEBOOK (widget)->panel)
    gdk_window_hide (GTK_NOTEBOOK (widget)->panel);
}

static void
gtk_notebook_realize (GtkWidget *widget)
{
  GtkNotebook *notebook;
  GdkWindowAttr attributes;
  gint attributes_mask;

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

  notebook = GTK_NOTEBOOK (widget);
  GTK_WIDGET_SET_FLAGS (notebook, GTK_REALIZED);

  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.x = widget->allocation.x;
  attributes.y = widget->allocation.y;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  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_KEY_PRESS_MASK);

  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

  widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
  gdk_window_set_user_data (widget->window, notebook);

  widget->style = gtk_style_attach (widget->style, widget->window);
  gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);

  gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
  if (notebook->scrollable)
    gtk_notebook_panel_realize (notebook);
}

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

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

  notebook = GTK_NOTEBOOK (widget);

  if (notebook->panel)
    {
      gdk_window_set_user_data (notebook->panel, NULL);
      gdk_window_destroy (notebook->panel);
      notebook->panel = NULL;
    }

  if (GTK_WIDGET_CLASS (parent_class)->unrealize)
    (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}

static void
gtk_notebook_size_request (GtkWidget      *widget,
			   GtkRequisition *requisition)
{
  GtkNotebook *notebook;
  GtkNotebookPage *page;
  GList *children;
  GtkRequisition child_requisition;
  gboolean switch_page = FALSE;
  gint vis_pages;

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

  notebook = GTK_NOTEBOOK (widget);
  widget->requisition.width = 0;
  widget->requisition.height = 0;

  for (children = notebook->children, vis_pages = 0; children;
       children = children->next)
    {
      page = children->data;

      if (GTK_WIDGET_VISIBLE (page->child))
	{
	  vis_pages++;
	  gtk_widget_size_request (page->child, &child_requisition);
	  
	  widget->requisition.width = MAX (widget->requisition.width,
					   child_requisition.width);
	  widget->requisition.height = MAX (widget->requisition.height,
					    child_requisition.height);

	  if (GTK_WIDGET_MAPPED (page->child) && page != notebook->cur_page)
	    gtk_widget_unmap (page->child);
	  if (notebook->menu && page->menu_label->parent &&
	      !GTK_WIDGET_VISIBLE (page->menu_label->parent))
	    gtk_widget_show (page->menu_label->parent);
	}
      else
	{
	  if (page == notebook->cur_page)
	    switch_page = TRUE;
	  if (notebook->menu && page->menu_label->parent &&
	      GTK_WIDGET_VISIBLE (page->menu_label->parent))
	    gtk_widget_hide (page->menu_label->parent);
	}
    }

  if (notebook->show_border || notebook->show_tabs)
    {
      widget->requisition.width += widget->style->klass->xthickness * 2;
      widget->requisition.height += widget->style->klass->ythickness * 2;

      if (notebook->show_tabs)
	{
	  gint tab_width = 0;
	  gint tab_height = 0;
	  gint tab_max = 0;
	  gint padding;
	  
	  for (children = notebook->children; children;
	       children = children->next)
	    {
	      page = children->data;
	      
	      if (GTK_WIDGET_VISIBLE (page->child))
		{
		  if (!GTK_WIDGET_VISIBLE (page->tab_label))
		    gtk_widget_show (page->tab_label);

		  gtk_widget_size_request (page->tab_label,
					   &child_requisition);

		  page->requisition.width = 
		    child_requisition.width +
		    2 * widget->style->klass->xthickness;
		  page->requisition.height = 
		    child_requisition.height +
		    2 * widget->style->klass->ythickness;
		  
		  switch (notebook->tab_pos)
		    {
		    case GTK_POS_TOP:
		    case GTK_POS_BOTTOM:
		      page->requisition.height += 2 * (notebook->tab_vborder +
						       FOCUS_WIDTH);
		      tab_height = MAX (tab_height, page->requisition.height);
		      tab_max = MAX (tab_max, page->requisition.width);
		      break;
		    case GTK_POS_LEFT:
		    case GTK_POS_RIGHT:
		      page->requisition.width += 2 * (notebook->tab_hborder +
						      FOCUS_WIDTH);
		      tab_width = MAX (tab_width, page->requisition.width);
		      tab_max = MAX (tab_max, page->requisition.height);
		      break;
		    }
		}
	      else if (GTK_WIDGET_VISIBLE (page->tab_label))
		gtk_widget_hide (page->tab_label);
	    }

	  children = notebook->children;

	  if (vis_pages)
	    {
	      switch (notebook->tab_pos)
		{
		case GTK_POS_TOP:
		case GTK_POS_BOTTOM:
		  if (tab_height == 0)
		    break;

		  if (notebook->scrollable && vis_pages > 1 && 
		      widget->requisition.width < tab_width)
		    tab_height = MAX (tab_height, ARROW_SIZE);

		  padding = 2 * (TAB_CURVATURE + FOCUS_WIDTH +
				 notebook->tab_hborder) - TAB_OVERLAP;
		  tab_max += padding;
		  while (children)
		    {
		      page = children->data;
		      children = children->next;
		  
		      if (!GTK_WIDGET_VISIBLE (page->child))
			continue;

		      if (notebook->homogeneous)
			page->requisition.width = tab_max;
		      else
			page->requisition.width += padding;

		      tab_width += page->requisition.width;
		      page->requisition.height = tab_height;
		    }

		  if (notebook->scrollable && vis_pages > 1 &&
		      widget->requisition.width < tab_width)
		    tab_width = tab_max + 2 * (ARROW_SIZE + ARROW_SPACING);

                  if (notebook->homogeneous && !notebook->scrollable)
                    widget->requisition.width = MAX (widget->requisition.width,
                                                     vis_pages * tab_max +
                                                     TAB_OVERLAP);
                  else
                    widget->requisition.width = MAX (widget->requisition.width,
                                                     tab_width + TAB_OVERLAP);

		  widget->requisition.height += tab_height;
		  break;
		case GTK_POS_LEFT:
		case GTK_POS_RIGHT:
		  if (tab_width == 0)
		    break;

		  if (notebook->scrollable && vis_pages > 1 && 
		      widget->requisition.height < tab_height)
		    tab_width = MAX (tab_width, ARROW_SPACING +2 * ARROW_SIZE);

		  padding = 2 * (TAB_CURVATURE + FOCUS_WIDTH +
				 notebook->tab_vborder) - TAB_OVERLAP;
		  tab_max += padding;

		  while (children)
		    {
		      page = children->data;
		      children = children->next;

		      if (!GTK_WIDGET_VISIBLE (page->child))
			continue;

		      page->requisition.width   = tab_width;

		      if (notebook->homogeneous)
			page->requisition.height = tab_max;
		      else
			page->requisition.height += padding;

		      tab_height += page->requisition.height;
		    }

		  if (notebook->scrollable && vis_pages > 1 && 
		      widget->requisition.height < tab_height)
		    tab_height = tab_max + ARROW_SIZE + ARROW_SPACING;

		  widget->requisition.width += tab_width;

                  if (notebook->homogeneous && !notebook->scrollable)
                    widget->requisition.height =
		      MAX (widget->requisition.height,
			   vis_pages * tab_max + TAB_OVERLAP);
                  else
                    widget->requisition.height =
		      MAX (widget->requisition.height,
			   tab_height + TAB_OVERLAP);

		  if (!notebook->homogeneous || notebook->scrollable)
		    vis_pages = 1;
		  widget->requisition.height = MAX (widget->requisition.height,
						    vis_pages * tab_max +
						    TAB_OVERLAP);
		  break;
		}
	    }
	}
    }

  widget->requisition.width += GTK_CONTAINER (widget)->border_width * 2;
  widget->requisition.height += GTK_CONTAINER (widget)->border_width * 2;

  if (switch_page)
    {
      if (vis_pages)
	{
	  for (children = notebook->children; children;
	       children = children->next)
	    {
	      page = children->data;
	      if (GTK_WIDGET_VISIBLE (page->child))
		{
		  gtk_notebook_switch_page (notebook, page, -1);
		  break;
		}
	    }
	}
      else if (GTK_WIDGET_VISIBLE (widget))
	{
	  widget->requisition.width = GTK_CONTAINER (widget)->border_width * 2;
	  widget->requisition.height= GTK_CONTAINER (widget)->border_width * 2;
	}
    }
  if (vis_pages && !notebook->cur_page)
    {
      children = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, TRUE);
      if (children)
	{
	  notebook->first_tab = children;
	  gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (children),-1);
	}
    }
}

static void
gtk_notebook_size_allocate (GtkWidget     *widget,
			    GtkAllocation *allocation)
{
  GtkNotebook *notebook;
  GtkNotebookPage *page;
  GtkAllocation child_allocation;
  GList *children;

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

  widget->allocation = *allocation;
  if (GTK_WIDGET_REALIZED (widget))
    gdk_window_move_resize (widget->window,
			    allocation->x, allocation->y,
			    allocation->width, allocation->height);

  notebook = GTK_NOTEBOOK (widget);
  if (notebook->children)
    {
      child_allocation.x = GTK_CONTAINER (widget)->border_width;
      child_allocation.y = GTK_CONTAINER (widget)->border_width;
      child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
      child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);

      if (notebook->show_tabs || notebook->show_border)
	{
	  child_allocation.x += widget->style->klass->xthickness;
	  child_allocation.y += widget->style->klass->ythickness;
	  child_allocation.width = MAX (1, (gint)child_allocation.width -
					(gint) widget->style->klass->xthickness * 2);
	  child_allocation.height = MAX (1, (gint)child_allocation.height -
					 (gint) widget->style->klass->ythickness * 2);

	  if (notebook->show_tabs && notebook->children && notebook->cur_page)
	    {
	      switch (notebook->tab_pos)
		{
		case GTK_POS_TOP:
		  child_allocation.y += notebook->cur_page->requisition.height;
		case GTK_POS_BOTTOM:
		  child_allocation.height =
		    MAX (1, (gint)child_allocation.height -
			 (gint)notebook->cur_page->requisition.height);
		  break;
		case GTK_POS_LEFT:
		  child_allocation.x += notebook->cur_page->requisition.width;
		case GTK_POS_RIGHT:
		  child_allocation.width =
		    MAX (1, (gint)child_allocation.width -
			 (gint)notebook->cur_page->requisition.width);
		  break;
		}
	    }
	}

      children = notebook->children;
      while (children)
	{
	  page = children->data;
	  children = children->next;
	  
	  if (GTK_WIDGET_VISIBLE (page->child))
	    gtk_widget_size_allocate (page->child, &child_allocation);
	}

      gtk_notebook_pages_allocate (notebook, allocation);
    }
   gtk_notebook_set_shape (notebook);
}

static void
gtk_notebook_draw (GtkWidget    *widget,
		   GdkRectangle *area)