gtklistitem.c

gtk是linux一款强大的夸平台的图形化开发工具

gtk_list_item_new_with_label (const gchar *label)
{
  GtkWidget *list_item;
  GtkWidget *label_widget;

  list_item = gtk_list_item_new ();
  label_widget = gtk_label_new (label);
  gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);

  gtk_container_add (GTK_CONTAINER (list_item), label_widget);
  gtk_widget_show (label_widget);

  return list_item;
}

void
gtk_list_item_select (GtkListItem *list_item)
{
  gtk_item_select (GTK_ITEM (list_item));
}

void
gtk_list_item_deselect (GtkListItem *list_item)
{
  gtk_item_deselect (GTK_ITEM (list_item));
}


static void
gtk_list_item_realize (GtkWidget *widget)
{
  GdkWindowAttr attributes;
  gint attributes_mask;

  /*if (GTK_WIDGET_CLASS (parent_class)->realize)
    (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);*/

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

  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

  attributes.x = widget->allocation.x;
  attributes.y = widget->allocation.y;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  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) |
			   GDK_EXPOSURE_MASK |
			   GDK_BUTTON_PRESS_MASK |
			   GDK_BUTTON_RELEASE_MASK |
			   GDK_KEY_PRESS_MASK |
			   GDK_KEY_RELEASE_MASK |
			   GDK_ENTER_NOTIFY_MASK |
			   GDK_LEAVE_NOTIFY_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, widget);

  widget->style = gtk_style_attach (widget->style, widget->window);
  gdk_window_set_background (widget->window, 
			     &widget->style->base[GTK_STATE_NORMAL]);
}

static void
gtk_list_item_size_request (GtkWidget      *widget,
			    GtkRequisition *requisition)
{
  GtkBin *bin;
  GtkRequisition child_requisition;

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

  bin = GTK_BIN (widget);

  requisition->width = (GTK_CONTAINER (widget)->border_width +
			widget->style->klass->xthickness) * 2;
  requisition->height = GTK_CONTAINER (widget)->border_width * 2;

  if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
    {
      gtk_widget_size_request (bin->child, &child_requisition);

      requisition->width += child_requisition.width;
      requisition->height += child_requisition.height;
    }
}

static void
gtk_list_item_size_allocate (GtkWidget     *widget,
			     GtkAllocation *allocation)
{
  GtkBin *bin;
  GtkAllocation child_allocation;

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

  bin = GTK_BIN (widget);

  if (bin->child)
    {
      child_allocation.x = (GTK_CONTAINER (widget)->border_width +
			    widget->style->klass->xthickness);
      child_allocation.y = GTK_CONTAINER (widget)->border_width;
      child_allocation.width = allocation->width - child_allocation.x * 2;
      child_allocation.height = allocation->height - child_allocation.y * 2;

      gtk_widget_size_allocate (bin->child, &child_allocation);
    }
}

static void 
gtk_list_item_style_set	(GtkWidget      *widget,
			 GtkStyle       *previous_style)
{
  g_return_if_fail (widget != NULL);

  if (previous_style && GTK_WIDGET_REALIZED (widget))
    gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
}

static void
gtk_list_item_draw (GtkWidget    *widget,
		    GdkRectangle *area)
{
  GtkBin *bin;
  GdkRectangle child_area;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_LIST_ITEM (widget));
  g_return_if_fail (area != NULL);

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      bin = GTK_BIN (widget);

      if (widget->state == GTK_STATE_NORMAL)
	{
	  gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
	  gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
	}
      else
	{
	  gtk_paint_flat_box(widget->style, widget->window, 
			     widget->state, GTK_SHADOW_ETCHED_OUT,
			     area, widget, "listitem",
			     0, 0, -1, -1);	      
	}

      if (bin->child && gtk_widget_intersect (bin->child, area, &child_area))
	gtk_widget_draw (bin->child, &child_area);

      if (GTK_WIDGET_HAS_FOCUS (widget))
	{
	  if (GTK_IS_LIST (widget->parent) && GTK_LIST (widget->parent)->add_mode)
	    gtk_paint_focus (widget->style, widget->window,
			     NULL, widget, "add-mode",
			     0, 0,
			     widget->allocation.width - 1,
			     widget->allocation.height - 1);
	  else
	    gtk_paint_focus (widget->style, widget->window,
			     NULL, widget, NULL,
			     0, 0,
			     widget->allocation.width - 1,
			     widget->allocation.height - 1);
	}
    }
}

static void
gtk_list_item_draw_focus (GtkWidget *widget)
{
  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_LIST_ITEM (widget));
  
  gtk_widget_draw(widget, NULL);
}

static gint
gtk_list_item_button_press (GtkWidget      *widget,
			    GdkEventButton *event)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (event->type == GDK_BUTTON_PRESS)
    if (!GTK_WIDGET_HAS_FOCUS (widget))
      gtk_widget_grab_focus (widget);

  return FALSE;
}

static gint
gtk_list_item_expose (GtkWidget      *widget,
		      GdkEventExpose *event)
{
  GtkBin *bin;
  GdkEventExpose child_event;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      bin = GTK_BIN (widget);

      if (!GTK_WIDGET_IS_SENSITIVE (widget))
	gdk_window_set_background (widget->window, &widget->style->bg[GTK_STATE_INSENSITIVE]);
      else if (widget->state == GTK_STATE_NORMAL)
	gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
      else
	gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);

      gdk_window_clear_area (widget->window, event->area.x, event->area.y,
			     event->area.width, event->area.height);

      if (bin->child)
	{
	  child_event = *event;

	  if (GTK_WIDGET_NO_WINDOW (bin->child) &&
	      gtk_widget_intersect (bin->child, &event->area, &child_event.area))
	    gtk_widget_event (bin->child, (GdkEvent*) &child_event);
	}

      gtk_widget_draw_focus (widget);
    }

  return FALSE;
}

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

  GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
  gtk_widget_draw_focus (widget);

  return FALSE;
}

static gint
gtk_list_item_focus_out (GtkWidget     *widget,
			 GdkEventFocus *event)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_LIST_ITEM (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_real_list_item_select (GtkItem *item)
{
  g_return_if_fail (item != NULL);
  g_return_if_fail (GTK_IS_LIST_ITEM (item));

  switch (GTK_WIDGET (item)->state)
    {
    case GTK_STATE_SELECTED:
    case GTK_STATE_INSENSITIVE:
      break;
    default:
      gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
      break;
    }
}

static void
gtk_real_list_item_deselect (GtkItem *item)
{
  g_return_if_fail (item != NULL);
  g_return_if_fail (GTK_IS_LIST_ITEM (item));

  if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
    gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
}

static void
gtk_real_list_item_toggle (GtkItem *item)
{
  g_return_if_fail (item != NULL);
  g_return_if_fail (GTK_IS_LIST_ITEM (item));
  
  switch (GTK_WIDGET (item)->state)
    {
    case GTK_STATE_SELECTED:
      gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
      break;
    case GTK_STATE_INSENSITIVE:
      break;
    default:
      gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
      break;
    }
}