gtkclist.c

gtk是linux一款强大的夸平台的图形化开发工具

  clist->column[column].button_passive = FALSE;

  gtk_signal_disconnect_by_func (GTK_OBJECT (clist->column[column].button),
				 (GtkSignalFunc) column_title_passive_func,
				 NULL);

  GTK_WIDGET_SET_FLAGS (clist->column[column].button, GTK_CAN_FOCUS);
  if (GTK_WIDGET_VISIBLE (clist))
    gtk_widget_queue_draw (clist->column[column].button);
}

void
gtk_clist_column_title_passive (GtkCList *clist,
				gint      column)
{
  GtkButton *button;

  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;
  if (!clist->column[column].button || clist->column[column].button_passive)
    return;

  button = GTK_BUTTON (clist->column[column].button);

  clist->column[column].button_passive = TRUE;

  if (button->button_down)
    gtk_button_released (button);
  if (button->in_button)
    gtk_button_leave (button);

  gtk_signal_connect (GTK_OBJECT (clist->column[column].button), "event",
		      (GtkSignalFunc) column_title_passive_func, NULL);

  GTK_WIDGET_UNSET_FLAGS (clist->column[column].button, GTK_CAN_FOCUS);
  if (GTK_WIDGET_VISIBLE (clist))
    gtk_widget_queue_draw (clist->column[column].button);
}

void
gtk_clist_column_titles_active (GtkCList *clist)
{
  gint i;

  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (!GTK_CLIST_SHOW_TITLES(clist))
    return;

  for (i = 0; i < clist->columns; i++)
    gtk_clist_column_title_active (clist, i);
}

void
gtk_clist_column_titles_passive (GtkCList *clist)
{
  gint i;

  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (!GTK_CLIST_SHOW_TITLES(clist))
    return;

  for (i = 0; i < clist->columns; i++)
    gtk_clist_column_title_passive (clist, i);
}

void
gtk_clist_set_column_title (GtkCList    *clist,
			    gint         column,
			    const gchar *title)
{
  gint new_button = 0;
  GtkWidget *old_widget;
  GtkWidget *alignment = NULL;
  GtkWidget *label;

  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;

  /* if the column button doesn't currently exist,
   * it has to be created first */
  if (!clist->column[column].button)
    {
      column_button_create (clist, column);
      new_button = 1;
    }

  column_title_new (clist, column, title);

  /* remove and destroy the old widget */
  old_widget = GTK_BIN (clist->column[column].button)->child;
  if (old_widget)
    gtk_container_remove (GTK_CONTAINER (clist->column[column].button), old_widget);

  /* create new alignment based no column justification */
  switch (clist->column[column].justification)
    {
    case GTK_JUSTIFY_LEFT:
      alignment = gtk_alignment_new (0.0, 0.5, 0.0, 0.0);
      break;

    case GTK_JUSTIFY_RIGHT:
      alignment = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
      break;

    case GTK_JUSTIFY_CENTER:
      alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
      break;

    case GTK_JUSTIFY_FILL:
      alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
      break;
    }

  gtk_widget_push_composite_child ();
  label = gtk_label_new (clist->column[column].title);
  gtk_widget_pop_composite_child ();
  gtk_container_add (GTK_CONTAINER (alignment), label);
  gtk_container_add (GTK_CONTAINER (clist->column[column].button), alignment);
  gtk_widget_show (label);
  gtk_widget_show (alignment);

  /* if this button didn't previously exist, then the
   * column button positions have to be re-computed */
  if (GTK_WIDGET_VISIBLE (clist) && new_button)
    size_allocate_title_buttons (clist);
}

gchar *
gtk_clist_get_column_title (GtkCList *clist,
			    gint      column)
{
  g_return_val_if_fail (clist != NULL, NULL);
  g_return_val_if_fail (GTK_IS_CLIST (clist), NULL);

  if (column < 0 || column >= clist->columns)
    return NULL;

  return clist->column[column].title;
}

void
gtk_clist_set_column_widget (GtkCList  *clist,
			     gint       column,
			     GtkWidget *widget)
{
  gint new_button = 0;
  GtkWidget *old_widget;

  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;

  /* if the column button doesn't currently exist,
   * it has to be created first */
  if (!clist->column[column].button)
    {
      column_button_create (clist, column);
      new_button = 1;
    }

  column_title_new (clist, column, NULL);

  /* remove and destroy the old widget */
  old_widget = GTK_BIN (clist->column[column].button)->child;
  if (old_widget)
    gtk_container_remove (GTK_CONTAINER (clist->column[column].button),
			  old_widget);

  /* add and show the widget */
  if (widget)
    {
      gtk_container_add (GTK_CONTAINER (clist->column[column].button), widget);
      gtk_widget_show (widget);
    }

  /* if this button didn't previously exist, then the
   * column button positions have to be re-computed */
  if (GTK_WIDGET_VISIBLE (clist) && new_button)
    size_allocate_title_buttons (clist);
}

GtkWidget *
gtk_clist_get_column_widget (GtkCList *clist,
			     gint      column)
{
  g_return_val_if_fail (clist != NULL, NULL);
  g_return_val_if_fail (GTK_IS_CLIST (clist), NULL);

  if (column < 0 || column >= clist->columns)
    return NULL;

  if (clist->column[column].button)
    return GTK_BUTTON (clist->column[column].button)->child;

  return NULL;
}

void
gtk_clist_set_column_justification (GtkCList         *clist,
				    gint              column,
				    GtkJustification  justification)
{
  GtkWidget *alignment;

  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;

  clist->column[column].justification = justification;

  /* change the alinment of the button title if it's not a
   * custom widget */
  if (clist->column[column].title)
    {
      alignment = GTK_BIN (clist->column[column].button)->child;

      switch (clist->column[column].justification)
	{
	case GTK_JUSTIFY_LEFT:
	  gtk_alignment_set (GTK_ALIGNMENT (alignment), 0.0, 0.5, 0.0, 0.0);
	  break;

	case GTK_JUSTIFY_RIGHT:
	  gtk_alignment_set (GTK_ALIGNMENT (alignment), 1.0, 0.5, 0.0, 0.0);
	  break;

	case GTK_JUSTIFY_CENTER:
	  gtk_alignment_set (GTK_ALIGNMENT (alignment), 0.5, 0.5, 0.0, 0.0);
	  break;

	case GTK_JUSTIFY_FILL:
	  gtk_alignment_set (GTK_ALIGNMENT (alignment), 0.5, 0.5, 0.0, 0.0);
	  break;

	default:
	  break;
	}
    }

  if (CLIST_UNFROZEN (clist))
    draw_rows (clist, NULL);
}

void
gtk_clist_set_column_visibility (GtkCList *clist,
				 gint      column,
				 gboolean  visible)
{
  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;
  if (clist->column[column].visible == visible)
    return;

  /* don't hide last visible column */
  if (!visible)
    {
      gint i;
      gint vis_columns = 0;

      for (i = 0, vis_columns = 0; i < clist->columns && vis_columns < 2; i++)
	if (clist->column[i].visible)
	  vis_columns++;

      if (vis_columns < 2)
	return;
    }

  clist->column[column].visible = visible;

  if (clist->column[column].button)
    {
      if (visible)
	gtk_widget_show (clist->column[column].button);
      else
	gtk_widget_hide (clist->column[column].button);
    }
  
  gtk_widget_queue_resize (GTK_WIDGET(clist));
}

void
gtk_clist_set_column_resizeable (GtkCList *clist,
				 gint      column,
				 gboolean  resizeable)
{
  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;
  if (clist->column[column].resizeable == resizeable)
    return;

  clist->column[column].resizeable = resizeable;
  if (resizeable)
    clist->column[column].auto_resize = FALSE;

  if (GTK_WIDGET_VISIBLE (clist))
    size_allocate_title_buttons (clist);
}

void
gtk_clist_set_column_auto_resize (GtkCList *clist,
				  gint      column,
				  gboolean  auto_resize)
{
  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;
  if (clist->column[column].auto_resize == auto_resize)
    return;

  clist->column[column].auto_resize = auto_resize;
  if (auto_resize)
    {
      clist->column[column].resizeable = FALSE;
      if (!GTK_CLIST_AUTO_RESIZE_BLOCKED(clist))
	{
	  gint width;

	  width = gtk_clist_optimal_column_width (clist, column);
	  gtk_clist_set_column_width (clist, column, width);
	}
    }

  if (GTK_WIDGET_VISIBLE (clist))
    size_allocate_title_buttons (clist);
}

gint
gtk_clist_columns_autosize (GtkCList *clist)
{
  gint i;
  gint width;

  g_return_val_if_fail (clist != NULL, 0);
  g_return_val_if_fail (GTK_IS_CLIST (clist), 0);

  gtk_clist_freeze (clist);
  width = 0;
  for (i = 0; i < clist->columns; i++)
    {
      gtk_clist_set_column_width (clist, i,
				  gtk_clist_optimal_column_width (clist, i));

      width += clist->column[i].width;
    }

  gtk_clist_thaw (clist);
  return width;
}

gint
gtk_clist_optimal_column_width (GtkCList *clist,
				gint      column)
{
  GtkRequisition requisition;
  GList *list;
  gint width;

  g_return_val_if_fail (clist != NULL, 0);
  g_return_val_if_fail (GTK_CLIST (clist), 0);

  if (column < 0 || column > clist->columns)
    return 0;

  if (GTK_CLIST_SHOW_TITLES(clist) && clist->column[column].button)
    width = (clist->column[column].button->requisition.width)
#if 0
	     (CELL_SPACING + (2 * COLUMN_INSET)))
#endif
		;
  else
    width = 0;

  for (list = clist->row_list; list; list = list->next)
    {
      GTK_CLIST_CLASS_FW (clist)->cell_size_request
	(clist, GTK_CLIST_ROW (list), column, &requisition);
      width = MAX (width, requisition.width);
    }

  return width;
}

void
gtk_clist_set_column_width (GtkCList *clist,
			    gint      column,
			    gint      width)
{
  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;

  gtk_signal_emit (GTK_OBJECT (clist), clist_signals[RESIZE_COLUMN],
		   column, width);
}

void
gtk_clist_set_column_min_width (GtkCList *clist,
				gint      column,
				gint      min_width)
{
  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));

  if (column < 0 || column >= clist->columns)
    return;
  if (clist->column[column].min_width == min_width)
    return;

  if (clist->column[column].max_width >= 0  &&
      clist->column[column].max_width < min_width)
    clist->column[column].min_width = clist->column[column].max_width;
  else
    clist->column[column].min_width = min_width;