Robin Gareus
ad51c7c2ba
This is intended mainly for GNU/Linux distros who will remove GTK2 support in the near future.
277 lines
7.9 KiB
C
277 lines
7.9 KiB
C
/* ATK - Accessibility Toolkit
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* Copyright 2014 SUSE LLC.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "atktablecell.h"
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/**
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* SECTION:atktablecell
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* @Short_description: The ATK interface implemented for a cell inside
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* a two-dimentional #AtkTable
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* @Title:AtkTableCell
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*
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* Being #AtkTable a component which present elements ordered via rows
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* and columns, an #AtkTableCell is the interface which each of those
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* elements, so "cells" should implement.
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*
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* See also #AtkTable.
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*/
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typedef AtkTableCellIface AtkTableCellInterface;
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G_DEFINE_INTERFACE (AtkTableCell, atk_table_cell, ATK_TYPE_OBJECT)
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static gboolean atk_table_cell_real_get_row_column_span (AtkTableCell *cell,
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gint *row,
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gint *column,
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gint *row_span,
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gint *column_span);
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static void
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atk_table_cell_default_init (AtkTableCellInterface *iface)
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{
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iface->get_row_column_span = atk_table_cell_real_get_row_column_span;
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}
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/**
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* atk_table_cell_get_column_span:
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* @cell: a GObject instance that implements AtkTableCellIface
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*
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* Returns the number of columns occupied by this cell accessible.
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*
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* Returns: a gint representing the number of columns occupied by this cell,
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* or 0 if the cell does not implement this method.
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*
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* Since: 2.12
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*/
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gint
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atk_table_cell_get_column_span (AtkTableCell *cell)
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{
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AtkTableCellIface *iface;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), 0);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_column_span)
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return (iface->get_column_span) (cell);
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else
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return 0;
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}
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/**
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* atk_table_cell_get_column_header_cells:
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* @cell: a GObject instance that implements AtkTableCellIface
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*
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* Returns the column headers as an array of cell accessibles.
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*
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* Returns: (element-type AtkObject) (transfer full): a GPtrArray of AtkObjects
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* representing the column header cells.
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*
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* Since: 2.12
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*/
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GPtrArray *
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atk_table_cell_get_column_header_cells (AtkTableCell *cell)
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{
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AtkTableCellIface *iface;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), NULL);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_column_header_cells)
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return (iface->get_column_header_cells) (cell);
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else
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return NULL;
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}
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/**
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* atk_table_cell_get_position:
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* @cell: a GObject instance that implements AtkTableCellIface
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* @row: (out): the row of the given cell.
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* @column: (out): the column of the given cell.
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*
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* Retrieves the tabular position of this cell.
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*
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* Returns: TRUE if successful; FALSE otherwise.
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*
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* Since: 2.12
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*/
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gboolean
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atk_table_cell_get_position (AtkTableCell *cell,
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gint *row,
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gint *column)
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{
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AtkTableCellIface *iface;
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gint tmp_row, tmp_column;
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gint *real_row = (row ? row : &tmp_row);
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gint *real_column = (column ? column : &tmp_column);
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*real_row = -1;
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*real_column = -1;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), FALSE);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_position)
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return (iface->get_position) (cell, real_row, real_column);
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else
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return FALSE;
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}
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/**
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* atk_table_cell_get_row_span:
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* @cell: a GObject instance that implements AtkTableCellIface
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*
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* Returns the number of rows occupied by this cell accessible.
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*
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* Returns: a gint representing the number of rows occupied by this cell,
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* or 0 if the cell does not implement this method.
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*
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* Since: 2.12
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*/
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gint
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atk_table_cell_get_row_span (AtkTableCell *cell)
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{
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AtkTableCellIface *iface;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), 0);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_row_span)
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return (iface->get_row_span) (cell);
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else
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return 0;
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}
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/**
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* atk_table_cell_get_row_header_cells:
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* @cell: a GObject instance that implements AtkTableCellIface
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*
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* Returns the row headers as an array of cell accessibles.
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*
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* Returns: (element-type AtkObject) (transfer full): a GPtrArray of AtkObjects
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* representing the row header cells.
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*
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* Since: 2.12
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*/
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GPtrArray *
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atk_table_cell_get_row_header_cells (AtkTableCell *cell)
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{
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AtkTableCellIface *iface;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), NULL);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_row_header_cells)
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return (iface->get_row_header_cells) (cell);
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else
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return NULL;
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}
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/**
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* atk_table_cell_get_row_column_span:
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* @cell: a GObject instance that implements AtkTableCellIface
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* @row: (out): the row index of the given cell.
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* @column: (out): the column index of the given cell.
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* @row_span: (out): the number of rows occupied by this cell.
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* @column_span: (out): the number of columns occupied by this cell.
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*
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* Gets the row and column indexes and span of this cell accessible.
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*
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* Note: If the object does not implement this function, then, by default, atk
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* will implement this function by calling get_row_span and get_column_span
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* on the object.
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*
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* Returns: TRUE if successful; FALSE otherwise.
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*
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* Since: 2.12
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*/
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gboolean
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atk_table_cell_get_row_column_span (AtkTableCell *cell,
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gint *row,
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gint *column,
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gint *row_span,
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gint *column_span)
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{
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AtkTableCellIface *iface;
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gint local_row = 0, local_column = 0;
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gint local_row_span = 0, local_column_span = 0;
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gint *real_row, *real_column;
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gint *real_row_span, *real_column_span;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), FALSE);
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real_row = (row ? row : &local_row);
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real_column = (column ? column : &local_column);
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real_row_span = (row_span ? row_span : &local_row_span);
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real_column_span = (column_span ? column_span : &local_column_span);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_row_column_span)
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return (iface->get_row_column_span) (cell, real_row, real_column,
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real_row_span,
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real_column_span);
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else
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return FALSE;
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}
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/**
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* atk_table_cell_get_table:
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* @cell: a GObject instance that implements AtkTableCellIface
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*
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* Returns a reference to the accessible of the containing table.
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*
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* Returns: (transfer full): the atk object for the containing table.
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*
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* Since: 2.12
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*/
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AtkObject *
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atk_table_cell_get_table (AtkTableCell *cell)
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{
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AtkTableCellIface *iface;
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g_return_val_if_fail (ATK_IS_TABLE_CELL (cell), FALSE);
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iface = ATK_TABLE_CELL_GET_IFACE (cell);
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if (iface->get_table)
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return (iface->get_table) (cell);
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else
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return NULL;
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}
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static gboolean
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atk_table_cell_real_get_row_column_span (AtkTableCell *cell,
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gint *row,
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gint *column,
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gint *row_span,
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gint *column_span)
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{
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atk_table_cell_get_position (cell, row, column);
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*row_span = atk_table_cell_get_row_span (cell);
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*column_span = atk_table_cell_get_column_span (cell);
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return (row != 0 && column != 0 && row_span > 0 && column_span > 0);
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}
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