1 /* 2 * Keypad description access. 3 * 4 * Copyright (C) 2018, 2023 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <l4/sys/types.h> 25 26 #ifdef __cplusplus 27 28 class Keypad_generic 29 { 30 public: 31 virtual int columns(void) = 0; 32 virtual int rows(void) = 0; 33 virtual int code(int column, int row) = 0; 34 static Keypad_generic *get_keypad(); 35 }; 36 37 #endif 38 39 /* C language interface. */ 40 41 EXTERN_C_BEGIN 42 43 void *keypad_get(void); 44 int keypad_columns(void *keypad); 45 int keypad_rows(void *keypad); 46 int keypad_code(void *keypad, int column, int row); 47 48 EXTERN_C_END