adamdunkels | eb0df01 | 2003-04-09 19:16:49 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2003, Adam Dunkels. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above |
| 11 | * copyright notice, this list of conditions and the following |
| 12 | * disclaimer in the documentation and/or other materials provided |
| 13 | * with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this |
| 15 | * software must display the following acknowledgement: |
| 16 | * This product includes software developed by Adam Dunkels. |
| 17 | * 4. The name of the author may not be used to endorse or promote |
| 18 | * products derived from this software without specific prior |
| 19 | * written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 22 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 23 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 25 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| 27 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 29 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | * |
| 33 | * This an example program for the Contiki desktop OS |
| 34 | * |
adamdunkels | c97a60b | 2003-04-11 20:12:34 +0000 | [diff] [blame^] | 35 | * $Id: calc.c,v 1.2 2003/04/11 20:12:34 adamdunkels Exp $ |
adamdunkels | eb0df01 | 2003-04-09 19:16:49 +0000 | [diff] [blame] | 36 | * |
| 37 | */ |
| 38 | |
| 39 | /* This is an example of how to write programs for Contiki. It |
| 40 | displays a window with the famous message "Hello world" and two |
| 41 | buttons; one which changes the message slightly and one which quits |
| 42 | the application. */ |
| 43 | |
| 44 | #include "ctk.h" |
| 45 | #include "dispatcher.h" |
| 46 | #include "loader.h" |
| 47 | |
| 48 | static struct ctk_window window; |
| 49 | |
| 50 | static char input[16]; |
| 51 | static struct ctk_label inputlabel = |
| 52 | {CTK_LABEL(0, 0, 15, 1, input)}; |
| 53 | |
| 54 | static struct ctk_button addbutton = |
| 55 | {CTK_BUTTON(0, 1, 1, "+")}; |
| 56 | static struct ctk_button subbutton = |
| 57 | {CTK_BUTTON(3, 1, 1, "-")}; |
| 58 | static struct ctk_button mulbutton = |
| 59 | {CTK_BUTTON(6, 1, 1, "*")}; |
| 60 | static struct ctk_button divbutton = |
| 61 | {CTK_BUTTON(9, 1, 1, "/")}; |
| 62 | static struct ctk_button calcbutton = |
| 63 | {CTK_BUTTON(12, 1, 1, "=")}; |
| 64 | |
| 65 | static DISPATCHER_SIGHANDLER(calc_sighandler, s, data); |
| 66 | static struct dispatcher_proc p = |
adamdunkels | c97a60b | 2003-04-11 20:12:34 +0000 | [diff] [blame^] | 67 | {DISPATCHER_PROC("Calculator", NULL, calc_sighandler, NULL)}; |
adamdunkels | eb0df01 | 2003-04-09 19:16:49 +0000 | [diff] [blame] | 68 | static ek_id_t id; |
| 69 | |
| 70 | static unsigned int operand1, operand2; |
| 71 | static unsigned char op; |
| 72 | #define OP_ADD 1 |
| 73 | #define OP_SUB 2 |
| 74 | #define OP_MUL 3 |
| 75 | #define OP_DIV 4 |
| 76 | |
| 77 | /*-----------------------------------------------------------------------------------*/ |
| 78 | LOADER_INIT_FUNC(calc_init) |
| 79 | { |
| 80 | unsigned char i; |
| 81 | |
| 82 | if(id == EK_ID_NONE) { |
| 83 | id = dispatcher_start(&p); |
| 84 | |
| 85 | ctk_window_new(&window, 15, 2, "Calc"); |
| 86 | |
| 87 | CTK_WIDGET_ADD(&window, &inputlabel); |
| 88 | |
| 89 | CTK_WIDGET_ADD(&window, &addbutton); |
| 90 | CTK_WIDGET_ADD(&window, &subbutton); |
| 91 | CTK_WIDGET_ADD(&window, &mulbutton); |
| 92 | CTK_WIDGET_ADD(&window, &divbutton); |
| 93 | CTK_WIDGET_ADD(&window, &calcbutton); |
| 94 | |
| 95 | CTK_WIDGET_FOCUS(&window, &addbutton); |
| 96 | |
| 97 | dispatcher_listen(ctk_signal_button_activate); |
| 98 | dispatcher_listen(ctk_signal_window_close); |
| 99 | dispatcher_listen(ctk_signal_keypress); |
| 100 | |
| 101 | for(i = 0; i < sizeof(input); ++i) { |
| 102 | input[i] = ' '; |
| 103 | } |
| 104 | } |
| 105 | ctk_window_open(&window); |
| 106 | } |
| 107 | /*-----------------------------------------------------------------------------------*/ |
| 108 | static void |
| 109 | calc_quit(void) |
| 110 | { |
| 111 | dispatcher_exit(&p); |
| 112 | id = EK_ID_NONE; |
| 113 | LOADER_UNLOAD(); |
adamdunkels | eb0df01 | 2003-04-09 19:16:49 +0000 | [diff] [blame] | 114 | } |
| 115 | /*-----------------------------------------------------------------------------------*/ |
| 116 | static void |
| 117 | input_to_operand1(void) |
| 118 | { |
| 119 | unsigned int m; |
| 120 | unsigned char i; |
| 121 | |
| 122 | operand1 = 0; |
| 123 | for(m = 1, i = 14; |
| 124 | i > 9; --i, m *= 10) { |
| 125 | if(input[i] >= '0' && |
| 126 | input[i] <= '9') { |
| 127 | operand1 += (input[i] - '0') * m; |
| 128 | } |
| 129 | input[i] = ' '; |
| 130 | } |
| 131 | input[14] = ' '; |
| 132 | } |
| 133 | /*-----------------------------------------------------------------------------------*/ |
| 134 | static void |
| 135 | operand2_to_input(void) |
| 136 | { |
| 137 | unsigned char i; |
| 138 | |
| 139 | input[10] = (operand2/10000) % 10 + '0'; |
| 140 | input[11] = (operand2/1000) % 10 + '0'; |
| 141 | input[12] = (operand2/100) % 10 + '0'; |
| 142 | input[13] = (operand2/10) % 10 + '0'; |
| 143 | input[14] = operand2 % 10 + '0'; |
| 144 | |
| 145 | for(i = 0; i < 4; ++i) { |
| 146 | if(input[10 + i] == '0') { |
| 147 | input[10 + i] = ' '; |
| 148 | } else { |
| 149 | break; |
| 150 | } |
| 151 | } |
| 152 | } |
| 153 | /*-----------------------------------------------------------------------------------*/ |
| 154 | static void |
| 155 | calculate(void) |
| 156 | { |
| 157 | operand2 = operand1; |
| 158 | input_to_operand1(); |
| 159 | switch(op) { |
| 160 | case OP_ADD: |
| 161 | operand2 = operand2 + operand1; |
| 162 | break; |
| 163 | case OP_SUB: |
| 164 | operand2 = operand2 - operand1; |
| 165 | break; |
| 166 | case OP_MUL: |
| 167 | operand2 = operand2 * operand1; |
| 168 | break; |
| 169 | case OP_DIV: |
| 170 | operand2 = operand2 / operand1; |
| 171 | break; |
| 172 | } |
| 173 | operand2_to_input(); |
| 174 | } |
| 175 | /*-----------------------------------------------------------------------------------*/ |
| 176 | static |
| 177 | DISPATCHER_SIGHANDLER(calc_sighandler, s, data) |
| 178 | { |
| 179 | unsigned char i; |
| 180 | DISPATCHER_SIGHANDLER_ARGS(s, data); |
| 181 | |
| 182 | if(s == ctk_signal_keypress) { |
| 183 | if((char)data >= '0' && |
| 184 | (char)data <= '9') { |
| 185 | for(i = 0; i < 14; ++i) { |
| 186 | input[i] = input[i + 1]; |
| 187 | } |
| 188 | input[14] = (char)data; |
| 189 | } else if((char)data == ' ') { |
| 190 | for(i = 0; i < sizeof(input); ++i) { |
| 191 | input[i] = ' '; |
| 192 | } |
| 193 | } else if((char)data == '+') { |
| 194 | input_to_operand1(); |
| 195 | op = OP_ADD; |
| 196 | } else if((char)data == '-') { |
| 197 | input_to_operand1(); |
| 198 | op = OP_SUB; |
| 199 | } else if((char)data == '*') { |
| 200 | input_to_operand1(); |
| 201 | op = OP_MUL; |
| 202 | } else if((char)data == '/') { |
| 203 | input_to_operand1(); |
| 204 | op = OP_DIV; |
| 205 | } else if((char)data == '=') { |
| 206 | calculate(); |
| 207 | } |
| 208 | |
| 209 | CTK_WIDGET_REDRAW(&inputlabel); |
| 210 | } else if(s == ctk_signal_button_activate) { |
| 211 | if(data == (ek_data_t)&calcbutton) { |
| 212 | calculate(); |
| 213 | } else if(data == (ek_data_t)&addbutton) { |
| 214 | input_to_operand1(); |
| 215 | op = OP_ADD; |
| 216 | } else if(data == (ek_data_t)&subbutton) { |
| 217 | input_to_operand1(); |
| 218 | op = OP_SUB; |
| 219 | } else if(data == (ek_data_t)&mulbutton) { |
| 220 | input_to_operand1(); |
| 221 | op = OP_MUL; |
| 222 | } else if(data == (ek_data_t)&divbutton) { |
| 223 | input_to_operand1(); |
| 224 | op = OP_DIV; |
| 225 | } |
| 226 | CTK_WIDGET_REDRAW(&inputlabel); |
| 227 | } else if(s == ctk_signal_window_close && |
| 228 | data == (ek_data_t)&window) { |
| 229 | calc_quit(); |
| 230 | } |
| 231 | } |
| 232 | /*-----------------------------------------------------------------------------------*/ |