Mercurial > MadButterfly
annotate examples/calculator/main.c @ 335:01038b8d8f05
Set the progm to be NULL so that we won't call mb_progm_abort when we call it at the next time. This will fix the crash issue of the dynamic. However, the dynamic is still crash sometimes if we click the button quickly. It looks like it crashes in the refresh. We need to future figure out the issue.
| author | wycc |
|---|---|
| date | Sat, 07 Mar 2009 14:24:55 +0800 |
| parents | c8b6ca46950b |
| children | 331467b8e778 |
| rev | line source |
|---|---|
| 88 | 1 #include <stdio.h> |
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2 #include <mb.h> |
| 88 | 3 #include "calculator_scr.h" |
| 4 | |
| 94 | 5 typedef struct _calc_data calc_data_t; |
| 6 struct _calc_data { | |
| 88 | 7 X_MB_runtime_t *rt; |
| 8 calculator_scr_t *code; | |
| 9 }; | |
| 10 | |
| 11 static struct { | |
| 12 int c; | |
| 13 int off; | |
| 14 } tgt_list[] = { | |
| 15 { 0, OFFSET(calculator_scr_t, but_0) }, | |
| 16 { 1, OFFSET(calculator_scr_t, but_1) }, | |
| 17 { 2, OFFSET(calculator_scr_t, but_2) }, | |
| 18 { 3, OFFSET(calculator_scr_t, but_3) }, | |
| 19 { 4, OFFSET(calculator_scr_t, but_4) }, | |
| 20 { 5, OFFSET(calculator_scr_t, but_5) }, | |
| 21 { 6, OFFSET(calculator_scr_t, but_6) }, | |
| 22 { 7, OFFSET(calculator_scr_t, but_7) }, | |
| 23 { 8, OFFSET(calculator_scr_t, but_8) }, | |
| 24 { 9, OFFSET(calculator_scr_t, but_9) }, | |
| 25 { '+', OFFSET(calculator_scr_t, but_add) }, | |
| 26 { '-', OFFSET(calculator_scr_t, but_minus) }, | |
| 27 { '*', OFFSET(calculator_scr_t, but_mul) }, | |
| 28 { '/', OFFSET(calculator_scr_t, but_div) }, | |
| 29 { '=', OFFSET(calculator_scr_t, but_eq) }, | |
| 30 { 'c', OFFSET(calculator_scr_t, but_clr) } | |
| 31 }; | |
| 32 | |
| 33 static int real_compute(int op, int v1, int v2) { | |
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34 int r = v1; |
| 88 | 35 |
| 36 switch(op) { | |
| 37 case '+': | |
| 38 r = v1 + v2; | |
| 39 break; | |
| 40 case '-': | |
| 41 r = v1 - v2; | |
| 42 break; | |
| 43 case '*': | |
| 44 r = v1 * v2; | |
| 45 break; | |
| 46 case '/': | |
| 93 | 47 r = v1; |
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48 if(v2) |
| 93 | 49 r /= v2; |
| 88 | 50 break; |
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51 case 'n': |
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52 r = v2; |
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53 break; |
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54 case 'N': |
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55 break; |
| 88 | 56 } |
| 57 | |
| 58 return r; | |
| 59 } | |
| 60 | |
| 94 | 61 static void show_text(calc_data_t *calc_data, int num, int saved, int op, |
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62 const char *suffix) { |
| 88 | 63 char buf[20]; |
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64 redraw_man_t *rdman; |
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65 |
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66 rdman = X_MB_rdman(calc_data->rt); |
| 88 | 67 |
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68 sprintf(buf, "%d%s", num, suffix); |
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69 sh_text_set_text(calc_data->code->screen_text_u, buf); |
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70 rdman_shape_changed(rdman, calc_data->code->screen_text_u); |
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71 |
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72 if(op == 'n') |
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73 sprintf(buf, "None"); |
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74 else |
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75 sprintf(buf, "%d%c", saved, op); |
| 94 | 76 sh_text_set_text(calc_data->code->saved_text, buf); |
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77 rdman_shape_changed(rdman, calc_data->code->saved_text); |
| 88 | 78 } |
| 79 | |
| 94 | 80 static void compute(calc_data_t *calc_data, coord_t *tgt) { |
| 88 | 81 int i; |
| 82 coord_t **coord_p; | |
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83 redraw_man_t *rdman; |
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84 static int valid_num = 0; |
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85 static int factor = 1; |
| 88 | 86 static int num = 0; |
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87 static int op = 'n'; |
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88 static int saved = 0; |
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89 char buf[2] = " "; |
| 88 | 90 |
| 91 for(i = 0; i < 16; i++) { | |
| 94 | 92 coord_p = (coord_t **)((void *)calc_data->code + tgt_list[i].off); |
| 88 | 93 if(*coord_p == (void *)tgt) |
| 94 break; | |
| 95 } | |
| 96 if(i >= 16) return; | |
| 97 | |
| 98 if(i < 10) { | |
| 99 num = num * 10 + i; | |
| 94 | 100 show_text(calc_data, num * factor, saved, op, ""); |
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101 valid_num = 1; |
| 88 | 102 } else { |
| 103 switch(tgt_list[i].c) { | |
| 104 case 'c': | |
| 105 saved = num = 0; | |
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106 factor = 1; |
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107 valid_num = 0; |
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108 op = 'n'; |
| 94 | 109 show_text(calc_data, 0, saved, op, ""); |
| 88 | 110 break; |
| 111 | |
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112 case '-': |
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113 if(!valid_num) { |
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114 factor *= -1; |
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115 valid_num = 1; |
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116 break; |
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117 } |
| 88 | 118 case '+': |
| 119 case '*': | |
| 120 case '/': | |
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121 saved = real_compute(op, saved, num * factor); |
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122 buf[0] = tgt_list[i].c; |
| 94 | 123 show_text(calc_data, saved, saved, 'n', buf); |
| 90 | 124 op = tgt_list[i].c; |
| 88 | 125 num = 0; |
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126 factor = 1; |
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127 valid_num = 0; |
| 88 | 128 break; |
| 129 | |
| 130 case '=': | |
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131 saved = real_compute(op, saved, num * factor); |
| 94 | 132 show_text(calc_data, saved, 0, 'n', ""); |
| 88 | 133 num = 0; |
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134 op = 'N'; |
| 88 | 135 break; |
| 136 } | |
| 137 } | |
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138 rdman = X_MB_rdman(calc_data->rt); |
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139 rdman_redraw_changed(rdman); |
| 88 | 140 } |
| 141 | |
| 142 static void buttons_handler(event_t *evt, void *arg) { | |
| 94 | 143 calc_data_t *calc_data = (calc_data_t *)arg; |
| 88 | 144 |
| 145 switch(evt->type) { | |
| 146 case EVT_MOUSE_BUT_PRESS: | |
| 271 | 147 compute(calc_data, (coord_t *)evt->cur_tgt->obj); |
| 88 | 148 break; |
| 149 } | |
| 150 } | |
| 151 | |
| 94 | 152 static void setup_observers(calc_data_t *calc_data) { |
| 88 | 153 calculator_scr_t *calculator_scr; |
| 154 subject_t *subject; | |
| 90 | 155 coord_t *coord; |
| 156 int off; | |
| 157 int i; | |
| 88 | 158 |
| 94 | 159 calculator_scr = calc_data->code; |
| 88 | 160 |
| 90 | 161 for(i = 0; i < 16; i++) { |
| 162 off = tgt_list[i].off; | |
| 93 | 163 coord = OFF2TYPE(calculator_scr, off, coord_t *); |
| 90 | 164 subject = coord_get_mouse_event(coord); |
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165 subject_add_observer(subject, buttons_handler, calc_data); |
| 90 | 166 } |
| 88 | 167 } |
| 168 | |
| 169 int main(int argc, char * const argv[]) { | |
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170 X_MB_runtime_t *rt; |
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171 redraw_man_t *rdman; |
| 88 | 172 calculator_scr_t *calculator_scr; |
| 94 | 173 calc_data_t calc_data; |
| 88 | 174 |
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175 rt = X_MB_new(":0.0", 300, 400); |
| 88 | 176 |
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177 rdman = X_MB_rdman(rt); |
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178 calculator_scr = calculator_scr_new(rdman, rdman->root_coord); |
| 88 | 179 |
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180 calc_data.rt = rt; |
| 94 | 181 calc_data.code = calculator_scr; |
| 182 setup_observers(&calc_data); | |
| 88 | 183 |
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184 X_MB_handle_connection(rt); |
| 88 | 185 |
| 186 calculator_scr_free(calculator_scr); | |
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187 X_MB_free(rt); |
| 88 | 188 |
| 189 return 0; | |
| 190 } |