Mercurial > MadButterfly
annotate examples/calculator/main.c @ 94:57f8fecca8f3
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| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Sun, 24 Aug 2008 08:11:16 +0800 |
| parents | c3c41f88e776 |
| children | 565b55508c8d |
| rev | line source |
|---|---|
| 88 | 1 #include <stdio.h> |
| 2 #include <mb_types.h> | |
| 3 #include <X_supp.h> | |
| 4 #include <shapes.h> | |
| 5 #include <tools.h> | |
| 6 #include "calculator_scr.h" | |
| 7 | |
| 94 | 8 typedef struct _calc_data calc_data_t; |
| 9 struct _calc_data { | |
| 88 | 10 X_MB_runtime_t *rt; |
| 11 calculator_scr_t *code; | |
| 12 }; | |
| 13 | |
| 14 static struct { | |
| 15 int c; | |
| 16 int off; | |
| 17 } tgt_list[] = { | |
| 18 { 0, OFFSET(calculator_scr_t, but_0) }, | |
| 19 { 1, OFFSET(calculator_scr_t, but_1) }, | |
| 20 { 2, OFFSET(calculator_scr_t, but_2) }, | |
| 21 { 3, OFFSET(calculator_scr_t, but_3) }, | |
| 22 { 4, OFFSET(calculator_scr_t, but_4) }, | |
| 23 { 5, OFFSET(calculator_scr_t, but_5) }, | |
| 24 { 6, OFFSET(calculator_scr_t, but_6) }, | |
| 25 { 7, OFFSET(calculator_scr_t, but_7) }, | |
| 26 { 8, OFFSET(calculator_scr_t, but_8) }, | |
| 27 { 9, OFFSET(calculator_scr_t, but_9) }, | |
| 28 { '+', OFFSET(calculator_scr_t, but_add) }, | |
| 29 { '-', OFFSET(calculator_scr_t, but_minus) }, | |
| 30 { '*', OFFSET(calculator_scr_t, but_mul) }, | |
| 31 { '/', OFFSET(calculator_scr_t, but_div) }, | |
| 32 { '=', OFFSET(calculator_scr_t, but_eq) }, | |
| 33 { 'c', OFFSET(calculator_scr_t, but_clr) } | |
| 34 }; | |
| 35 | |
| 36 static int real_compute(int op, int v1, int v2) { | |
|
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parents:
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37 int r = v1; |
| 88 | 38 |
| 39 switch(op) { | |
| 40 case '+': | |
| 41 r = v1 + v2; | |
| 42 break; | |
| 43 case '-': | |
| 44 r = v1 - v2; | |
| 45 break; | |
| 46 case '*': | |
| 47 r = v1 * v2; | |
| 48 break; | |
| 49 case '/': | |
| 93 | 50 r = v1; |
|
89
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51 if(v2) |
| 93 | 52 r /= v2; |
| 88 | 53 break; |
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parents:
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54 case 'n': |
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parents:
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55 r = v2; |
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Thinker K.F. Li <thinker@branda.to>
parents:
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56 break; |
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parents:
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57 case 'N': |
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Thinker K.F. Li <thinker@branda.to>
parents:
90
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58 break; |
| 88 | 59 } |
| 60 | |
| 61 return r; | |
| 62 } | |
| 63 | |
| 94 | 64 static void show_text(calc_data_t *calc_data, int num, int saved, int op, |
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parents:
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65 const char *suffix) { |
| 88 | 66 char buf[20]; |
| 67 | |
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parents:
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68 sprintf(buf, "%d%s", num, suffix); |
| 94 | 69 sh_text_set_text(calc_data->code->screen_text, buf); |
| 70 rdman_shape_changed(calc_data->rt->rdman, calc_data->code->screen_text); | |
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Thinker K.F. Li <thinker@branda.to>
parents:
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71 |
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Thinker K.F. Li <thinker@branda.to>
parents:
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72 if(op == 'n') |
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parents:
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73 sprintf(buf, "None"); |
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
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74 else |
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Thinker K.F. Li <thinker@branda.to>
parents:
90
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75 sprintf(buf, "%d%c", saved, op); |
| 94 | 76 sh_text_set_text(calc_data->code->saved_text, buf); |
| 77 rdman_shape_changed(calc_data->rt->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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parents:
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83 static int valid_num = 0; |
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Thinker K.F. Li <thinker@branda.to>
parents:
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84 static int factor = 1; |
| 88 | 85 static int num = 0; |
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Thinker K.F. Li <thinker@branda.to>
parents:
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86 static int op = 'n'; |
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
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87 static int saved = 0; |
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
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88 char buf[2] = " "; |
| 88 | 89 |
| 90 for(i = 0; i < 16; i++) { | |
| 94 | 91 coord_p = (coord_t **)((void *)calc_data->code + tgt_list[i].off); |
| 88 | 92 if(*coord_p == (void *)tgt) |
| 93 break; | |
| 94 } | |
| 95 if(i >= 16) return; | |
| 96 | |
| 97 if(i < 10) { | |
| 98 num = num * 10 + i; | |
| 94 | 99 show_text(calc_data, num * factor, saved, op, ""); |
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Thinker K.F. Li <thinker@branda.to>
parents:
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100 valid_num = 1; |
| 88 | 101 } else { |
| 102 switch(tgt_list[i].c) { | |
| 103 case 'c': | |
| 104 saved = num = 0; | |
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
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105 factor = 1; |
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3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
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106 valid_num = 0; |
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
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107 op = 'n'; |
| 94 | 108 show_text(calc_data, 0, saved, op, ""); |
| 88 | 109 break; |
| 110 | |
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92
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Thinker K.F. Li <thinker@branda.to>
parents:
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111 case '-': |
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Thinker K.F. Li <thinker@branda.to>
parents:
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112 if(!valid_num) { |
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3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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113 factor *= -1; |
|
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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114 valid_num = 1; |
|
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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115 break; |
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
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116 } |
| 88 | 117 case '+': |
| 118 case '*': | |
| 119 case '/': | |
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92
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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120 saved = real_compute(op, saved, num * factor); |
|
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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121 buf[0] = tgt_list[i].c; |
| 94 | 122 show_text(calc_data, saved, saved, 'n', buf); |
| 90 | 123 op = tgt_list[i].c; |
| 88 | 124 num = 0; |
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92
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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125 factor = 1; |
|
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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126 valid_num = 0; |
| 88 | 127 break; |
| 128 | |
| 129 case '=': | |
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92
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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130 saved = real_compute(op, saved, num * factor); |
| 94 | 131 show_text(calc_data, saved, 0, 'n', ""); |
| 88 | 132 num = 0; |
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92
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Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
90
diff
changeset
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133 op = 'N'; |
| 88 | 134 break; |
| 135 } | |
| 136 } | |
| 94 | 137 rdman_redraw_changed(calc_data->rt->rdman); |
| 88 | 138 } |
| 139 | |
| 140 static void buttons_handler(event_t *evt, void *arg) { | |
| 94 | 141 calc_data_t *calc_data = (calc_data_t *)arg; |
| 88 | 142 |
| 143 switch(evt->type) { | |
| 144 case EVT_MOUSE_BUT_PRESS: | |
| 94 | 145 compute(calc_data, (coord_t *)evt->cur_tgt); |
| 88 | 146 break; |
| 147 } | |
| 148 } | |
| 149 | |
| 94 | 150 static void setup_observers(calc_data_t *calc_data) { |
| 88 | 151 calculator_scr_t *calculator_scr; |
| 152 ob_factory_t *factory; | |
| 153 subject_t *subject; | |
| 90 | 154 coord_t *coord; |
| 155 int off; | |
| 156 int i; | |
| 88 | 157 |
| 94 | 158 calculator_scr = calc_data->code; |
| 159 factory = rdman_get_ob_factory(calc_data->rt->rdman); | |
| 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); |
| 94 | 165 subject_add_observer(factory, subject, buttons_handler, calc_data); |
| 90 | 166 } |
| 88 | 167 } |
| 168 | |
| 169 int main(int argc, char * const argv[]) { | |
| 170 X_MB_runtime_t rt; | |
| 171 calculator_scr_t *calculator_scr; | |
| 94 | 172 calc_data_t calc_data; |
| 88 | 173 int r; |
| 174 | |
| 175 r = X_MB_init(":0.0", 300, 400, &rt); | |
| 176 | |
| 177 calculator_scr = calculator_scr_new(rt.rdman); | |
| 178 | |
| 94 | 179 calc_data.rt = &rt; |
| 180 calc_data.code = calculator_scr; | |
| 181 setup_observers(&calc_data); | |
| 88 | 182 |
| 183 X_MB_handle_connection(&rt); | |
| 184 | |
| 185 calculator_scr_free(calculator_scr); | |
| 186 X_MB_destroy(&rt); | |
| 187 | |
| 188 return 0; | |
| 189 } |