Mercurial > MadButterfly
annotate examples/calculator/main.c @ 1097:52d8bf5d12b4
Implement the function to duplicate the previous scene. This require the latest inkscape-pybind, which contains duplicate() for the Node
| author | wycc |
|---|---|
| date | Sat, 04 Dec 2010 07:43:51 +0800 |
| parents | 32425882e351 |
| children | 7451af5d63ec |
| rev | line source |
|---|---|
| 88 | 1 #include <stdio.h> |
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2 #include <string.h> |
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3 #include <mb.h> |
| 88 | 4 #include "calculator_scr.h" |
| 5 | |
| 94 | 6 typedef struct _calc_data calc_data_t; |
| 7 struct _calc_data { | |
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8 mb_rt_t *rt; |
| 88 | 9 calculator_scr_t *code; |
| 10 }; | |
| 11 | |
| 12 static struct { | |
| 13 int c; | |
| 14 int off; | |
| 15 } tgt_list[] = { | |
| 16 { 0, OFFSET(calculator_scr_t, but_0) }, | |
| 17 { 1, OFFSET(calculator_scr_t, but_1) }, | |
| 18 { 2, OFFSET(calculator_scr_t, but_2) }, | |
| 19 { 3, OFFSET(calculator_scr_t, but_3) }, | |
| 20 { 4, OFFSET(calculator_scr_t, but_4) }, | |
| 21 { 5, OFFSET(calculator_scr_t, but_5) }, | |
| 22 { 6, OFFSET(calculator_scr_t, but_6) }, | |
| 23 { 7, OFFSET(calculator_scr_t, but_7) }, | |
| 24 { 8, OFFSET(calculator_scr_t, but_8) }, | |
| 25 { 9, OFFSET(calculator_scr_t, but_9) }, | |
| 26 { '+', OFFSET(calculator_scr_t, but_add) }, | |
| 27 { '-', OFFSET(calculator_scr_t, but_minus) }, | |
| 28 { '*', OFFSET(calculator_scr_t, but_mul) }, | |
| 29 { '/', OFFSET(calculator_scr_t, but_div) }, | |
| 30 { '=', OFFSET(calculator_scr_t, but_eq) }, | |
| 31 { 'c', OFFSET(calculator_scr_t, but_clr) } | |
| 32 }; | |
| 33 | |
| 34 static int real_compute(int op, int v1, int v2) { | |
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35 int r = v1; |
| 88 | 36 |
| 37 switch(op) { | |
| 38 case '+': | |
| 39 r = v1 + v2; | |
| 40 break; | |
| 41 case '-': | |
| 42 r = v1 - v2; | |
| 43 break; | |
| 44 case '*': | |
| 45 r = v1 * v2; | |
| 46 break; | |
| 47 case '/': | |
| 93 | 48 r = v1; |
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49 if(v2) |
| 93 | 50 r /= v2; |
| 88 | 51 break; |
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52 case 'n': |
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53 r = v2; |
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54 break; |
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55 case 'N': |
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56 break; |
| 88 | 57 } |
| 58 | |
| 59 return r; | |
| 60 } | |
| 61 | |
| 94 | 62 static void show_text(calc_data_t *calc_data, int num, int saved, int op, |
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63 const char *suffix) { |
| 88 | 64 char buf[20]; |
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65 redraw_man_t *rdman; |
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66 |
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67 rdman = mb_runtime_rdman(calc_data->rt); |
| 88 | 68 |
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69 sprintf(buf, "%d%s", num, suffix); |
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70 sh_stext_set_text(calc_data->code->screen_text_u, buf); |
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71 calc_data->code->screen_text_u_style_blks[0].n_chars = strlen(buf); |
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72 sh_stext_set_style(calc_data->code->screen_text_u, |
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73 calc_data->code->screen_text_u_style_blks, 1); |
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74 rdman_shape_changed(rdman, calc_data->code->screen_text_u); |
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75 |
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76 if(op == 'n') |
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77 sprintf(buf, "None"); |
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78 else |
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79 sprintf(buf, "%d%c", saved, op); |
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80 sh_stext_set_text(calc_data->code->saved_text, buf); |
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81 calc_data->code->saved_text_style_blks[0].n_chars = strlen(buf); |
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82 sh_stext_set_style(calc_data->code->saved_text, |
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83 calc_data->code->saved_text_style_blks, 1); |
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84 rdman_shape_changed(rdman, calc_data->code->saved_text); |
| 88 | 85 } |
| 86 | |
| 94 | 87 static void compute(calc_data_t *calc_data, coord_t *tgt) { |
| 88 | 88 int i; |
| 89 coord_t **coord_p; | |
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90 redraw_man_t *rdman; |
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91 static int valid_num = 0; |
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92 static int factor = 1; |
| 88 | 93 static int num = 0; |
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94 static int op = 'n'; |
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95 static int saved = 0; |
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96 char buf[2] = " "; |
| 88 | 97 |
| 98 for(i = 0; i < 16; i++) { | |
| 94 | 99 coord_p = (coord_t **)((void *)calc_data->code + tgt_list[i].off); |
| 88 | 100 if(*coord_p == (void *)tgt) |
| 101 break; | |
| 102 } | |
| 103 if(i >= 16) return; | |
| 104 | |
| 105 if(i < 10) { | |
| 106 num = num * 10 + i; | |
| 94 | 107 show_text(calc_data, num * factor, saved, op, ""); |
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108 valid_num = 1; |
| 88 | 109 } else { |
| 110 switch(tgt_list[i].c) { | |
| 111 case 'c': | |
| 112 saved = num = 0; | |
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113 factor = 1; |
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114 valid_num = 0; |
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115 op = 'n'; |
| 94 | 116 show_text(calc_data, 0, saved, op, ""); |
| 88 | 117 break; |
| 118 | |
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119 case '-': |
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120 if(!valid_num) { |
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121 factor *= -1; |
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122 valid_num = 1; |
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123 break; |
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124 } |
| 88 | 125 case '+': |
| 126 case '*': | |
| 127 case '/': | |
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128 saved = real_compute(op, saved, num * factor); |
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129 buf[0] = tgt_list[i].c; |
| 94 | 130 show_text(calc_data, saved, saved, 'n', buf); |
| 90 | 131 op = tgt_list[i].c; |
| 88 | 132 num = 0; |
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133 factor = 1; |
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134 valid_num = 0; |
| 88 | 135 break; |
| 136 | |
| 137 case '=': | |
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138 saved = real_compute(op, saved, num * factor); |
| 94 | 139 show_text(calc_data, saved, 0, 'n', ""); |
| 88 | 140 num = 0; |
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141 op = 'N'; |
| 88 | 142 break; |
| 143 } | |
| 144 } | |
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145 rdman = mb_runtime_rdman(calc_data->rt); |
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146 rdman_redraw_changed(rdman); |
| 88 | 147 } |
| 148 | |
| 149 static void buttons_handler(event_t *evt, void *arg) { | |
| 94 | 150 calc_data_t *calc_data = (calc_data_t *)arg; |
| 88 | 151 |
| 152 switch(evt->type) { | |
| 153 case EVT_MOUSE_BUT_PRESS: | |
| 271 | 154 compute(calc_data, (coord_t *)evt->cur_tgt->obj); |
| 88 | 155 break; |
| 156 } | |
| 157 } | |
| 158 | |
| 94 | 159 static void setup_observers(calc_data_t *calc_data) { |
| 88 | 160 calculator_scr_t *calculator_scr; |
| 161 subject_t *subject; | |
| 90 | 162 coord_t *coord; |
| 163 int off; | |
| 164 int i; | |
| 88 | 165 |
| 94 | 166 calculator_scr = calc_data->code; |
| 88 | 167 |
| 90 | 168 for(i = 0; i < 16; i++) { |
| 169 off = tgt_list[i].off; | |
| 93 | 170 coord = OFF2TYPE(calculator_scr, off, coord_t *); |
| 90 | 171 subject = coord_get_mouse_event(coord); |
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172 subject_add_observer(subject, buttons_handler, calc_data); |
| 90 | 173 } |
| 88 | 174 } |
| 175 | |
| 176 int main(int argc, char * const argv[]) { | |
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177 mb_rt_t *rt; |
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178 redraw_man_t *rdman; |
| 88 | 179 calculator_scr_t *calculator_scr; |
| 94 | 180 calc_data_t calc_data; |
| 88 | 181 |
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182 rt = mb_runtime_new(":0.0", 300, 400); |
| 88 | 183 |
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184 rdman = mb_runtime_rdman(rt); |
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185 calculator_scr = calculator_scr_new(rdman, rdman->root_coord); |
| 88 | 186 |
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187 calc_data.rt = rt; |
| 94 | 188 calc_data.code = calculator_scr; |
| 189 setup_observers(&calc_data); | |
| 88 | 190 |
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191 mb_runtime_event_loop(rt); |
| 88 | 192 |
| 193 calculator_scr_free(calculator_scr); | |
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194 mb_runtime_free(rt); |
| 88 | 195 |
| 196 return 0; | |
| 197 } |