Mercurial > MadButterfly
annotate examples/calculator/main.c @ 880:ac3e8492ad74 abs_n_rel_center
Formalize path data for MadButterfly.
Inkscape and other editors would omit 'l' or 'L' after 'm' or 'M'.
MadButterfly can not handle it, now. So, we work around it at SVG
parser.
| author | Thinker K.F. Li <thinker@codemud.net> |
|---|---|
| date | Sat, 25 Sep 2010 18:46:37 +0800 |
| parents | 331467b8e778 |
| children | 32425882e351 |
| 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 { | |
| 88 | 8 X_MB_runtime_t *rt; |
| 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 = X_MB_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 = X_MB_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 X_MB_runtime_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 = X_MB_new(":0.0", 300, 400); |
| 88 | 183 |
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184 rdman = X_MB_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 X_MB_handle_connection(rt); |
| 88 | 192 |
| 193 calculator_scr_free(calculator_scr); | |
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194 X_MB_free(rt); |
| 88 | 195 |
| 196 return 0; | |
| 197 } |