Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 1 | #define _GNU_SOURCE |
| 2 | #include <stdio.h> |
| 3 | #undef _GNU_SOURCE |
| 4 | /* |
| 5 | * slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks |
| 6 | * the build if it isn't defined. Use the equivalent one that glibc |
| 7 | * has on features.h. |
| 8 | */ |
| 9 | #include <features.h> |
| 10 | #ifndef HAVE_LONG_LONG |
| 11 | #define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG |
| 12 | #endif |
| 13 | #include <slang.h> |
| 14 | #include <linux/list.h> |
| 15 | #include <linux/rbtree.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <sys/ttydefaults.h> |
| 18 | #include "browser.h" |
Arnaldo Carvalho de Melo | 59e8fe3 | 2010-08-10 15:44:20 -0300 | [diff] [blame] | 19 | #include "helpline.h" |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 20 | #include "../color.h" |
| 21 | #include "../util.h" |
| 22 | |
| 23 | #if SLANG_VERSION < 20104 |
| 24 | #define sltt_set_color(obj, name, fg, bg) \ |
| 25 | SLtt_set_color(obj,(char *)name, (char *)fg, (char *)bg) |
| 26 | #else |
| 27 | #define sltt_set_color SLtt_set_color |
| 28 | #endif |
| 29 | |
| 30 | newtComponent newt_form__new(void); |
| 31 | |
| 32 | int ui_browser__percent_color(double percent, bool current) |
| 33 | { |
| 34 | if (current) |
| 35 | return HE_COLORSET_SELECTED; |
| 36 | if (percent >= MIN_RED) |
| 37 | return HE_COLORSET_TOP; |
| 38 | if (percent >= MIN_GREEN) |
| 39 | return HE_COLORSET_MEDIUM; |
| 40 | return HE_COLORSET_NORMAL; |
| 41 | } |
| 42 | |
| 43 | void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence) |
| 44 | { |
| 45 | struct list_head *head = self->entries; |
| 46 | struct list_head *pos; |
| 47 | |
| 48 | switch (whence) { |
| 49 | case SEEK_SET: |
| 50 | pos = head->next; |
| 51 | break; |
| 52 | case SEEK_CUR: |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 53 | pos = self->top; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 54 | break; |
| 55 | case SEEK_END: |
| 56 | pos = head->prev; |
| 57 | break; |
| 58 | default: |
| 59 | return; |
| 60 | } |
| 61 | |
| 62 | if (offset > 0) { |
| 63 | while (offset-- != 0) |
| 64 | pos = pos->next; |
| 65 | } else { |
| 66 | while (offset++ != 0) |
| 67 | pos = pos->prev; |
| 68 | } |
| 69 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 70 | self->top = pos; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence) |
| 74 | { |
| 75 | struct rb_root *root = self->entries; |
| 76 | struct rb_node *nd; |
| 77 | |
| 78 | switch (whence) { |
| 79 | case SEEK_SET: |
| 80 | nd = rb_first(root); |
| 81 | break; |
| 82 | case SEEK_CUR: |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 83 | nd = self->top; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 84 | break; |
| 85 | case SEEK_END: |
| 86 | nd = rb_last(root); |
| 87 | break; |
| 88 | default: |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | if (offset > 0) { |
| 93 | while (offset-- != 0) |
| 94 | nd = rb_next(nd); |
| 95 | } else { |
| 96 | while (offset++ != 0) |
| 97 | nd = rb_prev(nd); |
| 98 | } |
| 99 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 100 | self->top = nd; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self) |
| 104 | { |
| 105 | struct rb_node *nd; |
| 106 | int row = 0; |
| 107 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 108 | if (self->top == NULL) |
| 109 | self->top = rb_first(self->entries); |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 110 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 111 | nd = self->top; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 112 | |
| 113 | while (nd != NULL) { |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 114 | SLsmg_gotorc(self->y + row, self->x); |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 115 | self->write(self, nd, row); |
| 116 | if (++row == self->height) |
| 117 | break; |
| 118 | nd = rb_next(nd); |
| 119 | } |
| 120 | |
| 121 | return row; |
| 122 | } |
| 123 | |
| 124 | bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row) |
| 125 | { |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 126 | return self->top_idx + row == self->index; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | void ui_browser__refresh_dimensions(struct ui_browser *self) |
| 130 | { |
| 131 | int cols, rows; |
| 132 | newtGetScreenSize(&cols, &rows); |
| 133 | |
| 134 | if (self->width > cols - 4) |
| 135 | self->width = cols - 4; |
| 136 | self->height = rows - 5; |
| 137 | if (self->height > self->nr_entries) |
| 138 | self->height = self->nr_entries; |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 139 | self->y = (rows - self->height) / 2; |
| 140 | self->x = (cols - self->width) / 2; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 141 | } |
| 142 | |
| 143 | void ui_browser__reset_index(struct ui_browser *self) |
| 144 | { |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 145 | self->index = self->top_idx = 0; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 146 | self->seek(self, 0, SEEK_SET); |
| 147 | } |
| 148 | |
Arnaldo Carvalho de Melo | 59e8fe3 | 2010-08-10 15:44:20 -0300 | [diff] [blame] | 149 | int ui_browser__show(struct ui_browser *self, const char *title, |
| 150 | const char *helpline, ...) |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 151 | { |
Arnaldo Carvalho de Melo | 59e8fe3 | 2010-08-10 15:44:20 -0300 | [diff] [blame] | 152 | va_list ap; |
| 153 | |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 154 | if (self->form != NULL) { |
| 155 | newtFormDestroy(self->form); |
| 156 | newtPopWindow(); |
| 157 | } |
| 158 | ui_browser__refresh_dimensions(self); |
| 159 | newtCenteredWindow(self->width, self->height, title); |
| 160 | self->form = newt_form__new(); |
| 161 | if (self->form == NULL) |
| 162 | return -1; |
| 163 | |
| 164 | self->sb = newtVerticalScrollbar(self->width, 0, self->height, |
| 165 | HE_COLORSET_NORMAL, |
| 166 | HE_COLORSET_SELECTED); |
| 167 | if (self->sb == NULL) |
| 168 | return -1; |
| 169 | |
| 170 | newtFormAddHotKey(self->form, NEWT_KEY_UP); |
| 171 | newtFormAddHotKey(self->form, NEWT_KEY_DOWN); |
| 172 | newtFormAddHotKey(self->form, NEWT_KEY_PGUP); |
| 173 | newtFormAddHotKey(self->form, NEWT_KEY_PGDN); |
| 174 | newtFormAddHotKey(self->form, NEWT_KEY_HOME); |
| 175 | newtFormAddHotKey(self->form, NEWT_KEY_END); |
Arnaldo Carvalho de Melo | 9e22d63 | 2010-08-10 15:09:02 -0300 | [diff] [blame] | 176 | newtFormAddHotKey(self->form, ' '); |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 177 | newtFormAddComponent(self->form, self->sb); |
Arnaldo Carvalho de Melo | 59e8fe3 | 2010-08-10 15:44:20 -0300 | [diff] [blame] | 178 | |
| 179 | va_start(ap, helpline); |
| 180 | ui_helpline__vpush(helpline, ap); |
| 181 | va_end(ap); |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 182 | return 0; |
| 183 | } |
| 184 | |
Arnaldo Carvalho de Melo | 59e8fe3 | 2010-08-10 15:44:20 -0300 | [diff] [blame] | 185 | void ui_browser__hide(struct ui_browser *self) |
| 186 | { |
| 187 | newtFormDestroy(self->form); |
| 188 | newtPopWindow(); |
| 189 | self->form = NULL; |
| 190 | ui_helpline__pop(); |
| 191 | } |
| 192 | |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 193 | int ui_browser__refresh(struct ui_browser *self) |
| 194 | { |
| 195 | int row; |
| 196 | |
| 197 | newtScrollbarSet(self->sb, self->index, self->nr_entries - 1); |
| 198 | row = self->refresh(self); |
| 199 | SLsmg_set_color(HE_COLORSET_NORMAL); |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 200 | SLsmg_fill_region(self->y + row, self->x, |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 201 | self->height - row, self->width, ' '); |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | int ui_browser__run(struct ui_browser *self, struct newtExitStruct *es) |
| 207 | { |
| 208 | if (ui_browser__refresh(self) < 0) |
| 209 | return -1; |
| 210 | |
| 211 | while (1) { |
| 212 | off_t offset; |
| 213 | |
| 214 | newtFormRun(self->form, es); |
| 215 | |
| 216 | if (es->reason != NEWT_EXIT_HOTKEY) |
| 217 | break; |
| 218 | if (is_exit_key(es->u.key)) |
| 219 | return es->u.key; |
| 220 | switch (es->u.key) { |
| 221 | case NEWT_KEY_DOWN: |
| 222 | if (self->index == self->nr_entries - 1) |
| 223 | break; |
| 224 | ++self->index; |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 225 | if (self->index == self->top_idx + self->height) { |
| 226 | ++self->top_idx; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 227 | self->seek(self, +1, SEEK_CUR); |
| 228 | } |
| 229 | break; |
| 230 | case NEWT_KEY_UP: |
| 231 | if (self->index == 0) |
| 232 | break; |
| 233 | --self->index; |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 234 | if (self->index < self->top_idx) { |
| 235 | --self->top_idx; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 236 | self->seek(self, -1, SEEK_CUR); |
| 237 | } |
| 238 | break; |
| 239 | case NEWT_KEY_PGDN: |
| 240 | case ' ': |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 241 | if (self->top_idx + self->height > self->nr_entries - 1) |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 242 | break; |
| 243 | |
| 244 | offset = self->height; |
| 245 | if (self->index + offset > self->nr_entries - 1) |
| 246 | offset = self->nr_entries - 1 - self->index; |
| 247 | self->index += offset; |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 248 | self->top_idx += offset; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 249 | self->seek(self, +offset, SEEK_CUR); |
| 250 | break; |
| 251 | case NEWT_KEY_PGUP: |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 252 | if (self->top_idx == 0) |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 253 | break; |
| 254 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 255 | if (self->top_idx < self->height) |
| 256 | offset = self->top_idx; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 257 | else |
| 258 | offset = self->height; |
| 259 | |
| 260 | self->index -= offset; |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 261 | self->top_idx -= offset; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 262 | self->seek(self, -offset, SEEK_CUR); |
| 263 | break; |
| 264 | case NEWT_KEY_HOME: |
| 265 | ui_browser__reset_index(self); |
| 266 | break; |
| 267 | case NEWT_KEY_END: |
| 268 | offset = self->height - 1; |
| 269 | if (offset >= self->nr_entries) |
| 270 | offset = self->nr_entries - 1; |
| 271 | |
| 272 | self->index = self->nr_entries - 1; |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 273 | self->top_idx = self->index - offset; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 274 | self->seek(self, -offset, SEEK_END); |
| 275 | break; |
| 276 | default: |
| 277 | return es->u.key; |
| 278 | } |
| 279 | if (ui_browser__refresh(self) < 0) |
| 280 | return -1; |
| 281 | } |
| 282 | return 0; |
| 283 | } |
| 284 | |
| 285 | unsigned int ui_browser__list_head_refresh(struct ui_browser *self) |
| 286 | { |
| 287 | struct list_head *pos; |
| 288 | struct list_head *head = self->entries; |
| 289 | int row = 0; |
| 290 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 291 | if (self->top == NULL || self->top == self->entries) |
| 292 | self->top = head->next; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 293 | |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 294 | pos = self->top; |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 295 | |
| 296 | list_for_each_from(pos, head) { |
Arnaldo Carvalho de Melo | d247eb6 | 2010-08-07 13:56:04 -0300 | [diff] [blame] | 297 | SLsmg_gotorc(self->y + row, self->x); |
Arnaldo Carvalho de Melo | ef8f34a | 2010-08-06 17:35:02 -0300 | [diff] [blame] | 298 | self->write(self, pos, row); |
| 299 | if (++row == self->height) |
| 300 | break; |
| 301 | } |
| 302 | |
| 303 | return row; |
| 304 | } |
| 305 | |
| 306 | static struct newtPercentTreeColors { |
| 307 | const char *topColorFg, *topColorBg; |
| 308 | const char *mediumColorFg, *mediumColorBg; |
| 309 | const char *normalColorFg, *normalColorBg; |
| 310 | const char *selColorFg, *selColorBg; |
| 311 | const char *codeColorFg, *codeColorBg; |
| 312 | } defaultPercentTreeColors = { |
| 313 | "red", "lightgray", |
| 314 | "green", "lightgray", |
| 315 | "black", "lightgray", |
| 316 | "lightgray", "magenta", |
| 317 | "blue", "lightgray", |
| 318 | }; |
| 319 | |
| 320 | void ui_browser__init(void) |
| 321 | { |
| 322 | struct newtPercentTreeColors *c = &defaultPercentTreeColors; |
| 323 | |
| 324 | sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg); |
| 325 | sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg); |
| 326 | sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg); |
| 327 | sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg); |
| 328 | sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg); |
| 329 | } |