apps/gui/option_select.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Kevin Ferrare
  11  * Copyright (C) 2007 by Jonathan Gordon
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22 #include <stdlib.h>
  23 #include "string-extra.h"
  24 #include "config.h"
  25 #include "option_select.h"
  26 #include "kernel.h"
  27 #include "lang.h"
  28 #include "talk.h"
  29 #include "settings_list.h"
  30 #include "sound.h"
  31 #include "list.h"
  32 #include "action.h"
  33 #include "misc.h"
  34 #include "splash.h"
  35 #include "menu.h"
  36 #include "quickscreen.h"
  37
  38
  39 static int selection_to_val(const struct settings_list *setting, int selection);
  40 int option_value_as_int(const struct settings_list *setting)
  41 {
  42     int type = (setting->flags & F_T_MASK);
  43     int temp = 0;
  44     if (type == F_T_BOOL)
  45         temp = *(bool*)setting->setting?1:0;
  46     else if (type == F_T_UINT || type == F_T_INT)
  47         temp = *(int*)setting->setting;
  48     return temp;
  49 }
  50 static const char *unit_strings[] =
  51 {
  52     [UNIT_INT] = "",    [UNIT_MS]  = "ms",
  53     [UNIT_SEC] = "s",   [UNIT_MIN] = "min",
  54     [UNIT_HOUR]= "hr",  [UNIT_KHZ] = "kHz",
  55     [UNIT_DB]  = "dB",  [UNIT_PERCENT] = "%",
  56     [UNIT_MAH] = "mAh", [UNIT_PIXEL] = "px",
  57     [UNIT_PER_SEC] = "per sec",
  58     [UNIT_HERTZ] = "Hz",
  59     [UNIT_MB]  = "MB",  [UNIT_KBIT]  = "kb/s",
  60     [UNIT_PM_TICK] = "units/10ms",
  61 };
  62 /* these two vars are needed so arbitrary values can be added to the
  63    TABLE_SETTING settings if the F_ALLOW_ARBITRARY_VALS flag is set */
  64 static int table_setting_oldval = 0, table_setting_array_position = 0;
  65 const char *option_get_valuestring(const struct settings_list *setting,
  66                                    char *buffer, int buf_len,
  67                                    intptr_t temp_var)
  68 {
  69     const char* str = buffer;
  70     if ((setting->flags & F_BOOL_SETTING) == F_BOOL_SETTING)
  71     {
  72         bool val = (bool)temp_var;
  73         strlcpy(buffer, str(val? setting->bool_setting->lang_yes :
  74                                  setting->bool_setting->lang_no), buf_len);
  75     }
  76 #if 0 /* probably dont need this one */
  77     else if ((setting->flags & F_FILENAME) == F_FILENAME)
  78     {
  79         struct filename_setting *info = setting->filename_setting;
  80         snprintf(buffer, buf_len, "%s%s%s", info->prefix,
  81                  (char*)temp_var, info->suffix);
  82     }
  83 #endif
  84     else if (((setting->flags & F_INT_SETTING) == F_INT_SETTING) ||
  85              ((setting->flags & F_TABLE_SETTING) == F_TABLE_SETTING))
  86     {
  87         const struct int_setting *int_info = setting->int_setting;
  88         const struct table_setting *tbl_info = setting->table_setting;
  89         const char *unit;
  90         const char* (*formatter)(char*, size_t, int, const char*);
  91         if ((setting->flags & F_INT_SETTING) == F_INT_SETTING)
  92         {
  93             formatter = int_info->formatter;
  94             unit = unit_strings[int_info->unit];
  95         }
  96         else
  97         {
  98             formatter = tbl_info->formatter;
  99             unit = unit_strings[tbl_info->unit];
 100         }
 101         if (formatter)
 102             str = formatter(buffer, buf_len, (int)temp_var, unit);
 103         else
 104             snprintf(buffer, buf_len, "%d %s", (int)temp_var, unit?unit:"");
 105     }
 106     else if ((setting->flags & F_T_SOUND) == F_T_SOUND)
 107     {
 108         char sign = ' ';
 109         const char *unit = sound_unit(setting->sound_setting->setting);
 110         int val = sound_val2phys(setting->sound_setting->setting, (int)temp_var);
 111         if (sound_numdecimals(setting->sound_setting->setting))
 112         {
 113             int integer, dec;
 114             if(val < 0)
 115             {
 116                 sign = '-';
 117                 val = abs(val);
 118             }
 119             integer = val / 10;
 120             dec = val % 10;
 121             snprintf(buffer, buf_len, "%c%d.%d %s", sign, integer, dec, unit);
 122         }
 123         else
 124             snprintf(buffer, buf_len, "%d %s", val, unit);
 125     }
 126     else if ((setting->flags & F_CHOICE_SETTING) == F_CHOICE_SETTING)
 127     {
 128         if (setting->flags & F_CHOICETALKS)
 129         {
 130             int setting_id;
 131             const struct choice_setting *info = setting->choice_setting;
 132             if (info->talks[(int)temp_var] < LANG_LAST_INDEX_IN_ARRAY)
 133             {
 134                 strlcpy(buffer, str(info->talks[(int)temp_var]), buf_len);
 135             }
 136             else
 137             {
 138                 find_setting(setting->setting, &setting_id);
 139                 cfg_int_to_string(setting_id, (int)temp_var, buffer, buf_len);
 140             }
 141         }
 142         else
 143         {
 144             int value = (int)temp_var;
 145             char *val = P2STR(setting->choice_setting->desc[value]);
 146             strlcpy(buffer, val, buf_len);
 147         }
 148     }
 149     return str;
 150 }
 151 void option_talk_value(const struct settings_list *setting, int value, bool enqueue)
 152 {
 153     if ((setting->flags & F_BOOL_SETTING) == F_BOOL_SETTING)
 154     {
 155         bool val = (value==1);
 156         talk_id(val? setting->bool_setting->lang_yes :
 157                 setting->bool_setting->lang_no, enqueue);
 158     }
 159 #if 0 /* probably dont need this one */
 160     else if ((setting->flags & F_FILENAME) == F_FILENAME)
 161     {
 162 }
 163 #endif
 164     else if (((setting->flags & F_INT_SETTING) == F_INT_SETTING) ||
 165                ((setting->flags & F_TABLE_SETTING) == F_TABLE_SETTING))
 166     {
 167         const struct int_setting *int_info = setting->int_setting;
 168         const struct table_setting *tbl_info = setting->table_setting;
 169         int unit;
 170         int32_t (*get_talk_id)(int, int);
 171         if ((setting->flags & F_INT_SETTING) == F_INT_SETTING)
 172         {
 173             unit = int_info->unit;
 174             get_talk_id = int_info->get_talk_id;
 175         }
 176         else
 177         {
 178             unit = tbl_info->unit;
 179             get_talk_id = tbl_info->get_talk_id;
 180         }
 181         if (get_talk_id)
 182             talk_id(get_talk_id(value, unit), enqueue);
 183         else
 184             talk_value(value, unit, enqueue);
 185     }
 186     else if ((setting->flags & F_T_SOUND) == F_T_SOUND)
 187     {
 188         int talkunit = UNIT_INT;
 189         int sound_setting = setting->sound_setting->setting;
 190         const char *unit = sound_unit(sound_setting);
 191         int decimals = sound_numdecimals(sound_setting);
 192         int phys = sound_val2phys(sound_setting, value);
 193         if (!strcmp(unit, "dB"))
 194             talkunit = UNIT_DB;
 195         else if (!strcmp(unit, "%"))
 196             talkunit = UNIT_PERCENT;
 197         else if (!strcmp(unit, "Hz"))
 198             talkunit = UNIT_HERTZ;
 199         talk_value_decimal(phys, talkunit, decimals, false);
 200     }
 201     else if ((setting->flags & F_CHOICE_SETTING) == F_CHOICE_SETTING)
 202     {
 203         if (setting->flags & F_CHOICETALKS)
 204         {
 205             talk_id(setting->choice_setting->talks[value], enqueue);
 206         }
 207         else
 208         {
 209             talk_id(P2ID(setting->choice_setting->desc[value]), enqueue);
 210         }
 211     }
 212 }
 213
 214 static int option_talk(int selected_item, void * data)
 215 {
 216     struct settings_list *setting = (struct settings_list *)data;
 217     int temp_var = selection_to_val(setting, selected_item);
 218     option_talk_value(setting, temp_var, false);
 219     return 0;
 220 }
 221
 222 #if defined(HAVE_QUICKSCREEN) || defined(HAVE_RECORDING) || defined(HAVE_TOUCHSCREEN)
 223    /* only the quickscreen and recording trigger needs this */
 224 void option_select_next_val(const struct settings_list *setting,
 225                             bool previous, bool apply)
 226 {
 227     int val = 0;
 228     int *value = setting->setting;
 229     if ((setting->flags & F_BOOL_SETTING) == F_BOOL_SETTING)
 230     {
 231         *(bool*)value = !*(bool*)value;
 232         if (apply && setting->bool_setting->option_callback)
 233             setting->bool_setting->option_callback(*(bool*)value);
 234         return;
 235     }
 236     else if ((setting->flags & F_INT_SETTING) == F_INT_SETTING)
 237     {
 238         struct int_setting *info = (struct int_setting *)setting->int_setting;
 239         bool neg_step = (info->step < 0);
 240         if (!previous)
 241         {
 242             val = *value + info->step;
 243             if (neg_step ? (val < info->max) : (val > info->max))
 244                 val = info->min;
 245         }
 246         else
 247         {
 248             val = *value - info->step;
 249             if (neg_step ? (val > info->min) : (val < info->min))
 250                 val = info->max;
 251         }
 252         *value = val;
 253         if (apply && info->option_callback)
 254             info->option_callback(val);
 255     }
 256     else if ((setting->flags & F_T_SOUND) == F_T_SOUND)
 257     {
 258         int setting_id = setting->sound_setting->setting;
 259         int steps = sound_steps(setting_id);
 260         int min = sound_min(setting_id);
 261         int max = sound_max(setting_id);
 262         if (!previous)
 263         {
 264             val = *value + steps;
 265             if (val >= max)
 266                 val = min;
 267         }
 268         else
 269         {
 270             val = *value - steps;
 271             if (val < min)
 272                 val = max;
 273         }
 274         *value = val;
 275         if (apply)
 276             sound_set(setting_id, val);
 277     }
 278     else if ((setting->flags & F_CHOICE_SETTING) == F_CHOICE_SETTING)
 279     {
 280         struct choice_setting *info = (struct choice_setting *)setting->choice_setting;
 281         if (!previous)
 282         {
 283             val = *value + 1;
 284             if (val >= info->count)
 285                 val = 0;
 286         }
 287         else
 288         {
 289             val = *value - 1;
 290             if (val < 0)
 291                 val = info->count-1;
 292         }
 293         *value = val;
 294         if (apply && info->option_callback)
 295             info->option_callback(val);
 296     }
 297     else if ((setting->flags & F_TABLE_SETTING) == F_TABLE_SETTING)
 298     {
 299         const struct table_setting *tbl_info = setting->table_setting;
 300         int i, add;
 301         add = previous?tbl_info->count-1:1;
 302         for (i=0; i<tbl_info->count;i++)
 303         {
 304             if ((*value == tbl_info->values[i]) ||
 305                   (settings->flags&F_ALLOW_ARBITRARY_VALS &&
 306                     *value < tbl_info->values[i]))
 307             {
 308                 val = tbl_info->values[(i+add)%tbl_info->count];
 309                 break;
 310             }
 311         }
 312         *value = val;
 313         if (apply && tbl_info->option_callback)
 314             tbl_info->option_callback(val);
 315     }
 316 }
 317 #endif
 318
 319 static int selection_to_val(const struct settings_list *setting, int selection)
 320 {
 321     /* rockbox: comment 'set but unused' variables
 322     int min = 0;
 323     */
 324     int max = 0, step = 1;
 325     if (((setting->flags & F_BOOL_SETTING) == F_BOOL_SETTING) ||
 326           ((setting->flags & F_CHOICE_SETTING) == F_CHOICE_SETTING))
 327         return selection;
 328     else if ((setting->flags & F_TABLE_SETTING) == F_TABLE_SETTING)
 329     {
 330         const struct table_setting *info = setting->table_setting;
 331         if (setting->flags&F_ALLOW_ARBITRARY_VALS &&
 332             table_setting_array_position != -1    &&
 333             (selection >= table_setting_array_position))
 334         {
 335             if (selection == table_setting_array_position)
 336                 return table_setting_oldval;
 337             return info->values[selection-1];
 338         }
 339         else
 340             return info->values[selection];
 341     }
 342     else if ((setting->flags & F_T_SOUND) == F_T_SOUND)
 343     {
 344         int setting_id = setting->sound_setting->setting;
 345 #ifndef ASCENDING_INT_SETTINGS
 346         step = sound_steps(setting_id);
 347         max = sound_max(setting_id);
 348         /* min = sound_min(setting_id); */
 349 #else
 350         step = -sound_steps(setting_id);
 351         /* min = sound_max(setting_id); */
 352         max = sound_min(setting_id);
 353 #endif
 354     }
 355     else if ((setting->flags & F_INT_SETTING) == F_INT_SETTING)
 356     {
 357         const struct int_setting *info = setting->int_setting;
 358 #ifndef ASCENDING_INT_SETTINGS
 359         /* min = info->min; */
 360         max = info->max;
 361         step = info->step;
 362 #else
 363         max = info->min;
 364         /* min = info->max; */
 365         step = -info->step;
 366 #endif
 367     }
 368     return max- (selection * step);
 369 }
 370
 371 static const char * value_setting_get_name_cb(int selected_item,
 372                                               void * data,
 373                                               char *buffer,
 374                                               size_t buffer_len)
 375 {
 376     selected_item = selection_to_val(data, selected_item);
 377     return option_get_valuestring(data, buffer, buffer_len, selected_item);
 378 }
 379
 380 /* wrapper to convert from int param to bool param in option_screen */
 381 static void (*boolfunction)(bool);
 382 static void bool_funcwrapper(int value)
 383 {
 384     if (value)
 385         boolfunction(true);
 386     else
 387         boolfunction(false);
 388 }
 389
 390 static void val_to_selection(const struct settings_list *setting, int oldvalue,
 391                              int *nb_items, int *selected,
 392                              void (**function)(int))
 393 {
 394     int var_type = setting->flags&F_T_MASK;
 395     /* set the number of items and current selection */
 396     if (var_type == F_T_INT || var_type == F_T_UINT)
 397     {
 398         if (setting->flags&F_CHOICE_SETTING)
 399         {
 400             *nb_items = setting->choice_setting->count;
 401             *selected = oldvalue;
 402             *function = setting->choice_setting->option_callback;
 403         }
 404         else if (setting->flags&F_TABLE_SETTING)
 405         {
 406             const struct table_setting *info = setting->table_setting;
 407             int i;
 408             *nb_items = info->count;
 409             *selected = -1;
 410             table_setting_array_position = -1;
 411             for (i=0;*selected==-1 && i<*nb_items;i++)
 412             {
 413                 if (setting->flags&F_ALLOW_ARBITRARY_VALS &&
 414                     (oldvalue < info->values[i]))
 415                 {
 416                     table_setting_oldval = oldvalue;
 417                     table_setting_array_position = i;
 418                     *selected = i;
 419                     (*nb_items)++;
 420                 }
 421                 else if (oldvalue == info->values[i])
 422                     *selected = i;
 423             }
 424             *function = info->option_callback;
 425         }
 426         else if (setting->flags&F_T_SOUND)
 427         {
 428             int setting_id = setting->sound_setting->setting;
 429             int steps = sound_steps(setting_id);
 430             int min = sound_min(setting_id);
 431             int max = sound_max(setting_id);
 432             *nb_items = (max-min)/steps + 1;
 433 #ifndef ASCENDING_INT_SETTINGS
 434             *selected = (max - oldvalue) / steps;
 435 #else
 436             *selected = (oldvalue - min) / steps;
 437 #endif
 438             *function = sound_get_fn(setting_id);
 439         }
 440         else
 441         {
 442             const struct int_setting *info = setting->int_setting;
 443             int min, max, step;
 444             max = info->max;
 445             min = info->min;
 446             step = info->step;
 447             *nb_items = (max-min)/step + 1;
 448 #ifndef ASCENDING_INT_SETTINGS
 449             *selected = (max - oldvalue) / step;
 450 #else
 451             *selected = (oldvalue - min) / step;
 452 #endif
 453             *function = info->option_callback;
 454         }
 455     }
 456     else if (var_type == F_T_BOOL)
 457     {
 458         *selected = oldvalue;
 459         *nb_items = 2;
 460         boolfunction = setting->bool_setting->option_callback;
 461         if (boolfunction)
 462             *function = bool_funcwrapper;
 463     }
 464 }
 465
 466 bool option_screen(const struct settings_list *setting,
 467                    struct viewport parent[NB_SCREENS],
 468                    bool use_temp_var, unsigned char* option_title)
 469 {
 470     int action;
 471     bool done = false;
 472     struct gui_synclist lists;
 473     int oldvalue, nb_items = 0, selected = 0, temp_var;
 474     int *variable;
 475     bool allow_wrap = setting->flags & F_NO_WRAP ? false : true;
 476     int var_type = setting->flags&F_T_MASK;
 477     void (*function)(int) = NULL;
 478     char *title;
 479     if (var_type == F_T_INT || var_type == F_T_UINT)
 480     {
 481         variable = use_temp_var ? &temp_var: (int*)setting->setting;
 482         temp_var = oldvalue = *(int*)setting->setting;
 483     }
 484     else if (var_type == F_T_BOOL)
 485     {
 486         /* bools always use the temp variable...
 487         if use_temp_var is false it will be copied to setting->setting every change */
 488         variable = &temp_var;
 489         temp_var = oldvalue = *(bool*)setting->setting?1:0;
 490     }
 491     else return false; /* only int/bools can go here */
 492     push_current_activity(ACTIVITY_OPTIONSELECT);
 493     gui_synclist_init(&lists, value_setting_get_name_cb,
 494                       (void*)setting, false, 1, parent);
 495     if (setting->lang_id == -1)
 496         title = (char*)setting->cfg_vals;
 497     else
 498         title = P2STR(option_title);
 499
 500     gui_synclist_set_title(&lists, title, Icon_Questionmark);
 501     gui_synclist_set_icon_callback(&lists, NULL);
 502     if(global_settings.talk_menu)
 503         gui_synclist_set_voice_callback(&lists, option_talk);
 504
 505     val_to_selection(setting, oldvalue, &nb_items, &selected, &function);
 506     gui_synclist_set_nb_items(&lists, nb_items);
 507     gui_synclist_select_item(&lists, selected);
 508
 509     gui_synclist_limit_scroll(&lists, true);
 510     gui_synclist_draw(&lists);
 511     /* talk the item */
 512     gui_synclist_speak_item(&lists);
 513     while (!done)
 514     {
 515         if (list_do_action(CONTEXT_LIST, HZ, /* HZ so the status bar redraws */
 516                            &lists, &action,
 517             allow_wrap? LIST_WRAP_UNLESS_HELD: LIST_WRAP_OFF))
 518         {
 519             /* setting changed */
 520             selected = gui_synclist_get_sel_pos(&lists);
 521             *variable = selection_to_val(setting, selected);
 522             if (var_type == F_T_BOOL && !use_temp_var)
 523                 *(bool*)setting->setting = (*variable==1);
 524         }
 525         else if (action == ACTION_NONE)
 526             continue;
 527         else if (action == ACTION_STD_CANCEL)
 528         {
 529             /* setting canceled, restore old value if changed */
 530             if (*variable != oldvalue)
 531             {
 532                 *variable = oldvalue;
 533                 if (var_type == F_T_BOOL && !use_temp_var)
 534                     *(bool*)setting->setting = (oldvalue==1);
 535                 splash(HZ/2, ID2P(LANG_CANCEL));
 536             }
 537             done = true;
 538         }
 539         else if (action == ACTION_STD_CONTEXT)
 540         {
 541             /* reset setting to default */
 542             reset_setting(setting, variable);
 543             if (var_type == F_T_BOOL && !use_temp_var)
 544                 *(bool*)setting->setting = (*variable==1);
 545             val_to_selection(setting, *variable, &nb_items,
 546                                 &selected, &function);
 547             gui_synclist_select_item(&lists, selected);
 548             gui_synclist_draw(&lists);
 549             gui_synclist_speak_item(&lists);
 550         }
 551         else if (action == ACTION_STD_OK)
 552         {
 553             /* setting accepted, store now if it used a temp var */
 554             if (use_temp_var)
 555             {
 556                 if (var_type == F_T_INT || var_type == F_T_UINT)
 557                     *(int*)setting->setting = *variable;
 558                 else
 559                     *(bool*)setting->setting = (*variable==1);
 560             }
 561             settings_save();
 562             done = true;
 563         }
 564         else if(default_event_handler(action) == SYS_USB_CONNECTED)
 565             return true;
 566         /* callback */
 567         if ( function )
 568             function(*variable);
 569         /* if the volume is changing we need to let the skins know */
 570         if (function == sound_get_fn(SOUND_VOLUME))
 571             global_status.last_volume_change = current_tick;
 572     }
 573     pop_current_activity();
 574     return false;
 575 }
 576