apps/gui/quickscreen.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Jonathan Gordon
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22
  23 #include <stdio.h>
  24 #include "config.h"
  25 #include "system.h"
  26 #include "icons.h"
  27 #include "font.h"
  28 #include "kernel.h"
  29 #include "misc.h"
  30 #include "action.h"
  31 #include "settings_list.h"
  32 #include "lang.h"
  33 #include "playlist.h"
  34 #include "dsp.h"
  35 #include "viewport.h"
  36 #include "audio.h"
  37 #include "quickscreen.h"
  38 #include "talk.h"
  39 #include "list.h"
  40 #include "option_select.h"
  41
  42 static struct viewport vps[NB_SCREENS][QUICKSCREEN_ITEM_COUNT];
  43 static struct viewport vp_icons[NB_SCREENS];
  44 /* vp_icons will be used like this:
  45    the side icons will be aligned to the top of this vp and to their sides
  46    the bottom icon will be aligned center and at the bottom of this vp */
  47
  48 #define MIN_LINES 4
  49 #define MAX_NEEDED_LINES 8
  50 #define CENTER_MARGIN 10 /* pixels between the 2 center items minimum */
  51 #define CENTER_ICONAREA_WIDTH (CENTER_MARGIN+8*2)
  52
  53 static void quickscreen_fix_viewports(struct gui_quickscreen *qs,
  54                                       struct screen *display,
  55                                       struct viewport *parent)
  56 {
  57 #ifdef HAVE_REMOTE_LCD
  58     int screen = display->screen_type;
  59 #else
  60     const int screen = 0;
  61 #endif
  62
  63     int char_height, i, width, pad = 0;
  64     int left_width, right_width, bottom_lines = 2;
  65     unsigned char *s;
  66     int nb_lines = viewport_get_nb_lines(parent);
  67
  68     /* nb_lines only returns the number of fully visible lines, small screens
  69         or really large fonts could cause problems with the calculation below.
  70      */
  71     if(nb_lines==0)
  72         nb_lines++;
  73
  74     char_height = parent->height/nb_lines;
  75
  76     /* center the icons VP first */
  77     vp_icons[screen] = *parent;
  78     vp_icons[screen].width = CENTER_ICONAREA_WIDTH; /* absolute smallest allowed */
  79     vp_icons[screen].x = parent->x + (parent->width / 2 - CENTER_ICONAREA_WIDTH / 2);
  80
  81     vps[screen][QUICKSCREEN_BOTTOM] = *parent;
  82     if (nb_lines <= MIN_LINES) /* make the bottom item use 1 line */
  83         bottom_lines = 1;
  84     else
  85         bottom_lines = 2;
  86     vps[screen][QUICKSCREEN_BOTTOM].height = bottom_lines*char_height;
  87     vps[screen][QUICKSCREEN_BOTTOM].y =
  88                     parent->y + parent->height - bottom_lines*char_height;
  89     if (nb_lines >= MAX_NEEDED_LINES)
  90     {
  91         vps[screen][QUICKSCREEN_BOTTOM].y -= char_height;
  92     }
  93
  94     /* adjust the left/right items widths to fit the screen nicely */
  95     s = P2STR(ID2P(qs->items[QUICKSCREEN_LEFT]->lang_id));
  96     left_width = display->getstringsize(s, NULL, NULL);
  97     s = P2STR(ID2P(qs->items[QUICKSCREEN_RIGHT]->lang_id));
  98     right_width = display->getstringsize(s, NULL, NULL);
  99     nb_lines -= bottom_lines;
 100
 101     width = MAX(left_width, right_width);
 102     if (width*2 + vp_icons[screen].width > display->lcdwidth)
 103         width = (display->lcdwidth - vp_icons[screen].width)/2;
 104     else /* add more gap in icons vp */
 105     {
 106         int excess = display->lcdwidth - vp_icons[screen].width - width*2;
 107         if (excess > CENTER_MARGIN*4)
 108         {
 109             pad = CENTER_MARGIN;
 110             excess -= CENTER_MARGIN*2;
 111         }
 112         vp_icons[screen].x -= excess/2;
 113         vp_icons[screen].width += excess;
 114     }
 115     vps[screen][QUICKSCREEN_LEFT] = *parent;
 116     vps[screen][QUICKSCREEN_LEFT].x = parent->x + pad;
 117     vps[screen][QUICKSCREEN_LEFT].width = width;
 118
 119     vps[screen][QUICKSCREEN_RIGHT] = *parent;
 120     vps[screen][QUICKSCREEN_RIGHT].x = parent->x + parent->width - width - pad;
 121     vps[screen][QUICKSCREEN_RIGHT].width = width;
 122
 123     /* shrink the icons vp by a few pixels if there is room so the arrows
 124        aren't drawn right next to the text */
 125     if (vp_icons[screen].width > CENTER_ICONAREA_WIDTH+8)
 126     {
 127         vp_icons[screen].width -= 8;
 128         vp_icons[screen].x += 4;
 129     }
 130
 131
 132     if (nb_lines <= MIN_LINES)
 133         i = 0;
 134     else
 135         i = nb_lines/2;
 136     vps[screen][QUICKSCREEN_LEFT].y = parent->y + (i*char_height);
 137     vps[screen][QUICKSCREEN_RIGHT].y = parent->y + (i*char_height);
 138     if (nb_lines >= 3)
 139         i = 3*char_height;
 140     else
 141         i = nb_lines*char_height;
 142
 143     vps[screen][QUICKSCREEN_LEFT].height = i;
 144     vps[screen][QUICKSCREEN_RIGHT].height = i;
 145     vp_icons[screen].y = vps[screen][QUICKSCREEN_LEFT].y + (char_height/2);
 146     vp_icons[screen].height =
 147                 vps[screen][QUICKSCREEN_BOTTOM].y - vp_icons[screen].y;
 148 }
 149
 150 static void quickscreen_draw_text(const char *s, int item, bool title,
 151                                   struct screen *display, struct viewport *vp)
 152 {
 153     int nb_lines = viewport_get_nb_lines(vp);
 154     int w, h, line = 0, x = 0;
 155     display->getstringsize(s, &w, &h);
 156
 157     if (nb_lines > 1 && !title)
 158         line = 1;
 159     switch (item)
 160     {
 161         case QUICKSCREEN_BOTTOM:
 162             x = (vp->width - w)/2;
 163             break;
 164         case QUICKSCREEN_LEFT:
 165             x = 0;
 166             break;
 167         case QUICKSCREEN_RIGHT:
 168             x = vp->width - w;
 169             break;
 170     }
 171     if (w>vp->width)
 172         display->puts_scroll(0, line, s);
 173     else
 174         display->putsxy(x, line*h, s);
 175 }
 176
 177 static void gui_quickscreen_draw(struct gui_quickscreen *qs,
 178                                  struct screen *display,
 179                                  struct viewport *parent)
 180 {
 181 #ifdef HAVE_REMOTE_LCD
 182     int screen = display->screen_type;
 183 #else
 184     const int screen = 0;
 185 #endif
 186
 187     int i;
 188     char buf[MAX_PATH];
 189     unsigned const char *title, *value;
 190     void *setting;
 191     int temp;
 192     display->set_viewport(parent);
 193     display->clear_viewport();
 194     for (i=0; i<QUICKSCREEN_ITEM_COUNT; i++)
 195     {
 196         if (!qs->items[i])
 197             continue;
 198         display->set_viewport(&vps[screen][i]);
 199         display->scroll_stop(&vps[screen][i]);
 200
 201         title = P2STR(ID2P(qs->items[i]->lang_id));
 202         setting = qs->items[i]->setting;
 203         temp = option_value_as_int(qs->items[i]);
 204         value = option_get_valuestring((struct settings_list*)qs->items[i],
 205                                        buf, MAX_PATH, temp);
 206
 207         if (vps[screen][i].height < display->getcharheight()*2)
 208         {
 209             char text[MAX_PATH];
 210             snprintf(text, MAX_PATH, "%s: %s", title, value);
 211             quickscreen_draw_text(text, i, true, display, &vps[screen][i]);
 212         }
 213         else
 214         {
 215             quickscreen_draw_text(title, i, true, display, &vps[screen][i]);
 216             quickscreen_draw_text(value, i, false, display, &vps[screen][i]);
 217         }
 218         display->update_viewport();
 219     }
 220     /* draw the icons */
 221     display->set_viewport(&vp_icons[screen]);
 222     display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
 223                          vp_icons[screen].width - 8, 0, 7, 8);
 224     display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward], 0, 0, 7, 8);
 225     display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow],
 226                          (vp_icons[screen].width/2) - 4,
 227                           vp_icons[screen].height - 7, 7, 8);
 228     display->update_viewport();
 229
 230     display->set_viewport(parent);
 231     display->update_viewport();
 232     display->set_viewport(NULL);
 233 }
 234
 235 static void talk_qs_option(struct settings_list *opt, bool enqueue)
 236 {
 237     if (global_settings.talk_menu) {
 238         if(!enqueue)
 239             talk_shutup();
 240         talk_id(opt->lang_id, true);
 241         option_talk_value(opt, option_value_as_int(opt), true);
 242     }
 243 }
 244
 245 /*
 246  * Does the actions associated to the given button if any
 247  *  - qs : the quickscreen
 248  *  - button : the key we are going to analyse
 249  * returns : true if the button corresponded to an action, false otherwise
 250  */
 251 static bool gui_quickscreen_do_button(struct gui_quickscreen * qs, int button)
 252 {
 253     int item;
 254     bool invert = false;
 255     switch(button)
 256     {
 257         case ACTION_QS_LEFT:
 258             item = QUICKSCREEN_LEFT;
 259             break;
 260
 261         case ACTION_QS_DOWNINV:
 262             invert = true;      /* fallthrough */
 263         case ACTION_QS_DOWN:
 264             item = QUICKSCREEN_BOTTOM;
 265             break;
 266
 267         case ACTION_QS_RIGHT:
 268             item = QUICKSCREEN_RIGHT;
 269             break;
 270
 271         default:
 272             return false;
 273     }
 274     option_select_next_val((struct settings_list *)qs->items[item], invert, true);
 275     talk_qs_option((struct settings_list *)qs->items[item], false);
 276     return true;
 277 }
 278 #ifdef HAVE_TOUCHSCREEN
 279 /* figure out which button was pressed...
 280  * top is exit, left/right/botton are the respective actions
 281  */
 282 static int quickscreen_touchscreen_button(void)
 283 {
 284     short x,y;
 285     if (action_get_touchscreen_press(&x, &y) != BUTTON_REL)
 286         return ACTION_NONE;
 287     if (y < vps[SCREEN_MAIN][QUICKSCREEN_LEFT].y)
 288         return ACTION_STD_CANCEL;
 289     else if (y > vps[SCREEN_MAIN][QUICKSCREEN_LEFT].y +
 290                  vps[SCREEN_MAIN][QUICKSCREEN_LEFT].height)
 291         return ACTION_QS_DOWN;
 292     else if (x < vps[SCREEN_MAIN][QUICKSCREEN_LEFT].x +
 293                  vps[SCREEN_MAIN][QUICKSCREEN_LEFT].width)
 294         return ACTION_QS_LEFT;
 295     else if (x >= vps[SCREEN_MAIN][QUICKSCREEN_RIGHT].x)
 296         return ACTION_QS_RIGHT;
 297     return ACTION_STD_CANCEL;
 298 }
 299 #endif
 300 static bool gui_syncquickscreen_run(struct gui_quickscreen * qs, int button_enter)
 301 {
 302     int button, i;
 303     struct viewport vp[NB_SCREENS];
 304     bool changed = false;
 305     /* To quit we need either :
 306      *  - a second press on the button that made us enter
 307      *  - an action taken while pressing the enter button,
 308      *    then release the enter button*/
 309     bool can_quit = false;
 310     FOR_NB_SCREENS(i)
 311     {
 312         screens[i].set_viewport(NULL);
 313         screens[i].stop_scroll();
 314         viewport_set_defaults(&vp[i], i);
 315         quickscreen_fix_viewports(qs, &screens[i], &vp[i]);
 316         gui_quickscreen_draw(qs, &screens[i], &vp[i]);
 317     }
 318     /* Announce current selection on entering this screen. This is all
 319        queued up, but can be interrupted as soon as a setting is
 320        changed. */
 321     cond_talk_ids(VOICE_QUICKSCREEN);
 322     talk_qs_option((struct settings_list *)qs->items[QUICKSCREEN_LEFT], true);
 323     talk_qs_option((struct settings_list *)qs->items[QUICKSCREEN_BOTTOM], true);
 324     talk_qs_option((struct settings_list *)qs->items[QUICKSCREEN_RIGHT], true);
 325     while (true) {
 326         button = get_action(CONTEXT_QUICKSCREEN,HZ/5);
 327 #ifdef HAVE_TOUCHSCREEN
 328         if (button == ACTION_TOUCHSCREEN)
 329             button = quickscreen_touchscreen_button();
 330 #endif
 331         if(default_event_handler(button) == SYS_USB_CONNECTED)
 332             return(true);
 333         if(gui_quickscreen_do_button(qs, button))
 334         {
 335             changed = true;
 336             can_quit=true;
 337             FOR_NB_SCREENS(i)
 338                 gui_quickscreen_draw(qs, &screens[i], &vp[i]);
 339             if (qs->callback)
 340                 qs->callback(qs);
 341         }
 342         else if(button==button_enter)
 343             can_quit=true;
 344
 345         if((button == button_enter) && can_quit)
 346             break;
 347
 348         if(button==ACTION_STD_CANCEL)
 349             break;
 350     }
 351     /* Notify that we're exiting this screen */
 352     cond_talk_ids_fq(VOICE_OK);
 353     return changed;
 354 }
 355
 356 static inline const struct settings_list *get_setting(int gs_value,
 357                                         const struct settings_list *defaultval)
 358 {
 359     if (gs_value != -1 && gs_value < nb_settings &&
 360         is_setting_quickscreenable(&settings[gs_value]))
 361         return &settings[gs_value];
 362     return defaultval;
 363 }
 364 bool quick_screen_quick(int button_enter)
 365 {
 366     struct gui_quickscreen qs;
 367     bool oldshuffle = global_settings.playlist_shuffle;
 368     int oldrepeat = global_settings.repeat_mode;
 369
 370     qs.items[QUICKSCREEN_LEFT] =
 371             get_setting(global_settings.qs_item_left,
 372                         find_setting(&global_settings.playlist_shuffle, NULL));
 373     qs.items[QUICKSCREEN_RIGHT] =
 374             get_setting(global_settings.qs_item_right,
 375                     find_setting(&global_settings.repeat_mode, NULL));
 376     qs.items[QUICKSCREEN_BOTTOM] =
 377             get_setting(global_settings.qs_item_bottom,
 378                     find_setting(&global_settings.dirfilter, NULL));
 379
 380     qs.callback = NULL;
 381     if (gui_syncquickscreen_run(&qs, button_enter))
 382     {
 383         settings_save();
 384         settings_apply(false);
 385         /* make sure repeat/shuffle/any other nasty ones get updated */
 386         if ( oldrepeat != global_settings.repeat_mode &&
 387              (audio_status() & AUDIO_STATUS_PLAY) )
 388         {
 389             audio_flush_and_reload_tracks();
 390         }
 391         if (oldshuffle != global_settings.playlist_shuffle
 392             && audio_status() & AUDIO_STATUS_PLAY)
 393         {
 394 #if CONFIG_CODEC == SWCODEC
 395             dsp_set_replaygain();
 396 #endif
 397             if (global_settings.playlist_shuffle)
 398                 playlist_randomise(NULL, current_tick, true);
 399             else
 400                 playlist_sort(NULL, true);
 401         }
 402     }
 403     return(0);
 404 }
 405
 406 #ifdef BUTTON_F3
 407 bool quick_screen_f3(int button_enter)
 408 {
 409     struct gui_quickscreen qs;
 410     qs.items[QUICKSCREEN_LEFT] =
 411                     find_setting(&global_settings.scrollbar, NULL);
 412     qs.items[QUICKSCREEN_RIGHT] =
 413                     find_setting(&global_settings.statusbar, NULL);
 414     qs.items[QUICKSCREEN_BOTTOM] =
 415                     find_setting(&global_settings.flip_display, NULL);
 416     qs.callback = NULL;
 417     if (gui_syncquickscreen_run(&qs, button_enter))
 418     {
 419         settings_save();
 420         settings_apply(false);
 421     }
 422     return(0);
 423 }
 424 #endif /* BUTTON_F3 */
 425
 426 /* stuff to make the quickscreen configurable */
 427 bool is_setting_quickscreenable(const struct settings_list *setting)
 428 {
 429     /* to keep things simple, only settings which have a lang_id set are ok */
 430     if (setting->lang_id < 0 || (setting->flags&F_BANFROMQS))
 431         return false;
 432     switch (setting->flags&F_T_MASK)
 433     {
 434         case F_T_BOOL:
 435             return true;
 436         case F_T_INT:
 437         case F_T_UINT:
 438             return (setting->RESERVED != NULL);
 439         default:
 440             return false;
 441     }
 442 }
 443
 444 void set_as_qs_item(const struct settings_list *setting,
 445                     enum quickscreen_item item)
 446 {
 447     int i;
 448     for(i=0;i<nb_settings;i++)
 449     {
 450         if (&settings[i] == setting)
 451             break;
 452     }
 453     switch (item)
 454     {
 455         case QUICKSCREEN_LEFT:
 456             global_settings.qs_item_left = i;
 457             break;
 458         case QUICKSCREEN_RIGHT:
 459             global_settings.qs_item_right = i;
 460             break;
 461         case QUICKSCREEN_BOTTOM:
 462             global_settings.qs_item_bottom = i;
 463             break;
 464         default: /* shut the copiler up */
 465             break;
 466     }
 467 }
 468