bertos/gui/leveledit.c

   1 /**
   2  * \file
   3  * <!--
   4  * This file is part of BeRTOS.
   5  *
   6  * Bertos is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  * As a special exception, you may use this file as part of a free software
  21  * library without restriction.  Specifically, if other files instantiate
  22  * templates or use macros or inline functions from this file, or you compile
  23  * this file and link it with other files to produce an executable, this
  24  * file does not by itself cause the resulting executable to be covered by
  25  * the GNU General Public License.  This exception does not however
  26  * invalidate any other reasons why the executable file might be covered by
  27  * the GNU General Public License.
  28  *
  29  * Copyright 2004, 2006 Develer S.r.l. (http://www.develer.com/)
  30  *
  31  * -->
  32  *
  33  * \brief Generic editor for (volume/gain/contrast/...) setting.
  34  *
  35  * \version $Id$
  36  * \author Stefano Fedrigo <aleph@develer.com>
  37  */
  38
  39 #include "leveledit.h"
  40
  41 #include "cfg/cfg_gfx.h"
  42 #include <cfg/macros.h> /* MAX() */
  43
  44 #include <drv/kbd.h>
  45 #include <drv/timer.h>
  46
  47 #include <gui/levelbar.h>
  48
  49 #include <mware/pgm.h>
  50
  51 #include <gfx/text.h>
  52 #include <gfx/font.h>
  53
  54 #if CONFIG_MENU_MENUBAR
  55 #include <gui/menubar.h>
  56 #endif
  57
  58 #include <drv/lcd_gfx.h>
  59
  60 #warning FIXME: Revise me!
  61
  62 #define LBAR_HEIGHT 16
  63
  64 /**
  65  * Allow user to change level.
  66  */
  67 void level_edit(struct LevelEdit *lev)
  68 {
  69 #if CONFIG_MENU_MENUBAR
  70         /* Labels for menubars */
  71         enum LabelId ch_labels[] = { LABEL_C1PLUS2, LABEL_CH_1, LABEL_CH_2 };
  72         const_iptr_t labels[] =
  73         {
  74                 (const_iptr_t)LABEL_BACK,
  75                 (const_iptr_t)LABEL_MINUS,
  76                 (const_iptr_t)LABEL_PLUS,
  77                 (const_iptr_t)LABEL_EMPTY
  78         };
  79         struct MenuBar mb;
  80 #endif /* CONFIG_MENU_MENUBAR */
  81
  82         struct LevelBar bar1, bar2;
  83         keymask_t keys, old_rpt_mask;
  84         int step, rep_step;
  85
  86         rep_step = MAX(lev->step, ((lev->max - lev->min) / 200));
  87         step = lev->step;
  88
  89         // Allow keys repetition.
  90         old_rpt_mask = kbd_setRepeatMask(K_UP | K_DOWN);
  91
  92         text_clear(lev->bitmap);
  93         //text_style(STYLEF_UNDERLINE, STYLEF_UNDERLINE);
  94         text_puts(lev->title, lev->bitmap);
  95         //text_style(0, STYLEF_UNDERLINE);
  96
  97         if (lev->type & LEVELEDIT_DOUBLE)
  98         {
  99                 int chn = 0;  /* edit both channels */
 100
 101                 /* Levelbars init */
 102                 lbar_init(&bar1, lev->bitmap, LBAR_HORIZONTAL,
 103                                 lev->min, lev->max, *lev->ch1_val, 0, 16, lev->bitmap->width / 2 - 1, 23);
 104                 lbar_init(&bar2, lev->bitmap, LBAR_HORIZONTAL,
 105                                 lev->min, lev->max, *lev->ch2_val, lev->bitmap->width / 2 + 1, 16, lev->bitmap->width, 23);
 106
 107                 #if CONFIG_MENU_MENUBAR
 108                         labels[3] = (const_iptr_t)ch_labels[chn];
 109                         mbar_init(&mb, lev->bitmap, labels, countof(labels));
 110                         mbar_draw(&mb);
 111                 #endif /* CONFIG_MENU_MENUBAR */
 112
 113                 /* Input loop for double level setting */
 114                 for (;;)
 115                 {
 116                         #if CONFIG_LEVELEDIT_TIMEOUT != 0
 117                                 ticks_t idle_timeout = timer_clock();
 118                         #endif
 119                         do
 120                         {
 121                                 if (lev->display_hook)
 122                                         lev->display_hook(lev);
 123                                 else
 124                                 {
 125                                         text_xprintf(lev->bitmap, 1, 0, TEXT_CENTER | TEXT_FILL, lev->unit);
 126                                         PGM_FUNC(text_xprintf)(lev->bitmap, 1, 3, 0, PGM_STR("%d"), *lev->ch1_val);
 127                                         PGM_FUNC(text_xprintf)(lev->bitmap, 1, 14, 0, PGM_STR("%d"), *lev->ch2_val);
 128
 129                                         lbar_setLevel(&bar1, *lev->ch1_val);
 130                                         lbar_setLevel(&bar2, *lev->ch2_val);
 131                                         lbar_draw(&bar1);
 132                                         lbar_draw(&bar2);
 133                                 }
 134
 135                                 #if CONFIG_LEVELEDIT_TIMEOUT != 0
 136                                         if (timer_clock() - idle_timeout > ms_to_ticks(CONFIG_LEVELEDIT_TIMEOUT))
 137                                         {
 138                                                 /* Accept input implicitly */
 139                                                 keys = K_OK;
 140                                                 break;
 141                                         }
 142                                 #endif
 143                         }
 144                         while (!(keys = kbd_peek()));
 145
 146                         if (keys & K_CANCEL)
 147                                 break;
 148
 149                         if (keys & K_OK)
 150                         {
 151                                 chn = (chn + 1) % 3;
 152
 153                                 #if CONFIG_MENU_MENUBAR
 154                                         labels[3] = (const_iptr_t)ch_labels[chn];
 155                                         mbar_draw(&mb);
 156                                 #endif /* CONFIG_MENU_MENUBAR */
 157                         }
 158
 159                         /* Increment step to achieve greater accelerations on larger values */
 160                         if (keys & K_REPEAT)
 161                                 step = MIN(rep_step, step + 1);
 162                         else
 163                                 step = lev->step;
 164
 165                         if (keys & (K_UP | K_DOWN))
 166                         {
 167                                 if (keys & K_UP)
 168                                 {
 169                                         /* If changing both channels (chn == 0), don't change
 170                                          * level if one of two is at min or max */
 171                                         if (chn != 0 ||
 172                                                         (*lev->ch1_val + step <= lev->max
 173                                                          && *lev->ch2_val + step <= lev->max))
 174                                         {
 175                                                 /* If chn == 0 change both channels */
 176                                                 if (chn != 2)
 177                                                 {
 178                                                         *lev->ch1_val += step;
 179                                                         if (*lev->ch1_val > lev->max)
 180                                                                 *lev->ch1_val = lev->max;
 181                                                 }
 182                                                 if (chn != 1)
 183                                                 {
 184                                                         *lev->ch2_val += step;
 185                                                         if (*lev->ch2_val > lev->max)
 186                                                                 *lev->ch2_val = lev->max;
 187                                                 }
 188                                         }
 189                                 }
 190                                 else
 191                                 {
 192                                         if (chn != 0 ||
 193                                                         (*lev->ch1_val - step >= lev->min
 194                                                          && *lev->ch2_val - step >= lev->min))
 195                                         {
 196                                                 if (chn != 2)
 197                                                 {
 198                                                         *lev->ch1_val -= step;
 199                                                         if (*lev->ch1_val < lev->min)
 200                                                                 *lev->ch1_val = lev->min;
 201                                                 }
 202                                                 if (chn != 1)
 203                                                 {
 204                                                         *lev->ch2_val -= step;
 205                                                         if (*lev->ch2_val < lev->min)
 206                                                                 *lev->ch2_val = lev->min;
 207                                                 }
 208                                         }
 209                                 }
 210
 211                                 if (lev->set_hook)
 212                                         lev->set_hook();
 213                         }
 214                 } // end for(;;)
 215         }
 216         else
 217         {
 218                 const PGM_ATTR char *fmt = lev->unit ? PGM_STR("%d %s") : PGM_STR("%d");
 219
 220 /*
 221                 const int textw = MAX(PGM_FUNC(text_widthf)(lev->bitmap, fmt, lev->max, lev->unit),
 222                                 PGM_FUNC(text_widthf)(lev->bitmap, fmt, lev->min, lev->unit));
 223
 224                 const coord_t barlen = lev->bitmap->width - 6 - textw;
 225 */
 226                 const coord_t barlen = lev->bitmap->width;
 227                 const coord_t barvtop = lev->bitmap->height / 2 - LBAR_HEIGHT/2 + lev->bitmap->font->height;
 228                 lbar_init(&bar1, lev->bitmap, LBAR_HORIZONTAL,
 229                           lev->min, lev->max, *lev->ch1_val,
 230                           0, barvtop, barlen,  barvtop + LBAR_HEIGHT);
 231
 232                 #if CONFIG_MENU_MENUBAR
 233                         mbar_init(&mb, lev->bitmap, labels, countof(labels));
 234                         mbar_draw(&mb);
 235                 #endif /* CONFIG_MENU_MENUBAR */
 236
 237                 /* Input loop for single level setting */
 238                 for (;;)
 239                 {
 240                         #if CONFIG_LEVELEDIT_TIMEOUT != 0
 241                                 ticks_t idle_timeout = timer_clock();
 242                         #endif
 243                         do
 244                         {
 245                                 if (lev->display_hook)
 246                                         lev->display_hook(lev);
 247                                 else
 248                                 {
 249                                         if (lev->type != LEVELEDIT_NOBAR)
 250                                         {
 251                                                 lbar_setLevel(&bar1, *lev->ch1_val);
 252                                                 lbar_draw(&bar1);
 253                                         }
 254                                         PGM_FUNC(text_xyprintf)(lev->bitmap, 0, bar1.y1 - lev->bitmap->font->height,
 255                                                 TEXT_CENTER | TEXT_FILL, fmt, *lev->ch1_val, lev->unit);
 256                                 }
 257
 258                                 #if CONFIG_LEVELEDIT_TIMEOUT != 0
 259                                         if (timer_clock() - idle_timeout > CONFIG_LEVELEDIT_TIMEOUT)
 260                                         {
 261                                                 /* Accept input implicitly */
 262                                                 keys = K_CANCEL;
 263                                                 break;
 264                                         }
 265                                 #endif
 266
 267                         }
 268                         while (!(keys = kbd_peek()));
 269
 270                         if (keys & K_CANCEL)
 271                                 break;
 272
 273                         /* Increment step to achieve greater accelerations on larger values */
 274                         if (keys & K_REPEAT)
 275                                 step = MIN(rep_step, step + 1);
 276                         else
 277                                 step = lev->step;
 278
 279                         if (keys & K_UP)
 280                         {
 281                                 *lev->ch1_val += step;
 282                                 if (*lev->ch1_val > lev->max)
 283                                         *lev->ch1_val = lev->max;
 284                         }
 285
 286                         if (keys & K_DOWN)
 287                         {
 288                                 *lev->ch1_val -= step;
 289                                 if (*lev->ch1_val < lev->min)
 290                                         *lev->ch1_val = lev->min;
 291                         }
 292
 293                         if (lev->set_hook)
 294                                 lev->set_hook();
 295                 }
 296         }
 297
 298         kbd_setRepeatMask(old_rpt_mask);
 299 }
 300
 301 /**
 302  * LevelEdit structure initialization.
 303  * Init data structure and init LevelEdit widgets.
 304  */
 305 void level_init(struct LevelEdit *lev,
 306                 int type,
 307                 struct Bitmap *bmp, const char *title, const char *unit,
 308                 int min, int max, int step,
 309                 int *ch1_val, int *ch2_val,
 310                 level_set_callback *set_hook, display_callback *display_hook)
 311 {
 312         lev->type   = type;
 313         lev->bitmap = bmp;
 314         lev->title  = title;
 315         lev->unit   = unit;
 316         lev->min    = min;
 317         lev->max    = max;
 318         lev->step   = step;
 319
 320         lev->ch1_val = ch1_val;
 321         lev->ch2_val = ch2_val;
 322         lev->set_hook     = set_hook;
 323         lev->display_hook = display_hook;
 324 }