uisimulator/common/backlight-sim.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 by Thomas Martitz
  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 #include <stdbool.h>
  23 #include "config.h"
  24 #include "backlight.h"
  25 #include "lcd.h"
  26
  27 #ifdef HAVE_LCD_SLEEP
  28 extern void lcd_awake(void);
  29 #endif
  30 /* in uisimulator/sdl/lcd-bitmap.c and lcd-charcell.c */
  31 extern void sim_backlight(int value);
  32
  33 static inline int normalize_backlight(int val)
  34 {
  35     /* normalize to xx% brightness for sdl */
  36     return ((val - MIN_BRIGHTNESS_SETTING + 1) * 100)/MAX_BRIGHTNESS_SETTING;
  37 }
  38
  39 bool _backlight_init(void)
  40 {
  41     return true;
  42 }
  43
  44 void _backlight_on(void)
  45 {
  46 #if defined(HAVE_LCD_ENABLE)
  47     lcd_enable(true);
  48 #elif defined(HAVE_LCD_SLEEP)
  49     lcd_awake();
  50 #endif
  51 #if (CONFIG_BACKLIGHT_FADING != BACKLIGHT_FADING_SW_SETTING)
  52     /* if we set the brightness to the settings value, then fading up
  53      * is glitchy */
  54     sim_backlight(normalize_backlight(backlight_brightness));
  55 #endif
  56 }
  57
  58 void _backlight_off(void)
  59 {
  60     sim_backlight(0);
  61 #ifdef HAVE_LCD_ENABLE
  62     lcd_enable(false);
  63 #endif
  64 }
  65
  66 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
  67 void _backlight_set_brightness(int val)
  68 {
  69     sim_backlight(normalize_backlight(val));
  70 }
  71 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
  72 #ifdef HAVE_BUTTON_LIGHT
  73 void _buttonlight_on(void)
  74 {
  75 }
  76
  77 void _buttonlight_off(void)
  78 {
  79 }
  80
  81 #ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
  82 void _buttonlight_set_brightness(int val)
  83 {
  84     (void)val;
  85 }
  86 #endif /* HAVE_BUTTONLIGHT_BRIGHTNESS */
  87 #endif /* HAVE_BUTTON_LIGHT */
  88
  89 #ifdef HAVE_REMOTE_LCD
  90 void _remote_backlight_on(void)
  91 {
  92     sim_remote_backlight(100);
  93 }
  94
  95 void _remote_backlight_off(void)
  96 {
  97     sim_remote_backlight(0);
  98 }
  99 #endif /* HAVE_REMOTE_LCD */