apps/gui/viewport.h

   1
   2 /***************************************************************************
   3  *             __________               __   ___.
   4  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   5  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   6  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   7  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   8  *                     \/            \/     \/    \/            \/
   9  * $Id$
  10  *
  11  * Copyright (C) 2008 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
  23 #ifndef __VIEWPORT_H__
  24 #define __VIEWPORT_H__
  25
  26
  27 #include "config.h"
  28 #include "lcd.h"
  29 #include "system.h"
  30 #include "screen_access.h"
  31
  32 /* return the number of text lines in the vp viewport */
  33 int viewport_get_nb_lines(struct viewport *vp);
  34
  35 void viewport_set_defaults(struct viewport *vp, enum screen_type screen);
  36
  37 /* Used to specify which screens the statusbar (SB) should be displayed on.
  38  *
  39  * The parameter is a bit OR'ed combination of the following (screen is
  40  * SCREEN_MAIN or SCREEN_REMOTE from screen_access.h):
  41  *
  42  * VP_SB_HIDE_ALL means "hide the SB on all screens"
  43  * VP_SB_ONSCREEN(screen) means "display the SB on the given screen
  44  *                              as specified by the SB setting for that screen"
  45  * VP_SB_IGNORE_SETTING(screen) means "ignore the SB setting for that screen"
  46  * VP_SB_ALLSCREENS means "VP_SB_ONSCREEN for all screens"
  47  *
  48  * In most cases, VP_SB_ALLSCREENS should be used which means display the SB
  49  * as specified by the settings.
  50  * For the WPS (and other possible exceptions) use VP_SB_IGNORE_SETTING() to
  51  * FORCE the statusbar on for the given screen (i.e it will show regardless
  52  * of the setting)
  53  *
  54  * Returns the status before the call. This value can be used to restore the
  55  * SB "displaying rules".
  56  */
  57
  58
  59 #define THEME_STATUSBAR     (BIT_N(0))
  60 #define THEME_UI_VIEWPORT   (BIT_N(1))
  61 #define THEME_ALL           (~(0u))
  62
  63 #define VP_SB_HIDE_ALL 0
  64 #define VP_SB_ONSCREEN(screen) BIT_N(screen)
  65 #define VP_SB_IGNORE_SETTING(screen) BIT_N(4+screen)
  66 #define VP_SB_ALLSCREENS (VP_SB_ONSCREEN(0)|VP_SB_ONSCREEN(1))
  67
  68 /*
  69  * Initialize the viewportmanager, which in turns initializes the UI vp and
  70  * statusbar stuff
  71  */
  72 void viewportmanager_init(void);
  73 int viewportmanager_get_statusbar(void);
  74 int viewportmanager_set_statusbar(int enabled);
  75
  76 /* call this when a theme changed */
  77 void viewportmanager_theme_changed(int);
  78
  79 /*
  80  * Initializes the given viewport with maximum dimensions minus status- and
  81  * buttonbar
  82  */
  83 void viewport_set_fullscreen(struct viewport *vp, enum screen_type screen);
  84
  85 #ifdef HAVE_LCD_BITMAP
  86
  87 /*
  88  * Parse a viewport definition (vp_def), which looks like:
  89  *
  90  * Screens with depth > 1:
  91  *   X|Y|width|height|font|foregorund color|background color
  92  * Screens with depth = 1:
  93  *   X|Y|width|height|font
  94  *
  95  * | is a separator and can be specified via the parameter
  96  *
  97  * Returns the pointer to the char after the last character parsed
  98  * if everything went OK or NULL if an error happened (some values
  99  * not specified in the definition)
 100  */
 101 const char* viewport_parse_viewport(struct viewport *vp,
 102                                     enum screen_type screen,
 103                                     const char *vp_def,
 104                                     const char separator);
 105
 106 /*
 107  * Returns a pointer to the current viewport
 108  *  - That could be the UI vp, or a viewport passed to do_menu() or the like
 109  */
 110 struct viewport* viewport_get_current_vp(void);
 111
 112 /*
 113  * Set the UI vp pointer to a different one - NULL to reset to the UI vp
 114  *
 115  * This is needed since the UI viewport needs is kept in RAM.
 116  */
 117 void viewport_set_current_vp(struct viewport* vp);
 118
 119 #else /* HAVE_LCD_CHARCELL */
 120 #define viewport_set_current_vp(a)
 121 #define viewport_get_current_vp() NULL
 122 #endif
 123 #endif /* __VIEWPORT_H__ */