apps/gui/skin_engine/skin_backdrops.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 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 #include "config.h"
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26
  27 #include "settings.h"
  28 #include "skin_buffer.h"
  29 #include "wps_internals.h"
  30 #include "skin_engine.h"
  31
  32 #if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1))
  33
  34 static struct skin_backdrop {
  35     char name[MAX_FILENAME+1];
  36     char *buffer;
  37     enum screen_type screen;
  38 } backdrops[SKINNABLE_SCREENS_COUNT*NB_SCREENS];
  39
  40 void skin_backdrop_init(void)
  41 {
  42     int i;
  43     for(i=0;i<SKINNABLE_SCREENS_COUNT*NB_SCREENS;i++)
  44     {
  45         backdrops[i].name[0] = '\0';
  46         backdrops[i].buffer = NULL;
  47     }
  48 }
  49
  50 /* load a backdrop into the skin buffer.
  51  * reuse buffers if the file is already loaded */
  52 char* skin_backdrop_load(char* backdrop, char *bmpdir, enum screen_type screen)
  53 {
  54     int i;
  55     struct skin_backdrop *bdrop = NULL;
  56     char filename[MAX_PATH];
  57     size_t buf_size;
  58     bool loaded = false;
  59 #if defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
  60     if (screen == SCREEN_REMOTE)
  61         buf_size = REMOTE_LCD_BACKDROP_BYTES;
  62     else
  63 #endif
  64         buf_size = LCD_BACKDROP_BYTES;
  65
  66     if (backdrop[0] == '-')
  67     {
  68 #if NB_SCREENS > 1
  69         if (screen == SCREEN_REMOTE)
  70         {
  71             return NULL; /* remotes don't have a backdrop setting (yet!) */
  72         }
  73         else
  74 #endif
  75         {
  76             char settings_bdrop = global_settings.backdrop_file[0];
  77             if (settings_bdrop == '\0' || settings_bdrop == '-')
  78             {
  79                 return NULL; /* backdrop setting not set */
  80             }
  81             snprintf(filename, sizeof(filename), "%s/%s.bmp",
  82                      BACKDROP_DIR, global_settings.backdrop_file);
  83         }
  84     }
  85     else
  86     {
  87         get_image_filename(backdrop, bmpdir, filename, sizeof(filename));
  88     }
  89
  90     for(i=0;i<SKINNABLE_SCREENS_COUNT*NB_SCREENS;i++)
  91     {
  92         if (!strcmp(backdrops[i].name, backdrop) && backdrops[i].screen == screen)
  93         {
  94             return backdrops[i].buffer;
  95         }
  96         else if (!bdrop && backdrops[i].buffer == NULL)
  97         {
  98             bdrop = &backdrops[i];
  99         }
 100     }
 101     if (!bdrop)
 102         return NULL; /* too many backdrops loaded */
 103
 104     bdrop->buffer = skin_buffer_alloc(buf_size);
 105     if (!bdrop->buffer)
 106         return NULL;
 107     loaded = screens[screen].backdrop_load(filename, bdrop->buffer);
 108     bdrop->screen = screen;
 109     strlcpy(bdrop->name, backdrop, MAX_FILENAME+1);
 110
 111     return loaded ? bdrop->buffer : NULL;
 112 }
 113 #else
 114
 115 void skin_backdrop_init(void)
 116 {
 117 }
 118 #endif