apps/gui/charcell/list.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 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 /* This file contains the code to draw the list widget on BITMAP LCDs. */
  23
  24 #include "config.h"
  25 #include "lcd.h"
  26 #include "font.h"
  27 #include "button.h"
  28 #include "string.h"
  29 #include "settings.h"
  30 #include "kernel.h"
  31 #include "system.h"
  32 #include "file.h"
  33
  34 #include "list.h"
  35 #include "screen_access.h"
  36 #include "scrollbar.h"
  37 #include "lang.h"
  38 #include "sound.h"
  39 #include "misc.h"
  40
  41 void gui_synclist_scroll_stop(struct gui_synclist *lists)
  42 {
  43     int i;
  44     (void)lists;
  45     FOR_NB_SCREENS(i)
  46     {
  47         screens[i].stop_scroll();
  48     }
  49 }
  50
  51 void list_draw(struct screen *display, struct gui_synclist *gui_list)
  52 {
  53     int text_pos;
  54     bool draw_icons = (gui_list->callback_get_item_icon != NULL &&
  55                        global_settings.show_icons);
  56     bool draw_cursor;
  57     int i;
  58     int lines;
  59     int start, end;
  60
  61     display->set_viewport(NULL);
  62     lines = display->getnblines();
  63
  64     display->clear_display();
  65     start = 0;
  66     end = display->getnblines();
  67
  68     /* Adjust the position of icon, cursor, text for the list */
  69     draw_cursor = true;
  70     if(draw_icons)
  71         text_pos = 2; /* here it's in chars */
  72     else
  73         text_pos = 1;
  74
  75     for (i = start; i < end; i++)
  76     {
  77         unsigned const char *s;
  78         char entry_buffer[MAX_PATH];
  79         unsigned char *entry_name;
  80         int current_item = gui_list->start_item[display->screen_type] + i;
  81
  82         /* When there are less items to display than the
  83          * current available space on the screen, we stop*/
  84         if(current_item >= gui_list->nb_items)
  85             break;
  86         s = gui_list->callback_get_item_name(current_item,
  87                                              gui_list->data,
  88                                              entry_buffer,
  89                                              sizeof(entry_buffer));
  90         entry_name = P2STR(s);
  91
  92
  93         if(gui_list->show_selection_marker &&
  94            current_item >= gui_list->selected_item &&
  95            current_item <  gui_list->selected_item + gui_list->selected_size)
  96         {/* The selected item must be displayed scrolling */
  97             display->puts_scroll(text_pos, i, entry_name);
  98
  99             if (draw_cursor)
 100             {
 101                 screen_put_icon_with_offset(display, 0, i,
 102                                            (draw_scrollbar || SHOW_LIST_TITLE)?
 103                                                    SCROLLBAR_WIDTH: 0,
 104                                            0, Icon_Cursor);
 105             }
 106         }
 107         else
 108         {/* normal item */
 109             if(gui_list->scroll_all)
 110             {
 111                 display->puts_scroll(text_pos, i, entry_name);
 112             }
 113             else
 114             {
 115                 display->puts(text_pos, i, entry_name);
 116             }
 117         }
 118         /* Icons display */
 119         if(draw_icons)
 120         {
 121             enum themable_icons icon;
 122             icon = gui_list->callback_get_item_icon(current_item,
 123                                                     gui_list->data);
 124             if(icon > Icon_NOICON)
 125             {
 126                 screen_put_icon(display, 1, i, icon);
 127             }
 128         }
 129     }
 130
 131     display->update_viewport();
 132     display->update();
 133 }