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 "sprintf.h"
  29 #include "string.h"
  30 #include "settings.h"
  31 #include "kernel.h"
  32 #include "system.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 list_draw(struct screen *display, struct gui_synclist *gui_list)
  42 {
  43     int text_pos;
  44     bool draw_icons = (gui_list->callback_get_item_icon != NULL &&
  45                        global_settings.show_icons);
  46     bool draw_cursor;
  47     int i;
  48     int lines;
  49     int start, end;
  50
  51     display->set_viewport(NULL);
  52     lines = display->getnblines();
  53
  54     display->clear_display();
  55     start = 0;
  56     end = display->getnblines();
  57     gui_list->last_displayed_start_item[display->screen_type] =
  58                                 gui_list->start_item[display->screen_type];
  59
  60     gui_list->last_displayed_selected_item = gui_list->selected_item;
  61
  62     /* Adjust the position of icon, cursor, text for the list */
  63     draw_cursor = true;
  64     if(draw_icons)
  65         text_pos = 2; /* here it's in chars */
  66     else
  67         text_pos = 1;
  68
  69     for (i = start; i < end; i++)
  70     {
  71         unsigned char *s;
  72         char entry_buffer[MAX_PATH];
  73         unsigned char *entry_name;
  74         int current_item = gui_list->start_item[display->screen_type] + i;
  75
  76         /* When there are less items to display than the
  77          * current available space on the screen, we stop*/
  78         if(current_item >= gui_list->nb_items)
  79             break;
  80         s = gui_list->callback_get_item_name(current_item,
  81                                              gui_list->data,
  82                                              entry_buffer,
  83                                              sizeof(entry_buffer));
  84         entry_name = P2STR(s);
  85
  86
  87         if(gui_list->show_selection_marker &&
  88            current_item >= gui_list->selected_item &&
  89            current_item <  gui_list->selected_item + gui_list->selected_size)
  90         {/* The selected item must be displayed scrolling */
  91             display->puts_scroll(text_pos, i, entry_name);
  92
  93             if (draw_cursor)
  94             {
  95                 screen_put_icon_with_offset(display, 0, i,
  96                                            (draw_scrollbar || SHOW_LIST_TITLE)?
  97                                                    SCROLLBAR_WIDTH: 0,
  98                                            0, Icon_Cursor);
  99             }
 100         }
 101         else
 102         {/* normal item */
 103             if(gui_list->scroll_all)
 104             {
 105                 display->puts_scroll(text_pos, i, entry_name);
 106             }
 107             else
 108             {
 109                 display->puts(text_pos, i, entry_name);
 110             }
 111         }
 112         /* Icons display */
 113         if(draw_icons)
 114         {
 115             enum themable_icons icon;
 116             icon = gui_list->callback_get_item_icon(current_item,
 117                                                     gui_list->data);
 118             if(icon > Icon_NOICON)
 119             {
 120                 screen_put_icon(display, 1, i, icon);
 121             }
 122         }
 123     }
 124
 125     display->update_viewport();
 126     display->update();
 127 }