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 #include "file.h"
  34
  35 #include "list.h"
  36 #include "screen_access.h"
  37 #include "scrollbar.h"
  38 #include "lang.h"
  39 #include "sound.h"
  40 #include "misc.h"
  41
  42 void list_draw(struct screen *display, struct gui_synclist *gui_list)
  43 {
  44     int text_pos;
  45     bool draw_icons = (gui_list->callback_get_item_icon != NULL &&
  46                        global_settings.show_icons);
  47     bool draw_cursor;
  48     int i;
  49     int lines;
  50     int start, end;
  51
  52     display->set_viewport(NULL);
  53     lines = display->getnblines();
  54
  55     display->clear_display();
  56     start = 0;
  57     end = display->getnblines();
  58     gui_list->last_displayed_start_item[display->screen_type] =
  59                                 gui_list->start_item[display->screen_type];
  60
  61     gui_list->last_displayed_selected_item = gui_list->selected_item;
  62
  63     /* Adjust the position of icon, cursor, text for the list */
  64     draw_cursor = true;
  65     if(draw_icons)
  66         text_pos = 2; /* here it's in chars */
  67     else
  68         text_pos = 1;
  69
  70     for (i = start; i < end; i++)
  71     {
  72         unsigned const char *s;
  73         char entry_buffer[MAX_PATH];
  74         unsigned char *entry_name;
  75         int current_item = gui_list->start_item[display->screen_type] + i;
  76
  77         /* When there are less items to display than the
  78          * current available space on the screen, we stop*/
  79         if(current_item >= gui_list->nb_items)
  80             break;
  81         s = gui_list->callback_get_item_name(current_item,
  82                                              gui_list->data,
  83                                              entry_buffer,
  84                                              sizeof(entry_buffer));
  85         entry_name = P2STR(s);
  86
  87
  88         if(gui_list->show_selection_marker &&
  89            current_item >= gui_list->selected_item &&
  90            current_item <  gui_list->selected_item + gui_list->selected_size)
  91         {/* The selected item must be displayed scrolling */
  92             display->puts_scroll(text_pos, i, entry_name);
  93
  94             if (draw_cursor)
  95             {
  96                 screen_put_icon_with_offset(display, 0, i,
  97                                            (draw_scrollbar || SHOW_LIST_TITLE)?
  98                                                    SCROLLBAR_WIDTH: 0,
  99                                            0, Icon_Cursor);
 100             }
 101         }
 102         else
 103         {/* normal item */
 104             if(gui_list->scroll_all)
 105             {
 106                 display->puts_scroll(text_pos, i, entry_name);
 107             }
 108             else
 109             {
 110                 display->puts(text_pos, i, entry_name);
 111             }
 112         }
 113         /* Icons display */
 114         if(draw_icons)
 115         {
 116             enum themable_icons icon;
 117             icon = gui_list->callback_get_item_icon(current_item,
 118                                                     gui_list->data);
 119             if(icon > Icon_NOICON)
 120             {
 121                 screen_put_icon(display, 1, i, icon);
 122             }
 123         }
 124     }
 125
 126     display->update_viewport();
 127     display->update();
 128 }