apps/gui/textarea.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Kevin Ferrare
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include "textarea.h"
  21 #include "font.h"
  22
  23 void gui_textarea_clear(struct screen * display)
  24 {
  25 #ifdef HAVE_LCD_BITMAP
  26     int y_start = gui_textarea_get_ystart(display);
  27     int y_end = gui_textarea_get_yend(display);
  28     screen_clear_area(display, 0, y_start, display->width, y_end - y_start);
  29     display->stop_scroll();
  30     screen_set_ymargin(display, y_start);
  31 #else
  32     display->clear_display();
  33 #endif
  34 }
  35
  36 void gui_textarea_update(struct screen * display)
  37 {
  38 #ifdef HAVE_LCD_BITMAP
  39     int y_start = gui_textarea_get_ystart(display);
  40     int y_end = gui_textarea_get_yend(display);
  41     display->update_rect(0, y_start, display->width, y_end - y_start);
  42 #else
  43     display->update();
  44 #endif
  45 }
  46
  47 int gui_textarea_put_message(struct screen * display,
  48                              struct text_message * message,
  49                              int ystart)
  50 {
  51     int i;
  52     gui_textarea_clear(display);
  53     for(i=0;i<message->nb_lines && i+ystart<display->nb_lines;i++)
  54         display->puts_scroll(0, i+ystart, (unsigned char *)message->message_lines[i]);
  55     gui_textarea_update(display);
  56     return(i);
  57 }
  58
  59 void gui_textarea_update_nblines(struct screen * display)
  60 {
  61     int height=display->height;
  62 #ifdef HAVE_LCD_BITMAP
  63     if(global_settings.statusbar)
  64         height -= STATUSBAR_HEIGHT;
  65 #ifdef HAS_BUTTONBAR
  66     if(global_settings.buttonbar && display->has_buttonbar)
  67         height -= BUTTONBAR_HEIGHT;
  68 #endif
  69     display->getstringsize((unsigned char *)"A", &display->char_width,
  70                            &display->char_height);
  71 #else
  72     display->char_width  = 1;
  73     display->char_height = 1;
  74 #endif
  75     display->nb_lines = height / display->char_height;
  76 }