resources/keybscr.cpp

   1 /* Quarn OS
   2  *
   3  * Keyboard and Screen
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "keybscr.h"
  24 #include "x86_keybscr.h"
  25
  26 #include "manes/manec.h"
  27 #include "libs/delegate.h"
  28 #include "libs/colors.h"
  29
  30 using namespace manes;
  31 using namespace resources;
  32
  33 keybscr::keybscr() : x(17), y(0) {}
  34
  35
  36 void keybscr::read(buffer &data) {
  37         for (int i = 0; i < data.get_size(); i++)
  38                 data[i] = buf.pop();
  39 }
  40
  41 void keybscr::write(const buffer &data) {
  42         for (int i = 0; i < data.get_size(); i++) {
  43
  44                 if (data[i] == '\n') {
  45                         if (y < get_height() - 1)
  46                                 y++;
  47                         else
  48                                 scr_scroll();
  49                         x = 0;
  50                 } else if (data[i] == '\t') {
  51                         x = (x/8 + 1) * 8;
  52                 } else {
  53                         screen_print(data[i], foreground | (background << 4), x, y);
  54                         x++;
  55                 }
  56
  57                 y += x / get_width();
  58                 if (x / get_width() > 0 && y >= get_height() - 1)
  59                         scr_scroll();
  60                 y = y < get_height() ? y : get_height() - 1;
  61                 x = x % get_width();
  62         }
  63
  64 }
  65
  66 void keybscr::set_ondatareceived(delegate<void> event) {
  67         assert("keybscr: attempt to set null event handler", event.null());
  68         on_data_received = event;
  69 }
  70
  71 void keybscr::received(const char key) {
  72         buf.push(key);
  73         write(buffer::to_mem(key));
  74
  75         /* delayed action */
  76         on_data_received();
  77 }
  78
  79 void keybscr::register_type() {
  80         manec::get()->register_type<arch_keybscr>("keybscr", "console");
  81 }