kkconsui/src/screenarea.cc

   1 /*
   2 *
   3 * a class for saving and restoring screen areas
   4 * $Id: screenarea.cc,v 1.1 2001/06/27 13:42:07 konst Exp $
   5 *
   6 * Copyright (C) 1999-2001 by Konstantin Klyagin <k@thekonst.net>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or (at
  11 * your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful, but
  14 * WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 * General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 * USA
  22 *
  23 */
  24
  25 #include "screenarea.h"
  26
  27 screenarea::screenarea() {
  28 }
  29
  30 screenarea::screenarea(int fx1, int fy1, int fx2, int fy2) {
  31     save(fx1, fy1, fx2, fy2);
  32 }
  33
  34 screenarea::~screenarea() {
  35     freebuffer();
  36 }
  37
  38 void screenarea::save() {
  39     save(0, 0, COLS, LINES);
  40 }
  41
  42 void screenarea::save(int fx1, int fy1, int fx2, int fy2) {
  43     int i;
  44     chtype *line;
  45 #ifdef HAVE_NCURSESW
  46     wchar_t *line2;
  47 #endif
  48
  49     freebuffer();
  50
  51     for(i = 0; i <= fy2-fy1; i++) {
  52         line = new chtype[fx2-fx1+2];
  53 #ifdef HAVE_NCURSESW
  54         line2 = new wchar_t[fx2-fx1+2];
  55 #endif
  56         mvinchnstr(fy1+i, fx1, line, fx2-fx1+1);
  57 #ifdef HAVE_NCURSESW
  58         mvinnwstr(fy1+i, fx1, line2, fx2-fx1+1);
  59 #endif
  60         buffer.push_back(line);
  61 #ifdef HAVE_NCURSESW
  62         buffer2.push_back(line2);
  63 #endif
  64     }
  65
  66     x1 = fx1;
  67     y1 = fy1;
  68     x2 = fx2;
  69     y2 = fy2;
  70 }
  71
  72 void screenarea::restore() {
  73     restore(x1, y1, x2, y2);
  74 }
  75
  76 void screenarea::restore(int fx1, int fy1, int fx2, int fy2) {
  77     vector<chtype *>::iterator i;
  78 #ifdef HAVE_NCURSESW
  79     vector<wchar_t *>::iterator j;
  80 #endif
  81     int k = fy1;
  82     chtype *line;
  83 #ifdef HAVE_NCURSESW
  84     wchar_t *line2;
  85 #endif
  86     int l;
  87     if(!buffer.empty()) {
  88 #ifdef HAVE_NCURSESW
  89         for(i = buffer.begin(), j = buffer2.begin(); i != buffer.end(); i++, j++) {
  90 #else
  91         for(i = buffer.begin(); i != buffer.end(); i++) {
  92 #endif
  93             line = *i;
  94 #ifdef HAVE_NCURSESW
  95             line2 = *j;
  96             const chtype *line_ptr = line;
  97             const wchar_t *line2_ptr = line2;
  98             for(l = 0; l < fx2-fx1+1; l++, line_ptr++, line2_ptr++ )
  99             {
 100                     attrset( (*line_ptr & A_COLOR) | (*line_ptr & A_ATTRIBUTES) );
 101                     mvaddnwstr(k, fx1+l, line2_ptr, 1);
 102             }
 103             k++;
 104 #else
 105             mvaddchnstr(k++, fx1, line, fx2-fx1+1);
 106 #endif
 107
 108         }
 109
 110         refresh();
 111     }
 112
 113     freebuffer();
 114 }
 115
 116 void screenarea::freebuffer() {
 117     while(!buffer.empty()) {
 118         delete[] buffer.front();
 119         buffer.erase(buffer.begin());
 120     }
 121 #ifdef HAVE_NCURSESW
 122     while(!buffer2.empty()) {
 123         delete[] buffer2.front();
 124         buffer2.erase(buffer2.begin());
 125     }
 126 #endif
 127 }
 128
 129 bool screenarea::empty() {
 130     return buffer.empty();
 131 }