src/window.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2014 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #include <cstring>
  22 #include <cstdio>
  23 #include <cstdlib>
  24 #include <iostream>
  25 #include <readline/history.h>
  26 #include <readline/readline.h>
  27
  28 #ifdef WIN32
  29 # include <winsock.h>
  30 #else
  31 # include <sys/select.h>
  32 # include <unistd.h>
  33 #endif
  34
  35 #include "error.h"
  36 #include "utility/string.h"
  37 #include "utility/wide_string.h"
  38 #include "window.h"
  39
  40 namespace {
  41 namespace rl {
  42
  43 NC::Window *w;
  44 size_t start_x;
  45 size_t start_y;
  46 size_t width;
  47 bool encrypted;
  48 const char *base;
  49
  50 int read_key(FILE *)
  51 {
  52         size_t x;
  53         bool done;
  54         int result;
  55         do
  56         {
  57                 x = w->getX();
  58                 if (w->runGetStringHelper(rl_line_buffer, &done))
  59                 {
  60                         if (done)
  61                         {
  62                                 rl_done = 1;
  63                                 return 0;
  64                         }
  65                         w->goToXY(x, start_y);
  66                         w->refresh();
  67                 }
  68                 result = w->readKey();
  69                 if (!w->FDCallbacksListEmpty())
  70                 {
  71                         w->goToXY(x, start_y);
  72                         w->refresh();
  73                 }
  74         }
  75         while (result == ERR);
  76         return result;
  77 }
  78
  79 void display_string()
  80 {
  81         auto print_char = [](wchar_t wc) {
  82                 if (encrypted)
  83                         *w << '*';
  84                 else
  85                         *w << wc;
  86         };
  87         auto print_string = [](wchar_t *ws, size_t len) {
  88                 if (encrypted)
  89                         for (size_t i = 0; i < len; ++i)
  90                                 *w << '*';
  91                 else
  92                         *w << ws;
  93         };
  94
  95         char pt = rl_line_buffer[rl_point];
  96         rl_line_buffer[rl_point] = 0;
  97         wchar_t pre_pos[rl_point+1];
  98         pre_pos[mbstowcs(pre_pos, rl_line_buffer, rl_point)] = 0;
  99         rl_line_buffer[rl_point] = pt;
 100
 101         int pos = wcswidth(pre_pos, rl_point);
 102         if (pos < 0)
 103                 pos = rl_point;
 104
 105         mvwhline(w->raw(), start_y, start_x, ' ', width+1);
 106         w->goToXY(start_x, start_y);
 107         if (size_t(pos) <= width)
 108         {
 109                 print_string(pre_pos, pos);
 110
 111                 wchar_t post_pos[rl_end-rl_point+1];
 112                 post_pos[mbstowcs(post_pos, rl_line_buffer+rl_point, rl_end-rl_point)] = 0;
 113
 114                 size_t cpos = pos;
 115                 for (wchar_t *c = post_pos; *c != 0; ++c)
 116                 {
 117                         int n = wcwidth(*c);
 118                         if (n < 0)
 119                         {
 120                                 print_char(L'.');
 121                                 ++cpos;
 122                         }
 123                         else
 124                         {
 125                                 if (cpos+n > width)
 126                                         break;
 127                                 cpos += n;
 128                                 print_char(*c);
 129                         }
 130                 }
 131         }
 132         else
 133         {
 134                 wchar_t *mod_pre_pos = pre_pos;
 135                 while (*mod_pre_pos != 0)
 136                 {
 137                         ++mod_pre_pos;
 138                         int n = wcwidth(*mod_pre_pos);
 139                         if (n < 0)
 140                                 --pos;
 141                         else
 142                                 pos -= n;
 143                         if (size_t(pos) <= width)
 144                                 break;
 145                 }
 146                 print_string(mod_pre_pos, pos);
 147         }
 148         w->goToXY(start_x+pos, start_y);
 149 }
 150
 151 int add_base()
 152 {
 153         rl_insert_text(base);
 154         return 0;
 155 }
 156
 157 }
 158 }
 159
 160 namespace NC {//
 161
 162 std::ostream &operator<<(std::ostream &os, Color c)
 163 {
 164         switch (c)
 165         {
 166                 case Color::Default:
 167                         os << "default";
 168                         break;
 169                 case Color::Black:
 170                         os << "black";
 171                         break;
 172                 case Color::Red:
 173                         os << "red";
 174                         break;
 175                 case Color::Green:
 176                         os << "green";
 177                         break;
 178                 case Color::Yellow:
 179                         os << "yellow";
 180                         break;
 181                 case Color::Blue:
 182                         os << "blue";
 183                         break;
 184                 case Color::Magenta:
 185                         os << "magenta";
 186                         break;
 187                 case Color::Cyan:
 188                         os << "cyan";
 189                         break;
 190                 case Color::White:
 191                         os << "white";
 192                         break;
 193                 case Color::End:
 194                         os << "color_end";
 195                         break;
 196         }
 197         return os;
 198 }
 199
 200 std::istream &operator>>(std::istream &is, Color &c)
 201 {
 202         std::string sc;
 203         is >> sc;
 204         if (sc == "default")
 205                 c = Color::Default;
 206         else if (sc == "black")
 207                 c = Color::Black;
 208         else if (sc == "red")
 209                 c = Color::Red;
 210         else if (sc == "green")
 211                 c = Color::Green;
 212         else if (sc == "yellow")
 213                 c = Color::Yellow;
 214         else if (sc == "blue")
 215                 c = Color::Blue;
 216         else if (sc == "magenta")
 217                 c = Color::Magenta;
 218         else if (sc == "cyan")
 219                 c = Color::Cyan;
 220         else if (sc == "white")
 221                 c = Color::White;
 222         else if (sc == "color_end")
 223                 c = Color::End;
 224         else
 225                 is.setstate(std::ios::failbit);
 226         return is;
 227 }
 228
 229 std::ostream &operator<<(std::ostream &os, Format f)
 230 {
 231         switch (f)
 232         {
 233                 case Format::None:
 234                         os << "none";
 235                         break;
 236                 case Format::Bold:
 237                         os << "bold";
 238                         break;
 239                 case Format::NoBold:
 240                         os << "bold";
 241                         break;
 242                 case Format::Underline:
 243                         os << "underline";
 244                         break;
 245                 case Format::NoUnderline:
 246                         os << "no_underline";
 247                         break;
 248                 case Format::Reverse:
 249                         os << "reverse";
 250                         break;
 251                 case Format::NoReverse:
 252                         os << "no_reverse";
 253                         break;
 254                 case Format::AltCharset:
 255                         os << "alt_charset";
 256                         break;
 257                 case Format::NoAltCharset:
 258                         os << "no_alt_charset";
 259                         break;
 260         }
 261         return os;
 262 }
 263
 264 std::ostream &operator<<(std::ostream &os, Border b)
 265 {
 266         switch (b)
 267         {
 268                 case Border::None:
 269                         os << "none";
 270                         break;
 271                 case Border::Black:
 272                         os << "black";
 273                         break;
 274                 case Border::Red:
 275                         os << "red";
 276                         break;
 277                 case Border::Green:
 278                         os << "green";
 279                         break;
 280                 case Border::Yellow:
 281                         os << "yellow";
 282                         break;
 283                 case Border::Blue:
 284                         os << "blue";
 285                         break;
 286                 case Border::Magenta:
 287                         os << "magenta";
 288                         break;
 289                 case Border::Cyan:
 290                         os << "cyan";
 291                         break;
 292                 case Border::White:
 293                         os << "white";
 294                         break;
 295         }
 296         return os;
 297 }
 298
 299 std::istream &operator>>(std::istream &is, Border &b)
 300 {
 301         std::string sb;
 302         is >> sb;
 303         if (sb == "none")
 304                 b = Border::None;
 305         else if (sb == "black")
 306                 b = Border::Black;
 307         else if (sb == "red")
 308                 b = Border::Red;
 309         else if (sb == "green")
 310                 b = Border::Green;
 311         else if (sb == "yellow")
 312                 b = Border::Yellow;
 313         else if (sb == "blue")
 314                 b = Border::Blue;
 315         else if (sb == "magenta")
 316                 b = Border::Magenta;
 317         else if (sb == "cyan")
 318                 b = Border::Cyan;
 319         else if (sb == "white")
 320                 b = Border::White;
 321         else
 322                 is.setstate(std::ios::failbit);
 323         return is;
 324 }
 325
 326 std::ostream &operator<<(std::ostream &os, Scroll s)
 327 {
 328         switch (s)
 329         {
 330                 case Scroll::Up:
 331                         os << "scroll_up";
 332                         break;
 333                 case Scroll::Down:
 334                         os << "scroll_down";
 335                         break;
 336                 case Scroll::PageUp:
 337                         os << "scroll_page_up";
 338                         break;
 339                 case Scroll::PageDown:
 340                         os << "scroll_page_down";
 341                         break;
 342                 case Scroll::Home:
 343                         os << "scroll_home";
 344                         break;
 345                 case Scroll::End:
 346                         os << "scroll_end";
 347                         break;
 348         }
 349         return os;
 350 }
 351
 352 void initScreen(GNUC_UNUSED const char *window_title, bool enable_colors)
 353 {
 354         const int ColorsTable[] =
 355         {
 356                 COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_YELLOW,
 357                 COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN, COLOR_WHITE
 358         };
 359 #       ifdef XCURSES
 360         Xinitscr(1, const_cast<char **>(&window_title));
 361 #       else
 362         initscr();
 363 #       endif // XCURSES
 364         if (has_colors() && enable_colors)
 365         {
 366                 start_color();
 367                 use_default_colors();
 368                 int num = 1;
 369 #               ifdef USE_PDCURSES
 370                 int i = 0;
 371 #               else
 372                 int i = -1;
 373 #               endif // USE_PDCURSES
 374                 for (; i < 8; ++i)
 375                         for (int j = 0; j < 8; ++j)
 376                                 init_pair(num++, ColorsTable[j], i < 0 ? i : ColorsTable[i]);
 377         }
 378         noecho();
 379         cbreak();
 380         curs_set(0);
 381
 382         rl_initialize();
 383         // disable autocompletion
 384         rl_bind_key('\t', nullptr);
 385         // overwrite readline callbacks
 386         rl_getc_function = rl::read_key;
 387         rl_redisplay_function = rl::display_string;
 388         rl_startup_hook = rl::add_base;
 389 }
 390
 391 void destroyScreen()
 392 {
 393         curs_set(1);
 394         endwin();
 395 }
 396
 397 Window::Window(size_t startx,
 398                 size_t starty,
 399                 size_t width,
 400                 size_t height,
 401                 const std::string &title,
 402                 Color color,
 403                 Border border)
 404                 : m_window(0),
 405                 m_border_window(0),
 406                 m_start_x(startx),
 407                 m_start_y(starty),
 408                 m_width(width),
 409                 m_height(height),
 410                 m_window_timeout(-1),
 411                 m_color(color),
 412                 m_bg_color(Color::Default),
 413                 m_base_color(color),
 414                 m_base_bg_color(Color::Default),
 415                 m_border(border),
 416                 m_get_string_helper(0),
 417                 m_title(title),
 418                 m_bold_counter(0),
 419                 m_underline_counter(0),
 420                 m_reverse_counter(0),
 421                 m_alt_charset_counter(0)
 422 {
 423         if (m_start_x > size_t(COLS)
 424         ||  m_start_y > size_t(LINES)
 425         ||  m_width+m_start_x > size_t(COLS)
 426         ||  m_height+m_start_y > size_t(LINES))
 427                 FatalError("Constructed window is bigger than terminal size");
 428
 429         if (m_border != Border::None)
 430         {
 431                 m_border_window = newpad(m_height, m_width);
 432                 wattron(m_border_window, COLOR_PAIR(int(m_border)));
 433                 box(m_border_window, 0, 0);
 434                 m_start_x++;
 435                 m_start_y++;
 436                 m_width -= 2;
 437                 m_height -= 2;
 438         }
 439         if (!m_title.empty())
 440         {
 441                 m_start_y += 2;
 442                 m_height -= 2;
 443         }
 444
 445         m_window = newpad(m_height, m_width);
 446
 447         setColor(m_color);
 448         keypad(m_window, 1);
 449 }
 450
 451 Window::Window(const Window &rhs)
 452 : m_window(dupwin(rhs.m_window))
 453 , m_border_window(dupwin(rhs.m_border_window))
 454 , m_start_x(rhs.m_start_x)
 455 , m_start_y(rhs.m_start_y)
 456 , m_width(rhs.m_width)
 457 , m_height(rhs.m_height)
 458 , m_window_timeout(rhs.m_window_timeout)
 459 , m_color(rhs.m_color)
 460 , m_bg_color(rhs.m_bg_color)
 461 , m_base_color(rhs.m_base_color)
 462 , m_base_bg_color(rhs.m_base_bg_color)
 463 , m_border(rhs.m_border)
 464 , m_get_string_helper(rhs.m_get_string_helper)
 465 , m_title(rhs.m_title)
 466 , m_color_stack(rhs.m_color_stack)
 467 , m_input_queue(rhs.m_input_queue)
 468 , m_fds(rhs.m_fds)
 469 , m_bold_counter(rhs.m_bold_counter)
 470 , m_underline_counter(rhs.m_underline_counter)
 471 , m_reverse_counter(rhs.m_reverse_counter)
 472 , m_alt_charset_counter(rhs.m_alt_charset_counter)
 473 {
 474 }
 475
 476 Window::Window(Window &&rhs)
 477 : m_window(rhs.m_window)
 478 , m_border_window(rhs.m_border_window)
 479 , m_start_x(rhs.m_start_x)
 480 , m_start_y(rhs.m_start_y)
 481 , m_width(rhs.m_width)
 482 , m_height(rhs.m_height)
 483 , m_window_timeout(rhs.m_window_timeout)
 484 , m_color(rhs.m_color)
 485 , m_bg_color(rhs.m_bg_color)
 486 , m_base_color(rhs.m_base_color)
 487 , m_base_bg_color(rhs.m_base_bg_color)
 488 , m_border(rhs.m_border)
 489 , m_get_string_helper(rhs.m_get_string_helper)
 490 , m_title(std::move(rhs.m_title))
 491 , m_color_stack(std::move(rhs.m_color_stack))
 492 , m_input_queue(std::move(rhs.m_input_queue))
 493 , m_fds(std::move(rhs.m_fds))
 494 , m_bold_counter(rhs.m_bold_counter)
 495 , m_underline_counter(rhs.m_underline_counter)
 496 , m_reverse_counter(rhs.m_reverse_counter)
 497 , m_alt_charset_counter(rhs.m_alt_charset_counter)
 498 {
 499         rhs.m_window = 0;
 500         rhs.m_border_window = 0;
 501 }
 502
 503 Window &Window::operator=(Window rhs)
 504 {
 505         std::swap(m_window, rhs.m_window);
 506         std::swap(m_border_window, rhs.m_border_window);
 507         std::swap(m_start_x, rhs.m_start_x);
 508         std::swap(m_start_y, rhs.m_start_y);
 509         std::swap(m_width, rhs.m_width);
 510         std::swap(m_height, rhs.m_height);
 511         std::swap(m_window_timeout, rhs.m_window_timeout);
 512         std::swap(m_color, rhs.m_color);
 513         std::swap(m_bg_color, rhs.m_bg_color);
 514         std::swap(m_base_color, rhs.m_base_color);
 515         std::swap(m_base_bg_color, rhs.m_base_bg_color);
 516         std::swap(m_border, rhs.m_border);
 517         std::swap(m_get_string_helper, rhs.m_get_string_helper);
 518         std::swap(m_title, rhs.m_title);
 519         std::swap(m_color_stack, rhs.m_color_stack);
 520         std::swap(m_input_queue, rhs.m_input_queue);
 521         std::swap(m_fds, rhs.m_fds);
 522         std::swap(m_bold_counter, rhs.m_bold_counter);
 523         std::swap(m_underline_counter, rhs.m_underline_counter);
 524         std::swap(m_reverse_counter, rhs.m_reverse_counter);
 525         std::swap(m_alt_charset_counter, rhs.m_alt_charset_counter);
 526         return *this;
 527 }
 528
 529 Window::~Window()
 530 {
 531         delwin(m_window);
 532         delwin(m_border_window);
 533 }
 534
 535 void Window::setColor(Color fg, Color bg)
 536 {
 537         if (fg == Color::Default)
 538                 fg = m_base_color;
 539
 540         if (fg != Color::Default)
 541                 wattron(m_window, COLOR_PAIR(int(bg)*8+int(fg)));
 542         else
 543                 wattroff(m_window, COLOR_PAIR(int(m_color)));
 544         m_color = fg;
 545         m_bg_color = bg;
 546 }
 547
 548 void Window::setBaseColor(Color fg, Color bg)
 549 {
 550         m_base_color = fg;
 551         m_base_bg_color = bg;
 552 }
 553
 554 void Window::setBorder(Border border)
 555 {
 556         if (border == Border::None && m_border != Border::None)
 557         {
 558                 delwin(m_border_window);
 559                 m_start_x--;
 560                 m_start_y--;
 561                 m_height += 2;
 562                 m_width += 2;
 563                 recreate(m_width, m_height);
 564         }
 565         else if (border != Border::None && m_border == Border::None)
 566         {
 567                 m_border_window = newpad(m_height, m_width);
 568                 wattron(m_border_window, COLOR_PAIR(int(border)));
 569                 box(m_border_window,0,0);
 570                 m_start_x++;
 571                 m_start_y++;
 572                 m_height -= 2;
 573                 m_width -= 2;
 574                 recreate(m_width, m_height);
 575         }
 576         else
 577         {
 578                 wattron(m_border_window,COLOR_PAIR(int(border)));
 579                 box(m_border_window, 0, 0);
 580         }
 581         m_border = border;
 582 }
 583
 584 void Window::setTitle(const std::string &new_title)
 585 {
 586         if (m_title == new_title)
 587         {
 588                 return;
 589         }
 590         else if (!new_title.empty() && m_title.empty())
 591         {
 592                 m_start_y += 2;
 593                 m_height -= 2;
 594                 recreate(m_width, m_height);
 595         }
 596         else if (new_title.empty() && !m_title.empty())
 597         {
 598                 m_start_y -= 2;
 599                 m_height += 2;
 600                 recreate(m_width, m_height);
 601         }
 602         m_title = new_title;
 603 }
 604
 605 void Window::recreate(size_t width, size_t height)
 606 {
 607         delwin(m_window);
 608         m_window = newpad(height, width);
 609         setTimeout(m_window_timeout);
 610         setColor(m_color, m_bg_color);
 611         keypad(m_window, 1);
 612 }
 613
 614 void Window::moveTo(size_t new_x, size_t new_y)
 615 {
 616         m_start_x = new_x;
 617         m_start_y = new_y;
 618         if (m_border != Border::None)
 619         {
 620                 m_start_x++;
 621                 m_start_y++;
 622         }
 623         if (!m_title.empty())
 624                 m_start_y += 2;
 625 }
 626
 627 void Window::adjustDimensions(size_t width, size_t height)
 628 {
 629         if (m_border != Border::None)
 630         {
 631                 delwin(m_border_window);
 632                 m_border_window = newpad(height, width);
 633                 wattron(m_border_window, COLOR_PAIR(int(m_border)));
 634                 box(m_border_window, 0, 0);
 635                 width -= 2;
 636                 height -= 2;
 637         }
 638         if (!m_title.empty())
 639                 height -= 2;
 640         m_height = height;
 641         m_width = width;
 642 }
 643
 644 void Window::resize(size_t new_width, size_t new_height)
 645 {
 646         adjustDimensions(new_width, new_height);
 647         recreate(m_width, m_height);
 648 }
 649
 650 void Window::showBorder() const
 651 {
 652         if (m_border != Border::None)
 653         {
 654                 ::refresh();
 655                 prefresh(m_border_window, 0, 0, getStarty(), getStartX(), m_start_y+m_height, m_start_x+m_width);
 656         }
 657         if (!m_title.empty())
 658         {
 659                 if (m_border != Border::None)
 660                         attron(COLOR_PAIR(int(m_border)));
 661                 else
 662                         attron(COLOR_PAIR(int(m_base_color)));
 663                 mvhline(m_start_y-1, m_start_x, 0, m_width);
 664                 attron(A_BOLD);
 665                 mvhline(m_start_y-2, m_start_x, 32, m_width); // clear title line
 666                 mvaddstr(m_start_y-2, m_start_x, m_title.c_str());
 667                 attroff(COLOR_PAIR(int(m_border)) | A_BOLD);
 668         }
 669         ::refresh();
 670 }
 671
 672 void Window::display()
 673 {
 674         showBorder();
 675         refresh();
 676 }
 677
 678 void Window::refresh()
 679 {
 680         prefresh(m_window, 0, 0, m_start_y, m_start_x, m_start_y+m_height-1, m_start_x+m_width-1);
 681 }
 682
 683 void Window::clear()
 684 {
 685         werase(m_window);
 686 }
 687
 688 void Window::bold(bool bold_state) const
 689 {
 690         (bold_state ? wattron : wattroff)(m_window, A_BOLD);
 691 }
 692
 693 void Window::underline(bool underline_state) const
 694 {
 695         (underline_state ? wattron : wattroff)(m_window, A_UNDERLINE);
 696 }
 697
 698 void Window::reverse(bool reverse_state) const
 699 {
 700         (reverse_state ? wattron : wattroff)(m_window, A_REVERSE);
 701 }
 702
 703 void Window::altCharset(bool altcharset_state) const
 704 {
 705         (altcharset_state ? wattron : wattroff)(m_window, A_ALTCHARSET);
 706 }
 707
 708 void Window::setTimeout(int timeout)
 709 {
 710         if (timeout != m_window_timeout)
 711         {
 712                 m_window_timeout = timeout;
 713                 wtimeout(m_window, timeout);
 714         }
 715 }
 716
 717 void Window::addFDCallback(int fd, void (*callback)())
 718 {
 719         m_fds.push_back(std::make_pair(fd, callback));
 720 }
 721
 722 void Window::clearFDCallbacksList()
 723 {
 724         m_fds.clear();
 725 }
 726
 727 bool Window::FDCallbacksListEmpty() const
 728 {
 729         return m_fds.empty();
 730 }
 731
 732 int Window::readKey()
 733 {
 734         int result;
 735         // if there are characters in input queue, get them and
 736         // return immediately.
 737         if (!m_input_queue.empty())
 738         {
 739                 result = m_input_queue.front();
 740                 m_input_queue.pop();
 741                 return result;
 742         }
 743         // in pdcurses polling stdin doesn't work, so we can't poll
 744         // both stdin and other file descriptors in one select. the
 745         // workaround is to set the timeout of select to 0, poll
 746         // other file descriptors and then wait for stdin input with
 747         // the given timeout. unfortunately, this results in delays
 748         // since ncmpcpp doesn't see that data arrived while waiting
 749         // for input from stdin, but it seems there is no better option.
 750
 751         fd_set fdset;
 752         FD_ZERO(&fdset);
 753 #       if !defined(USE_PDCURSES)
 754         FD_SET(STDIN_FILENO, &fdset);
 755         timeval timeout = { m_window_timeout/1000, (m_window_timeout%1000)*1000 };
 756 #       else
 757         timeval timeout = { 0, 0 };
 758 #       endif
 759
 760         int fd_max = STDIN_FILENO;
 761         for (FDCallbacks::const_iterator it = m_fds.begin(); it != m_fds.end(); ++it)
 762         {
 763                 if (it->first > fd_max)
 764                         fd_max = it->first;
 765                 FD_SET(it->first, &fdset);
 766         }
 767
 768         if (select(fd_max+1, &fdset, 0, 0, m_window_timeout < 0 ? 0 : &timeout) > 0)
 769         {
 770 #               if !defined(USE_PDCURSES)
 771                 result = FD_ISSET(STDIN_FILENO, &fdset) ? wgetch(m_window) : ERR;
 772 #               endif // !USE_PDCURSES
 773                 for (FDCallbacks::const_iterator it = m_fds.begin(); it != m_fds.end(); ++it)
 774                         if (FD_ISSET(it->first, &fdset))
 775                                 it->second();
 776         }
 777 #       if !defined(USE_PDCURSES)
 778         else
 779                 result = ERR;
 780 #       else
 781         result = wgetch(m_window);
 782 #       endif
 783         return result;
 784 }
 785
 786 void Window::pushChar(int ch)
 787 {
 788         m_input_queue.push(ch);
 789 }
 790
 791 std::string Window::getString(const std::string &base, size_t width, bool encrypted)
 792 {
 793         rl::w = this;
 794         getyx(m_window, rl::start_y, rl::start_x);
 795         rl::width = width;
 796         rl::encrypted = encrypted;
 797         rl::base = base.c_str();
 798
 799         width--;
 800         if (width == size_t(-1))
 801                 rl::width = m_width-rl::start_x-1;
 802         else
 803                 rl::width = width;
 804
 805         mmask_t oldmask;
 806         std::string result;
 807
 808         curs_set(1);
 809         keypad(m_window, 0);
 810         mousemask(0, &oldmask);
 811         char *input = readline(nullptr);
 812         mousemask(oldmask, nullptr);
 813         keypad(m_window, 1);
 814         curs_set(0);
 815         if (input != nullptr)
 816         {
 817                 if (input[0] != 0)
 818                         add_history(input);
 819                 result = input;
 820                 free(input);
 821         }
 822
 823         return result;
 824 }
 825
 826 void Window::goToXY(int x, int y)
 827 {
 828         wmove(m_window, y, x);
 829 }
 830
 831 int Window::getX()
 832 {
 833         return getcurx(m_window);
 834 }
 835
 836 int Window::getY()
 837 {
 838         return getcury(m_window);
 839 }
 840
 841 bool Window::hasCoords(int &x, int &y)
 842 {
 843 #       ifndef USE_PDCURSES
 844         return wmouse_trafo(m_window, &y, &x, 0);
 845 #       else
 846         // wmouse_trafo is broken in pdcurses, use our own implementation
 847         size_t u_x = x, u_y = y;
 848         if (u_x >= m_start_x && u_x < m_start_x+m_width
 849         &&  u_y >= m_start_y && u_y < m_start_y+m_height)
 850         {
 851                 x -= m_start_x;
 852                 y -= m_start_y;
 853                 return true;
 854         }
 855         return false;
 856 #       endif
 857 }
 858
 859 bool Window::runGetStringHelper(const char *arg, bool *done) const
 860 {
 861         if (m_get_string_helper)
 862         {
 863                 bool continue_ = m_get_string_helper(arg);
 864                 if (done != nullptr)
 865                         *done = !continue_;
 866                 return true;
 867         }
 868         else
 869                 return false;
 870 }
 871
 872 size_t Window::getWidth() const
 873 {
 874         if (m_border != Border::None)
 875                 return m_width+2;
 876         else
 877                 return m_width;
 878 }
 879
 880 size_t Window::getHeight() const
 881 {
 882         size_t height = m_height;
 883         if (m_border != Border::None)
 884                 height += 2;
 885         if (!m_title.empty())
 886                 height += 2;
 887         return height;
 888 }
 889
 890 size_t Window::getStartX() const
 891 {
 892         if (m_border != Border::None)
 893                 return m_start_x-1;
 894         else
 895                 return m_start_x;
 896 }
 897
 898 size_t Window::getStarty() const
 899 {
 900         size_t starty = m_start_y;
 901         if (m_border != Border::None)
 902                 starty--;
 903         if (!m_title.empty())
 904                 starty -= 2;
 905         return starty;
 906 }
 907
 908 const std::string &Window::getTitle() const
 909 {
 910         return m_title;
 911 }
 912
 913 Color Window::getColor() const
 914 {
 915         return m_color;
 916 }
 917
 918 Border Window::getBorder() const
 919 {
 920         return m_border;
 921 }
 922
 923 int Window::getTimeout() const
 924 {
 925         return m_window_timeout;
 926 }
 927
 928 void Window::scroll(Scroll where)
 929 {
 930         idlok(m_window, 1);
 931         scrollok(m_window, 1);
 932         switch (where)
 933         {
 934                 case Scroll::Up:
 935                         wscrl(m_window, 1);
 936                         break;
 937                 case Scroll::Down:
 938                         wscrl(m_window, -1);
 939                         break;
 940                 case Scroll::PageUp:
 941                         wscrl(m_window, m_width);
 942                         break;
 943                 case Scroll::PageDown:
 944                         wscrl(m_window, -m_width);
 945                         break;
 946                 default:
 947                         break;
 948         }
 949         idlok(m_window, 0);
 950         scrollok(m_window, 0);
 951 }
 952
 953
 954 Window &Window::operator<<(Colors colors)
 955 {
 956         if (colors.fg == Color::End || colors.bg == Color::End)
 957         {
 958                 *this << Color::End;
 959                 return *this;
 960         }
 961         m_color_stack.push(colors);
 962         setColor(colors.fg, colors.bg);
 963         return *this;
 964 }
 965
 966 Window &Window::operator<<(Color color)
 967 {
 968         switch (color)
 969         {
 970                 case Color::Default:
 971                         while (!m_color_stack.empty())
 972                                 m_color_stack.pop();
 973                         setColor(m_base_color, m_base_bg_color);
 974                         break;
 975                 case Color::End:
 976                         if (!m_color_stack.empty())
 977                                 m_color_stack.pop();
 978                         if (!m_color_stack.empty())
 979                                 setColor(m_color_stack.top().fg, m_color_stack.top().bg);
 980                         else
 981                                 setColor(m_base_color, m_base_bg_color);
 982                         break;
 983                 default:
 984                         Color bg;
 985                         if (m_color_stack.empty())
 986                                 bg = m_bg_color;
 987                         else
 988                                 bg = m_color_stack.top().bg;
 989                         m_color_stack.push(Colors(color, bg));
 990                         setColor(m_color_stack.top().fg, m_color_stack.top().bg);
 991         }
 992         return *this;
 993 }
 994
 995 Window &Window::operator<<(Format format)
 996 {
 997         switch (format)
 998         {
 999                 case Format::None:
1000                         bold((m_bold_counter = 0));
1001                         reverse((m_reverse_counter = 0));
1002                         altCharset((m_alt_charset_counter = 0));
1003                         break;
1004                 case Format::Bold:
1005                         bold(++m_bold_counter);
1006                         break;
1007                 case Format::NoBold:
1008                         if (--m_bold_counter <= 0)
1009                                 bold((m_bold_counter = 0));
1010                         break;
1011                 case Format::Underline:
1012                         underline(++m_underline_counter);
1013                         break;
1014                 case Format::NoUnderline:
1015                         if (--m_underline_counter <= 0)
1016                                 underline((m_underline_counter = 0));
1017                         break;
1018                 case Format::Reverse:
1019                         reverse(++m_reverse_counter);
1020                         break;
1021                 case Format::NoReverse:
1022                         if (--m_reverse_counter <= 0)
1023                                 reverse((m_reverse_counter = 0));
1024                         break;
1025                 case Format::AltCharset:
1026                         altCharset(++m_alt_charset_counter);
1027                         break;
1028                 case Format::NoAltCharset:
1029                         if (--m_alt_charset_counter <= 0)
1030                                 altCharset((m_alt_charset_counter = 0));
1031                         break;
1032         }
1033         return *this;
1034 }
1035
1036 Window &Window::operator<<(int (*f)(WINDOW *))
1037 {
1038         f(m_window);
1039         return *this;
1040 }
1041
1042 Window &Window::operator<<(XY coords)
1043 {
1044         goToXY(coords.x, coords.y);
1045         return *this;
1046 }
1047
1048 Window &Window::operator<<(const char *s)
1049 {
1050         for (const char *c = s; *c != '\0'; ++c)
1051                 wprintw(m_window, "%c", *c);
1052         return *this;
1053 }
1054
1055 Window &Window::operator<<(char c)
1056 {
1057         wprintw(m_window, "%c", c);
1058         return *this;
1059 }
1060
1061 Window &Window::operator<<(const wchar_t *ws)
1062 {
1063         for (const wchar_t *wc = ws; *wc != L'\0'; ++wc)
1064                 wprintw(m_window, "%lc", *wc);
1065         return *this;
1066 }
1067
1068 Window &Window::operator<<(wchar_t wc)
1069 {
1070         wprintw(m_window, "%lc", wc);
1071         return *this;
1072 }
1073
1074 Window &Window::operator<<(int i)
1075 {
1076         wprintw(m_window, "%d", i);
1077         return *this;
1078 }
1079
1080 Window &Window::operator<<(double d)
1081 {
1082         wprintw(m_window, "%f", d);
1083         return *this;
1084 }
1085
1086 Window &Window::operator<<(const std::string &s)
1087 {
1088         // for some reason passing whole string at once with "%s" doesn't work
1089         // (string is cut in the middle, probably due to limitation of ncurses'
1090         // internal buffer?), so we need to pass characters in a loop.
1091         for (auto it = s.begin(); it != s.end(); ++it)
1092                 wprintw(m_window, "%c", *it);
1093         return *this;
1094 }
1095
1096 Window &Window::operator<<(const std::wstring &ws)
1097 {
1098         for (auto it = ws.begin(); it != ws.end(); ++it)
1099                 wprintw(m_window, "%lc", *it);
1100         return *this;
1101 }
1102
1103 Window &Window::operator<<(size_t s)
1104 {
1105         wprintw(m_window, "%zu", s);
1106         return *this;
1107 }
1108
1109 }