path: root/070display.cc

//: Take charge of the text-mode display and console.

:(before "End Globals")
// uncomment to debug console programs
//? ofstream LOG("log.txt");

//:: Display management

:(before "End Globals")
long long int Display_row = 0, Display_column = 0;

:(before "End Primitive Recipe Declarations")
OPEN_CONSOLE,
:(before "End Primitive Recipe Numbers")
Recipe_number["open-console"] = OPEN_CONSOLE;
//? cerr << "open-console: " << OPEN_CONSOLE << '\n'; //? 1
:(before "End Primitive Recipe Implementations")
case OPEN_CONSOLE: {
  tb_init();
  Display_row = Display_column = 0;
  break;
}

:(before "End Primitive Recipe Declarations")
CLOSE_CONSOLE,
:(before "End Primitive Recipe Numbers")
Recipe_number["close-console"] = CLOSE_CONSOLE;
:(before "End Primitive Recipe Implementations")
case CLOSE_CONSOLE: {
  tb_shutdown();
//?   Trace_stream->dump_layer = "all"; //? 1
  break;
}

:(before "End Teardown")
tb_shutdown();

:(before "End Primitive Recipe Declarations")
CLEAR_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["clear-display"] = CLEAR_DISPLAY;
:(before "End Primitive Recipe Implementations")
case CLEAR_DISPLAY: {
  tb_clear();
  Display_row = Display_column = 0;
  break;
}

:(before "End Primitive Recipe Declarations")
CLEAR_LINE_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["clear-line-on-display"] = CLEAR_LINE_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case CLEAR_LINE_ON_DISPLAY: {
  long long int width = tb_width();
  for (long long int x = Display_column; x < width; ++x) {
    tb_change_cell(x, Display_row, ' ', TB_WHITE, TB_BLACK);
  }
  tb_set_cursor(Display_column, Display_row);
  tb_present();
  break;
}

:(before "End Primitive Recipe Declarations")
PRINT_CHARACTER_TO_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["print-character-to-display"] = PRINT_CHARACTER_TO_DISPLAY;
:(before "End Primitive Recipe Implementations")
case PRINT_CHARACTER_TO_DISPLAY: {
  int h=tb_height(), w=tb_width();
  long long int height = (h >= 0) ? h : 0;
  long long int width = (w >= 0) ? w : 0;
  assert(scalar(ingredients.at(0)));
  long long int c = ingredients.at(0).at(0);
//?   tb_shutdown(); //? 1
//?   cerr << "AAA " << c << ' ' << (int)'\n' << ' ' << (int)'\r' << '\n'; //? 1
//?   exit(1); //? 1
  if (c == '\n' || c == '\r') {
    if (Display_row < height-1) {
      Display_column = 0;
      ++Display_row;
      tb_set_cursor(Display_column, Display_row);
      tb_present();
    }
    break;
  }
  if (c == '\b') {
    if (Display_column > 0) {
      tb_change_cell(Display_column-1, Display_row, ' ', TB_WHITE, TB_BLACK);
      --Display_column;
      tb_set_cursor(Display_column, Display_row);
      tb_present();
    }
    break;
  }
  int color = TB_BLACK;
  if (SIZE(ingredients) > 1) {
    assert(scalar(ingredients.at(1)));
    color = ingredients.at(1).at(0);
//?     tb_shutdown(); //? 1
//?     cerr << "AAA " << color << '\n'; //? 1
//?     exit(1); //? 1
  }
  tb_change_cell(Display_column, Display_row, c, color, TB_BLACK);
  if (Display_column < width-1) {
    ++Display_column;
    tb_set_cursor(Display_column, Display_row);
  }
  tb_present();
  break;
}

:(before "End Primitive Recipe Declarations")
CURSOR_POSITION_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["cursor-position-on-display"] = CURSOR_POSITION_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case CURSOR_POSITION_ON_DISPLAY: {
  products.resize(2);
  products.at(0).push_back(Display_row);
  products.at(1).push_back(Display_column);
  break;
}

:(before "End Primitive Recipe Declarations")
MOVE_CURSOR_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["move-cursor-on-display"] = MOVE_CURSOR_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case MOVE_CURSOR_ON_DISPLAY: {
  assert(scalar(ingredients.at(0)));
  Display_row = ingredients.at(0).at(0);
  assert(scalar(ingredients.at(1)));
  Display_column = ingredients.at(1).at(0);
  tb_set_cursor(Display_column, Display_row);
  tb_present();
  break;
}

:(before "End Primitive Recipe Declarations")
MOVE_CURSOR_DOWN_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["move-cursor-down-on-display"] = MOVE_CURSOR_DOWN_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case MOVE_CURSOR_DOWN_ON_DISPLAY: {
  int h=tb_height();
  long long int height = (h >= 0) ? h : 0;
  if (Display_row < height-1) {
    Display_row++;
    tb_set_cursor(Display_column, Display_row);
    tb_present();
  }
  break;
}

:(before "End Primitive Recipe Declarations")
MOVE_CURSOR_UP_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["move-cursor-up-on-display"] = MOVE_CURSOR_UP_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case MOVE_CURSOR_UP_ON_DISPLAY: {
  if (Display_row > 0) {
    Display_row--;
    tb_set_cursor(Display_column, Display_row);
    tb_present();
  }
  break;
}

:(before "End Primitive Recipe Declarations")
MOVE_CURSOR_RIGHT_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["move-cursor-right-on-display"] = MOVE_CURSOR_RIGHT_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case MOVE_CURSOR_RIGHT_ON_DISPLAY: {
  int w=tb_width();
  long long int width = (w >= 0) ? w : 0;
  if (Display_column < width-1) {
    Display_column++;
    tb_set_cursor(Display_column, Display_row);
    tb_present();
  }
  break;
}

:(before "End Primitive Recipe Declarations")
MOVE_CURSOR_LEFT_ON_DISPLAY,
:(before "End Primitive Recipe Numbers")
Recipe_number["move-cursor-left-on-display"] = MOVE_CURSOR_LEFT_ON_DISPLAY;
:(before "End Primitive Recipe Implementations")
case MOVE_CURSOR_LEFT_ON_DISPLAY: {
  if (Display_column > 0) {
    Display_column--;
    tb_set_cursor(Display_column, Display_row);
    tb_present();
  }
  break;
}

:(before "End Primitive Recipe Declarations")
DISPLAY_WIDTH,
:(before "End Primitive Recipe Numbers")
Recipe_number["display-width"] = DISPLAY_WIDTH;
:(before "End Primitive Recipe Implementations")
case DISPLAY_WIDTH: {
  products.resize(1);
  products.at(0).push_back(tb_width());
  break;
}

:(before "End Primitive Recipe Declarations")
DISPLAY_HEIGHT,
:(before "End Primitive Recipe Numbers")
Recipe_number["display-height"] = DISPLAY_HEIGHT;
:(before "End Primitive Recipe Implementations")
case DISPLAY_HEIGHT: {
  products.resize(1);
  products.at(0).push_back(tb_height());
  break;
}

//:: Keyboard/mouse management

:(before "End Primitive Recipe Declarations")
WAIT_FOR_SOME_INTERACTION,
:(before "End Primitive Recipe Numbers")
Recipe_number["wait-for-some-interaction"] = WAIT_FOR_SOME_INTERACTION;
:(before "End Primitive Recipe Implementations")
case WAIT_FOR_SOME_INTERACTION: {
  tb_event event;
  tb_poll_event(&event);
  break;
}

:(before "End Primitive Recipe Declarations")
CHECK_FOR_INTERACTION,
:(before "End Primitive Recipe Numbers")
Recipe_number["check-for-interaction"] = CHECK_FOR_INTERACTION;
:(before "End Primitive Recipe Implementations")
case CHECK_FOR_INTERACTION: {
  products.resize(2);  // result and status
  tb_event event;
  int event_type = tb_peek_event(&event, 5/*ms*/);
  if (event_type == TB_EVENT_KEY && event.ch) {
    products.at(0).push_back(/*text event*/0);
    products.at(0).push_back(event.ch);
    products.at(0).push_back(0);
    products.at(0).push_back(0);
    products.at(1).push_back(/*found*/true);
    break;
  }
  // treat keys within ascii as unicode characters
  if (event_type == TB_EVENT_KEY && event.key < 0xff) {
    products.at(0).push_back(/*text event*/0);
    if (event.key == TB_KEY_CTRL_C) tb_shutdown(), exit(1);
    if (event.key == TB_KEY_BACKSPACE2) event.key = TB_KEY_BACKSPACE;
    if (event.key == TB_KEY_CARRIAGE_RETURN) event.key = TB_KEY_NEWLINE;
    products.at(0).push_back(event.key);
    products.at(0).push_back(0);
    products.at(0).push_back(0);
    products.at(1).push_back(/*found*/true);
    break;
  }
  // keys outside ascii aren't unicode characters but arbitrary termbox inventions
  if (event_type == TB_EVENT_KEY) {
    products.at(0).push_back(/*keycode event*/1);
    products.at(0).push_back(event.key);
    products.at(0).push_back(0);
    products.at(0).push_back(0);
    products.at(1).push_back(/*found*/true);
    break;
  }
  if (event_type == TB_EVENT_MOUSE) {
    products.at(0).push_back(/*mouse event*/1);
    products.at(0).push_back(event.key);  // which button, etc.
    products.at(0).push_back(event.y);  // row
    products.at(0).push_back(event.x);  // column
    products.at(1).push_back(/*found*/true);
    break;
  }
  // ignore TB_EVENT_RESIZE events for now
  products.at(0).push_back(0);
  products.at(0).push_back(0);
  products.at(0).push_back(0);
  products.at(0).push_back(0);
  products.at(1).push_back(/*found*/false);
  break;
}