def draw_frame(canvas: curses.window,
start_row: int,
start_column: int,
text: str,
negative: bool = False):
"""Draw multiline text fragment on canvas. Erase text instead of drawing if negative=True is specified."""
rows_number, columns_number = canvas.getmaxyx()
for row, line in enumerate(text.splitlines(), round(start_row)):
if row < 0:
continue
if row >= rows_number:
break
for column, symbol in enumerate(line, round(start_column)):
if column < 0:
continue
if column >= columns_number:
break
if symbol == " ":
continue
# Check that current position it is not in a lower right corner of the window
# Curses will raise exception in that case. Don`t ask why…
# https://docs.python.org/3/library/curses.html#curses.window.addch
if row == rows_number - 1 and column == columns_number - 1:
continue
symbol = symbol if not negative else " "
canvas.addch(row, column, symbol)
def input_str(y, x, scr: c.window, max_len=0, prompt=''):
res = ''
len_count = 0
if prompt:
scr.addstr(y, x, prompt)
if max_len > 0:
scr.addstr(y + int(bool(prompt)), x, '_' * max_len)
while True:
char = scr.get_wch()
if char == '\n':
break
elif char in ('\b', '\x7f'):
if len_count > 0:
res = res[:-1]
scr.addch(y + int(bool(prompt)), x + len_count - 1, '_')
scr.refresh()
len_count -= 1
elif len(char) == 1:
res += char
scr.addch(y + int(bool(prompt)), x + len_count, char)
scr.refresh()
len_count += 1
if 0 < max_len <= len_count:
break
return res