92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
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import sys,os
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import curses
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def draw_menu(stdscr):
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k = 0
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cursor_x = 0
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cursor_y = 0
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# Clear and refresh the screen for a blank canvas
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stdscr.clear()
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stdscr.refresh()
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# Start colors in curses
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curses.start_color()
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curses.init_pair(1, curses.COLOR_CYAN, curses.COLOR_BLACK)
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curses.init_pair(2, curses.COLOR_RED, curses.COLOR_BLACK)
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curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_WHITE)
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# Loop where k is the last character pressed
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while (k != ord('q')):
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# Initialization
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stdscr.clear()
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height, width = stdscr.getmaxyx()
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if k == curses.KEY_DOWN:
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cursor_y = cursor_y + 1
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elif k == curses.KEY_UP:
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cursor_y = cursor_y - 1
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elif k == curses.KEY_RIGHT:
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cursor_x = cursor_x + 1
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elif k == curses.KEY_LEFT:
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cursor_x = cursor_x - 1
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cursor_x = max(0, cursor_x)
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cursor_x = min(width-1, cursor_x)
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cursor_y = max(0, cursor_y)
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cursor_y = min(height-1, cursor_y)
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# Declaration of strings
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title = "Curses example"[:width-1]
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subtitle = "Written by Clay McLeod"[:width-1]
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keystr = "Last key pressed: {}".format(k)[:width-1]
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statusbarstr = "Press 'q' to exit | STATUS BAR | Pos: {}, {}".format(cursor_x, cursor_y)
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if k == 0:
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keystr = "No key press detected..."[:width-1]
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# Centering calculations
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start_x_title = int((width // 2) - (len(title) // 2) - len(title) % 2)
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start_x_subtitle = int((width // 2) - (len(subtitle) // 2) - len(subtitle) % 2)
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start_x_keystr = int((width // 2) - (len(keystr) // 2) - len(keystr) % 2)
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start_y = int((height // 2) - 2)
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# Rendering some text
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whstr = "Width: {}, Height: {}".format(width, height)
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stdscr.addstr(0, 0, whstr, curses.color_pair(1))
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# Render status bar
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stdscr.attron(curses.color_pair(3))
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stdscr.addstr(height-1, 0, statusbarstr)
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stdscr.addstr(height-1, len(statusbarstr), " " * (width - len(statusbarstr) - 1))
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stdscr.attroff(curses.color_pair(3))
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# Turning on attributes for title
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stdscr.attron(curses.color_pair(2))
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stdscr.attron(curses.A_BOLD)
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# Rendering title
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stdscr.addstr(start_y, start_x_title, title)
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# Turning off attributes for title
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stdscr.attroff(curses.color_pair(2))
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stdscr.attroff(curses.A_BOLD)
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# Print rest of text
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stdscr.addstr(start_y + 1, start_x_subtitle, subtitle)
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stdscr.addstr(start_y + 3, (width // 2) - 2, '-' * 4)
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stdscr.addstr(start_y + 5, start_x_keystr, keystr)
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stdscr.move(cursor_y, cursor_x)
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# Refresh the screen
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stdscr.refresh()
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# Wait for next input
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k = stdscr.getch()
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def main():
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curses.wrapper(draw_menu)
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if __name__ == "__main__":
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main()
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