(04-13-2017, 08:19 PM)ProfessorChill Wrote: Okay, I am making a stopwatch that by pressing the up key it adds more and more watch's, right now I only have it running on one.
When the user inputs the up arrow key, another stopwatch is added, this will just be done as an array and for loop.
The issue is, when using Curses, it locks the screen. No other inputs or anything can be interpreted.

I will put a comment on what doesn't work.

Code:

from time import sleep from curses import wrapper import curses import threading class StopWatch(threading.Thread):    seconds = 0    minutes = 0    hours = 0    def run(self):        while True:            sleep(1)            StopWatch.seconds = StopWatch.seconds + 1            if StopWatch.seconds == 60:                StopWatch.minutes = StopWatch.minutes + 1                StopWatch.seconds = 1            if StopWatch.minutes == 60:                StopWatch.hours = StopWatch.hours + 1                StopWatch.minutes = 1 # The input here does not work class GetInput(threading.Thread):    def run(self):        while True:            c = main.stdscr.getch()            if c == 27:                break        exit(main.stdscr) def main(stdscr):    curses.echo()    StopWatch().start()    GetInput().start()    while True:        sleep(0.10)        stdscr.clear()        strToDisp = '{} Seconds | {} Minutes | {} Hours'        strToDisp = strToDisp.format(StopWatch.seconds,                                     StopWatch.minutes,                                     StopWatch.hours)        stdscr.addstr(0, 0, strToDisp)        stdscr.refresh()    exit(stdscr) def exit(stdscr):    curses.nocbreak()    stdscr.keypad(False)    curses.echo()    curses.endwin() if __name__ == '__main__':    stdscr = curses.initscr()    curses.noecho()    curses.cbreak()    stdscr.keypad(True)    wrapper(main)

Quote:The curses library itself offers only very simple input mechanisms. Python’s support adds a text-input widget that makes up some of the lack.

The most common way to get input to a window is to use its getch() method. getch() pauses and waits for the user to hit a key, displaying it if echo() has been called earlier. You can optionally specify a coordinate to which the cursor should be moved before pausing.

It’s possible to change this behavior with the method nodelay(). After nodelay(1), getch() for the window becomes non-blocking and returns curses.ERR (a value of -1) when no input is ready. There’s also a halfdelay() function, which can be used to (in effect) set a timer on each getch(); if no input becomes available within a specified delay (measured in tenths of a second), curses raises an exception.

The getch() method returns an integer; if it’s between 0 and 255, it represents the ASCII code of the key pressed. Values greater than 255 are special keys such as Page Up, Home, or the cursor keys. You can compare the value returned to constants such as curses.KEY_PPAGE, curses.KEY_HOME, or curses.KEY_LEFT. Usually the main loop of your program will look something like this:

Spoiler:

@ProfessorChill, I saw your question yesterday, but I didn't reply because I didn't know the answer without looking further. Curses (ncurses) has always been a thorn in my side. It's like they try to make it horrible on purpose.

(04-14-2017, 05:48 PM)vhsx Wrote:

(04-13-2017, 08:19 PM)ProfessorChill Wrote: Okay, I am making a stopwatch that by pressing the up key it adds more and more watch's, right now I only have it running on one.
When the user inputs the up arrow key, another stopwatch is added, this will just be done as an array and for loop.
The issue is, when using Curses, it locks the screen. No other inputs or anything can be interpreted.

I will put a comment on what doesn't work.

Code:

from time import sleep from curses import wrapper import curses import threading class StopWatch(threading.Thread):    seconds = 0    minutes = 0    hours = 0    def run(self):        while True:            sleep(1)            StopWatch.seconds = StopWatch.seconds + 1            if StopWatch.seconds == 60:                StopWatch.minutes = StopWatch.minutes + 1                StopWatch.seconds = 1            if StopWatch.minutes == 60:                StopWatch.hours = StopWatch.hours + 1                StopWatch.minutes = 1 # The input here does not work class GetInput(threading.Thread):    def run(self):        while True:            c = main.stdscr.getch()            if c == 27:                break        exit(main.stdscr) def main(stdscr):    curses.echo()    StopWatch().start()    GetInput().start()    while True:        sleep(0.10)        stdscr.clear()        strToDisp = '{} Seconds | {} Minutes | {} Hours'        strToDisp = strToDisp.format(StopWatch.seconds,                                     StopWatch.minutes,                                     StopWatch.hours)        stdscr.addstr(0, 0, strToDisp)        stdscr.refresh()    exit(stdscr) def exit(stdscr):    curses.nocbreak()    stdscr.keypad(False)    curses.echo()    curses.endwin() if __name__ == '__main__':    stdscr = curses.initscr()    curses.noecho()    curses.cbreak()    stdscr.keypad(True)    wrapper(main)

Try stdscr.nodelay()
This will make getch non-blocking.

(04-14-2017, 06:32 PM)m0dem Wrote: I think @vhsx might be right.  Good job!
Let us know if it works, @ProfessorChill.

Quote:The curses library itself offers only very simple input mechanisms. Python’s support adds a text-input widget that makes up some of the lack.

The most common way to get input to a window is to use its getch() method. getch() pauses and waits for the user to hit a key, displaying it if echo() has been called earlier. You can optionally specify a coordinate to which the cursor should be moved before pausing.

It’s possible to change this behavior with the method nodelay(). After nodelay(1), getch() for the window becomes non-blocking and returns curses.ERR (a value of -1) when no input is ready. There’s also a halfdelay() function, which can be used to (in effect) set a timer on each getch(); if no input becomes available within a specified delay (measured in tenths of a second), curses raises an exception.

The getch() method returns an integer; if it’s between 0 and 255, it represents the ASCII code of the key pressed. Values greater than 255 are special keys such as Page Up, Home, or the cursor keys. You can compare the value returned to constants such as curses.KEY_PPAGE, curses.KEY_HOME, or curses.KEY_LEFT. Usually the main loop of your program will look something like this:

https://docs.python.org/2/howto/curses.html#user-input

Spoiler:

@ProfessorChill, I saw your question yesterday, but I didn't reply because I didn't know the answer without looking further.  Curses (ncurses) has always been a thorn in my side.  It's like they try to make it horrible on purpose.  

(04-14-2017, 08:46 PM)ProfessorChill Wrote: UPDATE: Thank you @vhsx! It worked perfectly after that!
At

Code:

if __name__ == '__main__':    stdscr = curses.initscr()    curses.noecho()    curses.cbreak()    stdscr.keypad(True)    stdscr.nodelay(1) <--- It needed a 1 for true and 0 for false    wrapper(main)

https://github.com/ProfessorChill/CLI-StopWatch

(04-15-2017, 12:03 AM)vhsx Wrote: On the python website, if you're ever on a different version, there's a drop down to select a different version.
Also, in your code... the wrapper function handles the teardown of curses for you so you don't need to do all of that. The wrapper also intializes much of that stuff, so if you want to reduce redundancies in your code, you can take a lot of that out.

(04-15-2017, 12:04 AM)vhsx Wrote:

(04-14-2017, 08:46 PM)ProfessorChill Wrote: UPDATE: Thank you @vhsx! It worked perfectly after that!
At

Code:

if __name__ == '__main__':    stdscr = curses.initscr()    curses.noecho()    curses.cbreak()    stdscr.keypad(True)    stdscr.nodelay(1) <--- It needed a 1 for true and 0 for false    wrapper(main)

https://github.com/ProfessorChill/CLI-StopWatch

Glad to hear it!