diff options
Diffstat (limited to 'Doc/howto')
| -rw-r--r-- | Doc/howto/curses.rst | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/Doc/howto/curses.rst b/Doc/howto/curses.rst index 75acd8a..c85b318 100644 --- a/Doc/howto/curses.rst +++ b/Doc/howto/curses.rst @@ -122,8 +122,9 @@ to call:: stdscr.keypad(False) curses.echo() -to reverse the curses-friendly terminal settings. Then call the :func:`endwin` -function to restore the terminal to its original operating mode. :: +to reverse the curses-friendly terminal settings. Then call the +:func:`~curses.endwin` function to restore the terminal to its original +operating mode. :: curses.endwin() @@ -152,7 +153,7 @@ importing the :func:`curses.wrapper` function and using it like this:: wrapper(main) -The :func:`wrapper` function takes a callable object and does the +The :func:`~curses.wrapper` function takes a callable object and does the initializations described above, also initializing colors if color support is present. :func:`wrapper` then runs your provided callable. Once the callable returns, :func:`wrapper` will restore the original @@ -170,7 +171,7 @@ Windows are the basic abstraction in curses. A window object represents a rectangular area of the screen, and supports methods to display text, erase it, allow the user to input strings, and so forth. -The ``stdscr`` object returned by the :func:`initscr` function is a +The ``stdscr`` object returned by the :func:`~curses.initscr` function is a window object that covers the entire screen. Many programs may need only this single window, but you might wish to divide the screen into smaller windows, in order to redraw or clear them separately. The @@ -267,14 +268,14 @@ twisty maze of functions, all subtly different. For example, :c:func:`addstr` displays a string at the current cursor location in the ``stdscr`` window, while :c:func:`mvaddstr` moves to a given y,x coordinate first before displaying the string. :c:func:`waddstr` is just -like :func:`addstr`, but allows specifying a window to use instead of +like :c:func:`addstr`, but allows specifying a window to use instead of using ``stdscr`` by default. :c:func:`mvwaddstr` allows specifying both a window and a coordinate. Fortunately the Python interface hides all these details. ``stdscr`` -is a window object like any other, and methods such as :meth:`addstr` -accept multiple argument forms. Usually there are four different -forms. +is a window object like any other, and methods such as +:meth:`~curses.window.addstr` accept multiple argument forms. Usually there +are four different forms. +---------------------------------+-----------------------------------------------+ | Form | Description | @@ -325,7 +326,7 @@ apparently random location. If your application doesn't need a blinking cursor at all, you can call ``curs_set(False)`` to make it invisible. For compatibility with older curses versions, there's a ``leaveok(bool)`` function -that's a synonym for :func:`curs_set`. When *bool* is true, the +that's a synonym for :func:`~curses.curs_set`. When *bool* is true, the curses library will attempt to suppress the flashing cursor, and you won't need to worry about leaving it in odd locations. @@ -372,10 +373,11 @@ The curses library also supports color on those terminals that provide it. The most common such terminal is probably the Linux console, followed by color xterms. -To use color, you must call the :func:`start_color` function soon after calling -:func:`initscr`, to initialize the default color set (the -:func:`curses.wrapper` function does this automatically). Once that's -done, the :func:`has_colors` function returns TRUE if the terminal in use can +To use color, you must call the :func:`~curses.start_color` function soon +after calling :func:`~curses.initscr`, to initialize the default color set +(the :func:`curses.wrapper` function does this automatically). Once that's +done, the :func:`~curses.has_colors` function returns TRUE if the terminal +in use can actually display color. (Note: curses uses the American spelling 'color', instead of the Canadian/British spelling 'colour'. If you're used to the British spelling, you'll have to resign yourself to misspelling it for the sake @@ -383,9 +385,10 @@ of these functions.) The curses library maintains a finite number of color pairs, containing a foreground (or text) color and a background color. You can get the attribute -value corresponding to a color pair with the :func:`color_pair` function; this -can be bitwise-OR'ed with other attributes such as :const:`A_REVERSE`, but -again, such combinations are not guaranteed to work on all terminals. +value corresponding to a color pair with the :func:`~curses.color_pair` +function; this can be bitwise-OR'ed with other attributes such as +:const:`A_REVERSE`, but again, such combinations are not guaranteed to work +on all terminals. An example, which displays a line of text using color pair 1:: @@ -418,9 +421,10 @@ Very fancy terminals can change the definitions of the actual colors to a given RGB value. This lets you change color 1, which is usually red, to purple or blue or any other color you like. Unfortunately, the Linux console doesn't support this, so I'm unable to try it out, and can't provide any examples. You -can check if your terminal can do this by calling :func:`can_change_color`, -which returns True if the capability is there. If you're lucky enough to have -such a talented terminal, consult your system's man pages for more information. +can check if your terminal can do this by calling +:func:`~curses.can_change_color`, which returns True if the capability is +there. If you're lucky enough to have such a talented terminal, consult your +system's man pages for more information. User Input @@ -434,7 +438,7 @@ collections of widgets.) There are two methods for getting input from a window: * :meth:`~curses.window.getch` refreshes the screen and then waits for - the user to hit a key, displaying the key if :func:`echo` has been + the user to hit a key, displaying the key if :func:`~curses.echo` has been called earlier. You can optionally specify a coordinate to which the cursor should be moved before pausing. |