Python screen.Screen方法代码示例

# 需要导入模块: from prompt_toolkit.layout import screen [as 别名]
# 或者: from prompt_toolkit.layout.screen import Screen [as 别名]
def _reset_screen(self):
        """ Reset the Screen content. (also called when switching from/to
        alternate buffer. """
        self.pt_screen = Screen(default_char=Char(' ', ''))

        self.pt_screen.cursor_position = CursorPosition(0, 0)
        self.pt_screen.show_cursor = True

        self.data_buffer = self.pt_screen.data_buffer
        self.pt_cursor_position = self.pt_screen.cursor_position

        self._attrs = Attrs(color=None, bgcolor=None, bold=False,
                            underline=False, italic=False, blink=False, reverse=False)
        self._style_str = ''

        self.margins = None

        self.max_y = 0  # Max 'y' position to which is written. 

# 需要导入模块: from prompt_toolkit.layout import screen [as 别名]
# 或者: from prompt_toolkit.layout.screen import Screen [as 别名]
def clear(self):
        """
        Clear screen and go to 0,0
        """
        # Erase current output first.
        self.erase()

        # Send "Erase Screen" command and go to (0, 0).
        output = self.output

        output.erase_screen()
        output.cursor_goto(0, 0)
        output.flush()

        self.request_absolute_cursor_position() 

# 需要导入模块: from prompt_toolkit.layout import screen [as 别名]
# 或者: from prompt_toolkit.layout.screen import Screen [as 别名]
def last_rendered_screen(self):
        """
        The `Screen` class that was generated during the last rendering.
        This can be `None`.
        """
        return self._last_screen 

# 需要导入模块: from prompt_toolkit.layout import screen [as 别名]
# 或者: from prompt_toolkit.layout.screen import Screen [as 别名]
def reset(self):
        """Resets the terminal to its initial state.

        * Scroll margins are reset to screen boundaries.
        * Cursor is moved to home location -- ``(0, 0)`` and its
          attributes are set to defaults (see :attr:`default_char`).
        * Screen is cleared -- each character is reset to
          :attr:`default_char`.
        * Tabstops are reset to "every eight columns".

        .. note::

           Neither VT220 nor VT102 manuals mentioned that terminal modes
           and tabstops should be reset as well, thanks to
           :manpage:`xterm` -- we now know that.
        """
        self._reset_screen()

        self.title = ''
        self.icon_name = ''

        # Reset modes.
        self.mode = set([mo.DECAWM, mo.DECTCEM])

        # According to VT220 manual and ``linux/drivers/tty/vt.c``
        # the default G0 charset is latin-1, but for reasons unknown
        # latin-1 breaks ascii-graphics; so G0 defaults to cp437.

        # XXX: The comment above comes from the original Pyte implementation,
        #      it seems for us that LAT1_MAP should indeed be the default, if
        #      not a French version of Vim would incorrectly show some
        #      characters.
        self.charset = 0
        # self.g0_charset = cs.IBMPC_MAP
        self.g0_charset = cs.LAT1_MAP
        self.g1_charset = cs.VT100_MAP

        # From ``man terminfo`` -- "... hardware tabs are initially
        # set every `n` spaces when the terminal is powered up. Since
        # we aim to support VT102 / VT220 and linux -- we use n = 8.

        # (We choose to create tab stops until x=1000, because we keep the
        # tab stops when the screen increases in size. The OS X 'ls' command
        # relies on the stops to be there.)
        self.tabstops = set(range(8, 1000, 8))

        # The original Screen instance, when going to the alternate screen.
        self._original_screen = None