# -*- coding: utf-8 -*-

from tuikit.common import Size, ClipStack

class Driver:

    """Driver base class.

    Defines common interface.

    """

    def __init__(self):

        #: Screen size.

        self.size = Size()

        #: Clipping region stack.

        self.clipstack = ClipStack()

    ## initialization, finalization ##

    def init(self):

        """Initialize the driver and screen."""

        pass

    def close(self):

        """Clean up the screen etc."""

        pass

    ## drawing ##

    def erase(self):

        pass

    def putch(self, x, y, c):

        pass

    def draw(self, buffer, x=0, y=0):

        for bufy in range(buffer.size.h):

            for bufx in range(buffer.size.w):

                print(buffer.get(bufx, bufy)[0], end='')

            print()

    def flush(self):

        pass

    ## colors, attributes ##

    def setattr(self, attr_desc):

        """Set attribute to be used for subsequent draw operations."""

        pass

    ## cursor ##

    def showcursor(self, x, y):

        pass

    def hidecursor(self):

        pass

    ## input, events ##

    def getevents(self, timeout=None):

        """Process input, return list of events.

        timeout -- float, in seconds (None=infinite)

        Returns:

            [('event', param1, ...), ...]

        """

        return []