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121 lines
4.0 KiB
Python
121 lines
4.0 KiB
Python
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from . import win32
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# from wincon.h
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class WinColor(object):
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BLACK = 0
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BLUE = 1
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GREEN = 2
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CYAN = 3
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RED = 4
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MAGENTA = 5
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YELLOW = 6
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GREY = 7
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# from wincon.h
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class WinStyle(object):
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NORMAL = 0x00 # dim text, dim background
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BRIGHT = 0x08 # bright text, dim background
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class WinTerm(object):
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def __init__(self):
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self._default = win32.GetConsoleScreenBufferInfo(win32.STDOUT).wAttributes
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self.set_attrs(self._default)
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self._default_fore = self._fore
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self._default_back = self._back
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self._default_style = self._style
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def get_attrs(self):
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return self._fore + self._back * 16 + self._style
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def set_attrs(self, value):
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self._fore = value & 7
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self._back = (value >> 4) & 7
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self._style = value & WinStyle.BRIGHT
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def reset_all(self, on_stderr=None):
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self.set_attrs(self._default)
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self.set_console(attrs=self._default)
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def fore(self, fore=None, on_stderr=False):
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if fore is None:
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fore = self._default_fore
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self._fore = fore
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self.set_console(on_stderr=on_stderr)
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def back(self, back=None, on_stderr=False):
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if back is None:
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back = self._default_back
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self._back = back
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self.set_console(on_stderr=on_stderr)
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def style(self, style=None, on_stderr=False):
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if style is None:
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style = self._default_style
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self._style = style
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self.set_console(on_stderr=on_stderr)
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def set_console(self, attrs=None, on_stderr=False):
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if attrs is None:
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attrs = self.get_attrs()
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handle = win32.STDOUT
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if on_stderr:
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handle = win32.STDERR
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win32.SetConsoleTextAttribute(handle, attrs)
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def get_position(self, handle):
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position = win32.GetConsoleScreenBufferInfo(handle).dwCursorPosition
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# Because Windows coordinates are 0-based,
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# and win32.SetConsoleCursorPosition expects 1-based.
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position.X += 1
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position.Y += 1
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return position
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def set_cursor_position(self, position=None, on_stderr=False):
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if position is None:
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#I'm not currently tracking the position, so there is no default.
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#position = self.get_position()
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return
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handle = win32.STDOUT
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if on_stderr:
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handle = win32.STDERR
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win32.SetConsoleCursorPosition(handle, position)
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def cursor_up(self, num_rows=0, on_stderr=False):
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if num_rows == 0:
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return
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handle = win32.STDOUT
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if on_stderr:
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handle = win32.STDERR
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position = self.get_position(handle)
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adjusted_position = (position.Y - num_rows, position.X)
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self.set_cursor_position(adjusted_position, on_stderr)
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def erase_data(self, mode=0, on_stderr=False):
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# 0 (or None) should clear from the cursor to the end of the screen.
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# 1 should clear from the cursor to the beginning of the screen.
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# 2 should clear the entire screen. (And maybe move cursor to (1,1)?)
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#
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# At the moment, I only support mode 2. From looking at the API, it
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# should be possible to calculate a different number of bytes to clear,
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# and to do so relative to the cursor position.
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if mode[0] not in (2,):
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return
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handle = win32.STDOUT
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if on_stderr:
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handle = win32.STDERR
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# here's where we'll home the cursor
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coord_screen = win32.COORD(0,0)
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csbi = win32.GetConsoleScreenBufferInfo(handle)
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# get the number of character cells in the current buffer
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dw_con_size = csbi.dwSize.X * csbi.dwSize.Y
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# fill the entire screen with blanks
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win32.FillConsoleOutputCharacter(handle, ord(' '), dw_con_size, coord_screen)
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# now set the buffer's attributes accordingly
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win32.FillConsoleOutputAttribute(handle, self.get_attrs(), dw_con_size, coord_screen );
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# put the cursor at (0, 0)
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win32.SetConsoleCursorPosition(handle, (coord_screen.X, coord_screen.Y))
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