124 lines
3.8 KiB
Python
124 lines
3.8 KiB
Python
#
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# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
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#
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# Jockey is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2, or (at your option) any
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# later version.
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#
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# Jockey is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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import sys
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import basecanvas
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import pscanvas
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import pdfcanvas
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import svgcanvas
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import pngcanvas
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import x11canvas
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import theme
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import re
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invalid_coord = -999999
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_oldexitfunc = None
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T = basecanvas.T
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def init(fname = None, format = None):
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"""This is a "factory" procedure that creates a new canvas.T object.
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Both parameters, <fname> and
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<format>, are optional. Parameter <fname> specifies either the output
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file name or a file object. Parameter <format>, if specified, defines the
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file's format. Its value must be one of "ps", "pdf", "svg", "x11", or
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"png".
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When <fname> is omitted or is None, the output is sent to standard
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output. When <format> is omitted, it is guessed from the <fname>'s
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suffix; failing that, "ps" is selected."""
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fname = fname or theme.output_file
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format = format or theme.output_format
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if format == None:
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if not isinstance(fname, str):
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format = "ps"
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elif re.search("pdf$", fname):
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format = "pdf"
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elif re.search("png$", fname):
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format = "png"
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elif re.search("svg$", fname):
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format = "svg"
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else:
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format = "ps"
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if format == "ps":
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can = pscanvas.T(fname)
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elif format == "png":
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can = pngcanvas.T(fname)
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elif format == "x11":
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can = x11canvas.T(fname)
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elif format == "svg":
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can = svgcanvas.T(fname)
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else:
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can = pdfcanvas.T(fname, theme.compress_output)
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return can
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def default_canvas():
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if len(basecanvas.active_canvases) > 0:
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return basecanvas.active_canvases[0]
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else:
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return init(None)
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def _exit():
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global _oldexitfunc, _active_canvases
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for can in basecanvas.active_canvases[:]:
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can.close()
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if _oldexitfunc:
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foo = _oldexitfunc
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_oldexitfunc = None
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foo()
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#
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# The following procedures are there just for backward compatibility.
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#
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def line(style, x1, y1, x2, y2):
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default_canvas().line(style, x1, y1, x2, y2)
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def curve(style, points):
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default_canvas().curve(style, points)
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def clip(x1, y1, x2, y2):
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default_canvas().clip(x1, y1, x2, y2)
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def endclip():
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default_canvas().endclip()
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def clip_polygon(points):
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default_canvas().clip_polygon(points)
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def clip_ellipsis(x, y, radius, ratio = 1.0):
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default_canvas().clip_ellipsis(x, y, radius, ratio)
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def ellipsis(line_style, pattern, x, y, radius, ratio = 1.0,
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start_angle=0, end_angle=360, shadow=None):
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default_canvas().ellipsis(line_style, pattern, x, y, radius, ratio,
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start_angle, end_angle, shadow)
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def rectangle(edge_style, pat, x1, y1, x2, y2, shadow = None):
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default_canvas().rectangle(edge_style, pat, x1, y1, x2, y2, shadow)
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def polygon(edge_style, pat, points, shadow = None):
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default_canvas().polygon(edge_style, pat, points, shadow = None)
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def close():
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default_canvas().close()
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def round_rectangle(style, fill, x1, y1, x2, y2, radius, shadow=None):
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default_canvas().round_rectangle(style, fill, x1, y1, x2, y2, radius, shadow)
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def show(x, y, str):
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default_canvas().show(x, y, str)
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if not vars(sys).has_key("exitfunc"):
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sys.exitfunc = _exit
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elif sys.exitfunc != _exit:
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_oldexitfunc = sys.exitfunc
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sys.exitfunc = _exit
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#theme.add_reinitialization_hook(lambda: init(None))
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