matplotlib/examples/user_interfaces/interactive2.py at master · flothesof/matplotlib · GitHub

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#!/usr/bin/env python

from __future__ import print_function

# GTK Interactive Console

# See www.python.org/2.2/license.html for

# license details.

import gtk

import gtk.gdk

import code

import os

import sys

import pango

import __builtin__

import __main__

banner = """GTK Interactive Python Console

Thanks to Jon Anderson

""" % sys.version

banner += """

Welcome to matplotlib.

help(matplotlib) -- some general information about matplotlib

help(plotting) -- shows a list of plot specific commands

"""

class Completer(object):

"""

Taken from rlcompleter, with readline references stripped, and a local dictionary to use.

"""

def __init__(self, locals):

self.locals = locals

def complete(self, text, state):

"""Return the next possible completion for 'text'.

This is called successively with state == 0, 1, 2, ... until it

returns None. The completion should begin with 'text'.

"""

if state == 0:

if "." in text:

self.matches = self.attr_matches(text)

else:

self.matches = self.global_matches(text)

try:

return self.matches[state]

except IndexError:

return None

def global_matches(self, text):

"""Compute matches when text is a simple name.

Return a list of all keywords, built-in functions and names

currently defines in __main__ that match.

"""

import keyword

matches = []

n = len(text)

for list in [keyword.kwlist, __builtin__.__dict__.keys(), __main__.__dict__.keys(), self.locals.keys()]:

for word in list:

if word[:n] == text and word != "__builtins__":

matches.append(word)

return matches

def attr_matches(self, text):

"""Compute matches when text contains a dot.

Assuming the text is of the form NAME.NAME....[NAME], and is

evaluatable in the globals of __main__, it will be evaluated

and its attributes (as revealed by dir()) are used as possible

completions. (For class instances, class members are are also

considered.)

WARNING: this can still invoke arbitrary C code, if an object

with a __getattr__ hook is evaluated.

"""

import re

m = re.match(r"(\w+(\.\w+)*)\.(\w*)", text)

if not m:

return

expr, attr = m.group(1, 3)

object = eval(expr, __main__.__dict__, self.locals)

words = dir(object)

if hasattr(object, '__class__'):

words.append('__class__')

words = words + get_class_members(object.__class__)

matches = []

n = len(attr)

for word in words:

if word[:n] == attr and word != "__builtins__":

matches.append("%s.%s" % (expr, word))

return matches

def get_class_members(klass):

ret = dir(klass)

if hasattr(klass, '__bases__'):

for base in klass.__bases__:

ret = ret + get_class_members(base)

return ret

class OutputStream(object):

"""

A Multiplexing output stream.

It can replace another stream, and tee output to the original stream and too

a GTK textview.

"""

def __init__(self, view, old_out, style):

self.view = view

self.buffer = view.get_buffer()

self.mark = self.buffer.create_mark("End", self.buffer.get_end_iter(), False)

self.out = old_out

self.style = style

self.tee = 1

def write(self, text):

if self.tee:

self.out.write(text)

end = self.buffer.get_end_iter()

if self.view is not None:

self.view.scroll_to_mark(self.mark, 0, True, 1, 1)

self.buffer.insert_with_tags(end, text, self.style)

class GTKInterpreterConsole(gtk.ScrolledWindow):

"""

An InteractiveConsole for GTK. It's an actual widget,

so it can be dropped in just about anywhere.

"""

def __init__(self):

gtk.ScrolledWindow.__init__(self)

self.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)

self.text = gtk.TextView()

self.text.set_wrap_mode(True)

self.interpreter = code.InteractiveInterpreter()

self.completer = Completer(self.interpreter.locals)

self.buffer = []

self.history = []

self.banner = banner

self.ps1 = ">>> "

self.ps2 = "... "

self.text.add_events(gtk.gdk.KEY_PRESS_MASK)

self.text.connect("key_press_event", self.key_pressed)

self.current_history = -1

self.mark = self.text.get_buffer().create_mark("End", self.text.get_buffer().get_end_iter(), False)

# setup colors

self.style_banner = gtk.TextTag("banner")

self.style_banner.set_property("foreground", "saddle brown")

self.style_ps1 = gtk.TextTag("ps1")

self.style_ps1.set_property("foreground", "DarkOrchid4")

self.style_ps1.set_property("editable", False)

self.style_ps1.set_property("font", "courier")

self.style_ps2 = gtk.TextTag("ps2")

self.style_ps2.set_property("foreground", "DarkOliveGreen")

self.style_ps2.set_property("editable", False)

self.style_ps2.set_property("font", "courier")

self.style_out = gtk.TextTag("stdout")

self.style_out.set_property("foreground", "midnight blue")

self.style_err = gtk.TextTag("stderr")

self.style_err.set_property("style", pango.STYLE_ITALIC)

self.style_err.set_property("foreground", "red")

self.text.get_buffer().get_tag_table().add(self.style_banner)

self.text.get_buffer().get_tag_table().add(self.style_ps1)

self.text.get_buffer().get_tag_table().add(self.style_ps2)

self.text.get_buffer().get_tag_table().add(self.style_out)

self.text.get_buffer().get_tag_table().add(self.style_err)

self.stdout = OutputStream(self.text, sys.stdout, self.style_out)

self.stderr = OutputStream(self.text, sys.stderr, self.style_err)

sys.stderr = self.stderr

sys.stdout = self.stdout

self.current_prompt = None

self.write_line(self.banner, self.style_banner)

self.prompt_ps1()

self.add(self.text)

self.text.show()

def reset_history(self):

self.history = []

def reset_buffer(self):

self.buffer = []

def prompt_ps1(self):

self.current_prompt = self.prompt_ps1

self.write_line(self.ps1, self.style_ps1)

def prompt_ps2(self):

self.current_prompt = self.prompt_ps2

self.write_line(self.ps2, self.style_ps2)

def write_line(self, text, style=None):

start, end = self.text.get_buffer().get_bounds()

if style is None:

self.text.get_buffer().insert(end, text)

else:

self.text.get_buffer().insert_with_tags(end, text, style)

self.text.scroll_to_mark(self.mark, 0, True, 1, 1)

def push(self, line):

self.buffer.append(line)

if len(line) > 0:

self.history.append(line)

source = "\n".join(self.buffer)

more = self.interpreter.runsource(source, "<<console>>")

if not more:

self.reset_buffer()

return more

def key_pressed(self, widget, event):

if event.keyval == gtk.gdk.keyval_from_name('Return'):

return self.execute_line()

if event.keyval == gtk.gdk.keyval_from_name('Up'):

self.current_history = self.current_history - 1

if self.current_history < - len(self.history):

self.current_history = - len(self.history)

return self.show_history()

elif event.keyval == gtk.gdk.keyval_from_name('Down'):

self.current_history = self.current_history + 1

if self.current_history > 0:

self.current_history = 0

return self.show_history()

elif event.keyval == gtk.gdk.keyval_from_name('Home'):

l = self.text.get_buffer().get_line_count() - 1

start = self.text.get_buffer().get_iter_at_line_offset(l, 4)

self.text.get_buffer().place_cursor(start)

return True

elif event.keyval == gtk.gdk.keyval_from_name('space') and event.state & gtk.gdk.CONTROL_MASK:

return self.complete_line()

return False

def show_history(self):

if self.current_history == 0:

return True

else:

self.replace_line(self.history[self.current_history])

return True

def current_line(self):

start, end = self.current_line_bounds()

return self.text.get_buffer().get_text(start, end, True)

def current_line_bounds(self):

txt_buffer = self.text.get_buffer()

l = txt_buffer.get_line_count() - 1

start = txt_buffer.get_iter_at_line(l)

if start.get_chars_in_line() >= 4:

start.forward_chars(4)

end = txt_buffer.get_end_iter()

return start, end

def replace_line(self, txt):

start, end = self.current_line_bounds()

self.text.get_buffer().delete(start, end)

self.write_line(txt)

def execute_line(self, line=None):

if line is None:

line = self.current_line()

self.write_line("\n")

else:

self.write_line(line + "\n")

more = self.push(line)

self.text.get_buffer().place_cursor(self.text.get_buffer().get_end_iter())

if more:

self.prompt_ps2()

else:

self.prompt_ps1()

self.current_history = 0

self.window.raise_()

return True

def complete_line(self):

line = self.current_line()

tokens = line.split()

token = tokens[-1]

completions = []

p = self.completer.complete(token, len(completions))

while p is not None:

completions.append(p)

p = self.completer.complete(token, len(completions))

if len(completions) != 1:

self.write_line("\n")

self.write_line("\n".join(completions), self.style_ps1)

self.write_line("\n")

self.current_prompt()

self.write_line(line)

else:

i = line.rfind(token)

line = line[0:i] + completions[0]

self.replace_line(line)

return True

def main():

w = gtk.Window()

console = GTKInterpreterConsole()

console.set_size_request(640, 480)

w.add(console)

def destroy(arg=None):

gtk.main_quit()

def key_event(widget, event):

if gtk.gdk.keyval_name(event.keyval) == 'd' and \

event.state & gtk.gdk.CONTROL_MASK:

destroy()

return False

w.connect("destroy", destroy)

w.add_events(gtk.gdk.KEY_PRESS_MASK)

w.connect('key_press_event', key_event)

w.show_all()

console.execute_line('import matplotlib')

console.execute_line("matplotlib.use('GTKAgg')")

console.execute_line('matplotlib.interactive(1)')

console.execute_line('from pylab import *')

if len(sys.argv) > 1:

fname = sys.argv[1]

if not os.path.exists(fname):

print('%s does not exist' % fname)

for line in file(fname):

line = line.strip()

console.execute_line(line)

gtk.main()

if __name__ == '__main__':

main()

matplotlib/examples/user_interfaces/interactive2.py at master · flothesof/matplotlib · GitHub

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