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# encoding: utf-8
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"""
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A Wx widget to act as a console and input commands.
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This widget deals with prompts and provides an edit buffer
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restricted to after the last prompt.
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"""
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__docformat__ = "restructuredtext en"
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#-------------------------------------------------------------------------------
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# Copyright (C) 2008 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is
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# in the file COPYING, distributed as part of this software.
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#-------------------------------------------------------------------------------
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#-------------------------------------------------------------------------------
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# Imports
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#-------------------------------------------------------------------------------
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import wx
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import wx.stc as stc
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from wx.py import editwindow
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import time
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import sys
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import string
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LINESEP = '\n'
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if sys.platform == 'win32':
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LINESEP = '\n\r'
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import re
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# FIXME: Need to provide an API for non user-generated display on the
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# screen: this should not be editable by the user.
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#-------------------------------------------------------------------------------
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# Constants
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#-------------------------------------------------------------------------------
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_COMPLETE_BUFFER_MARKER = 31
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_ERROR_MARKER = 30
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_INPUT_MARKER = 29
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_DEFAULT_SIZE = 10
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if sys.platform == 'darwin':
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_DEFAULT_SIZE = 12
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_DEFAULT_STYLE = {
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#background definition
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'default' : 'size:%d' % _DEFAULT_SIZE,
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'bracegood' : 'fore:#00AA00,back:#000000,bold',
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'bracebad' : 'fore:#FF0000,back:#000000,bold',
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# Edge column: a number of None
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'edge_column' : -1,
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# properties for the various Python lexer styles
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'comment' : 'fore:#007F00',
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'number' : 'fore:#007F7F',
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'string' : 'fore:#7F007F,italic',
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'char' : 'fore:#7F007F,italic',
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'keyword' : 'fore:#00007F,bold',
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'triple' : 'fore:#7F0000',
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'tripledouble' : 'fore:#7F0000',
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'class' : 'fore:#0000FF,bold,underline',
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'def' : 'fore:#007F7F,bold',
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'operator' : 'bold',
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# Default colors
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'trace' : '#FAFAF1', # Nice green
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'stdout' : '#FDFFD3', # Nice yellow
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'stderr' : '#FFF1F1', # Nice red
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# Default scintilla settings
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'antialiasing' : True,
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'carret_color' : 'BLACK',
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'background_color' :'WHITE',
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#prompt definition
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'prompt_in1' : \
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'\n\x01\x1b[0;34m\x02In [\x01\x1b[1;34m\x02$number\x01\x1b[0;34m\x02]: \x01\x1b[0m\x02',
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'prompt_out': \
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'\x01\x1b[0;31m\x02Out[\x01\x1b[1;31m\x02$number\x01\x1b[0;31m\x02]: \x01\x1b[0m\x02',
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}
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# new style numbers
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_STDOUT_STYLE = 15
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_STDERR_STYLE = 16
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_TRACE_STYLE = 17
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# system colors
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#SYS_COLOUR_BACKGROUND = wx.SystemSettings.GetColour(wx.SYS_COLOUR_BACKGROUND)
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# Translation table from ANSI escape sequences to color.
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ANSI_STYLES = {'0;30': [0, 'BLACK'], '0;31': [1, 'RED'],
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'0;32': [2, 'GREEN'], '0;33': [3, 'BROWN'],
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'0;34': [4, 'BLUE'], '0;35': [5, 'PURPLE'],
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'0;36': [6, 'CYAN'], '0;37': [7, 'LIGHT GREY'],
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'1;30': [8, 'DARK GREY'], '1;31': [9, 'RED'],
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'1;32': [10, 'SEA GREEN'], '1;33': [11, 'YELLOW'],
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'1;34': [12, 'LIGHT BLUE'], '1;35':
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[13, 'MEDIUM VIOLET RED'],
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'1;36': [14, 'LIGHT STEEL BLUE'], '1;37': [15, 'YELLOW']}
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# XXX: Maybe one day we should factor this code with coloransi. Right now
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# coloransi is hard to reuse and makes our code more complex.
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#we define platform specific fonts
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if wx.Platform == '__WXMSW__':
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FACES = { 'times': 'Times New Roman',
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'mono' : 'Courier New',
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'helv' : 'Arial',
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'other': 'Comic Sans MS',
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'size' : 10,
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'size2': 8,
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}
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elif wx.Platform == '__WXMAC__':
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FACES = { 'times': 'Times New Roman',
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'mono' : 'Monaco',
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'helv' : 'Arial',
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'other': 'Comic Sans MS',
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'size' : 10,
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'size2': 8,
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}
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else:
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FACES = { 'times': 'Times',
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'mono' : 'Courier',
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'helv' : 'Helvetica',
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'other': 'new century schoolbook',
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'size' : 10,
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'size2': 8,
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}
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#-------------------------------------------------------------------------------
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# The console widget class
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#-------------------------------------------------------------------------------
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class ConsoleWidget(editwindow.EditWindow):
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""" Specialized styled text control view for console-like workflow.
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This widget is mainly interested in dealing with the prompt and
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keeping the cursor inside the editing line.
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"""
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# This is where the title captured from the ANSI escape sequences are
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# stored.
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title = 'Console'
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# Last prompt printed
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last_prompt = ''
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# The buffer being edited.
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def _set_input_buffer(self, string):
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self.SetSelection(self.current_prompt_pos, self.GetLength())
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self.ReplaceSelection(string)
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self.GotoPos(self.GetLength())
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def _get_input_buffer(self):
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""" Returns the text in current edit buffer.
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"""
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input_buffer = self.GetTextRange(self.current_prompt_pos,
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self.GetLength())
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input_buffer = input_buffer.replace(LINESEP, '\n')
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return input_buffer
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input_buffer = property(_get_input_buffer, _set_input_buffer)
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style = _DEFAULT_STYLE.copy()
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# Translation table from ANSI escape sequences to color. Override
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# this to specify your colors.
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ANSI_STYLES = ANSI_STYLES.copy()
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# Font faces
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faces = FACES.copy()
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# Store the last time a refresh was done
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_last_refresh_time = 0
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#--------------------------------------------------------------------------
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# Public API
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#--------------------------------------------------------------------------
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def __init__(self, parent, id=wx.ID_ANY, pos=wx.DefaultPosition,
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size=wx.DefaultSize, style=wx.WANTS_CHARS, ):
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editwindow.EditWindow.__init__(self, parent, id, pos, size, style)
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self.configure_scintilla()
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# Track if 'enter' key as ever been processed
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# This variable will only be reallowed until key goes up
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self.enter_catched = False
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self.current_prompt_pos = 0
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self.Bind(wx.EVT_KEY_DOWN, self._on_key_down)
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self.Bind(wx.EVT_KEY_UP, self._on_key_up)
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def write(self, text, refresh=True):
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""" Write given text to buffer, while translating the ansi escape
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sequences.
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"""
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# XXX: do not put print statements to sys.stdout/sys.stderr in
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# this method, the print statements will call this method, as
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# you will end up with an infinit loop
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title = self.title_pat.split(text)
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if len(title)>1:
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self.title = title[-2]
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text = self.title_pat.sub('', text)
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segments = self.color_pat.split(text)
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segment = segments.pop(0)
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self.GotoPos(self.GetLength())
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self.StartStyling(self.GetLength(), 0xFF)
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try:
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self.AppendText(segment)
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except UnicodeDecodeError:
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# XXX: Do I really want to skip the exception?
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pass
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if segments:
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for ansi_tag, text in zip(segments[::2], segments[1::2]):
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self.StartStyling(self.GetLength(), 0xFF)
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try:
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self.AppendText(text)
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except UnicodeDecodeError:
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# XXX: Do I really want to skip the exception?
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pass
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if ansi_tag not in self.ANSI_STYLES:
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style = 0
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else:
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style = self.ANSI_STYLES[ansi_tag][0]
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self.SetStyling(len(text), style)
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self.GotoPos(self.GetLength())
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if refresh:
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current_time = time.time()
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if current_time - self._last_refresh_time > 0.03:
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if sys.platform == 'win32':
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wx.SafeYield()
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else:
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wx.Yield()
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# self.ProcessEvent(wx.PaintEvent())
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self._last_refresh_time = current_time
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def new_prompt(self, prompt):
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""" Prints a prompt at start of line, and move the start of the
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current block there.
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The prompt can be given with ascii escape sequences.
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"""
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self.write(prompt, refresh=False)
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# now we update our cursor giving end of prompt
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self.current_prompt_pos = self.GetLength()
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self.current_prompt_line = self.GetCurrentLine()
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self.EnsureCaretVisible()
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self.last_prompt = prompt
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def continuation_prompt(self):
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""" Returns the current continuation prompt.
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We need to implement this method here to deal with the
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ascii escape sequences cleaning up.
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"""
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# ASCII-less prompt
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ascii_less = ''.join(self.color_pat.split(self.last_prompt)[2::2])
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return "."*(len(ascii_less)-2) + ': '
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def scroll_to_bottom(self):
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maxrange = self.GetScrollRange(wx.VERTICAL)
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self.ScrollLines(maxrange)
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def pop_completion(self, possibilities, offset=0):
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""" Pops up an autocompletion menu. Offset is the offset
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in characters of the position at which the menu should
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appear, relativ to the cursor.
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"""
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self.AutoCompSetIgnoreCase(False)
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self.AutoCompSetAutoHide(False)
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self.AutoCompSetMaxHeight(len(possibilities))
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self.AutoCompShow(offset, " ".join(possibilities))
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def get_line_width(self):
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""" Return the width of the line in characters.
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"""
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return self.GetSize()[0]/self.GetCharWidth()
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def configure_scintilla(self):
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""" Set up all the styling option of the embedded scintilla
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widget.
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"""
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p = self.style.copy()
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# Marker for complete buffer.
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self.MarkerDefine(_COMPLETE_BUFFER_MARKER, stc.STC_MARK_BACKGROUND,
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background=p['trace'])
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# Marker for current input buffer.
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self.MarkerDefine(_INPUT_MARKER, stc.STC_MARK_BACKGROUND,
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background=p['stdout'])
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# Marker for tracebacks.
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self.MarkerDefine(_ERROR_MARKER, stc.STC_MARK_BACKGROUND,
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background=p['stderr'])
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self.SetEOLMode(stc.STC_EOL_LF)
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# Ctrl"+" or Ctrl "-" can be used to zoomin/zoomout the text inside
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# the widget
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self.CmdKeyAssign(ord('+'), stc.STC_SCMOD_CTRL, stc.STC_CMD_ZOOMIN)
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self.CmdKeyAssign(ord('-'), stc.STC_SCMOD_CTRL, stc.STC_CMD_ZOOMOUT)
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# Also allow Ctrl Shift "=" for poor non US keyboard users.
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self.CmdKeyAssign(ord('='), stc.STC_SCMOD_CTRL|stc.STC_SCMOD_SHIFT,
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stc.STC_CMD_ZOOMIN)
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# Keys: we need to clear some of the keys the that don't play
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# well with a console.
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self.CmdKeyClear(ord('D'), stc.STC_SCMOD_CTRL)
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self.CmdKeyClear(ord('L'), stc.STC_SCMOD_CTRL)
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self.CmdKeyClear(ord('T'), stc.STC_SCMOD_CTRL)
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self.CmdKeyClear(ord('A'), stc.STC_SCMOD_CTRL)
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self.SetEOLMode(stc.STC_EOL_CRLF)
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self.SetWrapMode(stc.STC_WRAP_CHAR)
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self.SetWrapMode(stc.STC_WRAP_WORD)
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self.SetBufferedDraw(True)
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self.SetUseAntiAliasing(p['antialiasing'])
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self.SetLayoutCache(stc.STC_CACHE_PAGE)
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self.SetUndoCollection(False)
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self.SetUseTabs(True)
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self.SetIndent(4)
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self.SetTabWidth(4)
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# we don't want scintilla's autocompletion to choose
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# automaticaly out of a single choice list, as we pop it up
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# automaticaly
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self.AutoCompSetChooseSingle(False)
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self.AutoCompSetMaxHeight(10)
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# XXX: this doesn't seem to have an effect.
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self.AutoCompSetFillUps('\n')
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self.SetMargins(3, 3) #text is moved away from border with 3px
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# Suppressing Scintilla margins
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self.SetMarginWidth(0, 0)
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self.SetMarginWidth(1, 0)
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self.SetMarginWidth(2, 0)
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# Xterm escape sequences
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self.color_pat = re.compile('\x01?\x1b\[(.*?)m\x02?')
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self.title_pat = re.compile('\x1b]0;(.*?)\x07')
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# styles
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self.SetCaretForeground(p['carret_color'])
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background_color = p['background_color']
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if 'default' in p:
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if 'back' not in p['default']:
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p['default'] += ',back:%s' % background_color
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if 'size' not in p['default']:
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p['default'] += ',size:%s' % self.faces['size']
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if 'face' not in p['default']:
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p['default'] += ',face:%s' % self.faces['mono']
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self.StyleSetSpec(stc.STC_STYLE_DEFAULT, p['default'])
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else:
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self.StyleSetSpec(stc.STC_STYLE_DEFAULT,
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"fore:%s,back:%s,size:%d,face:%s"
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% (self.ANSI_STYLES['0;30'][1],
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background_color,
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self.faces['size'], self.faces['mono']))
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self.StyleClearAll()
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# XXX: two lines below are usefull if not using the lexer
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#for style in self.ANSI_STYLES.values():
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# self.StyleSetSpec(style[0], "bold,fore:%s" % style[1])
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# prompt definition
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self.prompt_in1 = p['prompt_in1']
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self.prompt_out = p['prompt_out']
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self.output_prompt_template = string.Template(self.prompt_out)
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self.input_prompt_template = string.Template(self.prompt_in1)
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self.StyleSetSpec(_STDOUT_STYLE, p['stdout'])
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self.StyleSetSpec(_STDERR_STYLE, p['stderr'])
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self.StyleSetSpec(_TRACE_STYLE, p['trace'])
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self.StyleSetSpec(stc.STC_STYLE_BRACELIGHT, p['bracegood'])
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self.StyleSetSpec(stc.STC_STYLE_BRACEBAD, p['bracebad'])
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self.StyleSetSpec(stc.STC_P_COMMENTLINE, p['comment'])
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self.StyleSetSpec(stc.STC_P_NUMBER, p['number'])
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self.StyleSetSpec(stc.STC_P_STRING, p['string'])
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self.StyleSetSpec(stc.STC_P_CHARACTER, p['char'])
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self.StyleSetSpec(stc.STC_P_WORD, p['keyword'])
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self.StyleSetSpec(stc.STC_P_WORD2, p['keyword'])
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self.StyleSetSpec(stc.STC_P_TRIPLE, p['triple'])
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self.StyleSetSpec(stc.STC_P_TRIPLEDOUBLE, p['tripledouble'])
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self.StyleSetSpec(stc.STC_P_CLASSNAME, p['class'])
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self.StyleSetSpec(stc.STC_P_DEFNAME, p['def'])
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self.StyleSetSpec(stc.STC_P_OPERATOR, p['operator'])
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self.StyleSetSpec(stc.STC_P_COMMENTBLOCK, p['comment'])
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edge_column = p['edge_column']
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if edge_column is not None and edge_column > 0:
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#we add a vertical line to console widget
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|
self.SetEdgeMode(stc.STC_EDGE_LINE)
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self.SetEdgeColumn(edge_column)
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|
|
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|
#--------------------------------------------------------------------------
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|
# EditWindow API
|
|
|
#--------------------------------------------------------------------------
|
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|
|
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|
def OnUpdateUI(self, event):
|
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|
""" Override the OnUpdateUI of the EditWindow class, to prevent
|
|
|
syntax highlighting both for faster redraw, and for more
|
|
|
consistent look and feel.
|
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|
"""
|
|
|
|
|
|
|
|
|
#--------------------------------------------------------------------------
|
|
|
# Private API
|
|
|
#--------------------------------------------------------------------------
|
|
|
|
|
|
def _on_key_down(self, event, skip=True):
|
|
|
""" Key press callback used for correcting behavior for
|
|
|
console-like interfaces: the cursor is constraint to be after
|
|
|
the last prompt.
|
|
|
|
|
|
Return True if event as been catched.
|
|
|
"""
|
|
|
catched = True
|
|
|
# XXX: Would the right way to do this be to have a
|
|
|
# dictionary at the instance level associating keys with
|
|
|
# callbacks? How would we deal with inheritance? And Do the
|
|
|
# different callbacks share local variables?
|
|
|
|
|
|
# Intercept some specific keys.
|
|
|
key_code = event.GetKeyCode()
|
|
|
if key_code == ord('L') and event.ControlDown() :
|
|
|
self.scroll_to_bottom()
|
|
|
elif key_code == ord('K') and event.ControlDown() :
|
|
|
self.input_buffer = ''
|
|
|
elif key_code == ord('A') and event.ControlDown() :
|
|
|
self.GotoPos(self.GetLength())
|
|
|
self.SetSelectionStart(self.current_prompt_pos)
|
|
|
self.SetSelectionEnd(self.GetCurrentPos())
|
|
|
catched = True
|
|
|
elif key_code == ord('E') and event.ControlDown() :
|
|
|
self.GotoPos(self.GetLength())
|
|
|
catched = True
|
|
|
elif key_code == wx.WXK_PAGEUP:
|
|
|
self.ScrollPages(-1)
|
|
|
elif key_code == wx.WXK_PAGEDOWN:
|
|
|
self.ScrollPages(1)
|
|
|
elif key_code == wx.WXK_HOME:
|
|
|
self.GotoPos(self.GetLength())
|
|
|
elif key_code == wx.WXK_END:
|
|
|
self.GotoPos(self.GetLength())
|
|
|
elif key_code == wx.WXK_UP and event.ShiftDown():
|
|
|
self.ScrollLines(-1)
|
|
|
elif key_code == wx.WXK_DOWN and event.ShiftDown():
|
|
|
self.ScrollLines(1)
|
|
|
else:
|
|
|
catched = False
|
|
|
|
|
|
if self.AutoCompActive():
|
|
|
event.Skip()
|
|
|
else:
|
|
|
if key_code in (13, wx.WXK_NUMPAD_ENTER):
|
|
|
# XXX: not catching modifiers, to be wx2.6-compatible
|
|
|
catched = True
|
|
|
if not self.enter_catched:
|
|
|
self.CallTipCancel()
|
|
|
if event.ShiftDown():
|
|
|
# Try to force execution
|
|
|
self.GotoPos(self.GetLength())
|
|
|
self.write('\n' + self.continuation_prompt(),
|
|
|
refresh=False)
|
|
|
self._on_enter()
|
|
|
else:
|
|
|
self._on_enter()
|
|
|
self.enter_catched = True
|
|
|
|
|
|
elif key_code == wx.WXK_HOME:
|
|
|
if not event.ShiftDown():
|
|
|
self.GotoPos(self.current_prompt_pos)
|
|
|
catched = True
|
|
|
else:
|
|
|
# FIXME: This behavior is not ideal: if the selection
|
|
|
# is already started, it will jump.
|
|
|
self.SetSelectionStart(self.current_prompt_pos)
|
|
|
self.SetSelectionEnd(self.GetCurrentPos())
|
|
|
catched = True
|
|
|
|
|
|
elif key_code == wx.WXK_UP:
|
|
|
if self.GetCurrentLine() > self.current_prompt_line:
|
|
|
if self.GetCurrentLine() == self.current_prompt_line + 1 \
|
|
|
and self.GetColumn(self.GetCurrentPos()) < \
|
|
|
self.GetColumn(self.current_prompt_pos):
|
|
|
self.GotoPos(self.current_prompt_pos)
|
|
|
else:
|
|
|
event.Skip()
|
|
|
catched = True
|
|
|
|
|
|
elif key_code in (wx.WXK_LEFT, wx.WXK_BACK):
|
|
|
if not self._keep_cursor_in_buffer(self.GetCurrentPos() - 1):
|
|
|
event.Skip()
|
|
|
catched = True
|
|
|
|
|
|
elif key_code == wx.WXK_RIGHT:
|
|
|
if not self._keep_cursor_in_buffer(self.GetCurrentPos() + 1):
|
|
|
event.Skip()
|
|
|
catched = True
|
|
|
|
|
|
|
|
|
elif key_code == wx.WXK_DELETE:
|
|
|
if not self._keep_cursor_in_buffer(self.GetCurrentPos() - 1):
|
|
|
event.Skip()
|
|
|
catched = True
|
|
|
|
|
|
if skip and not catched:
|
|
|
# Put the cursor back in the edit region
|
|
|
if not self._keep_cursor_in_buffer():
|
|
|
if not (self.GetCurrentPos() == self.GetLength()
|
|
|
and key_code == wx.WXK_DELETE):
|
|
|
event.Skip()
|
|
|
catched = True
|
|
|
|
|
|
return catched
|
|
|
|
|
|
|
|
|
def _on_key_up(self, event, skip=True):
|
|
|
""" If cursor is outside the editing region, put it back.
|
|
|
"""
|
|
|
if skip:
|
|
|
event.Skip()
|
|
|
self._keep_cursor_in_buffer()
|
|
|
|
|
|
|
|
|
# XXX: I need to avoid the problem of having an empty glass;
|
|
|
def _keep_cursor_in_buffer(self, pos=None):
|
|
|
""" Checks if the cursor is where it is allowed to be. If not,
|
|
|
put it back.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
cursor_moved: Boolean
|
|
|
whether or not the cursor was moved by this routine.
|
|
|
|
|
|
Notes
|
|
|
------
|
|
|
WARNING: This does proper checks only for horizontal
|
|
|
movements.
|
|
|
"""
|
|
|
if pos is None:
|
|
|
current_pos = self.GetCurrentPos()
|
|
|
else:
|
|
|
current_pos = pos
|
|
|
if current_pos < self.current_prompt_pos:
|
|
|
self.GotoPos(self.current_prompt_pos)
|
|
|
return True
|
|
|
line_num = self.LineFromPosition(current_pos)
|
|
|
if not current_pos > self.GetLength():
|
|
|
line_pos = self.GetColumn(current_pos)
|
|
|
else:
|
|
|
line_pos = self.GetColumn(self.GetLength())
|
|
|
line = self.GetLine(line_num)
|
|
|
# Jump the continuation prompt
|
|
|
continuation_prompt = self.continuation_prompt()
|
|
|
if ( line.startswith(continuation_prompt)
|
|
|
and line_pos < len(continuation_prompt)):
|
|
|
if line_pos < 2:
|
|
|
# We are at the beginning of the line, trying to move
|
|
|
# forward: jump forward.
|
|
|
self.GotoPos(current_pos + 1 +
|
|
|
len(continuation_prompt) - line_pos)
|
|
|
else:
|
|
|
# Jump back up
|
|
|
self.GotoPos(self.GetLineEndPosition(line_num-1))
|
|
|
return True
|
|
|
elif ( current_pos > self.GetLineEndPosition(line_num)
|
|
|
and not current_pos == self.GetLength()):
|
|
|
# Jump to next line
|
|
|
self.GotoPos(current_pos + 1 +
|
|
|
len(continuation_prompt))
|
|
|
return True
|
|
|
|
|
|
# We re-allow enter event processing
|
|
|
self.enter_catched = False
|
|
|
return False
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
# Some simple code to test the console widget.
|
|
|
class MainWindow(wx.Frame):
|
|
|
def __init__(self, parent, id, title):
|
|
|
wx.Frame.__init__(self, parent, id, title, size=(300, 250))
|
|
|
self._sizer = wx.BoxSizer(wx.VERTICAL)
|
|
|
self.console_widget = ConsoleWidget(self)
|
|
|
self._sizer.Add(self.console_widget, 1, wx.EXPAND)
|
|
|
self.SetSizer(self._sizer)
|
|
|
self.SetAutoLayout(1)
|
|
|
self.Show(True)
|
|
|
|
|
|
app = wx.PySimpleApp()
|
|
|
w = MainWindow(None, wx.ID_ANY, 'ConsoleWidget')
|
|
|
w.SetSize((780, 460))
|
|
|
w.Show()
|
|
|
|
|
|
app.MainLoop()
|
|
|
|
|
|
|
|
|
|
