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Diffstat (limited to 'portato/gui/qt/terminal.py')
| -rw-r--r-- | portato/gui/qt/terminal.py | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/portato/gui/qt/terminal.py b/portato/gui/qt/terminal.py deleted file mode 100644 index a70e56b..0000000 --- a/portato/gui/qt/terminal.py +++ /dev/null @@ -1,378 +0,0 @@ -# -*- coding: utf-8 -*- -# -# File: portato/gui/qt/terminal.py -# This file is part of the Portato-Project, a graphical portage-frontend. -# -# Copyright (C) 2007 René 'Necoro' Neumann -# This is free software. You may redistribute copies of it under the terms of -# the GNU General Public License version 2. -# There is NO WARRANTY, to the extent permitted by law. -# -# Written by René 'Necoro' Neumann <necoro@necoro.net> - -from PyQt4 import Qt - -from Queue import Queue -from threading import Thread, currentThread -from os import read, close -import errno - -from portato.gui.wrapper import Console -from portato.helper import debug - -try: - from curses.ascii import ctrl -except ImportError: # emulate ctrl-behavior for known values - def ctrl (val): - if val == "H": return '\x08' - elif val == "W": return '\x17' - else: debug("unknown error passed to emulated ctrl: %s",val) - - -class WriteEvent (Qt.QEvent): - TYPE = Qt.QEvent.Type(1001) - - def __init__ (self, string): - Qt.QEvent.__init__(self, self.TYPE) - self.string = string - - def get_string(self): - return self.string - -class DeleteEvent (Qt.QEvent): - TYPE = Qt.QEvent.Type(1002) - (DEL_CHAR, DEL_WORD, DEL_LINE, DEL_LINE_REVERT) = range(4) - - def __init__ (self, type = DEL_CHAR): - Qt.QEvent.__init__(self, self.TYPE) - self.del_type = type - -class SetPtyEvent (Qt.QEvent): - TYPE = Qt.QEvent.Type(1003) - - def __init__ (self, pty): - Qt.QEvent.__init__(self, self.TYPE) - self.pty = pty - -class BoldFormat (Qt.QTextCharFormat): - - def __init__(self): - Qt.QTextCharFormat.__init__(self) - self.setFontWeight(Qt.QFont.Bold) - -class UnderlineFormat (Qt.QTextCharFormat): - - def __init__(self): - Qt.QTextCharFormat.__init__(self) - self.setFontUnderline(True) - -class ColorFormat (Qt.QTextCharFormat): - - def __init__(self, color): - Qt.QTextCharFormat.__init__(self) - - self.setForeground(Qt.QBrush(Qt.QColor(color))) - -# we only support a subset of the commands -esc_seq = ("\x1b", "[") -reset_seq = "39;49;00" -seq_end = "m" -seq_sep = ";" -backspace = ctrl("H") -backword = ctrl("W") -cr = "\r" - -title_seq = ("\x1b", "]") -title_end = "\x07" - -# the attributes -attr = {} -attr[0] = None # normal -attr[1] = BoldFormat() # bold -attr[4] = UnderlineFormat() # underline -attr[30] = ColorFormat("white") # should be black - but is inverted -attr[31] = ColorFormat("red") -attr[32] = ColorFormat("lime") # lime looks better on black than normal green -attr[33] = ColorFormat("yellow") -attr[34] = ColorFormat("blue") -attr[35] = ColorFormat("magenta") -attr[36] = ColorFormat("cyan") -attr[37] = ColorFormat("white") -attr[39] = None # default - use white too - -class QtConsole (Console, Qt.QTextEdit): - """Self implemented emulation of a terminal emulation. - This only supports a subset of instructions known to normal terminals.""" - - def __init__ (self, parent): - """Constructor. - - @param parent: parent widget - @type parent: Qt.QWidget""" - - Qt.QTextEdit.__init__(self, parent) - - self.pty = None - self.running = False - self.formatQueue = Queue() - self.title = None - self.writeQueue = "" - self.isNotWrapping = False - - self.setContextMenuPolicy(Qt.Qt.ActionsContextMenu) - - # set black bg - self.palette().setColor(Qt.QPalette.Base, Qt.QColor("black")) - - # set highlighting colors ... XXX: for some reasons this does not work ... Qt sucks - self.palette().setColor(Qt.QPalette.Highlight, Qt.QColor("white")) - self.palette().setColor(Qt.QPalette.HighlightedText, Qt.QColor("black")) - - self.setBackgroundRole(Qt.QPalette.Base) - self.setAutoFillBackground(True) - - # set standard char format to "white" - self.stdFormat = self.currentCharFormat() - self.stdFormat.merge(ColorFormat("white")) - self.setCurrentCharFormat(self.stdFormat) - - self.setReadOnly(True) - - def _deletePrev (self, type): - """Deletes the previous character/word.""" - if type == DeleteEvent.DEL_CHAR: # just the prev char - self.textCursor().deletePreviousChar() - - elif type == DeleteEvent.DEL_WORD: - self.textCursor().select(Qt.QTextCursor.WordUnderCursor) - self.textCursor().removeSelectedText() - - elif type == DeleteEvent.DEL_LINE: - self.moveCursor(Qt.QTextCursor.StartOfLine, Qt.QTextCursor.KeepAnchor) - self.textCursor().removeSelectedText() - self.setLineWrapMode(Qt.QTextEdit.NoWrap) - self.isNotWrapping = True - - elif type == DeleteEvent.DEL_LINE_REVERT: - self.setLineWrapMode(Qt.QTextEdit.WidgetWidth) - self.isNotWrapping = False - - def event (self, event): - if event.type() == WriteEvent.TYPE: - self._write(event.get_string()) - event.accept() - return True - - elif event.type() == DeleteEvent.TYPE: - self._deletePrev(event.del_type) - event.accept() - return True - - elif event.type() == SetPtyEvent.TYPE: - self.set_pty(event.pty) - event.accept() - return True - - event.ignore() - return False - - def _write (self, text): - """Writes some text. A text of "\\x1b" signals _write() to reload - the current char format. - - @param text: the text to print - @type text: string""" - - if text == esc_seq[0]: # \x1b -> reload format - self.setCurrentCharFormat(self.get_format()) - else: - if not self.textCursor().atEnd() and not self.isNotWrapping: # move cursor and re-set format - f = self.currentCharFormat() - self.moveCursor(Qt.QTextCursor.End) - self.setCurrentCharFormat(f) - - # insert the text - self.insertPlainText(text) - - # scroll down if needed - if not self.isNotWrapping: self.ensureCursorVisible() - - def write(self, text): - """Convenience function for emitting the writing signal.""" - - def send (text): - Qt.QCoreApplication.postEvent(self, WriteEvent(text)) - - if text is None: - send(self.writeQueue) - self.writeQueue = "" - - elif text == esc_seq[0]: - send(self.writeQueue) - send(text) - self.writeQueue = "" - - elif len(self.writeQueue) == 4: - send(self.writeQueue+text) - self.writeQueue = "" - - else: - self.writeQueue = self.writeQueue + text - - def start_new_thread (self): - """Starts a new thread, which will listen for some input. - @see: QtTerminal.__run()""" - self.run = True - self.current = Thread(target=self.__run, name="QtTerminal Listener") - self.current.setDaemon(True) # close application even if this thread is running - self.current.start() - - def set_pty (self, pty): - if currentThread().getName() != "MainThread": - Qt.QCoreApplication.postEvent(self, SetPtyEvent(pty)) - return - - if not self.running: - self.pty = pty - self.start_new_thread() - self.running = True - - else: # quit current thread - self.run = False - self.clear() - close(self.pty) - - self.pty = pty # set this after clearing to lose no chars :) - self.start_new_thread() - - def __run (self): - """This function is mainly a loop, which looks for some new input at the terminal, - and parses it for text attributes.""" - - got_cr = False - - while self.run: - try: - s = read(self.pty, 1) - except OSError, e: # bug in Python with the subprocess module - if e.errno == errno.EINTR: - continue - raise - - if s == "": break # nothing read -> finish - - if self.isNotWrapping and s == "\n": - self.write(None) - Qt.QCoreApplication.postEvent(self, DeleteEvent(DeleteEvent.DEL_LINE_REVERT)) - - if got_cr: - got_cr = False - if s == "\n": # got \r\n, which is ok - self.write(s) - continue - else: - self.write(None) - Qt.QCoreApplication.postEvent(self, DeleteEvent(DeleteEvent.DEL_LINE)) - - if s == backspace: # BS - self.write(None) - Qt.QCoreApplication.postEvent(self, DeleteEvent()) - - elif s == backword: - self.write(None) - Qt.QCoreApplication.postEvent(self, DeleteEvent(DeleteEvent.DEL_WORD)) - - elif s == cr: # CR -> make the line being deleted - got_cr = True - - elif s == esc_seq[0]: # -> 0x27 - s = read(self.pty, 1) - if s == esc_seq[1]: # -> [ - while True: - _s = read(self.pty, 1) - s += _s - if _s == seq_end: break - self.parse_seq(s[1:-1]) - - elif s == title_seq[1]: # -> ] - while True: - _s = read(self.pty, 1) - s += _s - if _s == title_end: break - - self.parse_title(s[1:-1]) - else: - self.write(esc_seq[0]+s) - - elif not got_cr: - self.write(s) - - self.write(None) - - def parse_seq (self, seq): - """Parses a sequence of bytes. - If a new attribute has been encountered, a new format is created and added - to the internal format queue. - - @param seq: sequence to parse - @type seq: string""" - - global attr # the dict of attributes - - format = self.virgin_format() - - if seq != reset_seq: # resettet -> done - seq = seq.split(seq_sep) - for s in seq: - try: - s = int(s) - except ValueError: - format = self.virgin_format() - break - - try: - if attr[s] is not None: - format.merge(attr[s]) - else: - format = self.virgin_format() - break - except KeyError: # no such attribute - format = self.virgin_format() - break - - self.add_format(format) - self.write(esc_seq[0]) # write \x1b to signal the occurence of a new format - - def parse_title (self, seq): - if not seq.startswith("0;"): - return - - self.title = seq[2:] - - def get_window_title (self): - return self.title - - def add_format (self, format): - """Adds a format to the queue. - We have to take a queue, because the write-signals might occur asynchronus, - so we set a format for the wrong characters. - - @param format: the format to add - @type format: Qt.QTextCharFormat""" - - self.formatQueue.put(format) - - def get_format (self): - """Returns a format from the queue. - We have to take a queue, because the write-signals might occur asynchronus, - so we set a format for the wrong characters. - - @returns: the popped format - @rtype: Qt.QTextCharFormat""" - - return self.formatQueue.get() - - def virgin_format (self): - """The normal standard format. It is necessary to create it as a new one for some - dubious reasons ... only Qt.QGod knows why.""" - return Qt.QTextCharFormat(self.stdFormat) |