class OutputView(gtk.TextView):
"""The display for all the text received from the MUD."""
def __init__(self, gui):
gtk.TextView.__init__(self)
#the identity of the return value of get_buffer() doesn't seem to be
#stable. before, we used a property, but now we just get it once and
#leave it at that because GTK complains about the non-identicality
#of them.
self.gui = gui
self.buffer = self.get_buffer()
self.paused = False
self.end_mark = self.buffer.create_mark('end_mark',
self.buffer.get_end_iter(),
False)
self.timestamps = RunLengthList({})
self.connect('focus-in-event', self.got_focus_cb)
self.set_property("has-tooltip", True)
self.connect("query-tooltip", self.display_tooltip_cb)
self.set_editable(False)
self.set_cursor_visible(False)
self.set_wrap_mode(gtk.WRAP_CHAR)
self.modify_base(gtk.STATE_NORMAL, gtk.gdk.Color(0, 0, 0)) #sic
self.modify_font(pango.FontDescription('terminus 12'))
self._tags = {}
def got_focus_cb(self, widget, event):
"""We never want focus; the command line automatically lets us have
all incoming keypresses that we're interested in.
"""
if self.gui:
self.gui.command_line.grab_focus()
def display_tooltip_cb(self, widget, wx, wy, keyboard_mode, tooltip):
"""Display a timestamp for the line the user hovers over."""
#XXX: I'm not sure this is converting between coordinates right, I
#need to double-check the GTK docs.
bx, by = self.window_to_buffer_coords(gtk.TEXT_WINDOW_WIDGET, wx, wy)
textiter = self.get_iter_at_location(bx, by)
#GTK is very keen for the above code to succeed, but really it's only
#useful for us if there's a tooltip above a bit of text, as opposed
#to the ENTIRE FREAKING WIDGET. So test to see if bx and by can
#roundtrip in the character's pixel rectangle
rect = self.get_iter_location(textiter)
if not 0 <= bx - rect.x <= rect.width or \
not 0 <= by - rect.y <= rect.height:
return False
received_at = self.timestamps.get_at(textiter.get_offset())
tooltip.set_text(received_at.strftime("Received at: %H:%M:%S"))
return True
def pause(self):
"""Stop autoscrolling to new data."""
if not self.paused:
self.paused = True
if self.gui:
self.gui.paused_label.set_markup("PAUSED")
def unpause(self):
"""Restart autoscrolling to new data.
This does not automatically scroll to the buffer's end.
"""
if self.paused:
self.paused = False
if self.gui:
self.gui.paused_label.set_markup("")
#scroll to the end of output
self.scroll_mark_onscreen(self.end_mark)
def show_metaline(self, metaline):
"""Write a span of text to the window using the colours defined in
the other channels.
This will autoscroll to the end if we are not paused.
"""
bytes = metaline.line.encode('utf-8')
end_iter = self.buffer.get_end_iter()
offset = end_iter.get_offset()
self.buffer.insert(end_iter, bytes)
self.apply_colours(metaline.fores, offset, len(metaline.line))
self.apply_colours(metaline.backs, offset, len(metaline.line))
if not self.paused:
self.scroll_mark_onscreen(self.end_mark)
else:
if self.gui:
self.gui.paused_label.set_markup("<span foreground='#FFFFFF' "
"background='#000000'>"
"MORE - PAUSED</span>")
#this is a bit naughty, we're bypassing the RLL's safety thingies
#anyway, we need to store the offset that -begins- the chunk of text
self.timestamps[offset] = datetime.now()
def apply_colours(self, colours, offset, end_offset):
"""Apply a RunLengthList of colours to the buffer, starting at
offset characters in.
"""
end_iter = self.buffer.get_iter_at_offset(offset)
for tag, end in zip(map(self.fetch_tag, colours.values()),
colours.keys()[1:] + [end_offset]):
start_iter = end_iter
end_iter = self.buffer.get_iter_at_offset(end + offset)
self.buffer.apply_tag(tag, start_iter, end_iter)
def fetch_tag(self, colour):
"""Check to see if a colour is in the tag table. If it isn't, add it.
Returns the tag.
"""
#use our own tag table, because GTK's is too slow
if colour in self._tags:
tag = self._tags[colour]
else:
tag = self.buffer.create_tag(None)
tag.set_property(colour.ground + 'ground', '#' + colour.as_hex)
tag.set_property(colour.ground + 'ground-set', True)
self._tags[colour] = tag
return tag
def test_get_at_works_on_colour_change():
rll = RunLengthList({0: 'foo', 2: 'bar'})
assert rll.get_at(2) == 'bar'
def test_get_at_works_after_last_index():
rll = RunLengthList({0: 'foo', 2: 'bar'})
assert rll.get_at(10) == 'bar'
def test_get_at_works_right_before_colour_change():
rll = RunLengthList({0: 'foo', 2: 'bar'})
assert rll.get_at(1) == 'foo'
def test_get_at_works_for_index_0():
rll = RunLengthList({0: 'foo', 1: 'bar'})
assert rll.get_at(0) == 'foo'