def __init__(self, text=None, attr=None, cs=None,
cursor=None, maxcol=None, check_width=True):
"""
text -- list of strings, one for each line
attr -- list of run length encoded attributes for text
cs -- list of run length encoded character set for text
cursor -- (x,y) of cursor or None
maxcol -- screen columns taken by this canvas
check_width -- check and fix width of all lines in text
"""
Canvas.__init__(self)
if text == None:
text = []
if check_width:
widths = []
for t in text:
if type(t) != bytes:
raise CanvasError("Canvas text must be plain strings encoded in the screen's encoding", repr(text))
widths.append( calc_width( t, 0, len(t)) )
else:
assert type(maxcol) == int
widths = [maxcol] * len(text)
if maxcol is None:
if widths:
# find maxcol ourselves
maxcol = max(widths)
else:
maxcol = 0
if attr == None:
attr = [[] for x in range(len(text))]
if cs == None:
cs = [[] for x in range(len(text))]
# pad text and attr to maxcol
for i in range(len(text)):
w = widths[i]
if w > maxcol:
raise CanvasError("Canvas text is wider than the maxcol specified \n%r\n%r\n%r"%(maxcol,widths,text))
if w < maxcol:
text[i] = text[i] + bytes().rjust(maxcol-w)
a_gap = len(text[i]) - rle_len( attr[i] )
if a_gap < 0:
raise CanvasError("Attribute extends beyond text \n%r\n%r" % (text[i],attr[i]) )
if a_gap:
rle_append_modify( attr[i], (None, a_gap))
cs_gap = len(text[i]) - rle_len( cs[i] )
if cs_gap < 0:
raise CanvasError("Character Set extends beyond text \n%r\n%r" % (text[i],cs[i]) )
if cs_gap:
rle_append_modify( cs[i], (None, cs_gap))
self._attr = attr
self._cs = cs
self.cursor = cursor
self._text = text
self._maxcol = maxcol
def __init__(self, text=None, attr=None, cs=None,
cursor=None, maxcol=None, check_width=True):
"""
text -- list of strings, one for each line
attr -- list of run length encoded attributes for text
cs -- list of run length encoded character set for text
cursor -- (x,y) of cursor or None
maxcol -- screen columns taken by this canvas
check_width -- check and fix width of all lines in text
"""
Canvas.__init__(self)
if text == None:
text = []
if check_width:
widths = []
for t in text:
if type(t) != bytes:
raise CanvasError("Canvas text must be plain strings encoded in the screen's encoding", repr(text))
widths.append( calc_width( t, 0, len(t)) )
else:
assert type(maxcol) == int
widths = [maxcol] * len(text)
if maxcol is None:
if widths:
# find maxcol ourselves
maxcol = max(widths)
else:
maxcol = 0
if attr == None:
attr = [[] for x in range(len(text))]
if cs == None:
cs = [[] for x in range(len(text))]
# pad text and attr to maxcol
for i in range(len(text)):
w = widths[i]
if w > maxcol:
raise CanvasError("Canvas text is wider than the maxcol specified \n%r\n%r\n%r"%(maxcol,widths,text))
if w < maxcol:
text[i] = text[i] + bytes().rjust(maxcol-w)
a_gap = len(text[i]) - rle_len( attr[i] )
if a_gap < 0:
raise CanvasError("Attribute extends beyond text \n%r\n%r" % (text[i],attr[i]) )
if a_gap:
rle_append_modify( attr[i], (None, a_gap))
cs_gap = len(text[i]) - rle_len( cs[i] )
if cs_gap < 0:
raise CanvasError("Character Set extends beyond text \n%r\n%r" % (text[i],cs[i]) )
if cs_gap:
rle_append_modify( cs[i], (None, cs_gap))
self._attr = attr
self._cs = cs
self.cursor = cursor
self._text = text
self._maxcol = maxcol
def test_rle_append(self):
rle0 = [('A', 10), ('B', 15)]
rle3, rle4 = rle0[:], rle0[:]
util.rle_append_modify(rle3, ('B', 5))
util.rle_append_modify(rle4, ('K', 1))
self.assertListEqual(rle3, [('A', 10), ('B', 20)])
self.assertListEqual(rle4, [('A', 10), ('B', 15), ('K', 1)])
def attrrange( start_offs, end_offs, destw ):
"""
Add attributes based on attributes between
start_offs and end_offs.
"""
if start_offs == end_offs:
[(at,run)] = arange(start_offs,end_offs)
rle_append_modify( linea, ( at, destw ))
return
if destw == end_offs-start_offs:
for at, run in arange(start_offs,end_offs):
rle_append_modify( linea, ( at, run ))
return
# encoded version has different width
o = start_offs
for at, run in arange(start_offs, end_offs):
if o+run == end_offs:
rle_append_modify( linea, ( at, destw ))
return
tseg = text[o:o+run]
tseg, cs = apply_target_encoding( tseg )
segw = rle_len(cs)
rle_append_modify( linea, ( at, segw ))
o += run
destw -= segw
def attrrange( start_offs, end_offs, destw ):
"""
Add attributes based on attributes between
start_offs and end_offs.
"""
if start_offs == end_offs:
[(at,run)] = arange(start_offs,end_offs)
rle_append_modify( linea, ( at, destw ))
return
if destw == end_offs-start_offs:
for at, run in arange(start_offs,end_offs):
rle_append_modify( linea, ( at, run ))
return
# encoded version has different width
o = start_offs
for at, run in arange(start_offs, end_offs):
if o+run == end_offs:
rle_append_modify( linea, ( at, destw ))
return
tseg = text[o:o+run]
tseg, cs = apply_target_encoding( tseg )
segw = rle_len(cs)
rle_append_modify( linea, ( at, segw ))
o += run
destw -= segw
def render(self, size, focus=False):
# Build a view of the architecture
viewport = []
attrs = []
map = self.dungeon.current_floor
maxcol, maxrow = size
top, left = 0, 0
# TODO actually compute the offset more cleverly here :)
# TODO optimize me more?? somehow?
for screen_row in range(maxrow):
viewport_chars = []
attr_row = []
if screen_row < top or screen_row >= map.size.rows + top:
# Outside the bounds of the map; just show blank space
self._render_padding(maxcol, chars=viewport_chars, attrs=attr_row)
viewport.append(b''.join(viewport_chars))
attrs.append(attr_row)
continue
# Blank space for the left padding
self._render_padding(left, chars=viewport_chars, attrs=attr_row)
for col in range(map.size.cols):
pos = Position(screen_row - top, col)
char, palette = rendering_for(map.tile(pos).topmost)
# XXX this is getting way inefficient man; surely a better approach
encoded_char = char.encode(urwid.util._target_encoding)
viewport_chars.append(encoded_char)
rle_append_modify(attr_row, (palette, len(encoded_char)))
# Blank space for the right padding
self._render_padding((maxcol - map.size.cols - left),
chars=viewport_chars, attrs=attr_row)
viewport.append(b''.join(viewport_chars))
attrs.append(attr_row)
map_canv = urwid.TextCanvas(viewport, attr=attrs)
return map_canv
def _render_padding(self, width, chars, attrs):
if not width:
return
encoded_char = (self.empty_char * width).encode(urwid.util._target_encoding)
chars.append(encoded_char)
rle_append_modify(attrs, (None, len(encoded_char)))
