def make_pango_layout(view, widget=None):
doc = view.document
yoffset, xoffset = map(int, view.scroll_pos)
chars, rows = map(int, view.textbox_dimensions)
colours = view.colours
tab_size = doc.tab_size
if not widget:
widget = view.textarea.drawingarea
# only tokens for the text that's on the screen
tokens = doc.tokenizer.get_normalised_tokens(yoffset, yoffset + rows)
# pango layout
# doc_lines = doc.get_lines(yoffset, yoffset+rows)
start_index = doc.line_offsets[yoffset]
if yoffset + rows < doc.num_lines:
end_index = doc.line_offsets[yoffset + rows]
else:
end_index = len(doc.content)
doc_lines = doc.content[start_index:end_index].splitlines()
lines = []
for line in doc_lines:
line = line.replace("\t", " " * doc.tab_size)
lines.append(pad(line[xoffset : xoffset + chars], chars, tab_size))
pl = widget.create_pango_layout("\n".join(lines))
# build the list of pango attributes
attrs = pango.AttrList()
start_index = 0
ltokens = line_tokens(tokens, tab_size)
for ttype, length in clipped_tokens(ltokens, xoffset, chars):
if not ttype is Token.Text.Whitespace:
style = get_style_for_ttype(ttype)
fg = colours[style]["pango"]
fg_attr = pango.AttrForeground(
red=fg.red, green=fg.green, blue=fg.blue, start_index=start_index, end_index=start_index + length
)
attrs.insert(fg_attr)
if colours[style].get("bold", False):
wt_attr = pango.AttrWeight(pango.WEIGHT_BOLD, start_index=start_index, end_index=start_index + length)
attrs.insert(wt_attr)
if colours[style].get("italic", False):
st_attr = pango.AttrStyle(pango.STYLE_ITALIC, start_index=start_index, end_index=start_index + length)
attrs.insert(st_attr)
start_index += length
pl.set_attributes(attrs)
return pl
def test_pad():
s = '\t'
line = pad(s, 80, 8)
assert len(line) == 73
return True
def get_cursor_coords(self, (maxcol,)):
col = len(self.get_text())
return col, 0
def rows(self, (maxcol,), focus=False):
return 1
def render(self, (maxcol,), focus=False):
text = self.get_text()
cursor = None
if focus:
cursor = self.get_cursor_coords((maxcol,))
return urwid.TextCanvas([pad(text, maxcol)], \
attr=[[('statusbar', maxcol)]], cursor=cursor)
def keypress(self, (maxcol,), key):
if key in self.options or self.default_option:
if not key in self.options and self.default_option:
# if the key is not a valid option, make it trigger the default
# option
key = self.default_option
if self.callbacks.has_key(key):
self.callbacks[key]()
self.hide()
return None
class UrwidFileDialog(object):
def __init__(self, editor):
