def process_event(self, event):
if isinstance(event, KeyboardEvent):
if event.key_code == Screen.KEY_BACK and not self._readonly:
if self._column > 0:
# Delete character in front of cursor.
self._set_and_check_value("".join([
self._value[:self._column - 1],
self._value[self._column:]
]))
self._column -= 1
elif event.key_code == Screen.KEY_DELETE and not self._readonly:
if self._column < len(self._value):
self._set_and_check_value("".join([
self._value[:self._column],
self._value[self._column + 1:]
]))
elif event.key_code == Screen.KEY_LEFT:
self._column -= 1
self._column = max(self._column, 0)
elif event.key_code == Screen.KEY_RIGHT:
self._column += 1
self._column = min(len(self._value), self._column)
elif event.key_code == Screen.KEY_HOME:
self._column = 0
elif event.key_code == Screen.KEY_END:
self._column = len(self._value)
elif event.key_code >= 32 and not self._readonly:
# Enforce required max length - swallow event if not allowed
if self._max_length is None or len(
self._value) < self._max_length:
# Insert any visible text at the current cursor position.
self._set_and_check_value(
chr(event.key_code).join([
self._value[:self._column],
self._value[self._column:]
]))
self._column += 1
else:
# Ignore any other key press.
return event
elif isinstance(event, MouseEvent):
# Mouse event - rebase coordinates to Frame context.
if event.buttons != 0:
if self.is_mouse_over(event, include_label=False):
self._column = (self._start_column + _get_offset(
self._value[self._start_column:], event.x - self._x -
self._offset, self._frame.canvas.unicode_aware))
self._column = min(len(self._value), self._column)
self._column = max(0, self._column)
return None
# Ignore other mouse events.
return event
else:
# Ignore other events
return event
# If we got here, we processed the event - swallow it.
return None
def process_event(self, event):
def _join(a, b):
if self._parser:
return ColouredText(a, self._parser,
colour=b[0].first_colour).join(b)
return a.join(b)
if isinstance(event, KeyboardEvent):
old_value = copy(self._value)
if event.key_code in [10, 13] and not self._readonly:
# Split and insert line on CR or LF.
self._value.insert(self._line + 1,
self._value[self._line][self._column:])
self._value[self._line] = self._value[
self._line][:self._column]
self._line += 1
self._column = 0
elif event.key_code == Screen.KEY_BACK and not self._readonly:
if self._column > 0:
# Delete character in front of cursor.
self._value[self._line] = _join("", [
self._value[self._line][:self._column - 1],
self._value[self._line][self._column:]
])
self._column -= 1
else:
if self._line > 0:
# Join this line with previous
self._line -= 1
self._column = len(self._value[self._line])
self._value[self._line] += \
self._value.pop(self._line + 1)
elif event.key_code == Screen.KEY_DELETE and not self._readonly:
if self._column < len(self._value[self._line]):
self._value[self._line] = _join("", [
self._value[self._line][:self._column],
self._value[self._line][self._column + 1:]
])
else:
if self._line < len(self._value) - 1:
# Join this line with next
self._value[self._line] += \
self._value.pop(self._line + 1)
elif event.key_code == Screen.KEY_PAGE_UP:
self._change_line(-self._h)
elif event.key_code == Screen.KEY_PAGE_DOWN:
self._change_line(self._h)
elif event.key_code == Screen.KEY_UP:
self._change_line(-1)
elif event.key_code == Screen.KEY_DOWN:
self._change_line(1)
elif event.key_code == Screen.KEY_LEFT:
# Move left one char, wrapping to previous line if needed.
self._column -= 1
if self._column < 0:
if self._line > 0:
self._line -= 1
self._column = len(self._value[self._line])
else:
self._column = 0
elif event.key_code == Screen.KEY_RIGHT:
# Move right one char, wrapping to next line if needed.
self._column += 1
if self._column > len(self._value[self._line]):
if self._line < len(self._value) - 1:
self._line += 1
self._column = 0
else:
self._column = len(self._value[self._line])
elif event.key_code == Screen.KEY_HOME:
# Go to the start of this line
self._column = 0
elif event.key_code == Screen.KEY_END:
# Go to the end of this line
self._column = len(self._value[self._line])
elif event.key_code >= 32 and not self._readonly:
# Insert any visible text at the current cursor position.
self._value[self._line] = _join(chr(event.key_code), [
self._value[self._line][:self._column],
self._value[self._line][self._column:]
])
self._column += 1
else:
# Ignore any other key press.
return event
# If we got here we might have changed the value...
if old_value != self._value:
self._reflowed_text_cache = None
if self._on_change:
self._on_change()
elif isinstance(event, MouseEvent):
# Mouse event - rebase coordinates to Frame context.
if event.buttons != 0:
if self.is_mouse_over(event, include_label=False):
# Find the line first.
clicked_line = event.y - self._y + self._start_line
if self._line_wrap:
# Line-wrapped text needs to be mapped to visible lines
display_text = self._reflowed_text
clicked_line = min(clicked_line, len(display_text) - 1)
text_line = display_text[clicked_line][1]
text_col = display_text[clicked_line][2]
else:
# non-wrapped just needs a little end protection
text_line = max(0, clicked_line)
text_col = 0
self._line = min(len(self._value) - 1, text_line)
# Now figure out location in text based on width of each glyph.
self._column = (
self._start_column + text_col + _get_offset(
str(self._value[self._line][self._start_column +
text_col:]),
event.x - self._x - self._offset,
self._frame.canvas.unicode_aware))
self._column = min(len(self._value[self._line]),
self._column)
self._column = max(0, self._column)
return None
# Ignore other mouse events.
return event
else:
# Ignore other events
return event
# If we got here, we processed the event - swallow it.
return None