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# Copyright (C) 2010, Aleksey Lim
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
import gtk
import gobject
import pango
TEXT_HEIGHT = gtk.EventBox().create_pango_layout('W').get_pixel_size()[1]
class Entry(gtk.TextView):
"""One paragraph string entry with additional features
* multi line mode for wrapping long lines
* having wrapping and ellipses simultaneously in inactive mode
* accent in inactive mode
NOTE: Use text property instead of buffer, buffer's value will be
changed in inactive mode
"""
def __init__(self, **kwargs):
self._max_line_count = 1
self._text = None
self._button_pressed = False
gobject.GObject.__init__(self, **kwargs)
self._tag = self.props.buffer.create_tag()
self._tag.props.weight = pango.WEIGHT_BOLD
gtk.TextView.set_accepts_tab(self, False)
self.set_max_line_count(self._max_line_count)
self.connect('key-press-event', self.__key_press_event_cb)
self.connect('focus-in-event', self.__focus_in_event_cb)
self.connect('focus-out-event', self.__focus_out_event_cb)
self.connect('button-press-event', self.__button_press_event_cb)
self.connect('button-release-event', self.__button_release_event_cb)
self.props.buffer.connect('changed', self.__buffer_changed_cb)
def set_accepts_tab(self, value):
# accepts_tab cannot be set by users
assert(False)
def get_accepts_tab(self):
return gtk.TextView.get_accepts_tab()
accepts_tab = gobject.property(
getter=get_accepts_tab, setter=set_accepts_tab)
def set_wrap_mode(self, value):
# accepts_tab cannot be set by users
assert(False)
def get_wrap_mode(self):
return gtk.TextView.get_wrap_mode()
wrap_mode = gobject.property(
getter=get_wrap_mode, setter=set_wrap_mode)
def get_max_line_count(self):
return self._max_line_count
def set_max_line_count(self, max_line_count):
self._max_line_count = max(1, max_line_count)
max_line_count = gobject.property(
getter=get_max_line_count, setter=set_max_line_count)
def get_text(self):
return self._text
def set_text(self, value):
self._text = value
self.props.buffer.props.text = value
if not self.props.has_focus:
self._set_accent_mode()
text = gobject.property(getter=get_text, setter=set_text)
def do_size_allocate(self, allocation):
gtk.TextView.do_size_allocate(self, allocation)
if not self.props.has_focus:
self._set_accent_mode()
def _line_count(self):
iter = self.props.buffer.get_start_iter()
for lines in xrange(self.max_line_count):
if not self.forward_display_line(iter):
break
return lines + 1
def _set_edit_mode(self):
if self.max_line_count == 1:
gtk.TextView.set_wrap_mode(self, gtk.WRAP_NONE)
self._set_height_request(1)
else:
gtk.TextView.set_wrap_mode(self, gtk.WRAP_WORD_CHAR)
self._set_height_request(self._line_count())
def _set_accent_mode(self):
if self._text is None:
return
gtk.TextView.set_wrap_mode(self, gtk.WRAP_WORD_CHAR)
buf = self.props.buffer
buf.props.text = self._text
def accent():
start = buf.get_start_iter()
end = buf.get_end_iter()
buf.apply_tag(self._tag, start, end)
def last_offset():
iter = buf.get_start_iter()
for __ in xrange(self.max_line_count):
if not self.forward_display_line(iter):
return None
return iter.get_offset()
accent()
offset = last_offset()
while offset is not None:
offset = len(buf.props.text[:offset].rstrip())
buf.props.text = buf.props.text[:offset] + '...'
accent()
offset = last_offset()
accent()
self._set_height_request(self._line_count())
def _select(self):
buf = self.props.buffer
if not buf.get_has_selection():
self.scroll_to_iter(buf.get_end_iter(), 0, False)
buf.select_range(buf.get_end_iter(), buf.get_start_iter())
def _set_height_request(self, lines_number):
new_height = TEXT_HEIGHT * lines_number
width, old_height = self.get_size_request()
if new_height != old_height:
self.set_size_request(width, new_height)
self.parent.check_resize()
def __buffer_changed_cb(self, buffer):
if self.props.has_focus and self.max_line_count > 1:
self._set_height_request(self._line_count())
return False
def __button_press_event_cb(self, widget, event):
self._button_pressed = self.props.has_focus or -1
return False
def __button_release_event_cb(self, widget, event):
if self._button_pressed == -1:
self._select()
self._button_pressed = False
return False
def __focus_in_event_cb(self, widget, event):
self.props.buffer.props.text = self._text
self._set_edit_mode()
self.parent.check_resize()
if not self._button_pressed:
self._select()
return False
def __focus_out_event_cb(self, widget, event):
self._text = self.props.buffer.props.text
self._set_accent_mode()
self.parent.check_resize()
return False
def __key_press_event_cb(self, widget, event):
ignore_mask = [gtk.keysyms.Return]
if self.max_line_count == 1:
ignore_mask.extend([gtk.keysyms.Up, gtk.keysyms.Down])
if event.keyval in ignore_mask:
key_event = event
if event.keyval in [gtk.keysyms.Up]:
# change Shift mask for backwards keys
if key_event.state & gtk.gdk.SHIFT_MASK:
key_event.state &= ~gtk.gdk.SHIFT_MASK
else:
key_event.state |= gtk.gdk.SHIFT_MASK
key_event.keyval = gtk.keysyms.Tab
key_event.hardware_keycode = 0
gtk.main_do_event(key_event)
return True
elif event.keyval == gtk.keysyms.Escape:
self.props.buffer.props.text = self._text
return False
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