gajim-plural/gajim/gtkgui_helpers.py

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# Copyright (C) 2003-2014 Yann Leboulanger <asterix AT lagaule.org>
# Copyright (C) 2005-2006 Dimitur Kirov <dkirov AT gmail.com>
# Copyright (C) 2005-2007 Nikos Kouremenos <kourem AT gmail.com>
# Copyright (C) 2006 Travis Shirk <travis AT pobox.com>
# Copyright (C) 2006-2007 Junglecow J <junglecow AT gmail.com>
# Copyright (C) 2006-2008 Jean-Marie Traissard <jim AT lapin.org>
# Copyright (C) 2007 James Newton <redshodan AT gmail.com>
# Julien Pivotto <roidelapluie AT gmail.com>
# Copyright (C) 2007-2008 Stephan Erb <steve-e AT h3c.de>
# Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
#
# This file is part of Gajim.
#
# Gajim 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; version 3 only.
#
# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
import xml.sax.saxutils
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GdkPixbuf
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from gi.repository import GLib
from gi.repository import Pango
import cairo
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import os
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import sys
import math
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import xml.etree.ElementTree as ET
try:
from PIL import Image
except:
pass
from io import BytesIO
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import logging
log = logging.getLogger('gajim.gtkgui_helpers')
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from gajim.common import i18n
from gajim.common import app
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from gajim.common import configpaths
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from gajim.common.const import PEPEventType, ACTIVITIES, MOODS
gtk_icon_theme = Gtk.IconTheme.get_default()
gtk_icon_theme.append_search_path(configpaths.get('ICONS'))
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class Color:
BLACK = Gdk.RGBA(red=0, green=0, blue=0, alpha=1)
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GREEN = Gdk.RGBA(red=115/255, green=210/255, blue=22/255, alpha=1)
RED = Gdk.RGBA(red=204/255, green=0, blue=0, alpha=1)
GREY = Gdk.RGBA(red=195/255, green=195/255, blue=192/255, alpha=1)
ORANGE = Gdk.RGBA(red=245/255, green=121/255, blue=0/255, alpha=1)
def get_icon_pixmap(icon_name, size=16, color=None, quiet=False):
try:
iconinfo = gtk_icon_theme.lookup_icon(icon_name, size, 0)
if not iconinfo:
raise GLib.GError
if color:
pixbuf, was_symbolic = iconinfo.load_symbolic(*color)
return pixbuf
return iconinfo.load_icon()
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except GLib.GError as e:
if not quiet:
log.error('Unable to load icon %s: %s' % (icon_name, str(e)))
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def get_icon_path(icon_name, size=16):
try:
icon_info = gtk_icon_theme.lookup_icon(icon_name, size, 0)
if icon_info == None:
log.error('Icon not found: %s' % icon_name)
return ""
else:
return icon_info.get_filename()
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except GLib.GError as e:
log.error("Unable to find icon %s: %s" % (icon_name, str(e)))
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HAS_PYWIN32 = True
if os.name == 'nt':
try:
import win32file
import win32con
import pywintypes
except ImportError:
HAS_PYWIN32 = False
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from gajim.common import helpers
def get_total_screen_geometry():
screen = Gdk.Screen.get_default()
window = Gdk.Screen.get_root_window(screen)
w, h = window.get_width(), window.get_height()
log.debug('Get screen geometry: %s %s', w, h)
return w, h
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def add_image_to_button(button, icon_name):
img = Gtk.Image()
path_img = get_icon_path(icon_name)
img.set_from_file(path_img)
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button.set_image(img)
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def get_image_button(icon_name, tooltip, toggle=False):
if toggle:
button = Gtk.ToggleButton()
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icon = get_icon_pixmap(icon_name)
image = Gtk.Image()
image.set_from_pixbuf(icon)
button.set_image(image)
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else:
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button = Gtk.Button.new_from_icon_name(
icon_name, Gtk.IconSize.MENU)
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button.set_tooltip_text(tooltip)
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return button
def get_gtk_builder(file_name, widget=None):
file_path = os.path.join(configpaths.get('GUI'), file_name)
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builder = Gtk.Builder()
builder.set_translation_domain(i18n.DOMAIN)
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if sys.platform == "win32":
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# This is a workaround for non working translation on Windows
tree = ET.parse(file_path)
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for node in tree.iter():
if 'translatable' in node.attrib:
node.text = _(node.text)
xml_text = ET.tostring(tree.getroot(),
encoding='unicode',
method='xml')
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if widget is not None:
builder.add_objects_from_string(xml_text, [widget])
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else:
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# Workaround
# https://gitlab.gnome.org/GNOME/pygobject/issues/255
Gtk.Builder.__mro__[1].add_from_string(
builder, xml_text, len(xml_text.encode("utf-8")))
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else:
if widget is not None:
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builder.add_objects_from_file(file_path, [widget])
else:
builder.add_from_file(file_path)
return builder
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def get_completion_liststore(entry):
"""
Create a completion model for entry widget completion list consists of
(Pixbuf, Text) rows
"""
completion = Gtk.EntryCompletion()
liststore = Gtk.ListStore(str, str)
render_pixbuf = Gtk.CellRendererPixbuf()
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completion.pack_start(render_pixbuf, False)
completion.add_attribute(render_pixbuf, 'icon_name', 0)
render_text = Gtk.CellRendererText()
completion.pack_start(render_text, True)
completion.add_attribute(render_text, 'text', 1)
completion.set_property('text_column', 1)
completion.set_model(liststore)
entry.set_completion(completion)
return liststore
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def move_window(window, x, y):
"""
Move the window, but also check if out of screen
"""
screen_w, screen_h = get_total_screen_geometry()
if x < 0:
x = 0
if y < 0:
y = 0
w, h = window.get_size()
if x + w > screen_w:
x = screen_w - w
if y + h > screen_h:
y = screen_h - h
window.move(x, y)
def resize_window(window, w, h):
"""
Resize window, but also checks if huge window or negative values
"""
screen_w, screen_h = get_total_screen_geometry()
if not w or not h:
return
if w > screen_w:
w = screen_w
if h > screen_h:
h = screen_h
window.resize(abs(w), abs(h))
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def at_the_end(widget):
"""Determines if a Scrollbar in a GtkScrolledWindow is at the end.
Args:
widget (GtkScrolledWindow)
Returns:
bool: The return value is True if at the end, False if not.
"""
adj_v = widget.get_vadjustment()
max_scroll_pos = adj_v.get_upper() - adj_v.get_page_size()
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return adj_v.get_value() == max_scroll_pos
def scroll_to_end(widget):
"""Scrolls to the end of a GtkScrolledWindow.
Args:
widget (GtkScrolledWindow)
Returns:
bool: The return value is False so it can be used with GLib.idle_add.
"""
adj_v = widget.get_vadjustment()
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if adj_v is None:
# This can happen when the Widget is already destroyed when called
# from GLib.idle_add
return False
max_scroll_pos = adj_v.get_upper() - adj_v.get_page_size()
adj_v.set_value(max_scroll_pos)
adj_h = widget.get_hadjustment()
adj_h.set_value(0)
return False
class ServersXMLHandler(xml.sax.ContentHandler):
def __init__(self):
xml.sax.ContentHandler.__init__(self)
self.servers = []
def startElement(self, name, attributes):
if name == 'item':
if 'jid' in attributes.getNames():
self.servers.append(attributes.getValue('jid'))
def endElement(self, name):
pass
def parse_server_xml(path_to_file):
try:
handler = ServersXMLHandler()
xml.sax.parse(path_to_file, handler)
return handler.servers
# handle exception if unable to open file
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except IOError as message:
print(_('Error reading file:') + str(message), file=sys.stderr)
# handle exception parsing file
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except xml.sax.SAXParseException as message:
print(_('Error parsing file:') + str(message), file=sys.stderr)
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def set_unset_urgency_hint(window, unread_messages_no):
"""
Sets/unset urgency hint in window argument depending if we have unread
messages or not
"""
if app.config.get('use_urgency_hint'):
if unread_messages_no > 0:
window.props.urgency_hint = True
else:
window.props.urgency_hint = False
def get_pixbuf_from_data(file_data):
"""
Get image data and returns GdkPixbuf.Pixbuf
"""
pixbufloader = GdkPixbuf.PixbufLoader()
try:
pixbufloader.write(file_data)
pixbufloader.close()
pixbuf = pixbufloader.get_pixbuf()
except GLib.GError:
pixbufloader.close()
log.warning('loading avatar using pixbufloader failed, trying to '
'convert avatar image using pillow')
try:
avatar = Image.open(BytesIO(file_data)).convert("RGBA")
array = GLib.Bytes.new(avatar.tobytes())
width, height = avatar.size
pixbuf = GdkPixbuf.Pixbuf.new_from_bytes(
array, GdkPixbuf.Colorspace.RGB,
True, 8, width, height, width * 4)
except Exception:
log.warning('Could not use pillow to convert avatar image, '
'image cannot be displayed', exc_info=True)
return
return pixbuf
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def get_cursor(attr):
display = Gdk.Display.get_default()
cursor = getattr(Gdk.CursorType, attr)
return Gdk.Cursor.new_for_display(display, cursor)
def get_current_desktop(window):
"""
Return the current virtual desktop for given window
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NOTE: Window is a GDK window.
"""
prop = window.property_get('_NET_CURRENT_DESKTOP')
if prop is None: # it means it's normal window (not root window)
# so we look for it's current virtual desktop in another property
prop = window.property_get('_NET_WM_DESKTOP')
if prop is not None:
# f.e. prop is ('CARDINAL', 32, [0]) we want 0 or 1.. from [0]
current_virtual_desktop_no = prop[2][0]
return current_virtual_desktop_no
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def possibly_move_window_in_current_desktop(window):
"""
Moves GTK window to current virtual desktop if it is not in the current
virtual desktop
NOTE: Window is a GDK window.
"""
#TODO: property_get doesn't work:
#prop_atom = Gdk.Atom.intern('_NET_CURRENT_DESKTOP', False)
#type_atom = Gdk.Atom.intern("CARDINAL", False)
#w = Gdk.Screen.get_default().get_root_window()
#Gdk.property_get(w, prop_atom, type_atom, 0, 9999, False)
return False
if os.name == 'nt':
return False
root_window = Gdk.Screen.get_default().get_root_window()
# current user's vd
current_virtual_desktop_no = get_current_desktop(root_window)
# vd roster window is in
window_virtual_desktop = get_current_desktop(window.window)
# if one of those is None, something went wrong and we cannot know
# VD info, just hide it (default action) and not show it afterwards
if None not in (window_virtual_desktop, current_virtual_desktop_no):
if current_virtual_desktop_no != window_virtual_desktop:
# we are in another VD that the window was
# so show it in current VD
window.present()
return True
return False
def file_is_locked(path_to_file):
"""
Return True if file is locked
NOTE: Windows only.
"""
if os.name != 'nt': # just in case
return
if not HAS_PYWIN32:
return
secur_att = pywintypes.SECURITY_ATTRIBUTES()
secur_att.Initialize()
try:
# try make a handle for READING the file
hfile = win32file.CreateFile(
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path_to_file, # path to file
win32con.GENERIC_READ, # open for reading
0, # do not share with other proc
secur_att,
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win32con.OPEN_EXISTING, # existing file only
win32con.FILE_ATTRIBUTE_NORMAL, # normal file
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0 # no attr. template
)
except pywintypes.error:
return True
else: # in case all went ok, close file handle (go to hell WinAPI)
hfile.Close()
return False
def get_fade_color(treeview, selected, focused):
"""
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Get a gdk RGBA color that is between foreground and background in 0.3
0.7 respectively colors of the cell for the given treeview
"""
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context = treeview.get_style_context()
if selected:
if focused: # is the window focused?
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state = Gtk.StateFlags.SELECTED
else: # is it not? NOTE: many gtk themes change bg on this
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state = Gtk.StateFlags.ACTIVE
else:
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state = Gtk.StateFlags.NORMAL
bg = context.get_property('background-color', state)
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fg = context.get_color(state)
p = 0.3 # background
q = 0.7 # foreground # p + q should do 1.0
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return Gdk.RGBA(bg.red*p + fg.red*q, bg.green*p + fg.green*q,
bg.blue*p + fg.blue*q)
def make_gtk_month_python_month(month):
"""
GTK starts counting months from 0, so January is 0 but Python's time start
from 1, so align to Python
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NOTE: Month MUST be an integer.
"""
return month + 1
def make_python_month_gtk_month(month):
return month - 1
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def make_pixbuf_grayscale(pixbuf):
pixbuf2 = pixbuf.copy()
pixbuf.saturate_and_pixelate(pixbuf2, 0.0, False)
return pixbuf2
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def get_possible_button_event(event):
"""
Mouse or keyboard caused the event?
"""
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if event.type == Gdk.EventType.KEY_PRESS:
return 0 # no event.button so pass 0
# BUTTON_PRESS event, so pass event.button
return event.button
def destroy_widget(widget):
widget.destroy()
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def scale_with_ratio(size, width, height):
if height == width:
return size, size
if height > width:
ratio = height / float(width)
return int(size / ratio), size
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else:
ratio = width / float(height)
return size, int(size / ratio)
def scale_pixbuf(pixbuf, size):
width, height = scale_with_ratio(size,
pixbuf.get_width(),
pixbuf.get_height())
return pixbuf.scale_simple(width, height,
GdkPixbuf.InterpType.BILINEAR)
def scale_pixbuf_from_data(data, size):
pixbuf = get_pixbuf_from_data(data)
return scale_pixbuf(pixbuf, size)
def on_avatar_save_as_menuitem_activate(widget, avatar, default_name=''):
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from gajim.gtk import ErrorDialog
from gajim.gtk import ConfirmationDialog
from gajim.gtk import FTOverwriteConfirmationDialog
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from gajim.gtk.filechoosers import AvatarSaveDialog
def on_continue(response, file_path):
if response < 0:
return
app.config.set('last_save_dir', os.path.dirname(file_path))
if isinstance(avatar, str):
# We got a SHA
pixbuf = app.interface.get_avatar(avatar)
else:
# We got a pixbuf
pixbuf = avatar
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extension = os.path.splitext(file_path)[1]
if not extension:
# Silently save as Jpeg image
image_format = 'png'
file_path += '.png'
else:
image_format = extension[1:] # remove leading dot
# Save image
try:
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pixbuf.savev(file_path, image_format, [], [])
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except Exception as e:
log.error('Error saving avatar: %s' % str(e))
if os.path.exists(file_path):
os.remove(file_path)
new_file_path = '.'.join(file_path.split('.')[:-1]) + '.png'
def on_ok(file_path, pixbuf):
pixbuf.savev(file_path, 'png', [], [])
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ConfirmationDialog(_('Extension not supported'),
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_('Image cannot be saved in %(type)s format. Save as '
'%(new_filename)s?') % {'type': image_format,
'new_filename': new_file_path},
on_response_ok = (on_ok, new_file_path, pixbuf))
def on_ok(file_path):
if os.path.exists(file_path):
# check if we have write permissions
if not os.access(file_path, os.W_OK):
file_name = os.path.basename(file_path)
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ErrorDialog(_('Cannot overwrite existing file "%s"') % \
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file_name, _('A file with this name already exists and you '
'do not have permission to overwrite it.'))
return
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dialog2 = FTOverwriteConfirmationDialog(
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_('This file already exists'), _('What do you want to do?'),
propose_resume=False, on_response=(on_continue, file_path))
dialog2.set_destroy_with_parent(True)
else:
dirname = os.path.dirname(file_path)
if not os.access(dirname, os.W_OK):
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ErrorDialog(_('Directory "%s" is not writable') % \
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dirname, _('You do not have permission to create files in '
'this directory.'))
return
on_continue(0, file_path)
transient = app.app.get_active_window()
AvatarSaveDialog(on_ok,
path=app.config.get('last_save_dir'),
file_name='%s.png' % default_name,
transient_for=transient)
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def create_combobox(value_list, selected_value = None):
"""
Value_list is [(label1, value1)]
"""
liststore = Gtk.ListStore(str, str)
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combobox = Gtk.ComboBox.new_with_model(liststore)
cell = Gtk.CellRendererText()
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combobox.pack_start(cell, True)
combobox.add_attribute(cell, 'text', 0)
i = -1
for value in value_list:
liststore.append(value)
if selected_value == value[1]:
i = value_list.index(value)
if i > -1:
combobox.set_active(i)
combobox.show_all()
return combobox
def create_list_multi(value_list, selected_values=None):
"""
Value_list is [(label1, value1)]
"""
liststore = Gtk.ListStore(str, str)
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treeview = Gtk.TreeView.new_with_model(liststore)
treeview.get_selection().set_mode(Gtk.SelectionMode.MULTIPLE)
treeview.set_headers_visible(False)
col = Gtk.TreeViewColumn()
treeview.append_column(col)
cell = Gtk.CellRendererText()
col.pack_start(cell, True)
col.set_attributes(cell, text=0)
for value in value_list:
iter = liststore.append(value)
if value[1] in selected_values:
treeview.get_selection().select_iter(iter)
treeview.show_all()
return treeview
def load_iconset(path, pixbuf2=None, transport=False):
"""
Load full iconset from the given path, and add pixbuf2 on top left of each
static images
"""
path += '/'
if transport:
list_ = ('online', 'chat', 'away', 'xa', 'dnd', 'offline',
'not in roster')
else:
list_ = ('connecting', 'online', 'chat', 'away', 'xa', 'dnd',
'invisible', 'offline', 'error', 'requested', 'event', 'opened',
'closed', 'not in roster', 'muc_active', 'muc_inactive')
if pixbuf2:
list_ = ('connecting', 'online', 'chat', 'away', 'xa', 'dnd',
'offline', 'error', 'requested', 'event', 'not in roster')
return _load_icon_list(list_, path, pixbuf2)
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def load_mood_icon(icon_name):
"""
Load an icon from the mood iconset in 16x16
"""
iconset = app.config.get('mood_iconset')
path = os.path.join(helpers.get_mood_iconset_path(iconset), '')
icon_list = _load_icon_list([icon_name], path)
return icon_list[icon_name]
def load_activity_icon(category, activity = None):
"""
Load an icon from the activity iconset in 16x16
"""
iconset = app.config.get('activity_iconset')
path = os.path.join(helpers.get_activity_iconset_path(iconset),
category, '')
if activity is None:
activity = 'category'
icon_list = _load_icon_list([activity], path)
return icon_list[activity]
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def get_pep_as_pixbuf(pep_class):
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if pep_class == PEPEventType.MOOD:
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received_mood = pep_class.data['mood']
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mood = received_mood if received_mood in MOODS else 'unknown'
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pixbuf = load_mood_icon(mood).get_pixbuf()
return pixbuf
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elif pep_class == PEPEventType.TUNE:
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icon = get_icon_pixmap('audio-x-generic', quiet=True)
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if not icon:
path = os.path.join(configpaths.get('DATA'), 'emoticons', 'static',
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'music.png')
return GdkPixbuf.Pixbuf.new_from_file(path)
return icon
elif pep_class == PEPEventType.ACTIVITY:
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pep_ = pep_class.data
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activity = pep_['activity']
has_known_activity = activity in ACTIVITIES
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has_known_subactivity = (has_known_activity and ('subactivity' in pep_)
and (pep_['subactivity'] in ACTIVITIES[activity]))
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if has_known_activity:
if has_known_subactivity:
subactivity = pep_['subactivity']
return load_activity_icon(activity, subactivity).get_pixbuf()
else:
return load_activity_icon(activity).get_pixbuf()
else:
return load_activity_icon('unknown').get_pixbuf()
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elif pep_class == PEPEventType.LOCATION:
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icon = get_icon_pixmap('applications-internet', quiet=True)
if not icon:
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icon = get_icon_pixmap('gajim-earth')
return icon
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return None
def get_iconset_name_for(name):
if name == 'not in roster':
name = 'notinroster'
iconset = app.config.get('iconset')
if not iconset:
iconset = app.config.DEFAULT_ICONSET
return '%s-%s' % (iconset, name)
def load_icons_meta():
"""
Load and return - AND + small icons to put on top left of an icon for meta
contacts
"""
iconset = app.config.get('iconset')
path = os.path.join(helpers.get_iconset_path(iconset), '16x16')
# try to find opened_meta.png file, else opened.png else nopixbuf merge
path_opened = os.path.join(path, 'opened_meta.png')
if not os.path.isfile(path_opened):
path_opened = os.path.join(path, 'opened.png')
if os.path.isfile(path_opened):
pixo = GdkPixbuf.Pixbuf.new_from_file(path_opened)
else:
pixo = None
# Same thing for closed
path_closed = os.path.join(path, 'opened_meta.png')
if not os.path.isfile(path_closed):
path_closed = os.path.join(path, 'closed.png')
if os.path.isfile(path_closed):
pixc = GdkPixbuf.Pixbuf.new_from_file(path_closed)
else:
pixc = None
return pixo, pixc
def _load_icon_list(icons_list, path, pixbuf2 = None):
"""
Load icons in icons_list from the given path, and add pixbuf2 on top left of
each static images
"""
imgs = {}
for icon in icons_list:
# try to open a pixfile with the correct method
icon_file = icon.replace(' ', '_')
files = []
files.append(path + icon_file + '.gif')
files.append(path + icon_file + '.png')
image = Gtk.Image()
image.show()
imgs[icon] = image
for file_ in files: # loop seeking for either gif or png
if os.path.exists(file_):
image.set_from_file(file_)
if pixbuf2 and image.get_storage_type() == Gtk.ImageType.PIXBUF:
# add pixbuf2 on top-left corner of image
pixbuf1 = image.get_pixbuf()
pixbuf2.composite(pixbuf1, 0, 0,
pixbuf2.get_property('width'),
pixbuf2.get_property('height'), 0, 0, 1.0, 1.0,
GdkPixbuf.InterpType.NEAREST, 255)
image.set_from_pixbuf(pixbuf1)
break
return imgs
def make_jabber_state_images():
"""
Initialize jabber_state_images dictionary
"""
iconset = app.config.get('iconset')
if iconset:
if helpers.get_iconset_path(iconset):
path = os.path.join(helpers.get_iconset_path(iconset), '16x16')
if not os.path.exists(path):
iconset = app.config.DEFAULT_ICONSET
app.config.set('iconset', iconset)
else:
iconset = app.config.DEFAULT_ICONSET
app.config.set('iconset', iconset)
else:
iconset = app.config.DEFAULT_ICONSET
app.config.set('iconset', iconset)
path = os.path.join(helpers.get_iconset_path(iconset), '16x16')
app.interface.jabber_state_images['16'] = load_iconset(path)
pixo, pixc = load_icons_meta()
app.interface.jabber_state_images['opened'] = load_iconset(path, pixo)
app.interface.jabber_state_images['closed'] = load_iconset(path, pixc)
path = os.path.join(helpers.get_iconset_path(iconset), '32x32')
app.interface.jabber_state_images['32'] = load_iconset(path)
path = os.path.join(helpers.get_iconset_path(iconset), '24x24')
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if os.path.exists(path):
app.interface.jabber_state_images['24'] = load_iconset(path)
else:
# Resize 32x32 icons to 24x24
for each in app.interface.jabber_state_images['32']:
img = Gtk.Image()
pix = app.interface.jabber_state_images['32'][each]
pix_type = pix.get_storage_type()
if pix_type == Gtk.ImageType.ANIMATION:
animation = pix.get_animation()
pixbuf = animation.get_static_image()
elif pix_type == Gtk.ImageType.EMPTY:
pix = app.interface.jabber_state_images['16'][each]
pix_16_type = pix.get_storage_type()
if pix_16_type == Gtk.ImageType.ANIMATION:
animation = pix.get_animation()
pixbuf = animation.get_static_image()
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else:
pixbuf = pix.get_pixbuf()
else:
pixbuf = pix.get_pixbuf()
scaled_pix = pixbuf.scale_simple(24, 24, GdkPixbuf.InterpType.BILINEAR)
img.set_from_pixbuf(scaled_pix)
app.interface.jabber_state_images['24'][each] = img
def reload_jabber_state_images():
make_jabber_state_images()
app.interface.roster.update_jabber_state_images()
def label_set_autowrap(widget):
"""
Make labels automatically re-wrap if their containers are resized.
Accepts label or container widgets
"""
if isinstance (widget, Gtk.Container):
children = widget.get_children()
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for i in list(range (len (children))):
label_set_autowrap(children[i])
elif isinstance(widget, Gtk.Label):
widget.set_line_wrap(True)
widget.connect_after('size-allocate', __label_size_allocate)
def __label_size_allocate(widget, allocation):
"""
Callback which re-allocates the size of a label
"""
layout = widget.get_layout()
lw_old, lh_old = layout.get_size()
# fixed width labels
if lw_old/Pango.SCALE == allocation.width:
return
# set wrap width to the Pango.Layout of the labels ###
widget.set_alignment(0.0, 0.0)
layout.set_width (allocation.width * Pango.SCALE)
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lh = layout.get_size()[1]
if lh_old != lh:
widget.set_size_request (-1, lh / Pango.SCALE)
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def get_action(action):
return app.app.lookup_action(action)
def add_css_class(widget, class_name, prefix=None):
if class_name and prefix:
class_name = prefix + class_name
style = widget.get_style_context()
if prefix is not None:
# Remove all css classes with prefix
for css_cls in style.list_classes():
if css_cls.startswith(prefix):
style.remove_class(css_cls)
if class_name is not None:
style.add_class(class_name)
def add_css_to_widget(widget, css):
provider = Gtk.CssProvider()
provider.load_from_data(bytes(css.encode()))
context = widget.get_style_context()
context.add_provider(provider,
Gtk.STYLE_PROVIDER_PRIORITY_USER)
def remove_css_class(widget, class_name):
style = widget.get_style_context()
style.remove_class(class_name)
def draw_affiliation(surface, affiliation):
icon_size = 16
size = 4 * 1
if affiliation not in ('owner', 'admin', 'member'):
return
ctx = cairo.Context(surface)
ctx.rectangle(icon_size-size, icon_size-size, size, size)
if affiliation == 'owner':
ctx.set_source_rgb(204/255, 0, 0)
elif affiliation == 'admin':
ctx.set_source_rgb(255/255, 140/255, 0)
elif affiliation == 'member':
ctx.set_source_rgb(0, 255/255, 0)
ctx.fill()
def get_image_from_icon_name(icon_name, scale):
icon = get_iconset_name_for(icon_name)
surface = gtk_icon_theme.load_surface(icon, 16, scale, None, 0)
return Gtk.Image.new_from_surface(surface)
def pango_to_css_weight(number):
# Pango allows for weight values between 100 and 1000
# CSS allows only full hundred numbers like 100, 200 ..
number = int(number)
if number < 100:
return 100
if number > 900:
return 900
return int(math.ceil(number / 100.0)) * 100
def get_monitor_scale_factor():
display = Gdk.Display.get_default()
monitor = display.get_primary_monitor()
if monitor is None:
log.warning('Could not determine scale factor')
return 1
return monitor.get_scale_factor()