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# -*- coding: utf-8 -*-
import gtk
import re
import os
from common import gajim
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from plugins import GajimPlugin
from plugins.helpers import log_calls
from plugins.gui import GajimPluginConfigDialog
from conversation_textview import TextViewImage
EXTENSIONS = ('.png','.jpg','.jpeg','.gif','.raw','.svg')
class UrlImagePreviewPlugin(GajimPlugin):
@log_calls('UrlImagePreviewPlugin')
def init(self):
self.description = _('Url image preview in chatbox.\n'
'Based on patch in ticket #5300:\n'
'http://trac.gajim.org/attachment/ticket/5300.')
self.config_dialog = UrlImagePreviewPluginConfigDialog(self)
self.gui_extension_points = {
'chat_control_base': (self.connect_with_chat_control,
self.disconnect_from_chat_control),
'print_special_text': (self.print_special_text,
self.print_special_text1),}
self.config_default_values = {
'PREVIEW_SIZE': (150, 'Preview size(10-512)'),}
self.chat_control = None
self.controls = []
@log_calls('UrlImagePreviewPlugin')
def connect_with_chat_control(self, chat_control):
self.chat_control = chat_control
control = Base(self, self.chat_control)
self.controls.append(control)
@log_calls('UrlImagePreviewPlugin')
def disconnect_from_chat_control(self, chat_control):
for control in self.controls:
control.disconnect_from_chat_control()
self.controls = []
def print_special_text(self, tv, special_text, other_tags, graphics=True):
for control in self.controls:
if control.chat_control.conv_textview != tv:
continue
control.print_special_text(special_text, other_tags, graphics=True)
def print_special_text1(self, chat_control, special_text, other_tags=None,
graphics=True):
for control in self.controls:
if control.chat_control == chat_control:
control.disconnect_from_chat_control()
self.controls.remove(control)
class Base(object):
def __init__(self, plugin, chat_control):
self.plugin = plugin
self.chat_control = chat_control
self.textview = self.chat_control.conv_textview
def print_special_text(self, special_text, other_tags, graphics=True):
if not gajim.interface.basic_pattern_re.match(special_text):
return
# remove qip bbcode
special_text = special_text.rsplit('[/img]')[0]
name, extension = os.path.splitext(special_text)
if extension.lower() not in EXTENSIONS:
return
if not special_text.startswith('http://') and \
special_text.startswith('www.'):
special_text = 'http://' + special_text
if not special_text.startswith('ftp://') and \
special_text.startswith('ftp.'):
special_text = 'ftp://' + special_text
# show pics preview
buffer_ = self.textview.tv.get_buffer()
iter_ = buffer_.get_end_iter()
mark = buffer_.create_mark(None, iter_, True)
# start downloading image
gajim.thread_interface(helpers.download_image, [
self.textview.account, {'src': special_text}],self._update_img, [mark])
def _update_img(self, (mem, alt), mark):
if mem:
try:
loader = gtk.gdk.PixbufLoader()
loader.write(mem)
loader.close()
pixbuf = loader.get_pixbuf()
pixbuf, w, h = self.get_pixbuf_of_size(pixbuf,
self.plugin.config['PREVIEW_SIZE'])
buffer_ = mark.get_buffer()
end_iter = buffer_.get_iter_at_mark(mark)
anchor = buffer_.create_child_anchor(end_iter)
img = TextViewImage(anchor, alt)
img.set_from_pixbuf(pixbuf)
img.show()
self.textview.tv.add_child_at_anchor(img, anchor)
except Exception:
pass
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def get_pixbuf_of_size(self, pixbuf, size):
# Creates a pixbuf that fits in the specified square of sizexsize
# while preserving the aspect ratio
# Returns tuple: (scaled_pixbuf, actual_width, actual_height)
image_width = pixbuf.get_width()
image_height = pixbuf.get_height()
if image_width > image_height:
if image_width > size:
image_height = int(size / float(image_width) * image_height)
image_width = int(size)
else:
if image_height > size:
image_width = int(size / float(image_height) * image_width)
image_height = int(size)
crop_pixbuf = pixbuf.scale_simple(image_width, image_height,
gtk.gdk.INTERP_BILINEAR)
return (crop_pixbuf, image_width, image_height)
def disconnect_from_chat_control(self):
pass
class UrlImagePreviewPluginConfigDialog(GajimPluginConfigDialog):
def init(self):
self.GTK_BUILDER_FILE_PATH = self.plugin.local_file_path(
'config_dialog.ui')
self.xml = gtk.Builder()
self.xml.set_translation_domain('gajim_plugins')
self.xml.add_objects_from_file(self.GTK_BUILDER_FILE_PATH, ['vbox1'])
self.preview_size_spinbutton = self.xml.get_object('preview_size')
self.preview_size_spinbutton.get_adjustment().set_all(20, 10, 512, 1,
10, 0)
vbox = self.xml.get_object('vbox1')
self.child.pack_start(vbox)
self.xml.connect_signals(self)
def on_run(self):
self.preview_size_spinbutton.set_value(self.plugin.config[
'PREVIEW_SIZE'])
def preview_size_value_changed(self, spinbutton):
self.plugin.config['PREVIEW_SIZE'] = spinbutton.get_value()