From 83506314802184f07cc1709fef1d27ad5a7f8e78 Mon Sep 17 00:00:00 2001
From: Denis Fomin <fominde@gmail.com>
Date: Mon, 26 Sep 2011 22:38:52 +0300
Subject: [PATCH] add new url image preview plugin
---
url_image_preview/__init__.py | 1 +
url_image_preview/config_dialog.ui | 56 +++++++++
url_image_preview/manifest.ini | 9 ++
url_image_preview/url_image_preview.py | 162 +++++++++++++++++++++++++
4 files changed, 228 insertions(+)
create mode 100644 url_image_preview/__init__.py
create mode 100644 url_image_preview/config_dialog.ui
create mode 100644 url_image_preview/manifest.ini
create mode 100644 url_image_preview/url_image_preview.py
diff --git a/url_image_preview/__init__.py b/url_image_preview/__init__.py
new file mode 100644
index 00000000..e1e7c710
--- /dev/null
+++ b/url_image_preview/__init__.py
@@ -0,0 +1 @@
+from url_image_preview import UrlImagePreviewPlugin
diff --git a/url_image_preview/config_dialog.ui b/url_image_preview/config_dialog.ui
new file mode 100644
index 00000000..438dd933
--- /dev/null
+++ b/url_image_preview/config_dialog.ui
@@ -0,0 +1,56 @@
+<?xml version="1.0"?>
+<interface>
+ <requires lib="gtk+" version="2.16"/>
+ <!-- interface-naming-policy toplevel-contextual -->
+ <object class="GtkWindow" id="window1">
+ <child>
+ <object class="GtkVBox" id="vbox1">
+ <property name="visible">True</property>
+ <property name="orientation">vertical</property>
+ <child>
+ <object class="GtkHBox" id="hbox2">
+ <property name="visible">True</property>
+ <child>
+ <object class="GtkLabel" id="preview_size_lebel">
+ <property name="width_request">133</property>
+ <property name="visible">True</property>
+ <property name="xalign">0.029999999329447746</property>
+ <property name="label" translatable="yes">Preview size</property>
+ <property name="ellipsize">start</property>
+ <property name="single_line_mode">True</property>
+ <property name="track_visited_links">False</property>
+ </object>
+ <packing>
+ <property name="position">0</property>
+ </packing>
+ </child>
+ <child>
+ <object class="GtkSpinButton" id="preview_size">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="has_tooltip">True</property>
+ <property name="tooltip_text" translatable="yes">Preview size(10-512)</property>
+ <property name="invisible_char">●</property>
+ <property name="width_chars">6</property>
+ <property name="snap_to_ticks">True</property>
+ <property name="numeric">True</property>
+ <signal name="value_changed" handler="preview_size_value_changed"/>
+ </object>
+ <packing>
+ <property name="expand">False</property>
+ <property name="fill">False</property>
+ <property name="position">1</property>
+ </packing>
+ </child>
+ </object>
+ <packing>
+ <property name="position">0</property>
+ </packing>
+ </child>
+ <child>
+ <placeholder/>
+ </child>
+ </object>
+ </child>
+ </object>
+</interface>
diff --git a/url_image_preview/manifest.ini b/url_image_preview/manifest.ini
new file mode 100644
index 00000000..772e0166
--- /dev/null
+++ b/url_image_preview/manifest.ini
@@ -0,0 +1,9 @@
+[info]
+name: Url image preview
+short_name: url_image_preview
+version: 0.1
+description: Url image preview in chatbox.
+ Based on patch in ticket #5300:
+ http://trac.gajim.org/attachment/ticket/5300.
+authors = Denis Fomin <fominde@gmail.com>
+homepage = http://trac-plugins.gajim.org/wiki/
diff --git a/url_image_preview/url_image_preview.py b/url_image_preview/url_image_preview.py
new file mode 100644
index 00000000..cf315835
--- /dev/null
+++ b/url_image_preview/url_image_preview.py
@@ -0,0 +1,162 @@
+# -*- coding: utf-8 -*-
+
+import gtk
+import re
+import os
+
+import urllib
+import gobject
+
+from common import gajim
+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 = []
+ self.conn.close()
+
+ 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
+
+ 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)
+ gobject.idle_add(self.insert_pic_preview, mark, special_text, special_text)
+
+ def insert_pic_preview(self, mark, special_text, url):
+ pixbuf = self.get_pixbuf_from_url( url, self.plugin.config[
+ 'PREVIEW_SIZE'])
+ if pixbuf:
+ # insert image
+ buffer_ = mark.get_buffer()
+ end_iter = buffer_.get_iter_at_mark(mark)
+ anchor = buffer_.create_child_anchor(end_iter)
+ img = TextViewImage(anchor, special_text)
+ img.set_from_pixbuf(pixbuf)
+ img.show()
+ self.textview.tv.add_child_at_anchor(img, anchor)
+
+
+ def get_pixbuf_from_url(self, url, size):
+ # download image and resize
+ # Returns pixbuf or False if broken image or not connected
+ try:
+ data = urllib.urlopen(url).read()
+ pix = gtk.gdk.PixbufLoader()
+ pix.write(data)
+ pix.close()
+ pixbuf = pix.get_pixbuf()
+ pixbuf, w, h = self.get_pixbuf_of_size(pixbuf, size)
+ except:
+ return False
+ return pixbuf
+
+ 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()
--
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