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# Copyright (C) IBM Corporation 2008
import pygtk
pygtk.require('2.0')
import gtk
import cPickle
import logging
from GUI_Components.Compound_Widgets.Base_Widgets.Editable_Textbox import Editable_Textbox
from Processing.Article.Article_Data import *
from Processing.Article.Article import Article
import book
logger = logging.getLogger('infoslicer')
class Gallery_View( gtk.HBox ):
"""
Created by Christopher Leonard
Drag-and-drop methods added by Jonathan Mace
The gallery view acts in the same was as the Reading_View
except instead of displaying the text of an article, it
displays the images associated with that article, in a scrollable display.
Drag-and-drop methods have been added to set up the images as a drag
source.
The data returned by drag-data-get will be a list containing
an Image_Data object and a Sentence_Data object.
These correspond to the image
and caption respectively.
"""
def __init__(self):
self.image_list = []
gtk.HBox.__init__(self)
self.current_index = -1
left_button = gtk.Button(label="\n\n << \n\n")
right_button = gtk.Button(label="\n\n >> \n\n")
self.imagenumberlabel = gtk.Label()
self.image = gtk.Image()
self.imagebox = gtk.EventBox()
self.imagebox.add(self.image)
self.imagebox.drag_source_set(gtk.gdk.BUTTON1_MASK, [("text/plain", gtk.TARGET_SAME_APP, 80)], gtk.gdk.ACTION_COPY)
self.imagebox.connect("drag-begin", self.drag_begin_event, None)
self.imagebox.connect("drag-data-get", self.drag_data_get_event, None)
self.caption = gtk.Label("")
self.caption.set_line_wrap(True)
self.image_drag_container = gtk.VBox()
self.image_drag_container.pack_start(self.imagenumberlabel, expand = False)
self.image_drag_container.pack_start(self.imagebox, expand=False)
self.image_drag_container.pack_start(self.caption, expand=False)
image_container = gtk.VBox()
image_container.pack_start(gtk.Label(" "))
image_container.pack_start(self.image_drag_container, expand=False)
image_container.pack_start(gtk.Label(" "))
left_button_container = gtk.VBox()
left_button_container.pack_start(gtk.Label(" "))
left_button_container.pack_start(left_button, expand=False)
left_button_container.pack_start(gtk.Label(" "))
right_button_container = gtk.VBox()
right_button_container.pack_start(gtk.Label(" "))
right_button_container.pack_start(right_button, expand=False)
right_button_container.pack_start(gtk.Label(" "))
self.pack_start(left_button_container, expand=False)
self.pack_start(image_container)
self.pack_start(right_button_container, expand=False)
self._source_article = None
self.show_all()
right_button.connect("clicked", self.get_next_item, None)
left_button.connect("clicked", self.get_prev_item, None)
self.get_next_item(right_button, None)
self.source_article_id = 0
def get_next_item(self, button, param):
if self.image_list == []:
if self._source_article and self._source_article.article_title:
self.caption.set_text("This article does not have any images")
else:
self.caption.set_text("Please select a Wikipedia article from the menu above")
self.image.clear()
return
self.current_index += 1
if self.current_index == len(self.image_list):
self.current_index = 0
self.imagebuf = gtk.gdk.pixbuf_new_from_file(self.image_list[self.current_index][0])
self.image.set_from_pixbuf(self.imagebuf)
self.caption.set_text("\n" + self.image_list[self.current_index][1])
self.imagenumberlabel.set_text("(%d / %d)\n" % (self.current_index+1, len(self.image_list)))
def get_prev_item(self, button, param):
if self.image_list == []:
if self._source_article and self._source_article.article_title:
self.caption.set_text("This article does not have any images")
else:
self.caption.set_text("Please select a Wikipedia article from the menu above")
self.image.clear()
return
if self.current_index == 0:
self.current_index = len(self.image_list)
self.current_index -= 1
self.imagebuf = gtk.gdk.pixbuf_new_from_file(self.image_list[self.current_index][0])
self.image.set_from_pixbuf(self.imagebuf)
self.caption.set_text("\n" + self.image_list[self.current_index][1])
self.imagenumberlabel.set_text("(%d / %d)\n" % (self.current_index+1, len(self.image_list)))
def get_first_item(self):
if self.image_list == []:
if self._source_article and self._source_article.article_title:
self.caption.set_text("This article does not have any images")
else:
self.caption.set_text("Please select a Wikipedia article from the menu above")
self.image.clear()
return
self.current_index = 0
self.imagebuf = gtk.gdk.pixbuf_new_from_file(self.image_list[self.current_index][0])
self.image.set_from_pixbuf(self.imagebuf)
self.caption.set_text("\n" + self.image_list[self.current_index][1])
logger.debug("setting text to:")
logger.debug("(%d / %d)\n" %
(self.current_index+1, len(self.image_list)))
self.imagenumberlabel.set_text("(%d / %d)\n" % (self.current_index+1, len(self.image_list)))
def set_image_list(self, image_list):
logger.debug("validagting image list")
self.image_list = book.wiki.validate_image_list(image_list)
logger.debug(self.image_list)
def drag_begin_event(self, widget, context, data):
self.imagebox.drag_source_set_icon_pixbuf(self.imagebuf)
def drag_data_get_event(self, widget, context, selection_data, info, timestamp, data):
logger.debug("getting data")
atom = gtk.gdk.atom_intern("section")
imagedata = Picture_Data(self.source_article_id, self.image_list[self.current_index][0])
captiondata = Sentence_Data(0, self.source_article_id, 0, 0, 0, self.image_list[self.current_index][1])
paragraph1data = Paragraph_Data(0, self.source_article_id, 0, 0, [imagedata])
paragraph2data = Paragraph_Data(0, self.source_article_id, 0, 0, [captiondata])
sectionsdata = [Section_Data(0, self.source_article_id, 0, [paragraph1data, paragraph2data])]
string = cPickle.dumps(sectionsdata)
selection_data.set(atom, 8, string)
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