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Diffstat (limited to 'infoslicer/widgets/Gallery_View.py')
| -rw-r--r-- | infoslicer/widgets/Gallery_View.py | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/infoslicer/widgets/Gallery_View.py b/infoslicer/widgets/Gallery_View.py new file mode 100644 index 0000000..4464088 --- /dev/null +++ b/infoslicer/widgets/Gallery_View.py @@ -0,0 +1,177 @@ +# Copyright (C) IBM Corporation 2008
+import pygtk
+pygtk.require('2.0')
+import gtk
+import os
+import cPickle
+import logging
+
+from Editable_Textbox import Editable_Textbox
+from infoslicer.processing.Article_Data import *
+from infoslicer.processing.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 = _validate_image_list(book.wiki.root, 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],
+ self.image_list[self.current_index][2])
+ 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)
+
+def _validate_image_list(root, image_list):
+ """
+ provides a mechanism for validating image lists and expanding relative paths
+ @param image_list: list of images to validate
+ @return: list of images with corrected paths, and broken images removed
+ """
+ for i in xrange(len(image_list)):
+ if not os.access(image_list[i][0], os.F_OK):
+ if os.access(os.path.join(root, image_list[i][0]), os.F_OK):
+ image_list[i] = (os.path.join(root, image_list[i][0]),
+ image_list[i][1], image_list[i][2])
+ else:
+ image = None
+ #removing during for loop was unreliable
+ while None in image_list:
+ image_list.remove(None)
+ return image_list
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