ruby-****@sourc*****
ruby-****@sourc*****
2009年 10月 5日 (月) 21:54:41 JST
-------------------------
REMOTE_ADDR = 80.99.10.211
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/hiki.cgi?tut-gtk2-treev-pxbr
-------------------------
@@ -9,7 +9,7 @@
{{image_left("treev-crs-01.png")}}
-As you can see there are no pixbuf objects on this image on the left. This is because of a problem in GTK+. Namely, currently (as of Ruby 1.8.6 and Ruby-GNOME2 rel.: 2-0.17.0-rc1) {{image_right("dialog-warning.png")}}two important methods: Gtk::CellRendererPixbuf#set_attributes and Gtk::CellRendererPixbuf#set_attributes, do not work as expected. It looks that this is a combined C GTK+ as well as Ruby GTK+ problem. I have compiled the C example from Andrew Klause's book, and it exhibits exactly the same problems as my Ruby translation. You may check it out by clicking on ((<pixbuf-rdr.c|tut-gtk2-treev-treev-pxbr-cgtk-01>))
+Please update screenshot, since we have nice icons now.
{{br}}
@@ -18,59 +18,58 @@
#!/usr/bin/env ruby
require 'gtk2'
-
+
# Add three columns to the GtkTreeView. All three of the
# columns will be displayed as text, although one is a boolean
# value and another is an integer.
def setup_tree_view(treeview)
-
- renderer = Gtk::CellRendererToggle.new
- column = Gtk::TreeViewColumn.new("Buy", renderer, "active" => $buy_index)
-
- renderer.activatable = true
- renderer.signal_connect('toggled') do |w, path|
- iter = treeview.model.get_iter(path)
- iter[$buy_index] = !iter[$buy_index] if (iter)
- end
- treeview.append_column(column)
-
- renderer = Gtk::CellRendererText.new
- column = Gtk::TreeViewColumn.new("Count", renderer, "text" => $qty_index)
- treeview.append_column(column)
-
- column = Gtk::TreeViewColumn.new
- column.title = "Product"
-
- # Create a a tree view column with two renderers, one a pixbuf
- # and one text.
- renderer = Gtk::CellRendererPixbuf.new
- column.pack_start(renderer, false)
-
- # column.set_attributes(renderer, "pixbuf" => Gtk::Stock::DIALOG_QUESTION)
- # column.add_attribute(renderer, "pixbuf", Gtk::Stock::DIALOG_QUESTION)
-
- renderer = Gtk::CellRendererText.new
- column.pack_start(renderer, true)
- column.add_attribute(renderer, "text", $prod_index)
- treeview.append_column(column)
+
+ renderer = Gtk::CellRendererToggle.new
+ column = Gtk::TreeViewColumn.new("Buy", renderer, "active" => $buy_index)
+
+ renderer.activatable = true
+ renderer.signal_connect('toggled') do |w, path|
+ iter = treeview.model.get_iter(path)
+ iter[$buy_index] = !iter[$buy_index] if (iter)
+ end
+ treeview.append_column(column)
+
+ renderer = Gtk::CellRendererText.new
+ column = Gtk::TreeViewColumn.new("Count", renderer, "text" => $qty_index)
+ treeview.append_column(column)
+
+ column = Gtk::TreeViewColumn.new
+ column.title = "Product"
+
+ # Create a a tree view column with two renderers, one a pixbuf
+ # and one text.
+ renderer = Gtk::CellRendererPixbuf.new
+ column.pack_start(renderer, false)
+ column.add_attribute(renderer, 'stock_id', $pixbuf)
+
+ renderer = Gtk::CellRendererText.new
+ column.pack_start(renderer, true)
+ column.add_attribute(renderer, "text", $prod_index)
+ treeview.append_column(column)
end
-
+
window = Gtk::Window.new(Gtk::Window::TOPLEVEL)
window.resizable = true
window.title = "Grocery List"
window.border_width = 10
window.signal_connect('delete_event') { Gtk.main_quit }
window.set_size_request(275, 200)
-
+
+
class GroceryItem
- attr_accessor :product_type, :buy, :quantity, :product
- def initialize(t,b,q,p)
- @product_type, @buy, @quantity, @product = t, b, q, p
- end
+ attr_accessor :product_type, :buy, :quantity, :product
+ def initialize(t,b,q,p)
+ @product_type, @buy, @quantity, @product = t, b, q, p
+ end
end
- $buy_index = 0; $qty_index = 1; $prod_index = 2
+ $buy_index = 0; $qty_index = 1; $prod_index = 2; $pixbuf = 3
$p_category = 0; $p_child = 1
-
+
list = Array.new
list[0] = GroceryItem.new($p_category, true, 0, "Cleaning Supplies")
list[1] = GroceryItem.new($p_child, true, 1, "Paper Towels")
@@ -81,86 +80,60 @@
list[6] = GroceryItem.new($p_child, true, 1, "Milk")
list[7] = GroceryItem.new($p_child, false, 3, "Chips")
list[8] = GroceryItem.new($p_child, true, 4, "Soda")
-
+
treeview = Gtk::TreeView.new
setup_tree_view(treeview)
-
+
# Create a new tree model with three columns, as Boolean,
# integer and string.
- store = Gtk::TreeStore.new(TrueClass, Integer, String)
-
+ store = Gtk::TreeStore.new(TrueClass, Integer, String, String)
+
# Avoid creation of iterators on every iterration, since they
# need to provide state information for all iterations. Hence:
# establish closure variables for iterators parent and child.
parent = child = nil
-
+
# Add all of the products to the GtkListStore.
list.each_with_index do |e, i|
-
- # If the product type is a category, count the quantity
- # of all of the products in the category that are going
- # to be bought.
- if (e.product_type == $p_category)
- j = i + 1
-
- # Calculate how many products will be bought in
- # the category.
- while j < list.size && list[j].product_type != $p_category
- list[i].quantity += list[j].quantity if list[j].buy
- j += 1
- end
-
- # Add the category as a new root (parent) row (element).
- parent = store.append(nil)
- # store.set_value(parent, $buy_index, list[i].buy) # <= same as below
- parent[$buy_index] = list[i].buy
- parent[$qty_index] = list[i].quantity
- parent[$prod_index] = list[i].product
-
- # Otherwise, add the product as a child row of the category.
- else
- child = store.append(parent)
- # store.set_value(child, $buy_index, list[i].buy) # <= same as below
- child[$buy_index] = list[i].buy
- child[$qty_index] = list[i].quantity
- child[$prod_index] = list[i].product
- end
+
+ # If the product type is a category, count the quantity
+ # of all of the products in the category that are going
+ # to be bought.
+ if (e.product_type == $p_category)
+ j = i + 1
+
+ # Calculate how many products will be bought in
+ # the category.
+ while j < list.size && list[j].product_type != $p_category
+ list[i].quantity += list[j].quantity if list[j].buy
+ j += 1
+ end
+
+ # Add the category as a new root (parent) row (element).
+ parent = store.append(nil)
+ # store.set_value(parent, $buy_index, list[i].buy) # <= same as below
+ parent[$buy_index] = list[i].buy
+ parent[$qty_index] = list[i].quantity
+ parent[$prod_index] = list[i].product
+ parent[$pixbuf] = Gtk::Stock::DIALOG_INFO
+
+ # Otherwise, add the product as a child row of the category.
+ else
+ child = store.append(parent)
+ # store.set_value(child, $buy_index, list[i].buy) # <= same as below
+ child[$buy_index] = list[i].buy
+ child[$qty_index] = list[i].quantity
+ child[$prod_index] = list[i].product
+ child[$pixbuf] = Gtk::Stock::ABOUT
+ end
end
-
+
# Add the tree model to the tree view
treeview.model = store
treeview.expand_all
-
+
scrolled_win = Gtk::ScrolledWindow.new
scrolled_win.add(treeview)
scrolled_win.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
window.add(scrolled_win)
window.show_all
Gtk.main
-
-For your convenience I have included the API documentation for the two offending methods:
-
- #--- Gtk::TreeViewColumn#add_attribute(cell_renderer, attribute, column)
- #
- # Adds an attribute mapping to the list in the Gtk::TreeViewColumn.
- # The column is the column of the model to get a value from, and
- # the attribute is the parameter on cell_renderer to be set from
- # the value. So for example if column 2 of the model contains
- # strings, you could have the :text attribute of a
- # Gtk::CellRendererText get its values from column 2.
- #
- # * cell_renderer: the Gtk::CellRenderer to set attributes on
- # * attribute: An attribute on the renderer(Symbol or String)
- # * column: The column position on the model to get the attribute from.
- # * Returns: self
- #
- #--- Gtk::TreeViewColumn#set_attributes(cell_renderer, attributes)
- #
- # Sets the attributes in the list as the attributes of the
- # Gtk::TreeViewColumn. All existing attributes are removed, and
- # replaced with the new attributes.
- # You should set cell_renderer to the Gtk::TreeViewColumn before
- # call this method.
- #
- # * cell_renderer: The Gtk::CellRenderer we're setting the attributes of
- # * attributes: a hash of attributes. See Gtk::TreeViewColumn.new