[Hiki] update - tut-treeview-renderer-example (ruby-gnome2-doc-cvs) - Ruby-GNOME2

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REMOTE_ADDR = 200.216.151.125
REMOTE_HOST = 
        URL = http://ruby-gnome2.sourceforge.jp/en/?tut-treeview-renderer-example
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+ {{link "tut-treeview-renderer-types", "tut-treeview-renderer", "tut-treeview", "tut-treeview-renderer-bold"}}
  = A Working Example

  Here is our example from the very beginning again (with an additional column though), only that the contents of the model are rendered properly on the screen this time. Both attributes and a cell data function are used for demonstration purposes.

    require 'gtk2'

    treestore = Gtk::TreeStore.new(String, String, Integer)

    # Append a toplevel row and fill in some data
    parent = treestore.append(nil)
    parent[0] = "Maria"
    parent[1] = "Incognito"

    # Append a second toplevel row and fill in some data
    parent = treestore.append(nil)
    parent[0] = "Jane"
    parent[1] = "Average"
    parent[2] = 1962

    # Append a child to the second toplevel row and fill in some data
    child = treestore.append(parent)
    child[0] = "Janinita"
    child[1] = "Average"
    child[2] = 1985

    view = Gtk::TreeView.new(treestore)
    view.selection.mode = Gtk::SELECTION_NONE

    # Create a renderer
    renderer = Gtk::CellRendererText.new

    # Add column using our renderer
    col = Gtk::TreeViewColumn.new("First Name", renderer, :text => 0)
    view.append_column(col)

    # Create another renderer and set the weight property
    renderer = Gtk::CellRendererText.new
    renderer.weight = Pango::FontDescription::WEIGHT_BOLD

    # Add column using the second renderer
    col = Gtk::TreeViewColumn.new("Last Name", renderer, :text => 1)
    view.append_column(col)

    # Create one last renderer and set the foreground color to red
    renderer = Gtk::CellRendererText.new
    renderer.foreground = "red"

    # Add column using the third renderer
    col = Gtk::TreeViewColumn.new("Age", renderer)
    view.append_column(col)

    # Create a cell data function to calculate age
    col.set_cell_data_func(renderer) do |col, renderer, model, iter|
      year_now = 2003 # To save code not relevent to the example
      year_born = iter[2]

      if (year_born <= year_now) && (year_born > 0)
        renderer.text = sprintf("%i years old", year_now - year_born)
        # render in default foreground color if we know the age
        renderer.foreground_set = false
      else
        renderer.text = "age unknown"
        # render with foreground color we set earlier if we don't know the age
        renderer.foreground_set = true
      end
    end

    Gtk.init

    window = Gtk::Window.new(Gtk::Window::TOPLEVEL)
    window.signal_connect("delete_event") { Gtk.main_quit; exit! }
    window.add(view)
    window.show_all

    Gtk.main

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[ruby-gnome2-doc-cvs] [Hiki] update - tut-treeview-renderer-example