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# Copyright (c) 2016 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
=begin
= Tree View/List Store
The GtkListStore is used to store data in list form, to be used
later on by a GtkTreeView to display it. This demo builds a
simple GtkListStore and displays it.
=end
class ListStoreDemo
Bug = Struct.new("Bug", :fixed, :number, :severity, :description)
COLUMN_FIXED, COLUMN_NUMBER, COLUMN_SEVERITY, COLUMN_DESCRIPTION,
COLUMN_PULSE, COLUMN_ICON, COLUMN_ACTIVE, COLUMN_SENSITIVE, NUM_COLUMNS =
*(0..8).to_a
DATA = [
[false, 60_482, "Normal", "scrollable notebooks and hidden tabs" ],
[false, 60_620, "Critical", "gdk_window_clear_area (gdkwindow-win32.c) is not thread-safe" ],
[false, 50_214, "Major", "Xft support does not clean up correctly" ],
[true, 52_877, "Major", "GtkFileSelection needs a refresh method. " ],
[false, 56_070, "Normal", "Can't click button after setting in sensitive" ],
[true, 56_355, "Normal", "GtkLabel - Not all changes propagate correctly" ],
[false, 50_055, "Normal", "Rework width/height computations for TreeView" ],
[false, 58_278, "Normal", "gtk_dialog_set_response_sensitive doesn't work" ],
[false, 55_767, "Normal", "Getters for all setters" ],
[false, 56_925, "Normal", "Gtkcalender size" ],
[false, 56_221, "Normal", "Selectable label needs right-click copy menu" ],
[true, 50_939, "Normal", "Add shift clicking to GtkTextView" ],
[false, 6_112, "Enhancement","netscape-like collapsable toolbars" ],
[false, 1, "Normal", "First bug :=)" ],
].collect do |ary|
Bug.new(*ary)
end
def initialize(main_window)
@window = Gtk::Window.new(:toplevel)
@window.screen = main_window.screen
@window.title = "List Store"
@window.border_width = 8
@timeout = 0
@window.signal_connect "delete-event" do
@model = nil
GLib::Source.remove(@timeout) unless @timeout.zero?
@timeout = 0
false
end
vbox = Gtk::Box.new(:vertical, 8)
@window.add(vbox)
label = Gtk::Label.new(<<-EOF)
This is the bug list (note: not based on real data, it would be nice to
have a nice ODBC interface to bugzilla or so, though).
EOF
vbox.pack_start(label, :expand => false, :fill => false, :padding => 0)
sw = Gtk::ScrolledWindow.new(nil, nil)
sw.shadow_type = :etched_in
sw.set_policy(:never, :automatic)
vbox.pack_start(sw, :expand => true, :fill => true, :padding => 0)
# create tree model
create_model
# create tree view
treeview = Gtk::TreeView.new(@model)
treeview.search_column = COLUMN_DESCRIPTION
sw.add(treeview)
# add columns to the tree view
add_columns(treeview)
# finish and show
@window.set_default_size(280, 250)
end
def run
if !@window.visible?
@window.show_all
add_spinner
else
@window.destroy
GLib::Source.remove(@tiemout) unless @timeout.zero?
@timeout = 0
end
@window
end
private
def create_model
# create list store
@model = Gtk::ListStore.new(TrueClass, Integer, String, String, Integer,
String, TrueClass, TrueClass)
# add data to the list store
DATA.each_with_index do |bug, i|
icon_name = ""
icon_name = "battery-caution-charging-symbolic" if i == 1 || i == 3
sensitive = i == 3 ? false : true
iter = @model.append
iter.set_values([bug.fixed, bug.number, bug.severity, bug.description,
0, icon_name, false, sensitive])
end
end
def add_columns(treeview)
# column for fixed toggles
renderer = Gtk::CellRendererToggle.new
renderer.signal_connect("toggled") { |_cell, path| fixed_toggled(path) }
column = Gtk::TreeViewColumn.new("Fixed?",
renderer,
"active" => COLUMN_FIXED)
# set this column to a fixed sizing (of 50 pixels)
column.sizing = :fixed
column.fixed_width = 50
treeview.append_column(column)
# column for bug numbers
renderer = Gtk::CellRendererText.new
column = Gtk::TreeViewColumn.new("Bug number",
renderer,
"text" => COLUMN_NUMBER)
column.sort_column_id = COLUMN_NUMBER
treeview.append_column(column)
# column for severities
renderer = Gtk::CellRendererText.new
column = Gtk::TreeViewColumn.new("Severity",
renderer,
"text" => COLUMN_SEVERITY)
column.sort_column_id = COLUMN_SEVERITY
treeview.append_column(column)
# column for description
renderer = Gtk::CellRendererText.new
column = Gtk::TreeViewColumn.new("Description",
renderer,
"text" => COLUMN_DESCRIPTION)
column.sort_column_id = COLUMN_DESCRIPTION
treeview.append_column(column)
# column for spinner
renderer = Gtk::CellRendererSpinner.new
column = Gtk::TreeViewColumn.new("Spinning",
renderer,
"pulse" => COLUMN_PULSE,
"active" => COLUMN_ACTIVE)
column.sort_column_id = COLUMN_PULSE
treeview.append_column(column)
# column for symbolic icon
renderer = Gtk::CellRendererPixbuf.new
column = Gtk::TreeViewColumn.new("Symbolic icon",
renderer,
"icon-name" => COLUMN_ICON,
"sensitive" => COLUMN_SENSITIVE)
column.sort_column_id = COLUMN_ICON
treeview.append_column(column)
end
def fixed_toggled(path_str)
path = Gtk::TreePath.new(path_str)
# get toggled iter
iter = @model.get_iter(path)
fixed = iter[COLUMN_FIXED]
# do something with the value
fixed ^= 1
# set new value
iter[COLUMN_FIXED] = fixed
end
def add_spinner
if @timeout.zero?
@timeout = GLib::Timeout.add(80) do
GLib::Source.remove(@timeout) unless @model
iter = @model.iter_first
pulse = iter[COLUMN_PULSE]
pulse = pulse == GLib::MAXUINT ? 0 : pulse + 1
iter[COLUMN_PULSE] = pulse
iter[COLUMN_ACTIVE] = true
true
end
end
end
end
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