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# Copyright (c) 2016 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
=begin
= Icon View/Icon View Basics
The GtkIconView widget is used to display and manipulate icons.
It uses a GtkTreeModel for data storage, so the list store
example might be helpful.
=end
class IconviewDemo
COL_PATH, COL_DISPLAY_NAME, COL_PIXBUF, COL_IS_DIRECTORY = (0..3).to_a
FOLDER_NAME = "/iconview/gnome-fs-directory.png".freeze
FILE_NAME = "/iconview/gnome-fs-regular.png".freeze
def initialize(main_window)
@window = Gtk::Window.new(:toplevel)
@window.screen = main_window.screen
@window.title = "Icon View Basics"
@window.set_default_size(650, 400)
load_pixbufs
vbox = Gtk::Box.new(:vertical, 0)
@window.add(vbox)
tool_bar = Gtk::Toolbar.new
vbox.pack_start(tool_bar, :expand => false, :fill => false, :padding => 0)
up_button = Gtk::ToolButton.new
up_button.label = "_Up"
up_button.use_underline = true
up_button.icon_name = "go-up"
up_button.is_important = true
up_button.sensitive = false
tool_bar.insert(up_button, -1)
home_button = Gtk::ToolButton.new
home_button.label = "_Home"
home_button.use_underline = true
home_button.icon_name = "go-home"
home_button.is_important = true
tool_bar.insert(home_button, -1)
sw = Gtk::ScrolledWindow.new
sw.shadow_type = :etched_in
sw.set_policy(:automatic, :automatic)
vbox.pack_start(sw, :expand => true, :fill => true, :padding => 0)
# Create the store and fill it with the contents of '/'
@parent = "/"
create_store
fill_store
icon_view = Gtk::IconView.new(:model => @store)
icon_view.selection_mode = :multiple
# Connect to the "clicked" signal of the "Up" tool button
up_button.signal_connect "clicked" do
@parent = File.dirname(@parent)
fill_store
# Maybe de-sensitive the up button
up_button.sensitive = @parent == "/"
end
# Connect to the "clicked" signal of the "Home" too button
home_button.signal_connect "clicked" do
@parent = ENV["HOME"]
fill_store
up_button.sensitive = true
end
# We now set which model columns that correspond to the text
# and pixbbuf of each of item
icon_view.text_column = COL_DISPLAY_NAME
icon_view.pixbuf_column = COL_PIXBUF
# Connec the "item-activated" signal
icon_view.signal_connect "item-activated" do |_widget, tree_path|
iter = @store.get_iter(tree_path)
path = iter[COL_PATH]
directory = iter[COL_IS_DIRECTORY]
if directory
@parent = path
fill_store
up_button.sensitive = true
end
end
sw.add(icon_view)
icon_view.grab_focus
end
def run
if !@window.visible?
@window.show_all
else
@window.destroy
end
@window
end
private
def load_pixbufs
# Loads the images for the demo and returns whether the operation succeeded
return if @file_pixbuf
@file_pixbuf = GdkPixbuf::Pixbuf.new(:resource => FILE_NAME)
return false unless @file_pixbuf
@folder_pixbuf = GdkPixbuf::Pixbuf.new(:resource => FOLDER_NAME)
return false unless @folder_pixbuf
end
def create_store
@store = Gtk::ListStore.new(String, String, GdkPixbuf::Pixbuf, TrueClass)
# Set sort column and function
@store.set_default_sort_func do |_model, a, b|
sort_function(a, b)
end
@store.set_sort_column_id(Gtk::TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
:ascending)
end
def fill_store
@store.clear
Dir.glob(File.join(@parent, "*")).each do |path|
is_dir = FileTest.directory?(path)
iter = @store.append
iter[COL_DISPLAY_NAME] = File.basename(path) || "-"
iter[COL_PATH] = path
iter[COL_PIXBUF] = is_dir ? @folder_pixbuf : @file_pixbuf
iter[COL_IS_DIRECTORY] = is_dir
end
end
def sort_function(a, b)
if !a[COL_IS_DIRECTORY] and b[COL_IS_DIRECTORY]
1
elsif a[COL_IS_DIRECTORY] and !b[COL_IS_DIRECTORY]
-1
elsif !a[COL_DISPLAY_NAME] and b[COL_DISPLAY_NAME]
1
elsif a[COL_DISPLAY_NAME] and !b[COL_DISPLAY_NAME]
-1
else
a[COL_DISPLAY_NAME] <=> b[COL_DISPLAY_NAME]
end
end
end
|
